Multi-layered information recording medium with spare defect management areas
US7123556B2 · kind B2 · utility
81Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2003 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Feb 5, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2575
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-layered information recording medium comprising a plurality of recording layers, a user data area for recording user data, provided in at least two of the plurality of recording layers, and a defect list storing area for storing a defect list. When at least one defective area is detected in the user data area, the defect list is used to manage the at least one defective area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.