公开(公告)号：US20180321792A1

公开(公告)日：2018-11-08

申请号：US15718023

申请日：2017-09-28

Applicant: PIXART IMAGING INC.

Inventor： SUNG-HAN WU ,  MING-HUNG TSAI ,  CHE-CHIA HSU

IPC: G06F3/041 ,  G06F3/047

CPC classification number: G06F3/0418 ,  G06F3/044 ,  G06F3/047 ,  G06F2203/04111

Abstract: A compensation method for an induced amount in a touch sensor and a touch panel thereof are provided. The compensation method uses a fake finger circuit to simulate the situations when a user touches the sensing nodes of the touch sensor with a finger, and obtains the gain coefficient of each of the sensing nodes, which are used to compensate for the induced capacitance generated by the sensing nodes as a result of being touched by an external object. In this way, the extra effects caused by the difference in basic capacitance can be eliminated by the gain coefficient.

公开(公告)号：US20150268789A1

公开(公告)日：2015-09-24

申请号：US14603672

申请日：2015-01-23

Applicant: PIXART IMAGING INC.

Inventor： CHI-CHIEH LIAO ,  TSE-CHUNG SU ,  MING-HUNG TSAI

IPC: G06F3/041 ,  G06F3/0488

CPC classification number: G06F3/0416 ,  G06F3/0488

Abstract: There is provided a method for preventing accidentally triggering edge swipe gestures adapted to a touch control system including a touch surface. The method includes the steps of: recording first information when a first gesture is detected to end at a periphery of the touch surface; recording second information when a second gesture is detected to start at the periphery of the touch surface; and determining, by a processor, whether to trigger an edge swipe gesture of the touch control system according to the first information and the second information.

Abstract translation: 提供了一种用于防止意外触发适合于包括触摸表面的触摸控制系统的边缘滑动手势的方法。 该方法包括以下步骤：当检测到第一手势在触摸表面的周围结束时记录第一信息; 当检测到第二手势在触摸表面的周围开始时记录第二信息; 以及根据所述第一信息和所述第二信息，由处理器确定是否触发所述触摸控制系统的边缘滑动手势。

公开(公告)号：US20240288969A1

公开(公告)日：2024-08-29

申请号：US18659022

申请日：2024-05-09

Applicant: PixArt Imaging Inc.

Inventor： MING-HUNG TSAI ,  Sung-Han Wu

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/044

Abstract: There is provided a capacitive touch control system including a readout circuit and a touch panel. The touch panel includes multiple pixels arranged in a matrix, and is configured to operate in a first mode or a second mode. In the first mode, the touch panel time-divisionally detects a beacon frequency of a beacon symbol of the stylus pen signal within a first detection interval and performs a touch detection within a second detection interval corresponding to a beacon length interval of the beacon symbol. In the second mode, the readout circuit sequentially reads all pixel rows and pixel columns of the multiple pixels using a predetermined number of readout intervals within a positioning interval of the stylus pen signal, wherein in each of the readout intervals, each of multiple sub-circuits of the readout circuit reads one pixel row or one pixel column of the touch panel.