Scalable repair block error correction for sequential multiple data blocks in a magnetic data storage device
US8856618B2 · kind B2 · utility
12Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2012 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Nov 28, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1833
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A technique for recovering of “squeezed” sectors in a set of sequential sectors such as are used in Shingled Magnetic Recording (SMR) is described. Embodiments of the invention use a programmable erased sector recovery scheme, which is a concatenation of a “Cauchy-type” track erasure correction code, together with a media-error correction code that generates N-weighted parity-sectors per track and is capable of replacing up to N-erased sectors per track in any possible combination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.