Watermarking and transferring material
US7443982B2 · kind B2 · utility
9Cited by
9References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2001 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Jan 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for watermarking and transferring watermarked material comprises a transaction server, first and second clients, first apparatus for applying a perceptible watermark to the material and second apparatus for removing the watermark. The server, clients and first and second apparatus are linked by one or more communications networks. The system is arranged to implement the steps of:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.