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:
Aug. 19, 2014
Filed:
Jan. 12, 2012
Shotaro Kamiyama, Chiba, JP;
Kenji Ogasawara, Chiba, JP;
Saburo Manaka, Chiba, JP;
Keishi Honmura, Chiba, JP;
Kazumi Sakumoto, Chiba, JP;
Hiroshi Shimizu, Chiba, JP;
Kosuke Yamamoto, Chiba, JP;
Shotaro Kamiyama, Chiba, JP;
Kenji Ogasawara, Chiba, JP;
Saburo Manaka, Chiba, JP;
Keishi Honmura, Chiba, JP;
Kazumi Sakumoto, Chiba, JP;
Hiroshi Shimizu, Chiba, JP;
Kosuke Yamamoto, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A motor drive device includes a charging detection and reverse current prevention portion and a pulse selection control portion. The charging detection and reverse current prevention portion detects a charging state of a secondary battery that is charged by an electromotive force of a solar battery, the charging state indicating whether the secondary battery is being charged. The pulse selection control portion causes a first drive pulse for driving a motor to be generated and, in a case where the charging state that is detected by the charging detection and reverse current prevention portion is different after the first drive pulse has been output from what it was before the first drive pulse was output, causes a second drive pulse for driving the motor to be generated.