Method and electric circuit arrangement for detecting watermark in information signal

Disclosed is a method for the detection of pseudo-symmetric watermarks in an information signal. The method includes receiving the information signal, wherein the watermark is embedded in respective sections of the information signal by tiling a finite number of a plurality of watermark patterns, ac...

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Bibliographische Detailangaben
1. Verfasser:	A.A.C.M. KALKER
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING CALCULATING CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY COMPUTING COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMAGE DATA PROCESSING OR GENERATION, IN GENERAL INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SEALS
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Beschreibung
Zusammenfassung:	Disclosed is a method for the detection of pseudo-symmetric watermarks in an information signal. The method includes receiving the information signal, wherein the watermark is embedded in respective sections of the information signal by tiling a finite number of a plurality of watermark patterns, accumulating the sections, and correlating the accumulated sections with a sum of the plurality of watermark patterns. In particular, the information signal is folded as if there was only a single basic pattern. The presence of the watermark is then detected by a cyclic sliding correlating.