Title:
時計、電子機器、および時計の制御方法
Document Type and Number:
Japanese Patent JP7066361
Kind Code:
B2
Abstract:
A timepiece includes a voltage detection unit that detects a voltage applied to a stepping motor for driving an indicating hand, and that outputs a voltage detection result, and a drive control unit that controls a rotor to perform reverse rotation by using a reverse rotation pulse including a first pulse whose polarity is the same as that of a normal rotation pulse for causing the rotor of the stepping motor to perform normal rotation, a second pulse whose polarity is reverse to that of the first pulse, and a third pulse whose polarity is reverse to that of the second pulse, and to control the rotor to perform the reverse rotation by using the third pulse having a pulse width set in accordance with the voltage detection result.
Inventors:
Akihito Okumura
Ryosuke Isoya
Kosuke Yamamoto
Ryosuke Isoya
Kosuke Yamamoto
Application Number:
JP2017181685A
Publication Date:
May 13, 2022
Filing Date:
September 21, 2017
Export Citation:
Assignee:
Seiko Instruments Inc.
International Classes:
G04C3/14; H02K37/16; H02P8/02
Domestic Patent References:
| JP1243891A | ||||
| JP10174494A | ||||
| JP201427783A | ||||
| JP2017122707A | ||||
| JP475499A | ||||
| JP2016102780A | ||||
| JP9101380A | ||||
| JP2015222263A | ||||
| JP2017146144A |
Attorney, Agent or Firm:
Noriaki Uchino
Toru Tanikawa
Takuya Shinoda
Toru Tanikawa
Takuya Shinoda
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