DEVICE FOR watermark embedding in the information view, a detector for detecting a watermark in an information representation, METHOD AND COMPUTER PROGRAM AND INFORMATION SIGNAL

摘要

1. Apparatus (300; 700) for embedding a watermark (341; 742) to be embedded into the input information representation (310; 710) representing an audio signal or a video signal representing or constituting a computer program, or representing an image or it is a text, characterized in that it comprises: information adder (330; 740) operable to provide the input information representation (310; 710) with a watermark (341; 742) to be embedded, and additional information (343; 762) to be added to get the information representation (320 ; 720) provided with a watermark to be embedded and the additional information to be added! where the additional information to be added comprises descriptive information describing the introduction of at least one watermark in the information representation (320; 720) provided with a watermark to be embedded and the additional information! wherein the embedder is arranged to provide the input information representation (310; 710), additional information (343; 762) to be added, so that the additional information to be added, carries information about the number of watermarks contained in the information representation (320; 720) secured watermark to be embedded and the additional information to be added. ! 2. An apparatus for introducing (300; 700) a watermark (341; 742) to be embedded into the input information representation (310; 710) representing an audio signal or Representat