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:
Dec. 25, 2001
Filed:
Sep. 08, 2000
Masaaki Kawauchi, Kariya, JP;
Muneaki Matsumoto, Okazaki, JP;
Masahiko Osada, Hekinan, JP;
Noriyuki Mase, Handa, JP;
Denso Corporation, Kariya, JP;
Abstract
A driving apparatus for vehicular display unit which can adequately perform dimming control in both daytime display condition and nighttime display condition. A controller changes a charging time of EL elements by changing a pulse width of a PC bar signal based on a day/night switching signal D/N in a scanning signal generator. When a display condition of El panel is switched from daytime display condition to nighttime display condition, the controller changes a driving frequency in a HSYNC bar signal generator. The controller also changes the driving frequency during the daytime display period when it is required to dim at multi-steps with relatively small changing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile