Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2008-05-27
2008-05-27
Mengistu, Amare (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C315S169100, C315S169200, C315S169300
Reexamination Certificate
active
07379036
ABSTRACT:
A driving circuit for a vacuum fluorescent display for pulse-driving a filament of the vacuum fluorescent display with a pulse voltage. The driving circuit comprises a detecting unit for detecting that the level of the pulse voltage is fixed, and outputs a detection signal indicative of the result of the detection. Preferably, the driving circuit comprises a control unit for controlling at least one output of the outputs of the filament driving unit, the grid driving unit and the segment driving unit in order to terminate the driving of at least one of the filament, the grid electrode and the segment electrode, based on the detection signal.
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European Examination Report dated Aug. 14, 2006, issued in connection with European Patent Application No. 04 251 789.6-2205 (6 pages).
Display Technologies Series: Vacuum Fluorescent Displays 8.2 The Basic Driving Circuits (pp. 154-158), Sangyo Tosho, incl. English-language translation.
Arai Hiroyuki
Kimura Takeshi
Motegi Syuji
Tokunaga Tetsuya
Chow Yuk
Fish & Richardson P.C.
Mengistu Amare
Sanyo Electric Co,. Ltd.
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