Information recording device and method, information reproducing device and method, recording medium, program, and disc recording medium
US7975206B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 18, 2007 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | May 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2562
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An ECC block is constituted by RS(248,216,33). Of a data length of 216 bytes (symbols), only 16 bytes are allocated to BCA data and the remaining 200 bytes are used for fixed data having a predetermined value. Using the fixed data of 200 bytes and the BCA data of 16 bytes, parities of 32 bytes (symbols) are calculated. Only the BCA data of 16 bytes and the parities of the former 16 bytes of the 32-byte parities, that is, a total of 32 bytes only, are recorded in a burst cutting area of an optical disc. In decoding, error correction processing is carried out by using the fixed data of 200 bytes. The unrecorded parities of 16 bytes are processed as having been erased. Thus, the error correction capability in a burst cutting area of an optical disc can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.