近几年来,随着我国电视广播事业的发展,各省、地、州、市大专院校、厂矿企业象雨后春笋一般建立起来了各自的电视台和电教室及制作中心。因此电视节目的制作也得到了迅速的发展,但在制作电视作品时,经反复编改筛选镜头、配字、配音后,就会出现电视作品图象信号严重损失,信号雪花大,彩色失真等问题。 In recent years, with the development of the television broadcasting in our country, all provinces, prefectures and cities, municipalities, factories and mines have mushroomed their television stations and classrooms and production centers. Therefore, the production of television programs has also been rapidly developed. However, in the production of television productions, serious loss of the image signal of television works, heavy snowfall, color distortion, etc. after the screening and matching of words and dubbing are repeated problem.