IC card having fault checking function
US4760575A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1986 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Jun 3, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an IC card having a fault check function comprising a ROM having test areas of the number corresponding to memory address lines so that predetermined various data necessary for executing a fault check are recorded in advance into the test areas, means for successively reading out the data previously recorded in the test areas, means for detecting coincidence of the respective data successively read out by the reading-out means with corresponding ones of said predetermined data previously recorded n the test areas, and means for making judgement as to whether a fault exists or not on the basis of a result of detection by the coincidence detecting means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.