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Electronic locating systems

  • US 7,902,971 B2
  • Filed: 01/18/2008
  • Issued: 03/08/2011
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Fees
First Claim
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1. A system for locating a tagged object comprising:

  • at least one transmitter configured to transmit an interrogation signal associated with a defined interrogation zone and a specific tag;

    the specific tag including an interrogation signal receiving structure and a response generator configured to generate a coded response signal in response to the interrogation signal, wherein only the specific tag is configured to respond to the interrogation signal, wherein the specific tag includes a memory configured to store a set of locations and a comparator configured to compare the interrogation signal to each of the set of locations; and

    at least one receiver for detecting the response signal.

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