(under subclass 364) Subject matter wherein the cathode-ray tube includes a cathode-ray beam source and a fluorescent screen formed of plural phosphor materials, each material being capable of emitting a different color of light when struck by the cathode-ray beam and the electrical circuit connected to the deflection means, acting alone or in combination with focusing means or phasing means, has circuitry to cause the cathode-ray beam, when present, to impinge selectively on one or more phosphor materials.
(1) Note. Switching circuits which rely on secondary emission to excite the various phosphors of a color to be are found in subclasses 10+ of this class.
(2) Note. See subclass 369 for deflection circuits which select the appropriate phosphor in a color tube and which also control the deflections of the cathode-ray beam striking a target.
(3) Note. The deflection means for the most part is the post deflection type. However, some systems utilize a raster type deflection means in combination with a mask or focus screen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
10, for a light detector system responsive to the light emitted from a screen of a colored cathode-ray tube, which system corrects its direction of the rays hitting the screen through the deflection system associated with the tube. 13, for cathode-ray tube circuits which include plural cathode-ray beam tubes and wherein the plural beams may be arranged to excite a plurality of separate, distinct color phosphors.
368, for cathode-ray tube deflection circuits which include a color convergence control circuit and which have a plural phosphor target.
369, for cathode-ray tube deflection circuits which include a target which controls the deflection of a cathode-ray beam.
SEE OR SEARCH CLASS
250, Radiant Energy,
486.1, for fluorescent or phosphorescent devices having plural luminescent materials.
313, Electric Lamp and Discharge Devices,
399+, for color cathode-ray tubes with secondary emissive electrodes, 402+ for color shadow masks per se or in combination with a color cathode-ray tube, 426+ for plural cathode-ray deflection means, and 429+ for post deflection
electrode grid arrangements.
348, Television,
810, for a plural phosphor cathode-ray tube color television system including deflection circuits to direct the ray beam to the proper phosphor of the tube.
