Method and apparatus for implementing revocation in broadcast networks
US7225164B1 · kind B1 · utility
44Cited by
175References
42Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 15, 2000 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Feb 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/101
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of revoking a descrambling privilege for copy controlled content to a host device is provided. The method includes receiving copy controlled content at a conditional access module. A revocation list is also received at the module. The method includes determining whether the host device associated with the module is on the list. If so, the conditional access module will not descramble the content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.