Disc player
US6404718B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1999 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Sep 9, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B31/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc player is provided with: a turn table (13) for rotating an information record disc, which is placed on the turn table; a clamper (15) for holding the information record disc between the clamper and the turn table; a chassis (10) on which at least one of the clamper and the turn table is mounted and which has a rotation shaft (11a, 11b) parallel to a main surface of the information record disc held between the clamper and the turn table; a driving device (8a, 12) for transmitting a driving force to the chassis so as to rotate the chassis with the rotation shaft at a rotation axis; and an optical pickup (20) for at least reading a signal from the information record disc held between the clamper and the turn table while the disc is rotated on the turn table. A gap (W) is prepared between the rotation shaft and a bearing (22b) for the rotation shaft in a direction parallel to the main surface such that the rotation shaft has a play in the direction parallel to the main surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.