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Integrated button activation sensing and proximity sensing

  • US 20080246723A1
  • Filed: 06/26/2007
  • Published: 10/09/2008
  • Est. Priority Date: 04/05/2007
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • detecting a presence of a conductive object on a device by individually measuring a capacitance on a plurality of sensor elements of the device;

    coupling a group of sensor elements of the plurality of sensor elements together; and

    detecting a presence of the conductive object in proximity to the device by collectively measuring a capacitance on the group of coupled sensor elements.

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