Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2006-02-28
2006-02-28
Horabik, Michael (Department: 2635)
Communications: electrical
Selective
Interrogation response
C340S010100, C340S010340, C340S010200, C340S572100, C340S572700, C340S480000, C340S870320, C340S870310, C342S118000, C342S127000
Reexamination Certificate
active
07005967
ABSTRACT:
A terminal for generating an electromagnetic field adapted to communicating with at least one transponder, and a method for controlling such a terminal including: an oscillating circuit adapted to being excited by a remote supply signal of the transponder; an amplitude demodulator for detecting possible data transmitted by the transponder; circuitry for regulating the signal phase in the terminal's oscillating circuit on a reference value; circuitry for measuring variables linked to the current in the oscillating circuit and to the voltage thereacross; and circuitry for comparing current values of these variables to predetermined values, to determine the presence of a transponder.
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Brown Vernal
Horabik Michael
Jorgenson Lisa K.
Morris James H.
STMicroelectronics S.A.
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