Secure device for the broadcasting, recording and viewing on demand of audiovisual works in a format of the MPEG-2 TS type
US7801305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2004 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Jul 28, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6137
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for distributing audiovisual sequences in accordance with a nominal stream format respecting a MPEG-2 TS norm including a succession of TS packets, including analyzing the stream made prior to transmitting to client equipment to generate a first stream in conformity with the MPEG-2 TS format, modifying all or part of the TS packets by substituting packets of the same structure, but whose content was modified, and generating a second stream of a format including digital information suitable for permitting reconstruction of the nominal stream, separately transmitting the two streams from a servers to the equipment, and a calculation is made on the equipment of a synthesis of a stream in nominal format as a function of the first stream and the second stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.