System and method for controlling range of successful interrogation by RFID interrogation device
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United States of America Patent
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Issued Date -
Dec 22, 2005
app pub date -
Feb 24, 2005
filing date -
Feb 24, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention is directed to control an range of successful interrogation by an RFID reader so that tags located in a specific physical area are likely to be successfully interrogated by the reader while the chance of the reader reading tags in other locations are minimized. In one embodiment of the present invention, a plurality of delineation RFID tags with known unique identifying numbers are placed in an areas of interest or wanted region, and the reader is characterized to determine an optimal setting for at least one transmission parameter based on responses from the delineation RFID tags and a predetermined figure of merit.
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