Parabolic-wave shaping circuit for focus-correction

Details Parabolic-wave shaping circuit for focus-correction Parabolic-wave shaping circuit for focus-correction

1997-04-21

1998-06-09

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

G09G 104

Patent

active

057640050

ABSTRACT:
A parabolic-wave shaping circuit for focus-correction which can output only the necessary part of a parabolic-waveform for focus-correction is constructed so as to clip an output waveform of an output amplifier amplifying a parabolic-wave having a horizontal scanning period for a period of a blanking time of a video signal with a clipping circuit composed of a diode and a variable voltage-regulating resistor for adjusting the clipping level.

REFERENCES:
patent: 5534757 (1996-07-01), Takatori
patent: 5633581 (1997-05-01), Takatori

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