| 摘要 |
In a display apparatus, e.g., a cathode ray tube, in which the image displayed by the apparatus is processed, e.g., photographed by a camera, a function circuit is provided to generate a brightness compensation voltage determined by the characteristics of the lens of the instantaneous deflection of the cathode ray with the brightness compensation voltage is applied to the brightness adjuster associated with the deflection coils of the cathode ray tube.
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