Apparatus and method for watermark embedding and detection using linear prediction analysis
US7114072B2 · kind B2 · utility
2Cited by
18References
7Claims
0Family size
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Key dates
| Filing date | Apr 13, 2001 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Mar 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/00891
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In the apparatus and method for a watermark embedding and detection through a linear prediction analysis, and a record medium capable of being read through a computer having a writing of a program to realize the inventive method, in which a quality of a signal does not drop, even after an imbedding of a watermark by using a signal based on a changed shape of an original signal through a use of a linear prediction analysis, with a watermark signal to be imbedded in a digital signal, but also the watermark signal containing copyright information can be detected even though an optional attack is applied thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.