Magnetic disk apparatus and information reproducing method
US8077425B2 · kind B2 · utility
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1References
13Claims
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Key dates
| Filing date | Aug 17, 2009 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Jan 2, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic disk apparatus includes a magnetic disk that includes a plurality of zones in which a plurality of tracks are arranged for each of circumferences of a spiral, and gaps that are arranged between the zones to have a width a predetermined number of times larger than a track width and that are regions without providing recording bits; and a reproducing element that simultaneously makes an access to the recording bits contained in the tracks, reading information stored in the recording bits, wherein the number of the tracks is one or larger and a sum of one and the predetermined number or smaller in one of the zones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.