Driving circuit for vacuum fluorescent display

Details Driving circuit for vacuum fluorescent display Driving circuit for vacuum fluorescent display

2004-03-25

2008-07-15

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C315S169300

Reexamination Certificate

active

07400307

ABSTRACT:
A driving circuit for a vacuum fluorescent display having a filament, a grid electrode and a segment electrode, the driving circuit comprising a filament driving unit for driving the filament; a grid driving unit for pulse-driving the grid electrode; and a segment driving unit for pulse-driving the segment electrode, wherein the driving circuit comprises a controlling unit for validating or invalidating the output of the filament driving unit at a proper timing.

REFERENCES:
patent: 4340889 (1982-07-01), Knight et al.
patent: 4968917 (1990-11-01), Harris
patent: 6005538 (1999-12-01), Hoekstra
patent: 7113163 (2006-09-01), Nitta et al.
patent: 2002/0171614 (2002-11-01), Yoshitami et al.
patent: 2002-108263 (2002-04-01), None

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