Title:
指針装置、電子時計、指針装置の制御方法、及びプログラム
Document Type and Number:
Japanese Patent JP7063314
Kind Code:
B2
Abstract:
An electronic watch includes a pointer; a stepping motor including a coil and configured to drive the pointer; a driving circuit configured to drive the stepping motor; an A/D converter configured to detect electromotive force generated in the coil due to an impact; and a CPU configured to control driving of the driving circuit. The CPU determines a direction in which the pointer is likely to be shifted, based on the electromotive force detected by the A/D converter, determines whether the pointer is shifted due to the impact, and upon determining that the pointer is shifted, corrects a position of the pointer in accordance with the direction in which the pointer is likely to be shifted.
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Inventors:
Yuta Saito
Youguchi Kawaguchi
Ochiai Fumiaki
Youguchi Kawaguchi
Ochiai Fumiaki
Application Number:
JP2019209405A
Publication Date:
May 09, 2022
Filing Date:
November 20, 2019
Export Citation:
Assignee:
CASIO COMPUTER CO.,LTD.
International Classes:
H02P8/38; G04C3/14
Domestic Patent References:
| JP56110073A | ||||
| JP54021873A | ||||
| JP2009156787A | ||||
| JP2017173037A |
Attorney, Agent or Firm:
Isono International Patent and Trademark Office