Optical information recording medium, optical information recording/reproducing system, and optical information recording/reproducing apparatus
US7881178B2 · kind B2 · utility
2Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Nov 19, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0013
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disclosed optical information recording medium includes a guide track layer having grooves and ridges; and recording layers composed of an optical recording material and disposed above and below the guide track layer. The guide track layer is used to determine track positions on the recording layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.