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Techniques for reducing jitter for taps

  • US 20080309630A1
  • Filed: 06/13/2007
  • Published: 12/18/2008
  • Est. Priority Date: 06/13/2007
  • Status: Active Grant
First Claim
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1. A method for suppressing position change in a detected image of touch to assist in distinguishing tapping motions from sliding motions on a touch sensor panel, comprising:

  • computing a time instability value Tinst in accordance with a Tinst function that provides a first amount of suppressed position change per frame for a given time tpress since the image of touch was detected; and

    subtracting the first amount of suppressed position change per frame from a first position change per frame value for the detected image of touch to obtain a suppressed position change per frame for the detected image of touch.

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