The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2008
Filed:
Mar. 25, 2004
Hiroyuki Arai, Gunma, JP;
Syuji Motegi, Tochigi, JP;
Takeshi Kimura, Tochigi, JP;
Tetsuya Tokunaga, Gunma, JP;
Hiroyuki Arai, Gunma, JP;
Syuji Motegi, Tochigi, JP;
Takeshi Kimura, Tochigi, JP;
Tetsuya Tokunaga, Gunma, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
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.