VERFAHREN UND VORRICHTUNG ZUM EINBETTEN UND EXTRAHIEREN VON WASSERZEICHENINFORMATIONEN

WO2003088146 A UPAB: 20031128 NOVELTY - Device for embedding watermark information (16) in an information signal (21) that contains audio and or video data comprises: a device (10, 12, 14) for provision of a synchronization sequence; a combination device (18) for generation of a combination sequence with a multiplicity of combination sequence units from the synchronization sequence and the phase shifted data sequence; and a device (20) for combined transmission of a combination sequence and the data signal, in order to embed the watermark information in the information signal. DETAILED DESCRIPTION - The invention also relates to a corresponding method for embedding watermark information as well as a device and method for extraction of watermark information from the signal. USE - Watermarking of audio and video data signals. ADVANTAGE - The invention provides a high data transfer rate.