Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2006-03-21
2006-03-21
Stcyr, Daniel (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C340S572800, C340S572800, C340S010100
Reexamination Certificate
active
07014111
ABSTRACT:
The invention concerns a reader (10) for identifying passive transponders (12) comprising an antenna for receiving a first signal (Tx) from the reader and for transmitting a second signal (Rx). The reader comprises: a time base (54) generating a sinusoidal signal, a control circuit (64), a modulator (56) for transmitting to the control circuit (64) data to modulate the sinusoidal signal so as to generate a signal carrying commands which, when it is received by the antenna of said transponder, forms said first signal (Tx), a demodulator (58), a decoder (60), a communication interface (62) and an antenna (14). The demodulator (60), which is connected to the antenna (14) to receive the second signal (Rx), comprises two multipliers (76, 78), one (78) being of the inverter type, and an adder (70) designed to combine the data derived from the multipliers (76, 78).
REFERENCES:
patent: 5084699 (1992-01-01), DeMichele
patent: 6154635 (2000-11-01), Ohta
patent: 6307468 (2001-10-01), Ward, Jr.
patent: 6362738 (2002-03-01), Vega
patent: 2003/0021367 (2003-01-01), Smith
patent: 2 300 318 (1996-10-01), None
patent: WO 99/67736 (1999-12-01), None
“CID Demokit Application Note on Transceiver Unit” EM Microelectronic—Marin SA (Switzerland).
Benoit Martial
Bui Ngoc-Chau
Cassi Vincent
Chatelain Jean-Daniel
Gaudenzi Yves
Hess Daniel A.
MBBS Holding S.A.
Stcyr Daniel
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