作者: Takashima Osamu , Oguma Toru , Takayama Susumu
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摘要: PURPOSE:To improve the transmission quality of an image while holding occupied band width a channel and to attain multiplex that assimilates current system by surely executing for required material interchangeability with system. CONSTITUTION:The is provided timing detection means 11 separating synchronous signal from inputted composite video obtaining horizontal scanning line whose period applied synchronizing signal, compression-encoding 13 supplied external converting compression-encoded into bit string less than rate be product number bits superposed obtained within allowable range field frequency multiplexing 15 superposing waveform capable securing at 11.