PROJECTION TELEVISION RECEIVER

PROBLEM TO BE SOLVED: To prevent occurrence of blooming in the case that a bright video image is displayed with a simple circuit configuration. SOLUTION: Red, green, blue velocity modulation coils 13R, 13G are placed to both upper and lower side of vertical axes of necks 22R, 22G of red, green catho...

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Bibliographische Detailangaben
1. Verfasser:	ARAI MICHIAKI
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION BASIC ELECTRIC ELEMENTS CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRICITY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SEALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To prevent occurrence of blooming in the case that a bright video image is displayed with a simple circuit configuration. SOLUTION: Red, green, blue velocity modulation coils 13R, 13G are placed to both upper and lower side of vertical axes of necks 22R, 22G of red, green cathode ray tubes 21R, 21G. The blue velocity modulation coil 13B is placed at both upper and lower parts of a vertical axis of the neck 22B of the blue cathode ray tube 21B, and number of windings of the blue velocity modulation coil 13B is selected more than that of the red, green velocity modulation coils 13R, 13G. A velocity modulation circuit 12 provides an output of a velocity modulation signal from an output terminal pair to supply a current to generate a magnetic field modulating the scanning speed in the horizontal direction to the red, green, blue velocity modulation coils 13R, 13G, 13B.