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:
Oct. 07, 2008
Filed:
Mar. 03, 2006
Tomonori Kamiya, Ichinomiya, JP;
Takeshi Kura, Ogaki, JP;
Yukihiko Shigeoka, Ogaki, JP;
Naohiro Nishiwaki, Ogaki, JP;
Tomonori Kamiya, Ichinomiya, JP;
Takeshi Kura, Ogaki, JP;
Yukihiko Shigeoka, Ogaki, JP;
Naohiro Nishiwaki, Ogaki, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A motor control circuit for reducing current consumption. A stepping motor control circuit includes an A/B phase current setting signal generation circuit for generating an A/B phase current signal setting signals provided to a stepping motor driver to supply a stepping motor with a predetermined amount of drive current. Based on a switch signal, first and second switches selectively output an A/B phase current setting signal and an A/B phase reference signal, for reducing the drive current of the stepping motor more than the A/B phase current setting signal. An intermittent drive control circuit generates the switch signal. The stepping motor control circuit provides the motor driver with the A/B phase reference signal in accordance with the switch signal.