High recording density optical disc
US6400677B2 · kind B2 · utility
5Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1998 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0938
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disc comprising a recording layer upon which a groove and land are formed for recording a data signal upon both the groove and the land, and further wherein both of the groove and the land have substantially identical recording characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.