Bonded pre-recorded and pre-grooved optical disc
US7564771B2 · kind B2 · utility
14Cited by
32References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 14, 2005 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Jun 2, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium comprising a read-only type disc and a pre-grooved disc bonded back-to-back to the read-only type disc is provided. Content from the read-only type disc side of the optical recording medium can be reproduced through a standards-compliant optical media player. Content can be recorded by a standards-compliant optical media recorder on the pre-grooved disc side of the optical recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.