抄録
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.
