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Method and system for detecting touch events based on redundant validation

  • US 20090009488A1
  • Filed: 07/02/2007
  • Published: 01/08/2009
  • Est. Priority Date: 07/02/2007
  • Status: Active Grant
First Claim
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1. A method of detecting a touch event on an acoustic fingerprint based touch system, comprising:

  • digitizing at least two signals to form first and second sets of digitized signals, wherein the at least two signals are received from at least two sensors associated with a touch panel;

    performing a frequency transform upon the first and second sets of digitized signals to form first and second frequency transform data sets of frequency components;

    constructing at least first and second live fingerprints wherein at least one of the first and second live fingerprints is based on the first and second frequency transform data sets; and

    identifying a touch location based on the at least first and second live fingerprints.

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