公开(公告)号：US20170131823A1

公开(公告)日：2017-05-11

申请号：US14936166

申请日：2015-11-09

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

Inventor： Leonard Liviu Dinu ,  Chao Chao Zhang

IPC: G06F3/041 ,  G06K9/40 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0418

Abstract: An electronic device includes a touch screen controller. The touch screen controller is configured to asynchronously measure a capacitance between a sense line and a drive line of a sensing layer with respect to a horizontal sync signal of a display layer. In addition, the touch screen controller is also configured to disconnect from the sense line for a given period of time following a rising edge of the horizontal sync signal so as to reduce capacitive coupling of display noise from the horizontal sync signal to the sensing layer.

公开(公告)号：US10156945B2

公开(公告)日：2018-12-18

申请号：US14936166

申请日：2015-11-09

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Leonard Liviu Dinu ,  Chao Chao Zhang

IPC: G06F3/041 ,  G06F3/044

Abstract: An electronic device includes a touch screen controller. The touch screen controller is configured to asynchronously measure a capacitance between a sense line and a drive line of a sensing layer with respect to a horizontal sync signal of a display layer. In addition, the touch screen controller is also configured to disconnect from the sense line for a given period of time following a rising edge of the horizontal sync signal so as to reduce capacitive coupling of display noise from the horizontal sync signal to the sensing layer.

公开(公告)号：US09671910B2

公开(公告)日：2017-06-06

申请号：US14522098

申请日：2014-10-23

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Leonard Dinu ,  Chao Chao Zhang ,  Dianbo Guo ,  Chee Weng Cheong ,  Eng Jye Ng

IPC: G06F3/038 ,  G06F3/0354 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/03545 ,  G06F3/038 ,  G06F3/0416 ,  G06F2203/04104 ,  G06F2203/04106

Abstract: An electronic device may include a first controller associated with some channels of a digitizer having channels configured to receive a signal from a stylus, and with each channel having a direction. A second controller may be associated with channels of the digitizer not associated with the first controller. The first controller may scan for the signal at each channel associated with the first controller, and based on acquisition of the signal at a given channel associated with the first controller, calculate a property of the signal. The first controller may send the calculated property and the direction of the given channel to the second controller. The first controller and the second controller may scan for the signal at each channel having the direction of the given channel, at acquisition intervals based upon the calculated property.

公开(公告)号：US20160117047A1

公开(公告)日：2016-04-28

申请号：US14522098

申请日：2014-10-23

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Leonard Dinu ,  Chao Chao Zhang ,  Dianbo Guo ,  Chee Weng Cheong ,  Eng Jye Ng

IPC: G06F3/041 ,  G06F3/038 ,  G06F3/044 ,  G06F3/0354

CPC classification number: G06F3/044 ,  G06F3/03545 ,  G06F3/038 ,  G06F3/0416 ,  G06F2203/04104 ,  G06F2203/04106

Abstract: An electronic device may include a first controller associated with some channels of a digitizer having channels configured to receive a signal from a stylus, and with each channel having a direction. A second controller may be associated with channels of the digitizer not associated with the first controller. The first controller may scan for the signal at each channel associated with the first controller, and based on acquisition of the signal at a given channel associated with the first controller, calculate a property of the signal. The first controller may send the calculated property and the direction of the given channel to the second controller. The first controller and the second controller may scan for the signal at each channel having the direction of the given channel, at acquisition intervals based upon the calculated property.

Abstract translation: 电子设备可以包括与数字转换器的一些通道相关联的第一控制器，其具有被配置为从触控笔接收信号的通道，并且每个通道具有方向。 第二控制器可以与不与第一控制器相关联的数字转换器的通道相关联。 第一控制器可以扫描与第一控制器相关联的每个信道处的信号，并且基于在与第一控制器相关联的给定信道处获取信号，计算信号的属性。 第一控制器可以将计算的属性和给定信道的方向发送到第二控制器。 第一控制器和第二控制器可以基于计算的属性以采集间隔扫描具有给定信道的方向的每个信道处的信号。