Digital display driving circuit

Details Digital display driving circuit Digital display driving circuit

1976-05-19

1979-01-30

Traeton, David L.

Communications: electrical

Visual indication

Movable

340765, 350332, 340805, 361, G02F 113

Patent

active

041375238

ABSTRACT:
An improved digital display driving circuit for driving digital display cells forming a ditigal display is provided. The driving circuit includes an interfacing circuit that in response to being energized receives a first data signal for selectively energizing certain of the display cells and a second drive signal for effecting AC driving of the display cells selectively energized by the data signal. The improved driving circuit is characterized by a DC supply coupled to the interfacing circuit, the AC supply being adapted to energize the interfacing circuit, and a detecting circuit coupled intermediate the DC supply and the interfacing circuit for selectively controlling the energizing of the interfacing circuit by the DC supply in response to the presence or absence of the drive signal being applied to the interfacing circuit to thereby prevent DC driving of the display cells.

REFERENCES:
patent: 3818484 (1974-06-01), Nakamura et al.
patent: 3821627 (1974-06-01), Milovancevic
patent: 3873888 (1975-03-01), Hanchett
patent: 3912977 (1975-10-01), Fillmore

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