Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2005-04-12
2005-04-12
Zimmerman, Brian (Department: 2635)
Communications: electrical
Selective
Interrogation response
C340S010320
Reexamination Certificate
active
06879246
ABSTRACT:
A terminal for generating a high-frequency electromagnetic field by an oscillating circuit, adapted to cooperating with at least one transponder when the transponder enters this field, and a method for establishing a communication between the devices, including circuitry for regulating the signal phase in the oscillating circuit with respect to a reference value and circuitry for evaluating, based on a measurement of the current in the oscillating circuit, the minimum number of transponders present in the field.
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Jorgenson Lisa K.
Morris James H.
STMicroelectronics S.A.
Wolf Greenfield & Sacks P.C.
Zimmerman Brian
LandOfFree
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