Optical disk, optical reproduction device, and optical recording device
US6909677B1 · kind B1 · utility
2Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2000 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Apr 28, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2562
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disk has a recording track constituted by sectors arranged in a concentric or spiral form. Each sector is divided into segments, and each segment includes a data field where data is recorded and a clock mark field having a different light reflectance from that of the data field. The data field in the sector has synchronization patterns S. Hence, a highly reliable optical disk, optical reproduction device, and optical recording device can be offered that are capable of performing recording and reproduction even if a clock mark is defective due to a flaw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.