Optical disk reading device using both a decipher key and disk identification information
US6343282B1 · kind B1 · utility
21Cited by
26References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1999 |
| Grant date | Jan 29, 2002 |
| Priority date | — |
| Expiry date | Nov 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2562
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for reading encrypted information recorded on an optical disk having first and second recording areas, the device can read disk identification information recorded in the second recording area, select a specific decipher key among multiple decipher keys, and decrypt encrypted information from the optical disk using both the disk identification information unique to that optical disk and the specific decipher key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.