Identification system

Details Identification system Identification system

G - Physics

01

S

343/19

G01S 13/74 (2006.01) G06K 7/00 (2006.01) G07C 9/00 (2006.01) G08B 13/24 (2006.01)

Patent

CA 2006622

A B S T R A C T Title: Identification system An identification system for wireless electronic identification and data transmission, comprising a reading unit and at least one electronic label comprising a resonant circuit and carrying data stored in a memory device of the label, which data can be read wirelessly when the label is introduced into a high-frequency interrogation field formed by a transmitter of the reading unit. The reading unit includes a control device which, in operation, periodically switches the interrogation field on and off and in the time intervals when the field is switched off switches on a receiver capable of detecting a signal transmitted by a label. The at least one label includes a modulator which in the time intervals when the field is switched off can modulate the quality factor Q of the resonant circuit in dependence on the data stored in the memory device.

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