Invention Grant
- Patent Title: Motor drive device, timepiece device, and electronic device
- Patent Title (中): 电机驱动装置，钟表装置和电子装置
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Application No.: US13374772Application Date: 2012-01-12
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Publication No.: US08810186B2Publication Date: 2014-08-19
- Inventor: Shotaro Kamiyama , Kenji Ogasawara , Saburo Manaka , Keishi Honmura , Kazumi Sakumoto , Hiroshi Shimizu , Kosuke Yamamoto
- Applicant: Shotaro Kamiyama , Kenji Ogasawara , Saburo Manaka , Keishi Honmura , Kazumi Sakumoto , Hiroshi Shimizu , Kosuke Yamamoto
- Applicant Address: JP
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP
- Agency: Adams & Wilks
- Priority: JP2011-007271 20110117; JP2011-245201 20111109
- Main IPC: H02P8/38
- IPC: H02P8/38 ; H02P8/02
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.
Public/Granted literature
- US20120182840A1 Motor drive device, timepiece device, and electronic device Public/Granted day:2012-07-19
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