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一、电路工作原理由于各种摄像机的摄像器件和滤色器的滤色形式各异,因而在色信号处理方式中也有所不同。本讲在分析MC-20机型色信号处理电路的同时,对采用MOS型摄像器件,并运用W(白)G(绿)、Cy(青)Ye(黄)滤色器的摄像机色信号处理通路作系统阐述。在色信号处理通路中,有些电路与亮度通路中的相应电路在名称、功能上基本相同;诸如,v校正电路、箝位电路,AGC电路、淡入淡出控制电路等等。另一些特殊工作电路,包括解调电路、色差信号形成电路和编码电路。在信号处理过程中还涉及到白平衡控制,及其它
First, the circuit works As a result of a variety of camera camera and filter color filter in different forms, and thus the color signal processing methods are also different. This paper analyzes the MC-20 model color signal processing circuit at the same time, the use of MOS-type imaging device and the use of W (white) G (Green), Cy (Green) Ye Access for system elaboration. In the color signal processing path, some of the circuits are basically the same in name and function as the corresponding circuits in the luminance path; such as the v correction circuit, the clamp circuit, the AGC circuit, the fade control circuit, and the like. Other special operating circuits, including demodulation circuit, color difference signal forming circuit and coding circuit. The signal processing also involves white balance control, among others