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Multiple touch resolve

  • US 8,564,546 B1
  • Filed: 02/27/2009
  • Issued: 10/22/2013
  • Est. Priority Date: 02/27/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • measuring a capacitance of a plurality of capacitance sensors;

    identifying at least one peak sensor of the plurality of capacitance sensors;

    in a first subtraction function, subtracting a first predetermined value from the measured capacitance of each of the plurality of capacitance sensors;

    in a first summing function, summing the result of the first subtraction function for the plurality of capacitance sensors; and

    in a first comparing function, comparing the result of the first summing function to a first threshold; and

    if the result of the first summing function is greater than the first threshold, increasing the first predetermined value and repeating the first subtraction, summing, and comparing function, andif the result of the first summing function is not greater than the first threshold, calculating a centroid for each of the at least one peak sensor.

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