At present there is no source of images and standard used specially for LED super scale color screen,so the signal shown by LED color screen is what is sent to CRT.

• 目前没有专门用于 L E D 彩色大屏幕的图像源及其标准，所以都是将送给 C R T 显像管的图形信号源送到 L E D 彩色大屏幕进行显示。