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:
Jan. 31, 2012

Filed:

Jul. 30, 2009
Applicants:

Nobutaka Tauchi, Toyoake, JP;

Tetsuya Oki, Nagoya, JP;

Mikinari Yokoi, Ama-gun, JP;

Shojiro Takeuchi, Tokyo, JP;

Kazuya Sasaki, Sunto-gun, JP;

Osamu Ozaki, Mishima, JP;

Masumi Kobana, Fuji, JP;

Inventors:

Nobutaka Tauchi, Toyoake, JP;

Tetsuya Oki, Nagoya, JP;

Mikinari Yokoi, Ama-gun, JP;

Shojiro Takeuchi, Tokyo, JP;

Kazuya Sasaki, Sunto-gun, JP;

Osamu Ozaki, Mishima, JP;

Masumi Kobana, Fuji, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60Q 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

When it is determined that a head light is turned on, the sunset time is calculated. Thus, the frequency of calculating the sunset time is significantly decreased as compared with that of continuously calculating the sunset time, thereby reducing the processing load. Further, as compared with the case where the sunset time is calculated regardless of the time of lighting on, the calculated sunset time can evaluate the time of lighting on appropriately.


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