Verifying the integrity of a media key block by storing validation data in a validation area of media
US6912634B2 · kind B2 · utility
24Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2001 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | May 27, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1259
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for verifying the integrity of a media key block (MKB) by storing validation data in a validation area of a medium, such as a DVD-R or a DVD-RW. In one embodiment, validation data comprises a hash function on a media key block. In another embodiment, validation data comprises the Verification Data field of an MKB's Verify Media Key Record.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.