System for updating data stored on a flash-erasable, programmable, read-only memory (FEPROM) based upon predetermined bit value of indicating pointers
US5392427A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1993 |
| Grant date | Feb 21, 1995 |
| Priority date | — |
| Expiry date | May 18, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99956
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for updating data stored on a computer storage device are provided. The data is contained in records or entries. Each record or entry has a primary pointer and an indicator. The indicator initially has each bit set to a predefined bit value. When data is to be updated (and thus, the record or entry containing the data is to be superseded), at least one bit of the indicator is changed from the predefined bit value to another bit value to point to the new record or entry and to indicate that the data in the new record or entry is an update of the data in the superseded record or entry. This method and system are especially suitable to be used in a write-once computer storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.