CH639816B - Dispositif de detection pour une piece d'horlogerie electronique, notamment une montre-bracelet electronique. - Google Patents

Dispositif de detection pour une piece d'horlogerie electronique, notamment une montre-bracelet electronique.

Info

Publication number
CH639816B
CH639816B CH349380A CH349380A CH639816B CH 639816 B CH639816 B CH 639816B CH 349380 A CH349380 A CH 349380A CH 349380 A CH349380 A CH 349380A CH 639816 B CH639816 B CH 639816B
Authority
CH
Switzerland
Prior art keywords
coil
rotor
electronic
low impedance
detection device
Prior art date
Application number
CH349380A
Other languages
English (en)
Other versions
CH639816GA3 (fr
Inventor
Makoto Ueda
Akira Torisawa
Shuji Otawa
Masaaki Mandai
Masaharu Shida
Katsuhiko Sato
Original Assignee
Seiko Instr & Electronics
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication of CH639816B publication Critical patent/CH639816B/fr
Application filed by Seiko Instr & Electronics filed Critical Seiko Instr & Electronics
Publication of CH639816GA3 publication Critical patent/CH639816GA3/fr

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/028—Electrodynamic magnetometers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
  • Electric Clocks (AREA)
CH349380A 1979-05-04 1980-05-05 Dispositif de detection pour une piece d'horlogerie electronique, notamment une montre-bracelet electronique. CH639816B (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5486279A JPS55147381A (en) 1979-05-04 1979-05-04 Detector for electronic watch

Publications (2)

Publication Number Publication Date
CH639816B true CH639816B (fr)
CH639816GA3 CH639816GA3 (fr) 1983-12-15

Family

ID=12982391

Family Applications (1)

Application Number Title Priority Date Filing Date
CH349380A CH639816B (fr) 1979-05-04 1980-05-05 Dispositif de detection pour une piece d'horlogerie electronique, notamment une montre-bracelet electronique.

Country Status (6)

Country Link
US (1) US4352172A (fr)
JP (1) JPS55147381A (fr)
CH (1) CH639816B (fr)
DE (1) DE3016762C2 (fr)
FR (1) FR2455763A1 (fr)
GB (1) GB2050655B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH646301GA3 (fr) * 1981-12-23 1984-11-30
GB2134290B (en) * 1982-12-16 1986-02-26 Suwa Seikosha Kk An analog electronic timepiece
CH654169GA3 (fr) * 1984-04-25 1986-02-14
JPH0681551B2 (ja) * 1984-10-16 1994-10-12 セイコ−電子工業株式会社 ステップモ−タの回転検出方法
JPS6258189A (ja) * 1985-09-09 1987-03-13 Seiko Instr & Electronics Ltd アナログ電子時計
JPS6378090A (ja) * 1986-09-17 1988-04-08 ア−ル・アウデマルズ　ソシエテ　アノニム 電子式識別装置
JP3541601B2 (ja) * 1997-02-07 2004-07-14 セイコーエプソン株式会社 ステッピングモーターの制御装置、その制御方法および計時装置
JPH11127595A (ja) * 1997-08-11 1999-05-11 Seiko Epson Corp 電子機器
CN102353842B (zh) * 2011-07-07 2015-07-01 索肯和平(上海)电气有限公司 一种异步电机定子电阻的测量方法
JP7205337B2 (ja) * 2019-03-25 2023-01-17 セイコーエプソン株式会社 電子時計、ムーブメントおよびモーター制御装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024680B2 (ja) * 1973-03-07 1985-06-14 セイコーインスツルメンツ株式会社 時計用ステツプモ−タの駆動回路
JPS5312669A (en) * 1976-07-21 1978-02-04 Seiko Instr & Electronics Ltd Hands reversing device of electronic watch
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS53136870A (en) * 1977-04-23 1978-11-29 Seiko Instr & Electronics Ltd Electronic watch
JPS54155079A (en) * 1978-05-26 1979-12-06 Seiko Instr & Electronics Ltd Magnetic field detector for electronic watch
JPS5515054A (en) * 1978-07-19 1980-02-01 Seiko Instr & Electronics Ltd Electronic watch

Also Published As

Publication number Publication date
JPS6128313B2 (fr) 1986-06-30
US4352172A (en) 1982-09-28
GB2050655B (en) 1983-04-20
FR2455763B1 (fr) 1984-09-28
FR2455763A1 (fr) 1980-11-28
GB2050655A (en) 1981-01-07
DE3016762C2 (de) 1989-10-12
DE3016762A1 (de) 1980-11-13
JPS55147381A (en) 1980-11-17
CH639816GA3 (fr) 1983-12-15

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