Blue bow correction for CRT raster

Details Blue bow correction for CRT raster Blue bow correction for CRT raster

1985-09-30

1987-03-31

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

313427, H01F 100

Patent

active

046546162

ABSTRACT:
In a video display system in which a cathode ray tube exhibits blue bow misconvergence, a correction arrangement includes areas of magnetizable material located within recesses formed in the deflection yoke insulator. The material lies between the end turns of the horizontal coils along the sides of the yoke. The material is magnetized to form a four-pole field to effect correction of the blue bow error.

REFERENCES:
patent: 4145677 (1979-03-01), Maruyama et al.
patent: 4162470 (1979-07-01), Smith
patent: 4232283 (1980-11-01), Werst
patent: 4253078 (1981-02-01), Tagawa et al.
patent: 4388602 (1983-06-01), Dodds

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