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:
Jul. 23, 2013
Filed:
Oct. 20, 2008
Takashi Kawasaki, Susono, JP;
Takashi Kawasaki, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A control signal output unit () outputs a rotational direction signal indicating a rotational direction of a motor () and a pulse width modulation control signal. A motor-driving unit () drives the motor () based on the pulse width modulation control signal and rotational direction signal inputted therein. A connection unit () electrically connects the control signal output unit () and the motor-driving unit () to transmit the pulse width modulation control signal and rotational direction signal outputted from the control signal output unit () to the motor-driving unit (). The motor-driving unit () comprises a trouble-detecting unit (). The trouble-detecting unit () successfully detects an occurrence of a trouble in the connection unit () by comparing the duty ratio in the inputted pulse width modulation control signal with the rotational direction in the inputted rotational direction signal.