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Transponder detector

  • US 5,739,766 A
  • Filed: 07/12/1995
  • Issued: 04/14/1998
  • Est. Priority Date: 07/12/1995
  • Status: Expired due to Term
First Claim
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1. A transponder detector apparatus comprising:

  • antenna means for radiating a power signal to an identification transponder of an unidentified type and for reading a response signal characteristic from the transponder;

    protocol select means for serially selecting each of a plurality of power signal and response signal characteristic parameters; and

    protocol analyzer means for determining whether the response signal characteristic matches the selected parameter and producing an identification match signal.

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