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Compensating for multi-touch signal bias drift in touch panels

  • US 8,698,015 B2
  • Filed: 12/18/2009
  • Issued: 04/15/2014
  • Est. Priority Date: 12/18/2009
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • selecting a sensor in an array of capacitive sensors;

    determining a row intensity for the selected sensor, wherein the row intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same row of the array as the selected sensor;

    determining a column intensity for the selected sensor, wherein the column intensity is determined based at least in part on a respective intensity associated with each of at least one additional sensor in a same column of the array as the selected sensor; and

    compensating the selected sensor for multi-touch signal bias drift, wherein the compensating includes adjusting an intensity of the selected sensor based at least in part on the row intensity and the column intensity.

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