Sync mark detection using branch metrics from data detector
US8810943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2012 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Dec 27, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10222
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are provided for detecting a sync mark in a storage system, such as a hard disk drive. A sync mark is detected in a storage system by obtaining one or more branch metrics from a data detector in the storage system; generating one or more sync mark metrics using the one or more branch metrics from the data detector; and identifying the sync mark based on the sync mark metrics. An input data set is optionally compared with a plurality of portions of a sync mark pattern to yield corresponding comparison values and the comparison values can be summed to obtain at least one result. A sync mark found signal is asserted based upon the at least one result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.