Disk rotation monitoring mechanism with parallel sensor unit
US6594225B1 · kind B1 · utility
0Cited by
9References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2000 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Mar 1, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2562
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording disk is disposed on a turntable. A damper fasten the information recording disk onto the turntable and coaxially rotated together with the turntable. A sensor unit includes a photo emitter and a photo detector opposed to each other such that respective optical axes are aligned on a straight line. An interception member is formed with the damper and periodically intercepts light emitted from the photo emitter so that the sensor unit detects the damper rotates together with the information recording disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.