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一台彩色电视接收机包含黑白电视接收机的全部电路和解调与显示图像彩色部分所需要的另外增加的一些电路。为了按彩色显示图像,必须得到三个视频信号,即基色红、绿、蓝视频信号。 彩色阴极射线管(CRT)上有三种彩色荧光粉,每一种彩色荧光粉在被电子轰击时
A color television receiver contains the full circuitry of the black-and-white television receiver and some additional circuitry needed to demodulate and display the color portion of the image. In order to display an image in color, three video signals must be obtained, that is, primary color red, green and blue video signals. There are three kinds of color phosphors on a color cathode ray tube (CRT). When each of the color phosphors is bombarded by electrons