Received power level for tag processing prioritization
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United States of America Patent
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Dec 8, 2020
Grant Date -
Oct 26, 2017
app pub date -
Jul 10, 2017
filing date -
Nov 18, 2006
priority date (Note) -
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Abstract
A method includes transmitting, by a radio frequency identification (RFID) reader, a series of RF signals to RFID tags in a time sequence. A first RF signal includes a first message for responding when received signal strength corresponds to a first power level and a second RF signal includes a second message for responding when the received signal strength of the RF signal corresponds to a second power level. The method further includes receiving, by the RFID reader, a first set of responses from a first set of RFID tags that received the first and second RF signals at a received signal strength corresponding to the first power level. The method further includes receiving, by the RFID reader, a second set of responses from a second set of RFID tags that received the first and second RF signals at a received signal strength corresponding to the second power level.
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