Smart IC card system and smart IC card with transaction management program stored therein
US5942738A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1997 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Nov 25, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/084
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Smart IC cards are ones which themselves control performance of their transactions, in order to avoid an IC card reader having to be specialized in particular transaction types. A smart IC card system includes at least one IC card reader (1) and an IC card (4) which stores a transaction management program in a memory thereof. The reader (1) controls exchange cycles by alternately and repetitively sending to the IC card (4), on the one hand a request for provision of a packet of instructions and data, this being referred to as the "card message" and, on the other hand, a report declaration associated with a report message regarding the execution by the reader (1) of instructions previously received in card messages. The IC card (4) controls processing cycles synchronous with exchange cycles by virtue of a device for executing a transaction management program, developing instructions and data of the card messages at a rate of card-message provision requests and report declarations sent by the reader (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.