Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1998-05-29
2000-09-12
Shankar, Vijay
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345108, G09G 334
Patent
active
061184187
ABSTRACT:
A pixel for use in a visual matrix display including a frame having front and rear surfaces and defining an aperture; a light source oriented in the aperture; a first retroreflective surface borne by the frame and positioned adjacent to the aperture; a flap borne by the front surface and moveable along a given path of travel between a first position wherein the pixel is nonoperational, and the flap is disposed in covering relation relative to the light source, and a second operational position, wherein the flap has a second retroreflective surface which is exposed when the flap is in the second position; means borne by the frame for moving the flap along the given path of travel; and means for energizing the light source when the flap is in one of the given positions along the path of travel.
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Cummings Kenneth R.
Hanson Kevin M.
Johnson Jerry L.
Wilson Edward A.
American Electronic Sign Company
Piziali Jeff
Shankar Vijay
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