Pre-correction circuit of the vertical scanning signal of a display tube, and of the television receiver comprising such a circuit

摘要

P the invention relates to the pre-correction of the vertical scanning signal of a tube - image. / p & & p & a pre-correction signal is obtained from the signal v as a saw tooth issued by the oscillator 1, which controls the vertical scanning. A circuit of the inversion of polarity 6 converts the sawtooth triangular signal i which serves as a control signal has a potentiometer electronique 5 which lessens the saw tooth. A mounting differentiator 7 out of the sawtooth signal corrected the pre-correction. / p & & p & the pre-correction signal obtained can be assigned, with the desired correction, the sweep signal for application to 29 of the television and brackets. / p