伴随着我国数字电视技术的不断进步和完善,电视频道也在逐步走向专业化,编播也更加数字化,特别是数字硬盘的播出系统的广泛应用,在广播电视的实际工作中也逐步代替了以相关的切换台为信号源的切换中心,由于电视台中录像机在运行过程中容易出现机械性的问题,加上录像机本身成本较高,也就使得 Along with the continuous improvement and perfection of the digital television technology in our country, the television channels are gradually becoming more specialized. The compilation of broadcasting is also more digital. In particular, the widespread application of the digital hard disk broadcasting system gradually replaces the practical work of radio and television With the relevant switching station as the signal source switching center, because of the TV station in the operation of the recorder prone to mechanical problems, coupled with the high cost of the recorder itself, it makes