Control process and device for liquid crystal display

Details Control process and device for liquid crystal display Control process and device for liquid crystal display

1987-02-12

1989-03-07

Caldwell, Sr., John W.

Communications: electrical

Land vehicle alarms or indicators

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

340756, 340642, G08B 2100

Patent

active

048110051

ABSTRACT:
To check the signals of the electrodes of a 7-segment display, the device comprises a multiplexing assembly, a detector of the level of the signals, a generator of clock signals of different frequencies, a pulse counter, and an anomaly detector.

REFERENCES:
patent: 3579205 (1971-05-01), Aga et al.
patent: 4311993 (1982-01-01), Strobel
patent: 4541066 (1985-09-01), Lewandowski
patent: 4638247 (1987-01-01), Ishikawa
Vellieux, "La Commande des Afficheurs a Cristaux Liquides", Toute L'Electronique, No. 491, Feb. 1984, pp. 76-81.

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