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在“彩色移频式”录象机或“外差”式录象机中,色度信号和亮度信号是分离记录的。这种录象机有许多固有的局限性,手动校正能克服其中某些不足之处,但操作人员反复调节常常会降低校正效果。现研制了一种能克服彩色移频式录象机许多缺点的自动增强系统,本文将予以叙述。
In “color frequency shift” video recorders or “heterodyne” video recorders, chrominance signals and luminance signals are recorded separately. This video recorder has many inherent limitations. Manual calibration can overcome some of these deficiencies, but repeated adjustments by the operator often reduce the correction. An automatic enhancement system that overcomes many of the shortcomings of color-shift video recorders has been developed and will be described in this paper.