Apparatus for keeping several versions of a file
US6510552B1 · kind B1 · utility
54Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2000 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Jan 28, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99954
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for keeping several versions of a file includes a memory and an overwriting unit coupled to the memory. An initial version of the file is stored in a first area of the memory, and a current version is stored in a second area of the memory, the current version resulting from a modification of the initial version. The overwriting unit substitutes the current version for the initial version in response to a validation signal. The validation signal is produced after the current version has been permanently stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.