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公开(公告)号：US09900028B1
公开(公告)日：2018-02-20
申请号：US15449878
申请日：2017-03-03
Applicant: SYNAPTICS INCORPORATED
Inventor： Peijun Shan , David Sobel , Stephen L. Morein
CPC classification number: H04B1/0042 , H04B1/0017
Abstract: An example circuit includes: a plurality of analog-to-digital converters (ADCs) receiving a respective plurality of analog signals and outputting a respective plurality of digital signals; a coefficient generator circuit outputting a coefficient signal; and a plurality of decimation filters each including a first input that receives a respective one of the plurality of digital signals and a second input that receives the coefficient signal, each of the plurality of decimation filters including a finite impulse response (FIR) filter having a multiplier and a single accumulator.
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公开(公告)号：US20160246390A1
公开(公告)日：2016-08-25
申请号：US15047773
申请日：2016-02-19
Applicant: Synaptics Incorporated
Inventor： Jeff Lukanc , Kirk Hargreaves , David Sobel , Joseph Kurth Reynolds
IPC: G06F3/038 , G06F3/0354
CPC classification number: G06F3/0383 , G06F3/03545 , G06F3/038 , G06F3/0412 , G06F3/0416 , G06F3/044 , G06F2203/0384
Abstract: A processing system for an input device, the processing system including: a sensor module coupled to sensor circuitry and configured to: initiate a current beacon period including a plurality of timeslots by broadcasting a current beacon signal to a plurality of active pens; receive, during a first timeslot, a first downstream packet from a first active pen transceiver; and receive, during a second timeslot, a second downstream packet from a second active pen transceiver; and a determination module configured to: determine an attribute of a first active pen including the first active pen transceiver from at least the first downstream packet.
Abstract translation: 一种用于输入设备的处理系统，所述处理系统包括：传感器模块，耦合到传感器电路并且被配置为：通过向多个活动笔广播当前信标信号来发起包括多个时隙的当前信标周期; 在第一时隙期间从第一有源笔收发器接收第一下行分组; 并且在第二时隙期间从第二有源笔收发器接收第二下行分组; 以及确定模块，被配置为：从至少所述第一下游分组确定包括所述第一活动笔收发器的第一活动笔的属性。
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Patent Agency Ranking
公开(公告)号：US10228797B2
公开(公告)日：2019-03-12
申请号：US15265465
申请日：2016-09-14
Applicant: SYNAPTICS INCORPORATED
Inventor： Jeremy Roberson , David Sobel , Farzaneh Shahrokhi , Adam Schwartz , Eric Scott Bohannon
Abstract: Embodiments described herein include an input device with a plurality of capacitive sensor electrodes configured to receive a signal. The input device also includes a processing system coupled to the plurality of capacitive sensor electrodes. The processing system includes an analog front end (AFE). The AFE includes an anti-aliasing filter comprising a continuous time analog infinite impulse response (IIR) filter configured to filter out interference from the received signal at frequencies higher than a signal frequency of the processing system to produce an anti-aliased signal. The AFE also includes a charge integrator configured to integrate the anti-aliased signal.
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公开(公告)号：US11093093B2
公开(公告)日：2021-08-17
申请号：US16834976
申请日：2020-03-30
Applicant: Synaptics Incorporated
Inventor： John Weinerth , David Sobel , Derek Solven , Adam Schwartz , Joseph Kurth Reynolds , Tracy Scott Dattalo , David Hoch
Abstract: A processing system includes a sensor module configured to receive first and second signals from first and second sensor electrodes, respectively, and generate a combination signal. The processing system further includes a determination module configured to determine, using the first sensor electrode, an absolute capacitive coupling to an input object; determine, using the first and second sensor electrodes, a transcapacitive coupling; determine a ratio of the absolute to transcapacitive coupling; determine, using the combination signal, in absence of a predetermined low ground mass state, and when the ratio fails to exceed a predetermined threshold, first positional information regarding a location of the input object; and determine, when the ratio fails to exceed the predetermined threshold and in presence of the predetermined low ground mass state, second positional information regarding the location of the input object in the sensing region using an absolute capacitive scan.
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公开(公告)号：US20200233531A1
公开(公告)日：2020-07-23
申请号：US16834976
申请日：2020-03-30
Applicant: Synaptics Incorporated
Inventor： John Weinerth , David Sobel , Derek Solven , Adam Schwartz , Joseph Kurth Reynolds , Tracy Scott Dattalo , David Hoch
Abstract: A processing system includes a sensor module configured to receive first and second signals from first and second sensor electrodes, respectively, and generate a combination signal. The processing system further includes a determination module configured to determine, using the first sensor electrode, an absolute capacitive coupling to an input object; determine, using the first and second sensor electrodes, a transcapacitive coupling; determine a ratio of the absolute to transcapacitive coupling; determine, using the combination signal, in absence of a predetermined low ground mass state, and when the ratio fails to exceed a predetermined threshold, first positional information regarding a location of the input object; and determine, when the ratio fails to exceed the predetermined threshold and in presence of the predetermined low ground mass state, second positional information regarding the location of the input object in the sensing region using an absolute capacitive scan.
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公开(公告)号：US10122346B2
公开(公告)日：2018-11-06
申请号：US15449875
申请日：2017-03-03
Applicant: SYNAPTICS INCORPORATED
Inventor： Peijun Shan , David Sobel , Stephen L. Morein
Abstract: An example circuit includes: a filter configured to process a digital signal through at least one stage; and a coefficient generator circuit configured to generate coefficients for the at least one stage of the filter. The coefficient generator circuit includes: a lookup-table (LUT) configured to output a differential sequence; an up-sampling holder circuit configured to up-sample and hold the differential sequence to generate an up-sampled differential sequence; and an accumulator configured to integrate the up-sampled differential sequence to generate the coefficients.
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公开(公告)号：US20170364184A1
公开(公告)日：2017-12-21
申请号：US15696004
申请日：2017-09-05
Applicant: Synaptics Incorporated
Inventor： John Weinerth , David Sobel , Derek Solven , Adam Schwartz , Tracy Scott Dattalo , David Hoch , Joseph Kurth Reynolds
IPC: G06F3/044 , H01L27/32 , G06F3/041 , G06F3/0488
CPC classification number: G06F3/044 , G06F3/0412 , G06F3/0416 , G06F3/0488 , G06F2203/04107 , G06F2203/04112 , H01L27/323
Abstract: A method of capacitive sensing may include driving a first modulated signal onto a first sensor electrode in an input device and a second modulated signal onto a second sensor electrode in the input device. The method may further include receiving, simultaneously, a first resulting signal from the first sensor electrode and a second resulting signal from the second sensor electrode. The method may further include generating, based at least in part on the first resulting signal and the second resulting signal, a combination signal. The method may further include determining, using the combination signal, when the input device is not disposed in a predetermined low ground mass state, and when a ratio of capacitive coupling exceeds a predetermined threshold, first positional information regarding a location of the input object in the sensing region.
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