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Anti-collision method and system for reading data from multiple RFID tags

  • US 20120068829A1
  • Filed: 09/17/2011
  • Published: 03/22/2012
  • Est. Priority Date: 09/21/2010
  • Status: Abandoned Application
First Claim
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1. A radio frequency identification system, comprising:

  • a radio frequency (RF) caller for transmitting a calling message periodically through a RF calling channel;

    a plurality of radio frequency identifier (RFID) tags for listening the calling message on the RF calling channel, each responding the calling message by transmitting a tag message through a RF recording channel; and

    a RF recorder for receiving the tag message on the RF recording channel.

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