公开(公告)号：US20160170516A1

公开(公告)日：2016-06-16

申请号：US14565622

申请日：2014-12-10

Applicant: PIXART IMAGING INC.

Inventor： KEN CRANDALL ,  CHUNG-WEN LO ,  DAVID TOUNEY ,  TOM MURPHY ,  HSIN-CHIA CHEN

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: There is provided a capacitive touch device including a touch panel, a detection circuit and a processing unit. The touch panel includes a plurality of drive electrodes and a plurality of receiving electrodes configured to form a coupling electric field with an external touch panel, and the receiving electrodes are respectively configured to output a detection signal. The detection circuit is coupled to one of the receiving electrodes and configured to modulate the detection signal with two signals to generate two detection components. The processing unit is configured to obtain a phase value according to the two detection components to accordingly decode transmission data.

Abstract translation: 提供了一种包括触摸面板，检测电路和处理单元的电容式触摸装置。 触摸面板包括多个驱动电极和被配置为与外部触摸面板形成耦合电场的多个接收电极，并且接收电极分别被配置为输出检测信号。 检测电路耦合到接收电极中的一个并被配置为用两个信号调制检测信号以产生两个检测分量。 处理单元被配置为根据两个检测组件获得相位值，以相应地解码发送数据。