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:
Jul. 15, 2008
Filed:
Mar. 25, 2004
Applicants:
Hiroyuki Arai, Gunma, JP;
Syuji Motegi, Tochigi, JP;
Takeshi Kimura, Tochigi, JP;
Tetsuya Tokunaga, Gunma, JP;
Inventors:
Hiroyuki Arai, Gunma, JP;
Syuji Motegi, Tochigi, JP;
Takeshi Kimura, Tochigi, JP;
Tetsuya Tokunaga, Gunma, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/22 (2006.01);
U.S. Cl.
CPC ...
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.