Method and apparatus for identifying vibration level of previously tested CD ROM discs
US5893048A · kind A · utility
18Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Jan 13, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The vibration level of a CD-ROM disc is determined in a computer system by installing the disc onto the disc drive. The disc is spun on the disc drive up to an identification speed. The table of contents on the disc is read to determine by disc serial number that the disc is a data disc. Also, the serial number is compared with a file stored in memory to determine that the data disc has been previously tested. The system memory also provides testing information indicating a speed for operating the identified disc without noticeable vibration. The disc drive then operates the identified disc at the indicated speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.