公开(公告)号：US20170315655A1

公开(公告)日：2017-11-02

申请号：US15199322

申请日：2016-06-30

Applicant: SYNAPTICS INCORPORATED

Inventor： John Michael WEINERTH

IPC: G06F3/041

CPC classification number: G06F3/0416 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04107

Abstract: An input device and associated processing system and method are disclosed for operating a plurality of sensor electrodes. The method comprises driving, during a first period, a first portion of a plurality of sensor electrodes to a first voltage. The first portion corresponds to a first number of sensor electrodes. The method further comprises driving, during the first period, a second portion of the plurality of sensor electrodes to a second voltage less than the first voltage. The second portion corresponds to a second number of sensor electrodes. The first number and second number are based on a plurality of digital codes used to drive the first and second portions. The method further comprises transferring charge between the first portion and second portion to drive the second portion to an intermediate voltage, and driving, during a second period, the second portion from the intermediate voltage to the first voltage.

公开(公告)号：US20160334902A1

公开(公告)日：2016-11-17

申请号：US14870243

申请日：2015-09-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Zheming LI ,  Saikrishna GANTA ,  Tae-Song CHUNG ,  Rafael BETANCOURT ,  John Michael WEINERTH ,  Farzaneh SHAHROKHI

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/01

CPC classification number: G06F3/044 ,  G06F3/016 ,  G06F3/0416 ,  G06F2203/04108

Abstract: A capacitance measurement circuit cancels background capacitance while reducing charge leakage and supply ripples during reset phases and integrate phases. The capacitance measurement circuit operates a first switch into a linear mode causing a first resistance in the first switch, and after a delay, operates a second switch into a saturation mode causing a second resistance in parallel to the first resistance.

Abstract translation: 电容测量电路消除背景电容，同时减少电荷泄漏并在复位阶段提供纹波并整合相位。 电容测量电路将第一开关操作成线性模式，导致第一开关中的第一电阻，并且在延迟之后，将第二开关操作为饱和模式，使得与第一电阻平行的第二电阻。

公开(公告)号：US20170285859A1

公开(公告)日：2017-10-05

申请号：US15085900

申请日：2016-03-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Petr SHEPELEV ,  John Michael WEINERTH

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04108

Abstract: An input device, system, and processing system are disclosed for a display device with an integrated sensing device. The input device comprises a plurality of sensor electrodes, and a processing system coupled with the plurality of sensor electrodes. The processing system is configured to determine one or more low-noise periods associated with display update timing of the display device, and process, during the determined one or more low-noise periods, resulting signals received from the plurality of sensor electrodes.

公开(公告)号：US20160092026A1

公开(公告)日：2016-03-31

申请号：US14503015

申请日：2014-09-30

Applicant: Synaptics Incorporated

Inventor： Matthew STEVENSON ,  Shwetank KUMAR ,  Chia-yun KUAN ,  John Michael WEINERTH

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044

Abstract: Techniques for detecting noise with a capacitive sensing device. The includes driving a set of one or more sensor electrodes of a plurality of sensor electrodes with a sensing signal at a first frequency, receiving resulting signals based on the sensing signal for each of the one or more sensor electrodes driven, probing the set of one or more sensor electrodes to obtain a set of probing signals, and summing the probing signals of the set of probing signals to generate a noise-analysis signal.

Abstract translation: 用电容式感测装置检测噪声的技术。 该驱动器包括以一第一频率的感测信号驱动多个传感器电极的一组或多个传感器电极的集合，基于驱动的一个或多个传感器电极中的每一个接收所得到的信号，探测一组 或更多个传感器电极以获得一组探测信号，并且对探测信号组的探测信号进行求和以产生噪声分析信号。