Visual display systems

G - Physics – 06 – F

Patent

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375/37

G06F 3/14 (2006.01) G09F 9/00 (2006.01) G09G 5/02 (2006.01) G09G 5/42 (2006.01)

Patent

CA 1050671

Abstract of the Disclosure A raster-scan display system for computer-generated images in which each raster line is quantised into a number (N) of sets of image elements each successive set being displaced in time, with respect to the line start, by 1/N of the duration of one element. The corresponding video signals are summed for each line and the resultant signal is displayed. The technique provides a visual image with graded intensity changes more nearly simulating a television type image, invention, a triangular hold technique is used, that is, the display is delayed to permit of a linearly changing intensity charge between consecutive elements of different intensity.

256110

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