Error correction for disk storage media
US7565598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2007 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Aug 8, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2537
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the invention provide methods and systems for improving the reliability of data stored on disk media. Logical redundancy is introduced into the data, and the data within a logical storage unit is divided into sectors that are spatially separated by interleaving them with sectors of other logical storage units. The logical redundancy and spatial separation reduce or minimize the effects of localized damage to the storage disk, such as the damage caused by a scratch or fingerprint. Thus, the data is stored on the disk in a layout that improves the likelihood that the data can be recovered despite the presence of an error that prevents one sector from being read correctly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.