MPEG2 moving picture encoding/decoding system

摘要

An MPEG2 moving picture and encoding/decoding system to provide digital copy protection of digital moving picture data. The MPEG2 moving picture encoder discrete cosine transforms a video input signal and uses a digital watermark inserter to embed digital watermark information on a frequency domain of the discrete cosine transformed video input signal. The MPEG2 moving picture decoder receives the encoded video output signal from the MPEG2 moving picture encoder and removes the embedded visual watermark information to locally decode the encoded video signal.