Error correction device of optical disk unit
US7613983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2006 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | May 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2562
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An error correction device for an optical disk reproduction unit for reproducing recorded information from an optical disk recorded with a code row data added with an error code in the same direction as a sequence of recorded information in the recording portion of the optical disk, and recorded guide information recorded in an inerasable state as a guide for recording the code row data before the code row data is recorded, wherein a prepit decoder as a first position detection portion is configured to detect a physical configurational singular point in the recorded guide information as a first position, a second position generating portion is configured to generate a second position replacing the first position detected by the prepit decoder with the code row data position, and an error correction circuit is configured to erase-correct error in the code row data using the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.