Disk device and method of manufacturing disk device
US10360930B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 29, 2018 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Aug 29, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, in a disk device, the head includes a first read element and a second read element. The disk medium is partitioned into a plurality of zones. The plurality of zones include a first zone and a second zone. The first zone includes a plurality of tracks on each of which a servo area and a data area are placed, a servo burst region in the servo area from which to detect the amount of off-track of the head from the center of a track, having a first bit length. The second zone includes a plurality of tracks on each of which a servo area and a data area are placed, a servo burst region in the servo area from which to detect the amount of off-track of the head from the center of a track, having a second bit length shorter than the first bit length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.