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Method for associating and RFID tag with a known region

  • US 8,421,627 B2
  • Filed: 08/21/2008
  • Issued: 04/16/2013
  • Est. Priority Date: 08/21/2008
  • Status: Active Grant
First Claim
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1. A method of determining an identity of one or more radio-frequency identification (RFID) tags of a plurality of RFID tags within a region, the method comprising:

  • transmitting an interrogation signal with an RFID reader corresponding to a read zone having a first size;

    receiving a response from a first RFID tag of the plurality of RFID tags located within the read zone;

    recording an indicator of the response for the first RFID tag that designates the first RFID tag as a first recorded tag;

    increasing the size of the read zone to a second size within the region;

    receiving a second response from a second RFID tag of the plurality of RFID tags if the second RFID tag is located within the read zone having the second size;

    recording a second indicator of the second response for the second RFID tag that designates the second RFID tag as a second recorded tag if the second response is received from the second RFID tag; and

    associating the first recorded tag with the region; and

    associating the second recorded tag with the region if the second indicator designates the second RFID tag as the second recorded tag.

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