Dynamic convergence system for color cathode ray tubes having an

Details Dynamic convergence system for color cathode ray tubes having an Dynamic convergence system for color cathode ray tubes having an

1992-07-02

1993-08-03

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313413, 313414, 313428, 313431, 313437, 335213, H01J 2956, H01J 2951

Patent

active

052332675

ABSTRACT:
A color cathode ray tube equipped with an in-line type electron gun, a deflection yoke designed to generate a uniform deflection magnetic field, the in-line type electron gun having a focusing grid which accommodates three pole pieces of magnetic bodies, and a magnetic field generator disposed outside the cathode ray tube so as to apply 4-pole dynamic magnetic fields to the pole pieces, thus constituting a dynamic convergence system capable of correcting any misconvergence of the three electron beams in a vertical direction or a horizontal direction.

REFERENCES:
patent: 2157182 (1939-05-01), Maloff
patent: 3594600 (1971-07-01), Murata et al.
patent: 3946266 (1976-03-01), Saito et al.
patent: 4625144 (1986-11-01), Kornaker
patent: 4642527 (1987-02-01), Takahashi et al.
patent: 4961021 (1990-10-01), Ogura et al.

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