Video display system

Details Video display system Video display system

H - Electricity

04

N

350/104, 343/118

H04N 9/22 (2006.01) G09G 1/00 (2006.01) H04N 9/18 (2006.01)

Patent

CA 1329652

VIDEO DISPLAY SYSTEM ABSTRACT OF THE DISCLOSURE The invention uses a multiple beam cathode ray tube to write a television type raster, or frame, with the maximum data rate and writing speed reduced by a factor equal to the number of simultaneously operating beams. To overcome excessive slope in the picture, a stepped deflection is used such that the majority of vertical deflection occurs after a particular horizontal sweep is completed and before the successive sweep be- gins. The scanning speed is further increased by using an optical transmission filter capable of selectively transmitting separate colors emitted by the screen of the cathode ray tube wherein a portion of the filter may be set to transmit the next color in the color se- quence while the remainder of the filter is transmitting the color presently displayed.

546984

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