Optimizing reader to writer offset compensation for a disc drive
US6671790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Mar 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for optimizing logical track to physical track offset compensation of a data storage device includes steps of: associating each of a plurality of logical tracks to one of a plurality of physical tracks, selecting a set of sample tracks from the plurality of physical tracks, measuring an offset value for each logical track associated with one of the sample tracks, deriving, through an extrapolation technique, an offset compensation value for use with each of the sample tracks absent an association with one of the logical tracks, linking each measured offset compensation value and each estimated offset compensation value with its associated physical track, calculating, through an interpolation technique, an offset compensation value for use with each of the physical tracks absent an association with one of the sample tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.