Selectable data readout IC card
US4797543A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1986 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Jul 30, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/084
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An IC card has at least a CPU and a memory unit having a plurality of storage areas allocated therein and can write or read information. The IC card includes an indication unit which indicates if the information written in the storage area is the information to be subjected to an updated information readout for reading only the latest information or the information to be subjected to a history information readout for reading the information written in the storage area, sequentially in a predetermined order. In accordance with an indication by the indication unit, a selective readout of the information in the storage area is possible between the updated information readout and the history information readout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.