Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1997-10-30
1999-07-06
Westin, Edward P.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315370, 315371, 315411, H04N 3223, H04N 3185, H04N 323
Patent
active
059201576
ABSTRACT:
A picture stabilizing circuit for a semiwide-screen television receiver capable of preventing vertical lines of the picture from being bent by detecting and compensating for a high-voltage variation caused by a picture brightness variation. In a picture stabilizing circuit for a semiwide-screen television receiver including a high voltage circuit for providing a high voltage induced in a secondary winding of a flyback transformer to an anode of a cathode ray tube, and a horizontal output device for controlling a deflection current using a voltage applied to a primary winding of the flyback transformer as its supply voltage and compensating for the deflection current in accordance with an east/west (E/W) signal, the picture stabilizing circuit comprising: a detecting device for detecting variation of the high voltage in the secondary winding of the flyback transformer and for outputting a signal corresponding to the variation of the high voltage; and an adder for adding the output signal of the detecting device to the E/W signal.
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International Search Report of GB 9724257.2, Feb. 16, 1998.
Shin Kil-Ho
Yang Ye-mok
Gardner Shane R
Samsung Electronics Co,. Ltd.
Westin Edward P.
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