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Method and Device for Adjusting Brightness of an Optical Touch Panel

  • US 20110074737A1
  • Filed: 09/30/2010
  • Published: 03/31/2011
  • Est. Priority Date: 09/30/2009
  • Status: Active Grant
First Claim
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1. A method for adjusting brightness of an optical touch panel, said optical touch panel comprising a microprocessor, a display module including a back light source, and an optical position detection device including optical transmitting devices and optical receiving devices, said method comprising:

  • detecting, via said optical receiving devices, a current ambient light level on said display module;

    generating, via said optical receiving devices, a current ambient light level signal indicative of said current ambient light level and transmitting said current ambient light level signal to said microprocessor; and

    adjusting, via said microprocessor, brightness of said back light source based on said current ambient light level signal.

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