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METHOD AND SYSTEM FOR LOCATING A HAND-HELD TERMINAL

  • US 20110156870A1
  • Filed: 12/30/2009
  • Published: 06/30/2011
  • Est. Priority Date: 12/30/2009
  • Status: Active Grant
First Claim
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1. A system for determining a location of an RFID reader, the system comprising:

  • a plurality of transmitters having known reference points, each transmitter comprising a simulation circuit for transmitting a sequence of unique RFID pseudo tag signals, each unique RFID pseudo tag signal in the sequence having a unique range of transmission, each unique RFID pseudo tag signal in the sequence comprising a tag identification indicating the range of transmission of the pseudo tag signal and a transmitter identification value indicating the transmitter transmitting the pseudo tag signal;

    an RFID reader for receiving a plurality of sequences of the unique RFID pseudo tag signals from the plurality of transmitters, and distinguishing between each unique RFID pseudo tag signal received; and

    a location calculator for calculating the location of the RFID reader based on the plurality of the received tag identifications and the plurality of the received transmitter identification values.

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