公开(公告)号：US20160320911A1

公开(公告)日：2016-11-03

申请号：US14697923

申请日：2015-04-28

Applicant: PIXART IMAGING INC.

Inventor： KENNETH CRANDALL ,  THOMAS PATRICK MURPHY ,  HSIN-CHIA CHEN

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044

Abstract: A capacitive sensing device including a touch panel and a controller chip is provided. The touch panel includes a plurality of first electrodes and a plurality of second electrodes. The controller chip includes a plurality of input capacitors and a plurality of output resistors. The input capacitors are selectively coupled to signal inputs of the first electrodes and the second electrodes, respectively. The output resistors are respectively coupled to signal outputs of the first electrodes and the second electrodes. The input capacitors and the output resistors are configured to form bridge circuits to suppress the influence of mutual capacitance between the first electrodes and the second electrodes.

Abstract translation: 提供了包括触摸面板和控制器芯片的电容式感测装置。 触摸面板包括多个第一电极和多个第二电极。 控制器芯片包括多个输入电容器和多个输出电阻器。 输入电容器分别选择性地耦合到第一电极和第二电极的信号输入端。 输出电阻器分别耦合到第一电极和第二电极的信号输出。 输入电容器和输出电阻器被配置为形成桥接电路以抑制第一电极和第二电极之间的互电容的影响。

公开(公告)号：US20150268758A1

公开(公告)日：2015-09-24

申请号：US14219168

申请日：2014-03-19

Applicant: PIXART IMAGING INC.

Inventor： CHUNG-WEN LO ,  KEN CRANDALL ,  HSIN-CHIA CHEN ,  RAMAN SAHGAL

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: There is provided a concurrent driving capacitive touch sensing device including a drive end, a capacitive sensing matrix and a detection end. The capacitive sensing matrix includes a plurality of drive electrodes and sense electrodes crossing to each other. The drive end is configured to concurrently input cycle data of encoded and modulated drive signals into the drive electrodes. The detection end is coupled to one of the sense electrodes and configured to acquire a predetermined number of sampled values corresponding to the cycle data associated with the coupled sense electrode and generate a response signal to the drive end according to the sampled values, wherein the drive end resends the cycle data according to the response signal.

Abstract translation: 提供了包括驱动端，电容感测矩阵和检测端的并行驱动电容式触摸感测装置。 电容感测矩阵包括彼此交叉的多个驱动电极和感测电极。 驱动端被配置为将编码和调制的驱动信号的周期数据同时输入到驱动电极中。 检测端耦合到感测电极中的一个并且被配置为获取对应于与耦合的感测电极相关联的周期数据的预定数量的采样值，并根据采样值产生到驱动端的响应信号，其中驱动 根据响应信号重新发送循环数据。