公开(公告)号：US20180107334A1

公开(公告)日：2018-04-19

申请号：US15846608

申请日：2017-12-19

Applicant: PixArt Imaging Inc.

Inventor： Fu-Chen CHEN ,  Ming-Tsan KAO ,  Yu-Han CHEN

IPC: G06F3/041 ,  G06F1/32 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F1/3262 ,  G06F3/044 ,  Y02D50/20

Abstract: There is provided a capacitive touch device including a controlling and processing circuit and a touch panel. The touch panel has a plurality of detection cells arranged in matrix. The controlling and processing circuit is configured to input a drive signal to the detection cells of the touch panel and read measurement data from the detection cells for post-processing, wherein the controlling and processing circuit reads a first sampling number of the measurement data of the detection cells in a normal mode and a second sampling number of the measurement data of the detection cells in a sleep mode, and the second sampling number is lower than the first sampling number.