Development of HDTV CODEC for transmission System through Satellite Channel

Abstract

We have developed HDTV CODEC (encoder and decoder) applyed to the digital transmission system through the satellite channel of 36MHz bandwidth Ku band transponder. In the encoder, input data, 1 channel of video and 4 channels of audio, are compressed efficiently and are multiplexed. Then, Reed- Solomon coding is performed to the multiplexed data. Video compressing scheme is based on frame / field adaptive motion compensated prediction and DCT algorithm. In the decoder, reconstracted images have excellent quality in spite of its 1/30 compression ratio.