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：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：US20190121488A1

公开(公告)日：2019-04-25

申请号：US16223428

申请日：2018-12-18

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Praveesh CHANDRAN ,  Manivannan PONNARASU ,  Mythreyi NAGARAJAN

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044

Abstract: A touch screen controller identifies an island in a matrix of acquired touch data values. A first sharpness of the island is calculated and a second sharpness of the island is calculated if the calculated first sharpness is greater than a sharpness threshold. A dynamic strength threshold is then determined as a function of the second sharpness if a variance of the island is greater than a dynamic variance threshold. A determination is then made that the identified island is a valid stylus island if a peak strength of the island is greater than the dynamic strength threshold.

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：US20150277587A1

公开(公告)日：2015-10-01

申请号：US14231360

申请日：2014-03-31

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

Inventor： Praveesh CHANDRAN ,  Ravi BHATIA

IPC: G06F3/038 ,  G06F21/44 ,  G09G5/12 ,  G06F3/0354 ,  G06F3/041

CPC classification number: G06F21/44 ,  G06F3/03545 ,  G06F3/0383 ,  G06F3/0416 ,  G06F21/445 ,  G06F2203/0384 ,  G09G5/12 ,  G09G2354/00

Abstract: A method of pairing an intelligent input device with an electronic device includes transmitting a start pairing identifier and receiving a unique identifier that identifies the intelligent input device. The method further includes authenticating the unique identifier using authentication information stored in the electronic device and transmitting a pairing successful identifier responsive to the unique identifier being authenticated to thereby pair the intelligent input device and the electronic device.

Abstract translation: 将智能输入设备与电子设备配对的方法包括：发送开始配对标识符并接收识别智能输入设备的唯一标识符。 该方法还包括使用存储在电子设备中的认证信息来认证唯一标识符，并响应于被认证的唯一标识符发送配对成功标识符，从而配对智能输入设备和电子设备。

公开(公告)号：US20140191978A1

公开(公告)日：2014-07-10

申请号：US13738081

申请日：2013-01-10

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE. LTD.

Inventor： Chee Yu NG ,  Praveesh CHANDRAN

IPC: G06F3/041

CPC classification number: G06F3/0416 ,  G06F3/044

Abstract: A borderless touchscreen panel includes a first conductive layer having rows of capacitive sensors and receiving traces, and a second conductive layer having columns of sensor bars and transmitting traces. The capacitive sensors are coupled to control circuitry via the receiving traces, and the sensor bars are coupled to the control circuitry via the transmitting traces. Peripheral sensor bars are disposed over the receiving traces such that the receiving traces can be routed within an active portion of the borderless touchscreen panel without obstructing its touch-detection capabilities. Furthermore, the receiving traces are comprised of a transparent material such as indium tin oxide, and therefore do not obstruct the display capabilities of the active portion. Thus, there is no need for an inactive border region since the receiving traces are disposed within the active portion without obstructing either the touch-detection or display capabilities of the borderless touchscreen panel.

Abstract translation: 无边界触摸屏面板包括具有行的电容传感器和接收迹线的第一导电层，以及具有传感器条和传输迹线列的第二导电层。 电容传感器经由接收迹线耦合到控制电路，并且传感器条经由发射迹线耦合到控制电路。 外围传感器杆设置在接收轨迹上方，使得接收轨迹可以在无边界触摸屏面板的有效部分内布线，而不会妨碍其触摸检测能力。 此外，接收迹线由诸如氧化铟锡的透明材料构成，因此不会妨碍有源部分的显示能力。 因此，由于接收迹线设置在有源部分内而不会妨碍无边界触摸屏面板的触摸检测或显示能力，因此不需要非活动边框区域。