Raster distortion correction circuit

Details Raster distortion correction circuit Raster distortion correction circuit

1978-10-10

1980-09-02

Hubler, Malcolm F.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315393, H01J 2970

Patent

active

042208980

ABSTRACT:
A synchronous switched vertical deflection (SSVD) circuit is coupled by a flyback transformer to a horizontal deflection circuit. The SSVD circuit loads the horizontal deflection circuit at a vertical parabolic rate providing East-West pincushion correction. Because of the inductance of the vertical deflection winding, the parabolic loading is asymmetrical, producing a keystone-like raster distortion. A correction circuit, such as a constant current source coupled to the vertical deflection winding, substantially reduces the asymmetry of the loading thereby substantially reducing the keystone-like distortion.

REFERENCES:
patent: 2304057 (1942-12-01), Schade
patent: 2951180 (1960-08-01), Studebaker et al.
patent: 3946274 (1976-03-01), Dietz
patent: 3946274 (1976-03-01), Dietz
patent: 3962602 (1976-06-01), Dietz
patent: 4048544 (1977-09-01), Haferl
patent: 4081722 (1978-03-01), Haferl
patent: 4088931 (1978-05-01), Haferl
patent: 4101814 (1978-07-01), Haferl

Affiliated with

Also associated with

Rating

Raster distortion correction circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Raster distortion correction circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raster distortion correction circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1710820