Telecommunications – Radiotelephone system – Security or fraud prevention
Reexamination Certificate
2007-12-11
2007-12-11
Feild, Joseph (Department: 2617)
Telecommunications
Radiotelephone system
Security or fraud prevention
C340S010100, C340S506000, C455S456100
Reexamination Certificate
active
10712325
ABSTRACT:
An electromagnetic transponder intended to draw the power necessary to its operation of from a field radiated by a terminal of transmission of a carrier at a first supply frequency and to back-modulate the received signal at the rate of a sub-carrier at a second frequency lower than the first one, and comprising means capable of demodulating and decoding signals modulated by said sub-carrier, as well as a system of communication between such transponders.
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“Part 2: Radio Frequency Power and Signal Interface,”ISO/IEC FCD 15693-2/Identification Cards—Contactless Integrated Circuit(s) Cards—Vicinity Cards, Mar. 9, 1999, pp. 1-16.
“Part 2: Radio Frequency Power and Signal Interface,”Final Committee Draft ISO/IEC 14443-2/Identification Cards—Contactless Integrated Circuit(s) Cards—Vicinity Cards, Mar. 26, 1999, pp. 1-16.
Conraux Jerome
Rizzo Pierre
de Guzman Dennis M.
Doan Kiet
Feild Joseph
Jorgenson Lisa K.
Seed IP Law Group PLLC
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