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Reading protocol for transponders of electronic identification system

  • US 7,019,664 B2
  • Filed: 06/12/2001
  • Issued: 03/28/2006
  • Est. Priority Date: 06/12/2000
  • Status: Expired due to Term
First Claim
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1. A method of reading a plurality of transponders forming part of an electronic identification system also comprising a reader, the method comprising the steps of:

  • causing the reader to lock onto a first part of a digital sequence being transmitted by one of said transponders;

    causing the reader to broadcast a mute signal immediately to mute all of said transponders not yet transmitting;

    causing the reader to transmit a separate first command to cause said one transponder to transmit a second part of the digital sequence; and

    receiving and reading said second part of the digital sequence at the reader.

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