Simplified method and related device for authentication of DVD system
US7162143B2 · kind B2 · utility
0Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 2002 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Jun 9, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/85
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and related device are used for a DVD (Digital Versatile Disk) system to authenticate the DVD system by generating an authentication code corresponding to an inquiring code. The inquiring code has a first portion and a second portion both having at least one bit. The method comprises: generating a first sub-authentication code according to only the first portion of the inquiring code, generating a second sub-authentication code according to only the second portion of the inquiring code, and combining the first sub-authentication code and the second sub-authentication code to form the authentication code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.