一、基本构思电视图象切换是电视节目制作中的主要技巧之一,而“快切”则在节目制作中应用最广。在电视教学、体育节目转播、电视答辨竞赛等场合,由多台摄象机、一台录象机,通过切换设备完成画面选择预编,或记录在磁带上,或直接发送到用户的这一系统,可减少摄制人员的劳动强度和投入设备的数量。以往上述场合节目的制作,要么每一个场景一套摄录系统,经过后期编辑;要么用一套或两套摄录系统,由摄象师不停的“摇、移”,以便摄取每一个场景。近年来国内各系统用的最多的是进口或国产大型特技切换系统。对于小规模电视台或院校、电教系统,可能会出现由于投资过大而一时难以实现的情况。针对这种情况,本文设计并调试出一台四入/一出集成电路电视图象 First, the basic idea Television image switching is one of the main techniques in the production of television programs, and “fast cut” is the most widely used in program production. In the teaching of television, sports broadcast programs, television contest and other occasions by the answer, from multiple cameras, a video recorder, through the switching device to complete the screen to select pre-compiled, or recorded on tape, or directly to the user of this A system that reduces the crew’s labor intensity and the amount of equipment put into operation. In the past the production of these occasions, or a set of scenes for each scene recording system, after editing; or with one or two sets of video recording system, the cameraman constantly “shake, shift” in order to capture each scene . In recent years, most domestic systems are imported or domestic large stunt switching system. For small-scale television stations or institutions, audio-visual systems, it may be difficult to achieve due to excessive investment. In response to this situation, this article designed and debugged a four into / out of the integrated circuit television images