Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2006-05-16
2006-05-16
Zimmerman, Brian (Department: 2635)
Communications: electrical
Selective
Interrogation response
C340S572500, C455S067110, C455S106000, C455S107000
Reexamination Certificate
active
07046121
ABSTRACT:
The invention concerns a terminal generating a high-frequency electromagnetic field by means of an oscillating circuit, adapted to co-operate with at least a transponder when the latter enters said field, comprising means (37) for regulating the phase of the signal in the oscillating circuit with respect to a reference value, and means for detecting, on the basis of a current measurement in the oscillating circuit and a voltage measurement at the terminals of a capacitive element (31) of said oscillating circuit, an electric signature of a transponder.
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Jorgenson Lisa K.
Morris James H.
STMicroelectronics S.A.
Wolf Greenfield & Sacks P.C.
Yang Clara
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