Embedder for embedding a watermark into an information representation, detector for detecting a watermark in an information representation, method and computer program

US9037453B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Bernhard Grill · Lautenbächle, DE
• Ernst Eberlein · Erlangen, DE
• Stefan Kraegeloh · Erlangen, DE
• Joerg Pickel · Happurg, DE
• Juliane Borsum · Erlangen, DE

Key dates

• Filing date: Mar 3, 2009
• Grant date: May 19, 2015
• Expiry date: Jul 6, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N1/32352
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An embedder for embedding a watermark to be embedded into an input information representation comprises an embedding parameter determiner that is implemented to apply a derivation function once or several times to an initial value to obtain an embedding parameter for embedding the watermark into the input information representation. Further, the embedder comprises a watermark adder that is implemented to provide the input information representation with the watermark using the embedding parameter. The embedder is implemented to select how many times the derivation function is to be applied to the initial value.