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:
Jan. 24, 1989
Filed:
Jul. 09, 1986
Hiroshi Demura, Toyota, JP;
Akira Kawahashi, Stanford, CA (US);
Kazumi Hayashi, Okazaki, JP;
Sadao Kokubu, Aichi, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
A liquid crystal antidazzle mirror for turning OFF a power of a liquid crystal drive control circuit by a power switch provided between the liquid crystal drive control circuit and a power source comprising a capacitor of a predetermined capacity disposed between the power switch and the liquid crystal drive control circuit and connected in parallel between power lines to supply power from the capacitor to at least a mode memory circuit in the liquid crystal drive control circuit for a predetermined time determined by the discharging characteristic of the capacitor when the power switch is opened. Thus, the mirror can reset the set mode of the antidazzle mirror to the used mode immediately before a power switch is opened when the power switch is closed within a predetermined time after the power switch is opened.