Color image display apparatus

Details Color image display apparatus Color image display apparatus

H - Electricity

01

J

350/79, 313/35.1

H01J 29/70 (2006.01) H04N 9/12 (2006.01)

Patent

CA 1199401

ABSTRACT OF THE DISCLOSURE A flat tube video image display apparatus comprising a phosphor screen, an electron beam source having a predeter- mined number of line cathodes for sequentially emitting said predetermined number of horizontal rows of electron beams, each row having a second predetermined number of rod shaped electron beams for collectively producing one hori- zontal line of image on said phosphor screen. A horizontal deflection means is provided for horizontal deflection of the electron beams to selectively emit red, green or blue phosphor stripes. A vertical deflection means is provided for vertical deflection of the electron beams of the hori- zontal rows in order to vertically move one of the horizontal lines in the vertically divided segment. Red, green and blue color signals are time-sequentially sampled by sets of three sampling signals having a time-sequential relationship, and these sampled color signals are impressed on the horizontal deflection means. As a result, the poor horizontal resolution associated with prior art apparatus of this type has been improved such that the sampling frequency of the invention is effectively raised to approxi- mately three times the conventional sampling frequency.

405422

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