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:
Sep. 01, 1992
Filed:
Jun. 15, 1990
Yohsio Matsuno, Machida, JP;
Shinichiro Choji, Machida, JP;
Kenichi Sasaki, Neyagawa, JP;
Yoshinori Tanabe, Hirakata, JP;
Nissan Motor Company, Limited, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The brightness within a vehicle room is adjusted according to external brightness (i.e. illuminance or luminance) at night in such a way that the brightness is increased with increasing external brightness and decreased with decreasing external brightness, under due consideration of human eye adaptation to external lightness and darkness. Therefore, the passenger can read a book, for instance, at roughly a constant visual sensitivity, without being subjected to the influence of change in external illuminance or luminance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile