公开(公告)号：US20160179232A1

公开(公告)日：2016-06-23

申请号：US14635913

申请日：2015-03-02

Applicant: Synaptics Incorporated

Inventor： Jeffrey S. LILLIE ,  John CHILDS ,  Marshall J. BELL, JR. ,  Thomas MACKIN

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G09G3/20 ,  G09G2354/00

Abstract: Embodiments of the present invention generally provide a processing system for a display device having an integrated sensing device. The processing system includes a driver module coupled to a plurality of source lines and a plurality of transmitter electrodes. Each transmitter electrode includes one or more common electrodes configured for display updating and input sensing. The driver module is configured for selecting a first display line for display updating and driving the sources lines with first display update signals to update the first display line. The drive module is further configured for driving a first transmitter electrode of the plurality of transmitter electrodes for input sensing during a non-display update period and driving the source lines with restore signals during a restart period. The processing system further includes a receiver module coupled to a plurality of receiver electrodes and configured for receiving resulting signals with the receiver electrodes.

Abstract translation: 本发明的实施例通常提供一种具有集成感测装置的显示装置的处理系统。 处理系统包括耦合到多个源极线和多个发射器电极的驱动器模块。 每个发射器电极包括配置用于显示更新和输入感测的一个或多个公共电极。 驱动器模块被配置为选择用于显示更新的第一显示行，并且利用第一显示更新信号来驱动源线以更新第一显示行。 驱动模块还被配置为在非显示更新周期期间驱动多个发射器电极中的第一发射器电极用于输入感测，并且在重新启动周期期间用恢复信号驱动源极线。 处理系统还包括耦合到多个接收器电极并被配置为用接收器电极接收结果信号的接收器模块。

公开(公告)号：US20190361545A1

公开(公告)日：2019-11-28

申请号：US16533474

申请日：2019-08-06

Applicant: SYNAPTICS INCORPORATED

Inventor： Eric Scott BOHANNON ,  Marshall J. BELL, JR.

IPC: G06F3/044 ,  G06F3/041

Abstract: A method and related processing system and input device are disclosed, the method comprising driving a first capacitive sensing signal with first sensing frequency onto a first group of a plurality of sensor electrodes, and acquiring first capacitive measurements of resulting signals received by a second group of the plurality of sensor electrodes. Acquiring first capacitive measurements comprises applying a first demodulation signal with a predefined first mixing period defined within a sensing period associated with the first sensing frequency. The method further comprises driving a second capacitive sensing signal having a second sensing frequency different than the first sensing frequency onto a third group of the plurality of sensor electrodes, and acquiring second capacitive measurements of resulting signals received by a fourth group of the plurality of sensor electrodes. Acquiring second capacitive measurements comprises applying a second demodulation signal having a different predefined second mixing period.

公开(公告)号：US20180356914A1

公开(公告)日：2018-12-13

申请号：US16107570

申请日：2018-08-21

Applicant: SYNAPTICS INCORPORATED

Inventor： Eric Scott BOHANNON ,  Marshall J. BELL, JR. ,  Yihong YANG

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0354

Abstract: A processing system, and associated input device and method are disclosed suitable for reducing a receiver size within the input device. The processing system comprises a delta-sigma modulator comprising one or more input nodes configured to receive a signal based on a sensor signal received from at least a first sensor electrode of the plurality of sensor electrodes. The delta-sigma modulator further comprises an integrator coupled with the one or more input nodes and configured to produce an integration signal, a quantizer coupled with an output of the integrator and configured to quantize the integration signal, and a feedback digital-to-analog converter (DAC) controlled based by the quantizer. The processing system further comprises a digital filter coupled with an output of the delta-sigma modulator and configured to mitigate a quantization noise of the quantizer.

公开(公告)号：US20150115977A1

公开(公告)日：2015-04-30

申请号：US14067863

申请日：2013-10-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Eric Scott BOHANNON ,  Marshall J. BELL, JR. ,  Kirk HARGREAVES ,  Murat OZBAS ,  Jeffrey A. SMALL

IPC: G01R27/26 ,  G06F3/044 ,  G01R35/00

CPC classification number: G01R27/2605 ,  G01R35/005 ,  G06F3/044

Abstract: The embodiments herein are generally directed to using a current-mode CBC circuit to maintain a voltage bias setting at a receiver when performing capacitive sensing. To do so, the CBC circuit may compensate for the change in voltage at a receiver by providing a current at the input of the receiver. Instead of using a passive CBC capacitor for each receiver, the input device may use a single CBC capacitor and a plurality of current mirrors to source and sink the current required to correct the input voltage at a plurality of receivers. As a result, the current-mode CBC circuit includes only one passive capacitor (or bank of capacitors) and a plurality of current mirrors which may provide space and cost benefits relative to a CBC circuit that uses a passive capacitor (or bank of capacitors) for each receiver channel.

Abstract translation: 本文的实施例通常涉及使用电流模式CBC电路来在执行电容感测时维持接收器处的电压偏置设置。 为此，CBC电路可以通过在接收机的输入端提供电流来补偿接收机的电压变化。 代替对每个接收机使用无源CBC电容器，输入装置可以使用单个CBC电容器和多个电流镜来源和吸收在多个接收器处校正输入电压所需的电流。 结果，电流模式CBC电路仅包括一个无源电容器（或电容器组）和多个电流镜，其可以相对于使用无源电容器（或电容器组）的CBC电路提供空间和成本优势， 对于每个接收器通道。

公开(公告)号：US20180196542A1

公开(公告)日：2018-07-12

申请号：US15400681

申请日：2017-01-06

Applicant: SYNAPTICS INCORPORATED

Inventor： Eric Scott BOHANNON ,  Marshall J. BELL, JR.

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: A method and related processing system and input device are disclosed, the method comprising driving a first capacitive sensing signal with first sensing frequency onto a first group of a plurality of sensor electrodes, and acquiring first capacitive measurements of resulting signals received by a second group of the plurality of sensor electrodes. Acquiring first capacitive measurements comprises applying a first demodulation signal with a predefined first mixing period defined within a sensing period associated with the first sensing frequency. The method further comprises driving a second capacitive sensing signal having a second sensing frequency different than the first sensing frequency onto a third group of the plurality of sensor electrodes, and acquiring second capacitive measurements of resulting signals received by a fourth group of the plurality of sensor electrodes. Acquiring second capacitive measurements comprises applying a second demodulation signal having a different predefined second mixing period.

公开(公告)号：US20180004317A1

公开(公告)日：2018-01-04

申请号：US15199276

申请日：2016-06-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Eric Scott BOHANNON ,  Marshall J. BELL, JR. ,  Yihong YANG

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G06F3/03547 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/0418 ,  G06F3/044

Abstract: A processing system, and associated input device and method are disclosed suitable for reducing a receiver size within the input device. The processing system comprises a delta-sigma modulator comprising one or more input nodes configured to receive a signal based on a sensor signal received from at least a first sensor electrode of the plurality of sensor electrodes. The delta-sigma modulator further comprises an integrator coupled with the one or more input nodes and configured to produce an integration signal, a quantizer coupled with an output of the integrator and configured to quantize the integration signal, and a feedback digital-to-analog converter (DAC) controlled based by the quantizer. The processing system further comprises a digital filter coupled with an output of the delta-sigma modulator and configured to mitigate a quantization noise of the quantizer.

公开(公告)号：US20150309643A1

公开(公告)日：2015-10-29

申请号：US14318837

申请日：2014-06-30

Applicant: Synaptics Incorporated

Inventor： Stephen L. MOREIN ,  Marshall J. BELL, JR.

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/044

Abstract: Various embodiments enable driving one or more sub-pixels with a source voltage while concurrently modulating the voltage of one or more common electrodes coupled to the sub-pixels to perform input sensing with the common electrodes. The voltage driven onto the sub-pixel may be shifted while the common electrode is modulated by a value about equal to about the amplitude of the modulation applied to the common electrode. Thus, the potential difference between the source line and common electrode remains substantially unchanged so that display asperities are not introduced while input sensing while concurrently updating a sub-pixel with display information. Thus, the common electrode(s) may be modulated for input sensing without interfering with display updating of the one or more sub-pixels, greatly increasing the amount of time available for performing input sensing and/or display updating.

Abstract translation: 各种实施例使得能够以源电压驱动一个或多个子像素，同时同时调制耦合到子像素的一个或多个公共电极的电压，以对公共电极执行输入感测。 驱动到子像素上的电压可以移动，同时公共电极被调制大约等于施加到公共电极的调制的幅度的值。 因此，源极线和公共电极之间的电位差基本上保持不变，使得在同时更新具有显示信息的子像素的同时，在输入感测期间不引入显示粗糙度。 因此，可以调制公共电极用于输入感测，而不干扰一个或多个子像素的显示更新，从而大大增加了可用于执行输入感测和/或显示更新的时间量。