Credit transfer in metering systems

Details Credit transfer in metering systems Credit transfer in metering systems

G - Physics

07

F

G07F 15/00 (2006.01) G01F 15/00 (2006.01) G07F 7/02 (2006.01)

Patent

CA 2288805

A credit transfer system is provided for transferring credit, representing credited consumption of a metered service G issued to a consumer, to a consumer metering apparatus (1, 2) which is selectively operable to cut-off the supply of the service to the consumer. The system comprises payment means (2) for controlling supply of the metered service G by the consumer metering apparatus in dependence on received credit. The payment means (2) has a memory for storing received credit data indicative of the total of all credit ever received by the payment means. The system includes a portable data storage device (3), associated with the payment means (2), for storing issued credit data indicative of the total of all credit ever issued for the payment means (2). The system also includes means for verifying the association of the data storage device (3) and payment means (2). The payment means (2) is operative to read the issued credit data from the associated data storage device (3) and, if the association is verified, to determine from the issued credit data and said received credit data the amount of any newly issued credit, and to update said received credit data in accordance with the newly issued credit so determined.

L'invention concerne un système de transfert de crédit qui permet de transférer un crédit représentant la consommation décomptée, calculée par le compteur, d'un service (G) fourni à un consommateur, à un dispositif compteur (1, 2), que l'on peut faire fonctionner sélectivement de façon à interrompre la fourniture dudit service. Le système comprend un dispositif de paiement (2), qui commande la fourniture du service (G) par le dispositif compteur en fonction du crédit reçu. Le dispositif de paiement (2) comporte une mémoire, qui stocke les données de crédit reçu indiquant le total de tous les crédits reçus par ledit dispositif. Le système comprend également un dispositif de stockage de données (3) portable, associé au dispositif de paiement (2), qui met en mémoire les données de crédit émis indiquant le total de tous les crédits émis pour le dispositif de paiement (2). Il comprend aussi un dispositif qui vérifie l'association du dispositif de stockage de données (3) et du dispositif de paiement (2). Ce dernier lit les données de crédit émis du dispositif de stockage de données (3) associé puis, si l'association est exacte, il détermine, à partir desdites données de crédit émis et desdites données de crédit reçu, le crédit récemment émis, et il met à jour lesdites données de crédit reçu en fonction du crédit récemment émis ainsi déterminé.

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