衛星放送受信における映像・音声の雑音軽減 : MSW S/Nエンハンサ及びディジタル音声制御ビット付け替え : 情報ディスプレイ,無線・光伝送,画像通信システム,画像応用

抄録

we report noise reduction of video and audio of Direct Satellite Broadcast reception, using an MSW S/N enhance and regeneration digital audio control bit. The MSW S/N enhancer which is constructed of two HSSW filters, can improve 2 to 6dB of video SN ratiounder the threshold level. Regeneration of digital audio control bit, is to exchange a range bit and a frame synchronism bit mistakenly received under 4 to 5dB of CN ratio withright bits respectively reproduced in the processor, can eliminate unpleasant noise.