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Touch and hover signal drift compensation

  • US 8,614,693 B2
  • Filed: 09/30/2010
  • Issued: 12/24/2013
  • Est. Priority Date: 08/27/2010
  • Status: Expired due to Fees
First Claim
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1. A touch and hover sensing device comprising:

  • a sensing panel configured to sense an object touching or hovering over the panel;

    a grounding device configured to periodically interact with the sensing panel; and

    a touch and hover control system configured to measure capacitance of the panel when the grounding device interacts with the panel and to set the measurement as a baseline capacitance of the device.

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