公开(公告)号：US20210173523A1

公开(公告)日：2021-06-10

申请号：US16703276

申请日：2019-12-04

Applicant: PixArt Imaging Inc.

Inventor： CHIA-YI LEE

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/05

Abstract: There is provided a capacitive touch device including a touch panel, a plurality of driving circuits, an analog front end and a digital back end. In a sleep mode, the plurality of driving circuits does not output driving signals to the touch panel, and the analog front end converts amplified and filtered noises outputted from the touch panel to digital signals. The digital back end identifies whether to leave the sleep mode according to the digital signals.

公开(公告)号：US20170235370A1

公开(公告)日：2017-08-17

申请号：US15340847

申请日：2016-11-01

Applicant: PIXART IMAGING INC.

Inventor： YU-HAN CHEN ,  CHI-CHIEH LIAO ,  CHIA-YI LEE

IPC: G06F3/01 ,  G06F3/044 ,  G06F3/041

CPC classification number: G06F3/017 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04101

Abstract: Disclosed is a three-dimensional gesture sensing method. The three-dimensional gesture sensing method comprises the following steps. Step A: driving at least one first conductive line of conductive lines in the touch sensing device as a first working sensing line, and driving at least one second conductive line of the conductive lines in the touch sensing device as a second working sensing line, such that a sensing area is formed between the first working sensing line and the second working sensing line. Step B: detecting a conductor according to the sensing area. Step C: dynamically adjusting at least the area, the position or the amount of the sensing area according to the conductor to implement a three-dimensional gesture sensing.