Integrating digital watermarks in multimedia content
US6611607B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2000 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Mar 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3284
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for decoding auxiliary data from media signals in multimedia content decodes watermarks from different media signals and uses the watermarks to control processing of the multimedia content. A copy control method decodes a watermark from one of the media signals in multimedia content, and uses the watermark to control processing of the multimedia content. Another method uses a watermark decoded from a first media signal to decode a second media signal. Yet another method uses a watermark decoded from a media signal to decode metadata associated with the media signal. Finally, another method forms a key for decoding data from at least first and second watermarks extracted from first and second media signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.