Optical disk recording/playback device with means to recognize, read from and record to multiple types of optical disk types
US5914929A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1997 |
| Grant date | Jun 22, 1999 |
| Priority date | — |
| Expiry date | Aug 11, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/057
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is provided with a cartridge holder for installation of a cartridge which houses an optical disk, and a tray which is located below said cartridge holder and in which an unhoused optical disk is placed, and which can move to-and-fro between a position in which information are recorded and/or played back and a position in which the optical disk is exchanged, a center shaft which rotates by means of a rotating drive means, and a holding mechanism including a turntable which is secured to the shaft and is provided with a magnetic body, an optical disk centering means and a support surface which supports the optical disk; and a clamper which can be brought into contact with and separated from the support surface of said turntable and which maintains in contact with the support surface of the turntable optical disks which do not have hubs. The optical information recording/playback device allows installation of a variety of optical information recording media such as optical disk with or without hubs and optical disks which are housed in a cartridge or unhoused.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.