Time domain watermarking of multimedia signals
US7546467B2 · kind B2 · utility
5Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2003 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Oct 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/00086
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of generating a watermark signal, embedding the watermark signal within a multimedia signal, and subsequently detecting the watermark signal is described. The watermark signal is the sum of two sequences of values, the second sequence of values being a circularly shifted version of the first sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.