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Ultra-low Power, Optically-Interrogated Tagging and Identification System

  • US 20080094201A1
  • Filed: 10/17/2007
  • Published: 04/24/2008
  • Est. Priority Date: 09/26/2002
  • Status: Abandoned Application
First Claim
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1. An identification system, the system comprising:

  • an interrogator for transmitting at least one optical signal comprising an encoded identification associated with a selected tag, wherein each tag responds to a differently modulated optical signal, and for receiving information from a responding tag;

    a plurality of tags each containing a tag identification uniquely identifying the tag, each tag being responsive to a modulated optical signal whose encoded identification matches the tag identification; and

    associated with each of the tags, at least one transducer for imparting an observable signal upon response of the tag to the optical signal and for communicating information back to the interrogator.

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