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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 15057. Отображено 198.
24-09-2015 дата публикации

Vorrichtungen und Verfahren zur Kanal-Bewertung

Номер: DE112008000042B4
Принадлежит: MEDIATEK INC, MEDIATEK INC.

Eine Vorrichtung zur Kanalbeurteilung, umfassend: eine Funk-Frequenz(RF)-Einheit; eine Basisband-Einheit, die mit der RF-Einheit verbunden ist und die die RF-Einheit anweist, selektiv in einen von einer Vielzahl von vorhandenen Kanälen eines Frequenzbandes zu springen, und die eine Pseudozufalls-Sequenz verwendet, um eine Vielzahl von Paketen über den angesprungenen Kanal zu empfangen; und eine Mikroprozessor-Kontrolleinheit (MCU), die mit der Basisband-Einheit verbunden ist, die den Messwert um einen ersten, vordefinierten Wert erhöht, wenn ein Paket verloren geht, sowie den Messwert um einen zweiten Wert erhöht, der geringer als der erste, vordefinierte Wert ist, wenn ein empfangener Paket-Header den Fehlercheck nicht erfolgreich durchläuft, und der Messwert wird durch ein Bit-Errorzähler erhöht, der die Quantität von Bits darstellt, die korrigiert wurden, wenn ein empfangener Paket-Header den Fehler-Check passiert hat, und Markieren des angesprungenen Kanals als guten Kanal, wenn ein ...

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12-05-2010 дата публикации

Telekommunikationssystem

Номер: DE102006044827B4
Принадлежит: MEDIATEK INC, MEDIATEK INC.

Ein Telekommunikationssystem, umfassend: ein Audiozubehör, wobei das Audiozubehör ein Headset ist, umfassend: ein Zubehör-Interface; und einen Zubehör-Controller, der die Operationen des Audiozubehörs gemäß dem Verbindungsstatus des Zubehör Interfaces kontrolliert; ein kabelloses Kommunikationszubehörmittel und eine Telekommunikationsvorrichtung, umfassend: ein Vorrichtungs-Interface, um physikalisch mit dem Zubehör Interface des Audiozubehörs in Verbindung zu treten; und einen Vorrichtungs-Controller, der den Betrieb der Telekommunikationsvorrichtung gemäß dem Verbindungsstatus des Vorrichtungs-Interfaces kontrolliert, und ein kabelloses Kommunikationsvorrichtungsmittel, das eine kabellose Kommunikationsverbindung mit dem kabellosen Kommunikationszubehörmittel aufbaut; wobei wenn vom Zubehör-Interface erkannt wird, dass das Zubehör-Interface vom Vorrichtungs-Interface gelöst wurde, so schaltet der Zubehör-Controller das Audiozubehör an, und aktiviert das kabellose Kommunikationszubehörmittel ...

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28-07-2011 дата публикации

Tragbares elektronisches Gerät

Номер: DE102009023938B4
Принадлежит: MEDIATEK INC, MEDIATEK INC.

Tragbares elektronisches Gerät (100) umfassend: ein Gehäuse (110); eine erste Schaltungs-Platine (120), die in dem Gehäuse angeordnet ist, wobei die erste Schaltungs-Platine ein erstes Masseanschluss-Element (123), einen ersten Rand (121) und einen zweiten Rand (122) umfasst, und wobei der erste Rand sich gegenüber dem zweiten Rand befindet; eine Antenne (124), die auf der ersten Schaltungs-Platine nahe dem ersten Rand angeordnet ist, wobei die Antenne ein Funksignal abstrahlt, wobei das Funksignal eine Wellenlänge aufweist, und wobei ein Resonanzstrom auf dem ersten Masseanschluss-Element entsprechend dem Funksignal erzeugt wird; eine zweite Schaltungs-Platine (130), die in dem Gehäuse angeordnet ist, wobei die zweite Schaltungs-Platine ein zweites Masseanschluss-Element (133), einen dritten Rand (131) und einen vierten Rand (132) umfasst; und ein Metallblech (140), das in dem Gehäuse isoliert von dem ersten Masseanschluss-Element angeordnet ist, wobei das Metallblech sich näher zu dem ...

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07-02-2008 дата публикации

VERFAHREN UND VORRICHTUNG ZUR SKALIERBAREN FORMKODIERUNG

Номер: DE0069937833D1
Автор: LI SHIPENG, LI, SHIPENG
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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17-10-2017 дата публикации

METHOD AND APPARATUS OF TEMPORAL MOTION VECTOR PREDICTION

Номер: CA0002794379C
Принадлежит: HFI INNOVATION INC., MEDIATEK INC, MEDIATEK INC.

An apparatus and method for motion vector prediction for a current block in a picture are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the information to be transmitted. Motion Vector Prediction (MVP) has been used to further conserve the bitrate associated with motion vector. In conventional temporal MVP, the predictor is often based on a single candidate such as the co-located motion vector in the previous frame/picture. If the co-located motion vector in the previous frame/picture does not exist, the predictor for the current block is not available. A techniquefor improved MVP is disclosed where the MVP utilized multiple candidates based on co-located motion vectors from future and/or past reference pictures. The candidates are arranged according to priority order to provide better availability of MVP and also to provide more accurate prediction. Furthermore, the MVP technique disclosed can be operated ...

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11-10-2019 дата публикации

A continuous-time delta-sigma modulator

Номер: TWI674769B
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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21-03-2021 дата публикации

Notch circuit and power amplifier module

Номер: TWI722927B
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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01-05-2020 дата публикации

Encoding/decoding method and electronic apparatus

Номер: TWI692972B
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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01-02-2020 дата публикации

Antenna device having a dipole antenna and a loop shaped antenna

Номер: TWM590317U
Принадлежит: MEDIATEK INC, MEDIATEK INC.

An antenna device includes a first dipole antenna, a second loop shaped antenna, a first feed line and a second feed line. The first dipole antenna operates at a first frequency band. The first dipole antenna includes a first portion and a second portion. The second loop shaped antenna operates at a second frequency band different from the first frequency band. A first terminal of the second loop shaped antennal is coupled to a second terminal of the first portion of the first dipole antenna. A second terminal of the second loop shaped antenna is coupled to a first terminal of the second portion of the first dipole antenna. The first feed line is coupled to the second terminal of the first portion of the first dipole antenna. The second feed line is coupled to the first terminal of the second portion of the first dipole antenna.

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01-04-2014 дата публикации

System having tunable performance, and associated method

Номер: TWI432955B
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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11-05-2014 дата публикации

Correlator of a gnss receiver, code generator and a correlation method of a gnss receiver

Номер: TWI437252B
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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21-11-2015 дата публикации

Directional antenna and smart antenna system using the same

Номер: TWI509888B
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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01-06-2009 дата публикации

Electronic system and recovery method

Номер: TWI310555B
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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01-11-2013 дата публикации

Dimming control apparatus and dimming control method

Номер: TWI414181B
Автор: YU CHIA LEI, YU, CHIA LEI
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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11-02-2013 дата публикации

Channel scheduling method and mobile device of tdma system

Номер: TWI385959B
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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21-07-2011 дата публикации

Buffer for driving and receiving operation and bi-direction buffer

Номер: TWI345903B
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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29-04-2014 дата публикации

Method of controlling mechanical mechanisms of optical storage apparatus for peak power/current reduction, and related optical storage apparatus and machine-readable medium

Номер: US0008711664B2

An exemplary method of controlling an optical storage apparatus includes: driving a first mechanical mechanism of the optical storage apparatus by applying a first control signal to the first mechanical mechanism, wherein a second mechanical mechanism of the optical storage apparatus is inactive while the first mechanical mechanism is operating in response to the first control signal; adjusting the first control signal applied to the first mechanical mechanism when the second mechanical mechanism is requested to be active; and driving the second mechanical mechanism by applying a second control signal to the second mechanical mechanism while the first mechanical mechanism is operating in response to the adjusted first control signal.

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02-04-2015 дата публикации

METHODS USED IN TELECOMMUNICATIONS SYSTEM HAVING EARLY TERMINATION CAPABILITY

Номер: US20150094113A1
Автор: Xiu-Sheng Li, LI XIU-SHENG
Принадлежит: MEDIATEK INC.

Disclosed herein are various embodiments of methods to avoid abnormal transmit power control (TPC) behaviors occurring in a telecommunications system. Disclosed embodiments reduces the probability of misjudging an early termination indicator to avoid a telecommunications device from deriving improper TPC commands or alleviates the influence caused by improperly power control when a telecommunications device derives improper TPC commands.

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27-03-2018 дата публикации

Method, device, and adaptor for dynamically adjusting charging current of adaptor to achieve thermal protection and fast charging

Номер: US9929576B2
Принадлежит: MEDIATEK INC, MEDIATEK INC.

A method, device and adaptor for dynamically adjusting charging current of the adaptor to achieve thermal protection and fast charging. The method includes the steps of: checking whether the adaptor is capable of providing a target current for a battery connected to a charger device, and generating a check result; and according to the check result, making the adaptor to adjust a charging voltage provided by the adaptor from a first voltage to a second voltage so as to adjust the charging current supplied by the adaptor.

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01-09-2015 дата публикации

Flexible transmission device and communication device using the same

Номер: US0009123980B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

A flexible transmission device, for transmitting radio-frequency (RF) signals between a first communication module and a second communication module in a communication device, comprising a flexible substrate; a first metal sheet, formed on a plane of the flexible substrate and coupled between ground terminals of the first communication module and the second communication module; and a second metal sheet, formed on a plane of the flexible substrate different from the first metal sheet, and coupled between signal terminals of the first communication module and the second communication module, for transmitting the RF signals.

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01-09-2015 дата публикации

Control device for driving multi-function speaker by using digital mixing scheme and related control method thereof

Номер: US0009124961B2

A control device and an associated method for driving a multi-function speaker supporting a plurality of predetermined functions including at least an audio function and a non-audio function includes a digital signal mixing block and a digital-to-analog block. The digital signal mixing block is arranged for receiving a plurality of digital input signals corresponding to the predetermined functions, respectively, and generating a digital mixed signal according to the digital input signals. The digital-to-analog block is coupled to the digital signal mixing block, for generating an analog driving signal to the multi-function speaker according to the digital mixed signal.

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23-11-2010 дата публикации

Satellite search method and receiver using the same

Номер: US0007839332B2
Автор: Kun-tso Chen, CHEN KUN-TSO
Принадлежит: Mediatek Inc., MEDIATEK INC, MEDIATEK INC.

A satellite time dynamic search method and a receiver implementing such a method are disclosed. In the present invention, a predetermined period of time is sampled into multiple time samples. The time samples are sieved according to a search result of a satellite selected from candidate satellites each time. By repeatedly doing so, the finally remaining time sample will approach a true satellite system time, and accordingly the candidate satellites converge to the most possible ones as to facilitate satellite search.

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23-05-2017 дата публикации

Dynamic offload selection in mobile communication systems

Номер: US0009661546B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

A method of offload selection for a UE to select between 3GPP RAT and WLAN cell is provided. The UE receives configuration information that applies to selecting WLAN or 3GPP radio access technology (RAT). The UE determines if the UE may perform WLAN offload by evaluating 3GPP radio access network (RAN) conditions where at least one RAN condition is related to a radio signal strength or a radio signal quality in 3GPP RAT. The UE then determines if there is at least one suitable WLAN cell by evaluating WLAN conditions. The UE also determines if there is candidate traffic for WLAN offload. Finally, the UE steers the determined traffic to WLAN if the UE may perform WLAN offload and if there is at least one suitable WLAN cell. Otherwise, the UE steers the determined traffic to 3GPP RAT.

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14-04-2005 дата публикации

Detector for detecting information carried by a signal having a sawtooth-like shape

Номер: US20050078589A1
Автор: Yu-Kai Chou
Принадлежит: MEDIATEK INC.

A detector for detecting information carried by a wobble signal having a sawtooth-like shape with a base frequency of fwob. The detector includes a first band-pass filter having a center frequency close to 2*fwob for filtering the wobble signal and generating a first filtered signal, a second band-pass filter having the center frequency close to fwob for filtering the wobble signal and generating a second filtered signal, first and second comparators for respectively comparing the first and second filtered signal with a reference voltage and generating first and second compared signals, a delay unit for delaying the second compared signal by a time period, and then outputting a delayed signal, and a sampling unit for sampling the first compared signal using the delayed signal as a sampling clock, and for outputting a sampled value representing the information carried by the sawtooth wobble.

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17-01-2008 дата публикации

Multimedia Playback System, Multimedia Data Reproduction Apparatus, and Method Thereof

Номер: US20080012868A1
Автор: Sung-Yi Tsai
Принадлежит: MEDIATEK INC.

A multimedia data reproduction apparatus comprises the following: a resizer for resizing a decoded multimedia data according to information corresponding to a display definition; a memory for storing the resized multimedia data; and a memory controller for allocating the memory to store the resized multimedia data according to the information. The memory controller can allocate the memory in response to various display definitions.

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13-03-2008 дата публикации

RATE CONTROL METHOD WITH FRAME-LAYER BIT ALLOCATION AND VIDEO ENCODER

Номер: US20080063051A1
Принадлежит: MEDIATEK INC.

A video encoder controlling rate of each frame in a current frame set (Group of Picture, GOP), and method thereof. The video encoder comprises a frame grouping device, a GOP initialization device, and a GOP encoding device. The frame grouping device allocates a target bit budget RGOP to the current frame set. The GOP initialization device is coupled to the frame grouping device, and estimates a first quantization parameter QP1 based on the target bit budget RGOP and complexity of the current frame set. The GOP encoding device is coupled to the GOP initialization device, and encoding a frame in the current frame set with the second quantization parameter QP2 to generate output data.

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06-12-2007 дата публикации

WOBBLE DETECTION CIRCUIT AND METHOD FOR PROCESSING WOBBLE SIGNALS

Номер: US20070280070A1
Принадлежит: MEDIATEK INC.

The invention provides a wobble detection circuit. An exemplary embodiment of the wobble detection circuit comprises an automatic gain control module, an analog to digital converter, a digital band pass filter, and a digital band pass filter. The automatic gain control module amplifies a first input signal and a second input signal detected by a pickup head to the same magnitude to obtain a first amplified signal and a second amplified signal. The adder then subtracts the second amplified signal from the first amplified signal to obtain an analog wobble signal. The analog to digital converter then converts the analog wobble signal to a first digital wobble signal. Finally, the digital band pass filter accepts frequency components of the first digital wobble signal within a pass band and rejects frequency components of the first digital wobble signal outside the pass band to obtain a second digital wobble signal.

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30-10-2008 дата публикации

PROCESSING MODULE, CONTROL METHOD, AND ELECTRONIC SYSTEM UTILIZING THE SAME

Номер: US20080267285A1
Автор: Yuan-Chung Lee
Принадлежит: MEDIATEK INC.

A processing module for an electronic system is disclosed. The processing module processes a video signal, provides the processed video signal to a display panel, and includes a decoder and a control unit. The decoder decodes the video signal to generate a decoded data stream. The control unit determines whether to transform the decoded data stream into a transform signal according to a control signal.

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22-03-2011 дата публикации

Embedded system and interruption handling method

Номер: US0007913017B2
Принадлежит: Mediatek Inc., MEDIATEK INC, MEDIATEK INC.

An embedded system and an interruption handling method are provided. A plurality of interruption requests are received, and corresponding service routines are triggered with priority control. In the embedded system, a memory device comprises a plurality of service routines stored at different entry addresses, each related to an interruption request. A processor receives an enable signal to initialize one of the service routines through a branch instruction. A control unit buffers the interruption requests to schedule executions of corresponding service routines. When a specific service routine is to be executed, the control unit provides the branch instruction pointing to entry address of the specific service routine and asserts the enable signal to the processor, such that the processor executes the branch instruction to initialize the specific service routine.

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14-01-2003 дата публикации

Method and system for programming a peripheral flash memory via an IDE bus

Номер: US0006507881B1
Автор: Joe Chen, CHEN JOE
Принадлежит: Mediatek Inc., MEDIATEK INC, MEDIATEK INC.

A system for programming a periphery flash ROM is provided. The system in-cludes a host computer, an IDE interface, a flash controller, a flash ROM, and a micro-processor. The flash controller is coupled to the host computer through the IDE interface. The flash ROM and the microprocessor are also coupled to the flash controller. When the system enters a flash ROM programming mode, task files used between the IDE interface and the host computer are redefined by the host computer and is interpreted by the flash controller so that a firmware code from the host computer is written into the flash ROM through the flash controller. After the flash ROM is completely programmed, the task files return to their original definition. The microprocessor is required to disable the access to the flash ROM during the flash ROM programming mode. If several flash ROM programming cycles are needed in one host request, the firmware can be temporarily stored into a buffer, such as a RAM and then sequentially ...

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21-05-2013 дата публикации

Method and system for synchronizing audio and video data signals

Номер: US0008446963B2

A system for synchronizing video data and audio data for an optical disc is disclosed. The system includes a demultiplexer, for splitting a data stream into audio data and video data, the audio data having an embedded/associated audio playback time information and the video data having an embedded/associated video playback time information; an audio decoding block, having at least fast forward or slow forward functionality, for decoding the audio data to output decoded audio data; a video decoding block, having at least fast forward or slow forward functionality, for decoding the video data to output decoded video data; and a decision block, for sending at least an adjustment signal, wherein the adjustment signal is for instructing either the video decoding block or the audio decoding block to perform fast forward or slow forward operations.

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16-10-2018 дата публикации

Power configuration verification of power-management system

Номер: US0010101389B2
Принадлежит: MEDIATEK INC., MEDIATEK INC, MediaTek Inc.

A method for verifying a power-management system including a controller and a plurality of power devices, wherein the controller receives a plurality of input signals to generate a plurality of control signals to control the power devices, includes: determining each of the power devices operating in a corresponding mode when the power-management operates under a power configuration; determining a target combination of the control signals when each of the power devices operates in the corresponding mode; patternlessly verifying a behavior of the controller with an input combination of the input signals for the power-management system operating under the power configuration to generate a calculated result of the control signals; comparing the calculated result to the target combination; and determining that the input combination is valid when the calculated result is equal to the target combination.

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16-09-2014 дата публикации

Sounding mechanism under carrier aggregation

Номер: US0008837394B2

Sounding mechanism for LTE-A systems under carrier aggregation is provided. A UE receives an uplink or downlink grant transmitted from an eNB over a primary carrier in a multi-carrier LTE-A system. The UE determines indicated carrier(s) and detects a triggering condition for aperiodic sounding transmission in the grant. The UE then selects UE-specific sounding reference signal (SRS) parameters. Finally, the UE transmits an aperiodic SRS (ap-SRS) over the indicated carrier(s) using the selected UE-specific SRS parameters. In one embodiment, the uplink or downlink grant is transmitted via a PDCCH carrying various DCI formats. Each DCI format contains a carrier indicator field (CIF) that indicates which carrier is used for ap-SRS transmission if cross-carrier scheduling is enabled. In another embodiment, DCI format 3/3A is transmitted via a PDCCH carrying a plurality of information fields, each field indicates if the UE should enable ap-SRS in a particular carrier.

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08-08-2017 дата публикации

Matching circuit for antenna and associated method

Номер: US0009728852B2
Принадлежит: MEDIATEK INC., MEDIATEK INC, MEDIATEK Inc.

A matching circuit for an antenna of whatever type, includes a ground circuit and a feed circuit. The ground circuit connects a ground terminal of the antenna to a ground voltage, and provides an inductive impedance between the ground terminal and the ground voltage. The feed circuit connects a feed signal to a feed terminal of the antenna. The feed circuit is capable of switching between a first mode and a second mode for respectively providing a first equivalent impedance and a second equivalent impedance between the feed signal and the feed terminal. An associated method is also disclosed.

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24-09-2019 дата публикации

SGS or GSGSG pattern for signal transmitting channel, and PCB assembly, chip package using such SGS or GSGSG pattern

Номер: US10426035B2
Принадлежит: MEDIATEK INC, MEDIATEK INC.

A substrate having multiple metal layers is disclosed. The substrate includes a plurality of metal layers disposed in different levels. The plurality of metal layers includes a lower metal layer, a middle metal layer situated overlying the lower layer, and an upper metal layer situated overlying the middle metal layer. A solder mask covers the upper metal layer. A reference plane is arranged in the lower metal layer. A trio of signal traces is arranged in the middle metal layer. The trio of signal traces comprises at least a pair of differential signal traces. A plurality of reference nets is arranged in the middle metal layer.

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20-12-2011 дата публикации

Method for tuning a digital compensation filter within a transmitter, and associated digital compensation filter and associated calibration circuit

Номер: US0008081936B2

A method for tuning a digital compensation filter within a transmitter includes: obtaining at least one loop gain calibration result by performing loop gain calibration based upon signals of at least a portion of the transmitter, and obtaining at least one resistance-capacitance (RC) detection result by performing RC detection on the portion of the transmitter without individually measuring resistance values of resistors therein and capacitance values of capacitors therein, wherein the RC detection result corresponds to a detected value representing a product of a resistance value and a capacitance value, and the digital compensation filter includes a gain compensation module and an RC compensation module; and tuning the digital compensation filter by respectively inputting the loop gain calibration result and the RC detection result into the gain compensation module and the RC compensation module. An associated digital compensation filter and an associated calibration circuit are also ...

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15-08-2006 дата публикации

Method and apparatus for controlling laser beam power in an optical recording system

Номер: US0007092338B2
Принадлежит: MediaTek Inc., MEDIATEK INC, MEDIATEK INC.

In a method and apparatus for controlling the power of a laser beam in an optical recording system that includes a laser light source, an optical detector detects a reflected write pulse that is a reflection of an incident recording light signal from the optical recording medium, and a signal generating device generates a mark formation effectiveness (MFE) signal according to the reflected write pulse. A laser power compensation circuit includes a filter for filtering the MFE signal so as to result in a first component, and a combiner for combining the first component and the MFE signal so as to result in a second component. The laser power compensation circuit controls laser beam power of the laser light source according to the first and second components for optimum information recording.

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19-04-2016 дата публикации

Auto-convergence system with active learning and related method and machine-readable medium thereof

Номер: US0009317958B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

An auto-convergence system includes a disparity unit, a convergence unit and an active learning unit. The disparity unit performs a disparity analysis upon an input stereo image pair, and accordingly obtains a disparity distribution of the input stereo image pair. The convergence unit adjusts the input stereo image pair adaptively according to the disparity distribution and a learned convergence range, and accordingly generates an output stereo image pair for playback. The active learning unit actively learns a convergence range during playback of stereo image pairs, and accordingly determines the learned convergence range.

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13-10-2020 дата публикации

Perception-based image processing apparatus and associated method

Номер: US0010805519B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

A perception-based image processing apparatus includes an image analyzing circuit and an application circuit. The image analyzing circuit obtains training data, sets a perception model according to the training data, performs an object detection of at least one frame, and generates an object detection information signal based at least partly on a result of the object detection of said at least one frame. The application circuit operates in response to the object detection information signal.

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15-09-2009 дата публикации

Amplifier circuit having stacked main amplifier and parallel sub-amplifier

Номер: US0007589593B2
Принадлежит: Mediatek Inc., MEDIATEK INC, MEDIATEK INC.

An amplifier circuit for amplifying an input signal to generate an output signal is provided. The amplifier circuit has a stacked main amplifier, a parallel sub-amplifier, and a signal combiner. The stacked main amplifier includes a first amplifier unit for outputting a first amplified signal generated from processing the input signal; and a second amplifier unit for outputting a second amplified signal generated from processing the first amplified signal. The first amplifier unit and the second amplifier unit share bias current. The parallel sub-amplifier is coupled to the stacked main amplifier according to a parallel connection fashion, and outputs a third amplified signal generated from processing the input signal. The signal combiner combines the second amplified signal and the third amplified signal to generate the output signal.

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22-09-2009 дата публикации

CABAC decoding unit and method

Номер: US0007592937B1
Принадлежит: Mediatek Inc., MEDIATEK INC, MEDIATEK INC.

A context-based adaptive binary arithmetic coding (CABAC) method. The CABAC method for a bitstream comprises: detecting a control signal (Sig_first); decoding a first bin representing one of a first coefficient flag (Sig) and a second coefficient flag (Last) from the bitstream according to the control signal (Sig_first); decoding a second bin representing one of the second coefficient flag (Last) and a next first coefficient flag (Sig) from the bitstream according to the decoded first bin and the control signal (Sig_first); and updating the control signal (Sig_first) according to the decoded first and second bins. The first and second bins are decoded in one clock cycle, the first coefficient flag (Sig) indicates whether a corresponding coefficient value is zero, and the second coefficient flag (Last) indicates whether a coefficient map decoding process is finished.

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25-08-2009 дата публикации

Method and apparatus for equalization

Номер: US0007580453B2
Принадлежит: Mediatek Inc., MEDIATEK INC, MEDIATEK INC.

An exemplary embodiment of an adaptive equalizer is provided, receiving symbols to generate an equalizer output. The adaptive equalizer comprises a plurality of tap cells, a coefficient updater, a plurality of multiplexers, a controller and an integrator. Each tap cell generates a filter value from a tap data value and a coefficient. The coefficient updater provides a coefficient vector comprising a plurality of coefficients updated recursively. Each multiplexer is coupled to a corresponding tap cell and the coefficient updater, switching between a normal mode and an estimation mode. The controller coupled to the multiplexers controls mode switching of each multiplexer based on each corresponding coefficient. The integrator coupled to the tap cells collects the filter values to generate an equalizer output.

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13-11-2018 дата публикации

Successive approximation register analog-to-digital converter applying calibration circuit, associated calibrating method, and associated electronic device

Номер: US0010128862B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

A Successive Approximation Register (SAR) Analog-to-Digital Converter (ADC) including: a comparing module and a calibration circuit. The comparing module is arranged to generate a first comparison result by comparing an input voltage value of the SAR ADC with a first voltage value and a second result by comparing the input voltage value with a second voltage value; the calibration circuit coupled to the comparing module is for generating a determination result determining whether the input voltage value is in a range according to the first comparison result and the second comparison result, and enters a calibration mode according to the determination result.

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20-10-2011 дата публикации

Oscillating circuit

Номер: US20110254635A1
Принадлежит: MEDIATEK INC.

An oscillating circuit including a digital sigma-delta modulator and a controlled oscillator is disclosed. The digital sigma-delta modulator receives a fractional bit signal to generate a control signal. The controlled oscillator includes a varactor dynamically coupled to receive the control signal.

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04-09-2018 дата публикации

QoS provisioning for LTE-WLAN aggregation

Номер: US0010070461B2
Принадлежит: MEDIATEK INC.

LTE-WLAN aggregation (LWA) at the radio access network level promises significant gain in system capacity and user quality of experience (QoE). In order to support QoS over LWA, there is a need to develop mechanisms to ensure that the access category (AC) classification chosen by a wireless device (AP in the case of downlink, and UE in case of uplink) is consistent with the QoS requirements of the EPS bearer/DRB and/or subscriber profile to which the traffic belongs. The cellular LTE network can provision QoS for both downlink and uplink data flows that are transferred using LWA access.

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01-12-2011 дата публикации

DATA MOVEMENT ENGINE AND MEMORY CONTROL METHODS THEREOF

Номер: US20110296095A1
Принадлежит: MEDIATEK INC.

A data movement engine (DME) for an electronic device is disclosed. The DME has an address generating module and a direct memory access (DMA) module. When the memory is switched to a lower power consumption state, a refresh area of a memory of the electronic device is refreshed and a non-refresh area of the memory is not refreshed. The address generating module obtains at least one source address of data in the non-refresh area, and generates at least one destination address for moving data from the non-refresh area to the refresh area and thereby a source-to-destination mapping table is generated. The DMA module performs a first data movement to move data from the non-refresh area to the refresh area according to the source-to-destination mapping table and independently of a microprocessor of the electronic device.

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01-12-2011 дата публикации

SEMICONDUCTOR CHIP PACKAGE

Номер: US20110291250A1
Принадлежит: MEDIATEK INC.

A semiconductor chip package is provided. The semiconductor chip package includes a lead frame having a chip carrier. A semiconductor chip is mounted on the chip carrier, having a plurality of bonding pads thereon. A package substrate has a cavity therein to accommodate the chip carrier and the semiconductor chip, wherein at least one of the bonding pads of the semiconductor chip is electrically coupled to the package substrate.

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01-01-2019 дата публикации

Method for performing positioning operation and associated electronic device

Номер: US0010171948B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

An electronic device includes an application processor and a sensor hub, where the application processor is arranged for executing applications running on a system of the electronic device, and the sensor hub is arranged for obtaining and processing sensed data from a plurality of sensors within the electronic device. In addition, the application processor further downloads location data from a remote device via a network module, and at least a portion of the downloaded location data is further stored in a storage unit of the sensor hub to be reused for positioning.

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11-10-2016 дата публикации

Flash ADC with interpolators

Номер: US0009467160B2
Принадлежит: MEDIATEK INC., MEDIATEK INC, MediaTek Inc.

An ADC is provided. The ADC includes a plurality of pre-amplifiers, dynamic comparators coupled to the pre-amplifiers, interpolators and an encoder. Each pre-amplifier provides a pair of differential outputs according to a pair of differential analog signals and a first reference voltage and a second reference voltage different from the first reference voltage. Each dynamic comparator provides a first comparing signal and a second comparing signal according to the pair of differential outputs of the corresponding pre-amplifier. Each interpolator provides an interpolating signal according to the first and second comparing signals of two of the dynamic comparators. The encoder provides a digital output according to the interpolating signals. The first and second comparing signals are the same in a reset phase, and the first and second comparing signals are complementary according to the pair of differential outputs of the corresponding pre-amplifier in an evaluation phase.

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20-07-2010 дата публикации

Flip-flop and pipelined analog-to-digital converter utilizing the same

Номер: US0007760117B1
Автор: Yu-Kai Chou, CHOU YU-KAI
Принадлежит: Mediatek Inc., MEDIATEK INC, MEDIATEK INC.

A flip-flop includes a sense amplifier stage and a latch stage. The sense amplifier includes a first P type transistor and generates a first sensed signal and a second sensed signal in a first node and a second node, respectively. When the first P type transistor is turned on, the first node is connected to the second node. The latch stage generates a first output signal and a second output signal according to the first and the second sensed signals.

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24-09-2009 дата публикации

SEMICONDUCTOR CHIP PACKAGE

Номер: US20090236709A1
Принадлежит: MEDIATEK INC.

A semiconductor chip package is disclosed. The semiconductor chip package comprises a lead frame having a chip carrier, wherein the chip carrier has a first surface and an opposite second surface. A semiconductor chip is mounted on the first surface, having a plurality of bonding pads thereon, wherein the semiconductor chip has an area larger than that of the chip carrier. A package substrate comprises a central region attached to the second surface, having an area larger than that of the semiconductor chip, wherein some of the bonding pads of the semiconductor chip are electrically connected to a marginal region of the package substrate.

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23-05-2013 дата публикации

Method and Apparatus of Slice Boundary Padding for Loop Filtering

Номер: US20130128986A1
Принадлежит: MEDIATEK INC.

A method and apparatus for video processing of reconstructed video in a reconstruction loop are disclosed. An embodiment according to the present invention performs padding for the blocks in the slice boundaries according to a processing order. Each of the one or more reconstructed blocks at slice boundaries is padded according to a padding order. In-loop filtering is applied to the reconstructed slice according to the processing order, wherein the reconstructed slice is filtered by referencing the one or more padded blocks. The padding order can be vertical-edge first and then horizontal-edge, or horizontal-edge first and then vertical-edge. Various embodiments are disclosed regarding whether padding for a later padded block in the processing order is skipped or not in the overlapped area. The present invention is also applied to adaptation blocks for block-based in-loop filtering in slice boundaries.

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15-02-2018 дата публикации

METHOD AND DEVICE OF SENDING MEASUREMENT REPORT

Номер: US20180049081A1
Принадлежит: MEDIATEK INC.

Aspects of the disclosure provide a method that includes receiving a measurement configuration message indicating a predetermined number. A measurement event is defined based on the predetermined number of signal beams from a serving base station and the predetermined number of signal beams from a neighboring base station. The method also includes identifying a first number of best signal beams from the serving base station and a second number of best signal beams from the neighboring base station, where the first number and the second number are equal to or less than the predetermined number. The method further includes determining whether the measurement event occurs based on the first number of best signal beams from the serving base station and the second number of best signal beams from the neighboring base station, and sending a measurement report when the measurement event occurs.

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06-06-2013 дата публикации

MOBILE COMMUNICATION CIRCUIT REPORTING LOCATION INFORMATION AND METHODS THEREOF

Номер: US20130143589A1
Автор: Yu-Cheng HUANG
Принадлежит: MEDIATEK INC.

Mobile communication circuit reporting location information and methods thereof are provided. The circuit comprises a receiver, a transmitter, and a control circuit. The receiver receives first and second location information requests comprising respective first and second timing periods at first and second reference times respectively. The transmitter transmits first location information at a first reporting time having a first timing lapse from the first reference time in response to the first location information request and the second location information at a second reporting time in response to the second location information request. The control circuit, coupled to the receiver and the transmitter, calculates a timing difference between the first reporting time and the second reporting time, and determines second location information according to the first location information when the timing difference is less than or equal to a predetermined timing difference threshold.

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14-07-2015 дата публикации

Signal transceiver

Номер: US0009083293B2

A signal transceiver includes a first power amplifier coupled to a chip output port of a chip; an impedance transforming circuit; a switching circuit arranged to selectively couple the chip output port to a first port of the impedance transforming circuit; and a receiving amplifier coupled to a second port of the impedance transforming circuit.

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26-06-2012 дата публикации

Radio frequency receiver and radio frequency transmitter

Номер: US0008208881B2
Автор: Chia-Hsin Wu, WU CHIA-HSIN

A radio-frequency receiver. The radio-frequency receiver includes a first and second low noise amplifier (LNA), a local oscillating module, and a first, second, and third mixer. The first LNA amplifies a first RF signal. The local oscillating module generates a first, second and third local oscillating signals. The first local oscillating signal is generated according to the second local oscillating signal. The first mixer mixes the first RF signal with the first local oscillating signal to generate an intermediate frequency signal. The second LNA amplifies a second RF signal. The second and third mixers can be operated in two modes. The second and third mixers mix the intermediate frequency signal to generate a first and second baseband signal respectively in the first mode, and the second and third mixers mix the second RF signal with the second and third oscillating frequency respectively in a second mode.

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31-03-2020 дата публикации

Method for performing polar decoding with aid of notation transformation and associated polar decoder

Номер: US0010608675B1
Принадлежит: MEDIATEK INC., MEDIATEK INC

A method for performing polar decoding with aid of notation transformation and associated polar decoder are provided. The method includes: transforming input signals from a 2's complement notation to a signed magnitude notation to generate transformed input signals, wherein during the polar decoding, a plurality of first sub-operations and a plurality of second sub-operations are performed to generate decoding results of the transformed input signals; performing a first sign processing to generate a sign result of a first sub-operation within the plurality of first sub-operations; performing a first magnitude processing to generate a magnitude result of the first sub-operation within the plurality of first sub-operations; performing a second sign processing to generate a sign result of a second sub-operation within the plurality of second sub-operations; and performing a second magnitude processing to generate a magnitude result of the second sub-operation within the plurality of second ...

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15-09-2015 дата публикации

Method for enhancing positioning measurement and communications apparatus utilizing the same

Номер: US0009137775B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

A communications apparatus is disclosed. A receiving module receives an observed time difference of arrival (OTDOA) request and a search list of cells provided by a network at a second time point. A comparing module compares the received search list to a stored search list of cells which is received at a first time point and stored in a database. A searching module searches at least one of the cells from the received search list by using different search ranges adjusted according to the comparison result, and stores the at least one of the cells in the database. A measuring module performs OTDOA measurements by detecting positioning reference signals (PRS) from the at least one of the cells.

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25-10-2012 дата публикации

SEMICONDUCTOR PACKAGE

Номер: US20120267779A1
Принадлежит: MEDIATEK INC.

The invention provides a semiconductor package. The semiconductor package includes a semiconductor die having a central area and a peripheral area surrounding the central area. A first conductive bump is disposed on the semiconductor die in the central area. A second conductive bump is disposed on the semiconductor die in the peripheral area. An area ratio of the first conductive bump to the second conductive bump from a top view is larger than 1, and less than or equal to 3. 1. A semiconductor package , comprising:a semiconductor die; anda first conductive bump and a second conductive bump respectively disposed on the semiconductor die, wherein an area ratio of the first conductive bump to the second conductive bump from a top view is larger than 1, and less than or equal to 3.2. The semiconductor package as claimed in claim 1 , wherein the semiconductor die has a central area and a peripheral area surrounding the central area claim 1 , and wherein the first conductive bump is disposed on the semiconductor die in the central area claim 1 , and the second conductive bump is disposed on the semiconductor die in the peripheral area.3. The semiconductor package as claimed in claim 1 , wherein the semiconductor die has a central area and a peripheral area surrounding the central area claim 1 , and wherein the first conductive bump is disposed on the semiconductor die in the peripheral area claim 1 , and the second conductive bump is disposed on the semiconductor die in the central area.4. The semiconductor package as claimed in claim 1 , wherein the first conductive bump and the second conductive bump are alternatively disposed on the semiconductor die.5. The semiconductor package as claimed in claim 1 , wherein the first conductive bump and the second conductive bump are randomly disposed on the semiconductor die.6. The semiconductor package as claimed in claim 1 , wherein the first conductive bump is a circular shape from the top view.7. The semiconductor package as ...

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03-10-2013 дата публикации

SEMICONDUCTOR PACKAGE

Номер: US20130256878A1
Принадлежит: MEDIATEK INC.

The invention provides a semiconductor package. The semiconductor package includes a semiconductor package includes a substrate having a die attach surface. A die is mounted on die attach surface of the substrate via a conductive pillar bump. The die comprises a metal pad electrically coupling to the conductive pillar bump, wherein the metal pad has a first edge and a second edge substantially vertical to the first edge, wherein the length of the first edge is different from that of the second edge from a plan view.

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31-12-2009 дата публикации

VIDEO ENCODING APPARATUSES AND METHODS WITH DECOUPLED DATA DEPENDENCY

Номер: US20090323810A1
Принадлежит: MEDIATEK INC.

The invention provides an apparatus for video encoding with decoupled data dependency. In one embodiment, the apparatus comprises a buffer, a hardware circuit, and a parameter determination module. The hardware circuit, coupled to the buffer, generates and stores data during performing motion estimation on a current frame and encoding a plurality of macroblocks of the current frame in the buffer. The parameter determination module, coupled to the hardware circuit and the buffer, retrieves the stored data from the buffer, generates at least one reference parameter for a plurality of macroblocks of a future frame according to the retrieved data, and updates data of the buffer with the generated reference parameters after receiving a triggering signal indicating start of data preparation for the future frame from the hardware circuit.

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05-11-2009 дата публикации

MEMORY CONTROLLER AND METHOD FOR WRITING A DATA PACKET TO OR READING A DATA PACKET FROM A MEMORY

Номер: US20090276556A1
Автор: Hsiang-I HUANG
Принадлежит: MEDIATEK INC.

A memory controller and a method for data access are provided. The memory controller writes a data packet to or reads a data packet from a memory. The memory controller comprises a first register, a second register, a data packet adjuster, and a burst length determination unit. The first register stores a data bus width. The second register stores an operating frequency of the memory controller. The burst length determination unit determines a burst length according to the operating frequency. The data packet adjuster adjusts the data packet according to the data bus width and the burst length.

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27-09-2012 дата публикации

METHOD FOR OPERATING ELECTRONIC DEVICE AND ELECTRONIC DEVICE USING THE SAME

Номер: US20120242818A1
Принадлежит: MEDIATEK INC.

An electronic device includes a first image sensor and a central processing unit (CPU). The first image sensor detects at least one frame on the user's side. The CPU determines an expression of the user by the at least one frame on the user's side, and determines whether the expression of the user matches a predetermined expression defining a function operation of the electronic device. The CPU performs the functional operation when the expression of the user matches the predetermined expression. 1. An electronic device , comprising:a first image sensor for detecting at least one frame on the user's side;a central processing unit (CPU), determining an expression of the user by the at least one frame on the user's side, and determining whether the expression of the user matches a predetermined expression defining a function operation of the electronic device, performing the functional operation when the expression of the user matches the predetermined expression.2. The electronic device as claimed in claim 1 , further comprising a second image sensor claim 1 , configured to capturing an object image.3. The electronic device as claimed in claim 1 , wherein the electronic device is a digital camera.4. The electronic device as claimed in claim 1 , further comprising a graphic unit claim 1 , wherein the CPU further controls the graphic unit to render messages indicating that the functional operation is about to be performed claim 1 , when the expression of the user matches the predetermined expression.5. The electronic device as claimed in claim 1 , wherein the CPU further confirms the user intentions by detecting a time period of the expression of the user.6. The electronic device as claimed in claim 1 , further comprising a memory unit claim 1 , wherein the functional operation is a function capable of retrieving image data claim 1 , and the retrieved image data is stored in the memory unit when the functional operation is performed.7. The electronic device as claimed ...

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11-05-2021 дата публикации

Power-saving mechanism for memory sub-system in pipelined processor

Номер: US0011003457B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

A pipelined processor for carrying out pipeline processing of instructions, which undergo a plurality of stages, is provided. The pipelined processor includes: a memory-activation indicator and a memory controller. The memory-activation indicator stores content information that indicates whether to activate a first volatile memory and/or a second volatile memory while performing a current instruction. The memory controller is arranged for controlling activation of the first volatile memory and/or the second volatile memory in a specific stage of the plurality of stages of the current instruction according to the content information stored in the memory-activation indicator.

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21-08-2012 дата публикации

Audio processing apparatuses

Номер: US0008249862B1

An audio processing apparatus is provided. A beamformer receives input signals and processes the input signals to generate a first processed signal. The input signals include at least one of a source signal and interference. A blocking matrix receives the input signals and operates to cancel the source signal from the input signals to generate a second processed signal. A first adaptive filter has adaptable first filter coefficients, generates a first filtered signal approximating the interference according to the first and second processed signals and continuously adapts the first filter coefficients according to the first filtered signal and the first processed signal. A second adaptive filter has adaptable second filter coefficients, generates a second filtered signal approximating the interference according to the first and second processed signals and selectively adapts the second filter coefficients according to the first filter coefficients and an output signal.

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15-04-2010 дата публикации

STATIC RANDOM ACCESS MEMORIES AND ACCESS METHODS THEREOF

Номер: US20100091585A1
Принадлежит: MEDIATEK INC.

A static random access memory device capable of preventing stability issues during a write operation is provided, in which a memory cell is coupled to a read word line, a write word line, a read bit line, a write bit line and a complementary write bit line, and a multiplexing unit is coupled to the read bit line, the write bit line and the complementary write bit line. The multiplexing unit applies first and second logic voltages representing a logic state stored in the memory cell to the write bit line and the complementary write bit line, respectively, when the memory cell is not selected to be written by an input signal from a data driver and the read word line is activated, in which the first and second logic voltages are opposite to each other.

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17-12-2013 дата публикации

Information browsing method for partitioning contents of page and assigning identifiers to data partitions and related machine-readable medium thereof

Номер: US8612850B2

An information browsing method includes: partitioning contents of a page into a plurality of first data partitions by analyzing the contents of the page; assigning a plurality of first identifiers to the first data partitions, respectively; driving a display screen according to at least the first data partitions; and when receiving a partition selection input, determining a selected first data partition according to a first identifier corresponding to the partition selection input, wherein the selected first data partition is assigned with the first identifier.

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11-02-2020 дата публикации

Circuit board and packaged chip

Номер: US0010559513B2

A circuit board includes an upper circuit and a lower surface that are opposite to each other, a plurality of heat sink bonding pads, and a plurality of heat sink conductive pads. The heat sink bonding pads are disposed on the upper surface and electrically insulated from one another, and are used to electrically connect to a heat sink. The heat sink conductive pads are disposed on the lower surface, electrically insulated from one another, and electrically connected to the heat sink bonding pads, respectively.

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12-03-2019 дата публикации

Apparatus for performing hybrid power control in an electronic device with aid of multiple switches corresponding multi-purpose usage

Номер: US10230259B2
Принадлежит: MEDIATEK INC, MEDIATEK INC.

An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip. For example, the charger may include: a plurality of terminals that are positioned on the charger chip, where the plurality of terminals may include a third terminal and a fourth terminal; a plurality of switching units, positioned on the charger chip; and a control circuit, positioned on the charger chip and coupled to the plurality of switching units. The third terminal and the fourth terminal may be arranged for installing an inductor, where the inductor may be utilized by the charger when the control circuit configures the charger into any of at least two hardware configurations within a plurality of hardware configurations.

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16-05-2017 дата публикации

Apparatus and method for controlling impedance tuning by using hybrid control algorithm

Номер: US0009654059B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

An impedance tuning control apparatus has a processing circuit and an output circuit. The processing circuit determines a first control setting according to a first performance metric, and performs a search operation with a search start point set by the first control setting to find a second control setting according to a second performance metric. The second performance metric is different from the first performance metric. The output circuit outputs a final control setting to a tuner, wherein the final control setting is derived from the second control setting.

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24-07-2018 дата публикации

Synchronization controller for multi-sensor camera device and related synchronization method

Номер: US0010033989B2
Принадлежит: MEDIATEK INC., MEDIATEK INC

A synchronization controller for a multi-sensor camera device includes a detection circuit and a control circuit. The detection circuit detects asynchronization between image outputs generated from the multi-sensor camera device, wherein the image outputs correspond to different viewing angles. The control circuit controls an operation of the multi-sensor camera device in response to the asynchronization detected by the detection circuit. In addition, a synchronization method applied to a multi-sensor camera device includes following steps: detecting asynchronization between image outputs generated from the multi-sensor camera device, wherein the image outputs correspond to different viewing angles; and controlling an operation of the multi-sensor camera device in response to the detected asynchronization.

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13-06-2017 дата публикации

Mobile devices, terminal devices, and authentication methods thereof

Номер: US0009680828B2
Принадлежит: MEDIATEK INC., MEDIATEK INC, MediaTek Inc.

A mobile device including a touch panel and a processing unit is provided. The touch panel includes one transmitting electrode and one receiving electrode. The transmitting electrode performs signal transmission using a touch-link technology, and the receiving electrode performs signal reception using the touch-link technology. The processing unit receives a message from a terminal device via the receiving electrode, and transmits an identification number to the terminal device via the transmitting electrode according to the message, so as to use the identification number for a verification on the terminal device.

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20-06-2017 дата публикации

Method for performing wireless charging control with aid of admittance detection, and associated apparatus

Номер: US0009685815B2
Принадлежит: MediaTek Inc., MEDIATEK INC, MEDIATEK INC.

A method for performing wireless charging control and an associated apparatus are provided, where the method may include: performing current detection and voltage detection to monitor a driving current and a driving voltage within the wireless charging transmitter, respectively, wherein the driving current and the driving voltage are utilized for driving a power output coil of the wireless charging transmitter; generating a set of indexes at least according to the driving current and the driving voltage, wherein the set of indexes may include a power loss index indicating power loss of a wireless charging operation performed by the wireless charging transmitter, and may further include an admittance-related index corresponding to any of a ratio of the driving current to the driving voltage or a reciprocal of the ratio of the driving current to the driving voltage; and performing wireless charging foreign object detection (FOD) according to the set of indexes.

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07-12-2010 дата публикации

Соmmuniсаtiоn sуstеm fоr utilizing singlе tоnе tеsting signаl hаving spесifiс frеquеnсу оr соmbinаtiоns оf DС vаluе аnd singlе tоnе tеsting signаl tо саlibrаtе impаirmеnts in trаnsmitting signаl

Номер: US0027487688B2
Принадлежит: Mediatek Inc., MEDIATEK INC, MEDIATEK INC.

А соmmuniсаtiоn sуstеm fоr dеtеrmining а tаrgеt саlibrаtiоn pаrаmеtеr fоr саlibrаting impаirmеnts in а trаnsmissiоn signаl is disсlоsеd. Тhе соmmuniсаtiоn sуstеm inсludеs а саrriеr signаl gеnеrаtоr, а trаnsmitting mоdulе, а tеsting signаl gеnеrаtоr, а pоwеr dеtесtiоn unit, аnd а саlibrаtiоn аppаrаtus. Тhе tеsting signаl gеnеrаtоr gеnеrаtеs а first tеsting signаl tо thе first trаnsmitting pаth оf thе trаnsmitting mоdulе оr а sесоnd tеsting signаl tо thе sесоnd trаnsmitting pаth оf thе trаnsmitting mоdulе ассоrding tо а singlе tоnе signаl hаving а spесifiс frеquеnсу оr ассоrding tо соmbinаtiоns оf а DС vаluе аnd thе singlе tоnе signаl. Тhе pоwеr dеtесtiоn unit dеtесts pоwеr оf соmpоnеnts аssосiаtеd with thе spесifiс frеquеnсу in thе trаnsmissiоn signаl tо gеnеrаtе а pоwеr indiсаting signаl. Тhе саlibrаtiоn аppаrаtus аppliеs а first саndidаtе саlibrаtiоn pаrаmеtеr tо rеfеrеnсе а first pоwеr indiсаting signаl соrrеspоnding tо thе first саndidаtе саlibrаtiоn pаrаmеtеr tо dеtеrminе thе tаrgеt ...

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23-11-2010 дата публикации

Sаtеllitе sеаrсh mеthоd аnd rесеivеr using thе sаmе

Номер: US0020318614B2
Автор: Kun-tso Chen, CHEN KUN-TSO
Принадлежит: Mediatek Inc., MEDIATEK INC, MEDIATEK INC.

А sаtеllitе timе dуnаmiс sеаrсh mеthоd аnd а rесеivеr implеmеnting suсh а mеthоd аrе disсlоsеd. In thе prеsеnt invеntiоn, а prеdеtеrminеd pеriоd оf timе is sаmplеd intо multiplе timе sаmplеs. Тhе timе sаmplеs аrе siеvеd ассоrding tо а sеаrсh rеsult оf а sаtеllitе sеlесtеd frоm саndidаtе sаtеllitеs еасh timе. Ву rеpеаtеdlу dоing sо, thе finаllу rеmаining timе sаmplе will аpprоасh а truе sаtеllitе sуstеm timе, аnd ассоrdinglу thе саndidаtе sаtеllitеs соnvеrgе tо thе mоst pоssiblе оnеs аs tо fасilitаtе sаtеllitе sеаrсh.

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15-08-2023 дата публикации

Simultaneous uplink transmissions

Номер: US0011729816B2
Автор: Chiou-Wei Tsai
Принадлежит: MEDIATEK INC., Mediatek Inc.

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The apparatus may be a UE. The UE determines to transmit a preamble sequence to a base station at a random access occasion in a random access procedure when the UE is in a connected state. The UE determines that the random access occasion is in a same predetermined time period as an uplink channel or a sounding reference signal that is scheduled to be transmitted to the base station. The UE refrains from transmitting the preamble sequence or refraining from transmitting the uplink channel or the sounding reference signal.

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24-05-2022 дата публикации

EPS bearer context status synchronization upon inter-system change from evolved packet system (EPS) to fifth generation system (5GS)

Номер: US0011343699B2
Автор: Chien-Chun Huang-Fu
Принадлежит: MEDIATEK INC.

A method for synchronizing evolved packet system (EPS) bearer context status between a user equipment (UE) and a network can include locally deactivating an EPS bearer context of a packet data network (PDN) connection at the UE while the UE operates in S1 mode without notifying the network serving the UE, wherein interworking to a fifth generation system (5GS) is supported for the deactivated EPS bearer context, and upon inter-system change from S1 mode to N1 mode, including an EPS bearer context status information element (IE) in a registration request message indicating which EPS bearer contexts are active in the UE before the inter-system change.

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03-08-2022 дата публикации

INTERLEAVING QUANTIZER IN CONTINUOUS-TIME DELTA-SIGMA MODULATOR FOR QUANTIZATION LEVEL INCREMENT

Номер: EP3490152B1
Автор: HSIEH, Hung-Yi
Принадлежит: MEDIATEK INC.

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09-08-2012 дата публикации

Vorrichtung und Verfahren zum Prüfen einer integrierten Schaltung

Номер: DE102006045081B4
Принадлежит: MEDIATEK INC, MEDIATEK INC.

Vorrichtung zum Prüfen einer integrierten Schaltung eines kommerziellen elektronischen Produkts, umfassend: a) eine Strom- bzw. Spannungsquelle; b) eine Schalteinrichtung; c) eine Prüfeinrichtung, die umfasst: eine Fassung (1320), die ausgelegt ist, um die integrierte Schaltung (137) aufzunehmen; eine Leiterplatine (1331), die im Wesentlichen identisch zu derjenigen des kommerziellen elektronischen Produkts ist und ausgelegt ist, um die integrierte Schaltung zu beinhalten; und eine Mehrzahl von Leitern (140), die zumindest einen elektrischen Kontakt der integrierten Schaltung mit zumindest einem elektrischen Kontakt der Leiterplatine leitend verbinden; dadurch gekennzeichnet, dass die Prüfeinrichtung außerdem einen leitenden Kasten (1310) umfasst, der eine Stufe aufweist, die einen oberen Abschnitt des leitenden Kastens bildet, wobei die ht ist und die Leiterplatine auf einer unteren Fläche der Stufe angebracht ist, wobei die Vorrichtung zum Prüfen der integrierten Schaltung außerdem eine ...

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09-12-2010 дата публикации

System und Verfahren zur Fernsteuerung von mobilen Stationen

Номер: DE102006037103B4
Принадлежит: MEDIATEK INC, MEDIATEK INC.

Ein Verfahren zur Fernsteuerung einer ersten mobilen Station durch einen Kontroller umfassend: Initialisieren einer Authentifizierungsprozedur nach Empfang einer Fernsteuerungsanfrage von dem Kontroller, umfassend: Die erste mobile Station überträgt eine Authentifizierungsanfrage an den Kontroller; die erste mobile Station empfängt vom Kontroller eine Authentifizierungsantwort, umfassend Authentifizierungsdaten als Antwort auf die Authentifizierungsanfrage; nach Empfang der Authentifizierungsanfrage, überprüft die erste mobile Station die Authentifizierungsdaten, um die Authentizität des Kontrollers zu bestimmen; und die erste mobile Station überträgt eine Fernsteuerungsbestätigung an den Kontroller nach Bestätigung der Authentizität; Nach dem Übertragen der Fernsteuerungsbestätigung, empfängt die erste mobile Station vom Kontroller eine Fernsteuerungsinstruktion und eine Rückruftelefonnummer des Kontrollers; und nach Empfangen der Fernsteuerungsinstruktion, führt die erste mobile Station ...

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19-01-2012 дата публикации

Code-Speicher geeignet zur Code-Bereitstellung für eine Vielzahl von physikalischen Kanälen

Номер: DE102008059730B4
Принадлежит: MEDIATEK INC, MEDIATEK INC.

Code-Speicher, der geeignet zur Code-Bereitstellung für eine Vielzahl von physikalischen Kanälen ist, umfassend: einen Multiplexer-Schaltkreis, der eine ODER-Funktion an einer Vielzahl von Adressen ausführt, die durch eine Vielzahl von physikalischen Kanälen erzeugt wird, um ein Code-Speicher-Adressierungs-Signal zu erzeugen; und ein inneres Speicher-Modul, das mit dem Multiplexer-Schaltkreis verbunden ist und Code-Daten speichert sowie die Code-Daten gemäß dem Code-Speicher-Adressierungs-Signal abruft, um ein Code-Speicher-Datensignal zu erzeugen.

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06-11-2008 дата публикации

CDROM KOPIERSCHUTZ

Номер: DE0060229038D1
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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06-08-2009 дата публикации

KRISTALLOSZILLATOR MIT GERINGER LEISTUNG

Номер: DE0060232714D1
Принадлежит: MEDIATEK INC, MEDIATEK INC.

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16-06-2020 дата публикации

METHOD AND APPARATUS OF PALETTE INDEX MAP CODING FOR SCREEN CONTENT CODING

Номер: CA0003000758C
Принадлежит: MEDIATEK INC, MEDIATEK INC.

A method and apparatus for video coding using coding modes including a palette mode are disclosed. In one embodiment, the total number of palette indices in the current block is coded into a binary string using a TR (Trun-cated Rice) binarization process with the Rice parameter to generate a prefix part and using an EGk (k-th order Exp-Go -lomb) binary process to generate a suffix part for the binary string, or using the EGk binarization process with the Rice parameter (k). The suffix part is allowed to be empty. In another embodiment, a Rice parameter is determined. If the Rice parameter is equal to or greater than log-base-2 of current block size, the variable related to a total number of palette indices in the current block of video data is binarized into a binary string using a fixed-length code with bit length equal to log-base-2 of current block size.

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12-01-2012 дата публикации

Method and Apparatus of Temporal Motion Vector Prediction

Номер: US20120008688A1
Принадлежит: MEDIATEK INC.

An apparatus and method for motion vector prediction for a current block in a picture are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the information to be transmitted. Motion Vector Prediction (MVP) has been used to further conserve the bitrate associated with motion vector. In conventional temporal MVP, the predictor is often based on a single candidate such as the co-located motion vector in the previous frame/picture. If the co-located motion vector in the previous frame/picture does not exist, the predictor for the current block is not available. A technique for improved MVP is disclosed where the MVP utilized multiple candidates based on co-located motion vectors from future and/or past reference pictures. The candidates are arranged according to priority order to provide better availability of MVP and also to provide more accurate prediction. Furthermore, the MVP technique disclosed can be operated in a closed-loop fashion so that no additional side information or minimum additional side information is required. 1. A method of deriving a motion vector predictor or motion vector predictor candidate or motion vector or motion vector candidate for a current block in a picture , the method comprising:receiving two or more motion vectors associated with at least one temporal block from a group consisting of one or more list 0 reference pictures and one or more list 1 reference pictures;determining a candidate set based on said two or more motion vectors, wherein the candidate set consists of at least two elements;arranging the candidate set in a priority order; anddetermining the motion vector predictor or motion vector predictor candidate or motion vector or motion vector candidate for the current block from the candidate set according to the priority order.2. The method of claim 1 , wherein the priority order is a pre-defined priority order.3. The method of claim 2 , wherein ...

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12-01-2012 дата публикации

TIMING RECOVERY APPARATUS AND METHOD THEREOF

Номер: US20120008725A1
Автор:
Принадлежит: MEDIATEK INC.

A multimedia processing system for processing a program stream containing a program clock reference information. The system comprises a clock generator, a timer, a modifier, a processing unit, a parser and a compensator. The clock generator generates a clock signal. The timer receives the clock signal and generates a time information. The modifier incorporates a timing reference information into the program stream, wherein the timing reference information is provided according to the time information and the program clock reference information. The processing unit processes the program stream to generate a data stream incorporated with the timing reference information. The parser extracts the timing reference information from the data stream. And, the compensator generates a control signal according to the timing reference information. Wherein the clock generator receives the control signal and adjusts the clock signal. 1. A multimedia processing system for processing a program stream wherein the program stream comprising a program clock reference information , the system comprising:a clock generator for generating a clock signal;a timer receiving the clock signal for generating a time information;a modifier for incorporating a timing reference information into the program stream, wherein the timing reference information is provided according to the time information and the program clock reference information;a processing unit for processing the program stream to generate a data stream incorporated with the timing reference information;a flow controller, coupled to the processing unit and the timer, for buffering the data stream, wherein the flow controller outputs the buffered data stream when the time information reaches a time point having a fixed latency in relation to the timing reference informationa parser for extracting the timing reference information from the data stream;a compensator for generating a control signal according to the timing reference ...

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12-01-2012 дата публикации

FIFO SYSTEM AND OPERATING METHOD THEREOF

Номер: US20120011289A1
Автор: Wu Jin Xiao
Принадлежит: MEDIATEK INC.

FIFO systems and operating method thereof are provided to transfer data between a first device and a second device. In the FIFO system, a memory controller serves as an interface to access a memory device for storage of the data, and a CPU processes instructions to control the data transfer. Two data FIFOs serve as data buffers for data transactions to and from the first and second devices, and two status FIFOs serve as an instruction buffers for status transactions between the first, second devices and the CPU. A data controller connects the memory controller and the two data FIFOs for direct data delivery therebetween. 1. A First-in-First-Out (FIFO) system , for transferring data between a first device and a second device , wherein the FIFO system is coupled between the first and second devices and a memory device , comprising:a CPU, executing status instructions to control data transfer between the first and second devices;a first status FIFO, coupled to the first device and the CPU, serving as an instruction buffer for buffering status instructions transferred between the first device and the CPU;a second status FIFO, coupled to the second device and the CPU, serving as an instruction buffer for buffering status instructions transferred between the second device and the CPU;a data FIFO, serving as a data buffer for buffering data instructions transferred between the first and second devices; anda FIFO controller, establishing a bidirectional data path between the first and second devices through the data FIFO;wherein the bidirectional data path is a direct data path that does not occupy the memory device.2. The FIFO system as claimed in claim 1 , wherein the FIFO controller comprises:a first selector, coupled to the first status FIFO and the data FIFO, selectively forwarding output therefrom to the first device;a second selector, coupled to the second status FIFO and the data FIFO, selectively forwarding output therefrom to the second device; anda third selector ...

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19-01-2012 дата публикации

Temperature Measurement Devices

Номер: US20120016610A1
Автор: Lan Kuo-Jung
Принадлежит: MEDIATEK INC.

A temperature measurement device is provided to measure an environment temperature and includes a thermistor, a resistor, a determination circuit, and a measurement circuit. The thermistor is coupled to a first node. The thermistor has a specific impedance value at a specific environment temperature point. The resistor has a first terminal coupled to the first node. The determination circuit determines a real impedance value of the resistor. The measurement circuit is coupled to the first node for receiving a measurement value signal generated at the first node and obtains a value of the specific environment temperature point according to the measurement value signal and the real impedance value of the resistor. 1. A temperature measurement device for measuring an environment temperature comprising:a thermistor, coupled to a first node, having a specific impedance value at a specific environment temperature point;a resistor, having a first terminal coupled to the first node;a determination circuit for determining a real impedance value of the resistor; anda measurement circuit, coupled to the first node, for receiving a measurement value signal generated at the first node and obtaining a value of the specific environment temperature point according to the measurement value signal and the real impedance value of the resistor.2. The temperature measurement device as claimed in claim 1 , wherein the resistor has a theoretical impedance value claim 1 , and the measurement circuit obtains the value of the specific environment temperature point according to the measurement value signal claim 1 , the real impedance value and the theoretical impedance value of the resistor.3. The temperature measurement device as claimed in claim 1 , wherein the resistor has a theoretical impedance value and further has a second terminal coupled to a voltage source claim 1 , and the measurement circuit comprises a calculation unit for calculating the value of the specific environment ...

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26-01-2012 дата публикации

PRE-SOLDER METHOD AND REWORK METHOD FOR MULTI-ROW QFN CHIP

Номер: US20120018498A1
Автор:
Принадлежит: MEDIATEK (SHENZHEN) INC.

A pre-solder method for a multi-row quad flat no-lead (QFN) packaged chip is provided. Solder paste is applied on at least one pad of the multi-row QFN packaged chip. The multi-row QFN packaged chip is heated, such that the solder paste on the at least one pad of the multi-row QFN packaged chip becomes solid solder before the multi-row QFN packaged chip is mounted on a substrate. 1. A pre-solder method for a multi-row quad flat no-lead (QFN) packaged chip , comprising:applying solder paste on at least one pad of the multi-row QFN packaged chip; andheating the multi-row QFN packaged chip, such that the solder paste on the at least one pad of the multi-row QFN packaged chip becomes solid solder before the multi-row QFN packaged chip is mounted on a substrate.2. The pre-solder method as claimed in claim 1 , further comprising:de-absorbing the multi-row QFN packaged chip; andcleaning the multi-row QFN packaged chip to remove residue on the at least one pad of the multi-row QFN packaged chip before applying the solder paste on the at least one pad of the multi-row QFN packaged chip.3. The pre-solder method as claimed in claim 1 , further comprising:mounting the multi-row QFN packaged chip with the solid solder on the substrate.4. The pre-solder method as claimed in claim 3 , wherein the multi-row QFN packaged chip is mounted on pads of the substrate by heating the multi-row QFN packaged chip.5. The pre-solder method as claimed in claim 1 , wherein the step of applying the solder paste on the at least one pad of the multi-row QFN packaged chip further comprises:placing the multi-row QFN packaged chip in a carrier; andapplying the solder paste on the at least one pad of the multi-row QFN packaged chip by a screen printer.6. The pre-solder method as claimed in claim 5 , wherein the step of heating the multi-row QFN packaged chip further comprises:heating both the multi-row QFN packaged chip and the carrier in a reflow oven with a predetermined temperature, wherein the ...

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26-01-2012 дата публикации

RADIO FREQUENCY SIGNAL PROCESSING CIRCUIT AND QUADRATURE POWER AMPLIFIER

Номер: US20120021697A1
Автор: Yang Wen-Wei
Принадлежит: MEDIATEK INC.

A quadrature power amplifier capable of operating in a single-output mode and a multiple-output mode. When operating in the single-output mode, a first quadrature coupler receives a first input signal, and splits and phase-shifts the first input signal into two first split signals. A first power amplifier receives and amplifies one of the two first split signals to generate a first amplified signal. The second power amplifier receives and amplifies the other one of the two first split signals to generate a second amplified signal. The second quadrature coupler receives the first amplified signal and the second amplified signal, and phase-shifts and combines the first amplified signal and the second amplified signal into a first output signal. 1. A quadrature power amplifier , capable of operating in a single-output mode and a multiple-output mode , comprising:a first quadrature coupler, when operating in the single-output mode, receiving a first input signal, splitting and phase-shifting the first input signal into two first split signals, which are phase-shifted substantially 90 degrees from each other;a first power amplifier, coupled to the first quadrature coupler for receiving and amplifying one of the two first split signals to generate a first amplified signal;a second power amplifier, coupled to the first quadrature coupler for receiving and amplifying the other one of the two first split signals to generate a second amplified signal; anda second quadrature coupler, receiving the first amplified signal and the second amplified signal, and phase-shifting and combining the first amplified signal and the second amplified signal into a first output signal.2. The quadrature power amplifier as claimed in claim 1 , wherein when operating in the multiple-output mode claim 1 ,the first quadrature coupler further receives a second input signal, and splits and phase-shifts the second input signal into two second split signals, which are phase-shifted substantially 90 ...

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26-01-2012 дата публикации

Intelligent transmission antenna selection method and communications apparatus utilizing the same

Номер: US20120021702A1
Автор: Shun-An Yang, Yi-Chang Liu
Принадлежит: MediaTek Inc

A communications apparatus. Multiple antennas are arranged to receive downlink signals and transmit uplink signals. A transceiver module is arranged to receive the downlink signals from the antennas and pass the uplink signals to an antenna selection device. The antenna selection device is coupled between the antennas and the transceiver module and arranged to receive the uplink signals to be transmitted from the transceiver module and dynamically pass the uplink signals to one of the antennas according to an antenna selection signal. A processor is arranged to receive the downlink signals from the transceiver module, calculate short-term signal qualities of the downlink signals and generate the antenna selection signal according to the short-term signal qualities.

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26-01-2012 дата публикации

Apparatuses and Methods for Generating Full Screen Effect by Widgets

Номер: US20120023424A1
Принадлежит: MEDIATEK INC.

An electronic interaction apparatus with a touch screen coupled thereto is provided. In the electronic interaction apparatus, a processing unit executes a widget, and the widget generates a widget image and at least one display object. Also, the widget displays the widget image in a frame on the touch screen, and displays the display object outside of the frame. 1. An electronic interaction apparatus , comprising:a touch screen;a processing unit executing a widget,wherein the widget generates a widget image and at least one display object, displays the widget image in a frame on the touch screen, and displays the display object outside of the frame.2. The electronic interaction apparatus of claim 1 , wherein the widget further starts a timer claim 1 , modifies of an operating status of the display object claim 1 , and displays the display object according to the modified operating status when the timer expires.3. The electronic interaction apparatus of claim 1 , wherein the operating status of the display object comprises information concerning a position claim 1 , and a transparency or an opacity of the display object.4. The electronic interaction apparatus of claim 3 , wherein the widget further removes the display object when the updated position of the display object is outside of a display area on the touch screen.5. The electronic interaction apparatus of claim 3 , wherein the widget further adjusts the updated position of the display object to be within the touch screen when the updated position of the display object is out of a display area on the touch screen.6. The electronic interaction apparatus of claim 1 , wherein the image acts as a graphical user interface to interact with a user.7. An electronic interaction apparatus claim 1 , comprising:a touch screen;a processing unit,wherein a widget, when enabled and executed by the processing unit, updates a setting of a theme image on the touch screen and displays the theme image according to the updated ...

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26-01-2012 дата публикации

Apparatuses and Methods for Position Adjustment of Widget Presentations

Номер: US20120023426A1
Принадлежит: MEDIATEK INC.

An electronic interaction apparatus for position adjustment of widget presentations is provided. In the electronic interaction apparatus, a touch screen comprising a first area and a second area is coupled thereto. A processing unit determines that an image of a widget is dragged and dropped within the second area. Also, the processing unit adjusts the dropped image back to the first area. 1. An electronic interaction apparatus , comprising:a touch screen comprising a first area and a second area;a processing unit determining that an image of a widget is dragged and dropped within the second area, and adjusting the dropped image back to the first area.2. The electronic interaction apparatus of claim 1 , wherein the processing unit obtains a center of the image when detecting a termination of a series of drag events for the widget claim 1 , and determines that the image of the widget is dragged and dropped within the second area when the center of the image is within the second area.3. The electronic interaction apparatus of claim 1 , wherein the processing unit obtains a predetermined part of the image when detecting a termination of a series of drag events for the widget claim 1 , and determines that the image of the widget is dragged and dropped within the second area when the predetermined part of the image is not fully within the first area.4. The electronic interaction apparatus of claim 1 , wherein the image of the widget acts as a visual appearance for the widget to interact with an user claim 1 , can be displayed within the first area and cannot be displayed within the second area.5. The electronic interaction apparatus of claim 1 , wherein the processing unit further calculates a target position within the first area and moves the dropped image toward the target position.6. The electronic interaction apparatus of claim 5 , wherein the image is dropped in a drop position claim 5 , and processing unit further calculates at least one intervening position ...

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02-02-2012 дата публикации

Apparatus and method for calibrating timing mismatch of edge rotator operating on multiple phases of oscillator

Номер: US20120025918A1
Принадлежит: MediaTek Inc

An exemplary calibration apparatus for calibrating timing mismatch of an edge rotator operating on multiple phases of an oscillator includes a capturing block arranged to capture phase error samples, and a calibrating block arranged to adjust timing of said edge rotator according to said phase error samples. An exemplary calibration method for calibrating timing mismatch of an edge rotator operating on multiple phases of an oscillator includes the following steps: capturing phase error samples, and adjusting timing of said edge rotator according to said phase error samples.

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09-02-2012 дата публикации

TRANSMITTER AND CONTROL METHOD FOR TRANSMITTING AND CALIBRATING A PHASE SIGNAL AND AN AMPLITUDE SIGNAL

Номер: US20120033719A1
Принадлежит: MEDIATEK INC.

A transmitter for transmitting and calibrating a phase signal and an amplitude signal. The transmitter comprises a phase modulation path, an amplitude modulation path, and a control unit. The phase modulation path transmits the phase signal. The amplitude modulation path transmits the amplitude signal. The control unit delays the signal on at least one of the phase modulation path and the amplitude modulation. 1. A transmitter for transmitting and calibrating a phase signal and an amplitude signal , comprising:a phase modulation path for transmitting the phase signal;an amplitude modulation path for transmitting the amplitude signal;a control unit delaying the signal on at least one of the phase modulation path and the amplitude modulation path;a calibration unit, wherein when the transmitter is in a calibration mode, the calibration unit is arranged to provide a calibration signal to the amplitude modulation path to serve as the amplitude signal; anda digital modulator, wherein when the transmitter is in a normal mode, the digital modulator is arranged to provide the phase signal and the amplitude signal to the phase modulation path and the amplitude modulation path, respectively.2. The transmitter as claimed in claim 1 , wherein when the transmitter is in the calibration mode claim 1 , the calibration unit is arranged to provide the calibration signal to the phase modulation path to serve as the phase signal.3. The transmitter as claimed in claim 1 , further comprising a combiner claim 1 , wherein in the normal mode claim 1 , the combiner combines the phase signal and the amplitude signal to generate a radio frequency (RF) signal.4. The transmitter as claimed in claim 1 , wherein the control unit comprises:a detection module generating an adjustment signal according to a difference between the phase signal and the amplitude signal transmitted in the calibration mode; anda delay module delaying the signal on at least one of the phase modulation path and the ...

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09-02-2012 дата публикации

METHOD FOR DYNAMICALLY ADJUSTING ONE OR MORE RF PARAMETERS AND COMMUNICATIONS APPARATUSE UTILIZING THE SAME

Номер: US20120033762A1
Автор:
Принадлежит: MEDIATEK INC.

A communications apparatus is provided. A radio frequency (RF) circuit is arranged to receive an RF signal from an antenna and process the RF signal according to one or more RF parameters to generate an intermediate signal. A signal processing unit is arranged to process the intermediate signal to generate a processed signal and generates signal processing information regarding requirements for processing the intermediate signal. An RF circuit controller is coupled to the RF circuit and the signal processing unit and arranged to dynamically adjust the RF parameters according to the signal processing information. 1. A communications apparatus , comprising:a radio frequency (RF) circuit, arranged to receive an RF signal from an antenna and process the RF signal according to one or more RF parameters to generate an intermediate signal;a signal processing unit, arranged to process the intermediate signal to generate a processed signal and generate signal processing information regarding requirements for processing the intermediate signal; andan RF circuit controller, coupled to the RF circuit and the signal processing unit and arranged to dynamically adjust the RF parameters according to the signal processing information.2. The communications apparatus as claimed in claim 1 , wherein the RF parameters comprise a current in the RF circuit.3. The communications apparatus as claimed in claim 1 , wherein the RF parameters comprise a bias voltage in the RF circuit.4. The communications apparatus as claimed in claim 1 , wherein the RF circuit comprises at least an amplifier for amplifying the RF signal and the RF parameters comprise a gain value adopted by the amplifier for amplifying the RF signal.5. The communications apparatus as claimed in claim 1 , wherein the signal processing information comprises a signal to noise ratio (SNR) requirement required for processing the intermediate signal.6. The communications apparatus as claimed in claim 1 , wherein the intermediate ...

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09-02-2012 дата публикации

METHOD FOR DYNAMICALLY ADJUSTING SIGNAL PROCESSING PARAMETERS FOR PROCESSING WANTED SIGNAL AND COMMUNICATIONS APPARATUS UTILIZING THE SAME

Номер: US20120034891A1
Автор:
Принадлежит: MEDIATEK INC.

A communications apparatus is provided. A signal processing device receives an RF signal comprising a wanted signal complying with a first wireless communications protocol from an air interface and processes the RF signal according to one or more signal processing parameter(s) to obtain the wanted signal. An interference detector analyzes one or more characteristic(s) of an interference signal of the wanted signal. The interference signal complies with a second wireless communications protocol different from the first wireless communication protocol. A coexistence optimization controller is coupled to the signal processing device and the interference detector, obtains information regarding the characteristic(s) of the interference signal from the interference detector and dynamically adjusts the signal processing parameter(s) according to the characteristic(s) of the interference signal. 1. A communications apparatus , comprising:a signal processing device, receiving a radio frequency (RF) signal comprising a wanted signal complying with a first wireless communications protocol from an air interface and processing the RF signal according to one or more signal processing parameter(s) to obtain the wanted signal;an interference detector, analyzing one or more characteristic(s) of an interference signal of the wanted signal, wherein the interference signal complies with a second wireless communications protocol different from the first wireless communication protocols; anda coexistence optimization controller, coupled to the signal processing device and the interference detector, obtaining information regarding the characteristic(s) of the interference signal from the interference detector and dynamically adjusting the signal processing parameter(s) according to the characteristic(s) of the interference signal.2. The communications apparatus as claimed in claim 1 , further comprising:a first wireless communications module, providing a first wireless communications ...

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09-02-2012 дата публикации

Apparatuses and Methods for Rearranging Menu Items

Номер: US20120036435A1
Автор:
Принадлежит: MEDIATEK INC.

An electronic interaction apparatus is provided with a processing unit. The processing unit detects a drag event on a touch screen to indicate a first position to which a menu item is moved, and determines whether the first position corresponds to a page indicator other than a currently highlighted page indicator. If so, the processing unit further configures the touch screen to display a plurality of first menu items corresponding to the page indicator. 1. An electronic interaction apparatus , comprising:a processing unit detecting a drag event on a touch screen to indicate a first position to which a menu item is moved, determining whether the first position corresponds to a page indicator other than a currently highlighted page indicator, and if so, configuring the touch screen to display a plurality of first menu items corresponding to the page indicator.2. The electronic interaction apparatus of claim 1 , wherein the first menu items are displayed to replace a plurality of second menu items.3. The electronic interaction apparatus of claim 2 , wherein the processing unit further configures the touch screen to display the moved menu item with the first menu items in response to a termination of the drag event.4. The electronic interaction apparatus of claim 3 , wherein the processing unit further configures the touch screen to insert the moved menu item into the first menu items when the termination of the drag event is detected on a second position between two of the first menu items claim 3 , or among three or more of the first menu items.5. The electronic interaction apparatus of claim 4 , wherein the processing unit further configures the touch screen to play a gliding animation to show the inserting of the moved menu item to the first menu items.6. The electronic interaction apparatus of claim 3 , wherein the processing unit further configures the touch screen to append the moved menu item to the end when the termination of the drag event is detected on a ...

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09-02-2012 дата публикации

Apparatuses and Methods for Arranging and Manipulating Menu Items

Номер: US20120036459A1
Автор: He Yan, Pei Cheng-Yu
Принадлежит: MEDIATEK INC.

An electronic interaction apparatus is provided with a processing unit. The processing unit configures a touch screen to display a first set of the menu items in a first row on the touch screen, and to display a second set of the menu items in a second row on the touch screen. Particularly, the first row is lower than the second row, and the menu items in the second set are smaller than the menu items in the first set. 1. An electronic interaction apparatus for arranging a plurality of menu items in a virtual 3D space , comprising:a processing unit configuring a touch screen to display a first set of the menu items in a first row on the touch screen, and to display a second set of the menu items in a second row on the touch screen,wherein the first row is lower than the second row, and the menu items in the second set are smaller than the menu items in the first set.2. The electronic interaction apparatus of claim 1 , wherein the processing unit further configures the touch screen to display the menu items with the same horizontal sequential order in the first row and the second row to be arranged in a vanishing line to a vanishing point.3. The electronic interaction apparatus of claim 1 , wherein the processing unit further detects a touch or approximation of an object on or near to one of the displayed menu items on the touch screen claim 1 , and launches an application corresponding to the touched or approximated menu item.4. The electronic interaction apparatus of claim 1 , wherein the processing unit further reduces the sizes of the menu items in the first and second sets claim 1 , and configures the touch screen to move the first set of the reduced menu items to the second row and the second set of the reduced menu items to a third row claim 1 , respectively claim 1 , in response to detecting an upward movement of a touch or approximation of an object on the touch screen claim 1 , and the second row is lower than the third row.5. The electronic interaction ...

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16-02-2012 дата публикации

Transmission Interface and System Using the Same

Номер: US20120038497A1
Автор:
Принадлежит: MEDIATEK INC.

A transmission interface includes a first pin, a second pin, a conversion unit, and a decoding unit. The conversion unit receives a serial input data stream via the first pin and receives a serial clock via the second pin. The conversion unit converts the serial input data stream to parallel input data and converts the serial clock to a parallel clock. The serial input data stream has a full swing form. The decoding unit receives and decodes the parallel input data and generates an input data signal according to the decoded parallel input data. 111. () A transmission interface () comprising:{'b': 1', '2, 'a first pin (P) and a second pin (P);'}{'b': 110', '1', '2', '110', '110, 'a conversion unit () for receiving a first serial input data stream (SD) via the first pin (P), receiving a serial clock (SC) via the second pin (P), converting the first serial input data stream (SD) to parallel input data (PD), and converting the serial clock (SC) to a parallel clock (PC), wherein the first serial input data stream has a full swing form; and'}{'b': 111', '110, 'a decoding unit () for receiving and decoding the parallel input data (PD) and generating an input data signal (DATA) according to the decoded parallel input data'}2. () The transmission interface as claimed in claim 1 , wherein the conversion unit further receives a serial synchronization data stream (SSYNC) claim 1 , which has the full swing form and is merged with the first serial input data stream claim 1 , via the first pin and converts the serial synchronization data stream to parallel synchronization data (PSYNC).3111111. The transmission interface as claimed in claim 2 , wherein the decoding unit further receives and decodes the parallel synchronization data (PSYNC) and generates a first synchronization signal (VSYNC) and a second synchronization signal (HSYNC) according to the decoded parallel synchronization data and the parallel clock.4. The transmission interface as claimed in claim 1 , wherein the ...

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16-02-2012 дата публикации

Portable Electronic Device

Номер: US20120038516A1
Автор:
Принадлежит: MEDIATEK INC.

A portable electronic device is provided. The portable electronic device includes a housing, a circuit board, an amplifier, an antenna and a short element. The circuit board is disposed in the housing, wherein the circuit board includes a first edge and a second edge, and the first edge is opposite to the second edge. The amplifier is disposed on the circuit board and adjacent to the first edge. The antenna is disposed on the second edge of the circuit board, wherein the antenna transmits a wireless signal. The short element is disposed on the second edge of the circuit board, wherein the short element is separated from the antenna, and the short element couples with the antenna to reduce Specific Absorption Rate (SAR) value around the amplifier. 1. A portable electronic device , comprising:a housing;a first circuit board, disposed in the housing, wherein the first circuit board comprises a first edge and a second edge, and the first edge is opposite to the second edge;an amplifier, disposed on the first circuit board and adjacent to the first edge;a second circuit board, disposed in the housing, wherein the second circuit board comprises a third edge and a fourth edge, the third edge is opposite to the fourth edge, and the fourth edge is distant from the first edge;an antenna, disposed on the fourth edge of the second circuit board, wherein the antenna transmits a wireless signal; anda short element, disposed on the fourth edge of the second circuit board, wherein the short element is separated from the antenna, and the short element couples with the antenna to reduce Specific Absorption Rate (SAR) value around the amplifier.2. The portable electronic device as claimed in claim 1 , wherein the short element comprises a first section and a second section claim 1 , the first section is perpendicular to the second section claim 1 , and the first section is connected to the fourth edge and perpendicular thereto.3. The portable electronic device as claimed in claim 2 , ...

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16-02-2012 дата публикации

CODING UNIT SYNCHRONOUS ADAPTIVE LOOP FILTER FLAGS

Номер: US20120039383A1
Автор:
Принадлежит: MEDIATEK INC.

An apparatus and method for coding unit-synchronous adaptive loop filtering (ALF) for an image area that is partitioned into a plurality of coding units are disclosed. In a conventional approach, the slice-level bitstream cannot be generated until all coding units in a slice are processed since the ALF filter coefficients are determined based on reconstructed pixels and original pixels of a slice. According to one embodiment, the method processes the coding units in the image area one after the other to generate a CU-level bitstream. The method also reconstructs the coding units to from reconstructed coding units which are subject to adaptive loop filtering. Upon the availability of reconstructed coding units for the image area, the method derives filter coefficients for the ALF filter based on the reconstructed pixels and original pixels in the image area. The designed ALF filter is then tested for each coding unit to determine whether the ALF filter should be applied to the coding unit and the decision is indicated by an ALF flag. After all ALF flags are determined, an image area header is created by incorporating the filter coefficients and ALF flags in the header. The header and the CU-level data previously created are combined into an image area level bitstream. An apparatus to perform the steps recited in the method is also disclosed. 1. A method for coding unit-synchronous adaptive loop filtering (ALF) for an image area that is partitioned into a plurality of coding units , the method comprising:processing each of the coding units to generate a CU-level bitstream;reconstructing said each of the coding units;deriving filter coefficients for an ALF filter based on original pixels and reconstructed pixels of the image area;determining ALF flags for the plurality of coding units using the ALF filter;applying the ALF filter to the plurality of coding units according to the ALF flags; andgenerating image area header, wherein the image area header comprises the ...

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23-02-2012 дата публикации

Sounding mechanism and configuration under carrier aggregation

Номер: US20120044906A1
Принадлежит: MediaTek Inc

A method of multi-set RRC signaling for ap-SRS configuration is provided to enhance ap-SRS flexibility. An eNB transmits a plurality of sets of UE-specific SRS parameters to a UE via upper layer messaging in a multi-carrier wireless communication system. The eNB also determines triggering information of a selected set of UE-specific SRS parameters and an indicated carrier for the UE. The eNB then transmits an uplink or downlink grant over a primary carrier, the grant comprises triggering information for the UE to send an ap-SRS over the indicated carrier using the selected set of UE-specific SRS parameters. In one embodiment of joint signaling, the plurality of sets of UE-specific SRS parameters are signaled together in a single RRC transmission. In another embodiment of separate signaling, each set of UE-specific SRS parameters is signaled independently.

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01-03-2012 дата публикации

METHOD OF USB DEVICE ENUMERATION INCLUDING DETECTING THE OPERATING SYSTEM TYPE OF THE USB HOST

Номер: US20120054372A1
Принадлежит: MEDIATEK INC.

A USB device enumeration process implemented in a USB device is described. The USB device first detects a type of the operating system (OS) of the USB host connected to the device, and performs device enumeration using a process selected from multiple stored processes based on the detected host OS type. To detect the host OS type, the USB device first presents itself to the host as a USB MSD or HID, performs device enumeration to collect OS behavior factors from the host, and determines the OS type from the OS behavior factors. Thereafter, the USB device performs actual device enumeration by presenting itself as the USB device it actually is, using an enumeration process specific to the detected host OS type. The multiple stored enumeration processes are customer configurable. Further, a method is provided to stop an enumeration process when the host is in a BIOS stage. 1. A USB device enumeration method implemented in a USB device , comprising:(a) determining a type of operating system (OS) of a USB host connected to the USB device; and(b) performing USB device enumeration with the USB host using a USB device enumeration process selected from a plurality of USB device enumeration processes stored in the USB device based on the determined type of OS of the USB host.2. The method of claim 1 , wherein step (a) includes:(a1) presenting the USB device to the USB host as a commonly supported USB device;(a2) collecting host OS behavior factors from messages received from the USB host; and(a3) determining the type of OS of the USB host based on the collected host OS behavior factors.3. The method of claim 2 , wherein the commonly supported USB device is a USB Mass Storage Device or a USB Human Interface Device.4. The method of claim 2 , wherein the host OS behavior factors include one or more factors selected from a group consisting of: Microsoft OS Descriptor related messages claim 2 , wLength of a first Get Configuration Descriptor message claim 2 , wLength of a second ...

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08-03-2012 дата публикации

Communication Apparatuses and Wireless Communications Modules

Номер: US20120057624A1
Автор: Lo Chi-Yeh
Принадлежит: MEDIATEK INC.

A communication apparatus having a first and second wireless communications modules is provided. The first wireless communications module includes a receiving unit receiving RF signals from an air interface, a signal processing module performing frequency down conversion on the RF signals to generate baseband signals according to a clock signal, and a processor processing the baseband signals. The processor further detects an ON/OFF status of the second wireless communications module to obtain a detection result and compensates for frequency drift of the clock signal according to the detection result. 1. A communications apparatus , comprising: a receiving unit, arranged to receive RF signals from an air interface;', 'a signal processing module, arranged to perform frequency down conversion on the RF signals to generate baseband signals according to a clock signal; and', 'a processor, arranged to process the baseband signals; and, 'a first wireless communications module, arranged to provide a first wireless communications service and comprisinga second wireless communications module, arranged to provide a second wireless communications service,wherein the processor further detects an ON/OFF status of the second wireless communications module to obtain a detection result, and compensates for frequency drift of the clock signal according to the detection result.2. The communication apparatus as claimed in claim 1 , wherein the second wireless communications module transmits an enable signal to the processor to indicate whether the second wireless communications module is turned on or off claim 1 , and the processor generates at least one indication signal to indicate the ON/OFF status of the second wireless communications module according to the enable signal and compensates for the frequency drift of the clock signal according to the at least one indication signal.3. The communication apparatus as claimed in claim 2 , wherein the first wireless communications module ...

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15-03-2012 дата публикации

Injection-locked phase-locked loop with a self-aligned injection window

Номер: US20120062293A1
Принадлежит: MediaTek Inc

An injection-locked phase-locked loop (ILPLL) with a self-aligned injection window is disclosed. In the ILPLL, a phase detector is provided to detect a phase difference between a pair of differential terminals of an injection-locked voltage-controlled oscillator (ILVCO) of the ILPLL. According to the detection, the phase detector generates a control signal, to align an oscillation output, generated from the pair of differential terminals of the ILVCO, with an injection pulse utilized in the ILVCO.

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15-03-2012 дата публикации

Dynamic Polarity Control Method and Polarity Control Circuit for Driving LCD

Номер: US20120062610A1
Принадлежит: MEDIATEK INC.

A dynamic polarity control method for driving an LCD is provided. Gray level information is obtained, which indicates gray levels of dots in an image to be displayed. The gray level information is applied to each of a plurality of polarity patterns to obtain a plurality of combined patterns, wherein each of the polarity patterns has an individual polarity distribution. The gray levels of each of the combined patterns are summed up. A final pattern is selected from the plurality of polarity patterns according to the summed results, to drive the LCD for displaying the image. 1. A dynamic polarity control method for driving a liquid crystal display (LCD) , comprising:obtaining gray level information which indicates gray levels of dots in an image to be displayed;applying the gray level information to each of a plurality of polarity patterns to obtain a plurality of combined patterns, wherein each of the polarity patterns has an individual polarity distribution;summing up the gray levels of each of the combined patterns; andselecting a final pattern from the plurality of polarity patterns according to the summed results, to drive the LCD for displaying the image.2. The dynamic polarity control method as claimed in claim 1 , wherein the final pattern corresponds to a combined pattern having a minimum summed result among the plurality of combined patterns.3. The dynamic polarity control method as claimed in claim 1 , wherein the step of selecting the final pattern from the plurality of polarity patterns further comprises:setting a threshold value; andselecting the final pattern from the plurality of polarity patterns according to a specific rule when more than one summed result has an absolute value smaller than the threshold value.4. The dynamic polarity control method as claimed in claim 3 , wherein the final pattern is selected according to a previous final pattern.6. The dynamic polarity control method as claimed in claim 1 , wherein the amount of the dots with a ...

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15-03-2012 дата публикации

Method for performing hybrid multihypothesis prediction during video coding of a coding unit, and associated apparatus

Номер: US20120063514A1
Принадлежит: MediaTek Inc

A method for performing hybrid multihypothesis prediction during video coding of a coding unit includes: processing a plurality of sub-coding units in the coding unit; and performing motion vector derivation of a portion of the sub-coding units. More particularly, the step of performing motion vector derivation of the portion of the sub-coding units further includes: deriving a plurality of motion vectors for multihypothesis motion-compensated prediction of a specific sub-coding unit of the portion of the sub-coding units from at least one other sub-coding/coding unit or by performing motion estimation. The method further includes performing multihypothesis motion-compensated prediction on the specific sub-coding unit according to the plurality of motion vectors, and more particularly, includes utilizing a linear combination of a plurality of pixel values derived from the plurality of motion vectors as a predicted pixel value of the specific sub-coding unit. An associated apparatus is also provided.

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15-03-2012 дата публикации

Signal transmission system with clock signal generator configured for generating clock signal having stepwise/smooth frequency transition and related signal transmission method thereof

Номер: US20120063534A1
Принадлежит: MediaTek Inc

A signal transmission system includes a first clock signal generator and a second clock signal generator. The first clock signal generator is configured for generating a first clock signal according to clock information derived from a transmitted signal, wherein the transmitted signal is changed in response to a frequency change of a second clock signal, and the first clock signal generator enters a frequency-unlocked state if the second clock signal has a frequency transition from a first frequency to a second frequency during a first time period. The second clock signal generator is configured for generating the second clock signal having the frequency transition from the first frequency to the second frequency during a second time period longer than the first time period such that the first clock signal generator stays in a frequency-locked state during the second time period.

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22-03-2012 дата публикации

Method and Apparatus Providing Signal Metric for Transmitter

Номер: US20120069885A1
Принадлежит: MediaTek Inc

The present invention provides a method and associated apparatus providing a signal metric for a transmitter of a communication system. While the transmitter transmitting a signal with amplitudes scaled by scaling combinations selected from a plurality of scaling combination alternatives, the method including: providing a plurality of power terms, each power term corresponding to one of the scaling combination alternatives; and calculating the signal metric according to the plurality of power terms.

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22-03-2012 дата публикации

Radio Frequency Signal Control Module and Radio Frequency Signal Controlling Method

Номер: US20120071108A1
Автор: Sung Da-Wei, Yang Wen-Wei
Принадлежит: MEDIATEK INC.

A radio frequency (RF) signal control module is provided. The RF signal control module includes a detection and control device detecting at least one radio coupling value in a transmission band according to a radio coupling signal and generating a control signal for controlling transmission power an RF signal to be transmitted according to the detected radio coupling value. 1. A radio frequency (RF) signal control module , comprising:a detection and control device, detecting at least one radio coupling value in a transmission band according to a radio coupling signal and generating a control signal for controlling transmission power of an RF signal to be transmitted according to the detected radio coupling value.2. The RF signal control module as claimed in claim 1 , further comprising:a radio coupling device, obtaining the radio coupling signal from a radio coupling path between a transmission antenna utilized for transmitting the RF signal and the radio coupling device.3. The RF signal control module as claimed in claim 2 , wherein the radio coupling device is an antenna.4. The RF signal control module as claimed in claim 2 , wherein the radio coupling device is a coupler.5. The RF signal control module as claimed in claim 1 , wherein the radio coupling value is power of the radio coupling signal.6. The RF signal control module as claimed in claim 1 , wherein the radio coupling value is a phase of the radio coupling signal.7. The RF signal control module as claimed in claim 1 , wherein the radio coupling value is an impedance of a transmission antenna utilized for transmitting the RF signal.8. The RF signal control module as claimed in claim 1 , wherein the radio coupling signal is a faded version of the RF signal.9. The RF signal control module as claimed in claim 1 , wherein the radio coupling signal is a reflected version of the RF signal.10. The RF signal control module as claimed in claim 1 , wherein the radio coupling value is detected by measuring an S ...

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22-03-2012 дата публикации

Optical disc recorder and buffer management method thereof

Номер: US20120072660A1
Принадлежит: MediaTek Inc

A buffer management method is provided. A host issues a read command requesting access for a read data block and a write command requesting recording of a write data block. A write buffer is dedicated to store the write data block. A read buffer is dedicated to store the read data block. The method comprises entering the optical disc recorder into a write loop. During the write loop, the optical disc recorder triggering a write command handling procedure in response to the write command; triggering a read command handling procedure in response to the read command; and triggering a pre-recording procedure to prepare the write data block in the write buffer for recording. Wherein contents between the write buffer and read buffer are exchangeable during the write handling procedure, the read handling procedure or the pre-recording procedure.

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29-03-2012 дата публикации

Letterbox margin processing method for identifying letterbox margins of target frame according to frame packing type corresponding to 3d video input and related letterbox margin processing apparatus thereof

Номер: US20120075417A1
Автор: Yung-Chang Chang
Принадлежит: MediaTek Inc

A letterbox margin processing method includes: receiving a three-dimensional (3D) video input; determining a frame packing type corresponding to the 3D video input; selecting a first image region from a target frame according to the determined frame packing type, wherein the target frame is derived from the 3D video input; and detecting letterbox margins within the first image region.

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05-04-2012 дата публикации

METHOD USING DIGITAL PHASE-LOCKED LOOP CIRCUIT INCLUDING A PHASE DELAY QUANTIZER

Номер: US20120081159A1
Автор: WU I-chang
Принадлежит: MEDIATEK INC.

A phase locked loop circuit and method for use, in accordance with an embodiment, implements a digital phase delay quantizer to replace the analog charge-pump and phase frequency detector in an analog PLL circuit. Therefore, the built-in loop filter can be a compact-sized, high order, high bandwidth, and high attenuation digital filter as well. The digital PLL circuit takes advantage of the deep sub-micron process technology which features high speed, high resolution, compact size, and low power. 1. A method comprising:providing a reference clock signal;providing filtered digital codes by a digital filter;receiving the filtered digital codes and providing an output signal;receiving the output signal and providing a frequency divided signal;quantizing a phase delay between the reference clock signal and the frequency divided signal without the use of oversampling; andproviding digital codes to the digital filter.2. The method of wherein the reference clock signal is provided by a crystal oscillator.3. The method of wherein the phase delay quantizer comprises a circular delay ring structure to minimize power consumption and physical size.4. The method of wherein the quantizing step comprises providing a plurality of interpolated delay stages to achieve a shorter delay time than a gate delay.5. The method of wherein the quantizing step includes providing a code subtractor to subtract codes generated by the reference clock signal and the frequency divided signal to quantize the delay time between edges of the signals.6. The method of wherein the quantizing step includes providing a ring counter to memorize the number of full rings that are running between buffer stages in the digital phase locked loop circuit. Under 35 U.S.C. 120, this application is a Divisional Application and claims priority to U.S. application Ser. No. 12/465,547, filed on May 13, 2009, which is incorporated herein by reference in its entirety.The present invention relates generally to phase locked ...

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05-04-2012 дата публикации

SYSTEMS AND METHODS FOR CHANNEL SCANNING

Номер: US20120081610A1
Принадлежит: MEDIATEK INC.

Methods for channel scanning are provided. An embodiment of a method for channel scanning comprises scan progress information stored when interrupting a channel scanning process. A carrier RF subsequent to the most recently processed carrier RF is locked onto with reference to the stored scan progress information when resuming the interrupted channel scanning process. Channel information of a program carried by the locked carrier RF is acquired. The acquired channel information of the program is stored in a channel table. 1. A channel scanning method , comprising:storing scan progress information when interrupting a channel scanning process;locking onto a carrier RF according to the most recently processed carrier RF with reference to the stored scan progress information when resuming the interrupted channel scanning process;acquiring channel information of a first channel carried by the locked carrier RF; andstoring the acquired channel information of the first channel in a channel table.2. The method as claimed in wherein the channel information of the first channel comprises a representative image or a series of representative video frames acquired from the locked carrier RF.3. The method as claimed in further comprising:acquiring a channel name of the first channel from a service description table (SDT) of a transport stream (TS) carried by the locked carrier RF;acquiring a packet identifier (PID) identifying a video, audio, teletext or subtitle elementary stream (ES) of the first channel from a program map table (PMT) carried by the locked carrier RF; andstoring the acquired channel name and PID identifying the video, audio, teletext or subtitle ES of the first channel in the channel table,wherein the service description table describes programs in a digital video broadcasting (DVB) system.4. The method as claimed in further comprising:acquiring a PID of the PMT from a program association table (PAT) of the TS carried by the locked carrier RF; andfiltering out ...

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05-04-2012 дата публикации

Method and Apparatus of Adaptive Loop Filtering

Номер: US20120082241A1
Принадлежит: MediaTek Inc

A method and apparatus for processing in-loop reconstructed video using an in-loop filter is disclosed. In the recent HEVC development, adaptive loop filtering (ALF) is being adopted to process in-loop reconstruction video data, where ALF can be selectively turned ON or OFF for each block in a frame or a slice. An advanced ALF is disclosed later that allows a choice of multiple filter sets that can be applied to the reconstructed video data adaptively. In the present disclosure, pixels of the in-loop reconstructed video data are divided into a plurality of to-be-filtered regions, and an in-loop filter from a filter set is determined for each to-be-filtered region based on a rate-distortion optimization procedure. According to one embodiment of the present invention, computation of cost function associated with the rate-distortion optimization procedure is related to correlation values associated with original video data and the in-loop reconstructed video data. Furthermore, the correlation values can be shared by the multiple candidate filters during the rate-distortion optimization procedure for said each to-be-filtered region. In another embodiment, the correlation values can be shared by multiple candidate to-be-filtered regions of an area of the in-loop reconstructed video data during the rate-distortion optimization procedure for the area of the in-loop reconstructed video data.

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05-04-2012 дата публикации

Method and Apparatus of Region-Based Adaptive Loop Filtering

Номер: US20120082244A1
Принадлежит: MEDIATEK INC.

In a block-based motion compensated system, coding noises may arise due to lossy operations. Adaptive loop filter (ALF) is a technique used to improve the quality. A pixel adaptive (PA) ALF method was developed that uses the Sum-modified Laplacian Measure (SLM) to classify pixels and applies a respective ALF filter to each pixel according to the SLM. While the PA ALF achieves better performance over a conventional single filter (SF) based ALF, the PA ALF causes higher complexity and consumes more power due to the high complexity and per-pixel filter switching. Accordingly region based ALF scheme is disclosed which allows adaptive filter selection on a region by region basis and does not require per-pixel filter switching. In one embodiment according to the present invention, a picture is divided into M×N regions. The region based ALF also allows region merging for the M×N regions to improve performance. In another aspect of the present invention, the optimal ALF design also takes into consideration of the system complexity by using rate-distortion-complexity optimization (RDCO). The RDCO technique is also applied to sample adaptive offset (SAO) design. 1. A method for processing of coded video using adaptive loop filter (ALF) , the method comprising:receiving reconstructed video data corresponding to coded video data from a processing unit;applying adaptive loop filtering to the reconstructed video data to generate filtered video data, wherein said applying adaptive loop filtering selects region based ALF or non-region based ALF according to a region adaptation flag; andproviding the filtered video data.2. The method of claim 1 , wherein the reconstructed video data is divided into M×N regions if the region based ALF is selected claim 1 , where M and N are integers.3. The method of claim 2 , wherein each of the M×N regions is assigned a group index according to a scanning pattern claim 2 , wherein 1-D merge syntax is used to indicate that a first region with a first ...

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19-04-2012 дата публикации

MULTI-CARRIER RECEIVER WITH DYNAMIC POWER ADJUSTMENT AND METHOD FOR DYNAMICALLY ADJUSTING THE POWER CONSUMPTION OF A MULTI-CARRIER RECEIVER

Номер: US20120093270A1
Автор: Lin Che-Li
Принадлежит: MEDIATEK INC.

A method for dynamically adjusting the power consumption of a multi-carrier receiver and a multi-carrier receiver with dynamically power adjustment. The method includes receiving a multi-carrier signal, wherein the multi-carrier signal comprises a plurality of sub-carriers. Channel characteristics of each sub-carrier are estimated according to the demodulated multi-carrier signal. ICI is estimated from the demodulated multi-carrier signal. A system performance is detected. The estimated ICI is subtracted when the ICI exceeds an ICI threshold and the system performance is less than a system performance threshold. The demodulated multi-carrier signal is then equalized is based on the estimated channel characteristics, and the system performance is updated according to the equalized multi-carrier signal. 1. A multi-carrier receiver with dynamic power adjustment , comprising:a demodulator receiving a multi-carrier signal, wherein the multi-carrier signal comprises a plurality of sub-carriers;a channel estimator estimating channel characteristics of each sub-carrier from the demodulated multi-carrier signal;an inter-carrier interference (ICI) detector estimating an ICI of ICI from the demodulated multi-carrier signal;a system performance detector detecting a system performance;an ICI canceller subtracting the estimated ICI included in the received multi-carrier signal from the demodulated multi-carrier signal;a determination circuit turning on the ICI canceller when the ICI exceeds an ICI threshold and the system performance is less than a system performance threshold; andan equalizer equalizing the demodulated multi-carrier signal based on the estimated channel characteristics.2. The multi-carrier receiver as claimed in claim 1 , wherein the determination circuit turns off the ICI canceller when the ICI is less than the ICI threshold and the system performance exceeds the system performance threshold.3. The multi-carrier receiver as claimed in further comprising a ...

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19-04-2012 дата публикации

Methods for handling apparatus originated communication requests and communication apparatuses utilizing the same

Номер: US20120094678A1
Принадлежит: MediaTek Inc

A communication apparatus is provided. A first subscriber identity card camps on a first cell belonging to a first wireless network via a radio transceiver module and stores first contact entries each having a destination address. A second subscriber identity card camps on a second cell belonging to a second wireless network via the radio transceiver module and stores second contact entries each having a destination address. A processor receives an apparatus originated communication request with a destination address, determines whether the received destination address is currently stored in one of the first contact entries of the first subscriber identity card or one of the second contact entries of the second subscriber identity card, and transmits the apparatus originated communication request to the cell that the determined subscriber identity card camps on to establish a wireless communication with a peer device associated with the received destination address.

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26-04-2012 дата публикации

VIDEO DECODING METHOD

Номер: US20120099654A1
Принадлежит: MEDIATEK INC.

Video decoding device is disclosed. The video decoding device comprises a demultiplexer, a first decoder and a controller. The demultiplexer receives a Transport Stream to recover video Packetized Elementary Stream (PES) to determine a presentation time stamp (PTS) and a decoding time stamp (DTS) in a PES header of the PES. The first decoder retrieves a video frame from the video PES to determine temporal reference of the video frame. The controller receives the PTS, the DTS, and the temporal reference to determine whether there is a missing video frame. 1. A video decoding method , comprising:recovering video Packetized Elementary Stream (PES) to determine a presentation time stamp (PTS) and a decoding time stamp (DTS) in a PES header of the PES;retrieving a video frame from the video PES to determine temporal reference of the video frame; anddetermining whether there is a missing video frame according to the PTS, the DTS, and the temporal reference.2. The video decoding method of claim 1 , further comprising:upon detection of the missing video frame, generating a replacement video frame to substitute for the missing video frame.3. The video decoding method of claim 2 , wherein the generation of the replacement video frame comprises assigning a closest decodable video frame in a display order to be the replacement video frame.4. The video decoding method of claim 2 , wherein the generation of the replacement video frame comprises generating a replacement video frame according to motion vectors of a decodable video frame and a temporal distance between the current video frame and the decodable video frame.5. The video decoding method of claim 4 , wherein when the missing video frame or undecodable video frame is a reference frame with a dependent B-frame claim 4 , the replacement video frame comprises only forward motion vectors claim 4 , the decodable video frame is a preceding non-reference frame in display order claim 4 , and the generation comprises ...

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26-04-2012 дата публикации

METHODS FOR HANDLING PACKET-SWITCHED DATA TRANSMISSIONS BY MOBILE STATION WITH SUBSCRIBER IDENTITY CARDS AND SYSTEMS UTILIZING THE SAME

Номер: US20120100843A1
Принадлежит: MEDIATEK INC.

A method for handling packet-switched data transmissions by a mobile station with a first subscriber identity card coupled to a first radio frequency (RF) module and a second subscriber identity card coupled to a second RF module, executed by an adapter of the mobile station, is provided. An uplink Internet protocol (IP) packet is received. Information regarding at least one of the received packet and hardware status of the mobile station is collected. One subscriber identity card is determined from the first and second subscriber identity cards according to the collected information. The received packet is transmitted to an IP network via the RF module corresponding to the determined subscriber identity card. 1. A system for handling packet-switched data transmission , accompanying with a first radio frequency (RF) module , a second RF module , a first socket , into which a first subscriber identity card can be inserted , wherein the first subscriber identity card , when being inserted , camps on a cell via the first RF module , and a second socket , into which a second subscriber identity card can be inserted , wherein the second subscriber identity card , when being inserted , camps on the same cell or a different cell via the second RF module , comprising:processor logic for clustering a plurality of requests each encapsulated in one or more uplink Internet Protocol (IP) packets into a first group and a second group;processor logic for setting a first IP address corresponding to the first subscriber identity card as a source address of each IP packet of the first group;processor logic for setting a second IP address corresponding to the second subscriber identity card as a source address of each IP packet of the second group; andprocessor logic for transmitting the uplink IP packets to an adaptor responsible for transforming IP packets into a plurality of blocks and directing the first RF module and the second RF module to transmit the transformed blocks.2. The ...

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03-05-2012 дата публикации

Method for manufacturing leadframe, packaging method for using the leadframe and semiconductor package product

Номер: US20120104588A1
Принадлежит: MediaTek Inc

A leadframe package includes a die pad with four unitary, outwardly extending slender bars; a plurality of leads arranged along periphery of the die pad; a separate pad segment separated from the die pad and isolated from the plurality of leads; a semiconductor die mounted on an upper side of the die pad, wherein the semiconductor die contains first bond pads wire-bonded to respective the plurality of leads and a second bond pad wire-bonded to the separate pad segment; and a molding compound encapsulating the semiconductor die, the upper side of the die pad, the first suspended pad segment and inner portions of the plurality of leads.

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03-05-2012 дата публикации

Method of MDT information logging and reporting

Номер: US20120106356A1
Принадлежит: MediaTek Inc

A method of MDT information logging and problem event reporting is provided. The method supports provisioning of reference events to enable correlation of system time and the problem occurrence. In one embodiment, a problem event report includes time information directly or indirectly related to a reference event. A method of handling battery condition is also provided. The method supports autonomously suspending or resuming OAM activities in MDT based on predefined battery condition. In one embodiment, a testable battery condition handling is designed for MDT logging.

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03-05-2012 дата публикации

Method and Apparatus of Slice Grouping for High Efficiency Video Coding

Номер: US20120106622A1
Принадлежит: MEDIATEK INC.

In the H.264/AVC standard, one of the new characteristics is the possibility of dividing an image in regions called slice groups. The use of slice groups provides various possible advantages such as prioritized transmission, error resilient transmission, and etc. The slice groups can be formed by flexible macroblock ordering (FMO), where each picture can be divided into slice groups in different scan patterns of the macroblocks. In the high efficiency video coding (HEVC) under development, a more flexible block structure, called coding unit (CU), is used as the unit to process video data. The picture is first divided into largest CUs (LCUs) and each LCU is adaptively split into smaller CUs using a quadtree until leaf CUs are reached. In the current HEVC development, there is neither slice nor slice group structure being considered. The LCU size used for HEVC is 16 times as large as the macroblock size used in the H.264/AVC standard. Therefore, it is very desirable to develop slice and slice group structure suited for HEVC to offer various benefits of error resilience, parallel processing, reduced line (row) buffer requirement, and etc. Accordingly, slice group types including raster scan type, vertical stripe type, regions of interest type and full flexibility type are developed for HEVC. Furthermore, various syntax elements are incorporated in the sequence header or the picture header to convey information associated with the slice group structure. 1. A method for coding of video pictures , wherein each of the video pictures is divided into a plurality of LCUs (largest coding units) , the method comprising:partitioning each of the video pictures into two or more slice groups according to a slice group type, wherein each of said two or more slice groups comprises one or more member LCUs of the plurality of LCUs and said wherein said each of said two or more slice groups is divided into one or more slices;processing said each of said two or more slice groups to ...

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03-05-2012 дата публикации

Method and Apparatus of Slice Boundary Filtering for High Efficiency Video Coding

Номер: US20120106624A1
Принадлежит: MediaTek Inc

An apparatus and method for video coding having intra-slice deblocking, intra-slice adaptive loop filter, and intra-slice adaptive offset are disclosed. In a video coding system, a picture is often divided into slices and each slice is independently processed so that errors or missing data from one slice cannot propagate to any other slice within the picture. In the recent high efficiency video coding (HEVC) development, deblock filtering (DF), adaptive loop filter (ALF) and adaptive offset (AO) may be applied to reconstructed slices. When the processing is applied across slice boundaries, it may rely on pixels outside the current slice and cause dependency of the current slice on other slice(s). Consequently, the DF/ALF/AO processing on a reconstructed slice may have to wait until the reconstructed slices that it is dependent from complete the DF/ALF/AO processing. To overcome the slice boundary issue, intra-slice DF/ALF/AO is developed that does not rely on any pixel outside the currently slice. An optional slice boundary filter may be applied to slice boundaries after all slices are processed by the intra-slice DF/ALF/AO.

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03-05-2012 дата публикации

Apparatus and Method for High Efficiency Video Coding Using Flexible Slice Structure

Номер: US20120106652A1
Принадлежит: MEDIATEK INC.

An apparatus and method for video coding based on flexible slice structure are disclosed. In the recent high efficiency video coding (HEVC) development, the slice may contain multiple LCUs instead of macroblocks. The LCU size being considered is 64×64 pixels which is much larger than the macroblock size of 16×16 pixels. Compared with the macroblock aligned slice for H.264, the LCU-aligned slice for HEVC does not provide enough granularities for dividing video frames. Consequently, a flexible slice structure is developed where slice partition is based on smaller coding units. In the flexible slice structure, the first LCU and the last LCU of the slice are allowed to be a fractional LCU, which is derived from a whole LCU using quadtree partition. Syntax elements are also developed to enable conveyance of flexible slice structure between an encoder and a decoder efficiently. 1. A method for video coding , the method comprising:partitioning video input data into largest coding units (LCUs);configuring a slice to include a plurality of LCUs, having a first LCU and a last LCU; wherein the first LCU and the last LCU are selected from a group consisting of a fractional LCU and a whole LCU and wherein the fractional LCU is formed by partitioning the whole LCU into leaf CUs according to a quadtree;applying video coding to the slice to generate compressed video data for the slice;generating a slice layer bitstream comprising the compressed video data for the slice; andgenerating a video bitstream comprising the slice layer bitstream.2. The method of claim 1 , wherein the step of generating video bitstream further comprising a step of incorporating a first flag at a sequence level to indicate whether slice boundaries are LCU-aligned or non-LCU aligned.3. The method of claim 1 , wherein the step of generating video bitstream further comprising a step of incorporating a first flag at a sequence level to indicate whether an end_of_slice_flag is used for context-based adaptive ...

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10-05-2012 дата публикации

PRINTED CIRCUIT BOARD

Номер: US20120111623A1
Автор:
Принадлежит: MEDIATEK INC.

A printed circuit board is disclosed. The printed circuit board comprises a substrate having a top surface and a bottom surface. A ground plane is on the bottom surface. A signal trace is on the top surface along a first direction. At least two isolated power planes are on the top surface adjacent to opposite sides of the signal trace, respectively. A conductive connection along a second direction couples to the two power planes, across the signal trace without electrically connecting to the signal trace, wherein the signal trace doesn't pass over any split of the ground plane. 1. A printed circuit board , comprising:a substrate having a top surface and a bottom surface;a ground plane on the bottom surface;a first signal trace on the top surface along a first direction;a second signal trace divided into two segments on the top surface adjacent to opposite sides of the first signal trace, respectively; anda conductive connection along a second direction coupled to the two segments of the second signal trace, across the first signal trace without electrically connecting to the first signal trace, wherein the first signal trace doesn't directly pass over any split of the ground plane.2. The printed circuit board as claimed in claim 1 , wherein the first direction is not parallel to the second direction.3. The printed circuit board as claimed in claim 1 , wherein the conductive connection comprises surface mounted devices.4. The printed circuit board as claimed in claim 3 , wherein the surface mounted devices comprise wires claim 3 , 0 ohm resistors claim 3 , straps or jumpers.5. The printed circuit board as claimed in claim 4 , wherein the surface mounted devices are mounted in series or parallel. This application is a Divisional of co-pending application Ser. No. 12/098,474, filed on Apr. 7, 2008, the entire contents of which are hereby incorporated by reference.1. Field of the InventionThe present invention relates to a printed circuit board (PCB), and in particular ...

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10-05-2012 дата публикации

METHOD AND APPARATUS FOR ACCESSING DATA FROM DISC WITH LINKING AREA

Номер: US20120113780A1
Принадлежит: MEDIATEK INC.

An apparatus for accessing data from a disc with a linking area comprises a pick up head, a servo, a processing unit, a position predictor, and a control signal generator. The pick up head reads data from the disc and generates a read signal. The servo controls the pick up head. The processing unit processes the read signal and controls the servo according to a plurality of control signals. The position predictor tracks time position on the disc and generates position information. The control signal generator receives the position information and generates the control signals according to the position information. 1. An apparatus for accessing data from a disc with a linking area , comprising:a pick up head for reading data from the disc and generating a read signal;a servo for controlling the pick up head;a processing unit for processing the read signal and controlling the servo according to a plurality of control signals;a position predictor for tracking time position on the disc and generating position information; anda control signal generator for receiving the position information and generating the control signals according to the position information.2. The apparatus as claimed in claim 1 , wherein the processing unit comprises a signal processor for converting the read signal from the pick up head to a radio frequency (RF) signal claim 1 , and the control signal generator generates a first control signal for switching high pass or high/low bandwidth setting of the signal processor at a specific location of a recording unit by comparing the position information with a position defined in a signal process mode profile.3. The apparatus as claimed in claim 1 , wherein the processing unit comprises a phase locked loop (PLL) claim 1 , and the control signal generator generates a second control signal for switching hold/high gain mode of the PLL by comparing the position information with a position defined in a PLL mode profile.4. The apparatus as claimed in claim ...

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10-05-2012 дата публикации

Method and Apparatus of Delta Quantization Parameter Processing for High Efficiency Video Coding

Номер: US20120114034A1
Принадлежит: MediaTek Inc

In the current high efficiency video coding development, each LCU has its own quantization parameter (QP) and the difference between a current QP and a reference QP is transmitted instead of the QP value itself. Since the LCU is much larger than the macroblock of AVC/H.264, using one delta QP per LCU may cause rate control unable to adapt to the bitrate quickly enough. Consequently there is a need to adopt delta QP in units smaller than LCU to provide more granular rate control. Furthermore, it is desirable to develop a system that is capable of facilitating more flexible delta QP. Accordingly, adaptive quantization parameter processing is disclosed where a QP minimum CU size for incorporating or deriving a delta QP is indicated selectively in the slice level or in the sequence/picture level. In one variation, the delta QP is incorporated or derived only if nonzero quantized transform coefficients exist in a leaf CU that is larger than the QP minimum CU size. In another variation, quantization parameter information is only incorporated or derived when a leaf CU has any nonzero quantized transform coefficient. In yet another variation, a flag is used to indicate whether one delta QP per LCU is transmitted if the LCU has any nonzero quantized transform coefficient or one delta QP per leaf CU is transmitted if the leaf CU has any nonzero quantized transform coefficient.

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10-05-2012 дата публикации

COMMUNICATION APPARATUSES FOR HANDLING APPARATUS TERMINATED OR ORIGINATED COMMUNICATION REQUESTS WITH INCREASED COMMUNICATION CAPABILITY AND METHODS THEREOF

Номер: US20120115452A1
Принадлежит: MEDIATEK INC.

A communication apparatus has at least one radio transceiver module, a first subscriber identity card with a first address and a second subscriber identity card with a second address. The first subscriber identity card camps on a first cell belonging to a first wireless network via the radio transceiver module, and the second subscriber identity card camps on a second cell belonging to a second wireless network via the radio transceiver module. The communication apparatus includes first processor logic coupled to the radio transceiver module, the first subscriber identity card and the second subscriber identity card, receiving a communication request requesting for establishing wireless communication between the first subscriber identity card and a peer communication entity. 1: A communication apparatus having at least one radio transceiver module , a first subscriber identity card with a first address and a second subscriber identity card with a second address , wherein the first subscriber identity card camps on a first cell belonging to a first wireless network via the radio transceiver module , and the second subscriber identity card camps on a second cell belonging to a second wireless network via the radio transceiver module , the communication apparatus comprises:first processor logic coupled to the radio transceiver module, the first subscriber identity card and the second subscriber identity card, receiving a communication request requesting for establishing wireless communication between the first subscriber identity card and a peer communication entity; andsecond processor logic coupled to the radio transceiver module, the first subscriber identity card and the second subscriber identity card, activating a service instructing the second wireless network to transfer a future apparatus terminated communication request of the second subscriber identity card to the first subscriber identity card via the first cell.2: The communication apparatus as claimed in ...

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10-05-2012 дата публикации

Methods for integrating cell measurement procedures of a communication apparatus and communication apparatuses utilizing the same

Номер: US20120115486A1
Автор: Li-Chi Huang, Ming-Wan Hsu
Принадлежит: MediaTek Inc

A communication apparatus has at least one radio transceiver module, a first subscriber identity card and a second subscriber identity card, where the first subscriber identity card corresponds to a first public land mobile network (PLMN), and the second subscriber identity card corresponds to a second PLMN. The communication apparatus includes processor logic determining whether the first PLMN and the second PLMN are the same, and for suspending a measurement procedure and a cell reselection procedure of one of the first subscriber identity card and the second subscriber identity card to reduce battery power consumption. Processor logic further triggers an unsuspended measurement procedure to tune the radio transceiver module to a plurality of corresponding channel frequency/frequencies of the neighbor cells.

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10-05-2012 дата публикации

METHODS FOR INITIATING OPERATING VOLTAGES FOR SUBSCRIBER IDENTITY CARDS AND SYSTEMS UTILIZING THE SAME

Номер: US20120115546A1
Автор:
Принадлежит: MEDIATEK INC.

A system for operating at least two subscriber identity cards has a subscriber identity module (SIM) controller generating a first voltage variable signal with a first voltage level to a first subscriber identity card during a first time period, generating the first voltage variable signal at a second voltage level to the first subscriber identity card during a second time period, receiving a first code indicating that generated voltage matches from the first subscriber identity card during the first or second time period, generating a first operating voltage with the first voltage level to the first subscriber identity card when receiving the first code in the first time period, generating the first operating voltage with the second voltage level when receiving the first code in the second time period. 1. A system for operating at least two subscriber identity cards , comprising:a subscriber identity module (SIM) controller, after being power-on, generating a first voltage variable signal with a first voltage level to a first subscriber identity card during a first time period, generating the first voltage variable signal at a second voltage level to the first subscriber identity card during a second time period, receiving a first code indicating that generated voltage matches from the first subscriber identity card during the first or second time period, generating a first operating voltage with the first voltage level to the first subscriber identity card when receiving the first code in the first time period, generating the first operating voltage with the second voltage level when receiving the first code in the second time period, generating a second voltage variable signal with the first voltage level to a second subscriber identity card during a third time period, generating the second voltage variable signal with the second voltage level to the second subscriber identity card during a fourth time period, receiving a second code indicating that generated ...

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17-05-2012 дата публикации

METHODS FOR CONFIGURING CHANNEL STATE INFORMATION MEASUREMENT IN A COMMUNICATIONS SYSTEM AND COMMUNICATIONS APPARATUSES UTILIZING THE SAME

Номер: US20120120846A1
Автор:
Принадлежит: MEDIATEK INC.

A communications apparatus is provided. A controller determines two different sub-frame subsets for configuring a peer communications apparatus to perform channel state information measurement according to time-domain variation of a level of interference of the peer communications apparatus obtained from one or more previous measurement result(s). A transceiver transmits a configuration message carrying information regarding the two sub-frame subsets to the peer communications apparatus and receives one or more measurement result reporting message(s) carrying information regarding the measurement result(s) from the peer communications apparatus. 1. A communications apparatus , comprising:a controller, determining two different sub-frame subsets for configuring a peer communications apparatus to perform channel state information measurement according to time-domain variation of a level of interference of the peer communications apparatus obtained from one or more previous measurement result(s); anda transceiver, transmitting a configuration message carrying information regarding the two sub-frame subsets to the peer communications apparatus and receiving one or more measurement result reporting message(s) carrying information regarding the measurement result(s) from the peer communications apparatus.2. The communications apparatus as claimed in claim 1 , wherein the controller further determines relative location with respect to adjacent network node(s) of the peer communications apparatus according to the measurement result(s).3. The communications apparatus as claimed in claim 1 , wherein the controller determines the two sub-frame subsets further according to distribution(s) of one or more almost blank sub-frame(s) of one or more adjacent network node(s).4. A communications apparatus claim 1 , comprising:a controller, obtaining information regarding a first sub-frame subset and a second sub-frame subset, performing a first channel state information measurement at ...

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17-05-2012 дата публикации

Resynchronization Method for Recovering from Sleep Mode and Apparatuses Using the Same

Номер: US20120120993A1
Принадлежит: MEDIATEK INC.

A wireless communications device connected to a service network with a synchronized timing pattern therebetween is provided. In the wireless communications device, a wireless modem is configured to enable wireless signal transceiving from and to the service network in a non-sleep mode and disable wireless signal transceiving from and to the service network in a sleep mode. Also in the wireless communications device, a synchronization module is configured to initialize a first counter with a current time in the synchronized timing pattern in response to a first signal triggering the wireless modem to enter the sleep mode from the non-sleep mode, and enable counting of the first counter in a low-rate clock for the sleep mode. The synchronization module further provides the counted value of the first counter to the wireless modem to resynchronize with the service network in response to a second signal triggering the wireless modem to recover from the sleep mode to the non-sleep mode. 1. A wireless communications device connected to a service network with a synchronized timing pattern therebetween , comprising:a wireless modem configured to enable wireless signal transceiving from and to the service network in a non-sleep mode and disable wireless signal transceiving from and to the service network in a sleep mode; anda synchronization module configured to initialize a first counter with a current time in the synchronized timing pattern in response to a first signal triggering the wireless modem to enter the sleep mode from the non-sleep mode, enable counting of the first counter in a low-rate clock for the sleep mode, and provide the counted value of the first counter to the wireless modem to resynchronize with the service network in response to a second signal triggering the wireless modem to recover from the sleep mode to the non-sleep mode.2. The wireless communications device as claimed in claim 1 , wherein the current time in the synchronized timing pattern is ...

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17-05-2012 дата публикации

METHOD AND PROGRAM FOR SELECTIVE SUSPENSION OF USB NETWORK DEVICE

Номер: US20120124595A1
Принадлежит: MEDIATEK INC.

A method implemented in a computer system that includes a host computer having a non-transitory memory for storing a computer software program and a processor for executing the software program, wherein the program includes a program code configured to cause the host computer to execute a process for network devices coupled to the host computer to use a network device selective suspend feature of an operating system (OS) that does not allow a network device selective suspend feature on a specific network device driver, which process includes the steps of providing a first driver stack and a second driver stack in a kernel space of the OS, creating a virtual device for the specific network device driver in the first driver stack to interact with user applications in a user space of the OS, and providing a separate driver for a physical device in the second driver stack to interact with a network device coupled to the host computer, wherein the separate driver is not prohibited by the OS to use the network device selective suspend feature for selective suspension of the network device coupled to the host computer. 1. A method for network devices coupled to a host computer to use a network device selective suspend feature of an operating system (OS) that does not allow a network device selective suspend feature on a specific network device driver , comprising:providing a first driver stack and a second driver stack in a kernel space of the OS;creating a virtual device for the specific network device driver in the first driver stack to interact with user applications in a user space of the OS; andproviding a separate driver for a physical device in the second driver stack to interact with a network device coupled to the host computer;wherein the separate driver is not prohibited by the OS to use the network device selective suspend feature for selective suspension of the network device coupled to the host computer.2. The method of claim 1 , wherein the separate driver ...

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24-05-2012 дата публикации

Semiconductor Package

Номер: US20120126368A1
Автор:
Принадлежит: MEDIATEK INC.

The invention provides a semiconductor package. The semiconductor package includes a substrate. A first passivation layer is disposed on the substrate. An under bump metallurgy layer is disposed on the first passivation layer. A passive device is disposed on the under bump metallurgy layer 1. A semiconductor package , comprising:a substrate;a first passivation layer disposed on the substrate;an under bump metallurgy layer disposed on the first passivation layer; anda passive device disposed on the under bump metallurgy layer.2. The semiconductor package as claimed in claim 1 , wherein the passive device comprises an inductor claim 1 , a routing or an antenna.3. The semiconductor package as claimed in claim 1 , further comprises an interconnection structure between the substrate and the first passivation layer claim 1 , wherein the interconnection structure comprises a plurality of metal layers and a plurality of dielectric layers.4. The semiconductor package as claimed in claim 3 , wherein the interconnection structure comprises a metal pad formed by an uppermost metal layer of the metal layers of the interconnection structure.5. The semiconductor package as claimed in claim 4 , wherein the metal pad is exposed from a first opening of the first passivation layer.6. The semiconductor package as claimed in claim 4 , wherein the under bump metallurgy covers the metal pad exposed from the first opening claim 4 , extending over the first passivation layer.7. The semiconductor package as claimed in claim 4 , further comprises a second passivation layer between the substrate and the metal pad claim 4 , wherein the second passivation layer is formed by an uppermost dielectric layer of the dielectric layers of the interconnection structure.8. The semiconductor package as claimed in claim 1 , further comprises a solder covering the passive device.9. The semiconductor package as claimed in claim 4 , wherein the passive device has two terminals respectively connected to the ...

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24-05-2012 дата публикации

Method and Apparatus of Spatial Motion Vector Prediction

Номер: US20120128060A1
Принадлежит: MEDIATEK INC.

An apparatus and method for deriving a motion vector predictor or a motion vector predictor candidate or a motion vector or a motion vector candidate for a current block are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the information to be transmitted or stored. Motion Vector Prediction (MVP) has been used to further conserve the bitrate associated with motion vector coding. The MVP technique being developed for the current HEVC only considers the motion vector having the same reference list and the same reference picture index as the current block to be an available spatial motion vector predictor candidate. It is desirable to develop a MVP scheme that can improve the availability of the motion vector predictor candidate based on motion vectors from the spatially neighboring block. Accordingly, an apparatus and method for determining a motion vector predictor or motion vector predictor candidate or motion vector or motion vector candidate for a current block based on motion vectors associated with reference pictures in list and list of a neighboring block are disclosed. The improved MVP scheme may reduce motion vector residues and consequently the coding efficiency can be improved. Furthermore, the MVP scheme is based on a priority order so that the predictor can be derived at the decoder using decoded information without side information. 1. A method of deriving motion vector predictor or motion vector predictor candidate or motion vector or motion vector candidate for a current block in a picture based on motion vectors from a spatially neighboring block , the method comprising:receiving a first motion vector associated a first reference picture in a first reference picture list and a second motion vector associated with a second reference picture in a second reference picture list of the spatially neighboring block; anddetermining a MVP (motion vector predictor) or at least ...

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24-05-2012 дата публикации

Digital signal processing circuit for generating output signal according to non-overlapping clock signals and input bit streams and related wireless communication transmitters

Номер: US20120128092A1
Принадлежит: MediaTek Inc

A digital signal processing circuit includes a combining stage and an output stage. The combining stage is arranged to receive a plurality of non-overlapping clock signals having a same frequency but different phases, receive a plurality of first input bit streams, and generate a first output bit stream by combining the first input bit streams according to the non-overlapping clock signals. The output stage is arranged to generate an output according to the first output bit stream. A digital signal processing method includes: receiving a plurality of non-overlapping clock signals having a same frequency but different phases; receiving a plurality of first input bit streams; generating a first output bit stream by combining the first input bit streams according to the non-overlapping clock signals; and generating an output according to the first output bit stream.

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31-05-2012 дата публикации

Method and Apparatus of Extended Motion Vector Predictor

Номер: US20120134415A1
Автор:
Принадлежит: MEDIATEK INC.

A method and apparatus for determining a motion vector predictor (MVP) or a MVP candidate based on a MVP set are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the video data to be transmitted or stored. Motion vector prediction has been used to further conserve the bitrate associated with motion vector coding. Motion vector prediction technique being developed for the current high efficiency video coding (HEVC) only uses a MVP candidate set including spatial MVP candidates and a temporal candidate corresponding to the co-located block. In the current disclosure, the spatial and temporal motion vector predictor set is extended to include at least one spatially neighboring block associated with list 0 reference pictures and list 1 reference pictures, and co-located block and its neighboring block associated with list 0 reference pictures and list 1 reference pictures. 1. A method of deriving motion vector predictor or motion vector predictor candidate for a current PU (prediction unit) in a picture , the method comprising:receiving motion vectors associated with at least a spatially neighboring block of the current PU, at least a co-located block of the current PU and at least a neighboring block of a co-located PU; anddetermining a MVP (motion vector predictor) or a MVP candidate based on a MVP set, wherein the MVP set comprises motion vector candidates derived from the motion vectors associated with the spatially neighboring block, the co-located block and the neighboring block of the co-located PU.2. The method of claim 1 , wherein the motion vectors associated with the spatially neighboring block claim 1 , the co-located block and the neighboring block of the co-located PU are obtained from a previously coded frame or picture.3. The method of claim 1 , wherein each of the motion vectors associated with the spatially neighboring block claim 1 , the co-located block and the ...

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31-05-2012 дата публикации

Method and Apparatus for Derivation of MV/MVP Candidate for Inter/Skip/Merge Modes

Номер: US20120134416A1
Принадлежит: MEDIATEK INC.

A method and apparatus for deriving a temporal motion vector predictor (MVP) are disclosed. The MVP is derived for a current block of a current picture in Inter, or Merge, or Skip mode based on co-located reference blocks of a co-located block. The co-located reference blocks comprise an above-left reference block of the bottom-right neighboring block of the co-located block. The reference motion vectors associated with the co-located reference blocks are received and used to derive the temporal MVP. Various configurations of co-located reference blocks can be used to practice the present invention. If the MVP cannot be found based on the above-left reference block, search for the MVP can be continued based on other co-located reference blocks. When an MVP is found, the MVP is checked against the previously found MVP. If the MVP is the same as the previously found MVP, the search for MVP continues. 1. A method of deriving a motion vector predictor (MVP) for a motion vector (MV) of a current block of a current picture in Inter , or Merge , or Skip mode , wherein the MV is associated with the current block and a corresponding block of a target reference picture in a given reference list , the method comprising:determining one or more co-located reference blocks, wherein said one or more co-located reference blocks comprise a first reference block of a bottom-right neighboring block of a co-located block;receiving one or more reference MVs (motion vectors) associated with said one or more co-located reference blocks;determining the MVP for the current block based on said one or more reference MVs; andproviding the MVP for the current block.2. The method of claim 1 , wherein said first reference block of the bottom-right neighboring block of the co-located block is an above-left reference block of the bottom-right neighboring block of the co-located block.3. The method of claim 1 , wherein said one or more co-located reference blocks further comprise an inside reference ...

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07-06-2012 дата публикации

PRINTED CIRCUIT BOARD (PCB) ASSEMBLY WITH ADVANCED QUAD FLAT NO-LEAD (A-QFN) PACKAGE

Номер: US20120140427A1
Автор:
Принадлежит: MEDIATEK INC.

A printed circuit board assembly (PCB) assembly is provided, including a printed circuit board (PCB) comprising a plurality of conductive pads and an advanced quad pack no-lead chip (a-QFN) package soldered to the printed circuit board. In one embodiment, the conductive pads have a first surface area and the QFN package includes a plurality of leads facing the conductive pads, having a second surface area, wherein a ratio between the second surface area and the first surface area is about 20% to 85% to ensure a physical connection between the PCB and the a-QFN package. 1. A printed circuit board assembly (PCBA) , comprising:a printed circuit board (PCB) comprising a plurality of conductive pads, wherein the conductive pads have a first surface area; andan advanced quad pack no-lead chip (a-QFN) package soldered to the printed circuit board, wherein the QFN package comprises a plurality of leads facing the conductive pads, having a second surface area, wherein a ratio between the second surface area and the first surface area is about 20% to 85% to ensure a physical connection between the PCB and the a-QFN package.2. The PCBA of claim 1 , wherein the ratio between the second surface area and the first surface area is about 50% to 80%.3. The PCBA of claim 1 , wherein the PCB is a solder mask defined type PCB and the first surface area of the conductive pads is a surface area thereof exposed by the solder mask.4. The PCBA of claim 1 , wherein the PCB is a non-solder mask defined type PCB.5. The PCBA of claim 1 , wherein the a-QFN package is soldered to the PCB by solder balls claim 1 , and the solder balls physically surround a bottom surface and sidewall surfaces of the leads of the a-QFN package.6. The PCBA of claim 1 , wherein the a-QFN package further comprises a chip and the chip is connected with the leads by bonding wires.7. The PCBA of claim 6 , wherein the a-QFN package further comprises a molding compound encapsulating the chip claim 6 , the bonding wires and ...

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07-06-2012 дата публикации

Method and Apparatus of Video Coding Using Picture Structure with Low-Delay Hierarchical B Group

Номер: US20120140825A1
Принадлежит: MEDIATEK INC.

A method and apparatus for encoding a video sequence comprising a plurality of pictures are disclosed. In video coding systems, the temporal redundancy is exploited using motion compensated prediction. The video sequence is often organized into multiple GOP (group of pictures) where different types of GOP may be used. In conventional coding systems, IPPP and IBBP GOP structure is often used. In H.264/AVC and the emerging High Efficiency Video Coding (HEVC), hierarchical GOP structure, including hierarchical P GOP structure and hierarchical B GOP structure, has been introduced to allow temporal scalability. Furthermore, low-delay IBBB GOP structure has been also introduced, for low-delay application. In the present invention, a low-delay hierarchical B GOP structure is disclosed. The new structure uses low-delay B-pictures only so as to minimize the processing delay while the hierarchical structure provides the temporal scalability. The low-delay hierarchical B GOP structure has been shown to result in substantial improvement in coding efficiency 1. A method of encoding a video sequence having a plurality of pictures , the method comprising:dividing the plurality of pictures into a set of group of pictures;dividing each group of pictures into at least two temporal layers with hierarchical structure; and{'b': 0', '1', '0', '1, 'encoding each picture in the group of pictures as an Intra coded picture (I-picture) or a low-delay Bi-predictive picture (B-picture), wherein the low-delay B-picture uses reference pictures from reference picture list and reference picture list , and the reference pictures from the reference picture list and the reference picture list contain only pictures prior to the low-delay B-picture in a display order;'}wherein the I-picture is only allowed in a lowest temporal layer;wherein at least one low-delay B-picture is used in a non-lowest temporal layer; andwherein a first picture in a first temporal layer does not reference to any picture in ...

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07-06-2012 дата публикации

Transaction Information Keeping Methods and Mobile Devices Thereto

Номер: US20120143702A1
Автор:
Принадлежит: MEDIATEK INC.

A mobile device for keeping transaction information at payer's side is provided with an information keeping module therein. The information keeping module is suitable for obtaining first transaction information from at least one of a payment device and a point of sale terminal. Particularly, the first transaction information corresponds to a transaction performed between the payment device and the point of sale terminal. 1. A mobile device for keeping transaction information at payer's side , comprising:an information keeping module, suitable for obtaining first transaction information from at least one of a payment device and a point of sale terminal, wherein the first transaction information corresponds to a transaction performed between the payment device and the point of sale terminal.2. The mobile device of claim 1 , further comprising a wireless module for providing wireless communication services claim 1 , wherein the first transaction information is obtained from the point of sale terminal via the wireless module.3. The mobile device of claim 1 , further comprising an accounting module claim 1 , coupled to the information keeping module claim 1 , for generating a first expenditure entry for the first transaction information according to a data format of an expense record.4. The mobile device of claim 3 , further comprising a storage module for storing the expense record.5. The mobile device of claim 3 , further comprising a wireless module for providing wireless communication services claim 3 , wherein the expense record is maintained in a remote information center claim 3 , and the first expenditure entry is stored into the expense record via the wireless module.6. The mobile device of claim 3 , wherein the information keeping module is further suitable for obtaining second transaction information from a service provider via a wireless module.7. The mobile device of claim 6 , wherein the accounting module further generates a second expenditure entry for the ...

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14-06-2012 дата публикации

EFUSE MACRO

Номер: US20120146664A1
Автор:
Принадлежит: MEDIATEK INC.

An eFuse with at least one fuse unit is provided. The fuse unit includes a first common node providing a first reference voltage, a second common node providing a second reference voltage, at least one fuse coupled to the first common node, and a determining unit coupled between the fuse and the second common node, generating an output signal indicating whether the fuse is blown or not according to a first condition in a normal mode and a second condition in a test mode. 1. An eFuse macro , comprising: a first common node providing a first reference voltage;', 'a second common node providing a second reference voltage;', 'at least one fuse coupled to the first common node; and', 'a determining unit coupled between the fuse and the second common node, generating an output signal indicating whether the fuse is blown or not according to a first condition in a normal mode and a second condition in a test mode., 'at least one fuse unit, comprising2. The eFuse macro as claimed in claim 1 , wherein the determining unit comprises:a first switch and a second switch, wherein the fuse is coupled between the first common node and the first switch;a first resistor unit and a second resistor unit coupled to the second common node, respectively, wherein the second resistor unit has a resistance higher than that of the first resistor unit, and the fuse is selectively coupled to the first resistor unit or the second resistor unit via the first switch; andan output unit having an input terminal selectively coupled to the first resistor unit or the second resistor unit via the second switch, and detecting a voltage received by the input terminal to generate the output signal indicating whether the fuse is blown or not according to the first condition in the normal mode and the second condition in the test mode,wherein the first condition indicates that the fuse and the output unit are coupled to the first resistor unit, and the second condition indicates the fuse and the output unit ...

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14-06-2012 дата публикации

METHOD FOR BOOSTING DOWNLINK TRANSMISSION TO MOBILE STATION AND SYSTEM UTILIZING THE SAME

Номер: US20120147840A1
Автор: Chen Yu-Cheng
Принадлежит: MEDIATEK INC.

The invention discloses a method for boosting the downlink transmission rate to a mobile station by a processing unit thereof, including the steps of predicting a total number of acknowledgement (ACK) packets that are going to be generated, wherein the predicted total number of the ACK packets is a fixed value, predicting timing for when the ACK packets will be generated, determining a bandwidth amount according to the predicted total number of the ACK packets, issuing a bandwidth amount request with the determined bandwidth amount from the mobile station to a base station for the ACK packets to be generated and transmitted to the base station before generation of the ACK packets, generating the ACK packets, and instructing an RF module to transmit the ACK packets to the base station following a notification from the base station indicating that the requested bandwidth amount has been allocated. 1. A method for boosting the downlink transmission rate to a mobile station by a media access control (MAC) unit thereof , comprising the steps of:predicting a total number of acknowledgement (ACK) packets that are going to be generated, wherein the predicted total number of the ACK packets is a fixed value;predicting timing for when the ACK packets will be generated;determining a bandwidth amount according to the predicted total number of the ACK packets;issuing a bandwidth amount request with the determined bandwidth amount from the mobile station to a base station for the ACK packets to be generated and transmitted to the base station before generation of the ACK packets;generating the ACK packets; andinstructing an RF module to transmit the ACK packets to the base station following a notification from the base station indicating that the requested bandwidth amount has been allocated.2. The method as claimed in claim 1 , wherein the fixed value is a multiple of 40.3. The method as claimed in claim 2 , wherein the fixed value is 400 or 4000.4. The method as claimed in ...

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14-06-2012 дата публикации

SYSTEM AND METHOD FOR OUTPUTTING VIDEO STREAMS

Номер: US20120147975A1
Автор: Ju Chi-Cheng
Принадлежит: MEDIATEK INC.

A structure outputting a decoded video stream includes a processing block and a range modification circuit. The processing block decodes an input stream to generate and store a decoded stream in a decoded picture buffer, wherein the decoded stream comprises a luminance component and a chrominance component a decoded stream. The range modification circuit receives the decoded stream, and modifies, if required, a luminance range of the luminance component and a chrominance range of the chrominance component. The range modification circuit further outputs a video stream. The video stream comprises the modified luminance component when the luminance modification signal is true, and the video stream comprises the luminance component when the luminance modification is false. Similarly, the video stream comprises the modified chrominance component when the chrominance modification signal is true, and the video stream comprises the chrominance component when the chrominance modification signal is false. 1. An apparatus for outputting a video stream , comprising:a processing block for decoding an input stream;a decoded picture buffer for storing the decoded input stream, wherein the decoded input stream comprises a luminance component and a chrominance component; anda range modification unit for retrieving the decoded input stream from the decoded picture buffer, wherein a luminance range of the luminance component of the decoded input stream is modified according to a luminance modification signal, and a chrominance range of the chrominance component of the decoded stream is modified according to a chrominance modification signal, andwherein the video stream is outputted according to an output of the range modification unit.2. The apparatus as claimed in claim 1 , wherein the luminance range of the luminance component of the decoded input stream is modified if the luminance modification signal is true claim 1 , and a chrominance range of the chrominance component of the ...

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21-06-2012 дата публикации

Push-pull low noise amplifier with variable gain, push-pull low noise amplifier with common gate bias circuit and amplifier with auxiliary matching

Номер: US20120154045A1
Автор: Ming-Da Tsai, Yu-Hsin Lin
Принадлежит: MediaTek Inc

A push-pull low noise amplifier (LNA) includes at least one amplifier block. Each amplifier block includes a bypass stage and at least one gain cell. The bypass stage has a first node and a second node. The gain cell has an input terminal and an output terminal, comprising a loading stage and a driving stage. When the push-pull LNA is in a first gain mode, the loading stage is enabled and the bypassing stage is disabled; and when the push-pull LNA is in a second gain mode, the loading stage is disabled and the bypassing stage is enabled.

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28-06-2012 дата публикации

Operational Amplifier

Номер: US20120161874A1
Принадлежит: MEDIATEK INC.

An operational amplifier comprises: a plurality of transistors, comprising: a first transistor; and a second transistor, wherein a source of the first transistor is connected to a source of the second transistor; wherein the first transistor and the second transistor have near zero threshold voltage. 1. An operational amplifier , comprising: a first transistor; and', 'a second transistor, wherein a source of the first transistor is connected to a source of the second transistor;, 'a plurality of transistors, comprisingwherein the first transistor and the second transistor have near zero threshold voltage.2. The operational amplifier as claimed in claim 1 , wherein the plurality of transistors further comprise a third transistor and a fourth transistor claim 1 ,a gate of the third transistor is connected to a gate of the fourth transistor, wherein at least one of the third transistor and the fourth transistor has its gate connected to its drain.3. The operational amplifier as claimed in claim 2 , wherein the third transistor and the fourth transistor have near zero threshold voltage.4. The operational amplifier as claimed in claim 1 , wherein at least one of the transistors has a source directly grounded or directly coupled to a high voltage source.5. The operational amplifier as claimed in claim 1 , wherein at least one of the transistors has a gate receiving a bias voltage.6. The operational amplifier as claimed in claim 1 , wherein a gate of the first transistor is a first input terminal of the operational amplifier and a gate of the second transistor is a second input terminal of the operational amplifier.7. The operational amplifier as claimed in claim 1 , wherein a gate of the first transistor receives a first voltage signal and a gate of the second transistor receives a second voltage signal.8. The operational amplifier as claimed in claim 7 , wherein the first voltage signal and the second voltage signal form a pair of differential signal.9. The operational ...

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28-06-2012 дата публикации

Antenna Unit

Номер: US20120162015A1
Автор: Chen Ho-Chung, Wang James
Принадлежит: MEDIATEK INC.

An antenna unit is provided. The antenna unit includes a first substrate, a first conductive layer, a second conductive layer, a first planar conductive ring and a feed conductor. The first substrate includes a first surface and a second surface, wherein the first surface is opposite to the second surface. The first conductive layer is disposed on the first surface. The second conductive layer is disposed on the second surface, wherein a main opening surrounded by a plurality of first conductive vias electrically connecting the first and the second conductive surface is formed on the second conductive layer, and the main opening defines a radiation cavity and center frequency. The first planar conductive ring surrounds the radiation cavity. The feed conductor feeds a wireless signal to the antenna unit. Both the first planar conductive ring and the feed conductor are placed between the first conductor layer and the second conductor layer. 1. An antenna unit , comprising:a first substrate, comprising a first surface and a second surface, wherein the first surface is opposite to the second surface;a first conductive layer, disposed on the first surface; anda second conductive layer, disposed on the second surface, wherein a main opening surrounded by a plurality of first conductive vias electrically connecting the first and the second conductive surface is formed on the second conductive layer, and the main opening and surrounding vias defines a radiation cavity;a first planar conductive ring, surrounding the radiation cavity, wherein the first planar conductive ring is embedded in the first substrate; anda feed conductor, feeding a wireless signal to the antenna unit.2. The antenna unit as claimed in claim 1 , wherein the feed conductor is located between the first conductive layer and the second conductive layer.3. The antenna unit as claimed in claim 1 , wherein the zero or more first planar conductive ring is located between the first conductive layer and the ...

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28-06-2012 дата публикации

Method and apparatus for writing data to optical storage medium

Номер: US20120163146A1
Принадлежит: MediaTek Inc

A method and apparatus for writing data to an optical storage medium are disclosed. A write signal indicating power levels of a laser diode is generated by encoding and decoding codewords. The codewords are generated and decoded according to a specific requirement proposed by the present invention. By doing so, toggling (i.e. state changing) times occurring in channels transferring the codewords can be significantly reduced to avoid the problems of pulse distortion and disappearance in high frequency transmission. Alternatively, toggles appearing in the respective channels can be spread to avoid interference between the channels. Further, a phase adjustment device for adjusting a phase of each codeword is disclosed.

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05-07-2012 дата публикации

VIDEO PROCESSING APPARATUS CAPABLE OF DYNAMICALLY CONTROLLING PROCESSED PICTURE QUALITY BASED ON RUNTIME MEMORY BANDWIDTH UTILIZATION

Номер: US20120169924A1
Автор: Chen Wei-Jen
Принадлежит: MEDIATEK INC.

A video processing apparatus is provided. A storage medium is operative to store multimedia data. A model design module is operative to determine a module factor according to a format of the multimedia data, monitor an amount of runtime bandwidth utilization of the storage medium, and dynamically adjust the module factor according to the amount of runtime bandwidth utilization of the storage medium. A PQ control module is operative to access the storage medium to process the multimedia data according to the module factor and output processed multimedia data. 1. A video processing apparatus , comprising:a storage medium operative to store multimedia data;a model design module, operative to determine a module factor according to a format of the multimedia data, monitor an amount of runtime bandwidth utilization of the storage medium, and dynamically adjust the module factor according to the amount of runtime bandwidth utilization of the storage medium; anda PQ control module, operative to access the storage medium to process the multimedia data according to the module factor and output processed multimedia data.2. The video processing apparatus as claimed in claim 1 , further comprising:a processor, operative to receive the module factor from the model design module and generate a PQ indication signal according to the module factor.3. The video processing apparatus as claimed in claim 2 , wherein the PQ control module comprises a plurality of image processing units for processing the multimedia data claim 2 , and the image processing units are turned on or off in response to the PQ indication signal.4. The video processing apparatus as claimed in claim 3 , wherein one or more of the turned on image processing units is/are operative to access the storage medium when processing the multimedia data claim 3 , and report the amount of runtime bandwidth utilization of the storage medium to the model design module.5. The video processing apparatus as claimed in claim 4 , ...

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12-07-2012 дата публикации

Meander Slot Antenna Structure and Antenna Module Utilizing the Same

Номер: US20120176292A1
Принадлежит: MEDIATEK INC.

A meander slot antenna structure for transmitting a wireless signal is provided. The meander slot antenna structure includes a substrate, a ground element, a feed conductor and a couple conductor. The substrate includes a first surface and a second surface, wherein the first surface is opposite to the second surface. The ground element is disposed on the second surface, wherein a meander slot is formed in the ground element. The feed conductor is disposed on the first surface, wherein the feed conductor corresponds to the meander slot. The couple conductor is disposed on the first surface and coupled with the feed conductor, wherein a via passes through the substrate and electrically connects the couple conductor to the ground element. 1. A meander slot antenna structure for transmitting a wireless signal , comprising:a substrate, comprising a first surface and a second surface, wherein the first surface is opposite to the second surface;a ground element, disposed on the second surface, wherein a meander slot is formed in the ground element;a feed conductor, disposed on the first surface, wherein the feed conductor corresponds to the meander slot; anda couple conductor, disposed on the first surface and coupled with the feed conductor, wherein a via passes through the substrate and electrically connects the couple conductor to the ground element.2. The meander slot antenna structure as claimed in claim 1 , wherein the couple conductor is disposed longitudinally claim 1 , the couple conductor comprises a connection end and a free end claim 1 , and the via is connected to the connection end.3. The meander slot antenna structure as claimed in claim 2 , wherein the meander slot comprises a resonance path edge claim 2 , the feed conductor overlaps with the resonance path edge at a feed point claim 2 , and when the meander slot antenna structure transmits the wireless signal claim 2 , a reverse current travels from the feed point claim 2 , along the resonance path edge ...

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12-07-2012 дата публикации

Power Control Method to Mitigate Interference for In-Device Coexistence

Номер: US20120176923A1
Автор:
Принадлежит: MEDIATEK, INC.

A power control method to mitigate in-device coexistence (IDC) interference is provided. A wireless communication device (UE) is equipped with a first LTE radio module and a second co-located WiFi/BT/GSNN radio module. Upon detecting coexistence or IDC interference, the UE applies power control method to mitigate the interference. In a first embodiment, the LTE radio module adjusts its power parameters locally without informing the serving eNB. In a second embodiment, the LTE radio module adjusts its power parameters and implicit informs the eNB through existing PHR reporting. In a third embodiment, the LTE radio module changes its power or power class and explicitly informs the eNB through UE capability or new RRC message or MAC CE. Power control can be used as a low cost and lightweight solution before applying other heavyweight solutions that either require more resource or control overhead, or have higher impact on throughput. 1. A method comprising:(a) determining an in-device coexistence (IDC) interference condition by a first OFDMA radio module co-located with a second radio module on a wireless communication device (UE);(b) determining power parameters by adjusting a UE-configured maximum transmitting power of the first OFDMA radio module based on the determined IDC interference condition; and(c) transmitting the adjusted power parameters to a serving base station upon satisfying a triggering condition to mitigate IDC interference.2. The method of claim 1 , wherein the determining in (a) involves receiving a coexistence notification from a control entity on the wireless device.3. The method of claim 1 , wherein the determining in (a) involves an activation or deactivation of the second radio module.4. The method of claim 1 , wherein the adjusting in (b) involves increasing a maximum power reduction (MPR) value and thereby decreasing the UE-configured maximum transmitting power of the first radio module.5. The method of claim 1 , wherein the power parameters ...

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12-07-2012 дата публикации

METHOD FOR DETERMINING AN INSTANCE FOR PERFORMING A CHANNEL STATE INFORMATION MEASUREMENT AND COMMUNICATIONS APPARATUSES UTILIZING THE SAME

Номер: US20120176925A1
Автор: HWANG Chien-Hwa
Принадлежит: MEDIATEK INC.

A communications apparatus is provided. A processor is coupled to a transceiver, and at least comprises a first processor logic unit for performing a channel state information measurement at the sub-frame(s) comprised in a first sub-frame subset configured by a peer communications apparatus to obtain a first measurement result, a second processor logic unit for performing a second channel state information measurement at the sub-frame(s) comprised in a second sub-frame subset configured by the peer communications apparatus to obtain a second measurement result, a third processor logic unit for reporting the first measurement result and the second measurement result to the peer communications apparatus via the transceiver at one or more reporting instances. The reporting instances are determined based on a plurality of reporting parameters, and the reporting parameters are respectively configured for the first sub-frame subset and second sub-frame subset by the peer communications apparatus. 1. A communications apparatus , comprising:a processor, coupled to a transceiver,wherein the processor at least comprises:a first processor logic unit for performing a channel state information measurement at the sub-frame(s) comprised in a first sub-frame subset configured by a peer communications apparatus to obtain a first measurement result;a second processor logic unit for performing a second channel state information measurement at the sub-frame(s) comprised in a second sub-frame subset configured by the peer communications apparatus to obtain a second measurement result; anda third processor logic unit for reporting the first measurement result and the second measurement result to the peer communications apparatus via the transceiver at one or more reporting instances,wherein the reporting instances are determined based on a plurality of reporting parameters, andwherein the reporting parameters are respectively configured for the first sub-frame subset and second sub-frame ...

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12-07-2012 дата публикации

Obtaining System Frame Number of Target Cell During Handover

Номер: US20120177006A1
Принадлежит: MEDIATEK, INC.

A method of obtaining system frame number for handover is provided. A UE receives a handover command from a serving base station in a serving cell. The UE performs downlink synchronization with a target base station. Upon synchronization, the UE determines a radio frame boundary of a target cell. The UE then obtains a system frame number of the target cell based on the radio frame boundary. The UE performs a handover procedure with the target cell by transmitting a RACH preamble to the target base station. The RACH preamble is transmitted over a PRACH resource determined from the system frame number without reading SFN information from a PBCH/BCH broadcasted from the target base station. Finally, the UE establishes data connection with the target base station. Handover interruption time is reduced by obtaining SFN before PBCH reading and decoding. 1. A method for handover in an LTE/LTE-A wireless communication system , the method comprising:receiving a handover command from a serving base station by a user equipment (UE), wherein the UE is served in a serving cell of the serving base station;performing downlink synchronization with a target base station, wherein the UE determines a radio frame boundary of a target cell of the target base station;obtaining a system frame number (SFN) of the target cell based on the radio frame boundary; andperforming a handover procedure with the target cell based on the obtained system frame number before reading SFN information in a broadcast channel broadcasted by the target base station.2. The method of claim 1 , wherein the handover procedure involves transmission over physical resource of a physical random access channel (PRACH) based on the obtained system frame number.3. The method of claim 2 , wherein the UE applies a time division multiplexing (TDD) frame structure claim 2 , and wherein the PRACH has a Preamble Format 4.4. The method of claim 3 , wherein the PRACH has a list of configuration indices including 51 claim 3 , ...

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12-07-2012 дата публикации

APPARATUS AND METHOD OF EFFICIENT SAMPLE ADAPTIVE OFFSET

Номер: US20120177103A1
Принадлежит: MEDIATEK INC.

For sample adaptive offset, classification may be used to classify the pixels into multiple categories and pixels in each category are offset compensated using an offset value for the category. The classification may be based on values of the current pixel and its neighboring pixels before SAO compensation. Therefore, the SAO compensated pixel cannot be written back to the current pixel location until the category for all pixels are determined. An embodiment of the present invention stores the relation between the current pixel and said one or more neighboring pixels so that the SAO compensated current pixel can replace the current pixel without buffering the to-be-processed pixels for classification. The SAO process may be performed on a region by region basis to adapt to the local characteristics of the picture. Rate-distortion optimization (RDO) is often used to guide the mode decision, such as region splitting/region merging decision. Computations associated with the RDO process usually are very computational intensive. Accordingly, distortion reduction estimation is developed which can substantially reduce the required computation associated with RDO. 1. A method of mode decision for sample adaptive offset (SAO) compensation of processed video data using rate-distortion optimization (RDO) , the method comprising:receiving the processed video data;identifying SAO modes;determining distortion associated with each of the modes according to distortion reduction, wherein the distortion reduction is related to a difference between a first distortion and a second distortion, the first distortion is associated with SAO compensated signal and original signal associated with the processed video data, and the second distortion is associated with reconstructed signal and the original signal associated with the processed video data;determining rate-distortion (RD) cost based on the distortion for said each of the modes; selecting a best mode among the modes, wherein the ...

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12-07-2012 дата публикации

Apparatus and Method of Sample Adaptive Offset for Video Coding

Номер: US20120177107A1
Принадлежит: MEDIATEK INC.

An apparatus and method for sample adaptive offset to restore intensity shift of processed video data are described. In a video coding system, the video data are subject to various processing such as prediction, transformation, quantization, deblocking, and adaptive loop filtering. Along the processing path in the video coding system, certain characteristics of the processed video data may be altered from the original video data due to the operations applied to video data. For example, the mean value of the processed video may be shifted. Therefore, the pixel intensity shift has to be carefully compensated or restored to alleviate the artifacts. Accordingly a sample adaptive offset scheme is disclosed that can take into consideration of the dynamic characteristics within a frame using a region partition scheme. Furthermore, the sample adaptive offset scheme also supports multiple SAO types that can be tailored to the characteristics of processed video data and achieve better quality. 1. A method for decoding of a video bitstream generated by a video coding system with sample adaptive offset (SAO) , the method comprising:receiving video bitstream;deriving processed video data from the video bitstream;partitioning the processed video data into regions, wherein each of the regions can be equal to or smaller than a picture;deriving a SAO type from the video bitstream for each of the regions;determining a category from a group of categories associated with the SAO type for each of pixels in said each of the regions;deriving intensity offset from the video bitstream for the category associated with the SAO type; andapplying sample adaptive offset compensation to said each of the pixels in the region of the processed video data based on the intensity offset for the category of the SAO type selected.2. The method of claim 1 , wherein the processed video data correspond to reconstructed video data before deblocking processing claim 1 , deblocked video data after the deblock ...

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12-07-2012 дата публикации

Measurement Gap Configuration in Wireless Communication Systems with Carrier Aggregation

Номер: US20120178465A1
Принадлежит: MEDIATEK, INC.

A method of measurement gap reporting and configuration is provided. In a mobile network, a UE receives a capability enquiry message from a serving base station. The UE comprises one or more radio frequency modules that support a list of frequency bands and a list of carrier aggregation (CA) band combinations. In response to the enquiry, the UE transmits capability information containing measurement parameters to the base station. In one embodiment, the measurement parameters comprise need-for-gap parameters for each frequency band and each CA band combinations associated with a list of to-be-measured frequency bands of target cells. Based on the reported measurement parameters, the eNB transmits a measurement configuration message to the UE. Finally, the UE transmits a measurement gap application message back to the base station. The measurement gap application message indicates whether the UE applies MG for each configured component carrier. 1. A method , comprising:receiving a capability enquiry message from a serving base station by a user equipment (UE), wherein the UE comprises one or more radio frequency modules that support a list of frequency bands and a list of carrier aggregation (CA) band combinations;transmitting UE capability information containing measurement parameters to the base station, wherein the measurement parameters comprise need-for-gap parameters for each frequency band and each CA band combinations associated with a list of to-be-measured frequency bands of target cells; andreceiving a measurement configuration message from the base station.2. The method of claim 1 , wherein the need-for-gap parameters are a list of Boolean variables claim 1 , each variable indicates whether measurement gap is needed for a specific frequency band or CA band combination associated with a specific to-be-measured frequency band.3. The method of claim 1 , wherein the list of to-be-measured frequency bands comprises an inter-frequency band list and an inter-RAT ...

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19-07-2012 дата публикации

Apparatuses and Methods for Providing a 3D Man-Machine Interface (MMI)

Номер: US20120182396A1
Принадлежит: MEDIATEK INC.

An electronic interaction apparatus for providing a 3D MMI is provided with a processing unit. The processing unit determines a first length between an object positioned at a first time and a surface formed by two digital camera modules, and a second length between the object positioned at a second time and the surface. Also, the processing unit determines a third length between the object positioned at a third time and the surface, and determines a depth in a virtual 3D space corresponding to the object positioned at the third time according to the first length, the second length, and the third length. Particularly, the virtual 3D space is displayed in a display screen, the third time is later than the first time and the second time, and the third length is longer than the first length and shorter than the second length. 1. An electronic interaction apparatus for providing a 3D man-machine interface (MMI) , comprising:a processing unit, determining a first length between an object positioned at a first time and a surface formed by two digital camera modules, determining a second length between the object positioned at a second time and the surface, determining a third length between the object positioned at a third time and the surface, and determining a depth in a virtual 3D space corresponding to the object positioned at the third time according to the first length, the second length, and the third length,wherein the virtual 3D space is displayed in a display screen, the third time is later than the first time and the second time, and the third length is longer than the first length and shorter than the second length.2. The electronic interaction apparatus of claim 1 , wherein the two digital camera modules are disposed to be at a first distance from each other claim 1 , and the processing unit further obtains two images of the object at each of the first time claim 1 , the second time claim 1 , and the third time via the two digital camera modules.3. The ...

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26-07-2012 дата публикации

POWER SAVING METHOD AND SYSTEM APPLIED IN OPTICAL DISK DRIVE

Номер: US20120188861A1
Автор:
Принадлежит: MEDIATEK INC.

A power saving method and a power saving system are applied in an optical disk drive. The power saving system comprises a power controlling unit for differentiating the specific sets of circuits not being used at a specific operation rate and powering them down. The sets of circuits not being used will be powered up while the associated operation rate at which they are required to operate is nearly started. 1. A power saving method of an optical disk drive , comprising the steps of:determining an operation rate of the optical disk drive;powering up a first set of circuits related to the operation rate; andpowering down a second set of circuits, which are useless at the operation rate.2. The power saving method of claim 1 , further comprising the following steps before powering up the first set of circuits:determining a predetermined time that is equal to a warm-up time of the first set of circuits; andpowering up the first set of circuits at the predetermined time before the optical disc drive operated at the operation rate.3. The power saving method of claim 2 , wherein the length of warm-up time of the first set of circuits is whether a number of remaining steps for a step motor of a pick-up head is less than a threshold value.4. The power saving method of claim 1 , wherein the first set of circuits comprise a high speed data path and the second set of circuits comprise a low speed data path.5. The power saving method of claim 1 , wherein the first set of circuits comprise a high speed analog front end and the second set of circuits comprise a low speed analog front end.6. The power saving method of claim 1 , wherein the first set of circuits comprise a high speed decoder and the second set of circuits comprise a low speed decoder.7. The power saving method of claim 1 , wherein the first set of circuits comprise a low speed data path and the second set of circuits comprise a high speed data path.8. The power saving method of claim 1 , wherein the first set of ...

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02-08-2012 дата публикации

High Dynamic Range Time-Varying Integrated Receiver for Elimination of Off-Chip Filters

Номер: US20120196554A1
Принадлежит: MEDIATEK INC.

A receiver circuit includes a quadrature passive mixer, a first charge load, and a second charge load. The quadrature passive mixer has a differential input for receiving a differential input signal, and arranged for mixing the differential input signal with a quadrature local oscillator (LO) signal. The quadrature passive mixer has an in-phase mixer with a differential in-phase output, and a quadrature-phase mixer with a differential quadrature-phase output. The first and second charge loads are coupled to differential in-phase output and differential quadrature-phase output, respectively. In every quarter cycle of the quadrature LO signal, the differential in-phase output and the differential quadrature-phase output are arranged to be not shorted so as to avoid charging sharing between the first charge load and the second charge load, or are arranged to be shorted to cause charging sharing between the first charge load and the second charge load that generates a leakage path. 1. A receiver circuit comprising: an in-phase mixer, having a differential in-phase output; and', 'a quadrature-phase mixer, having a differential quadrature-phase output;, 'a quadrature passive mixer, having a differential input for receiving a differential input signal and arranged for mixing the differential input signal with a quadrature local oscillator (LO) signal, the quadrature passive mixer comprisinga first charge load, coupled to the differential in-phase output; anda second charge load, coupled to the differential quadrature-phase output.2. The receiver circuit of claim 1 , wherein the first charge load is directly connected between a first node and a second node of the differential in-phase output.3. The receiver circuit of claim 2 , wherein the in-phase mixer comprises:a first switch, having one end directly connected to the first node of the differential in-phase output;a second switch, having one end directly connected to the second node of the differential in-phase output;a ...

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16-08-2012 дата публикации

Method of UE RSRQ Measurement Precaution for Interference Coordination

Номер: US20120207044A1
Принадлежит: MEDIATEK, INC.

A method of UE RSRQ measurement precaution for interference coordination is provided. The UE receives radio signals of a neighbor cell under measurement. The neighbor cell applies a TDM silencing pattern for inter-cell interference coordination (TDM ICIC). The UE determines a measurement pattern that includes multiple subframes. The UE performs RSRQ measurements of the cell over multiple subframes and obtains multiple RSRQ measurement samples. The UE derives RSRQ measurement result by estimating the multiple RSRQ samples and applying a weighted average. RSRQ samples estimated to be more applicable are taken into account to more extent (e.g., applied with more weight), and/or RSRQ samples estimated to be less applicable are taken into account to less extent (e.g., applied with less weight, or discarded with zero weight). With UE precaution, a more predictable RSRQ measurement result is produced. 1. A method comprising:(a) receiving radio signals of a cell under measurement by a user equipment (UE) in a wireless communication system;(b) performing reference signal received quality (RSRQ) measurements of the measured cell over multiple subframes and thereby obtaining multiple RSRQ measurement samples; and(c) deriving RSRQ measurement result by estimating the multiple RSRQ measurement samples and applying a weighted average, wherein RSRQ samples estimated to be less applicable are applied with less weights, and wherein RSRQ samples estimated to be more applicable are applied with more weights.2. The method of claim 1 , wherein a neighbor cell applies a TDM silencing pattern for inter-cell interference coordination (ICIC) claim 1 , and wherein the TDM silencing pattern includes normal subframes and silenced subframes.3. The method of claim 2 , wherein the measured cell is the neighbor cell claim 2 , wherein RSRQ samples with lower received signal strength indicator (RSSI) are given less weights than RSRQ samples with higher RSSI.4. The method of claim 2 , wherein the ...

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16-08-2012 дата публикации

Priority Rules of Periodic CSI Reporting in Carrier Aggregation

Номер: US20120207047A1
Принадлежит: MEDIATEK, INC.

A method of determining priority rules for periodic CSI reporting in carrier aggregation is proposed. A UE obtains channel state information (CSI) feedback for multiple downlink component carriers (CCs) in a multi-carrier wireless communication network. Each downlink CC is associated with a feedback mode, and each feedback mode comprises a set of feedback types to be reported to a base station at time slots configured by an upper layer. The UE then determines a prioritized downlink CC for CSI reporting based on priority levels of the feedback types to be transmitted for each downlink CC at a given time slot. The UE then transmits the corresponding CSI feedback for the prioritized downlink CC at the given time slot via a feedback channel over a primary uplink CC. In one embodiment, different feedback types are prioritized by groups, and each group has several feedback types sharing the same priority. 1. A method comprising:obtaining channel state information (CSI) feedback for multiple downlink component carriers (CCs) by a user equipment (UE) in a multi-carrier wireless communication network, wherein each downlink CC is associated with a feedback mode, and wherein each feedback mode comprises a set of feedback types to be reported to a base station at time slots configured by an upper layer;determining a prioritized downlink CC for CSI reporting based on feedback types to be transmitted for each downlink CC at a given time slot, wherein each feedback type has a priority level; andtransmitting corresponding CSI feedback for the prioritized downlink CC over a primary uplink CC.2. The method of claim 1 , wherein each feedback mode is semi-statically configured by the upper layer and linked to a MIMO transmission mode.3. The method of claim 1 , wherein different feedback types are organized into groups based on CSI information types including precoding type indicator claim 1 , rank indication claim 1 , channel quality indicator claim 1 , precoder matrix indicator and ...

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16-08-2012 дата публикации

Systems and Methods for Providing Categorized Channel Reservation

Номер: US20120207101A1
Принадлежит: MediaTek Inc

A wireless communications system for categorized channel reservation is provided with a first wireless communications module and a second wireless communications module. The first wireless communications module transmits or receives a plurality of first wireless signals. The second wireless communications module transmits a first control packet according to an activity schedule of the first wireless communications module to disable a plurality of wireless communications stations from data transmissions, and transmit a second control packet to enable a predetermined number of the wireless communications stations to perform the data transmissions.

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16-08-2012 дата публикации

Method and Apparatus for Slice Common Information Sharing

Номер: US20120207227A1
Автор:
Принадлежит: MEDIATEK INC.

A method and apparatus for sharing information in a video coding system are disclosed. Embodiments according to the present invention use an information sharing flag to determine whether to share in-loop filter information in the picture level. The information sharing flag may be incorporated in the sequence level, the picture level or the slice level to indicate whether information sharing is enabled. Multiple information sharing flags may also be used to adaptively control information sharing. Furthermore, method and apparatus of using multiple Adaptation Parameter Sets (APSs) for information sharing of in-loop filters are disclosed. APS identifiers of in-loop filters may be incorporated in the slice header to allow each of the in-loop filters select respective filter information from the multiple APSs. A flag is incorporated in SPS to indicate whether multiple APS or single APS is used. Various exemplary syntax designs are disclosed to illustrate information sharing. 1. A method of sharing information in a video decoding system , the method comprising:receiving a first information-sharing flag in picture level data, sequence level data or slice level data;determining at least a portion of filter information of an in-loop filter for a slice of a picture from the picture level data, the slice level data, or a combination of the picture level data and the slice level data according to the first information-sharing flag; andapplying the in-loop filter to the slice.2. The method of claim 1 , wherein the first information-sharing flag is in the picture level data or the sequence level data; wherein said at least a portion of the filter information is in the picture level data for one or more slices of the picture to share if the first information-sharing flag indicates sharing; and wherein the filter information is in the slice level data if the first information-sharing flag indicates no sharing.3. The method of claim 1 , wherein the first information-sharing flag is ...

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16-08-2012 дата публикации

Method for Centralizing MDT User Involvement

Номер: US20120208503A1
Принадлежит: MEDIATEK, INC.

A method of managing user consent for minimization of drive test (MDT) measurements collection is provided. In one novel aspect, user consent information is handled by a centralized server having a central database. The user consent information is only stored in one place, and can be updated easily from a customer care system. The user consent information can easily be used as a basis for charging. In one embodiment, the centralize server is part of a home subscriber server (HSS), and the user consent information is part of subscription information. The solution enables managing user consent for MDT measurement collection with maximum simplicity and minimum impact to the current system. 1. A method , comprising:storing user consent information of user equipments (UEs) onto a central database by a centralized server in a wireless network, wherein the user consent information is related to minimization of drive test (MDT) measurement collection;interacting with an Operations, Administration, and Maintenance (OAM) system, wherein the OAM system selects a UE for MDT measurement collection;checking the user consent information before final MDT activation for the selected UE; andforwarding a signaling message to activate an MDT session such that MDT measurement collection is started for the selected UE with user consent.2. The method of claim 1 , wherein the centralized server is a home subscriber server (HSS) claim 1 , and wherein the user consent information is part of user subscription information.3. The method of claim 2 , wherein the user consent information is provided by a customer care system claim 2 , and wherein the user consent information is updated when the user subscription information is changed by the customer care system.4. The method of claim 1 , wherein the centralized server provides the user consent information claim 1 , via signaling claim 1 , to another network device including a mobility management entity (MME) claim 1 , a serving GPRS support node ...

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16-08-2012 дата публикации

COMMUNICATION SYSTEMS

Номер: US20120210151A1
Автор: Li Hao-Jung, Wang Tung-Yi
Принадлежит: MEDIATEK INC.

A communication system is provided and includes a current control circuit, a processing module, and a detection circuit. The current control circuit has an output node. The current control circuit is capable of drawing input current to the output node. The processing module is capable of operating according to a current accumulated at the output node and an output voltage at the output node. The detection circuit is capable of detecting the output voltage and controlling the processing module according to a detection result of the detection circuit. When the detection circuit detects that the output voltage is lower than a threshold, the detection circuit is capable of controlling the processing module to decrease an output power of a power amplifier or to decrease an operating frequency of a processor. 1. A communication system comprising:a current control circuit, having an output node and capable of drawing an input current to the output node;a processing module capable of operating according to a current accumulated at the output node and an output voltage at the output node; anda detection circuit capable of detecting the output voltage and controlling the processing module according to a detection result of the detection circuit.2. The communication system as claimed in claim 1 , wherein when the detection circuit detects that the output voltage is lower than a first threshold claim 1 , the detection circuit is capable of controlling the processing module to adjust an operation state.3. The communication system as claimed in claim 2 , wherein the processing module comprises a power amplifier claim 2 , and when the detection circuit detects that the output voltage is lower than the first threshold claim 2 , the detection circuit is capable of controlling the processing module to decrease an output power of the power amplifier.4. The communication system as claimed in claim 2 , wherein the processing module comprises a processor claim 2 , and when the detection ...

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23-08-2012 дата публикации

Playback methods and playback apparatuses for processing multi-view content

Номер: US20120212589A1
Автор: Min-Hung Chien
Принадлежит: MediaTek Inc

A playback method for processing a multi-view content includes: detecting a location of each viewer and accordingly generating a detecting result; and driving a display device according to the multi-view content and the detecting result. A playback apparatus for processing a multi-view content includes a detecting circuit and a driving circuit. The detecting circuit is arranged to detect a location of each viewer and accordingly generate a detecting result. The driving circuit is coupled to the detecting circuit, and implemented for driving a display device according to the multi-view content and the detecting result.

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23-08-2012 дата публикации

Single Input/Multiple Output (SIMO) or Multiple Input/Single Output (MISO) or Multiple Input/Multiple Output (MIMO) Antenna Module

Номер: US20120214424A1
Принадлежит: MEDIATEK INC.

An antenna module is provided. The antenna module includes a first slot antenna unit and a second slot antenna unit. The first slot antenna unit is coupled to a radio frequency (RF) unit. The second slot antenna unit is coupled to the RF unit. The first and second slot antenna units are embedded in a wireless communications dongle, and the wireless communications dongle operates as a modem to transmit or receive a wireless signal to or from a wireless telephony communications network for a computer via the first and second slot antenna units when the wireless communication dongle connects to the computer. 1. An antenna module , comprising:a first slot antenna unit, coupled to a radio frequency (RF) unit; anda second slot antenna unit, coupled to the RF unit,wherein the first and second slot antenna units are embedded in a wireless communications dongle, and the wireless communications dongle operates as a modem to transmit or receive a wireless signal to or from a wireless telephony communications network for a computer via the first and second slot antenna units when the wireless communication dongle connects to the computer.2. The antenna module as claimed in claim 1 , further comprising a substrate and a ground layer claim 1 , wherein the RF unit claim 1 , the ground layer claim 1 , the first slot antenna unit and the second slot antenna unit are disposed on the substrate.3. The antenna module as claimed in claim 2 , wherein the substrate comprises a first surface and a second surface claim 2 , and the first surface is opposite to the second surface claim 2 , and the ground layer is disposed on the second surface claim 2 , and the first slot antenna unit comprises a first feed conductor and a first slot claim 2 , and the second slot antenna unit comprises a second feed conductor and a second slot claim 2 , wherein the first slot and the second slot are formed in the ground element claim 2 , the first feed conductor is disposed on the first surface and ...

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13-09-2012 дата публикации

PRINTED CIRCUIT BOARD DESIGN FOR HIGH SPEED APPLICATION

Номер: US20120228006A1
Автор: Chen Nan-Jang
Принадлежит: MEDIATEK INC.

A printed circuit board (PCB) is disclosed. The PCB includes a substrate have a top surface and a bottom surface. A first conductive layer is disposed on the top surface of the substrate. The first conductive layer comprises a first signal net and a second signal net. An outermost insulating layer is disposed on the top surface of the substrate to cover the substrate and the first conductive layer. The outmost insulating layer comprises an opening to expose a portion of the second signal net. And, a second conductive layer is disposed on the outermost insulating layer and substantially covering at least a portion of the first signal net. The second conductive layer is filled into the opening to electrically connect to the second signal net which is able to provide one of a ground potential and a power potential. 1. A printed circuit board , comprising:a substrate having a top surface and a bottom surface;a first conductive layer disposed on the top surface of the substrate, wherein the first conductive layer comprises a first signal net and a second signal net;an outermost insulating layer disposed on the top surface of the substrate to cover the substrate and the first conductive layer, wherein the outmost insulating layer comprises an opening to expose a portion of the second signal net; anda second conductive layer disposed on the outermost insulating layer and substantially covering at least a portion of the first signal net,wherein the second conductive layer is filled into the opening to electrically connect to the second signal net which is able to provide one of a ground potential and a power potential.2. The printed circuit board of claim 1 , further comprising a third conductive layer disposed on the bottom surface of the substrate claim 1 , wherein the third conductive layer comprises a third signal net and a fourth signal net claim 1 , the fourth signal net is electrically connected to the second signal net through a first via hole formed in the ...

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13-09-2012 дата публикации

BUFFER MANAGEMENT METHOD AND OPTICAL DISC DRIVE

Номер: US20120233362A1
Автор:
Принадлежит: MEDIATEK INC.

A buffer management method operates by receiving a read command, wherein the read command comprises a read destination address for designating an associated area of a storage media; receiving write commands, wherein each of the write command comprises a data block and a write destination address for designating an associated location of the storage media to store the data block; buffering the data blocks of the write commands in a buffer; generating a latest list, wherein the latest list comprises a plurality of buffer indexes indicating buffer areas for storing the data blocks associated with the latest certain amount of received write commands; and determining whether the read destination address of the read command is associate with the latest list. 1. A buffer management method , comprising:receiving a read command, wherein the read command comprises a read destination address for designating an associated area of a storage media;receiving write commands, wherein each of the write command comprises a data block and a write destination address for designating an associated location of the storage media to store the data block;buffering the data blocks of the write commands in a buffer;generating a latest list, wherein the latest list comprises a plurality of buffer indexes indicating buffer areas for storing the data blocks associated with the latest certain amount of received write commands; anddetermining whether the read destination address of the read command is associate with the latest list;if the determination result is positive, outputting an associated data block from the buffer, and renewing the latest list;if the determination result is negative, accessing the storage media to acquire a read data block stored on the associated area of the storage media, buffering the read data block in the buffer, and modifying the latest list.2. The buffer management method as claimed in further comprising:generating a write list, wherein the write list comprises a ...

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20-09-2012 дата публикации

ELECTRONIC APPARATUS AND METHOD FOR SHARING ETHERNET CIRCUIT BETWEEN PLURALITY OF PORTS

Номер: US20120236852A1
Автор:
Принадлежит: MEDIATEK INC.

The invention provides an electronic apparatus. In one embodiment, the electronic apparatus comprises a plurality of ports, an Ethernet circuit, a port switch, and a flow control scheduler. The Ethernet circuit generates a plurality of transmitted packets according to transmitted data sent from the host, and derives received data sent to a host from a plurality of received packets. The flow control scheduler receives a plurality of transmitting requests corresponding to the ports from the host, arbitrates between the transmitting requests corresponding to the ports to select a transmitting port from the ports, receives a plurality of receiving requests corresponding to the ports from the host, and arbitrates between the plurality of receiving requests corresponding to the ports to select a receiving port from the ports. The port switch sends the transmitted packets to the transmitting port, and receives the received packets from the receiving port. 1. An electronic apparatus , comprising:a plurality of ports;an Ethernet circuit, coupled to a host, comprising an Ethernet physical layer transceiver and an Ethernet media access controller (MAC), generating a plurality of transmitted packets according to transmitted data sent from the host, and deriving received data sent to the host from a plurality of received packets;a flow control scheduler, receiving a plurality of transmitting requests corresponding to the ports from the host, arbitrating between the transmitting requests corresponding to the ports to select a transmitting port from the ports, receiving a plurality of receiving requests corresponding to the ports from the host, and arbitrating between the plurality of receiving requests corresponding to the ports to select a receiving port from the ports; anda port switch, coupled between the ports and the Ethernet circuit, sending the transmitted packets to the transmitting port, and receiving the received packets from the receiving port.2. The electronic ...

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20-09-2012 дата публикации

Method and Apparatus for Derivation of Spatial Motion Vector Candidate and Motion Vector Prediction Candidate

Номер: US20120236941A1
Принадлежит: MEDIATEK INC.

An apparatus and method for deriving a motion vector predictor are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the information to be transmitted or stored. Motion vector prediction has been used to further conserve the bitrate associated with motion vector coding. In a conventional coding system, a motion vector predictor (MVP) is selected from the spatial MVPs and temporal MVP. The spatial MVP according to a conventional approach is based on motion vectors (MVs) of neighboring blocking pointing to a target reference picture in a given reference list. Embodiments according to the present invention perform the MVP search among an extended search set including MVs pointing to other reference pictures in the given reference list or the other reference list and MVs pointing to the target reference picture in the given reference list or the other reference list. Other aspects of the present invention address the search order of the search set and configuration of neighboring blocks. 1. A method of deriving a motion vector predictor (MVP) for a motion vector (MV) of a current block in Inter , or Merge , or Skip mode , wherein the MV is associated with the current block and a corresponding block of a target reference picture in a given reference list , the method comprising:receiving motion vectors (MVs) associated with neighboring blocks of the current block;determining a search set, wherein the search set comprises search elements corresponding to first search MVs of the neighboring blocks pointing to the target reference picture in the given reference list, and at least one of second search MVs of at least one of the neighboring blocks pointing to other reference pictures in the given reference list, the target reference picture in other reference list, or the other reference pictures in the other reference list;determining a search order for the search set;determining the MVP for ...

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20-09-2012 дата публикации

Method and Apparatus for Deriving Temporal Motion Vector Prediction

Номер: US20120236942A1
Принадлежит: MEDIATEK INC.

A method and apparatus for deriving a temporal motion vector predictor (MVP) are disclosed. The MVP is derived for a current block of a current picture in Inter, or Merge, or Skip mode based on co-located reference blocks of a co-located block and a flag is used to indicate the co-located picture. More than one co-located reference blocks can be used to derive the temporal MVP and the co-located reference blocks can be selected from the co-located block as well as neighboring blocks of the co-located block. A search set comprises search motion vectors associated with the co-located reference block(s) is formed. The search motion vector (MV) corresponding to the co-located reference block in the same reference list is searched before the search MV in a different reference list. Various schemes to accommodate implicit method of deriving co-located picture are also disclosed. 1. A method of deriving a motion vector predictor (MVP) for a motion vector (MV) of a current block of a current picture in Inter , or Merge , or Skip mode , wherein the MV is associated with the current block and a corresponding block of a target reference picture in a given reference list , The method comprising:selecting a co-located block corresponding to a co-located picture;receiving one or more reference motion vectors (MVs) of one or more co-located reference blocks associated with the co-located block;determining a search set, wherein the search set comprises one or more search MVs associated with said one or more co-located reference blocks;determining a search order for the search set;determining the MVP for the current block based on the search set and the search order; andproviding the MVP for the current block.2. The method of claim 1 , wherein the co-located picture associated with the co-located block is indicated by a flag claim 1 , and information associated with the flag is incorporated in sequence level claim 1 , picture level claim 1 , or slice level.3. The method of claim 1 , ...

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27-09-2012 дата публикации

Antenna Module

Номер: US20120242555A1
Автор:
Принадлежит: MEDIATEK INC.

An antenna module is provided. The antenna module includes a radiator, a feed pin, a ground element, a first parasitic arm, a second parasitic arm and an impedance matching unit. The radiator includes a first section and a second section, wherein an end of the first section is connected to the second section, and the first section is perpendicular to the second section. The feed pin is connected to another end of the first section. The first parasitic arm is parallel to the second section, wherein an end of first parasitic arm is connected to the ground element, and the first parasitic arm couples with the second section of the radiator. The impedance matching unit is connected to the second section and the ground element. The second parasitic arm is partially parallel to the first section, and the second parasitic arm couples with the first section of the radiator, and an end of the second parasitic arm is connected to the ground element. 1. An antenna module , comprising:a radiator, comprising a first section and a second section, wherein an end of the first section is connected to the second section, and the first section is perpendicular to the second section;a feed pin, connected to another end of the first section;a ground element;a first parasitic arm, parallel to the second section, wherein an end of first parasitic arm is connected to the ground element, and the first parasitic arm couples with the second section of the radiator; andan impedance matching unit, connected to the second section and the ground element.2. The antenna module as claimed in claim 1 , further comprising a second parasitic arm claim 1 , wherein the second parasitic arm is partially parallel to the first section claim 1 , and the second parasitic arm couples with the first section of the radiator claim 1 , and an end of the second parasitic arm is connected to the ground element.3. The antenna module as claimed in claim 2 , wherein the ground element is planar claim 2 , and the ground ...

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04-10-2012 дата публикации

Apparatus and Method to Adjust Clock Duty Cycle of Memory

Номер: US20120250426A1
Автор:
Принадлежит: MEDIATEK INC.

An embodiment of the invention provides a memory controller for controlling a memory. The memory controller comprises a pulse width modulation module, a voltage comparator and a duty cycle calibration device. The pulse width modulation module is suitable for receiving a clock signal to generate a first voltage. The voltage comparator is suitable for receiving and comparing a reference voltage with the first voltage to output a comparison signal. The duty cycle calibration device is suitable for adjusting a duty cycle of the clock signal according to the comparison signal. 1. A memory controller for controlling a memory , comprising:a pulse width modulation module suitable for receiving a clock signal to generate a first voltage;a voltage comparator suitable for receiving and comparing a reference voltage with the first voltage to output a comparison signal; anda duty cycle calibration device suitable for adjusting a duty cycle of the clock signal according to the comparison signal.2. The controller as claimed in claim 1 , wherein the duty cycle calibration device comprises:a duty cycle corrector suitable for generating a duty cycle calibration signal according to the comparison signal; anda duty adjuster suitable for adjusting the duty cycle of the clock signal according to the duty cycle calibration signal.3. The controller as claimed in claim 1 , wherein the reference voltage is set according to a target duty cycle.4. The controller as claimed in claim 3 , wherein the target duty cycle is 50%.5. The controller as claimed in claim 2 , wherein the duty cycle calibration signal comprises a phase signal that represents a duty cycle calibration amount claim 2 , and a select signal which indicates that the duty cycle of the clock signal is larger than or less than a target duty cycle.6. The controller as claimed in claim 1 , further comprising a level shifter suitable for adjusting a voltage level of the clock signal.7. The controller as claimed in claim 1 , wherein the ...

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04-10-2012 дата публикации

Failure Event Report Correlation for Distributed RAN Self-Organization

Номер: US20120250498A1
Автор:
Принадлежит: MEDIATEK, INC.

A method of failure event report correlation is proposed. A UE detects a failure event in a first cell served by a first base station, and the UE is assigned with a previous C-RNTI. The failure event may include a radio link failure, a handover failure, or a RACH failure. The UE then performs an RRC establishment procedure with a second base, and the UE is assigned with a new C-RNTI. After the RRC establishment, the UE transmits a failure event report along with the correlation information to the second base station. The second base station then forwards the failure event report and the previous C-RNTI to the first base station. The first base station can correlate the failure event report with the previous failure event based on the previous C-RNTI to avoid double bookkeeping and improve MRO decision for SON. 1. A method , comprising:detecting a failure event by a user equipment (UE) in a first cell served by a first base station;performing a radio resource control (RRC) establishment procedure with a second cell served by a second base station; andtransmitting a failure event report to the second base station after the RRC establishment, wherein the UE also transmits correlation information, and wherein the correlation information refers to an earlier connection or connection attempt associated with the failure event.2. The method of claim 1 , further comprising:performing an RRC re-establishment procedure with the second base station using a first cell radio network temporary identifier (CRNTI) before the RRC establishment procedure; andreceiving or deducing the correlation information from the second base station, wherein the correlation information is different from the first CRNTI.3. The method of claim 2 , wherein the RRC re-establishment procedure includes a random access channel (RACH) procedure claim 2 , and wherein the correlation information contains RACH resource information of the RACH procedure.4. The method of claim 3 , wherein the correlation ...

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04-10-2012 дата публикации

Method of Maintaining Multiple Timing Advance

Номер: US20120250520A1
Принадлежит: MEDIATEK, INC.

A method of managing multiple timing advance (TA) groups, maintaining multiple TA timers, and performing UL synchronization in a multi-carrier wireless system is provided. When a new component carrier (CC) is configured, it is assigned to a TA group having a TA group identifier. The TA groups are managed statically or dynamically. The TA group identifier is used to uniquely identify the TA group in the operations of uplink (UL) timing synchronization. Multiple TA timers are assigned to multiple TA groups. The TA timers may have different values for different TA group. Different embodiments of UL timing adjustments for multiple TA groups are provided. 1. A method for managing and maintaining timing advance in a multi-carrier wireless communication network , the method comprising:assigning a primary cell (PCELL) of a user equipment (UE) to a first timing advance (TA) group, wherein the first TA group is associated with a first TA group index;assigning a secondary cell (SCELL) of the UE to a second TA group, wherein the second TA group is associated with a second TA group index;receiving a timing reference signal from the UE over the SCELL; andtransmitting an uplink timing advance to be applied for the second TA group based on timing measurements of the timing reference signal.2. The method of claim 1 , wherein the SCELL is statically assigned to the second TA group.3. The method of claim 1 , wherein the SCELL is dynamically assigned to the second TA group based on the uplink timing advance value.4. The method of claim 1 , wherein the timing reference signal is a random access channel (RACH) preamble code claim 1 , wherein the timing advance is transmitted via a random access response (RAR) message indicated by a physical downlink control channel (PDCCH) claim 1 , and wherein the PDCCH is scrambled by a cell radio network temporary identifier (C-RNTI) and transmitted over the PCELL or the SCELL.5. The method of claim 1 , wherein the timing reference signal is a random ...

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04-10-2012 дата публикации

PTA METHOD AND APPARATUS UTILIZING THE SAME

Номер: US20120250673A1
Принадлежит: MEDIATEK INC.

An apparatus (and related method) coordinates wireless communication operations for coexisted wireless communication modules. The apparatus includes a packet traffic arbitration (PTA) module coupled between a first wireless communication module and a second wireless communication module, granting the first request requesting for a first wireless communication operation with a first priority in a first time period from the first wireless communication module, receiving a second request requesting for a second wireless communication operation with a second priority from the second wireless communication module when the granted first wireless communication operation is not finished. In operation, the first wireless communication operation interferes with the second wireless communication operation, the PTA module granting the second request and informing the first wireless communication module to take back the granted first request when the second priority is higher than the first priority. 1. An apparatus for coordinating wireless communication operations for coexisted wireless communication modules , comprising:a packet traffic arbitration (PTA) module coupled between a first wireless communication module and a second wireless communication module, granting the first request requesting for a first wireless communication operation with a first priority in a first time period from the first wireless communication module, receiving a second request requesting for a second wireless communication operation with a second priority from the second wireless communication module when the granted first wireless communication operation is not finished, wherein the first wireless communication operation interferes with the second wireless communication operation, the PTA module granting the second request and informing the first wireless communication module to take back the granted first request when the second priority is higher than the first priority.2. The apparatus as ...

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04-10-2012 дата публикации

Signaling Design to Support In-Device Coexistence Interference Avoidance

Номер: US20120252442A1
Принадлежит: MediaTek Inc

A method of implicit signaling to support In-Device coexistence interference avoidance is provided. A UE sends an IDC interference indication to an eNB. The indication indicates that a serving frequency becomes unusable due to a coexistence interference problem. The indication does not explicitly indicate a frequency index or a frequency location of the unusable serving frequency. The eNB determines the serving frequency as unusable in an implicit manner. The eNB also determines an implied unusable frequency region based on the received IDC indication. The implied unusable frequency region is between the serving frequency and the ISM band. In one advantageous aspect, the eNB configures a condition for the UE, such that the UE is refrained from sending IDC interference indications unless the condition is satisfied.

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18-10-2012 дата публикации

TRANSCEIVER CAPABLE OF IQ MISMATCH COMPENSATION ON THE FLY AND METHOD THEREOF

Номер: US20120263215A1
Автор: Peng Chun-Hsien
Принадлежит: MEDIATEK INC.

A transceiver capable of IQ mismatch compensation on the fly and a method thereof. The transceiver comprises a transmitter circuit and a loop-back circuit. The transmitter circuit is configured to up-convert a modulation signal on the fly to generate a first RF signal. The loop-back circuit is configured to down-convert the first RF signal and then digitize the down-converted first RF signal to determine a first IQ mismatch parameter based on a first statistical measure of the digitized down-converted RF signal. The transmitter circuit is further configured to compensate for first IQ mismatch in the transmitter circuit according to the first IQ mismatch parameter to generate an IQ compensated modulation signal. 1. A transceiver capable of IQ mismatch compensation , comprising:a transmitter circuit, configured to up-convert a modulation signal on the fly to generate a first RF signal; anda loop-back circuit, configured to down-convert the first RF signal and then digitize the down-converted first RF signal to determine a first IQ mismatch parameter based on a first statistical measure of the digitized down-converted first RF signal,wherein the transmitter circuit is further configured to compensate for first IQ mismatch in the transmitter circuit according to the first IQ mismatch parameter to generate an IQ compensated modulation signal.2. The transceiver of claim 1 , wherein the transmitter circuit is configured to up-convert the modulation signal on the fly by a first oscillation signal with a first oscillation frequency that is substantially identical to a second oscillation frequency of a second oscillation signal claim 1 , which is used to down-convert the RF signal in the loop-back circuit.3. The transceiver of claim 1 , wherein the loop-back circuit is further configured to receive a second RF signal from an air interface claim 1 , down-convert the second RF signal and then digitize the down-converted second RF signal to determine a receiver IQ mismatch ...

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01-11-2012 дата публикации

Gnss receiver and method for determining whether to switch from one operation state to another operation state according to state switching criterion and positioning information

Номер: US20120274509A1
Принадлежит: MediaTek Inc

A method for controlling a global navigation satellite system (GNSS) receiver operated in a first operation state includes: providing a state switching criterion; obtaining a positioning information; determining whether to switch from the first operation state to a second operation state according to the obtained positioning information and the state switching criterion, wherein the power consumption of the GNSS receiver operating under the first operation state and the second operation state is different.

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