Data recording medium with a region for recording data, the region having a data recording area and a postamble area
US6545963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Jun 29, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2562
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data recording medium suitable for an optical disk such as DVD is disclosed. The data recording medium has a plurality of sectors. The sector has a header area to store address information of the sector, a gap area for power calibration of a laser beam used for data recording, a data recording area to store a plurality of modulated codes obtained by modulating the data, a postamble area located immediately after the data recording area, and a buffer area to separate sectors. The modulated code includes information to demodulate a modulated code located immediately before each modulated code. The postamble area stores information to demodulate the final demodulated code in the data recording area. A data pattern stored in the postamble area includes synchronization pattern, and is determined based on a DSV of the data pattern, or satisfying the run length limitation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.