Information display system having digital logic interconnections

Details Information display system having digital logic interconnections Information display system having digital logic interconnections

1977-06-27

1979-07-31

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340762, 340813, G06F 314

Patent

active

041632281

ABSTRACT:
An information display system is characterized by a visual display board which includes a plurality of display panels, each panel having an arrangement of lamps associated therewith. Also provided is a keyboard having a plurality of keys, each key corresponding to a predetermined informational character, the actuation of which generates an electrical signal of predetermined duration. Circuit control means, including a logic arrangement, is associated with each display panel and connected electrically with the keyboard. The control means is operable to sequentially illuminate selected ones of the plurality of lamps associated with each display panel to display on each panel a single informational character in response to the electrical signal generated by actuation of the predetermined one of the keys. Means are associated with the logic arrangement for sequentially enabling the control circuit for the next-successive panel upon the illumination and display of an informational character on a given panel.

REFERENCES:
patent: 1054336 (1913-02-01), Brown
patent: 2146576 (1939-02-01), Haselton et al.
patent: 3178699 (1965-04-01), Burton
patent: 3493957 (1970-02-01), Brooks
patent: 3526887 (1970-09-01), Erni
patent: 3684870 (1972-08-01), Nelson

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