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Method and system for calibrating an acoustic touchscreen

  • US 8,493,332 B2
  • Filed: 06/21/2007
  • Issued: 07/23/2013
  • Est. Priority Date: 06/21/2007
  • Status: Active Grant
First Claim
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1. A method for calibrating an Acoustic Pulse Recognition (APR) touch substrate having a plurality of microphones mounted thereon, comprising:

  • touching an APR touch substrate at N comparison touch points;

    acquiring N audio profiles, each of the N audio profiles being associated with one of the N comparison touch points; and

    selecting a predetermined calibration file from within a plurality of predetermined calibration files, said selecting being based on the N audio profiles, the predetermined calibration file comprising audio profiles associated with coordinate locations on the touch substrate, wherein each of said plurality of predetermined calibration files is based on a group of similar calibration files acquired from APR touch substrates other than said APR touch substrate.

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