Disc cartridge and recording/reproducing apparatus discriminating means
US5163037A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1991 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Jun 14, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/0311
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc cartridge made up of a cartridge housing and a disc-shaped recording medium, such as an optical disc or a magneto-optical disc, accommodated in the cartridge housing, is disclosed. The cartridge housing of the disc cartridge is provided with a recording/reproducing aperture for exposing a part of the disc-shaped recording medium to the outside along the radius of the disc, and with a shutter member for opening or closing the aperture. Within a shutter opening actuating recess formed in the cartridge housing, a discriminating member associated with the type of the disc-shaped recording medium accommodated in the cartridge housing is provided for closing at least a part of the recess to prevent insertion of the disc cartridge into a recording and/or reproducing apparatus which is not suited to the type of the disc-shaped recording medium of the disc cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.