Step motor drive device and circuit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11422511
APP PUB NO 20200333749A1
SERIAL NO

16914498

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An electronic watch with a two-coil stepper motor including: a magnetized rotor; a stator including: first and second stator magnetic-pole portions, which are formed so as to oppose to each other through the rotor; and a third stator magnetic-pole portion, which is formed between the first stator magnetic-pole portion and the second stator magnetic-pole portion so as to face the rotor; a coil A to be magnetically coupled to the first stator magnetic-pole portion and the third stator magnetic-pole portion; and a coil B to be magnetically coupled to the second stator magnetic-pole portion and the third stator magnetic-pole portion; and a high-speed drive pulse generation circuit configured to output a drive pulse for driving the rotor to the coil A or the coil B, and wherein the rotor is rotationally driven in increments of 360° due to a drive pulse train formed of the plurality of drive pulses.

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First Claim

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Family

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Patent Owner(s)

Patent OwnerAddress
CITIZEN WATCH CO LTDTOKYO JAPAN TOKYO METROPOLIS

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukushima, Toshiaki Tokorozawa, JP 66 481
Iri, Daisuke Nishitokyo, JP 8 18
Maeda, Toshinari Tokorozawa, JP 26 767
Matsuoh, Daisuke Nishitokyo, JP 13 26
Nishida, Masatoshi Tokyo, JP 9 24
Takyoh, Yu Nishitokyo, JP 7 16

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