Freescale Semiconductor,inc.

Nxp USA, Inc.

Simon Mejia

Bryce T Osoinach

Craig R Teegarden

Dennis Hicks

Christopher Liebelt

Karen L Collins

Michael T Young

Embodiments include methods and apparatus for performing capacitive touch sensing and proximity detection. Electrode selection circuitry establishes a first connection with an individual electrode of a plurality of individual electrodes in order to receive one or more first signals indicating a state of the individual electrode, and establishes second connections with a proximity electrode that comprises multiple ones of the plurality of individual electrodes in order to receive one or more second signals indicating a state of the proximity electrode. A processing system performs a first analysis on the first signals to determine whether to perform a first updating process for an individual electrode baseline value, and performs a second analysis on the second signals to determine whether to perform a second updating process for a proximity electrode baseline value. In an embodiment, the first analysis and the second analysis are different from each other.

Methods and apparatus for performing capacitive touch sensing and proximity detection

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Tolleson, AZ, United States of America

Simon Mejia