Picture display device with symmetrical deflection

Details Picture display device with symmetrical deflection Picture display device with symmetrical deflection

1988-05-23

1989-05-23

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315399, 358158, H01J 2970, H01J 2976

Patent

active

048333719

ABSTRACT:
A picture display device for displaying a picture by means of a line raster consisting of a plurality of lines which are successively scanned in the opposite direction includes a video signal processing circuit for receiving an incoming video signal comprising video information and synchronizing signals and for supplying the video information of a line in one direction and the video information of the subsequent line in the opposite direction, and a line deflection circuit for generating a line deflection current through a line deflection coil. To minimize the power which is dissipated in the line deflection circuit, this circuit constitutes a self-oscillating stage with its natural frequency which is determined by a resonant network comprising the line deflection coil and which is independent of the frequency of the line synchronizing signal in the incoming video signal.

REFERENCES:
patent: 4660080 (1987-04-01), Dietz et al.

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