Display control circuit

Details Display control circuit Display control circuit

1985-08-28

1990-09-18

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340811, G09G 336

Patent

active

049581511

ABSTRACT:
In an integrated circuit for arithmetic operation and display control connected to a power source (46) and a liquid crystal display device (45), and energized by the power source, including an arithmetic operation circuit (42) for performing a designated artithmetic operation, wherein the result of the arithmetic operation is displayed by the display device, a boosting circuit (43) receives and boosts the voltage from the power source (46), a drive circuit (44) is powered by the boosting circuit (43) to drive the liquid crystal display device (45), and a control circuit (41) causes interruption of the driving of the display device when the arithmetic operation circuit (42) is carrying out the arithmetic operation.

REFERENCES:
patent: 3818484 (1974-06-01), Nakamura et al.
patent: 3962571 (1976-06-01), Brantingham
patent: 3973254 (1976-08-01), Nomiya et al.
patent: 4441106 (1984-04-01), Jackson

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