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:
Apr. 23, 2002
Filed:
Jan. 06, 2000
Applicant:
Inventors:
Assignee:
Pioneer Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/30 ;
U.S. Cl.
CPC ...
G09G 3/30 ;
Abstract
An EL device driving apparatus enables substantial light emission luminance characteristics to be kept constant even if an environmental temperature fluctuates. The apparatus includes a driving unit for selectively supplying a light emission driving energy to EL devices, a temperature sensing unit for sensing an operation temperature, and a temperature compensating unit for changing the light emission driving energy in accordance with the operation temperature.