Information recording system and method for using alternative record area in writing and reading of data on optical disk
US4638472A · kind A · utility
25Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1984 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Mar 9, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording method and system for writing information onto a recording medium. If an error area is detected in a check of the information read out of the medium after writing, the information is rewritten onto an alternative area on the recording medium using a buffer memory while the information in the error area is kept valid. Loss time accessing the alternative area is eliminated until the error checking and correction in the error checking and correction circuit is not available for the information read out of the error area through a reading circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.