Disk drive with variable track density
US7342741B1 · kind B1 · utility
7Cited by
160References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2000 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Feb 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1258
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a disk drive is disclosed in which servo information is written in tracks on a disk surface, the track width performance of the associated read/write transducer is measured, the track width performance is analyzed and a data track pitch is established. Based on the established track pitch, a track location formula for data tracks on the disk surface is defined. For a disk drive having a plurality of read/write transducers, a track location formula is established for each transducer. A method for measuring track width performance of a read/write head is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.