IC card which can set security level for every memory area
US4734568A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1986 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Jul 30, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/1083
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An IC card which can set a security level for every memory area. A plurality of memory areas for storing data in accordance with the kinds of data; a secret identification number area for storing a plurality of secret identification numbers; a security level memory area for storing the input condition of the input secret identification number consisting of at least one of the secret identification numbers so as to specify this input condition for each memory area; and means for allowing the relevant memory area to be accessed after confirming that the secret identification number or numbers according to a predetermined security level were input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.