Digital watermark data embedding method, and digital watermark data embeddability analyzing method
US7047412B2 · kind B2 · utility
10Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2001 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Aug 31, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3274
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To lighten the processing load of embedding a digital watermark in content data, a preliminary process (embedding strength map generating process) run by a preprocessing section and the main process (digital watermark embedding process) run by a man processing section are run mutually independently. Specifically, the preliminary process of the preprocessing section is run each time new content data is stored to the content data database, and the main process of the main processing section is run when a content delivery request is received from a receiving terminal (client).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.