Security central processing unit management of a transcoder pipeline
US9152577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Aug 21, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for managing a transcoder pipeline includes partitioning a memory with a numbered region; receiving an incoming media stream to be transcoded; and atomically loading, using a security central processing unit (SCPU), a decryption key, a counterpart encryption key and an associated region number of the memory into a slot of a key table, the key table providing selection of decryption and encryption keys during transcoding. The atomically loading the decryption and encryption keys and the associated numbered region ensures that the encryption key is selected to encrypt a transcoded version of the media stream when the media stream has been decrypted with the decryption key and the transcoded media stream is retrieved from the associated numbered region of the memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.