Sysyem and method providing selective write protection for individual blocks of memory in a non-volatile memory device
US5802583A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 30, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Oct 30, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1441
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for selective write protection for a non-volatile memory device which comprises a superset of the existing JEDEC 21-C standard and in which user definable portions of a non-volatile memory device can be write protected instead of only the entire device. The write-protection technique of the present invention can be selectably enabled or disabled dynamically as determined by a user. Moreover, the system and method of the present invention provides for storage of the device write-protection configuration in non-volatile memory in order that the device can be restored to its last known write-protection state in the event it is powered down or the current configuration is otherwise lost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.