Optical disc and disc cartridge
US5970045A · kind A · utility
8Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Mar 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10584
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disc and a disc cartridge for accommodating the optical disc, wherein the disc cartridge accommodates a disc non-symmetrical in cross-section relative to the center of thickness of the disc, in which disc cartridge includes a main cartridge body portion and an opening/closure mechanism. The main cartridge body portion has an aperture via which to insert or take out the disc. The main cartridge body portion is configured for accommodating the disc only in the regular state of the disc which permits recording and/or reproduction of the disc. The opening/closure mechanism opens or closes the aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.