Method for marking a compressed digital video signal
US6785332B1 · kind B1 · utility
8Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2000 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Jan 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/51
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for marking a compressed digital video signal by embedding a digital signature in the compressed video signal, the signal representing a series of at least two video images, each image being divided into a plurality of regions, the signal including movement vectors representing the movement of the regions between the first and the second image, characterised in that it consists in modifying at least one of the coefficients X or Y of at least one of the movement vectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.