公开(公告)号：US20160282996A1

公开(公告)日：2016-09-29

申请号：US15176687

申请日：2016-06-08

Applicant: PixArt Imaging Inc.

Inventor： Sung-Han WU ,  Yu-Han CHEN ,  Ming-Hung TSAI ,  Meng-Lin YU ,  Hsin-Chia CHEN

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0418

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.

公开(公告)号：US20180164924A1

公开(公告)日：2018-06-14

申请号：US15893114

申请日：2018-02-09

Applicant: PixArt Imaging Inc.

Inventor： Sung-Han WU ,  Yu-Han CHEN ,  Ming-Hung TSAI ,  Meng-Lin YU ,  Hsin-Chia CHEN

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0418

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.