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Interactive communication systems

  • US 20050280636A1
  • Filed: 06/06/2005
  • Published: 12/22/2005
  • Est. Priority Date: 06/04/2004
  • Status: Active Grant
First Claim
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1. A device enabling a non-interactive presentation surface to be used in an interactive communication system, the device comprising:

  • a sensor system adapted to sense an instrument in proximity to the non-interactive presentation surface, the sensor system providing location data of the instrument to a tracking system calibrating a processing device with the instrument via the location data, wherein the device is positioned in proximity to a bottom edge of the non-interactive presentation surface.

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