Image distortion correcting circuit

Details Image distortion correcting circuit Image distortion correcting circuit

1989-12-12

1991-07-16

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

H01J 2970, H01J 2976

Patent

active

050327704

ABSTRACT:
A voltage of a high voltage power source for accelerating an electron beam of a CRT varies responding to brightness of an image on a screen of the CRT, and a deflection angle of the electron beam is varied accordingly, the variation of the voltage is detected and is superimposed on a direct current power source voltage of a horizontal deflection circuit, hence a horizontal deflection output current of the horizontal deflection circuit is varied and the deflection angle of the electron beam is regulated to compensate the variation of the deflection angle due to the voltage variation of the high voltage power source.

REFERENCES:
patent: 4823052 (1989-04-01), Onozawa et al.

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