Method for exchanging data between an automatic dispenser and a microcircuit card

US6745935B1 · kind B1 · utility

Assignee

• Regie Autonome des Transports Parisiens (RATP)—EPIC · FR

Inventors

• Francois Grieu · Paris, FR
• Gregory Mardinian · Montmorency, FR

Key dates

• Filing date: Apr 6, 2001
• Grant date: Jun 8, 2004
• Expiry date: Apr 6, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G07F7/082
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

The card contains value information suitable for being debited by the machine in consideration for delivering goods or service. The machine causes a ratification flag stored in the non-volatile memory of the card to be modified between two states, namely: a ratified state corresponding to the case where the preceding transaction performed with the card, whether with the same machine or with another machine, took place correctly, and a non-ratified state for the case when said preceding transaction was interrupted in the course of being executed. The machine successively: conditionally debits the card if the flag is in the ratified state; causes the card to put the flag in the non-ratified state if a debit took place in the preceding step; then causes the goods or service to be delivered; and if delivery takes place effectively in the preceding step, causes the flag to be put by the card into the ratified state.