Secured device for the processing of high-quality audiovisual works
US7327936B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 2003 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Oct 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for distributing video sequences according to a nominal flow format including a succession of frames, each including at least one I block corresponding to a complete digital I image, each I image being broken down into blocks and macroblocks dependent on each other by correlation coefficients, including: analyzing a flow of sequences; generating a first modified flow having a format of a nominal flow and having I images modified by substitution of selected correlation coefficients by coefficients of the same type, but being random, and a second flow of any format including the substituted correlation coefficients and digital information which can enable reconstruction of the modified images; transmitting the first and second modified flows 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.