Embedding supplementary data in an information signal
US7639599B2 · kind B2 · utility
11Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2002 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jul 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/00086
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method of adjusting a supplementary data signal (wm(n)) to be embedded in an information signal (x(n)), for example an audio signal. The method comprises the steps of determining (301) a position where a predetermined property of the information signal exceeds a predetermined threshold, e.g. an attack position, and suppressing (302) the supplementary data signal in a predetermined neighbourhood of the determined position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.