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:
Jan. 08, 2013
Filed:
Dec. 15, 2009
Kenji Ogasawara, Chiba, JP;
Akira Takakura, Chiba, JP;
Saburo Manaka, Chiba, JP;
Keishi Honmura, Chiba, JP;
Takanori Hasegawa, Chiba, JP;
Kosuke Yamamoto, Chiba, JP;
Kazumi Sakumoto, Chiba, JP;
Kazuo Kato, Chiba, JP;
Kenji Ogasawara, Chiba, JP;
Akira Takakura, Chiba, JP;
Saburo Manaka, Chiba, JP;
Keishi Honmura, Chiba, JP;
Takanori Hasegawa, Chiba, JP;
Kosuke Yamamoto, Chiba, JP;
Kazumi Sakumoto, Chiba, JP;
Kazuo Kato, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
An invention allows a stepping motor to be reliably driven to rotate when initializing the driving and allows power consumption of the stepping motor to be reduced. The controller, when initializing the driving (for example, replacing a battery), controls a main drive pulse generator to drive a stepping motor using a main drive pulse having a maximum energy and sets the generation cycle of a pulse down control signal of a pulse down counter for pulsing down the main drive pulse to a first cycle to drive the stepping motor, and when pulsing down the main drive pulse to that having a predetermined energy, changes the generation cycle of the pulse down control signal of the pulse down counter to a second cycle.