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Touch systems and methods including rejection of unintentional touch signals

  • US 10,216,330 B2
  • Filed: 06/30/2015
  • Issued: 02/26/2019
  • Est. Priority Date: 07/02/2014
  • Status: Active Grant
First Claim
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1. A method of determining a touch location on a touch surface of a touch panel comprising a matrix of intersecting electrodes with nodes at intersections of the electrodes, the method comprising:

  • discriminating between one or more intentional touches and one or more unintentional touches on the touch surface using first criteria; and

    for each touch identified as an intentional touch, discriminating between a finger touch and a pen touch using second criteria, wherein discriminating between the finger touch and the pen test comprises identifying the touch as a pen touch if a distance between a touch and a profile of a previously identified intentional or unintentional touch is greater than a distance threshold.

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