Methods and apparatus for performing capacitive touch sensing and proximity detection

Embodiments include methods and apparatus for performing capacitive touch sensing and proximity detection. Electrode selection circuitry (310) establishes (606) a first connection with an individual electrode of a plurality of individual electrodes (206, 207, 208) in order to receive (608) one or mo...

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Hauptverfasser: OSOINACH BRYCE T, TEEGARDEN CRAIG R, MEJIA SIMON
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:Embodiments include methods and apparatus for performing capacitive touch sensing and proximity detection. Electrode selection circuitry (310) establishes (606) a first connection with an individual electrode of a plurality of individual electrodes (206, 207, 208) in order to receive (608) one or more first signals indicating a state of the individual electrode, and establishes (630) second connections with a proximity electrode that comprises multiple ones of the plurality of individual electrodes (206, 207, 208) in order to receive (632) one or more second signals indicating a state of the proximity electrode. A processing system performs (616) a first analysis on the first signals to determine whether to perform (620) a first updating process for an individual electrode baseline value, and performs (640) a second analysis on the second signals to determine whether to perform (644) a second updating process for a proximity electrode baseline value. In an embodiment, the first analysis and the second analysi