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METHOD, APPARATUS AND ARTICLE FOR DETECTION OF TRANSPONDER TAGGED OBJECTS, FOR EXAMPLE DURING SURGERY

  • US 20150272688A1
  • Filed: 07/09/2014
  • Published: 10/01/2015
  • Est. Priority Date: 03/31/2014
  • Status: Active Grant
First Claim
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1. A method of operating a transponder detection device that includes at least one processor, at least one nontransitory processor-readable medium communicatively coupled to the at least one processor and which stores at least one of instructions or data executable by the at least one processor, the method comprising:

  • during each of a first plurality of successive interrogation cycles,emitting a periodic electromagnetic interrogation signal during a transmit portion of the interrogation cycle;

    receiving electromagnetic signals during a receive response portion of the interrogation cycle that follows the transmit portion of the interrogation cycle; and

    waiting a first delay period before a start of each of the successive interrogation cycles of the first plurality of interrogation cycles, the first delay period for the first plurality of interrogation cycles equal to a first fraction of a nominal tag response signal period;

    during each of a second plurality of successive interrogation cycles,emitting a periodic electromagnetic interrogation signal during a transmit portion of the interrogation cycle;

    receiving electromagnetic signals during a receive response portion of the interrogation cycle that follows the transmit portion of the interrogation cycle; and

    waiting a second delay period before a start of each of the successive interrogation cycles in the second plurality of interrogation cycles, the second delay period for the second plurality of interrogation cycles equal to a second fraction of the nominal tag response signal period, the second fraction of the nominal tag response signal period different from the first fraction of the nominal tag response signal period.

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