High density optical disk and a method for manufacturing same
US6407979B1 · kind B1 · utility
8Cited by
9References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1999 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Mar 9, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10584
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A high density disk and a method of manufacturing the same is disclosed. High density is achieved by narrowing groove pitch and increasing groove depth in a manner which does not sacrifice any desirable features of the high density optical disk medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.