Systems and methods for RFID tag arbitration where RFID tags generate multiple random numbers for different arbitration sessions
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United States of America Patent
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Jun 26, 2012
Grant Date -
Oct 27, 2011
app pub date -
Jul 5, 2011
filing date -
Jan 30, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A radio frequency identification device (RFID) tag includes a processor, a memory configured to store an identification number that distinguishes the tag from other tags, and a transponder coupled to the memory and the processor. The tag arbitrates by selecting a random number in response to an inventory query from a reader. The tag responds to the reader depending on the random number selected. The tag is configured for multiple concurrent inventory session arbitrations with multiple readers by separately storing random numbers for respective inventory session arbitrations.
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