| 摘要 |
The format of a color video signal that has been inputted into a CPU from a video amplifying circuit is identified, and based on a given parameter variable according to this identified format, a second grid electrode voltage and the cathode bias voltages of cathodes for the three primary colors are determined, thereby driving a cathode ray tube with an optimal driving condition adequate for the video signal format. This parameter variable may be adjusted through a manual operation, allowing a user to set any desired driving condition for the cathode ray tube.
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