Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2006-02-07
2006-02-07
Zimmerman, Brian (Department: 2635)
Communications: electrical
Selective
Interrogation response
C370S442000, C370S458000
Reexamination Certificate
active
06995655
ABSTRACT:
An RF tag system, comprising an RF reader configured to issue a plurality of different RF commands and to provide a continuous RF illumination field, and a plurality of RF tags respectively including a permanent identification; wherein the plurality of RF tags are configured to respond to a certain RF command from the RF reader by transmitting their respective identifications by way of backscatter modulation of the RF illumination field, and wherein the RF tags are further configured to perform the responding by way of respective independently selected random radio frequencies and timeslots from respective pre-defined ranges of radio frequencies and timeslots.
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Ertin Emre
Hughes Michael A.
Lechelt Wayne M.
Pratt Richard M.
Priddy Kevin L.
Battelle (Memorial Institute)
Well St. John P.S.
Yang Clara
Zimmerman Brian
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