Shingled magnetic recording disk drive with multiple data zones containing different numbers of error-correction-code sectors
US8699162B1 · kind B1 · utility
51Cited by
11References
18Claims
0Family size
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Key dates
| Filing date | Nov 18, 2012 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Nov 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5565
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A shingled magnetic recording disk drive with sector error correction code (ECC) has the disk recording surface divided into multiple zones. Each zone is assigned a sector-ECC strength, i.e., a unique number of ECC sectors associated with a block of data sectors. The zone in which data is to be written is determined from the time average of the position-error signal (PES), which is an indication of the track misregistration (TMR) and thus the current environmental condition to which the HDD is subjected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.