Data storage device generating extended redundancy to compensate for track squeeze
US9881643B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 2017 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | May 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of tracks. A first codeword is generated comprising first redundancy, and first position information of the head relative to a first track is saved while writing the first codeword to the first track. A second codeword is generated comprising second redundancy, and second position information of the head relative to a second track is saved while writing the second codeword to the second track. Extended redundancy is generated for the first codeword based on the first and second position information, and the first codeword is recovered from the first track based on the extended redundancy generated for the first codeword.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.