Invention Grant
- Patent Title: Dual measurement for capacitive touch sensing and related systems, methods and devices
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Application No.: US17645227Application Date: 2021-12-20
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Publication No.: US12216858B2Publication Date: 2025-02-04
- Inventor: Feargal Cleary , Rian Whelan
- Applicant: Microchip Technology Incorporated
- Applicant Address: US AZ Chandler
- Assignee: Microchip Technology Incorporated
- Current Assignee: Microchip Technology Incorporated
- Current Assignee Address: US AZ Chandler
- Agency: TraskBritt
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
One or more examples relate, generally, to a method for capacitive touch sensing that includes: performing first self-capacitance measurement of an electrode of a touch sensor while a driven shield-signal is provided to at least a portion of shielding of the electrode; determining a first touch sensing result at least partially responsive to determining that a value representing performing first self-capacitance measurement exceeds a first threshold value; performing second self-capacitance measurement of the electrode of the touch sensor while a ground signal is provided to at least the portion of shielding of the electrode; determining a second touch sensing result at least partially responsive to determining that a value representing performing second self-capacitance measurement exceeds a second threshold value, the second threshold value different from the first threshold value; and determining a touch result responsive to both the first touch sensing result and the second touch sensing result being indicative of a touch.
Public/Granted literature
- US20220147181A1 DUAL MEASUREMENT FOR CAPACITIVE TOUCH SENSING AND RELATED SYSTEMS, METHODS AND DEVICES Public/Granted day:2022-05-12
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