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FREE-SPACE MULTI-DIMENSIONAL ABSOLUTE POINTER WITH IMPROVED PERFORMANCE

  • US 20080278445A1
  • Filed: 05/05/2008
  • Published: 11/13/2008
  • Est. Priority Date: 05/08/2007
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a handheld device having a pixelated sensor, an optical filter for passing a predetermined frequency band of radiation to the sensor, and a transmitter;

    electronic equipment having a display;

    at least two spaced-apart markers, each of which are positioned proximate to the display, the markers providing radiation at the frequency band passed by the optical filter,wherein the handheld device includes a processor coupled to receive image data of the markers from the sensor to compute coordinate data from the image data, the coordinate data requiring less data than the image data, the processor being coupled to the transmitter to transmit the coordinate data to the electronic equipment.

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