Method and system of information exchange between an...

Details Method and system of information exchange between an... Method and system of information exchange between an...

2008-05-06

2008-05-06

Zimmerman, Brian (Department: 2612)

Communications: electrical

Selective

Interrogation response

C340S010200, C340S010330, C340S003510

Reexamination Certificate

active

07369036

ABSTRACT:
A method and apparatus of information exchange between an interrogator device and a plurality of transponder devices are disclosed. Each of the transponder devices is equipped with a different binary identification code and is located in the magnetic field of the interrogator device, consisting in modifying the duration of the signals and/or the waveform of the signals transmitted by each transponder device according to the ratio between the signal transmitted by the transponder device and the ambient electromagnetic noise.

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