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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 58. Отображено 58.
17-04-2014 дата публикации

Active Stylus Communication And Position System

Номер: US20140104188A1
Автор: Vemund Kval Bakken, Izhar Bentov, Vivek Pant, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK
Принадлежит:

A method of one embodiment includes generating, by a touch-sensing device, a first signal comprising information identifying a first electrode line of an electrode array of the touch-sensing device, the first signal having a first strength. The first electrode sends the first signal to a stylus, which receives the first signal, the first signal having a received strength. The stylus sends a second signal comprising information based on the received first signal, and the touch-sensing device receives the second signal. A position of the stylus is determined based at least in part on the information identifying the first electrode line and the received strength of the first signal. 1. A method comprising:generating, by a touch-sensing device, a first signal comprising information identifying a first electrode line of an electrode array of the touch-sensing device, the first signal having a first strength;sending, by the first electrode line, the first signal to a stylus;receiving, by the stylus, the first signal, the first signal having a received strength;sending, by the stylus, a second signal comprising information based on the received first signal;receiving, by the touch-sensing device, the second signal;determining a position of the stylus based at least in part on the information identifying the first electrode line and the received strength of the first signal.2. A method comprising:generating, by a touch-sensing device, a first signal comprising information identifying a first electrode line of an electrode array of the touch-sensing device, the first signal having a first strength;sending, by the first electrode line, the first signal to a stylus;receiving, by the touch-sensing device, a received signal from the stylus, the received signal based at least in part on the information identifying the first electrode line and a strength at which the first signal was received by the stylus;determining a position of the stylus based at least in part on the ...

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Номер записи: 1
01-05-2018 дата публикации

Active stylus communication and position system

Номер: US0009958966B2
Автор: Vemund Kval Bakken, Izhar Bentov, Vivek Pant, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK, Bakken, Vemund Kval, Bentov, Izhar, Pant, Vivek
Принадлежит: Atmel Corporation, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK, ATMEL CORP, Bakken Vemund Kval, Bentov Izhar, Pant Vivek

A method of one embodiment includes generating, by a touch-sensing device, a first signal comprising information identifying a first electrode line of an electrode array of the touch-sensing device, the first signal having a first strength. The first electrode sends the first signal to a stylus, which receives the first signal, the first signal having a received strength. The stylus sends a second signal comprising information based on the received first signal, and the touch-sensing device receives the second signal. A position of the stylus is determined based at least in part on the information identifying the first electrode line and the received strength of the first signal.

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Номер записи: 2
24-01-2023 дата публикации

Pixelated self-capacitance water rejection

Номер: US0011561647B2
Автор: Yingxuan Li, Weijun Yao, Vivek Pant, Martin Paul Grunthaner, Marduke Yousefpor, Sumant Ranganathan
Принадлежит: Apple Inc.

A touch sensor panel is disclosed. In some examples, the touch sensor panel comprises a plurality of touch node electrodes. In some examples, the touch sensor panel comprises a touch controller configured to drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image, drive and sense the plurality of touch node electrodes in a second configuration, different from the fully bootstrapped configuration, to obtain a second touch image, the second touch image including an effect of water on the touch sensor panel, and determine a final touch image based on the fully bootstrapped touch image and the second touch image, the final touch image not including the effect of the water on the touch sensor panel. In some examples, the second configuration comprises a mutual capacitance configuration. In some examples, the second configuration comprises a partially bootstrapped configuration.

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Номер записи: 3
24-10-2013 дата публикации

Self-Capacitance Measurement

Номер: US20130278538A1
Автор: Samuel Brunet, Bernard J. Hermes, Trond Jarle Pedersen, Luben Hristov Hristov, Shahrooz Shahparnia, Vivek Pant
Принадлежит:

In one embodiment, a method includes modifying an amount of charge of a capacitance of a touch sensor. The modified amount of charge resulting in a voltage at the capacitance being a first pre-determined voltage level. The method also includes applying a first pre-determined amount of charge to the capacitance. The application of the first pre-determined amount of charge to the capacitance modifying the voltage at the capacitance from the first pre-determined voltage level to a first charging voltage level. The method also includes determining a first difference between the first charging voltage level and a reference voltage level; and determining whether a touch input to the touch sensor has occurred based on the first difference. 1. A method comprising:modifying an amount of charge of a capacitance of a touch sensor, the modified amount of charge resulting in a voltage at the capacitance being a first pre-determined voltage level;applying charge to an electrode associated with the capacitance resulting, after a pre-determined amount of time, in a first pre-determined amount of charge on the capacitance, the application of the first pre-determined amount of charge to on the capacitance modifying the voltage at the capacitance from the first pre-determined voltage level to a first charging voltage level;determining a first difference between the first charging voltage level resulting from the first pre-determined amount of charge and a reference voltage level; anddetermining whether a touch input to the touch sensor has occurred based on the first difference.2. The method of claim 1 , further comprising:modifying the amount of charge of the capacitance, the modified amount of charge resulting in the voltage at the capacitance being a second pre-determined voltage level;applying a second pre-determined amount of charge to the capacitance, the application of the second pre-determined amount of charge to the capacitance modifying the voltage at the capacitance from ...

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Номер записи: 4
03-07-2018 дата публикации

Touch sensor with simultaneously driven drive electrodes

Номер: US0010013096B2
Автор: Vemund Kval Bakken, Izhar Bentov, Vivek Pant, Shahrooz Shahparnia, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK, SHAHPARNIA SHAHROOZ, Bakken, Vemund Kval, Bentov, Izhar, Pant, Vivek, Shahparnia, Shahrooz
Принадлежит: Atmel Corporation, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK, SHAHPARNIA SHAHROOZ, ATMEL CORP, Bakken Vemund Kval, Bentov Izhar, Pant Vivek, Shahparnia Shahrooz

In one embodiment, a method comprises generating, by a controller, a plurality of drive signals. The method further includes simultaneously transmitting, by the controller, the plurality of drive signals to a plurality of drive electrodes disposed on a touch sensor. The method further includes sensing a sense electrode of a plurality of sense electrodes disposed on the touch sensor. The sensing comprises measuring, for each drive electrode of the plurality of drive electrodes, at least one value indicative of a capacitance between the sense electrode and the drive electrode.

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Номер записи: 5
16-08-2012 дата публикации

INPUT DEVICE INTERFERENCE DETERMINATION

Номер: US20120206154A1
Автор: Vivek Pant, Farzaneh Shahrokhi, Shahrooz Shahparnia, PANT VIVEK, SHAHROKHI FARZANEH, SHAHPARNIA SHAHROOZ
Принадлежит:

An interference determining circuit for a capacitive sensor device comprises an amplifier, absolute differential circuitry, and comparator circuitry. The amplifier is configured for receiving a reference voltage at a first input and for receiving a resulting signal at a second input. The resulting signal is from a sensor electrode of the capacitive sensor device. The absolute differential circuitry is coupled with an output of the amplifier and configured for outputting a difference signal. The difference signal represents an absolute differential between currents utilized in the amplifier. The comparator circuitry is coupled with the absolute differential circuitry and configured for generating a non-linearity indication based on a comparison of the difference signal with at least one reference signal. 1. An interference determining circuit for a capacitive sensor device , said circuit comprising:an amplifier configured for receiving a reference voltage at a first input and for receiving a resulting signal at a second input, wherein the resulting signal is from a sensor electrode of said capacitive sensor device;absolute differential circuitry coupled with an output of said amplifier and configured for outputting a difference signal, wherein said difference signal represents an absolute differential between currents utilized in said amplifier; andcomparator circuitry coupled with said absolute differential circuitry and configured for generating a non-linearity indication based on a comparison of said difference signal with at least one reference signal.2. The circuit of claim 1 , further comprising:control logic coupled with said comparator circuitry and configured to selectively accept or reject said resulting signal based upon said non-linearity indication.3. The circuit of claim 1 , further comprising:control logic coupled with said comparator circuitry and configured to make a change based upon said non-linearity indication, wherein said change is selected ...

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Номер записи: 6
07-04-2020 дата публикации

Method for stylus touch-down and lift-off noise mitigation

Номер: US0010613643B2
Автор: Shahrooz Shahparnia, Vivek Pant, SHAHPARNIA SHAHROOZ, PANT VIVEK, Shahparnia, Shahrooz, Pant, Vivek
Принадлежит: Apple Inc., APPLE INC

Active styli, methods and non-transitory computer readable storage media can be used for mitigating noise coupling from an active stylus to a touch sensing system. An active stylus can include a force sensor that can be used to detect stylus touch-down and lift-off events. Based on a touch-down and lift-off events, the stylus can generate stimulation signals and ramp up or ramp down the amplitude of the stimulation signals. Additionally or alternatively, an active stylus can receive information to synchronize the active stylus with a touch-sensitive device. Based on the information, the stylus can synchronize generation of stimulation signals with the stylus scan performed by the touch-sensitive device. The stimulation signals can be ramped up during a guard band period before a stylus scan and can be ramped down during a guard band period after the stylus scan.

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Номер записи: 7
02-05-2013 дата публикации

Pulse- Or Frame-Based Communication Using Active Stylus

Номер: US20130106722A1
Автор: Shahrooz Shahparnia, Vivek Pant, Esat Yilmaz, Vemund Kval Bakken, Kishore Sundara-Rajan, John Stanley Dubery, Martin John Simmons, Sherif Hanna
Принадлежит:

In one embodiment, a method includes receiving sensor data from one or more sensors in or on a stylus, the stylus including one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for wirelessly transmitting signals to a device through a touch sensor of the device. The method includes generating a carrier signal and modulating the carrier signal to communicate the sensor data and wirelessly transmitting from the stylus to the device the carrier signal as modulated through the touch sensor of the device. 1. A method comprising:receiving sensor data from one or more sensors in or on a stylus, the stylus comprising one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for wirelessly transmitting signals to a device through a touch sensor of the device;generating a carrier signal;modulating the carrier signal to communicate the sensor data; andwirelessly transmitting from the stylus to the device the carrier signal as modulated through the touch sensor of the device.2. The method of claim 1 , wherein the logic is operable to modulate the carrier signal to communicate the sensor data using:amplitude modulation;frequency modulation; orphase modulation.3. The method of claim 1 , wherein the carrier signal is generated by either the stylus or a controller of the device.4. The method of claim 1 , wherein the carrier signal is modulated by either the stylus or a controller of the device.5. The method of claim 1 , wherein the sensor data is analog.6. The method of claim 1 , wherein the sensor data is digital.7. The method of claim 1 , wherein the carrier signal as modulated is transmitted in a single electric pulse.8. The method of claim 1 , wherein the carrier signal as modulated is transmitted in a plurality of electric pulses.9. The method of claim 1 , further comprising:comparing the carrier signal as modulated to a second modulated carrier signal to obtain the sensor data.10. The ...

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Номер записи: 8
17-11-2016 дата публикации

Touch Sensor Scanning for Display-Embedded Touch Sensors

Номер: US20160334928A1
Автор: Andrew Fuller, Samuel Brunet, Christopher Hill, Vivek Pant, Grahame Reynolds, FULLER ANDREW, BRUNET SAMUEL, HILL CHRISTOPHER, PANT VIVEK, REYNOLDS GRAHAME, Fuller Andrew, Brunet Samuel, Hill Christopher, Pant Vivek, Reynolds Grahame
Принадлежит:

In one embodiment, a method includes receiving a request to refresh a display for a refresh period, wherein the display is coupled to a touch sensor operable to detect touch input at the display. During a first phase of the refresh period, a first portion of the display is refreshed while the touch sensor a second portion and a third portion of the display is activated. The second portion and the third portion are a half screen distance apart. During a second phase of the refresh period, the second portion of the display is refreshed while the touch sensor at a fourth portion and a fifth portion of the display is activated. The fourth portion and the fifth portion are a half screen distance apart. 121-. (canceled)22. A method comprising:receiving a request to refresh a display for a refresh period, wherein the display is coupled to a touch sensor operable to detect touch input at the display; refreshing a first portion of the display; and', 'while refreshing the first portion of the display, activating the touch sensor at a second portion and a third portion of the display, the second portion and the third portion being a half screen distance apart; and, 'during a first phase of the refresh period refreshing the second portion of the display; and', 'while refreshing the second portion of the display, activating the touch sensor at a fourth portion and a fifth portion of the display, the fourth portion and the fifth portion being a half screen distance apart., 'during a second phase of the refresh period23. The method of claim 22 , wherein the second portion of the display adjoins the first portion of the display.24. The method of claim 22 , wherein the refresh period of the display is approximately 0.0167 seconds.25. The method of claim 22 , wherein:an area of each of the first portion, the second portion, the third portion, the fourth portion, and the fifth portion is approximately one fourth of the display; andthe fifth portion of the display is the same as the ...

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Номер записи: 9
21-06-2016 дата публикации

Self-capacitance measurement

Номер: US0009372582B2
Автор: Samuel Brunet, Bernard J. Hermes, Trond Jarle Pedersen, Luben Hristov Hristov, Shahrooz Shahparnia, Vivek Pant, BRUNET SAMUEL, HERMES BERNARD J, PEDERSEN TROND JARLE, HRISTOV LUBEN HRISTOV, SHAHPARNIA SHAHROOZ, PANT VIVEK, HERMES BERNARD J.
Принадлежит: Atmel Corporation, BRUNET SAMUEL, HERMES BERNARD J, PEDERSEN TROND JARLE, HRISTOV LUBEN HRISTOV, SHAHPARNIA SHAHROOZ, PANT VIVEK, ATMEL CORP, HERMES BERNARD J., ATMEL CORPORATION

In one embodiment, a method includes modifying an amount of charge of a capacitance of a touch sensor. The modified amount of charge resulting in a voltage at the capacitance being a first pre-determined voltage level. The method also includes applying a first pre-determined amount of charge to the capacitance. The application of the first pre-determined amount of charge to the capacitance modifying the voltage at the capacitance from the first pre-determined voltage level to a first charging voltage level. The method also includes determining a first difference between the first charging voltage level and a reference voltage level; and determining whether a touch input to the touch sensor has occurred based on the first difference.

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Номер записи: 10
28-08-2018 дата публикации

Coarse scan and targeted active mode scan for touch and stylus

Номер: US0010061449B2
Автор: Vivek Pant, Shahrooz Shahparnia, Marduke Yousefpor, Christoph H. Krah, PANT VIVEK, SHAHPARNIA SHAHROOZ, YOUSEFPOR MARDUKE, KRAH CHRISTOPH H, Pant, Vivek, Shahparnia, Shahrooz, Yousefpor, Marduke, Krah, Christoph H.
Принадлежит: Apple Inc., APPLE INC

Power consumption of touch sensing operations for touch sensitive devices can be reduced by implementing a coarse scan (e.g., banked common mode scan) to coarsely detect the presence or absence of an object touching or proximate to a touch sensor panel and the results of the coarse scan can be used to dynamically adjust the operation of the touch sensitive device to perform or not perform a fine scan (e.g., targeted active mode scan). In some examples, the results of the coarse scan can be used to program a touch controller for the next touch sensing frame to idle when no touch event is detected or to perform a fine scan when one or more touch events are detected. In some examples, the results of the coarse scan can be used to abort a scheduled fine scan during the current touch sensing frame when no touch event is detected.

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Номер записи: 11
24-07-2018 дата публикации

Active stylus with a parallel communication channel

Номер: US0010031590B2
Автор: Vemund Kval Bakken, Izhar Bentov, Vivek Pant, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK, Bakken, Vemund Kval, Bentov, Izhar, Pant, Vivek
Принадлежит: Atmel Corporation, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK, ATMEL CORP, Bakken Vemund Kval, Bentov Izhar, Pant Vivek

A method of one embodiment includes generating, by a stylus, a composite signal. The composite signal includes a first signal having a first frequency, the first signal being used by a touch-sensing device to determine a position of the stylus relative to the touch-sensing device, and a second signal having a second frequency. The second signal may include status information such as an amount of force exerted on the stylus, battery information, orientation information, information indicating whether the stylus is within a threshold distance of the touch-sensing device, information indicating a status of a button of the stylus, and/or information indicating input from a user of the stylus. Furthermore, the second frequency is higher than the first frequency. The stylus sends the composite signal to the touch-sensing device, and an electrode array of the touch-sensing device may receive the composite signal. The touch-sensing device may determine a position of the stylus by processing the composite signal and may also determine the status information by processing the composite signal.

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Номер записи: 12
18-05-2021 дата публикации

Segmented force sensors for wearable devices

Номер: US0011009949B1
Автор: John G. Elias, Ray L. Chang, Moshe H. Malkin, Vivek Pant, ELIAS JOHN G, CHANG RAY L, MALKIN MOSHE H, PANT VIVEK, Elias, John G., Chang, Ray L., Malkin, Moshe H., Pant, Vivek
Принадлежит: Apple Inc., APPLE INC

A wearable electronic device comprises a multi-segment force sensor and a signal aggregator. The sensor comprises at least a first segment and a second segment connected to a flexible substrate material. A first portion of the substrate material (to which the first segment is attached) and a second portion of the substrate material (to which the second segment is attached) collectively wrap at least partially around a portion of an individual's body. The signal aggregator receives respective signals indicative of forces applied by an individual to the segments, and causes a representation of the respective signals to be transmitted to an application processing engine.

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Номер записи: 13
12-11-2019 дата публикации

Position-based stylus communication

Номер: US0010474277B2
Автор: Vivek Pant, Moshe Malkin, Shahrooz Shahparnia, PANT VIVEK, MALKIN MOSHE, SHAHPARNIA SHAHROOZ, Pant, Vivek, Malkin, Moshe, Shahparnia, Shahrooz
Принадлежит: Apple Inc., APPLE INC

Position-based sensing methods and systems can be used to transmit data from an input device to a touch-sensitive device. For example, the touch sensing system may perform one or more coarse input device sub-scans to determine a coarse location of the input device. The coarse location can be used to select one or more touch sensors (or sensor channels) to sample for decoding data encoded in the stimulation signals from the input device. During one or more fine input device sub-scans, the touch sensing system can determine a fine location of the input device and decode the data from the input device sampled from the selected touch sensors (or sensor channels).

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Номер записи: 14
16-08-2012 дата публикации

INPUT DEVICE RECEIVER PATH AND TRANSMITTER PATH ERROR DIAGNOSIS

Номер: US20120207244A1
Автор: John Weinerth, Shahrooz Shahparnia, Vivek Pant, Joseph Kurth Reynolds, WEINERTH JOHN, SHAHPARNIA SHAHROOZ, PANT VIVEK, REYNOLDS JOSEPH KURTH
Принадлежит:

An input device comprises a processing system coupled with a plurality of receiver paths. The processing system comprises a first capacitor and a bypass switch. The first capacitor is configured to be selectively coupled with the plurality of receiver paths. The bypass switch is configured for bypassing the first capacitor. The processing system is configured to selectively couple a first receiver path of the plurality of receiver paths with the first capacitor; acquire a measurement of a first resulting signal from at least one of the first receiver path or a second receiver path of the plurality of receiver paths while the first receiver path is coupled with the first capacitor and while the bypass switch is not bypassing the first capacitor; and determine whether the first receiver path is ohmically coupled with the second receiver path based on the measurement of the first resulting signal. 1. An input device comprising:a plurality of receiver paths; and a first capacitor configured to be selectively coupled with said plurality of receiver paths; and', selectively couple a first receiver path of said. plurality of receiver paths with said first capacitor;', 'acquire a measurement of a first resulting signal from at least one of said first receiver path or a second receiver path of said plurality of receiver paths while said first receiver path is coupled with said first capacitor and while said bypass switch is not bypassing said first capacitor; and', 'determine whether said first receiver path is ohmically coupled with said second receiver path based on said measurement of said first resulting signal., 'a bypass switch configured for bypassing said first capacitor, wherein said processing system is configured to], 'a processing system coupled with said plurality of receiver paths, said processing system comprising2. The input device of claim 1 , wherein said processing system further comprises a second capacitor and a third capacitor configured to be ...

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Номер записи: 15
12-11-2013 дата публикации

Tuning algorithm for noise reduction in an active stylus

Номер: US0008581886B2
Автор: Vivek Pant, Trond Jarle Pedersen, Vemund Kval Bakken, Kishore Sundara-Rajan, PANT VIVEK, PEDERSEN TROND JARLE, BAKKEN VEMUND KVAL, SUNDARA-RAJAN KISHORE
Принадлежит: Atmel Corporation, PANT VIVEK, PEDERSEN TROND JARLE, BAKKEN VEMUND KVAL, SUNDARA-RAJAN KISHORE, ATMEL CORP, ATMEL CORPORATION

In one embodiment, a stylus receives a signal, the stylus being able to wirelessly transmit signals to and receive signals from a device, and the stylus having a plurality of electrodes disposed in a tip of the stylus. The stylus compares a first value of the signal to a first threshold and determines whether to start a timing period based at least in part on this comparison. If the timing period is started, the stylus compares a second value of the signal to a second threshold and determines whether to stop the timing period based at least in part on this second comparison. If the timing period is stopped, the stylus determines whether the duration of the timing period is within a pre-determined range of timing period values. If so, the stylus processes the signal.

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Номер записи: 16
26-05-2020 дата публикации

Coarse scan and targeted active mode scan for touch and stylus

Номер: US0010664113B2
Автор: Shahrooz Shahparnia, Vivek Pant, Marduke Yousefpor, Christoph H. Krah, SHAHPARNIA SHAHROOZ, PANT VIVEK, YOUSEFPOR MARDUKE, KRAH CHRISTOPH H, Shahparnia, Shahrooz, Pant, Vivek, Yousefpor, Marduke, Krah, Christoph H.
Принадлежит: Apple Inc., APPLE INC

Power consumption of touch sensing operations for touch sensitive devices can be reduced by implementing a coarse scan (e.g., banked common mode scan) to coarsely detect the presence or absence of an object touching or proximate to a touch sensor panel and the results of the coarse scan can be used to dynamically adjust the operation of the touch sensitive device to perform or not perform a fine scan (e.g., targeted active mode scan). In some examples, the results of the coarse scan can be used to program a touch controller for the next touch sensing frame to idle when no touch event is detected or to perform a fine scan when one or more touch events are detected. In some examples, the results of the coarse scan can be used to abort a scheduled fine scan during the current touch sensing frame when no touch event is detected.

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Номер записи: 17
17-04-2014 дата публикации

Active Stylus With A Parallel Communication Channel

Номер: US20140104186A1
Автор: Vemund Kval Bakken, Izhar Bentov, Vivek Pant, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK
Принадлежит:

A method of one embodiment includes generating, by a stylus, a composite signal. The composite signal includes a first signal having a first frequency, the first signal being used by a touch-sensing device to determine a position of the stylus relative to the touch-sensing device, and a second signal having a second frequency. The second signal may include status information such as an amount of force exerted on the stylus, battery information, orientation information, information indicating whether the stylus is within a threshold distance of the touch-sensing device, information indicating a status of a button of the stylus, and/or information indicating input from a user of the stylus. Furthermore, the second frequency is higher than the first frequency. The stylus sends the composite signal to the touch-sensing device, and an electrode array of the touch-sensing device may receive the composite signal. The touch-sensing device may determine a position of the stylus by processing the composite signal and may also determine the status information by processing the composite signal. 1. A method comprising: a first signal having a first frequency; and', 'a second signal having a second frequency, the second signal comprising information indicating an amount of force exerted on a portion of the stylus;, 'generating, by a stylus, a composite signal comprisingreceiving, by an electrode array of the touch-sensing device, the composite signal;determining, by the touch-sensing device, a position of the stylus by processing the composite signal; anddetermining, by the touch-sensing device, the information indicating the amount of force exerted on the portion of the stylus by processing the composite signal.2. The method of claim 1 , wherein the second signal further comprises at least one of:information indicating an orientation of the stylus;information indicating a status of a battery;information indicating whether a portion of the stylus is within a threshold distance ...

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Номер записи: 18
26-05-2016 дата публикации

Noise Reduction for Touch Sensor System With Active Stylus

Номер: US20160147319A1
Автор: Manu Agarwal, Shahrooz Shahparnia, Vivek Pant, AGARWAL MANU, SHAHPARNIA SHAHROOZ, PANT VIVEK
Принадлежит:

A touch sensor may overlap a display. A transparent shield layer that is grounded around its edges may be interposed between the display and the touch sensor to help prevent noise from display data lines from reaching the touch sensor. The data lines may extend along a first dimension. The touch sensor may have first elongated electrodes that extend along the first dimension and second elongated electrodes that extend along a second dimension that is perpendicular to the first dimension. The second electrodes may be interposed between the first electrodes and the data lines. Pen present electrodes may be used to gather pen present data associated with a stylus on the touch sensor. Adjacent noise sensors may collect noise data that is removed from the pen present data. 1. Apparatus that is responsive to input from a stylus , comprising:a touch sensor having edges and having a plurality of electrodes; andtouch sensor circuitry that processes signals from the plurality of electrodes, wherein the touch sensor circuitry obtains signal data from the plurality of electrodes including pen present data from pen present electrodes where the stylus is located on the touch sensor and noise data from noise electrodes adjacent to the pen present electrodes.2. The apparatus defined in wherein the touch sensor circuitry is configured to remove the noise data from the pen present data to produce noise-removed pen present data.3. The apparatus defined in wherein the touch sensor circuitry is configured to compute position data for the stylus based on the noise-removed pen present data.4. The apparatus defined in wherein the touch sensor circuitry includes front-end circuitry that obtains the signal data from the plurality of electrodes.5. The apparatus defined in wherein the touch sensor circuitry includes a processor that removes the noise data from the pen present data.6. The apparatus defined in wherein the pen present electrodes are formed from a set of at least three electrodes ...

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Номер записи: 19
13-01-2015 дата публикации

Pulse- or frame-based communication using active stylus

Номер: US0008933899B2
Автор: Shahrooz Shahparnia, Vivek Pant, Esat Yilmaz, Vemund Kval Bakken, Kishore Sundara-Rajan, John Stanley Dubery, Martin John Simmons, Sherif Hanna, SHAHPARNIA SHAHROOZ, PANT VIVEK, YILMAZ ESAT, BAKKEN VEMUND KVAL, SUNDARA-RAJAN KISHORE, DUBERY JOHN STANLEY, SIMMONS MARTIN JOHN, HANNA SHERIF
Принадлежит: Atmel Corporation, SHAHPARNIA SHAHROOZ, PANT VIVEK, YILMAZ ESAT, BAKKEN VEMUND KVAL, SUNDARA-RAJAN KISHORE, DUBERY JOHN STANLEY, SIMMONS MARTIN JOHN, HANNA SHERIF, ATMEL CORP, ATMEL CORPORATION

In one embodiment, a method includes receiving sensor data from one or more sensors in or on a stylus, the stylus including one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for wirelessly transmitting signals to a device through a touch sensor of the device. The method includes generating a carrier signal and modulating the carrier signal to communicate the sensor data and wirelessly transmitting from the stylus to the device the carrier signal as modulated through the touch sensor of the device.

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Номер записи: 20
14-07-2020 дата публикации

Pixelated self-capacitance water rejection

Номер: US0010712867B2
Автор: Yingxuan Li, Weijun Yao, Vivek Pant, Martin Paul Grunthaner, Marduke Yousefpor, Sumant Ranganathan, LI YINGXUAN, YAO WEIJUN, PANT VIVEK, GRUNTHANER MARTIN PAUL, YOUSEFPOR MARDUKE, RANGANATHAN SUMANT, Li, Yingxuan, Yao, Weijun, Pant, Vivek, Grunthaner, Martin Paul, Yousefpor, Marduke, Ranganathan, Sumant
Принадлежит: Apple Inc., APPLE INC

A touch sensor panel is disclosed. In some examples, the touch sensor panel comprises a plurality of touch node electrodes. In some examples, the touch sensor panel comprises a touch controller configured to drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image, drive and sense the plurality of touch node electrodes in a second configuration, different from the fully bootstrapped configuration, to obtain a second touch image, the second touch image including an effect of water on the touch sensor panel, and determine a final touch image based on the fully bootstrapped touch image and the second touch image, the final touch image not including the effect of the water on the touch sensor panel. In some examples, the second configuration comprises a mutual capacitance configuration. In some examples, the second configuration comprises a partially bootstrapped configuration.

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Номер записи: 21
17-04-2014 дата публикации

Stylus Position System

Номер: US20140104187A1
Автор: Vemund Kval Bakken, Izhar Bentov, Vivek Pant, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK
Принадлежит:

A system of one embodiment includes a touch-sensing device and a stylus. The touch sensing device includes an electrode array, which includes a plurality of electrode line pairs, and a controller. Each electrode line pair includes a first and second electrode line to send a first and second signal, respectively. The stylus includes a sensor to measure the first and second signals, a signal processor to determine position information, and a transmitter to send position information to the touch-sensing device. 1. A system comprising: an electrode array comprising a plurality of electrode line pairs, each electrode line pair comprising a first electrode line configured to generate a first signal and a second electrode line configured to generate a second signal;', 'a controller configured to control the electrode array;, 'a touch-sensing device comprising a sensor configured to measure the first signal and the second signal;', 'a signal processor configured to determine position information based at least on the first signal and second signal; and', 'a transmitter configured to send a signal comprising the position information to the touch sensing device., 'a stylus comprising2. The system of claim 1 , wherein the first signal comprises an in-phase signal claim 1 , and the second signal comprises a quadrature-phase signal.3. The system of claim 1 , wherein the sensor is configured to measure a first signal strength of the first signal and a second signal strength of the second signal claim 1 , and wherein the signal processor is configured to calculate the position information based at least on the difference between the first signal strength and the second signal strength.4. The system of claim 1 , wherein the plurality of electrode line pairs comprises a first electrode line pair oriented in a first direction and a second electrode line pair oriented in a second direction claim 1 , the first direction being different from the second direction.5. The system of claim 4 ...

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Номер записи: 22
06-03-2014 дата публикации

Tuning Algorithm for Noise Reduction in an Active Stylus

Номер: US20140062970A1
Автор: Vivek Pant, Trond Jarle Pedersen, Vemund Kval Bakken, Kishore Sundara-Rajan, PANT VIVEK, PEDERSEN TROND JARLE, BAKKEN VEMUND KVAL, SUNDARA-RAJAN KISHORE
Принадлежит:

In one embodiment, a stylus receives a signal, the stylus being able to wirelessly transmit signals to and receive signals from a device, and the stylus having a plurality of electrodes disposed in a tip of the stylus. The stylus compares a first value of the signal to a first threshold and determines whether to start a timing period based at least in part on this comparison. If the timing period is started, the stylus compares a second value of the signal to a second threshold and determines whether to stop the timing period based at least in part on this second comparison. If the timing period is stopped, the stylus determines whether the duration of the timing period is within a pre-determined range of timing period values. If so, the stylus processes the signal. 1. A method comprising:receiving a signal at a stylus, the stylus being operable to wirelessly transmit signals to and receive signals from a device, the stylus comprising a plurality of electrodes disposed in a tip of the stylus;comparing a first value of the signal to a first threshold;determining whether to start a timing period based at least in part on comparing the first value of the signal to the first threshold;if the timing period is started, comparing a second value of the signal to a second threshold;determining whether to stop the timing period based at least in part on comparing the second value of the signal to the second threshold;if the timing period is stopped, determining whether the duration of the timing period is within a pre-determined range of timing period values; andprocessing the signal if the duration of the timing period is within the pre-determined range of timing period values.2. The method of claim 1 , further comprising receiving a second signal at the stylus if the timing period is not started.3. The method of claim 1 , further comprising:comparing a third value of the signal to the second threshold if the timing period is not stopped; anddetermining whether to stop the ...

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Номер записи: 23
26-11-2019 дата публикации

Multi-chip touch architecture for scalability

Номер: US0010488992B2
Автор: Shahrooz Shahparnia, Vivek Pant, Christoph H. Krah, SHAHPARNIA SHAHROOZ, PANT VIVEK, KRAH CHRISTOPH H, Shahparnia, Shahrooz, Pant, Vivek, Krah, Christoph H.
Принадлежит: Apple Inc., APPLE INC

A multi-chip touch architecture for scalability can include one or more touch controller application specific integrated circuits (ASICs), and one or more switching circuits coupled between the one or more touch controller ASICs and the touch sensor panel. The number of touch controller ASICs and switching circuits can be scaled based on the size of the touch sensor panel. The touch controller ASICs can include an interface for data transfer between the touch controller ASICs to allow for parallel processing of an image of touch by more than one touch controller ASIC. The touch controller ASIC can also include a memory directly accessible by more than one processing circuit (e.g., hardware accelerators), and circuitry to dynamically adjust the coupling between portions (e.g., banks) of memory and inputs of the one or more processing circuits to minimize data transfer and improve processing speeds.

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Номер записи: 24
11-10-2016 дата публикации

Reduce stylus tip wobble when coupled to capacitive sensor

Номер: US0009465456B2
Автор: Vivek Pant, Shahrooz Shahparnia, John Greer Elias, PANT VIVEK, SHAHPARNIA SHAHROOZ, ELIAS JOHN GREER, Pant Vivek, Shahparnia Shahrooz, Elias John Greer
Принадлежит: Apple Inc., APPLE INC

Algorithms can be used to reduce stylus tip wobble for a stylus translating on a surface over and between electrodes of a touch sensor panel. In some examples, a first position estimate can be calculated using a first position calculation method and a second position estimate can be calculated using a second position calculation method. The position of the stylus can be determined based on a weighted combination of the first and second position estimates. In some examples, the first position estimate can be calculated using an even-point centroid of signal contributions from an even number of electrodes of a touch sensor panel and the second position estimate can be calculated using an odd-point centroid of signal contributions from an odd number of electrodes. In some examples, the weighting can be assigned based on a ratio of the two largest amplitude signals and based on a ratio of the second and third largest amplitude signals.

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Номер записи: 25
12-12-2017 дата публикации

Stylus position system

Номер: US0009841862B2
Автор: Vemund Kval Bakken, Izhar Bentov, Vivek Pant, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK, Bakken Vemund Kval, Bentov Izhar, Pant Vivek
Принадлежит: Atmel Corporation, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK, ATMEL CORP, Bakken Vemund Kval, Bentov Izhar, Pant Vivek

A system of one embodiment includes a touch-sensing device and a stylus. The touch sensing device includes an electrode array, which includes a plurality of electrode line pairs, and a controller. Each electrode line pair includes a first and second electrode line to send a first and second signal, respectively. The stylus includes a sensor to measure the first and second signals, a signal processor to determine position information, and a transmitter to send position information to the touch-sensing device. A method of another embodiment includes sending, by a first electrode line, a first signal having a first frequency. A second electrode line sends a second signal having a second frequency. A stylus receives the first and second signals. The stylus sends a response signal to the touch-sensing device based on the first and second signals. A position of the stylus is determined based on the first and second signals.

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Номер записи: 26
08-09-2020 дата публикации

Quasi-continuous-time sampling of discrete-time sampled signals

Номер: US0010768746B1
Автор: Vivek Pant, Sumant Ranganathan, Moshe Malkin
Принадлежит: Apple Inc.

Improved sensing can include modified sampling and/or processing to improve performance against noise due to environmental variations and interference. In some examples, improved interference rejection can be achieved by sampling a sensor multiple times during settled periods. In some examples, the excitation signal and sampling window can be dynamically adjusted to satisfy drift and/or interference specifications based on various operating conditions or the operating environment. In some examples, drift performance can be traded off to improve interference performance. In some examples, improved immunity to environmental variations can be achieved by equalizing sensor outputs in accordance with characterization of the sensing system. In some examples, improved performance can be achieved by sampling the sensor continuously and using an optimized window function to improve performance against noise.

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Номер записи: 27
30-04-2015 дата публикации

Pulse- or Frame-Based Communication Using Active Stylus

Номер: US20150116271A1
Автор: Shahrooz Shahparnia, Vivek Pant, Esat Yilmaz, Vemund Kval Bakken, Kishore Sundara-Rajan, John Stanley Dubery, Martin John Simmons, Sherif Hanna, SHAHPARNIA SHAHROOZ, PANT VIVEK, YILMAZ ESAT, BAKKEN VEMUND KVAL, SUNDARA-RAJAN KISHORE, DUBERY JOHN STANLEY, SIMMONS MARTIN JOHN, HANNA SHERIF
Принадлежит:

In one embodiment, a method includes receiving sensor data from one or more sensors in or on a stylus, the stylus including one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for wirelessly transmitting signals to a device through a touch sensor of the device. The method includes generating a carrier signal and modulating the carrier signal to communicate the sensor data and wirelessly transmitting from the stylus to the device the carrier signal as modulated through the touch sensor of the device. 120-. (canceled)21. A stylus comprising:one or more sensors;one or more electrodes configured to communicate with a device by receiving signals from and transmitting signals to a touch sensor of the device; and receive sensor data from the one or more sensors;', 'receive a first signal generated by the device;', 'generate a second signal by modulating a carrier signal based on the sensor data; and', 'transmit to the device, in response to the first signal, the second signal, the sensor data being obtainable by demodulating the second signal., 'one or more computer-readable non-transitory storage media embodying logic that is operable when executed to22. The stylus of claim 21 , wherein the first signal is the carrier signal modulated to generate the second signal.23. The stylus of claim 21 , wherein the second signal is generated using one of:amplitude modulation;frequency modulation; andphase modulation.24. The stylus of claim 21 , wherein:the one or more sensors comprise a pressure sensor and a button; andthe sensor data comprises pressure data and button state data.25. The stylus of claim 21 , wherein the sensor data is digital.26. The stylus of claim 21 , wherein the second signal is transmitted in a single electric pulse.27. One or more computer-readable non-transitory storage media embodying logic that is operable when executed to:receive sensor data from one or more sensors in or on a stylus, the stylus comprising ...

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Номер записи: 28
26-11-2015 дата публикации

REDUCE STYLUS TIP WOBBLE WHEN COUPLED TO CAPACITIVE SENSOR

Номер: US20150338932A1
Автор: Vivek Pant, Shahrooz Shahparnia, John Greer Elias
Принадлежит: Apple Inc.

An algorithm for reducing stylus tip wobble for a stylus translating on a surface over and between electrodes of a touch sensor panel is disclosed. In some examples, a first position estimate can be calculated using a first position calculation method and a second position estimate can be calculated using a second position calculation method. The position of the stylus can be determined based on a weighted combination of the first and second position estimates. In some examples, the first position estimate can be calculated using an even-point centroid of signal contributions from an even number of electrodes of a touch sensor panel and the second position estimate can be calculated using an odd-point centroid of signal contributions from an odd number of electrodes. In some examples, the weighting can be assigned based on a ratio of the two largest amplitude signals and based on a ratio of the second and third largest amplitude signals.

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Номер записи: 29
24-04-2014 дата публикации

Touch Sensor With Simultaneously Driven Drive Electrodes

Номер: US20140111464A1
Автор: Vemund Kval Bakken, Izhar Bentov, Vivek Pant, Shahrooz Shahparnia, BAKKEN VEMUND KVAL, BENTOV IZHAR, PANT VIVEK, SHAHPARNIA SHAHROOZ
Принадлежит:

In one embodiment, a method comprises generating, by a controller, a plurality of drive signals. The method further includes simultaneously transmitting, by the controller, the plurality of drive signals to a plurality of drive electrodes disposed on a touch sensor. The method further includes sensing a sense electrode of a plurality of sense electrodes disposed on the touch sensor. The sensing comprises measuring, for each drive electrode of the plurality of drive electrodes, at least one value indicative of a capacitance between the sense electrode and the drive electrode. 1. A device comprising: a substrate;', 'a plurality of drive electrodes disposed on the substrate; and', 'a plurality of sense electrodes disposed on the substrate;, 'a touch sensor comprising a drive unit configured to generate a plurality of drive signals that each have a different dominant frequency and simultaneously drive the plurality of drive electrodes with the plurality of drive signals; and', 'a sense unit configured to select a sense electrode of the plurality of sense electrodes through a demultiplexer coupled to at least two of the plurality of sense electrodes and to sense the selected sense electrode by measuring, for each drive electrode of the plurality of drive electrodes, at least one value that is indicative of a capacitance between the selected sense electrode and the drive electrode;, 'a controller coupled to the plurality of drive electrodes and the plurality of sense electrodes, the controller comprisinga transparent cover panel overlaying at least a portion of the touch sensor; andan electronic display.2. The apparatus of claim 1 , wherein the sense unit comprises a frequency splitter configured to process a sense signal received from the selected sense electrode to generate a plurality of signals that each correspond to a distinct drive electrode of the plurality of drive electrodes.3. The apparatus of claim 1 , the sense unit further configured to detect the presence ...

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Номер записи: 30
20-03-2018 дата публикации

Sensor with diffusing resistor

Номер: US0009921696B2
Автор: Steven P. Hotelling, Vivek Pant, Prathit Bugnait, Isaac Chan, HOTELLING STEVEN P, PANT VIVEK, BUGNAIT PRATHIT, CHAN ISAAC, Hotelling Steven P., Pant Vivek, Bugnait Prathit, Chan Isaac
Принадлежит: Apple Inc., APPLE INC

Electrode configurations for reducing wobble error for a stylus translating on a surface over and between electrodes of a touch sensor panel is disclosed. In some examples, electrodes associated with a more linear signal profile are correlated with lower wobble error. In some examples, electrodes are coupled to adjacent electrodes via diffusing resistors such that the signal profile for each electrode is spread to be more linear. In some configurations, the value of the diffusing resistors and series resistance associated with an electrode is selected based on a desired signal profile for that electrode. In some examples, the series resistance can include a trace resistance and a compensating resistance. The compensating resistance can compensate for a variance in trace resistance between electrodes, thus making series resistance substantially equal for each of the electrodes.

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Номер записи: 31
04-09-2018 дата публикации

Coarse scan and targeted active mode scan for touch

Номер: US0010067618B2
Автор: Shwetabh Verma, Shahrooz Shahparnia, Sumant Ranganathan, Vivek Pant
Принадлежит: Apple Inc.

Power consumption of touch sensing operations for touch sensitive devices can be reduced by implementing one or more coarse scans to coarsely detect the presence or absence of an object touching or proximate to a touch sensor panel and dynamically adjusting the operation of the touch sensitive device to perform or not perform one or more steps of a fine scan based on the results of the one or more coarse scans. In some examples, the fine scan can be scheduled, and one or more steps of the fine scan can be aborted when no touch is detected at touch sensors scanned during the one or more steps. Sense channels unused due to the aborted fine scan steps can be powered down during aborted fine scan steps.

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Номер записи: 32
08-03-2016 дата публикации

Pulse- or frame-based communication using active stylus

Номер: US0009280220B2
Автор: Shahrooz Shahparnia, Vivek Pant, Esat Yilmaz, Vemund Kval Bakken, Kishore Sundara-Rajan, John Stanley Dubery, Martin J. Simmons, Sherif Hanna
Принадлежит: Atmel Corporation

In one embodiment, a method includes receiving sensor data from one or more sensors in or on a stylus, the stylus including one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for wirelessly transmitting signals to a device through a touch sensor of the device. The method includes generating a carrier signal and modulating the carrier signal to communicate the sensor data and wirelessly transmitting from the stylus to the device the carrier signal as modulated through the touch sensor of the device.

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Номер записи: 33
19-02-2019 дата публикации

Dynamic adjustment of demodulation waveform

Номер: US0010209827B1
Автор: Moshe Malkin, Shahrooz Shahparnia, Vivek Pant, MALKIN MOSHE, SHAHPARNIA SHAHROOZ, PANT VIVEK, Malkin, Moshe, Shahparnia, Shahrooz, Pant, Vivek
Принадлежит: Apple Inc., APPLE INC

A touch sensing system can demodulate sensor data using a dynamically adjusted demodulation waveform and/or demodulation window. The demodulation waveform and/or demodulation window can be dynamically adjusted to account for dynamically changing noise in a touch sensing system. The system can dynamically adjust the demodulation window based on noise measured by the touch sensing system to generate an optimized or otherwise noise-tailored window to suppress detected noise. In some examples, the noise measured by the touch sensing system can be sampled from sense channels localized to a detected touch.

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Номер записи: 34
02-01-2018 дата публикации

Input signal correction architecture

Номер: US0009857921B2
Автор: Vivek Pant, Shahrooz Shahparnia, Adam Schwartz, PANT VIVEK, SHAHPARNIA SHAHROOZ, SCHWARTZ ADAM, Pant Vivek, Shahparnia Shahrooz, Schwartz Adam
Принадлежит: Synaptics Incorporated, PANT VIVEK, SHAHPARNIA SHAHROOZ, SCHWARTZ ADAM, SYNAPTICS INC, Pant Vivek, Shahparnia Shahrooz, Schwartz Adam

A capacitive input device processing system comprises input signal correction circuitry. The input signal correction circuitry includes an amplifier, a correction signal generator, and a charge collection mechanism. The amplifier is configured to receive a combination signal. The combination signal comprises a resulting signal from a sensor element and a correction charge. The correction signal generator is configured to generate a correction signal. The charge collection mechanism is configured to accumulate the correction charge from the correction signal.

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Номер записи: 35
02-05-2013 дата публикации

Tuning Algorithm for Noise Reduction in an Active Stylus

Номер: US20130106797A1
Автор: Vivek Pant, Trond Jarle Pedersen, Vemund Kval Bakken, Kishore Sundara-Rajan
Принадлежит: Atmel Corporation

In one embodiment, a stylus receives a signal, the stylus being able to wirelessly transmit signals to and receive signals from a device, and the stylus having a plurality of electrodes disposed in a tip of the stylus. The stylus compares a first value of the signal to a first threshold and determines whether to start a timing period based at least in part on this comparison. If the timing period is started, the stylus compares a second value of the signal to a second threshold and determines whether to stop the timing period based at least in part on this second comparison. If the timing period is stopped, the stylus determines whether the duration of the timing period is within a pre-determined range of timing period values. If so, the stylus processes the signal. 1. A method comprising:receiving a signal at a stylus, the stylus being operable to wirelessly transmit signals to and receive signals from a device, the stylus comprising a plurality of electrodes disposed in a tip of the stylus;comparing a first value of the signal to a first threshold;determining whether to start a timing period based at least in part on comparing the first value of the signal to the first threshold;if the timing period is started, comparing a second value of the signal to a second threshold;determining whether to stop the timing period based at least in part on comparing the second value of the signal to the second threshold;if the timing period is stopped, determining whether the duration of the timing period is within a pre-determined range of timing period values; andprocessing the signal if the duration of the timing period is within the pre-determined range of timing period values.2. The method of claim 1 , further comprising receiving a second signal at the stylus if the timing period is not started.3. The method of claim 1 , further comprising:comparing a third value of the signal to the second threshold if the timing period is not stopped; anddetermining whether to stop the ...

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Номер записи: 36
08-08-2017 дата публикации

Simultaneous touch sensor scanning and display refreshing for display-embedded touch sensors

Номер: US0009727168B2
Автор: Andrew Fuller, Samuel Brunet, Christopher Hill, Vivek Pant, Grahame Reynolds, FULLER ANDREW, BRUNET SAMUEL, HILL CHRISTOPHER, PANT VIVEK, REYNOLDS GRAHAME, Fuller Andrew, Brunet Samuel, Hill Christopher, Pant Vivek, Reynolds Grahame
Принадлежит: Atmel Corporation, ATMEL CORP

In one embodiment, a method includes receiving a request to refresh a display for a refresh period, wherein the display is coupled to a touch sensor operable to detect touch input at the display. During a first phase of the refresh period, a first portion of the display is refreshed while the touch sensor a second portion and a third portion of the display is activated. The second portion and the third portion are a half screen distance apart. During a second phase of the refresh period, the second portion of the display is refreshed while the touch sensor at a fourth portion and a fifth portion of the display is activated. The fourth portion and the fifth portion are a half screen distance apart.

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Номер записи: 37
01-04-2014 дата публикации

Input device receiver path and transmitter path error diagnosis

Номер: US0008686735B2
Автор: John Weinerth, Shahrooz Shahparnia, Vivek Pant, Joseph Kurth Reynolds, WEINERTH JOHN, SHAHPARNIA SHAHROOZ, PANT VIVEK, REYNOLDS JOSEPH KURTH
Принадлежит: Synaptics Incorporated, WEINERTH JOHN, SHAHPARNIA SHAHROOZ, PANT VIVEK, REYNOLDS JOSEPH KURTH, SYNAPTICS INC, SYNAPTICS INCORPORATED

An input device comprises a processing system coupled with a plurality of receiver paths. The processing system comprises a first capacitor and a bypass switch. The first capacitor is configured to be selectively coupled with the plurality of receiver paths. The bypass switch is configured for bypassing the first capacitor. The processing system is configured to selectively couple a first receiver path of the plurality of receiver paths with the first capacitor; acquire a measurement of a first resulting signal from at least one of the first receiver path or a second receiver path of the plurality of receiver paths while the first receiver path is coupled with the first capacitor and while the bypass switch is not bypassing the first capacitor; and determine whether the first receiver path is ohmically coupled with the second receiver path based on the measurement of the first resulting signal.

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Номер записи: 38
20-09-2016 дата публикации

Simultaneous touch sensor scanning and display refreshing for minimizing display degradation for display-embedded touch sensors

Номер: US0009448659B2
Автор: Andrew Fuller, Samuel Brunet, Christopher Hill, Vivek Pant, Grahame Reynolds, FULLER ANDREW, BRUNET SAMUEL, HILL CHRISTOPHER, PANT VIVEK, REYNOLDS GRAHAME, Fuller Andrew, Brunet Samuel, Hill Christopher, Pant Vivek, Reynolds Grahame
Принадлежит: Atmel Corporation, FULLER ANDREW, BRUNET SAMUEL, HILL CHRISTOPHER, PANT VIVEK, REYNOLDS GRAHAME, ATMEL CORP, Fuller Andrew, Brunet Samuel, Hill Christopher, Pant Vivek, Reynolds Grahame

In one embodiment, a method includes receiving a request to refresh a display for a refresh period, wherein the display is coupled to a touch sensor operable to detect touch input at the display. The method also includes refreshing a first portion of the display and activating the touch sensor at a second portion of the display different from the first portion of the display during a first portion of the refresh period. The method further includes, during a second portion of the refresh period, refreshing a third portion of the display different from the first and second portions of the display and activating the touch sensor at a fourth portion of the display different from the first, second, and third portions of the display.

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Номер записи: 39
19-01-2021 дата публикации

Drift invariant processing

Номер: US0010895932B1
Автор: Moshe Malkin, Vivek Pant, MALKIN MOSHE, PANT VIVEK, Malkin, Moshe, Pant, Vivek
Принадлежит: Apple Inc., APPLE INC

Improved sensing can include modified sampling and/or processing to improve performance against noise due to environmental variations and interference. In some examples, improved interference rejection can be achieved by sampling a sensor multiple times during settled periods. In some examples, the excitation signal and sampling window can be dynamically adjusted to satisfy drift and/or interference specifications based on various operating conditions or the operating environment. In some examples, drift performance can be traded off to improve interference performance. In some examples, improved immunity to environmental variations can be achieved by equalizing sensor outputs in accordance with characterization of the sensing system. In some examples, improved performance can be achieved by sampling the sensor continuously and using an optimized window function to improve performance against noise.

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Номер записи: 40
31-01-2017 дата публикации

Noise reduction for touch sensor system with active stylus

Номер: US0009557868B2
Автор: Manu Agarwal, Shahrooz Shahparnia, Vivek Pant, AGARWAL MANU, SHAHPARNIA SHAHROOZ, PANT VIVEK, Agarwal Manu, Shahparnia Shahrooz, Pant Vivek
Принадлежит: Apple Inc., APPLE INC

A touch sensor may overlap a display. A transparent shield layer that is grounded around its edges may be interposed between the display and the touch sensor to help prevent noise from display data lines from reaching the touch sensor. The data lines may extend along a first dimension. The touch sensor may have first elongated electrodes that extend along the first dimension and second elongated electrodes that extend along a second dimension that is perpendicular to the first dimension. The second electrodes may be interposed between the first electrodes and the data lines. Pen present electrodes may be used to gather pen present data associated with a stylus on the touch sensor. Adjacent noise sensors may collect noise data that is removed from the pen present data.

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Номер записи: 41
12-09-2017 дата публикации

Input device interference determination

Номер: US0009762234B2
Автор: Vivek Pant, Farzaneh Shahrokhi, Shahrooz Shahparnia, PANT VIVEK, SHAHROKHI FARZANEH, SHAHPARNIA SHAHROOZ, Pant Vivek, Shahrokhi Farzaneh, Shahparnia Shahrooz
Принадлежит: Synaptics Incorporated, PANT VIVEK, SHAHROKHI FARZANEH, SHAHPARNIA SHAHROOZ, SYNAPTICS INC, Pant Vivek, Shahrokhi Farzaneh, Shahparnia Shahrooz

An interference determining circuit for a capacitive sensor device comprises an amplifier, absolute differential circuitry, and comparator circuitry. The amplifier is configured for receiving a reference voltage at a first input and for receiving a resulting signal at a second input. The resulting signal is from a sensor electrode of the capacitive sensor device. The absolute differential circuitry is coupled with an output of the amplifier and configured for outputting a difference signal. The difference signal represents an absolute differential between currents utilized in the amplifier. The comparator circuitry is coupled with the absolute differential circuitry and configured for generating a non-linearity indication based on a comparison of the difference signal with at least one reference signal.

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Номер записи: 42
20-10-2015 дата публикации

Tuning algorithm for noise reduction in an active stylus

Номер: US0009164604B2
Автор: Vivek Pant, Trond Jarle Pedersen, Vemund Kval Bakken, Kishore Sundara-Rajan, PANT VIVEK, PEDERSEN TROND JARLE, BAKKEN VEMUND KVAL, SUNDARA-RAJAN KISHORE
Принадлежит: Atmel Corporation, ATMEL CORP, ATMEL CORPORATION

In one embodiment, a stylus receives a signal, the stylus being able to wirelessly transmit signals to and receive signals from a device, and the stylus having a plurality of electrodes disposed in a tip of the stylus. The stylus compares a first value of the signal to a first threshold and determines whether to start a timing period based at least in part on this comparison. If the timing period is started, the stylus compares a second value of the signal to a second threshold and determines whether to stop the timing period based at least in part on this second comparison. If the timing period is stopped, the stylus determines whether the duration of the timing period is within a pre-determined range of timing period values. If so, the stylus processes the signal.

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Номер записи: 43
15-11-2012 дата публикации

INPUT SIGNAL CORRECTION ARCHITECTURE

Номер: US20120287077A1
Автор: Vivek Pant, Shahrooz Shahparnia, Adam Schwartz, PANT VIVEK, SHAHPARNIA SHAHROOZ, SCHWARTZ ADAM
Принадлежит: Synaptics Inc

A capacitive input device processing system comprises input signal correction circuitry. The input signal correction circuitry includes an amplifier, a correction signal generator, and a charge collection mechanism. The amplifier is configured to receive a combination signal. The combination signal comprises a resulting signal from a sensor element and a correction charge. The correction signal generator is configured to generate a correction signal. The charge collection mechanism is configured to accumulate the correction charge from the correction signal.

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Номер записи: 44
28-03-2019 дата публикации

COARSE SCAN AND TARGETED ACTIVE MODE SCAN FOR TOUCH AND STYLUS

Номер: US20190095006A1
Автор: Geboff Adam, Grunthaner Martin Paul, Krah Christoph H., MULLENS Christopher Tenzin, Pant Vivek, Ranganathan Sumant, Shahparnia Shahrooz, VERMA Shwetabh, Yousefpor Marduke
Принадлежит:

Power consumption of touch sensing operations for touch sensitive devices can be reduced by implementing a coarse scan (e.g., banked common mode scan) to coarsely detect the presence or absence of an object touching or proximate to a touch sensor panel and the results of the coarse scan can be used to dynamically adjust the operation of the touch sensitive device to perform or not perform a fine scan (e.g., targeted active mode scan). In some examples, the results of the coarse scan can be used to program a touch controller for the next touch sensing frame to idle when no touch event is detected or to perform a fine scan when one or more touch events are detected. In some examples, the results of the coarse scan can be used to abort a scheduled fine scan during the current touch sensing frame when no touch event is detected. 120-. (canceled)21. An apparatus comprising:a touch sensor panel comprising touch electrodes, the touch sensor panel including a plurality of first regions, each of the plurality of first regions including a plurality of the touch electrodes; and perform a first detection scan of the touch sensor panel, the first detection scan comprising generating a touch value representative of an amount of touch at each of the plurality of first regions;', 'identify a coarse location of an object touching or proximate to the touch sensor panel, the coarse location corresponding to a second region smaller than one of the plurality of first regions; and', 'perform a second detection scan, the second detection scan of a portion of the touch sensor panel corresponding to the second region; and', 'identify a fine location of the object touching or proximate to the touch sensor panel., 'processing circuitry configured to221. The apparatus of claim , wherein the plurality of touch electrodes corresponding to one of the plurality of first regions is coupled to one corresponding sense channel during the first detection scan.231. The apparatus of claim , where the ...

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Номер записи: 45
09-06-2016 дата публикации

COARSE SCAN AND TARGETED ACTIVE MODE SCAN FOR TOUCH

Номер: US20160162011A1
Автор: Pant Vivek, Ranganathan Sumant, Shahparnia Shahrooz, VERMA Shwetabh
Принадлежит:

Power consumption of touch sensing operations for touch sensitive devices can be reduced by implementing one or more coarse scans to coarsely detect the presence or absence of an object touching or proximate to a touch sensor panel and dynamically adjusting the operation of the touch sensitive device to perform or not perform one or more steps of a fine scan based on the results of the one or more coarse scans. In some examples, the fine scan can be scheduled, and one or more steps of the fine scan can be aborted when no touch is detected at touch sensors scanned during the one or more steps. Sense channels unused due to the aborted fine scan steps can be powered down during aborted fine scan steps. 1. An apparatus comprising:sense channels configured to be coupled to one or more electrodes of a pixelated touch sensor panel; and scheduling one or more coarse scans of the pixelated touch sensor panel and a fine scan of the pixelated touch sensor panel, wherein the fine scan is a higher resolution scan than the one or more coarse scans;', 'executing the one or more coarse scans;', 'identifying one or more first banks of a plurality of first banks of electrodes of the pixelated touch sensor panel at which no touch event is detected by execution of the one or more coarse scans;', 'determining one or more steps of the fine scan to abort based on at least the one or more first banks at which no touch event is detected by the execution of the one or more coarse scans; and', 'aborting the determined one or more steps of the fine scan., 'processing circuitry capable of2. The apparatus of claim 1 , wherein one or more of the sense channels unused during an aborted fine scan step are powered down.3. The apparatus of claim 1 , wherein the one or more coarse scans includes a self-capacitance scan claim 1 , wherein each of a plurality of the sense channels is coupled to one of the plurality of first banks of electrodes of the pixelated touch sensor panel claim 1 , such that the ...

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Номер записи: 46
09-06-2016 дата публикации

Coarse scan and targeted active mode scan for touch and stylus

Номер: US20160162101A1
Автор: Christoph H. Krah, Marduke Yousefpor, Shahrooz Shahparnia, Vivek Pant
Принадлежит: Apple Inc

Power consumption of touch sensing operations for touch sensitive devices can be reduced by implementing a coarse scan (e.g., banked common mode scan) to coarsely detect the presence or absence of an object touching or proximate to a touch sensor panel and the results of the coarse scan can be used to dynamically adjust the operation of the touch sensitive device to perform or not perform a fine scan (e.g., targeted active mode scan). In some examples, the results of the coarse scan can be used to program a touch controller for the next touch sensing frame to idle when no touch event is detected or to perform a fine scan when one or more touch events are detected. In some examples, the results of the coarse scan can be used to abort a scheduled fine scan during the current touch sensing frame when no touch event is detected.

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Номер записи: 47
18-09-2014 дата публикации

Touch Sensor Scanning for Display-Embedded Touch Sensors

Номер: US20140267067A1
Автор: Brunet Samuel, Fuller Andrew, Hill Christopher, Pant Vivek, Reynolds Grahame
Принадлежит:

In one embodiment, a method includes receiving a request to refresh a display for a refresh period, wherein the display is coupled to a touch sensor operable to detect touch input at the display. The method also includes refreshing a first portion of the display and activating the touch sensor at a second portion of the display different from the first portion of the display during a first portion of the refresh period. The method further includes, during a second portion of the refresh period, refreshing a third portion of the display different from the first and second portions of the display and activating the touch sensor at a fourth portion of the display different from the first, second, and third portions of the display. 1. A method comprising:receiving a request to refresh a display for a refresh period, wherein the display is coupled to a touch sensor operable to detect touch input at the display; refreshing a first portion of the display; and', 'while refreshing the first portion of the display, activating the touch sensor at a second portion of the display;', 'wherein the second portion of the display is different from the first portion of the display., 'during a first portion of the refresh period2. The method of claim 1 , wherein the first portion of the display is adjacent the second portion of the display.3. The method of claim 1 , further comprising: refreshing a third portion of the display, wherein the third portion of the display is different from the first and second portions of the display; and', 'activating the touch sensor at a fourth portion of the display, the fourth portion of the display being different from the first, second, and third portions of the display., 'during a second portion of the refresh period4. The method of claim 3 , wherein the third portion of the display is adjacent the fourth portion of the display.5. The method of claim 3 , further comprising: refreshing a fifth portion of the display, wherein the fifth portion of the ...

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Номер записи: 48
15-09-2016 дата публикации

MULTI-CHIP TOUCH ARCHITECTURE FOR SCALABILITY

Номер: US20160266679A1
Автор: Krah Christoph H., Pant Vivek, Shahparnia Shahrooz
Принадлежит:

A multi-chip touch architecture for scalability can include one or more touch controller application specific integrated circuits (ASICs), and one or more switching circuits coupled between the one or more touch controller ASICs and the touch sensor panel. The number of touch controller ASICs and switching circuits can be scaled based on the size of the touch sensor panel. The touch controller ASICs can include an interface for data transfer between the touch controller ASICs to allow for parallel processing of an image of touch by more than one touch controller ASIC. The touch controller ASIC can also include a memory directly accessible by more than one processing circuit (e.g., hardware accelerators), and circuitry to dynamically adjust the coupling between portions (e.g., banks) of memory and inputs of the one or more processing circuits to minimize data transfer and improve processing speeds. 1. An integrated circuit comprising:a receive section including a plurality of receive channels configured to receive signals from sensing operations;a memory configured to store data based on the signals from the receive section; anda plurality of processing circuits, wherein at least two of the plurality of processing circuits are configured to directly access the memory, and one or more of the plurality of processing circuits is configured to process the data stored in the memory.2. The integrated circuit of claim 1 , further comprising a switching unit coupled between the memory and at least one of the plurality of processing circuits claim 1 , wherein the switching unit is configured to dynamically couple one or more banks of the memory to one or more inputs or one or more outputs of the one or more of the plurality of processing circuits.3. The integrated circuit of claim 2 , wherein the switching unit is coupled between the memory and at least one hardware accelerator claim 2 , and the switching unit is configured to dynamically couple one or more banks of the ...

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Номер записи: 49
27-09-2018 дата публикации

PIXELATED SELF-CAPACITANCE WATER REJECTION

Номер: US20180275824A1
Автор: Grunthaner Martin Paul, Li Yingxuan, Pant Vivek, Ranganathan Sumant, Yao Weijun, Yousefpor Marduke
Принадлежит:

A touch sensor panel is disclosed. In some examples, the touch sensor panel comprises a plurality of touch node electrodes. In some examples, the touch sensor panel comprises a touch controller configured to drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image, drive and sense the plurality of touch node electrodes in a second configuration, different from the fully bootstrapped configuration, to obtain a second touch image, the second touch image including an effect of water on the touch sensor panel, and determine a final touch image based on the fully bootstrapped touch image and the second touch image, the final touch image not including the effect of the water on the touch sensor panel. In some examples, the second configuration comprises a mutual capacitance configuration. In some examples, the second configuration comprises a partially bootstrapped configuration. 1. A touch sensor panel comprising:a plurality of touch node electrodes; and drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image,', 'drive and sense the plurality of touch node electrodes in a second configuration, different from the fully bootstrapped configuration, to obtain a second touch image, the second touch image including an effect of water on the touch sensor panel, and', 'determine a final touch image based on the fully bootstrapped touch image and the second touch image, the final touch image compensated for the effect of the water on the touch sensor panel., 'a touch controller configured to2. The touch sensor panel of claim 1 , wherein the second configuration comprises a mutual capacitance configuration.3. The touch sensor panel of claim 1 , wherein the second configuration comprises a partially bootstrapped configuration.4. The touch sensor panel of claim 1 , wherein the final touch image comprises a touch image of a ...

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Номер записи: 50
27-10-2016 дата публикации

SENSOR WITH DIFFUSING RESISTOR

Номер: US20160313825A1
Автор: BUGNAIT Prathit, CHAN Isaac, HOTELLING Steven P., Pant Vivek
Принадлежит:

Electrode configurations for reducing wobble error for a stylus translating on a surface over and between electrodes of a touch sensor panel is disclosed. In some examples, electrodes associated with a more linear signal profile are correlated with lower wobble error. In some examples, electrodes are coupled to adjacent electrodes via diffusing resistors such that the signal profile for each electrode is spread to be more linear. In some configurations, the value of the diffusing resistors and series resistance associated with an electrode is selected based on a desired signal profile for that electrode. In some examples, the series resistance can include a trace resistance and a compensating resistance. The compensating resistance can compensate for a variance in trace resistance between electrodes, thus making series resistance substantially equal for each of the electrodes. 1. An apparatus comprising: a plurality of sense electrodes, including a first sense electrode and a second sense electrode;', 'a plurality of diffusing resistors, including a first diffusing resistor coupled between the first sense electrode and the second sense electrode;, 'a touch sensor panel includingsense circuitry coupled to the first and second sense electrodes and configured to detect a touch signal using the first sense electrode and the second sense electrode.2. The apparatus of claim 1 , wherein:the first sense electrode and second sense electrode of the plurality of sense electrodes are formed on a first layer of a first conductive material; andthe first diffusing resistor is formed on the first layer of the first conductive material.3. The apparatus of claim 1 , wherein the touch sensor panel includes:a third sense electrode of the plurality of sense electrodes;a second diffusing resistor coupled between the first sense electrode and the third sense electrode; whereinthe second sense electrode is proximate to the first electrode in a first direction, and the third sense electrode ...

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Номер записи: 51
30-11-2017 дата публикации

POSITION-BASED STYLUS COMMUNICATION

Номер: US20170344174A1
Автор: Malkin Moshe, Pant Vivek, Shahparnia Shahrooz
Принадлежит:

Position-based sensing methods and systems can be used to transmit data from an input device to a touch-sensitive device. For example, the touch sensing system may perform one or more coarse input device sub-scans to determine a coarse location of the input device. The coarse location can be used to select one or more touch sensors (or sensor channels) to sample for decoding data encoded in the stimulation signals from the input device. During one or more fine input device sub-scans, the touch sensing system can determine a fine location of the input device and decode the data from the input device sampled from the selected touch sensors (or sensor channels). 1. A touch-sensitive device , comprising:a plurality of sense channels configured to receive signals from an input device at a plurality of touch sensors;a plurality of digital signal processors coupled to outputs of the plurality of sense channels, wherein the plurality of digital signal processors includes a plurality of first demodulators configured to demodulate the received signals;a position estimation processor configured to estimate a location of the input device based on a first plurality of received signals processed by the plurality of digital signal processors, and configured to select a subset of the plurality of sense channels coupled to one or more touch sensors proximate to the input device based on the estimated location of the input device; andone or more correlators couplable to the selected subset of the plurality of sense channels, wherein the one or more correlators comprise a plurality of second demodulators, the second demodulators configured to demodulate a second plurality of received signals from the selected subset of the plurality of sense channels, the one or more correlators configured to determine frequency content of the demodulated signals.2. The touch-sensitive device of claim 1 , further comprising one or more multiplexers configured to:receive a signal indicative of the ...

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Номер записи: 52
29-10-2020 дата публикации

PIXELATED SELF-CAPACITANCE WATER REJECTION

Номер: US20200341585A1
Автор: Grunthaner Martin Paul, Li Yingxuan, Pant Vivek, Ranganathan Sumant, Yao Weijun, Yousefpor Marduke
Принадлежит:

A touch sensor panel is disclosed. In some examples, the touch sensor panel comprises a plurality of touch node electrodes. In some examples, the touch sensor panel comprises a touch controller configured to drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image, drive and sense the plurality of touch node electrodes in a second configuration, different from the fully bootstrapped configuration, to obtain a second touch image, the second touch image including an effect of water on the touch sensor panel, and determine a final touch image based on the fully bootstrapped touch image and the second touch image, the final touch image not including the effect of the water on the touch sensor panel. In some examples, the second configuration comprises a mutual capacitance configuration. In some examples, the second configuration comprises a partially bootstrapped configuration. 1. A touch sensor panel comprising:a plurality of touch node electrodes; and [ 'drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image;', 'in a first touch frame, in accordance with a determination that one or more criteria are satisfied, including a criterion that a presence of water is detected at the plurality of touch node electrodes, perform a first set of scan steps; and', 'in accordance with a determination that the one or more criteria are not satisfied, perform a second set of scan steps, different from the first set of scan steps., 'in a second touch frame, after the first touch frame], 'a touch controller configured to2. The touch sensor panel of claim 1 , wherein driving and sensing the plurality of touch node electrodes in the fully bootstrapped configuration includes simultaneously driving and sensing each of the plurality of touch node electrodes.3. The touch sensor panel of claim 1 , wherein the touch controller is further ...

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Номер записи: 53
29-12-2016 дата публикации

Method for stylus touch-down and lift-off noise mitigation

Номер: US20160378208A1
Автор: Shahrooz Shahparnia, Vivek Pant
Принадлежит: Apple Inc

Active styli, methods and non-transitory computer readable storage media can be used for mitigating noise coupling from an active stylus to a touch sensing system. An active stylus can include a force sensor that can be used to detect stylus touch-down and lift-off events. Based on a touch-down and lift-off events, the stylus can generate stimulation signals and ramp up or ramp down the amplitude of the stimulation signals. Additionally or alternatively, an active stylus can receive information to synchronize the active stylus with a touch-sensitive device. Based on the information, the stylus can synchronize generation of stimulation signals with the stylus scan performed by the touch-sensitive device. The stimulation signals can be ramped up during a guard band period before a stylus scan and can be ramped down during a guard band period after the stylus scan.

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Номер записи: 54
30-04-2014 дата публикации

Pin positioning system

Номер: DE102013220964A1
Автор: Izhar Bentov, Vemund Kval Bakken, Vivek Pant
Принадлежит: Atmel Corp

Ein System einer Ausführungsform beinhaltet ein Berührungserfassungsgerät und einen Stift. Das Berührungserfassungsgerät beinhaltet ein Elektrodenfeld, welches eine Vielzahl von Elektrodenleitungspaaren beinhaltet, und eine Steuereinheit. Jedes Elektrodenleitungspaar beinhaltet eine erste und eine zweite Elektrodenleitung, um ein erstes bzw. ein zweites Signal zu senden. Der Stift beinhaltet einen Sensor, um das erste und das zweite Signal zu messen, einen Signalprozessor, um Positionsinformationen zu ermitteln, und einen Transmitter, um Positionsinformationen an das Berührungserfassungsgerät zu senden. Ein Verfahren einer anderen Ausführungsform beinhaltet das Senden, durch eine erste Elektrodenleitung, eines ersten Signals mit einer ersten Frequenz. Eine zweite Elektrodenleitung sendet ein zweites Signal mit einer zweiten Frequenz. Ein Stift empfängt das erste und das zweite Signal. Der Stift sendet ein Antwortsignal an das Berührungserfassungsgerät auf Basis des ersten und des zweiten Signals. Eine Position des Stifts wird auf Basis des ersten und des zweiten Signals ermittelt. A system of an embodiment includes a touch sensing device and a stylus. The touch sensing device includes an electrode pad that includes a plurality of electrode lead pairs and a control unit. Each pair of electrode lines includes first and second electrode lines to transmit a first and a second signal, respectively. The stylus includes a sensor to measure the first and second signals, a signal processor to determine position information, and a transmitter to send position information to the touch sensing device. A method of another embodiment includes transmitting, through a first electrode line, a first signal at a first frequency. A second electrode line sends a second signal at a second frequency. A pen receives the first and second signals. The stylus sends a response signal to the touch sensing device based on the first and second signals. A position of the stylus is determined based ...

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Номер записи: 55
06-09-2017 дата публикации

Pixelated self-capacitance water rejection

Номер: EP3213173A1
Автор: Marduke Yousefpor, Martin P. Grunthaner, Sumant Ranganathan, Vivek Pant, Weijun Yao, Yingxuan Li
Принадлежит: Apple Inc

A touch sensor panel is disclosed. In some examples, the touch sensor panel comprises a plurality of touch node electrodes. In some examples, the touch sensor panel comprises a touch controller configured to drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image, drive and sense the plurality of touch node electrodes in a second configuration, different from the fully bootstrapped configuration, to obtain a second touch image, the second touch image including an effect of water on the touch sensor panel, and determine a final touch image based on the fully bootstrapped touch image and the second touch image, the final touch image not including the effect of the water on the touch sensor panel. In some examples, the second configuration comprises a mutual capacitance configuration. In some examples, the second configuration comprises a partially bootstrapped configuration.

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Номер записи: 56
04-01-2024 дата публикации

Aktiver Stift mit Parallelkommunikationskanal

Номер: DE102013220963B4
Автор: Izhar Bentov, Vemund Kval Bakken, Vivek Pant
Принадлежит: Wacom Co Ltd

Verfahren, umfassend:Erzeugen, durch einen Stift (200), eines zusammengesetzten Signals mit:einem ersten Signal mit einer ersten Frequenz; undeinem zweiten Signal mit einer zweiten Frequenz, wobei das zweite Signal Informationen umfasst, die einen Betrag einer Kraft angeben, die auf einen Abschnitt des Stifts (200) ausgeübt wird;Empfangen, durch ein Elektrodenfeld (110) eines Berührungserfassungsgeräts (100), des zusammengesetzten Signals;Ermitteln, durch das Berührungserfassungsgerät (100), einer Position des Stifts (200) durch eine Verarbeitung des zusammengesetzten Signals; undErmitteln, durch das Berührungserfassungsgerät (100), der Informationen, die den Betrag der Kraft angeben, die auf den Abschnitt des Stifts (200) ausgeübt wird, durch Verarbeiten des zusammengesetzten Signals,wobei das erste Signal und das zweite Signal zu dem zusammengesetzten Signal unter Verwendung eines Frequenzmultiplexverfahrens kombiniert werden,wobei die zweite Frequenz zumindest doppelt so groß ist wie die erste Frequenz.

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Номер записи: 57
07-03-2024 дата публикации

Wastegateanordnung für einen turbolader und verfahren zu ihrem zusammenbau

Номер: DE102023114072A1
Автор: Christoph Mueller, Matthew Cooley, Matthias Pelgen, Vivek Pant
Принадлежит: BorgWarner Inc

Die vorliegende Erfindung betrifft ein Verfahren zum Zusammenbau einer Wastegateanordnung für einen Turbolader sowie einen Turbolader mit einem Turbinengehäuse, das ein Turbinengehäuseinneres, eine Bohrung und einen Wastegatekanal definiert, wobei der Wastegatekanal einen Wastegatekanalauslass aufweist und wobei das Turbinengehäuse einen Ventilsitz umfasst, der um den Wastegatekanal herum an dem Wastegatekanalauslass angeordnet ist; und eine Wastegateanordnung. Die Wastegateanordnung umfasst eine Buchse, die sich entlang einer Buchsenachse erstreckt und in der Bohrung angeordnet ist, eine Spindel, die derart in der Bohrung angeordnet ist, dass die Spindel durch die Buchse gestützt wird, und einen Ventilkörper, der in das Turbinengehäuseinnere einführbar und mit dem Ventilsitz in Eingriff bringbar ist. Die Spindel ist dazu konfiguriert Folgendes zu empfangen: eine erste Kraft Fa entlang der Buchsenachse, so dass die Spindel in der Buchse gesichert werden kann, eine zweite Kraft Fb, die senkrecht zur ersten Kraft Fa gerichtet ist, so dass die Spindel mit dem Ventilkörper in Eingriff bringbar ist und der Ventilkörper mit dem Ventilsitz in Eingriff bringbar ist, und eine dritte Kraft Ft, die senkrecht zur Buchsenachse gerichtet ist. Die Wastegateanordnung umfasst ferner ein Drehmomentelement, das mit der Spindel gekoppelt ist, wobei das Drehmomentelement dazu konfiguriert ist, dahingehend von einem Werkzeug in Eingriff genommen zu werden, ein Drehmoment an das Drehmomentelement zum Anlegen des Drehmoments an die Spindel anzulegen. Der Ventilkörper ist zur Wirkkopplung mit der Spindel konfiguriert, wenn zumindest die zweite Kraft Fb und die dritte Kraft Ft an die Spindel angelegt sind und das Drehmoment an das Drehmomentelement angelegt ist.

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Номер записи: 58