Disc Cartridge with dual identification elements
US5091901A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Mar 19, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/38
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc cartridge having a cartridge body accommodating therein a record medium so that the record medium can be recorded and/or reproduced in the accommodated state, a first identifying device movably provided in the cartridge body so as to be switched from the outside so that it can close partly or wholly a rectangular window aperture formed through the cartridge body, and a second identifying device provided in the cartridge body in a half-secured condition so as to close a part of another rectangular window aperture formed through the cartridge body and which cannot be switched from the outside, wherein the first and second identifing devices indicate the kind of optical disc and data necessary for recording on and/or reproducing from the optical disc incorporated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.