| 摘要 |
Provided is a cathode ray tube video display device, including: a micro computer for receiving data of factors affecting the brightness of a screen with time, computing a decreased amount of the brightness of the screen to compensate for the decreased amount and outputting a screen brightness compensation signal; and cathode ray tube controlling means for receiving the screen brightness compensation signal output from the micro computer, controlling a brightness level of a chrominance signal applied externally according to a level of the screen brightness compensation signal, and compensating the brightness of the screen which is decreased with time.
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