Writeable medium access control using a medium writeable area
US6631359B1 · kind B1 · utility
30Cited by
89References
66Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/211
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical medium uses a single structure or format (such as identical materials, layers and the like) for both a region for holding information content-mastered data and a writeable area. In one aspect, a writeable region of a medium with information content-mastered data is used in connection with paying, collecting or accounting for usage or royalties for proprietary intellectual property embodied in or associated with the content. In one embodiment, a key permitting access to some or all content, preferably when combined with a disk serial number, is stored in the writeable area, which is preferably user-inaccessible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.