Systems and methods for conditional access and digital rights management
US8474054B2 · kind B2 · utility
6Cited by
2References
75Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2007 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Jan 18, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8355
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Conditional access (CA) and digital rights management (DRM) in digital media delivery, processing, and storage systems. Methods and apparatuses are provided for managing digital rights under the protection of multiple CA and/or DRM systems. Some embodiments provide secure and robust methods for bridging multiple DRM systems in the digital media content distribution and playback systems. The present invention simplifies content repurposing, after it has been bridged to a secondary DRM system, but still under the control of the original DRM system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.