Magnetic recording media and method for manufacturing the same
US6852431B2 · kind B2 · utility
15Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2002 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Jan 5, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium includes data signal storage regions each having first magnetic substance cells, and tracking servo signal storage regions each having second magnetic substance cells. The first magnetic substance cells are separated from one another by nonmagnetic substance and the second magnetic substance cells are separated from one another by nonmagnetic substance, and the first magnetic substance cells and the second magnetic substance cells have different magnetic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.