Magnetic recording medium having tracking control area formed adjacent data tracks
US6757126B1 · kind B1 · utility
7Cited by
13References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1999 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Apr 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5526
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium having a magnetic layer includes a plurality of tracks formed on the magnetic layer. The tracks have information magnetically recorded thereon. A magnetization change area for tracking control is formed on the magnetic layer adjacent to and along a length of each of the tracks. The magnetization change area has magnetic flux which changes along the length of the tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.