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Object identification system with adaptive transceivers and methods of operation

  • US 20020033757A1
  • Filed: 03/09/2001
  • Published: 03/21/2002
  • Est. Priority Date: 06/02/1998
  • Status: Active Grant
First Claim
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1. A communication system operative over a common medium, the system comprising:

  • a. a plurality of transceivers, each transceiver comprising;

    (1) a resonant circuit;

    (2) an antenna coupled to the resonant circuit;

    (3) a transmitter; and

    (4) a receiver; and

    b. a monitor comprising;

    (1) a first transmitter;

    (2) a first receiver; and

    (3) a processor that performs a method comprising;

    transmitting into the medium from the first transmitter a first frequency for a first duration;

    after lapse of the first duration, receiving via the first receiver a response signal from the medium from at least one of the resonant circuits;

    determining a second frequency from the received response signal; and

    performing transceiver communication via the medium using the second frequency.

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