Content protection continuity through authorized chains of components
US8332536B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2009 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Feb 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/84
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a method for the distribution and control of digital content such that Quality of Experience (QoE) is maintained. Content is protected from when the content is encrypted to when it is used. To ensure the QoE of particular content, a content owner embeds a list of required or preferred components that must be employed to render the content. The content owner's list of required or preferred components specifies specific components “trusted” to correctly process the content. The specified chain of preferred components is compared to possible devices in the system that processes the content. If there are multiple acceptable devices for a specific link, a preference system is employed to determine the device that executed the particular part of the chain. The preference system is based upon a number of factors, such as, but not limited to, performance characteristics, user preferences, expected stability, power requirements and system preferences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.