Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1984-08-21
1987-12-01
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340805, G09G 336
Patent
active
047107669
ABSTRACT:
A method and device for displaying symbols by means of a liquid crystal matrix. The device comprises an automation driven by a clock which feeds cyclically to the control circuit of a liquid crystal matrix the bits representative of the elementary images contained in a random access memory. The memory has a capacity greater than k (n+m) bits, k being the multiplexing coefficient and n and m being respectively the number of lines and columns of the liquid crystal matrix. The memory is refreshed by a central computer during the interval of emission of the bits.
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Dubois Marcel
Fagard Pierre
Curtis Marshall M.
Societe Francaise d'Equipements pour la Navigation Aerienne
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