Optical disc medium having a system information recording area of low recording density
US7355957B2 · kind B2 · utility
2Cited by
4References
3Claims
0Family size
Assignees
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Key dates
| Filing date | Apr 12, 2004 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Feb 27, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to stably carry out reproduction of information in an optical disc medium (10) using a PRML (partial-response maximum-likelihood) method for reproducing the signal, the optical disc medium (10) has not only a data recording area (14) where data is recorded at high density but also a system information recording area (16) where information is recorded at low density and binary equalizing/reproducing can be easily made. Information required to circuit setting is recorded in the system information recording area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.