System for communicating by remote interrogating for...

G - Physics – 06 – K

Patent

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Details

G06K 7/08 (2006.01) G06K 7/00 (2006.01) G06K 7/10 (2006.01) G06K 19/07 (2006.01) H04B 7/24 (2006.01)

Patent

CA 2275956

The invention concerns a communication system between an interrogating transceiver and a plurality of transponders. This system enables the interrogating device to send to the transponders inhibiting commands without modifying the data contained in their memory. The invention more particularly concerns a communication system between an interrogating transceiver, capable of transmitting an energy field and at least a transponder comprising an integrated circuit including a memory, characterised in that in response to the initialisation, the transponder sends a message (ATR) carrying in particular an information (MOD) characteristic of its inhibiting mode and an information (RR) defining the duration of stand-by intervals (PV) between two messages during which the interrogating device is capable of sending one or several inhibiting commands according to the inscribed mode (MOD).

L'invention se rapporte à un système de communication entre un organe émetteur/récepteur interrogateur et une pluralité de transpondeurs. Ce système permet à l'organe interrogateur d'envoyer aux transpondeurs des commandes d'inhibition sans modifier les informations contenues dans leur mémoire. L'invention a plus particulièrement pour objet un système de communication entre un organe d'émission/réception interrogateur, apte à émettre un champ d'énergie, et au moins un transpondeur comprenant un circuit intégré comportant une mémoire, caractérisé en ce que, dans la réponse à l'initialisation, le transpondeur envoie un message (ATR) porteur notamment d'une information (MOD) caractéristique de son mode d'inhibition, et d'une information (RR) définissant la durée de périodes de veille (PV) entre deux messages durant lesquelles l'organe interrogateur est susceptible d'envoyer une ou plusieurs commande(s) d'inhibition selon le mode inscrit (MOD).

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