Magnetic disk medium, reticle and magnetic recording and reproducing apparatus
US7738213B2 · kind B2 · utility
3Cited by
37References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2006 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Nov 22, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/855
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic disc medium according to an aspect of the present invention includes: a preamble part in a servo area of each of sectors obtained by dividing a surface of the medium in a circumference direction, the preamble part including strip-shaped patterns formed of a plurality of magnetic materials, and each of the strip-shaped patterns formed of the magnetic materials being divided by non-magnetic materials at periodic intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.