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公开(公告)号：US20220075497A1
公开(公告)日：2022-03-10
申请号：US17450441
申请日：2021-10-08
Applicant: Apple Inc.
Inventor： Marduke YOUSEFPOR , Mohammad YEKE YAZDANDOOST , Aaron Scott TUCKER , Marcus YIP , Ehsan KHAJEH , Brian Michael KING , Giovanni GOZZINI
Abstract: Acoustic touch and/or force sensing system architectures and methods for acoustic touch and/or force sensing can be used to detect a position of an object touching a surface and an amount of force applied to the surface by the object. The position and/or an applied force can be determined using time-of-flight (TOF) techniques, for example. Acoustic touch sensing can utilize transducers (e.g., piezoelectric) to simultaneously transmit ultrasonic waves along a surface and through a thickness of a deformable material. The location of the object and the applied force can be determined based on the amount of time elapsing between the transmission of the waves and receipt of the reflected waves. In some examples, an acoustic touch sensing system can be insensitive to water contact on the device surface, and thus acoustic touch sensing can be used for touch sensing in devices that may become wet or fully submerged in water.
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公开(公告)号：US20210373711A1
公开(公告)日：2021-12-02
申请号：US17326249
申请日：2021-05-20
Applicant: Apple Inc.
Inventor： John Stephen SMITH , Amit NAYYAR , Joseph Kurth REYNOLDS , Sagar Rajiv VAZE , Marduke YOUSEFPOR
Abstract: Touch sensor panels (or touch screens) can improve signal-to-noise ratio (SNR) using touch electrode patterns for differential drive and/or differential sense techniques. In some examples, a touch sensor panel can include a two-dimensional array of touch nodes formed from a plurality of touch electrodes. Each column (or row) of touch nodes can be driven with a plurality of drive signals. For example, a first column (or row) of touch nodes can be driven by a first drive signal applied to one or more first touch nodes in the first column (or row) and a second drive signal applied to a one or more second touch nodes of the first column (or row). In some examples, the first drive signal and the second drive signal can be complimentary drive signals. In some examples, each row (or column) of touch electrodes can be sensed by differential sense circuitry.
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公开(公告)号：US20210149561A1
公开(公告)日：2021-05-20
申请号：US16953303
申请日：2020-11-19
Applicant: Apple Inc.
Inventor： Shahrooz SHAHPARNIA , Marduke YOUSEFPOR
IPC: G06F3/041 , G06F3/044 , G06F3/0354
Abstract: A touch controller that can configure touch circuitry according to a scan plan, which can define a sequence of scan events to be performed on a touch panel is disclosed. The touch controller can include a configurable transmit section to generate stimulation signals to drive the panel, a configurable receive section to receive and process touch signals from the panel, and a configurable memory to store the touch signals. The touch controller can also include a programmable scan engine to configure the transmit section, the receive section, and the memory according to the scan plan. The touch controller advantageously provides more robust and flexible touch circuitry to handle various types of touch events at the panel. An active stylus that can generate stimulation signals that can be detected by the touch controller during various touch events at the panel is also disclosed.
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44.发明申请公开(公告)号：US20200333902A1
公开(公告)日：2020-10-22
申请号：US16921817
申请日：2020-07-06
Applicant: Apple Inc.
Inventor： Yingxuan LI , Marduke YOUSEFPOR , Weijun YAO
Abstract: A touch controller is disclosed. The touch controller can include sense circuitry configured to sense, during a self-capacitance portion of a touch frame, first one or more self-capacitances associated with a first plurality of touch pixels on a touch sensor panel, and sense, during a mutual capacitance portion of the touch frame, first one or more mutual capacitances associated with the first plurality of touch pixels. A touch processor can be configured to, based on the first one or more self-capacitances and the first one or more mutual capacitances, sense a single touch event associated with the touch frame.
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Patent Agency Ranking
公开(公告)号：US20190095006A1
公开(公告)日：2019-03-28
申请号：US16114023
申请日：2018-08-27
Applicant: Apple Inc.
Inventor： Shahrooz SHAHPARNIA , Christopher Tenzin MULLENS , Martin Paul GRUNTHANER , Adam GEBOFF , Vivek PANT , Marduke YOUSEFPOR , Christoph H. KRAH , Shwetabh VERMA , Sumant RANGANATHAN
Abstract: 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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公开(公告)号：US20180341347A1
公开(公告)日：2018-11-29
申请号：US15988991
申请日：2018-05-24
Applicant: Apple Inc.
Inventor： Marduke YOUSEFPOR , Mohammad YEKE YAZDANDOOST , Aaron Scott TUCKER , Marcus YIP , Ehsan KHAJEH , Brian Michael KING , Giovanni GOZZINI
Abstract: Acoustic touch and/or force sensing system architectures and methods for acoustic touch and/or force sensing can be used to detect a position of an object touching a surface and an amount of force applied to the surface by the object. The position and/or an applied force can be determined using time-of-flight (TOF) techniques, for example. Acoustic touch sensing can utilize transducers (e.g., piezoelectric) to simultaneously transmit ultrasonic waves along a surface and through a thickness of a deformable material. The location of the object and the applied force can be determined based on the amount of time elapsing between the transmission of the waves and receipt of the reflected waves. In some examples, an acoustic touch sensing system can be insensitive to water contact on the device surface, and thus acoustic touch sensing can be used for touch sensing in devices that may become wet or fully submerged in water.
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公开(公告)号：US20180275824A1
公开(公告)日：2018-09-27
申请号：US15522737
申请日：2015-10-27
Applicant: APPLE INC.
Inventor： Yingxuan LI , Weijun YAO , Vivek PANT , Martin Paul GRUNTHANER , Marduke YOUSEFPOR , Sumant RANGANATHAN
IPC: G06F3/041 , G06F3/044 , G06F3/0354
Abstract: 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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公开(公告)号：US20150049045A1
公开(公告)日：2015-02-19
申请号：US14106283
申请日：2013-12-13
Applicant: Apple Inc.
Inventor： Marduke YOUSEFPOR
CPC classification number: G06F3/0412 , G02F1/13452 , G06F3/0416 , G06F3/044
Abstract: An integrated touch sensitive display is provided. The integrated touch sensitive display can include rows and columns of touch electrodes. Various modulation techniques can be applied to one or more of the touch electrodes to allow sense circuitry to individually measure a capacitance associated with each of the touch electrodes. The capacitances can be used to determine a location and/or amount of touch or hover events at or near the integrated touch sensitive display.
Abstract translation: 提供集成的触敏显示器。 集成的触敏显示器可以包括行和列的触摸电极。 各种调制技术可以应用于一个或多个触摸电极，以允许感测电路单独地测量与每个触摸电极相关联的电容。 电容可以用于确定集成的触敏显示器处或附近的触摸或悬停事件的位置和/或量。
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公开(公告)号：US20140267086A1
公开(公告)日：2014-09-18
申请号：US13844171
申请日：2013-03-15
Applicant: APPLE INC.
Inventor： Marduke YOUSEFPOR , Christoph Horst Krah , Kevin J. White
IPC: G06F3/041
CPC classification number: G06F3/0418 , G06F3/044
Abstract: A touch input device configured to mitigate the effects of dynamic cross talk noise is provided. The touch input device can dither an effective resistance of a plurality of gate lines proximal to the touch sensor panel in order to determine if a phase of a touch signal demodulator needs to be adjusted.
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