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Physical object location apparatus and method and a graphic display device using the same

  • US 6,690,156 B1
  • Filed: 07/28/2000
  • Issued: 02/10/2004
  • Est. Priority Date: 07/28/2000
  • Status: Expired due to Term
First Claim
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1. A method of detecting each one of a set of physical objects, placed over a graphic display device, each of said objects comprising an identifier, the method comprising:

  • continuously electronically refreshing a displayed playing image on said graphic display device, placing at least one of said objects at a location over said displayed playing image such that said object is separated from said graphic display device and said displayed playing image by a transparent conductive foil, detecting said identifier by means of a detecting unit associated with said transparent conductive foil, outputting a signal from said detecting unit, which signal bears information of said location, and determining from said signal, information of said location.

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