| 摘要 |
PURPOSE:To confirm the color purity, by coating different luminous substances on a screen corresponding to horizontal deflection positions and displaying each color on the screen. CONSTITUTION:Switching circuits 35a-35n consist of each three analog switches 35aR, 35aG and 35aB, the control terminal is connected to pulse outputs (r), (g) and (b) of a switching pulse generating circuit 36 and signals of red, green and blue are outputted for a prescribed time. Analog switches 52-57 are connected to memories 32a-32n and when a switch 50R for control is set on and 50B, 50G are set off, the content of memory of red signals only is inputted to the switching circuits 35a-35n. Thus, through the switches 50R, 50G and 50B, an output on a screen can be done singly or through arbitrary combinations. |
