Invention Grant
- Patent Title: Techniques for using a touch screen to perform ear detection using emulated self capacitance sensing
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Application No.: US17230317Application Date: 2021-04-14
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Publication No.: US11301097B2Publication Date: 2022-04-12
- Inventor: Kusuma Adi Ningrat , Cam Chung La
- Applicant: STMicroelectronics Asia Pacific Pte Ltd
- Applicant Address: SG Singapore
- Assignee: STMicroelectronics Asia Pacific Pte Ltd
- Current Assignee: STMicroelectronics Asia Pacific Pte Ltd
- Current Assignee Address: SG Singapore
- Agency: Crowe & Dunlevy
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/0488 ; G06F3/041 ; G06F3/04883

Abstract:
A touch-screen-controller (TSC) performs mutual sensing to acquire touch strength values from a touch matrix formed by capacitively intersecting conductive lines. For each line, the TSC generates an emulated self capacitance value from an associated touch strength value based upon a position of that line compared to a location on the touch matrix adjacent to which a first touch type is expected to occur, and determines presence of the first touch type adjacent to the touch matrix based upon the emulated values. The emulated values for each conductive line may be weighted based upon its closeness to the location where the first touch type is expected to occur. The weighting may be zero if its associated conductive line is outside of the location where the first touch type is expected to occur, and may be one if inside of the location where the first touch type is expected to occur.
Public/Granted literature
- US20210382576A1 TECHNIQUES FOR USING A TOUCH SCREEN TO PERFORM EAR DETECTION USING EMULATED SELF CAPACITANCE SENSING Public/Granted day:2021-12-09
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