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Capacitive side position extrapolation

  • US 10,078,406 B2
  • Filed: 03/31/2016
  • Issued: 09/18/2018
  • Est. Priority Date: 03/31/2016
  • Status: Active Grant
First Claim
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1. A processing system, comprising:

  • sensor circuitry configured to;

    drive sensing signals on a plurality of sensor electrodes of a sensing region, the sensing region comprising a surface sensing region,acquire a mutual capacitive measurement comprising effects of the sensing signals, andacquire a first absolute capacitive measurement comprising effects of the sensing signals; and

    processing circuitry configured to;

    perform a first comparison of the mutual capacitive measurement and the first absolute capacitive measurement to obtain a comparison value,determine whether the comparison value exceeds a first threshold, anddetect, in response to determining that the comparison value exceeds the first threshold, a presence of an input object proximate to a side surface of an input device.

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