Device that is used for secure diffusion controlled display private copying and management of and conditional access to MPEG-4-type audiovisual content rights
US7428755B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 2003 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Jan 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/845
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for distributing video sequences according to a nominal flow format that describes a multiplicity of audiovisual scenes, each scene including a multiplicity of hierarchized audiovisual objects and a descriptor of the hierarchy and of spatial and temporal relationships among the objects, each video object including at least one complete I-VOP digital plane, including generating a first modified flow having the format of a nominal flow and a second flow of any format including digital information required for reconstruction of modified planes by analyzing the flow of video sequences, separately transmitting the two flows generated from a server to destination equipment, and calculating on the destination equipment a synthesis of a flow of the nominal format as a function of the first and second flows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.