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Digital set-top box core



Digital set-top box core

Digital video technology, MPEGII decoding module can be called the core module outside the CPU, MPEG II digital transmission using interleaved coding, the first need to de-interleave the stream, video, audio and data stream separation, and video code Decoding job. After the above steps MPEGII stream into a video (CCIR656 format) and audio digital signal. The MPEG multiplexer multiplexes program streams and data streams of various channels and sends them to a radio frequency modulator and an electronic program guide (EPG) in MPEG2 data format of 188 bytes.