Digital rights management system
US7594275B2 · kind B2 · utility
35Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2003 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Jun 13, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/1083
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A public licensing infrastructure (PLI) for a digital rights management (DRM) system is described. In an implementation, a method includes generating a formal license for content. The formal license includes a decryption key for decrypting the content and access rules for accessing the content. A plurality of license authorities is configured to provide a plurality of partial licenses. The plurality of partial licenses is combinable to form the formal license. Each license authority provides a respective partial license.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.