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现在许多中小电视台在播放电视节目时,仍由手工切换,播放人员必须时刻注意播出的电视节目,以便能够及时切换,稍有不慎,便会产生播出事故,影响播出质量。为了提高播出质量,减轻播出工作人员的劳动强度和精神压力,我们研制了由单片微机8031进行实时控制的电视节目自动程序播出系统。所谓电视节目自动程序播出系统是指用单片微机为控制核心,按预先编排好的节目程序和时间表,对电视信号源设备和视音频开关矩阵进行自动控制,实现电视节目按程序自动播放。
Now many small and medium-sized television stations are still switching manually when they are playing television programs. Players must always pay attention to the television programs broadcast so that they can switch timely and inadvertently. This may result in a broadcast accident and affect the broadcast quality. In order to improve the broadcast quality and reduce the labor intensity and mental pressure of the broadcast staff, we have developed an automatic program broadcast system for television programs controlled by a single chip microcomputer 8031 in real time. The so-called TV program automatic program broadcast system refers to the use of single-chip microcomputer as the control center, according to the pre-arranged program and schedule, on the TV signal source equipment and video and audio switch matrix for automatic control, to achieve the program automatically play TV programs .