Magnetically operated matrix display panel and elements therefor

Details Magnetically operated matrix display panel and elements therefor Magnetically operated matrix display panel and elements therefor

1981-06-26

1983-11-22

Swann, III, Glen R.

Communications: electrical

Visual indication

Movable

40449, 34081509, 34081526, 340764, G06K 1518

Patent

active

044172419

ABSTRACT:
A display panel which is provided with a display surface structure having a large number of display elements rotatably arranged in a vertical plane. The display elements are each formed by a block member having a plurality of display surfaces of different colors and a plurality of magnetic pieces. One of the magnetic pieces is shorter than the others in a lateral direction. By successive movement of head assemblies, each comprised of a first erasing head, a second erasing head and a writing head, one or more of the display elements are turned to bring a predetermined one of their display surfaces to the front of the display surface to erase a display of a character, graph, pattern or the like provided thereon, thereafter bringing a selected one of the display surfaces of a selected display element or elements to the front of the display surface to provide thereon a display of a character, graph, pattern or the like.

REFERENCES:
patent: 4177458 (1979-12-01), Wakatake
patent: 4264906 (1981-04-01), Wakatake

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