Optical disk having sub-blocks and sub-block indentification marks
US6674700B2 · kind B2 · utility
25Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Apr 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2541
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
On an optical disk medium according to the present invention, address information is recorded along a wobbling track groove 2. The track groove 2 is made up of a plurality of unit sections 22, 23. Each of these unit sections 22, 23 has side faces that are displaced periodically in a disk radial direction. This displacement oscillates at a single period in a tracking direction. However, the displacement pattern differs depending on “each bit of address information (subdivided information)” allocated to each of the unit sections 22, 23.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.