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.

Date of Patent:
Feb. 27, 2018

Filed:

Dec. 01, 2015
Applicants:

Yazaki Corporation, Tokyo, JP;

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Inventors:

Yasuyuki Shigezane, Susono, JP;

Shuuji Satake, Susono, JP;

Takeshi Yamashita, Makinohara, JP;

Mitsuaki Maeda, Makinohara, JP;

Terumitsu Sugimoto, Makinohara, JP;

Yasushi Ohba, Makinohara, JP;

Nobuyoshi Imaeda, Kariya, JP;

Makoto Sunohara, Kariya, JP;

Hisanori Katou, Kariya, JP;

Masahiro Kasai, Toyota, JP;

Assignees:

YAZAKI CORPORATION, Minato-ku, Tokyo, JP;

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); G09G 3/32 (2016.01); H05B 33/08 (2006.01); G09G 3/34 (2006.01); G09G 3/36 (2006.01); G09G 3/20 (2006.01);
U.S. Cl.
CPC ...
H05B 37/0209 (2013.01); G09G 3/2003 (2013.01); G09G 3/2014 (2013.01); G09G 3/342 (2013.01); G09G 3/3406 (2013.01); G09G 3/3413 (2013.01); G09G 3/3426 (2013.01); G09G 3/3433 (2013.01); G09G 3/3648 (2013.01); H05B 33/0815 (2013.01); H05B 33/0866 (2013.01); H05B 33/0893 (2013.01); H05B 37/0227 (2013.01); H05B 37/0281 (2013.01);
Abstract

A luminance control device and a luminance control method for controlling luminance of a light emitting member are provided in order to reduce the amount of information to be stored while preventing the user from feeling uncomfortable. The CPU divides by the interpolation division number a value obtained subtracting the reference duty ratio from the reference duty ratio so as to calculate an interpolation variation width, and integrates the interpolation variation width to the reference duty ratio every time the interpolation period elapses, and the variation width in the luminance of the LED is therefore reduced, preventing users to feel uncomfortable, which allows for suppressing the amount of information to be stored.


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