公开(公告)号：US20150324023A1

公开(公告)日：2015-11-12

申请号：US14272455

申请日：2014-05-07

Applicant: STMicroelectronics Asia Pacific PTE LTD

Inventor： Dianbo GUO ,  Praveesh CHANDRAN ,  Lokesh Kumar KORAPATI

IPC: G06F3/041

CPC classification number: A61B17/22022 ,  A61B18/245 ,  A61B18/26 ,  A61B2017/22051 ,  A61B2017/22079 ,  A61H23/008 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04108

Abstract: A touch panel includes a plurality of drive lines, a plurality of orthogonal sense lines, and a plurality of sensors. A method of controlling the touch panel to detect touches includes simultaneously applying a drive signal to each of a group of drive lines of the touch panel. Each of the drive signals is applied to a corresponding drive line in the group during a time slot and all the applied drive signals having the same electrical characteristics over the time slot. The method includes sensing sense signals generated on the sense lines in response to the applied drive signals and processing the sense signals to detect touches of the touch panel.

Abstract translation: 触摸面板包括多个驱动线，多个正交感测线和多个传感器。 控制触摸面板以检测触摸的方法包括同时对驱动信号施加到触摸面板的一组驱动线路中的每一个。 每个驱动信号在时隙期间被施加到组中的相应驱动线，并且所有所施加的驱动信号在时隙上具有相同的电特性。 该方法包括响应于所施加的驱动信号感测在感测线上产生的感测信号，并且处理感测信号以检测触摸面板的触摸。

公开(公告)号：US20170185182A1

公开(公告)日：2017-06-29

申请号：US14982349

申请日：2015-12-29

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

Inventor： Praveesh CHANDRAN ,  Lokesh Kumar KORAPATI ,  Mythreyi NAGARAJAN

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G02F1/133305 ,  G02F1/13338 ,  G06F3/0418 ,  G06F2203/04102

Abstract: The present disclosure is directed to a system and method to remove common mode noise projected onto a touch sensor array from a display. The system is configured to activate two rows of electrodes at the same time, while coupling remaining rows of electrodes to ground. A first one of the two activated rows is used for detection of a touch and a second one of the two activated rows is used to detect common mode noise from the display. The common mode noise detected by the second row is removed from signals received from a plurality of columns of the touch sensor array.

公开(公告)号：US20190050087A1

公开(公告)日：2019-02-14

申请号：US16162925

申请日：2018-10-17

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

Inventor： Praveesh CHANDRAN ,  Lokesh Kumar KORAPATI ,  Mythreyi NAGARAJAN

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0418 ,  G06F2203/04102

Abstract: The present disclosure is directed to a system and method to remove common mode noise projected onto a touch sensor array from a display. The system is configured to activate two rows of electrodes at the same time, while coupling remaining rows of electrodes to ground. A first one of the two activated rows is used for detection of a touch and a second one of the two activated rows is used to detect common mode noise from the display. The common mode noise detected by the second row is removed from signals received from a plurality of columns of the touch sensor array.

公开(公告)号：US20170060293A1

公开(公告)日：2017-03-02

申请号：US14840556

申请日：2015-08-31

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

Inventor： Kusuma Adi NINGRAT ,  Lokesh Kumar KORAPATI ,  Jerry KIM

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0418

Abstract: An electronic device may include a touchscreen having sensing capacitors, and readout circuitry. The readout circuitry may be configured to accumulate a sample set from each sensing capacitor, divide the sample set into sample subsets, remove a given sample subset when the given sample subset exceeds a threshold, and process remaining sample subsets for touch input.

Abstract translation: 电子设备可以包括具有感测电容器和读出电路的触摸屏。 读出电路可以被配置为从每个感测电容器累积采样集合，将采样集合划分为采样子集，当给定的采样子集超过阈值时移除给定的样本子集，并处理触摸输入的剩余采样子集。