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引言单管彩色摄象机只用一只摄象管。为了从一只摄象管取得彩色信号,现已研究出多种色分离方式(表1), 本文只介绍阶梯能量解调方式。这种方式于七十年代末期,由日本Victor公司研制成功,是一种既不属于频率分离,又不属于相位分离的新方式。这种方式的优点: ①因为条状滤色器(色信号解调)不是利用垂直相关,所以画象垂直端部不会产生假信号,色信号垂直分辨率高。②条状滤色器垂直排列,不容易受摄象管边缘电子束畸变影响,能够获得良好、均匀的色多重信号。③三基色中,绿色滤色器是单独的,虽然使用补色滤色器,但仍富于彩色再现性,能获得真实度高的色再现。
Introduction Single-tube color video camera with only a video tube. In order to obtain a color signal from a video tube, a variety of color separation methods have been developed (Table 1). In this paper, only the step energy demodulation method is introduced. This method in the late seventies, developed by the Japanese Victor company, is neither a frequency separation, but also does not belong to the new phase separation method. Advantages of this approach: ① Because the strip color filter (color signal demodulation) is not to use the vertical correlation, the portrait vertical end will not produce a false signal, the color signal vertical resolution is high. ② strip color filters arranged vertically, not easily affected by the edge of the tube electron beam distortion, to obtain good, uniform color multiple signals. ③ The three primary colors, the green color filter is a separate, although the use of complementary color filter, but still rich in color reproducibility, to obtain a high degree of true color reproduction.