Method for detecting portable objects and system for...

Details Method for detecting portable objects and system for... Method for detecting portable objects and system for...

2005-12-06

2005-12-06

Horabik, Michael (Department: 2635)

Communications: electrical

Selective

Interrogation response

C340S010400, C342S445000, C343S853000

Reexamination Certificate

active

06972663

ABSTRACT:
A method for detecting portable objects from a network of N antennae controlled by a centralized management unit. Signals are simultaneously emitted by the management unit to all antennae. Resulting response signals from antennae that have detected a portable object are received by the management unit. Each object thus detected is successively selected from these signals according to a pre-established sequence. The invention applies in particular to access control.

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patent: 0543500 (1993-05-01), None
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patent: 0632420 (1995-01-01), None
patent: 0716399 (1996-06-01), None
patent: WO98/16849 (1998-04-01), None
patent: WO98/38600 (1998-09-01), None

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