We present a newly developed compact HDTV/PAL down converter in this article. This converter realises high quality transfer from HDTV to PAL/SECAM using advanced motion adaptive algorithms for scanning-rate convesion and field-rate conversion. To remove impairments in the converted picture such as blur, judder and flicker, We improve the accuracy of motion detection using new and unique algorithms.
This paper describes the subjective estimation of tone quality of digital audio data compression equipment which is used for broabcasting. We inspected tone quality change when linked to NTT's PCM transmitting circuit. As a resault, we can not recoginized difference of tone quality.