Optical recording and reading method, optical recording and reading apparatus, optical recording medium, and method for producing an optical recording medium
US8630156B2 · kind B2 · utility
1Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2012 |
| Grant date | Jan 14, 2014 |
| Priority date | — |
| Expiry date | Feb 3, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium includes a recording and reading layer that is previously staked or formed afterward and has no concavo-convex pattern for tracking control, and a servo layer in which a concavo-convex pattern or a groove for tracking control is formed. Information can be recorded in the recording and reading layer while tracking is performed using the servo layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.