Track jump controller for correcting information read errors
US5590112A · kind A · utility
5Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1994 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Dec 6, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0941
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rotation control section rotates a compact disk about twice as fast as a reproduction speed. Data read out by a pickup section are stored into a cache memory and then sequentially read out by a reproduction address generation circuit at a predetermined reproduction speed. When the cache memory runs out of empty storage space, a control circuit returns the pickup section to an inner track. Further, when some error is present in the read-out data, the pickup section is returned to a track where the error has originated so as to reread the data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.