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Reader Control System

  • US 20080316019A1
  • Filed: 04/25/2006
  • Published: 12/25/2008
  • Est. Priority Date: 04/25/2005
  • Status: Active Grant
First Claim
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1. A method of inquiring RFID tag data by transmitting a control protocol message between an RFID reader and an RFID reader control unit of a terminal, the method comprising:

  • transmitting, from the RFID reader control unit to the RFID reader, an RFID reader tag data request message comprising a preamble and a header including information for indicating an RFID tag data read command, and if necessary, further comprising a payload and an end mark; and

    transmitting, from the RFID reader to the RFID reader control unit in response to the RFID reader tag data request message, a response message comprising a preamble, a header including information for indicating an response to the RFID tag data read command, a payload, and an end mark.

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