Graphic display systems

Details Graphic display systems Graphic display systems

G - Physics

08

G

375/18

G08G 3/00 (2006.01) G09G 3/00 (2006.01)

Patent

CA 1082825

ABSTRACT OF DISCLOSURE A graphic display system in which the lights of an array of lights arranged in dot matrix form are illuminated to produce the illusion of a moving sign displaying letters, words, numbers etc. in which use is made of the phenomenon whereby, if two discs of light are presented briefly and in succession to different areas of the retina, movement tends to appear in the direction of the succession. This is known as "beta apparent motion" and, in the present invention, it is used to enable a moving image of a high resolution to be produced with the use of a small proportion (for, example ? th), of the number or individual lights that would normally be considered necessary. The lights are preferably arranged in columns, lights in consecutive columns being illuminated in turn in the direction of apparent movement of the image.

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