- 专利标题: Reduction of noise in touch data samples via sampling during porch time of Vsync and Hsync signals
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申请号: US16117277申请日: 2018-08-30
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公开(公告)号: US10558311B2公开(公告)日: 2020-02-11
- 发明人: Baranidharan Karuppusamy , Chaochao Zhang , Kusuma Adi Ningrat
- 申请人: STMicroelectronics Asia Pacific Pte Ltd
- 申请人地址: SG Singapore
- 专利权人: STMicroelectronics Asia Pacific Pte Ltd
- 当前专利权人: STMicroelectronics Asia Pacific Pte Ltd
- 当前专利权人地址: SG Singapore
- 代理机构: Crowe & Dunlevy
- 主分类号: G06F3/044
- IPC分类号: G06F3/044 ; G06F3/041
摘要:
Disclosed herein is a touch screen controller for controlling touch sensing in a touch screen display, the touch screen display having a display layer controlled as a function of horizontal sync and vertical sync signals and a capacitive touch array comprised of drive lines and sense lines. The touch screen controller includes a driver and control circuitry. The control circuitry is configured to cause the driver to generate a driving signal on the drive lines during assertion of the horizontal sync signal, and cause the driver to generate the driving signal on the drive lines during assertion of the vertical sync signal. Analog touch sensing circuitry is configured to generate analog touch data as a function of signals on the sense lines resulting from generation of the drive signal on the drive lines.
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