Title:
電子時計、ムーブメントおよび時計用モーター制御回路
Document Type and Number:
Japanese Patent JP7206975
Kind Code:
B2
Abstract:
An electronic timepiece enables driving a motor in a reverse direction. The timepiece has a current detector detecting a current value flowing through a coil; a driver controller that outputs, according to the detected current value, a first drive signal turning the rotor in a forward direction to a position not pulled to a second statically stable position from a position where the rotor is pulled to a first statically stable position, outputs a second drive signal turning the rotor in a reverse direction past the dynamically stable position after outputting the first drive signal, and outputs a third drive signal turning the rotor in the reverse direction after outputting the second drive signal; and a driver that is controlled according to the first, second and third drive signals to an on state supplying drive current to the coil and an off state not supplying drive current to the coil.
Inventors:
Yuki Okuhata
Application Number:
JP2019018635A
Publication Date:
January 18, 2023
Filing Date:
February 05, 2019
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G04C3/14; H02P8/02
Domestic Patent References:
| JP5946575A | ||||
| JP5486723A | ||||
| JP201644982A | ||||
| JP5716376A |
Attorney, Agent or Firm:
Intellectual Property Office
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