Apparatus and method to preserve data integrity during a power loss
US7219259B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Nov 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1441
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is disclosed to preserve data integrity during loss of power to an information storage and retrieval system. Applicants' method converts a plurality of sectors having a first sector format to a plurality of sectors having a second sector format. If a power failure warning is received during the sector format conversion process, the method prefetches the next second sector, overlays the next first sector onto part of all of that prefetched second sector, and saves the newly-written second sector before loss of utility power. After restoration of utility power to the information storage and retrieval system, Applicants' method writes that newly-written second sector to an information storage medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.