Telegraphy – Systems – Simplex-reversing periodic
Patent
1974-12-30
1976-10-26
Martin, John C.
Telegraphy
Systems
Simplex-reversing periodic
178 73D, 315151, 315169TV, 250213A, 250208, H04N 312, H01J 3912, H01J 3150, H05B 3700
Patent
active
039885364
ABSTRACT:
A scanning apparatus having a sequential linear array of electroluminescent devices which are controlled to be successively illuminated by having a pulsed electrical signal applied thereto by means of connections between said devices which insure that only one electroluminescent device at a time is illuminated for a predetermined time, which may be relatively short. Further circuitry provides the sequential enablement of a grid matrix having a plurality of horizontal lines and a plurality of vertical lines in overlying relationship which have a video transducer connecting the horizontal and vertical line at each intersection of the grid matrix so formed. All of the horizontal lines are enabled in sequence for each enablement of a vertical line and the vertical lines are enabled in sequence, or vice versa, thereby providing a complete scan of the grid area.
REFERENCES:
patent: 2881360 (1959-04-01), Livingston
patent: 2900574 (1959-08-01), Kazan
patent: 3020410 (1962-02-01), Bowerman
patent: 3078373 (1963-02-01), Wittenberg
patent: 3110763 (1963-11-01), Lieb
patent: 3223886 (1965-12-01), Glaser
patent: 3258628 (1966-06-01), Acton
patent: 3617823 (1971-11-01), Hofstein
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