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彩色电视是一种彩色复现技术,其根本任务就是利用无线电电子学的方法在彩色电视机的屏幕上正确地复现电视摄象机前面的彩色信息。所谓正确地复现,包括了两个概念。其一、屏幕上第个象素的亮度必须要和景物上每个点的亮度或同一个比例,不允许一些点的亮度相对于另一些点的亮度点发生变化。其实,这也就是黑白电视的基本要求,所以不在此赘述了。其二、屏幕上各个象素的颜色必须和原来景物的颜色相同。这也就是彩色电视与黑白电视的不同之处。
Color television is a color reproduction technology whose basic task is to use radio electronics to correctly reproduce the color information in front of the TV camera on the color TV screen. The so-called right to reproduce, including the two concepts. First, the brightness of the first pixel on the screen must be the same as the brightness of each point on the scene, not allowing the brightness of some points to change relative to the brightness of other points. In fact, this is the basic requirement of black and white TV, so I will not go into details here. Second, the color of each pixel on the screen must be the same as the color of the original scene. This is the difference between color TV and black and white TV.