Erasable and programmable seven segment display driver

Details Erasable and programmable seven segment display driver Erasable and programmable seven segment display driver

1994-01-07

1995-03-07

Oberley, Alvin E.

Computer graphics processing and selective visual display system

Plural physical display element control system

Segmented display elements

345 33, G09G 304

Patent

active

053962591

ABSTRACT:
An erasable and programmable seven segment display driver includes an oscillator, a signal source selector, a column address generator, a row address generator, a common signal driver, a segment signal driver, an EPROM array, and a seven segment display. A set of preset numerical data is stored in the EPROM memory array for display. The data stored in the memory is programmable and erasable, so numerical data can be reprogrammable in accordance with any desired display data. It is possible to lower the cost and enhance the usability and convenience of the display driver.

REFERENCES:
patent: 3925777 (1975-12-01), Clark
patent: 3962701 (1976-06-01), Heimbigner
patent: 4201984 (1980-05-01), Inami et al.
patent: 4510491 (1985-04-01), Prato
patent: 4622590 (1986-11-01), Togashi
patent: 4799058 (1989-01-01), Okamoto et al.
patent: 4914730 (1990-04-01), Fujita
patent: 5248965 (1993-09-01), Yoshimitsu

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