Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2006-03-31
2011-11-22
Zimmerman, Brian (Department: 2612)
Communications: electrical
Selective
Interrogation response
C332S117000
Reexamination Certificate
active
08063746
ABSTRACT:
A transponder detector is provided with capabilities for detecting the presence and type of a transponder in its read range while operating at low power. The transponder detector includes an antenna assembly and a detection signal generator circuit coupled to the antenna assembly. The detection signal generator circuit is capable of generating a progression of detection signals on the antenna assembly across a range of frequencies. The transponder detector further includes a response signal receiver circuit coupled to the antenna assembly to receive a progression of response signals from the antenna assembly resulting from the progression of detection signals. A controller is coupled to the response signal receiver circuit which determines the presence and type of the transponder based on an evaluation of a transponder detection parameter in the progression of response signals.
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Assa Abloy AB
Jiang Yong Hang
Sheridan & Ross P.C.
Zimmerman Brian
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