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. 18, 2012
Filed:
Dec. 11, 2008
Hiroo Yabe, Susono, JP;
Tsuyoshi Uchikura, Kosai, JP;
Tatsumi Tashiro, Toyota, JP;
Akihiro Tanaka, Toyota, JP;
Masahiro Kasai, Toyota, JP;
Hiroo Yabe, Susono, JP;
Tsuyoshi Uchikura, Kosai, JP;
Tatsumi Tashiro, Toyota, JP;
Akihiro Tanaka, Toyota, JP;
Masahiro Kasai, Toyota, JP;
Yazaki Corporation, Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A load controller includes: an input circuit which detects that a drive instruction signal is less or equal to a first input threshold value; a constant current source activated in accordance with a detection by the input circuit; a PWM signal generating unit that is activated by the constant current source and generates a PWM signal; a comparator that is activated by the constant current source and compares the drive instruction signal with a second input threshold value set to be lower than the first input threshold value; a logic calculation unit that carries out a logic calculation of the PWM signal with a compared result of the comparator; a drive control unit that operates in accordance with an output from the logic calculation unit to generate a PWM drive control signal; and a load driving element that is driven by the PWM drive control signal to control a load.