In a system for creating, reading and writing on rotatable information storage media an apparatus for determining drive mechanism aging characteristics
US5872723A · kind A · utility
22Cited by
30References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1998 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Feb 13, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Advantage is taken of a laser beam and reference track system for recording information on a CD-ROM or similar device. Precise determination of radial and angular position provide accurate indications of drive motor speed and performance, both instantly and over any select period of time so as to give an early indication of motor or bearing wear or failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.