Data recording medium, data recording apparatus, data reproducing apparatus and method
US6317397A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1998 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Nov 17, 2018 |
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 comprises 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 the each modulated code. The postamble area stores information to demodulate the final demodulated code in the data recording area. Data pattern stored in the postamble area includes synchronization pattern, is determined based on DSV of the data pattern, or satisfies the run length limitation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.