| 摘要 |
Method of detecting a watermark embedded in a signal (S), in which a plurality of frames of the signal (S) is combined to a detection set (Dj) for one detection event. According to the invention, the reliability of watermark detection is enhanced by using non-consecutive frames to form the detection set (Dj). The invention also relates to an apparatus ( 2 ) for recording and/or playback of a signal, and to a system for broadcast monitoring, comprising such a watermark detector ( 24 ).
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