Optical disk and optical disk recording and reproducing apparatus
US5517484A · kind A · utility
47Cited by
10References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 8, 1994 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Feb 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1833
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A reproduction type optical disk having same sector structure as that of a recordable optical disk, can reproduce data even if a plurality of sectors are disabled from correction. The disk has data sectors for recording data, parity sectors obtained by a new error correction coding between a plurality of data sectors, wherein the error correction coding between the data sectors is performed by arranging a plurality of data sectors into a matrix and by coding them in directions of row and column doubly to make a product code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.