Optical disc, information recording method, and information reproducing method
US8179763B2 · kind B2 · utility
0Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2007 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Aug 18, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, a re-recordable write-once optical disc by which recording/reproducing can be properly done with a short-wavelength blue laser is provided. The disc has recording layers on which marks are recorded by the laser power of a modulated short wavelength, with a space formed between the recorded marks. The recording layer of the disc uses an organic dye material by which no physical modification or no physical change substantially occurs in an area of the recorded marks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.