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CALIBRATION FOR PRESSURE EFFECTS ON TOUCH SENSOR PANELS

  • US 20130234977A1
  • Filed: 06/06/2012
  • Published: 09/12/2013
  • Est. Priority Date: 03/06/2012
  • Status: Active Grant
First Claim
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1. A method for calibrating a touch sensor panel, comprising:

  • with a force applied to the touch sensor panel, varying a parameter of touch sensor panel drive or sense circuitry associated with at least one touch node of the panel and capturing a range of first output values of the sense circuitry;

    with no force applied to the touch sensor panel, varying the parameter of the touch sensor panel drive or sense circuitry associated with the at least one touch node and capturing a range of second output values of the sense circuitry; and

    selecting a particular value of the parameter of the touch sensor panel drive or sense circuitry that improves a performance metric that is a function of the first and second output values.

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