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本文提出在视频频段用一条同轴电缆同时传输彩色电视的图像信号及其一路或二路伴音信号的新的闭路电视系统。文中对工作原理与调频传送伴音的主要技术性能,进行了较深入的理论分析,并侧重分析了电路非线性对图像质量的影响。这一新的闭路电视系统,具有一定的优点,可供教育、科研、工厂企业单位及对公众开放的服务单位等采用并可供生产单位进行生产。
This paper presents a new CCTV system that uses a coaxial cable to simultaneously transmit video signals of color television and one or two audio signals in the video frequency band. In this paper, the working principle and FM transmission accompaniment of the main technical performance, conducted a more in-depth theoretical analysis, and focused on the analysis of the circuit nonlinearity on the image quality. This new CCTV system has certain advantages that it can be used for education, scientific research, factory business units and service units open to the public, and can be used by production units for production.