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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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Применить Всего найдено 105372. Отображено 100.
12-01-2012 дата публикации

Area Sensor and Display Apparatus Provided With An Area Sensor

Номер: US20120007090A1
Автор: Hajime Kimura, Jun Koyama, Masato Yonezawa, Shunpei Yamazaki, Yu Yamazaki
Принадлежит: Semiconductor Energy Laboratory Co Ltd

An area sensor of the present invention has a function of displaying an image in a sensor portion by using light-emitting elements and a reading function using photoelectric conversion devices. Therefore, an image read in the sensor portion can be displayed thereon without separately providing an electronic display on the area sensor. Furthermore, a photoelectric conversion layer of a photodiode according to the present invention is made of an amorphous silicon film and an N-type semiconductor layer and a P-type semiconductor layer are made of a polycrystalline silicon film. The amorphous silicon film is formed to be thicker than the polycrystalline silicon film. As a result, the photodiode according to the present invention can receive more light.

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Номер записи: 1
12-01-2012 дата публикации

Contrast control for display device

Номер: US20120007880A1
Автор: Pei-Chen Huang, Po-Yang Wu, Shih-Yu Hsu, Yu-Chung Lee
Принадлежит: Realtek Semiconductor Corp

A contrast control device is provided. The device of the invention includes a detecting unit, a judging unit, a backlight control unit, a gain generating unit and a contrast gain processing unit. The detecting unit calculates an average value and detects a maximum value of a current image. The judging unit generates a gain index and a brightness index according to the average value. The backlight control unit generates a backlight control signal according to the brightness index. The gain generating unit generates a first contrast gain value and a soft-clamping gain value according to the gain index, the average value and the maximum value and then selects one from the first contrast gain value and the soft-clamping gain value for output as a second contrast gain value according to an input pixel value of the current image. The contrast gain processing unit generates an output pixel value according to the second contrast gain value and the input pixel value.

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Номер записи: 2
12-01-2012 дата публикации

Methods of driving colour sequential displays

Номер: US20120007899A1
Автор: Henricus Joseph Cornelus Kuijpers, Jan Van Der Horst
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

A method of driving a display uses first ( 4 ) and second ( 5 ) illumination cycles of the display. In each cycle, a first set of pixels ( 1′ ) is illuminated with a first color (R, G) and a second set of pixels ( 2′ ) is illuminated with a second color (G, B). The first and second colors of the two cycles together include at least three colors (R, G, B) for forming an image. This method provides a sequential drive scheme, in that at least two cycles are used with different color properties. However, each cycle uses at least two different colors, so that each cycle is not a single color across the whole display area. In this way, the color sequence is alternated spatially as well as temporally.

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Номер записи: 3
19-01-2012 дата публикации

Display device

Номер: US20120013650A1
Автор: Naoki Mizubuchi
Принадлежит: Sharp Corp

A display device with a simple structure is provided where the number of electrical lines connected to the active matrix substrate can be reduced even when the number of pixels in the display module is increased. A liquid crystal display device includes a superimposing circuit (superimposing module) that superimposes a lighting signal for a light-emitting diode (light source) on a drive signal for a data line drive circuit (drive circuit) and a scan line drive circuit (drive circuit) to generate a superimposed signal. On the active matrix substrate are provided a photosensor unit (light-electricity transducer) that receives light from the light-emitting diode and outputs an electrical signal corresponding to the received light, and a decoding circuit (decoding module) that decodes the electrical signal from the photosensor unit to the drive signal for the data line drive circuit and the scan line drive circuit.

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Номер записи: 4
26-01-2012 дата публикации

Alignment factor for ambient lighting calibration

Номер: US20120019494A1
Автор: David W. Lum, Nyok Khiam Lam, Paolo Sacchetto, Ulrich Barnhoefer
Принадлежит: Apple Inc

A method, system, and apparatus that can be used to operate a display device in an energy efficient manner. The energy efficient display device can effectively and efficiently compensate for changes in ambient light incident at a display screen of the display device using an internal ambient light sensor to provide control signals to a backlight driver. Data from the ambient light sensor can be at least partially corrected to correspond more closely to a response of a Lambertian responsive light sensor

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Номер записи: 5
26-01-2012 дата публикации

Method and apparatus for power control of an organic light-emitting diode panel and an organic light-emitting diode display using the same

Номер: US20120019506A1
Автор: Gerben Hekstra, Ron LINSSEN, Serve LAMBIE
Принадлежит: Chimei Innolux Corp

A power control method, a power control apparatus, and an OLED display are provided. The method includes the steps of: estimating a voltage value according to image content of an image, the voltage value indicative of a minimal required voltage allowing the OLED panel to display the image; and controlling a voltage generator to adjust a booster voltage provided to the OLED panel according to the estimated voltage value.

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Номер записи: 6
26-01-2012 дата публикации

Image display device and method as well as program

Номер: US20120019532A1
Автор: Daisuke Shikata, Satoshi Yanagita
Принадлежит: Fujifilm Corp

Three-dimensional processing is applied to more than one images taken from different points of view to generate a stereoscopic image, and the stereoscopic image is stereoscopically displayed. An instruction to control a stereoscopic effect of the stereoscopically displayed stereoscopic image is received, and the three-dimensional processing is applied to the more than one images to achieve a stereoscopic effect according to the instruction. Then, control values of the stereoscopic effect according to the instruction are recorded in a recording unit with the control values being associated with the more than one images. At this time, if there are the control values of the stereoscopic effect recorded in the recording unit, difference values between the control values of the stereoscopic effect according to the instruction and the recorded control values of the stereoscopic effect are recorded in the recording unit.

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Номер записи: 7
26-01-2012 дата публикации

Color correction of mirrored displays

Номер: US20120019546A1
Автор: George Kyriazis, Ian C. Hendry, Maciej Maciesowicz
Принадлежит: Apple Inc

The disclosed embodiments provide a system that drives a first display and a second display mirrored to the first display from a computer system. During operation, the system obtains a framebuffer update for a first framebuffer associated with the first display. Next, the system performs a color-correction operation on the framebuffer update to obtain a color-corrected framebuffer update that enables color output from the second display to substantially match color output from the first display. Finally, the system uses the framebuffer update to drive the first display, and uses the color-corrected framebuffer update to drive the second display.

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Номер записи: 8
02-02-2012 дата публикации

Color-temperature-tunable device

Номер: US20120025695A1
Автор: Hsi Chuan HSU, Shih-Chen Shi, Yen Wen Chen
Принадлежит: Everlight Electronics Co Ltd

A color-temperature-tunable device comprises a first light emitting diode (LED) chip group comprising at least one first blue LED chip that emits a first light having a first peak wavelength, a second LED chip group comprising at least one second blue LED chip that emits a second light having a second peak wavelength different from the first peak wavelength, and a wavelength converting layer above at least a portion of the first LED chip group and a portion of the second LED chip group. The first LED chip group and the second LED chip group are driven by a first driving current and a second driving current, respectively.

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Номер записи: 9
02-02-2012 дата публикации

Using a display abstraction to control a display

Номер: US20120026079A1
Автор: David A. Curran, Maciej Maciesowicz
Принадлежит: Apple Inc

The disclosed embodiments relate to a system for controlling a display. This system includes a generic display-control interface which facilitates controlling the display, and a pluggable display-control module including code that implements a standardized set of display-control commands. The system also includes a plug-in framework that houses the pluggable display-control module and enables the generic display-control interface to communicate with the pluggable display-control module. In some embodiments, the system also includes a generic transport interface which facilitates communicating with the display, and a pluggable transport module including code that implements a standardized transport protocol. In these embodiments, the plug-in framework houses the pluggable transport module and enables the pluggable display-control module to communicate with the pluggable transport module.

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Номер записи: 10
02-02-2012 дата публикации

Projection display apparatus

Номер: US20120026170A1
Автор: Masahiro Haraguchi, Masutaka Inoue, Noboru Yoshinobe, Susumu Tanase, Takaaki Abe, Tomoya Terauchi, Yoshinao Hiranuma
Принадлежит: Sanyo Electric Co Ltd

A projection display apparatus according to embodiments includes a light source that emits color component light beams of a plurality of colors and an imager that modulates the color component light beams of a plurality of colors emitted from the light source. The projection display apparatus includes an element control unit that controls the imager; and a light source control unit that controls the light source. The element control unit controls the imager based on an image output signal obtained by a signal expansion process of an image input signal. The light source control unit performs a power reduction process of reducing power supplied to the light source according to an expansion amount of the image input signal expanded by the signal expansion process. The light source control unit performs a light emission period control process of adjusting light emission periods of a color component light beams of a plurality of colors emitted from the light source within a 1 -frame period according to the image input signal.

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Номер записи: 11
02-02-2012 дата публикации

Three-dimensional display and driving method thereof

Номер: US20120026204A1
Автор: Byung-Ki Chun, Geun-Young Jeong, Jong-Woong Park, Joo-hyung Lee, Yong-Seok Choi
Принадлежит: Samsung Mobile Display Co Ltd

A three-dimensional (3D) display is disclosed. One aspect includes: a display unit including a plurality of pixels and a slit barrier selectively shielding light irradiated from the display unit. The display unit additionally includes a controller controlling the turn-on and turn-off of the slit barrier and generating a first back light compensation signal compensating the reduction of the luminance of the display unit when the slit barrier is turned off and a second back light compensation signal compensating the reduction of the luminance of the display when the slit barrier is turned on to compensate the luminance reduction by the slit barrier. According to at least one aspect of the 3D display using a slit barrier scheme, it is possible to minimize the deterioration of luminance by a slit barrier.

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Номер записи: 12
09-02-2012 дата публикации

Light-Emitting Device

Номер: US20120032606A1
Автор: Hiroyuki Miyake, Kei Takahashi, Ryota Fukumoto, Yoshifumi Tanada
Принадлежит: Semiconductor Energy Laboratory Co Ltd

The amplitude of a potential of a signal line is decreased and a scan line driver circuit is prevented from being excessively loaded. A light-emitting device includes a light-emitting element; a first power supply line having a first potential; a second power supply line having a second potential; a first transistor for controlling a connection between the first power supply line and the light-emitting element; a second transistor, which is controlled in accordance with a video signal, whether outputting the second potential applied from the second power supply line or not; a switching element for selecting either the first potential applied from the first power supply line or the output of the second transistor; and a third transistor for selecting whether the first potential or the output of the second transistor which is selected by the switch is applied to a gate of the first transistor.

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Номер записи: 13
09-02-2012 дата публикации

Display substrate and display apparatus having the same

Номер: US20120032937A1
Автор: Bon-Yong Koo
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A display substrate includes a base substrate including a display area and a peripheral area, a pixel disposed on the display area, wherein the pixel includes; a pixel transistor connected to a gate line and a data line which cross each other, and a pixel electrode connected to the pixel transistor and the pixel electrode, and a gate driving circuit disposed on the peripheral area, wherein the gate driving circuit outputs a gate signal to the gate line and comprises a plurality of stages, an n-th stage of the gate driving circuit including a plurality of circuit transistors and a boosting capacitor including a first capacitor and a second capacitor, the plurality of circuit transistors and the first capacitor being disposed on a first area and the second capacitor being disposed on a second area of the peripheral area positioned between the first area and the display area.

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Номер записи: 14
09-02-2012 дата публикации

Display device

Номер: US20120032940A1
Автор: Makoto Kohno, Nobuyuki Mori, Seiichi Mizukoshi
Принадлежит: GLOBAL OLED TECHNOLOGY LLC

Noise on a current to be measured is removed. Horizontal power supply lines (PVDD) are arranged in a horizontal direction and supply a current to pixels in respective corresponding horizontal lines. A switch ( 8 ) connects a group of the horizontal power supply lines (PVDD) to a first power supply line (PVDDa) or a second power supply line (PVDDb) disposed outside a pixel region in a switchable manner. Only the horizontal power supply lines (PVDD) in a group to which a pixel to be measured belongs are supplied with power from the second power supply line (PVDDb) so as to measure a current of each pixel in the group, and a current flowing into a power source (PVDDa) connected to a group to which other pixels than the pixel to be measured belong is measured, to thereby calculate a pixel current based on a difference between the two measured currents.

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Номер записи: 15
09-02-2012 дата публикации

Electro-optic device and stereoscopic vision display apparatus

Номер: US20120033057A1
Автор: Hirosada Horiguchi
Принадлежит: Seiko Epson Corp

An electro-optic device includes: an electro-optic panel displaying a display image with illumination light emitted from an illumination device; a display control circuit controlling the electro-optic panel to display a right-eye image during a right display period and display a left-eye image during a left display period; a glasses control circuit controlling a right-eye shutter of stereoscopic vision glasses so as to maintain an open state during the right display period, controlling a left-eye shutter of stereoscopic vision glasses so as to maintain an open state during the left display period, and controlling both the right-eye shutter and the left-eye shutter so as to maintain a close state during a blocking period; and an illumination control circuit controlling the illumination device to vary an intensity of the illumination light in a pulsed shape during the blocking period.

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Номер записи: 16
16-02-2012 дата публикации

Organic light emitting display device and method of driving the same

Номер: US20120038617A1
Автор: Bo-Yong Chung, Deok-Young Choi
Принадлежит: Samsung Mobile Display Co Ltd

There is provided an organic light emitting display device including: pixels positioned at crossing regions of scan lines and data lines; a first control line and a second control line commonly coupled to the pixels; and a control line driver for supplying a first control signal to the first control line for a reset period and for supplying a second control signal to the second control line for a compensation period, wherein each of the pixels includes: an organic light emitting diode; a first transistor for controlling an amount of current supplied from a first power source to a second power source; a second transistor configured to turn on when the second control signal is supplied; and a fourth transistor for supplying an initial voltage to a gate electrode of the first transistor when the first control signal is supplied.

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Номер записи: 17
16-02-2012 дата публикации

Display Apparatus, Liquid Crystal Display Apparatus, Drive Method For Display Apparatus, And Television Receiver

Номер: US20120038834A1
Автор: Fumikazu Shimoshikiryoh, Kentaroh Irie, Masae Kitayama
Принадлежит: Sharp Corp

In at least one embodiment a ripple, generated in an electric potential of data signal lines even in long-term reversal driving, is reduced and display quality is improved. In at least one example embodiment, the liquid crystal display apparatus of the present invention includes scanning signal lines and data signal lines, in which one scanning pulse is outputted to select one scanning signal line, each of the data signal lines receives data signals whose polarities are reversed per one vertical scanning period while in one horizontal scanning period, one of two data signal lines receives a data signal having a polarity and the other of the two data signal lines receives another data signal having another polarity, the two data signal lines being arranged adjacent to each other, scanning pulses are successively outputted in sets of two, and at a timing in which two scanning pulses fall, two scanning pulses rise.

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Номер записи: 18
23-02-2012 дата публикации

Active matrix organic light emitting diode display

Номер: US20120044235A1
Автор: Gyu Hyeong Cho, Hyun Sik Kim, Jae Shin Lee, Jin Yong Jeon, Jun Hyeok Yang, Sang Hyun Cha, Youn Joong Lee
Принадлежит: Korea Advanced Institute of Science and Technology KAIST, Samsung Electro Mechanics Co Ltd

There is provided an active matrix organic light emitting diode display, including a data driver converting pre-prepared correction data into an analog correction signal and generating a driving signal according to the analog correction signal, a selector selecting a charging path for programming, according to the driving signal in a preset programming period and selecting a deterioration detection path in a preset emission period, a pixel unit including an organic light-emitting diode connected between a power supply receiving power and a ground, charging a value corresponding to the correction data according to the driving signal in the programming period, and allowing current to flow to the organic light-emitting diode according to the charged value in the emission period, and an ADC detecting deterioration voltage having deterioration information of the organic light-emitting diode of the pixel unit in the emission period.

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Номер записи: 19
23-02-2012 дата публикации

Display device and driving method thereof

Номер: US20120044270A1
Автор: Alexander Arkhipov, Baek-woon Lee
Принадлежит: Samsung Mobile Display Co Ltd

A display device includes a display panel, a gray scale converter, and a scale factor generator. The display panel includes a plurality of pixels. The gray scale converter is for converting gray levels of pixel data signals of a current frame by multiplying the pixel data signals of the current frame by a scale factor of the current frame. The scale factor generator is for comparing a conversion current value with an overcurrent prevention current value to generate the scale factor of the current frame.

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Номер записи: 20
23-02-2012 дата публикации

Liquid crystal display device

Номер: US20120044427A1
Автор: Fumikazu Shimoshikiryoh, Hiroto Suzuki, Kentaro Irie, Masae Kawabata, Toshihide Tsubata
Принадлежит: Sharp Corp

When each of R, G, and B pixels continuously display identical gray scales (1023 gray scale) in a liquid crystal display device in which the thicknesses of the liquid crystal layers are of R pixel>G pixel>B pixel, the R pixel is alternately supplied with a positive signal potential (SHR1023) and a negative signal potential (SLR1023), the G pixel is alternately supplied with a positive signal potential (SHG1023) and a negative signal potential (SLG1023), and the B pixel is alternately supplied with a positive signal potential (SHB1023) and a negative signal potential (SLB1023). A first middle value (SMR1023) that between SHR1023 and SLR1023 is set higher than a second middle value (SMG1023) that is between SHG1023 and SLG1023, and second middle value (SMG1023) is set higher than a third middle value (SMB1023) that is between SHB1023 and SLB1023.

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Номер записи: 21
23-02-2012 дата публикации

Entropy coder supporting selective employment of syntax and context adaptation

Номер: US20120044987A1
Автор: James D. Bennett
Принадлежит: Broadcom Corp

Entropy coder supporting selective employment of syntax and context adaptation. In video coding, different entropy coding is selectively and adaptively employed based on local and/or remote consideration(s). For example, certain entropy coding may be context adaptive while other entropy coding may be non-context adaptive, and may operate in accordance with syntax or without syntax. Selective adaptation between context adaptive entropy coding and non-context adaptive entropy coding, as well as those which operate using syntax or without syntax may be made based on one or more local and/or remote characteristic(s). Transitioning between the various end to end configurations midstream can occur upon reference frame transitions with appropriate header information leadoff in a given bitstream. A given device (e.g., encoder or transcoder) may be implemented to transition independently, in cooperation with, or under the direction/coordination with one or more other devices within the communication system.

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Номер записи: 22
01-03-2012 дата публикации

Display device

Номер: US20120049184A1
Автор: Atsushi Umezaki, Hiroyuki Miyake
Принадлежит: Semiconductor Energy Laboratory Co Ltd

To suppress fluctuation in the threshold voltage of a transistor, to reduce the number of connections of a display panel and a driver IC, to achieve reduction in power consumption of a display device, and to achieve increase in size and high definition of the display device. A gate electrode of a transistor which easily deteriorates is connected to a wiring to which a high potential is supplied through a first switching transistor and a wiring to which a low potential is supplied through a second switching transistor; a clock signal is input to a gate electrode of the first switching transistor; and an inverted clock signal is input to a gate electrode of the second switching transistor. Thus, the high potential and the low potential are alternately applied to the gate electrode of the transistor which easily deteriorates.

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Номер записи: 23
01-03-2012 дата публикации

Buffer and display system utilizing the same

Номер: US20120050244A1
Автор: Jiun-Wei Lu, Sheng-Feng Huang, Ting-Yao Chu
Принадлежит: Chimei Innolux Corp

A buffer generating an output signal and including a pull-high module and a pull-low module is disclosed. The pull-high module makes the output signal to have a rising edge. The pull-low module makes the output signal to have a falling edge. The falling edge includes a plurality of falling portions. A slope of a first falling portion of the falling portions is different from a slope of a second falling portion of the falling portions.

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Номер записи: 24
01-03-2012 дата публикации

Liquid crystal display system and pixel-charge delay circuit thereof

Номер: US20120050247A1
Автор: Chao-Min Lee, Chia-Yi Lu
Принадлежит: Chunghwa Picture Tubes Ltd

A liquid crystal display system for improving display color mismatch utilizes a pixel-charge delay circuit to generate a new latch-data signal for a source driver of the liquid crystal display system according to an output-enable signal and a latch-data signal generated by a timing control circuit of the liquid crystal display system. Therefore, when the source driver charges a pixel on an mth gate line, a switch corresponding to a pixel on an (m-1)th gate line is already completely turned off.

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Номер записи: 25
01-03-2012 дата публикации

Dynamic LED Driving Current Compensation for Cross-Panel Backlight Illumination Uniformity

Номер: US20120050339A1
Автор: Apostolos T. Voutsas, Jiandong Huang
Принадлежит: Sharp Laboratories of America Inc

A dynamic light emitting diode (LED) driving current compensation method is provided for ensuring cross-panel backlight illumination uniformity in a display device. A backlight panel includes a plurality of waveguide pipes and a front panel with a plurality of pixel rows. Each row overlies a corresponding waveguide pipe and includes a plurality of selectively enabled pixels formed in a sequence along the row. Light is supplied from a plurality of LEDs, where each LED supplies light to a corresponding waveguide pipe. For each front panel row, a pixel is selected for enablement and an LED drive current is selected in response to the enabled pixel. The LED drive current is selected in response to the distance between the waveguide pipe position underlying an enabled pixel in a corresponding front panel row and the first light interface.

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Номер записи: 26
01-03-2012 дата публикации

Method for operating a projector having a high-pressure discharge lamp

Номер: US20120050351A1
Автор: Andreas Huber, Bastian Dobler, Josef Kroell, Oskar Schallmoser
Принадлежит: OSRAM GMBH

In various embodiments, a method for operating a projector having a high-pressure discharge lamp, wherein an intensity of a light emitted by the high-pressure discharge lamp depends upon an electrical power supplied to the high-pressure discharge lamp, may comprise providing image information to be projected and, depending on the image information, determining a nominal value for the intensity of the light, supplying electrical power to the high-pressure discharge lamp at least in dependence on the nominal value for the intensity, determining a value correlated with a temperature of the high-pressure discharge lamp, and supplying additional electrical power-depending on the value for the temperature.

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Номер записи: 27
08-03-2012 дата публикации

Image display apparatus and information processing apparatus

Номер: US20120056905A1
Автор: Masahiro Baba, Ryosuke Nonaka, Yuma Sano
Принадлежит: Individual

In one embodiment, an image display apparatus is disclosed. The apparatus includes a liquid crystal panel, a backlight, a calculation unit, a reference unit, a multiplier unit, and a determination unit. The backlight includes light sources illuminating the liquid crystal panel unit. The calculation unit calculates a representative value of relative luminances of pixels in the each of small regions into which the display region is divided. The reference unit refers to prestored lighting pattern data items for the light sources. The multiplier unit multiplies, for each of the small regions, the referred lighting pattern data item by the representative value. The determination unit determines emission intensities of respective light sources based on multiplication results of the multiplier unit.

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Номер записи: 28
08-03-2012 дата публикации

Calibration of display for color response shifts at different luminance settings and for cross-talk between channels

Номер: US20120056910A1
Автор: Milivoje Aleksic, Reza Safaee-Rad
Принадлежит: Qualcomm Inc

The techniques of this disclosure are applicable to backlight display devices. For such devices, the backlight may have different backlight intensity settings in order to promote power conservation. The techniques of this disclosure may apply different adjustments to the display, depending on the backlight intensity setting. In one example, different color correction matrices may be applied for different backlight settings in order to achieve desirable adjustments in the device at the different backlight settings. The adjustments described herein may address chrominance shifts due to different backlight settings as well as cross-talk between color channels. The techniques may also be applicable to organic light emitting diode (OLED) displays that have different luminance settings, and some described techniques may be applicable to displays that have static or fixed luminance output.

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Номер записи: 29
08-03-2012 дата публикации

Adaptive color correction for display with backlight modulation

Номер: US20120056911A1
Автор: Milivoje Aleksic, Min Dai, Reza Safaee-Rad
Принадлежит: Qualcomm Inc

The techniques of this disclosure are applicable to backlight display devices. For such devices, the backlight may have different backlight intensity settings in order to promote power conservation. The techniques of this disclosure may apply different adjustments to the display, depending on the backlight intensity setting. In one example, different color correction matrices may be applied for different backlight settings in order to achieve desirable adjustments in the device at the different backlight settings. The adjustments described herein may address chrominance shifts due to different backlight settings as well as cross-talk between color channels. The techniques may also be applicable to organic light emitting diode (OLED) displays that have different luminance settings, and some described techniques may be applicable to displays that have static or fixed luminance output.

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Номер записи: 30
08-03-2012 дата публикации

System and Method for Remotely Identifying Display Components

Номер: US20120057082A1
Автор: Rick De Laet, William Dunn
Принадлежит: Manufacturing Resources International Inc

A system and method for remotely-identifying the components and/or software revisions within an electronic display. An electronic storage device may be placed within an electronic display assembly and placed in electrical communication with a network connection. The electronic storage device may contain identification numbers for one or more components or software revisions within the display. A computing device may be in electrical communication with the network connection so that the identification numbers on the electronic storage device may be accessed remotely. If a particular component or software revision is desired, the computing device may be used to search the contents of each electronic storage device at each display to determine which displays contain the desired component or software revision.

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Номер записи: 31
08-03-2012 дата публикации

Screensaver display system and method

Номер: US20120060130A1
Автор: Ting-Chieh Lin
Принадлежит: Hon Hai Precision Industry Co Ltd

A screensaver display system of an electronic device includes a timer, an event monitor, a timer controller, a first determining unit, a screensaver generator, and a display module. The timer controller instructs the timer to restart timing when the event monitor detects the occurrence of a predetermined event. The first determining unit determines whether the timer reaches a first threshold. The screensaver generator generates a screensaver, and the display module displays the screensaver to overlay a screen of a display unit of the electronic device.

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Номер записи: 32
15-03-2012 дата публикации

Photosensitive circuit and system for photosensitive display

Номер: US20120061556A1
Автор: Chen-Pang Kung, Issac Wing-Tak Chan
Принадлежит: Industrial Technology Research Institute ITRI

A photosensitive circuit is provided. The photosensitive circuit is adapted to a pixel in a pixel array. The photosensitive circuit includes a display element for generating light, transmitting light, or reflecting light, a control circuit coupled to the display element for controlling light intensity of the display element according to a data line and a gate line, and a photosensitive element coupled between the gate line and a read line for generating current at the read line to sense the position of an object according to a reflected light or a shadow from ambient light when light from the display element is reflected by an object or ambient light is shadowed by the object. The control terminal of the photosensitive element is connected to another gate line.

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Номер записи: 33
15-03-2012 дата публикации

Method of driving a light source, light source apparatus for performing the method and display apparatus having the light source apparatus

Номер: US20120062131A1
Автор: Jin-Won Jang, Min-soo CHOI, Won-Sik Oh
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A light source apparatus includes a plurality of light source parts, a power supply part, a current selection part and a current control part. The plurality of the light source parts are connected in parallel and the power supply part provides power to a first terminal of each of the light source parts. The current selection part selects the current level of one of the light source parts as a reference current level. The current control part adjusts the levels of the currents flowing through the light source parts to be substantially equal to the reference current level. Selection of the light source part that provides the reference current level is dynamically changed.

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Номер записи: 34
15-03-2012 дата публикации

Motion based display management

Номер: US20120062455A1
Автор: Pasquale DeMaio, Ruston Panabaker
Принадлежит: Microsoft Corp

A display manager is configured to handle the drawing of windows on one or more displays for an application differently based on detected motion information that is associated with a device. The display manager may not display windows for some applications while motion is detected, while the display manager may display windows for other applications even when motion is detected. Motion enabled applications may interact with the display manager and motion information to determine how to display windows while motion is detected.

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Номер записи: 35
15-03-2012 дата публикации

Method of processing image data and display apparatus performing the method

Номер: US20120062552A1
Автор: Bong-Hyun You, Jae-Sung Bae, Jai-Hyun Koh
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method of processing an image data includes generating a data frame that has a resolution of a high resolution using an original image data of a low resolution and outputting M (herein, M is a natural number not less four) data frames using the data frame of the high resolution. The original image data frame having the low resolution is processed into the image frame having the high resolution so that an image of the high resolution may be displayed on the display panel having the high resolution.

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Номер записи: 36
15-03-2012 дата публикации

Method and apparatus for providing brightness control in an interferometric modulator (imod) display

Номер: US20120062572A1
Автор: Marc Maurice Mignard
Принадлежит: Qualcomm Mems Technologies Inc

Methods and systems for providing brightness control in an interferometric modulator (IMOD) display are provided. In one embodiment, an interferometric modulator display pixel is provided that includes a microelectromechanical systems (MEMS) interferometric modulator having an associated first color spectrum, and a color absorber located substantially in front of the interferometric modulator display pixel, in which the color absorber has an associated second color spectrum. The micro electromechanical systems (MEMS) interferometric modulator is operable to shift the first color spectrum relative to the second color spectrum to control a visual brightness of the interferometric modulator display pixel independent of a color of the interferometric modulator display pixel.

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Номер записи: 37
15-03-2012 дата публикации

Organic light emitting display device and driving method thereof

Номер: US20120062613A1
Автор: Baek-woon Lee, Jong-Hwa Park
Принадлежит: Samsung Mobile Display Co Ltd

An organic light emitting display device includes: a display panel; a timing controller configured to receive image data when a vertical sync signal is activated, to receive reference data corresponding to the image data when the vertical sync signal is deactivated, and to generate an emission control signal in accordance with emission duty information of the reference data; and an emission driver configured to supply first and second emission powers to the display panel, and to control a duration of a period during which a potential difference between the first and second emission powers is greater than or equal to a reference value in accordance with the emission control signal.

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Номер записи: 38
15-03-2012 дата публикации

Organic light emitting display and method of driving the same

Номер: US20120062623A1
Автор: Do-Ik Kim, Jae-Woo Ryu, Jung-Keun Ahn
Принадлежит: Samsung Mobile Display Co Ltd

A method of driving an organic light emitting display in which a frame is divided into a plurality of sub frames, includes: storing a plurality of bit change values corresponding to emission times in a plurality of lookup tables; selecting one of the lookup tables from among the plurality of lookup tables; measuring and storing emission times of pixels included in the organic light emitting display; extracting one of the bit change values from the selected lookup table corresponding to the emission time of one of the pixels when first data to be supplied to the one of the pixels is input; and changing a bit value of the first data to generate second data to be supplied to the one of the pixels utilizing the extracted bit change value.

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Номер записи: 39
22-03-2012 дата публикации

Light emitting device, drive control method thereof, and electronic device

Номер: US20120068986A1
Автор: Jun Ogura, Yasushi Mizutani
Принадлежит: Casio Computer Co Ltd

The light emitting device comprises at least one data line, at least one pixel, a common electrode, a data driver and an ammeter, The pixel comprises a pixel drive circuit and a light emitting element, in which the pixel drive circuit includes a first transistor electrically connected to the data line and one end of the light emitting element, and the other end of the light emitting element is connected to the common electrode. The ammeter measures the current value of a detection current flowing from the data driver to the ammeter via the data line, the first transistor, the light emitting element of the pixel, and the common electrode when the data driver applies to the data line a first set voltage having such a potential that applies a forward bias voltage between both ends of the light emitting element via the first transistor.

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Номер записи: 40
22-03-2012 дата публикации

Plasma display panel drive method and plasma display device

Номер: US20120068987A1
Автор: Yutaka Yoshihama
Принадлежит: Panasonic Corp

In the driving method of a plasma display panel, one field contains a plurality of subfields and each of which has the following periods: an address period for generating an address discharge; a sustain period where a voltage is applied to data electrodes and sustain pulses corresponding to luminance weight are applied to scan electrodes and sustain electrodes for generating a sustain discharge; and an erase period where a voltage is applied to the scan electrodes and the sustain electrodes for generating an erase discharge. The erase discharge is generated selectively in the discharge cell having undergone an address discharge in the immediately preceding address period. In the sustain period of at least one of the subfields, a voltage to be applied to the data electrodes of the discharge cells having green phosphors is lower than that to be applied to the data electrodes of the discharge cells having red phosphors.

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Номер записи: 41
22-03-2012 дата публикации

Method of uniform distribution for increasing display rate

Номер: US20120069030A1
Автор: SONG Shang
Принадлежит: ZHONGQING DIGITAL EQUIPMENT CO Ltd

A method of uniform distribution for increasing a display rate. For data to be displayed, dividing a complete effective output enable (OE) time that is greater than one serial shift cycle into several unit serial shift cycles and uniformly distributing the effective OE time for display. The method implements the uniform distribution of the display time to the maximum extent by using an OE signal under the condition that the whole display time remains unchanged, thereby increasing effective output number of the uniform distribution, uniformly maintaining a display effect and steadily improving a refresh rate effect, so as to effectively increase a display quality and avoid a significant loss of brightness.

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Номер записи: 42
22-03-2012 дата публикации

Dynamic gamma control method for lcd

Номер: US20120069044A1
Автор: Chin-Hung Hsu, Feng-Ting Pai, Ming-Lin Lee
Принадлежит: Hannstar Display Corp

A dynamic gamma control method for an LCD is provided. The LCD displays a present frame by a plurality of gamma reference voltages and the present frame includes an R-pixel data sum, a G-pixel data sum and a B-pixel data sum which are obtained by respectively adding all R-pixel data, all G-pixel data and all B-pixel data of at least one pixel of the present frame. The method includes steps of: weighting the R-pixel data sum, the G-pixel data sum and the B-pixel data sum with a first, a second and a third parameters respectively and adding them up to obtain a gamma indication value, and choosing a suitable one from the plurality of gamma reference voltages to display the present frame thereby if the gamma indication value is equal to a gamma reference value formed by adding the first, the second and the third parameters up.

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Номер записи: 43
22-03-2012 дата публикации

Display of brightened preview image

Номер: US20120069221A1
Автор: Francisco Imai
Принадлежит: Canon Inc

An image capture device includes an image sensor for capturing image data of a scene, and a display screen for displaying a preview of the captured image of the scene. Additionally, the image capture device includes a photovoltaic solar cell for outputting electrical energy responsive to environmental lighting conditions. A control section determines whether the image capture device is or is not currently being used in a bright environment. Responsive to a determination that the image capture device is currently being used in a bright environment, the control section increases brightness of the display screen, and switches electrical energy outputted from the photovoltaic cell for use by the display screen.

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Номер записи: 44
29-03-2012 дата публикации

Actuated adaptive display systems

Номер: US20120075166A1
Автор: Seung Wook Kim, Stefan Marti
Принадлежит: SAMSUNG ELECTRONICS CO LTD

Adjustable, adaptive display system having individual display elements is able to change its configuration based on a user's movements, position, and activities. A method of adjusting a display system tracking a user is tracked using a camera or other tracking sensor, thereby creating user-tracking data. The user-tracking data is input to an actuator signal module which generates input signals for one or more actuators. The input signals are created, in part, from the user-tracking data. Two or more display elements are actuated using the one or more actuators based on the input signals. The display elements may be planar or curved. In this manner, a configuration of the display system adapts to user movements and adjusts systematically. This provides for a greater amount of a user's human visual field (or user FOV) to be filled by the display system.

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Номер записи: 45
29-03-2012 дата публикации

Backlight device and liquid crystal display device

Номер: US20120075326A1
Автор: Ryuji Tsuchiya, Shota Ikebe
Принадлежит: Harison Toshiba Lighting Corp

According to an embodiment, a backlight device includes a plurality of light guide plates, a plurality of light sources and a light-source substrate. The light guide plates overlap each other with a same light output direction; each of the light guide plates includes a plurality of stripe-shaped projections aligned on a light output face and a light output pattern. Each of the light sources emits light incident into any one of the light guide plates and propagating in an extending direction of the stripe-shaped projections. The light-source substrate includes a plurality of interconnections, a turning-on signal is selectively supplied via the interconnections to at least one of light source groups, and each of the light source groups includes at least one of the light sources. At least one part of a light emission face, including the light output faces, emits light output from the light source group receiving the turning-on signal.

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Номер записи: 46
05-04-2012 дата публикации

Oled display with a current stabilizing device and its driving method

Номер: US20120081034A1
Автор: Chin-Wei Chiang, ying-ju Liu, Yu-Pin Liao
Принадлежит: Winstar Display Co Ltd

An OLED display with a current stabilizing device employs a voltage boosting and current stabilizing device which is coupled between the driving-voltage line of the data driver and the data-power-supply wires to produce an output voltage higher than the driving voltage by boosting the driving voltage of the data driver, and then to maintain the current of the OLEDs at a constant level by performing current limiting, so that the problem of the current-ununiformity caused uneven luminance of the conventional OLED display can be solved, and the possibility that the luminance of the OLED panel will decay in a short period of time is reduce.

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Номер записи: 47
05-04-2012 дата публикации

Dynamic Display Adjustment Based on Ambient Conditions

Номер: US20120081279A1
Автор: Brian Christopher Attwell, Ken Greenebaum
Принадлежит: Apple Inc

The techniques disclosed herein use a display device, in conjunction with various optical sensors, e.g., an ambient light sensor or image sensors, to collect information about the ambient conditions in the environment of a viewer of the display device. Use of these optical sensors, in conjunction with knowledge regarding characteristics of the display device, can provide more detailed information about the effects the ambient conditions in the viewer's environment may have on the viewing experience. A processor in communication with the display device may create an ambient model based at least in part on the predicted effects of the ambient environmental conditions on the viewing experience. The ambient model may be used to adjust the gamma, black point, white point, or a combination thereof, of the display device's tone response curve, such that the viewer's perception remains relatively independent of the ambient conditions in which the display is being viewed.

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Номер записи: 48
05-04-2012 дата публикации

Display Array of Display Panel

Номер: US20120081343A1
Автор: Biing-Der Liu, Shan-Te Chen, Yu-Chieh Lin
Принадлежит: AU OPTRONICS CORP

A display array organization used in a display panel is provided. The display array includes a data line, a first scan line, a second scan line, a first pixel electrode, a second pixel electrode, a front-end switch and an intermediary switch. The first pixel electrode is connected to the data line with the front-end switch, and the second pixel electrode is connected to the first pixel electrode with the intermediary switch. The operation of the front-end switch and intermediary switch are controlled by the first and second scan line respectively. When only the front-end switch is activated, the first pixel electrode can receive the data signal from the data line. When both the front-end and intermediary switches are activated, the second pixel electrode can receive a data signal from the data line.

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Номер записи: 49
05-04-2012 дата публикации

Scaling for a lcd based upon viewing angle

Номер: US20120081388A1
Автор: Hao Pan, Xiaofan Feng
Принадлежит: Sharp Laboratories of America Inc

A method for image processing for a liquid crystal display comprising determining a dithered image and an interpolated based upon the image. The images are blended to form a blended image for displaying on the display.

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Номер записи: 50
05-04-2012 дата публикации

Display apparatus and method of driving the same

Номер: US20120081412A1
Автор: Byungchoon Yang, Dongkwon Kim, Heetae Kim, Ho-Young Kim, Hyeonyong Jang, Young-Keun Lee
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A display apparatus includes a display panel, a backlight unit, a backlight control circuit, sensors, a read-out circuit and a sensor auxiliary circuit. The display panel includes pixels and displays an image. The backlight unit includes a first light source which emits a first light in a infrared light range. The backlight control circuit controls a brightness of the first light source. The sensors sense an external signal and outputs first sensing signals. The read-out circuit outputs the first sensing signals as second sensing signals. The sensor auxiliary circuit compares a maximum value and a minimum value of the second sensing signals and provides a brightness control signal to the backlight control circuit based on the compared difference to control the brightness of the first light source.

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Номер записи: 51
05-04-2012 дата публикации

Multi-line addressing methods and apparatus

Номер: US20120081416A1
Автор: Euan Christopher Smith, Jonathan James Michael Halls, Paul Richard Routley
Принадлежит: Cambridge Display Technology Ltd

This invention relates to methods and apparatus for driving emissive, in particular organic light emitting diodes (OLED) displays using multi-line addressing (MLA) techniques. Embodiments of the invention are particularly suitable for use with so-called passive matrix OLED displays. A method of driving an emissive display, the display comprising a plurality of pixels each addressable by a row electrode and a column electrode, the method comprising: driving a plurality of said column electrodes with a first set of column drive signals; and driving two or more of said row electrodes with a first set of forward bias row drive signals at the same time as said column electrode driving with said column drive signals; then driving said plurality of column electrodes with a second and subsequent sets of column drive signals; and driving said two or more row electrodes with a second and subsequent sets of forward bias row drive signals at the same time as said column electrode driving with said second column drive signals.

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Номер записи: 52
12-04-2012 дата публикации

Pixel circuit and display panel with ir-drop compensation function

Номер: US20120086694A1
Автор: Szu-Heng Tseng, Tze-Chien Tsai
Принадлежит: AU OPTRONICS CORP

A pixel circuit and a display panel with an IR-drop compensation function are disclosed. The display panel includes multiple pixel circuits and multiple compensation circuits. Each of the pixel circuits includes a detecting switch. After a real work voltage of a pixel circuit is transmitted to a corresponding compensation circuit through a corresponding detecting switch, a data transmitted to the pixel circuit is adjusted by the compensation circuit according to a relationship between the real work voltage and an original work voltage.

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Номер записи: 53
12-04-2012 дата публикации

3d image display device and driving method thereof

Номер: US20120086706A1
Автор: Jeongki Lee, Joonyoung Park
Принадлежит: LG Display Co Ltd

A method of driving a 3D image display device includes according to an embodiment receiving 3D data and separating a 3D input frame including the 3D data into a left-eye data frame and a right-eye data frame; doubling the left-eye data frame into the original left-eye data frame and a copied left-eye data frame and doubling the right-eye data frame into the original right-eye data frame and a copied right-eye data frame; and modulating the original left-eye data frame to a first modulated left-eye data frame based on the copied right-eye data frame arranged prior to the original left-eye data frame, modulating the copied left-eye data frame, and the copied right-eye data frame.

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Номер записи: 54
12-04-2012 дата публикации

Liquid crystal display and local dimming control method thereof

Номер: US20120086713A1
Автор: Byoungchul Cho, Changkyun PARK, Daeho Cho, Heejung Hong
Принадлежит: LG Display Co Ltd

A liquid crystal display and a local dimming control method thereof are discussed. The liquid crystal display includes a liquid crystal display panel selectively displaying a 2D image and a 3D image in response to a mode signal, a backlight unit including a plurality of light sources, a backlight driving circuit individually driving a plurality of previously determined blocks each including the light sources based on a dimming value of each block, and a local dimming control circuit, that calculates a pixel gain value based on a dimming value of each block in a first frame, applies the pixel gain value to a data compensation for a second frame, which is arranged later than the first frame, and varies a time point when the pixel gain value for the data compensation is applied in response to the mode signal.

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Номер записи: 55
12-04-2012 дата публикации

Backlight apparatus and liquid crystal display apparatus

Номер: US20120087109A1
Автор: Motonobu Yoshikawa, Takahiro Kobayashi, Yuichi Nishikoji
Принадлежит: Panasonic Corp

A backlight apparatus is provided that enables a balance of brightness to be maintained over the entire area of a display screen and long life to be achieved. The surface of substrate 130 is opposite the rear surface of liquid crystal panel 110 . LEDs 140 are placed on the surface of substrate 130 . LED drive circuits 150 supply LEDs 140 with a current that causes LEDs 140 to emit light that illuminates liquid crystal panel 110 . LED drive circuits 150 supply a lower current to LEDs 140 placed in an area having a higher ambient temperature within the surface area of substrate 130.

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Номер записи: 56
19-04-2012 дата публикации

Optical sensor and display apparatus

Номер: US20120091321A1
Автор: Christopher Brown, Kohei Tanaka
Принадлежит: Sharp Corp

Provided are an optical sensor having a wider dynamic range with reduced temperature dependence, and a display apparatus in which these optical sensors are used. An optical sensor includes an accumulation node (INT); a reset signal line (RST); a readout signal line (RWS); a photodiode (D 1 ) (photodetecting element); a photodiode (D 2 ) (reference element) that has a light-shielding layer; a thin-film transistor (M 1 ) (first switching element) that outputs a potential of the accumulation node (INT) in response to the readout signal during a sensing period; and a thin-film transistor (M 2 ) (second switching element) that is provided between the accumulation node (INT) and the photodiode (D 2 ), and that electrically separates the accumulation node (INT) from the photodiode (D 2 ) when the potential of the accumulation node (INT) upon supply of the readout signal is higher than a potential on a side of the photodiode (D 2 ) opposite to the accumulation node (INT).

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Номер записи: 57
19-04-2012 дата публикации

Processing method for a device having a bi-stable display and apparatus

Номер: US20120092243A1
Автор: Jian Chen, Sheng Hua Bao, Wei Jiang, Xin Ying Yang, Zhong Su
Принадлежит: International Business Machines Corp

A processing method for a device having a bi-stable display includes transforming a target page to be turned to; calculating overlap between the transformed target page and a current page; and determining whether the overlap of the transformed page complies with a predetermined criterion.

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Номер записи: 58
19-04-2012 дата публикации

Shift Register, Display-Driving Circuit, Displaying Panel, And Displaying Device

Номер: US20120092311A1
Автор: Hiroyuki Ohkawa, Makoto Yokoyama, Shige Furuta, Yasushi Sasaki, Yuhichiroh Murakami
Принадлежит: Sharp Corp

Disclosed is a shift register for use in a display driving circuit that simultaneously selects signal lines, including, in a stage thereof: a flip-flop including an initialization terminal; and a signal generating circuit that receives a simultaneous selection signal and that generates an output signal of the stage by use of an output of the flip-flop, wherein: the output signal of the stage becomes active due to an activation of the simultaneous selection signal so as to be active during a period of the simultaneous selection; the output of the flip-flop is non-active while the initialization terminal, a set terminal, and a reset terminal of the flip-flop; and the initialization terminal of the flip-flop receives the simultaneous selection signal. This shift register makes it possible to downsize various drivers.

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Номер записи: 59
19-04-2012 дата публикации

Liquid Crystal Display Apparatus

Номер: US20120092392A1
Автор: Ikuo Hiyama, Katsumi Kondo, Masaya Adachi, Sukekazu Aratani, Tsunenori Yamamoto
Принадлежит: Individual

A display apparatus and method having a pair of substrates, a display area which has a plurality of pixels, a lighting device which includes a plurality of light sources, a scanning driver which outputs scanning signals to the plurality of pixels, and an image driver which outputs image signals to the plurality of pixels. The lighting device illuminates the display area, the image signals are inputted to the plurality of pixels respectively, and each of the plurality of pixels controls a transmittance of an incident light from the lighting device after the image signals are inputted to the plurality of pixels respectively. The lighting device lights the plurality of light sources corresponding to the image signals inputted to the plurality of pixels after each of the plurality of pixels controls the transmittance.

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Номер записи: 60
19-04-2012 дата публикации

Graphics display system with video scaler

Номер: US20120093215A1
Автор: Alexander G. MacInnis, Chengfuh Jeffrey Tang, Greg A. Kranawetter, James T. Patterson, Xiaodong Xie
Принадлежит: Broadcom Corp

A method for processing video data includes performing by one or more processors and/or circuits in a video processing device, the one or more processors and/or circuits including a video scaler, a memory, and a scaler engine, functions including receiving a video image by the video processing device. The functions also include determining whether the video scaler requires less memory bandwidth to scale the video image before writing the video image to the memory or after reading the video image from the memory, and scaling the video image based on the determination. If the video scaler requires less memory bandwidth to scale the video image before writing the video image to the memory, performing by the one or more processors and/or circuits scaling of the video image in the video scaler using a video input clock of the video scaler to generate a first scaled video image.

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Номер записи: 61
26-04-2012 дата публикации

Display device and driving method thereof

Номер: US20120098738A1
Автор: Hajime Kimura, Yasunori Yoshida
Принадлежит: Semiconductor Energy Laboratory Co Ltd

It is an object of the present invention to provide a display device in which problems such as an increase of power consumption and increase of a load of when light is emitted are reduced by using a method for realizing pseudo impulsive driving by inserting an dark image, and a driving method thereof. A display device which displays a gray scale by dividing one frame period into a plurality of subframe periods, where one frame period is divided into at least a first subframe period and a second subframe period; and when luminance in the first subframe period to display the maximum gray scale is Lmax 1 and luminance in the second subframe period to display the maximum gray scale is Lmax 2 , (1/2) Lmax 2 <Lmax 1 <(9/10) Lmax 2 is satisfied in the one frame period, is provided.

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Номер записи: 62
26-04-2012 дата публикации

Computer with door-mounted electronics

Номер: US20120099265A1
Автор: David REBER
Принадлежит: Xplore Technologies Corp

A computer includes various features that improve its functionality and/or ease of use. A modular electronics cartridge that includes a piston seal and opposed-direction latches removably engages a cartridge bay of the computer. A high intensity touch-screen display and a high power processor are disposed in a sealed compartment of the computer, and a remote heat exchanger is used to cool the sealed compartment. An interface converter/adapter converts a standard mini-PCI Express slot into a specialized mini-PCI Express slot with voice capabilities. SIM and microSD card slots mount to a pivoting door on the computer such that opening the door provides easier access to the card slots.

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Номер записи: 63
03-05-2012 дата публикации

Display with emissive and reflective layers

Номер: US20120105384A1
Автор: Richard M. Clayton
Принадлежит: Symbol Technologies LLC

A display comprising includes a reflective panel 104 and a substantially transparent emissive panel 102 . The emissive panel is aligned and positioned over the reflective panel 104 . The emissive panel is operable to have an active pixel region 200 smaller than an active pixel region of the reflective panel 104 . A controller 108 operable to provide first information for display on the reflective panel 104 and second information for display on the emissive panel 102 , wherein the first and second information are coordinated to provide a single composite image to a user.

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Номер записи: 64
03-05-2012 дата публикации

Organic Light Emitting Display

Номер: US20120105420A1
Автор: Sang-Moo Choi
Принадлежит: Samsung Mobile Display Co Ltd

An organic light emitting display includes common coupling units at crossing regions of scan lines and data lines; first pixels at the crossing regions and positioned on an ith horizontal line to be coupled to the common coupling units positioned at the same crossing regions, wherein i is a positive integer; second pixels at the crossing regions and positioned on an (i+1)th horizontal line to be coupled to the common coupling units positioned at the same crossing regions; first control lines coupled to the first pixels; and second control lines coupled to the second pixels.

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Номер записи: 65
03-05-2012 дата публикации

Pixel driving circuit of an organic light emitting diode

Номер: US20120105421A1
Автор: Chien-Ming Nieh, Tsung-Ting Tsai
Принадлежит: AU OPTRONICS CORP

A pixel driving circuit of an organic light emitting diode (OLED) includes a first switch, a first capacitor, a transistor, a second switch, a second capacitor, and an OLED. The operation of the pixel driving circuit includes four stages of reset, threshold voltage compensation, data writing, and emitting. The pixel driving circuit compensates the threshold voltage of the transistor, so the driving current of the OLED is only related to the data voltage and the reference voltage.

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Номер записи: 66
03-05-2012 дата публикации

Light source system for a color flat panel display

Номер: US20120105504A1
Автор: James A. Robinson, Robert J. Lowles
Принадлежит: Research in Motion Ltd

A system for operating a color flat panel display (FPD) is provided that includes a color FPD, a light source, and a display processing device. The color FPD has an adjustable color depth and is configured to reflect ambient light. The light source transmits light through the bottom surface of the color FPD. The display processing device is coupled to the color FPD and decreases the color depth of the color FPD when the light source is activated and increases the color depth of the color FPD when the light source is turned off.

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Номер записи: 67
03-05-2012 дата публикации

Liquid crystal display device and potential setting method for the same

Номер: US20120105510A1
Автор: Masanobu Mizusaki, Takashi Katayama, Takeshi Noma, Youhei Nakanishi
Принадлежит: Sharp Corp

A liquid crystal display device includes source bus lines, gate bus lines intersecting with the source bus lines, pixels arranged in a matrix to correspond to intersections between the gate bus lines and the source bus lines, each of the pixels including a TFT, a pixel electrode, a common electrode, and a liquid crystal layer, and a potential control section for controlling the potential of the common electrode. The potential control section sets a voltage, obtained by reducing potential V cenf255 of the common electrode at which flicker is minimum in display of gray level as black display and gray level as white display alternately every pixel by a predetermined voltage, as center voltage V cen255 of the potential of the common electrode in display of gray level for all the pixels.

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Номер записи: 68
03-05-2012 дата публикации

Liquid crystal display

Номер: US20120105785A1
Автор: Ho-Kil OH, Hoon Kim, Hyung-Guel Kim, Jae-Hoon Jung, Jae-Jin Song, Joo-Seok Yeom, Ki-Chul Shin, Su-Jeong Kim, Yoon-jang KIM
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A liquid crystal display includes: a first substrate, a second substrate facing the first substrate, a liquid crystal layer interposed between the first substrate and the second substrate and including liquid crystal molecules, a gate line positioned on the first substrate, a data line positioned on the first substrate and crossing the gate line, a first thin film transistor and a second thin film transistor connected to the gate line and the data line, a third thin film transistor connected to the gate line and the second thin film transistor, a reference voltage line connected to the third thin film transistor, and a pixel electrode including a first subpixel electrode connected to the first thin film transistor and a second subpixel electrode connected to the second thin film transistor.

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Номер записи: 69
03-05-2012 дата публикации

Interface device and data processing method

Номер: US20120106918A1
Автор: Chien-Tsun Chen, Hsin-Hung Lin, yi-lin Zhuo
Принадлежит: Via Technologies Inc

An interface device coupled between a computer system and a display system. The interface device includes a control module. The control module receives data from the computer system, and determines whether to display the data on the display system in a projection mode or in a media rendering mode according to operation signals inputted by a user. In the projection mode, the data includes static pictures. The control module projects the static pictures onto the display system in sequence. In the media rendering mode, the data includes a video stream. The control module controls the video stream to be transmitted from the computer system to the display system and controls the playback of the video stream on the display device. When in the projection mode and when the operation signal indicates that switching to the media rendering mode is required, the media rendering mode is activated in the projection mode.

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Номер записи: 70
10-05-2012 дата публикации

Pwm signal generating circuit for dc-dc converter using dimming signal and led driving circuit having the same in direct digital dimming method

Номер: US20120112655A1
Автор: Beom-Seon Ryu, Chang-sik Lim
Принадлежит: MagnaChip Semiconductor Ltd

An LED driving circuit is provided. The LED driving circuit includes an input unit which receives an input dimming signal for driving an LED array, a PWM signal generating unit which extends an on-period of the input dimming signal to form an extended dimming signal, and generates a PWM signal using the extended dimming signal, a DC-DC converter which supplies output voltage to the LED array using the PWM signal, and an LED driving unit which drives the LED array using the input dimming signal.

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Номер записи: 71
10-05-2012 дата публикации

Liquid crystal display device and method for controlling display of liquid crystal display device

Номер: US20120112991A1
Автор: Hideki Ichioka, Katsuteru Hashimoto, Katsuya Otoi, Kohji Fujiwara
Принадлежит: Sharp Corp

An embodiment of a liquid crystal display device includes: a liquid crystal panel including pixels arranged in a pixel; and a backlight that irradiates it with light. In at least one example embodiment, the pixels included in the liquid crystal panel each include picture elements different in color. The picture elements are each provided with a color filter corresponding to the color of the picture element. The liquid crystal display device includes: an aperture ratio converting section that, to reduce optical cross talk, decreases an aperture ratio for inputted image data and outputs data of the aperture ratio; and a backlight data converting section that, to supplement the aperture ratio for the image data which is decreased by the aperture ratio converting section, converts data to increase a backlight luminance. This backlight luminance control prevents or reduces optical or electrical cross talk.

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Номер записи: 72
10-05-2012 дата публикации

Devices and methods for providing an enhanced monochromatic display

Номер: US20120113132A1
Автор: Raymond T. Page, Simon Jiang
Принадлежит: ARMSTEL Holding LLC

A method for grayscale display of a desired output shade comprises transmitting an enhanced grayscale input signal for the desired output shade to an enhanced grayscale engine. The input signal including a plurality of shade bits and a plurality of select bits. The method further comprises decoding the plurality of shade bits and the plurality of select bits to select an intermediate shade from a plurality of intermediate shades. The method further comprises forming an enhanced grayscale display. The method further comprises receiving the enhanced grayscale display signal from the enhanced grayscale engine and displaying an enhanced grayscale image on an output display. Responsive to a first user input, a standard grayscale display signal is selected. The standard grayscale display signal is received and a standard grayscale image is displayed on the output display.

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Номер записи: 73
10-05-2012 дата публикации

Display Device with Imaging Function and Method for Driving the Same

Номер: US20120113160A1
Автор: Yoshiyuki Kurokawa
Принадлежит: Semiconductor Energy Laboratory Co Ltd

To achieve desired display on a display surface and accurate image capture in a display device with an imaging function. A light source for display (a first light-emitting element) and a light source for image capture (a second light-emitting element) that does not adversely affect display when it is on are separately provided in the display device with an imaging function. In the display device, an image can be appropriately captured using the light source for image capture in a period during which display is performed using the light source for display. Consequently, desired display on the display surface and accurate image capture can be achieved in the display device.

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Номер записи: 74
10-05-2012 дата публикации

Display device and display method

Номер: US20120113319A1
Автор: Atsuhiro Chiba, Sho Sakamoto, Tetsuyuki Yoshida, Yoshihisa Sato, Yoshiki Okamoto
Принадлежит: Sony Corp

A display device includes: a display unit including plural display sections divided in a first direction and performing line sequential scanning in the first direction; and an interpolation picture generation unit generating an interpolation picture in accordance with a timing at which each display section is scanned based on supplied frame pictures, wherein the display unit displays the interpolation picture corresponding to the display section in each display section.

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Номер записи: 75
10-05-2012 дата публикации

Method for manufacturing liquid crystal display device

Номер: US20120113379A1
Автор: Kazunari Tomizawa, Tomohiko Mori, Yuichi Yoshida
Принадлежит: Sharp Corp

A liquid crystal display device ( 100 ) according to the present invention comprises the steps of: providing a liquid crystal display panel ( 200 ), which includes an active-matrix substrate, a counter substrate, and a vertical alignment liquid crystal layer interposed between the active-matrix substrate and the counter substrate; if an achromatic color should be represented, obtaining the chromaticity of the liquid crystal display panel ( 200 ) when viewed straight on with respect to each grayscale level and determining a range in which the chromaticity of the liquid crystal display panel ( 200 ) when viewed obliquely is adjustable by changing the luminances of respective blue subpixels belonging to the two pixels within their adjustable range; and setting the luminances of the blue subpixels so that the chromaticity of the liquid crystal display panel when viewed obliquely becomes as close to the chromaticity of the liquid crystal display panel when viewed straight on as possible within the adjustable range with respect to at least a part of the entire range of the grayscale levels.

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Номер записи: 76
17-05-2012 дата публикации

Display device

Номер: US20120120041A1
Автор: Makoto Kohno, Nobuyuki Mori, Seiichi Mizukoshi
Принадлежит: GLOBAL OLED TECHNOLOGY LLC

Display unevenness is suppressed. A display device includes pixels ( 22 ) arranged in matrix, each including a current-driven type light emitting element (EL) and a drive transistor (Tr 3 ) for supplying a current to the current-driven type light emitting element (EL). The current-driven type light emitting element (EL) is driven by dividing each frame period into a plurality of sub-frame periods for lighting time. The drive transistor is controlled under current write driving using two write currents having a ratio of 1:1/2 N and a sum of the two write currents.

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Номер записи: 77
17-05-2012 дата публикации

Liquid crystal display and global dimming control method thereof

Номер: US20120120089A1
Автор: Heumeil BAEK, Minchul Byun
Принадлежит: LG Display Co Ltd

A global dimming control method of a liquid crystal display for controlling a luminance of backlight depending on a displayed image includes calculating an average picture level (APL) of the displayed image, calculating the number of pixels of a chromatic region belonging to the displayed image when the APL is equal to or less than a previously determined first threshold value, comparing the number of pixels of the chromatic region with a previously determined second threshold value, calculating a gain value of the chromatic region when the number of pixels of the chromatic region is greater than the second threshold value, and multiplying the gain value by the APL to calculate an adjustment dimming control signal, and controlling the luminance of the backlight using a dimming value obtained based on the adjustment dimming control signal.

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Номер записи: 78
24-05-2012 дата публикации

Organic electroluminescent display apparatus

Номер: US20120127064A1
Автор: Fujio Kawano, Kiyofumi Sakaguchi, Kouji Ikeda, Noriyuki Shikina, Takanori Yamashita, Tatsuhito Goden
Принадлежит: Canon Inc

Provided is a display apparatus that can select either an “outdoor visibility mode” or a “wide viewing angle mode” or either a “power saving mode” or a “wide viewing angle mode” depending on a user scene; that can also select intermediate states between the two modes; and provide high displayed image quality. An organic electroluminescent display apparatus of the present invention includes a plurality of pixels, an organic electroluminescent element, a data line driver, a pixel circuit, and a gate line driver, in which each pixel includes two organic electroluminescent elements that emit light of the same color, an element with high light-collecting property is disposed over a light emission side of only one of the two organic electroluminescent elements, and units that make a difference in lighting times or drive currents between the two organic electroluminescent elements are included.

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Номер записи: 79
24-05-2012 дата публикации

Liquid Crystal Display and Driving Method Thereof

Номер: US20120127147A1
Автор: Jin-Wook Yang, Sang-Jae Yeo
Принадлежит: Samsung Mobile Display Co Ltd

A liquid crystal display having: a liquid crystal display panel comprising a plurality of pixels; a data driver applying a data voltage to a plurality of data lines connected to the plurality of pixels; an initial voltage driver applying an initial voltage to the plurality of data lines before the data voltage is applied; and a boost driver applying a boost voltage to a plurality of boost lines connected to the plurality of pixels and boosting voltages of the plurality of pixels to which the data voltage is applied. Crosstalk caused by noise generated in a boost line can be reduced by coupling with a data line, and an ALS driving scheme can be applied to a liquid crystal display having high resolution.

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Номер записи: 80
24-05-2012 дата публикации

Method for Compensating Data and Display Apparatus for Performing the Method

Номер: US20120127191A1
Автор: Bong-im Park, Byung-Kil Jeon, Nam-Gon Choi
Принадлежит: Individual

A method of compensating data uses a look-up table divided into a first area, a second area and a boundary area between the first and second areas defined by a first previous reference value, a second previous reference value greater than the first previous reference value, a first current reference value and a second current reference value less than the first current reference value. A compensation data of a current frame is generated based on to which one of the first, second and boundary areas grayscale data of previous and current frames belongs.

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Номер записи: 81
24-05-2012 дата публикации

Selection of foreground characteristics based on background

Номер: US20120127198A1
Автор: Sidhartha Gundavarapu
Принадлежит: Microsoft Corp

A text colorization system is described herein that automatically sets foreground text color based on one or more background colors over which the text is displayed. The text colorization system identifies a background color neighboring each pixel of a string of text. For each pixel region, the system selects a color to satisfy one or more colorization criteria. Next, the system sets the text color at each region based on the selected color. The system then displays the layered image to the user, such as through a computer display or mobile device display. Thus, the text colorization system provides readable text in the presence of layered graphics displays.

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Номер записи: 82
24-05-2012 дата публикации

Backlight module driving system and driving method thereof

Номер: US20120127212A1
Автор: Bi-Hsien Chen, Chien-Yang Chen, Chun-Chieh Chiu, Shin-Chang Lin, Tien-Yung Huang
Принадлежит: Chunghwa Picture Tubes Ltd

A backlight module driving system and a driving method thereof are applied to a Liquid Crystal Display (LCD). In the LCD, a timing controller obtains a three-dimensional (3D) image signal provided by a graphics processor, generates a Liquid Crystal (LC) driving control signal, and generates a corresponding light adjusting signal according to a data writing time and a Vertical Blanking Interval (VBI) time of the LC driving control signal. A backlight driver obtains and analyzes the light adjusting signal, so as to disable a backlight module during the data writing time, and enable the backlight module during the VBI time.

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Номер записи: 83
24-05-2012 дата публикации

Display device and electronic device using the same

Номер: US20120127215A1
Автор: Keitaro Yamashita
Принадлежит: Chimei Innolux Corp

A display device where a memory circuit is installed into each pixel without generating flicker, including a plurality of pixels arranged in a matrix, wherein each pixel has a light-transmissive element controlling the amount of transmissive light in response to a voltage difference between a first electrode and a second electrode, a memory circuit storing the voltage level of the first electrode, and a controller. In the case where the first electrode has a positive voltage level with respect to the second electrode at a refreshing timing, the controller makes the memory circuit store the voltage level of the first electrode, applies a first predetermined voltage to the second electrode to increase the voltage level of the first electrode by the first predetermined voltage, and discharges the first electrode so that the first electrode has a negative voltage level with respect to the second electrode.

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Номер записи: 84
31-05-2012 дата публикации

Method for driving cholesteric liquid crystal display device

Номер: US20120133625A1
Автор: Bao-Sian Ciou, Chun-Yu Shen, Huai-An Li, Sheng-Fa Liu, Yu-Hsien Chen
Принадлежит: Chunghwa Picture Tubes Ltd

A method for driving a cholesteric liquid crystal display device is disclosed. The cholesteric liquid crystal display device includes a plurality of pixels. The method includes steps below. In a first duration, a first square wave is provided for the pixels. The first square wave has an amplitude of a first value. In a second duration, a second square wave is provided for each one of the pixels according to a required gray level of each one of the pixels. The second square wave has an amplitude of a second value. The second value is different from the first value. The first square wave and the second square wave are continuously provided. The method for driving the cholesteric liquid crystal display device according to the present invention is capable of displaying a motion picture and decreasing driving voltages.

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Номер записи: 85
31-05-2012 дата публикации

Selective compensation for age-related non uniformities in display

Номер: US20120133835A1
Автор: Franciscus Hendrikus Van Heesch, Michiel Adriaanszoon Klompenhouwer, Oleg Belik
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

A video signal compensator ( 10, 70, 80, 290 ) for selectively compensating for age-related non-uniformities in a display, receives an indication of motion or detects motion in an incoming video signal, and receives or determines an indication of amounts of compensation for the different parts of the display needed to compensate for the non-uniformities. The compensator selectively applies the needed amount of compensation to the video signal according to the indicated motion to apply less of the needed compensation where there is less motion, over at least some of the range of possible motions. This can reduce the drive levels at least where the non uniformities are less visible because of the motion in the video. The reduced drive levels can lead to less ageing and thus prolong display life. The amounts of needed compensation can be predicted or determined from measured outputs of pixels of the display.

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Номер записи: 86
07-06-2012 дата публикации

Driver device, backlight unit and image display device

Номер: US20120139823A1
Автор: Kohji Fujiwara, Takayuki Murai
Принадлежит: Sharp Corp

A backlight unit according to the present invention includes a plurality of LED drivers ( 5 a ) to ( 5 i ), an LED controller ( 61 ) that generates a control information group in which lighting control information for selected LED drivers is arranged and a cascade line that connects the LED drivers in cascade. The LED controller ( 61 ) enables the selected LED drivers ( 5 ), and feeds the control information group to the cascade line, and the enabled LED drivers ( 5 ) perform an operation (acquisition operation) of acquiring the lighting control information on itself among the control information group whereas the LED drivers ( 5 ) that are not enabled do not perform the acquisition operation. According to the present invention, it is possible to reduce the performance of unnecessary operations of the backlight unit. The present invention can be utilized in a liquid crystal display device that uses LEDs as a light source of backlight.

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Номер записи: 87
07-06-2012 дата публикации

Electrochromic display device

Номер: US20120139825A1
Автор: Akishige Murakami, Hiroyuki Takahashi, Koh Fujimura, Shigenobu Hirano, Tohru Yashiro, Yoshihisa Naijo, Yoshinori Okada
Принадлежит: Ricoh Co Ltd

An electrochromic display device includes a display substrate, a counter substrate facing the display substrate, counter electrodes arranged on the counter substrate, an electrolyte layer arranged between the display substrate and the counter electrodes, display electrodes separately arranged from one another between the display substrate and the counter electrodes, electrochromic layers to develop or reduce a color by redox reactions, the electrochromic layers being formed on the respective display electrodes arranged such that the electrochromic layers face the set of the counter electrodes, a voltage applying unit to select one of the display electrodes to connect the selected display electrode and the counter electrodes to apply a voltage between the connected display electrode and counter electrodes, a disconnecting unit to disconnect the unselected display electrodes from the counter electrodes, and an interelectrode connecting unit to connect the display electrodes.

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Номер записи: 88
07-06-2012 дата публикации

Gate drive circuit and display apparatus having the same

Номер: US20120139883A1
Автор: Jae-Hoon Lee, Jun-Yong Song, Whee-won LEE, You-Mee HYUN, Young-Su Kim, Yu-Han Bae
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A gate drive circuit includes a shift register in which plural stages are cascade-connected to each other. In an n-th stage, a pull-up part outputs a high voltage of a clock signal to an output node as a high voltage of an n-th gate signal in response to a high voltage on a first node. A pull-down part pulls the high voltage of the n-th gate signal down to a first low voltage in response to an (n+1)th carry signal. A discharging part discharges the first node to a second low voltage level lower than the first low voltage level in response to the (n+1)th carry signal. A carry part outputs the high voltage of the clock signal as an n-th carry signal (mirroring the n-th gate signal) in response to a high voltage on the first node.

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Номер записи: 89
07-06-2012 дата публикации

Electrophoretic display apparatus, method for driving the same, and method for measuring image stability thereof

Номер: US20120139963A1
Автор: Seunghoon Lee, Youngjo Ko
Принадлежит: Individual

Disclosed are an electrophoretic display apparatus and a method for driving the same, which facilitate minimization of the flickering of the screen as well as minimization of the unintended gray scale transition caused by the neighboring cells. Disclosed also is a method for measuring the image stability of an electrophoretic display apparatus which allows a user to visually recognize any unintended gray scale transition that may occur after a predetermined time passes without a data voltage supplied and to identify whether the degree of the unintended gray scale transition exceeds an allowable range. When an image switching is performed, no data voltage is supplied to a first cell to be maintained with a first gray scale without gray scale transition, and a data voltage of a predetermined waveform is supplied to a second cell to be maintained with a second gray scale without gray scale transition.

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Номер записи: 90
07-06-2012 дата публикации

Image display apparatus and control method for controlling the same

Номер: US20120140145A1
Автор: Nobuyuki Hanamoto
Принадлежит: Canon Inc

Disclosed is an image display apparatus comprising pixels each one of which is composed of three subpixels, wherein each pair of the two subpixels is provided with a light source 101; a first polarizing filter 102 which extracts a component of linearly polarized light from a light of the light source; a liquid crystal 103 which rotates a polarization direction of the linearly polarized light; a polarizing filter 104 A which is provided corresponding to one of the subpixels 105 A and which extracts a polarized light component in a horizontal direction; and a polarizing filter 104 B which is provided corresponding to the other of the subpixels 105 B and which extracts a polarized light component in a vertical direction; the image display apparatus further comprising a control unit 200 which controls the output light amount of the light source 101 and an angle of orientation of the liquid crystal 103.

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Номер записи: 91
14-06-2012 дата публикации

Self-Refresh Panel Time Synchronization

Номер: US20120146968A1
Автор: David Glen
Принадлежит: ATI TECHNOLOGIES ULC

In an embodiment, a method in a device of controlling a display is provided. The method includes transmitting a heartbeat signal in a self-refresh state. The heartbeat signal is configured to be used by a display to remain in sync with the device while the device is in the self-refresh state.

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Номер записи: 92
14-06-2012 дата публикации

Device and method for tuning color temperature in digital display device

Номер: US20120147061A1
Автор: Kyong-Ho LIM
Принадлежит: LG Display Co Ltd

The present invention relates to method and device for tuning a color temperature in a digital display device, in which variation of color temperatures and color feelings between gradients is reduced for improving a picture quality.

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Номер записи: 93
14-06-2012 дата публикации

Display device

Номер: US20120147068A1
Автор: Kenji Gondo
Принадлежит: Kyocera Display Corp

A display device includes an illuminance sensor for detecting an illuminance in a surrounding environment, an input average luminance detection circuit for detecting an average luminance of input images, a frame insertion control circuit for producing a gray image frame and inserting the produced gray image frame into between an input image frame and its subsequently input image frame input, and an insertion luminance level generation circuit for determining a luminance of the gray image frame according to the illuminance detected by the illuminance sensor and the average luminance of the input images detected by the input average luminance detection circuit.

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Номер записи: 94
14-06-2012 дата публикации

Methods and systems for creating augmented reality for color blindness

Номер: US20120147163A1
Автор: Dan Kaminsky
Принадлежит: Dan Kaminsky Holdings LLC

In an embodiment, an image is provided to an augmented reality application program. The program detects colors and modifies the image. In particular, the program may analyze an image of a scene provided by a camera of a portable electronic device that may be problematic for color challenged users. It then modifies one or more colors such that a color challenged user viewing the altered image may perceive the scene colors as the colors would be perceived by a non-color challenged user viewing the scene.

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Номер записи: 95
14-06-2012 дата публикации

Liquid crystal display and scanning backlight driving method thereof

Номер: US20120147291A1
Автор: Bogun Seo
Принадлежит: LG Display Co Ltd

A liquid crystal display includes a liquid crystal display panel displaying modulated data based on a frame frequency, light sources generating light to be irradiated into the liquid crystal display panel, a scanning backlight controller calculating a turn-on duty ratio of a pulse width modulation (PWM) signal for controlling turn-on and turn-off operations of the light sources, and a light source driver. The light source driver synchronizes a frequency of the PWM signal with the frame frequency or with a frequency, that is faster than two times the frame frequency, based on the result of a comparison between the turn-on duty ratio of the PWM signal and a previously determined critical value, and then sequentially drives the light sources along a data scanning direction of the liquid crystal display panel.

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Номер записи: 96
14-06-2012 дата публикации

Rescue circuit of display panel and rescue method thereof

Номер: US20120147311A1
Автор: Chenghung Chen, Chengming He
Принадлежит: Shenzhen China Star Optoelectronics Technology Co Ltd

The present invention discloses a rescue circuit of display panel and a rescue method thereof. The rescue circuit includes an amplifier, a first conductive line, a second conductive line, and a third conductive line. The amplifier has an input end and an output end. The first conductive line and the second conductive line intersect and are isolated from signal input terminals of the plurality of signal lines. The first conductive line is electrically connected to the input end and the second conductive line is electrically connected through an electrical resistor to the output end. The third conductive line intersects and is isolated from signal distal ends of the signal lines and is electrically connected to the output end. The rescue method includes performing a welding operation and performing a cutting operation. With such a rescue, a broken signal line may effectively overcome the problem of weak line with the electrical resistor connected to the second conductive line.

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Номер записи: 97
21-06-2012 дата публикации

Display Device

Номер: US20120153293A1
Автор: Hajime Kimura, Jun Koyama
Принадлежит: Semiconductor Energy Laboratory Co Ltd

There is provided an active matrix EL display device that can display a clear multi gray-scale color display to reduce the shift in the potential caused by the potential drop due to the wiring resistance of a power source supply line, in order to decrease the unevenness in a display region. A plurality of drawing out ports of the power source supply line are arranged. Further, in the wiring resistance between the external input terminal and the pixel portion power source supply line, potential compensation is performed by supplying potential to the power source supply line by a feedback amplifier. Further, in addition to above structure, the power source supply line may be arranged in a matrix.

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Номер записи: 98
21-06-2012 дата публикации

Reference voltage generating circuit and led driver circuit having the same therein

Номер: US20120153848A1
Автор: Chang-sik Lim, Du-Su Shin, Shane Baik
Принадлежит: MagnaChip Semiconductor Ltd

A reference voltage generating circuit used for a light-emitting diode (LED) driver circuit and a light-emitting diode (LED) driver circuit are provided. A reference voltage generating circuit used for a light-emitting diode (LED) driver circuit includes a voltage measurer configured to sequentially measure feedback voltages of a plurality of LED arrays, the LED arrays being connected to one another in parallel, a quantizer configured to search for one of the plurality of LED arrays having a lowest feedback voltage of the measured feedback voltages, a comparator configured to compare an output of the voltage measurer with a preset comparison voltage to generate a reference voltage, and a timing controller configured to control the comparator to output the generated reference voltage corresponding to the one of the plurality of LED arrays.

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Номер записи: 99
21-06-2012 дата публикации

Systems and methods for dynamic power management for use with a video display device

Номер: US20120153861A1
Автор: Barry Concklin, Daryl Chamberlin, Dimitrios Katsis, Peter J. Mole
Принадлежит: INTERSIL AMERICAS LLC

Embodiments of the present invention relate to methods and circuits for use with a system including a light emitting element (e.g., a laser diode or light emitting diode) that is driven by a current produced by a current output digital-to-analog converter (DAC), wherein the light emitting element or the DAC is powered by a supply voltage produced by a voltage supply. In accordance with an embodiment, a measure indicative of a voltage at an output of the DAC is obtained, wherein the voltage at the output of the DAC is indicative of a voltage headroom available for the DAC. The measure indicative of the voltage at the output of the DAC is compared to one or more predetermined references, and the supply voltage is controlled based on the comparison(s).

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Номер записи: 100