Methods and apparatus for reducing power consumption of an...

H - Electricity – 04 – Q

Patent

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H04Q 5/22 (2006.01)

Patent

CA 2630993

A power management method for a transponder having a plurality of circuits including at least a first circuit having a first active state requiring at least a first power level, and a second circuit having a second active state requiring at least a second power level greater than the first power level includes receiving a reader device signal in the first circuit, determining in the first circuit, based on information included in the reader signal, whether the reader signal requires a circuit other than the first circuit to operate, and causing the first circuit to provide a wake-up signal and the reader signal to the second circuit if it is determined that the reader signal requires a circuit other than the first circuit to operate. The wake-up signal causes the second circuit to move from an inactive state to the second active state.

L'invention concerne un procédé permettant de gérer le courant d'un transpondeur et comprenant une pluralité de circuits, notamment au moins un premier circuit ayant un premier mode activé nécessitant au moins un premier niveau de puissance, et un deuxième circuit ayant un deuxième mode activé nécessitant au moins un deuxième niveau de puissance qui est supérieur au premier niveau de puissance. Selon ce procédé: le premier circuit reçoit un signal d'un dispositif lecteur ; sur la base d'une information contenue dans le signal de lecteur, le premier circuit détermine si le signal de lecteur exige un circuit autre que le premier circuit pour être opérationnel et, si le signal de lecteur nécessite un circuit autre que le premier circuit pour être opérationnel, le premier circuit envoie un signal de relance et le signal de lecteur au deuxième circuit. Le signal de relance fait passer le deuxième circuit du mode désactivé au deuxième mode activé.

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