Method of and circuit for correcting linearity of horizontal def

Details Method of and circuit for correcting linearity of horizontal def Method of and circuit for correcting linearity of horizontal def

1988-01-11

1989-01-03

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315371, 358140, H01J 2956, H04N 701

Patent

active

047959460

ABSTRACT:
A CRT monitor selectively displays video signals having different numbers of scanning lines. A distortion at a substantially lefthand side of the screen of the CRT monitor is corrected by S correction capacitor and a nonlinearity correcting coil which are connected in series to a horizontal deflection yoke of the CRT monitor. A distortion at a substantially righthand side of the screen of the CRT monitor is corrected by an output signal supplied to a subyoke of the CRT monitor from a function generator, the output signal being controlled by a horizontal frequency of an applied video signal.

REFERENCES:
patent: 4588929 (1986-05-01), Wedam et al.
patent: 4691147 (1987-09-01), Kashiwagi

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