Storage medium, reproducing method, and recording method
US8137894B2 · kind B2 · utility
1Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2006 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Aug 11, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to an embodiment, a storage medium includes a transparent resin substrate having a concentric or spiral groove and a recording film formed on the groove on the transparent resin substrate, a recording mark being formed by irradiation of a laser beam, wherein a reproduction durability count in a case where reproduction is continuously carried out by a laser beam is 1,000,000 or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.