// Digital Watermark Extraction Apparatus for Copyright Protection of Digital Audio/Video/Multimedia

摘要

PURPOSE: A digital water mark extractor of a digital audio/video/multimedia is provided to accurately extract CONSTITUTION: A digital water mark extractor of a digital multimedia includes a demultiplexer(100) for receiving a digital multimedia signal having a water mark and dividing the signal into an audio bit stream and a video bit stream, an audio water mark extracting part(300) for extracting a water mark including audio