Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1977-01-07
1979-07-24
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340755, 340760, 340792, 340819, G06F 314, G09F 900
Patent
active
041624939
ABSTRACT:
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 of beta apparent motion to enable a moving image of a high resolution to be produced with the use of a small proportion for example 1/8, of the number of 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.
REFERENCES:
patent: 3555505 (1971-01-01), Srogi
patent: 3846784 (1974-11-01), Sinclar
patent: 3958235 (1976-05-01), Duffy
patent: 3999179 (1976-12-01), Prame
Ross John
Sala-Spini Amedeo F.
Curtis Marshall M.
Random Electronics International Pty. Limited
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