Disk drive employing read error tolerant sync mark detection
US6411452B1 · kind B1 · utility
216Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1997 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Mar 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hard disk drive has a pattern detector for providing fault-tolerant detection of a data sync mark represented by a substring of a concatenated string of error-prone read symbols and for providing a reduced risk that a nonmark substring of the concatenated string of error-prone read symbols will be misdetected as a sync mark. The data sync mark write string corresponds to an ordered set of m expected symbols selected to have maximum distance from all non-mark substrings of m consecutive expected symbols that exist in the concatenated string of expected symbols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.