Multi-stage watermarking process and system
US7609848B2 · kind B2 · utility
7Cited by
212References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2005 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3236
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-stage watermarking system and process that creates a watermark specification which describes how to generate a watermark, generates a template specification which describes how to merge the watermark into a target document, generates the watermark based on the watermark specification, and merges the watermark into the target document based on the template specification to provide a watermarked document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.