Magnetic disc apparatus
US10056100B1 · kind B1 · utility
1Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 2017 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Jul 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1258
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, a magnetic disc has N (N is an integer of 2 or more) zones divided in a radial direction, and servo patterns different in servo pattern frequency are recorded in the individual zones. The relationship that the zone width of a K-th (K is an integer of 1 or more and N−1 or less) zone from the outer radial side of the magnetic disc is larger than the zone width of the K+1-th zone adjacent to the K-th zone on the inner diameter side applies to all the K-th zones in which K is 1 or more and N−1 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.