Identification system

G - Physics – 06 – K

Patent

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Details

G06K 19/07 (2006.01) G06K 7/00 (2006.01)

Patent

CA 2365535

An electronic tag (10) is provided which includes processor means and transmitter circuitry (26). The processor means, which is typically a micro- controller (16), is programmed to provide a modulation control signal which includes unique identification data which at least identifies the tag (10) but may include further data. The transmitter circuitry (26) is connected to the processor means and to an antenna (29) for transmission of the unique identification data. The transmitter circuitry (26) is powered by the modulation control signal. Preferably, the transmitter circuitry (26) is exclusively powered by the modulation control signal of the processor means. The invention extends to a receiver (12) for receiving a transmission from the tag (10) and to a system including a plurality of receivers (12) and tags (10). The invention also extends to a method of communicating data from an electronic tag (10) which includes driving transmitter circuitry (26) of the tag with a modulation control signal which substantially powers the transmitter circuitry (26).

L'invention concerne une étiquette électronique comprenant une unité de traitement et un circuit de transmission. L'unité de traitement, qui se présente normalement sous forme de micro-contrôleur, est programmée pour générer un signal de commande de la modulation renfermant des données d'identification uniques identifiant au moins l'étiquette et susceptible de contenir d'autres données. Le circuit de transmission est connecté à l'unité de traitement et à une antenne en vue de la transmission de données d'identification uniques et il est mis en route par le signal de commande de la modulation provenant de l'unité de traitement. L'invention concerne aussi un récepteur permettant de recevoir une transmission provenant de l'étiquette ainsi qu'un système équipé d'une pluralité de récepteurs et d'étiquettes. L'invention concerne encore un procédé de communication de données en provenance d'une étiquette électronique renferment un circuit de transmission de l'étiquette avec un signal de commande de la modulation mettant en route le circuit de transmission.

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