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Methods of identifying RFID tag for preventing RFID tag collision, RFID reader and RFID tag using the same

  • US 20100019883A1
  • Filed: 11/19/2008
  • Published: 01/28/2010
  • Est. Priority Date: 07/25/2008
  • Status: Abandoned Application
First Claim
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1. A method of identifying a plurality of radio frequency identification (RFID) tags in an RFID reader, comprising:

  • generating a Query command to transmit the Query command to an RFID tag in a ready state;

    receiving an error detection code from the RFID tag that received the Query command;

    when the error detection code is received without a collision, generating an acknowledgement (ACK) command to transmit the acknowledgement (ACK) command to the RFID tag that transmitted the error detection code; and

    receiving tag information including a protocol control (PC) and an electronic product code (EPC) of the RFID tag that transmitted the error detection code.

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