Method and apparatus for allowing software access to navigational data in a decrypted media stream while protecting stream payloads
US8363831B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2009 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Jul 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus and system enabling software access to navigational data in a decrypted media stream while protecting stream payloads. In one embodiment, a filter may route an encrypted content stream and associated information to a secure partition having a trusted computing component for decryption. Upon decryption, the trusted computing component may store the decrypted payload of the content in a secure storage location accessible to the trusted computing component. Thereafter, the decrypted navigational header information of the content may be used to navigate to the decrypted content via a trusted component such as a trusted rendering unit in the secure partition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.