Picture display device

Details Picture display device Picture display device

1990-04-04

1992-12-08

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313403, G09G 104, H01J 2980

Patent

active

051701022

ABSTRACT:
Picture display device comprising an in-line color display tube having an elongate display screen with a short axis and a long axis, which screen is provided on an inner surface, and a deflection system. The plane in which the undeflected electron beams are located is parallel to the short axis of the display screen. The deflection system comprises a first system of deflection coils for generating a substantially pincushion-shaped deflection field in the direction of the short axis of the display screen and a second system of deflection coils for generating a substantially barrel-shaped deflection field in the direction of the long axis of the display screen. The deflection system has terminals to be connected to a signal generator for scanning the display screen in a raster having a plurality of lines oriented along the short axis of the display screen.

REFERENCES:
patent: 3426239 (1969-02-01), Kushner
patent: 4369396 (1983-01-01), Judd
Heijnemans et al "The deflecton coils of the 30AX colour picture system", Philips Technical Review 39, No. 6/7 (1980) pp. 154-171.

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