CH632378B - Piece d'horlogerie electronique, notamment montre-bracelet electronique. - Google Patents

Piece d'horlogerie electronique, notamment montre-bracelet electronique.

Info

Publication number
CH632378B
CH632378B CH441678A CH441678A CH632378B CH 632378 B CH632378 B CH 632378B CH 441678 A CH441678 A CH 441678A CH 441678 A CH441678 A CH 441678A CH 632378 B CH632378 B CH 632378B
Authority
CH
Switzerland
Prior art keywords
watch
electronic
driving
pulse
motor
Prior art date
Application number
CH441678A
Other languages
English (en)
Other versions
CH632378GA3 (fr
Inventor
Kazuhiro Asano
Makoto Ueda
Akira Torisawa
Masaharu Shida
Katsuhiko Sato
Masaaki Mandai
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 CH632378B publication Critical patent/CH632378B/fr
Application filed by Seiko Instr & Electronics filed Critical Seiko Instr & Electronics
Publication of CH632378GA3 publication Critical patent/CH632378GA3/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)
  • Adornments (AREA)
CH441678A 1977-04-23 1978-04-24 Piece d'horlogerie electronique, notamment montre-bracelet electronique. CH632378B (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4708977A JPS53132381A (en) 1977-04-23 1977-04-23 Electronic watch

Publications (2)

Publication Number Publication Date
CH632378B true CH632378B (fr)
CH632378GA3 CH632378GA3 (fr) 1982-10-15

Family

ID=12765444

Family Applications (1)

Application Number Title Priority Date Filing Date
CH441678A CH632378B (fr) 1977-04-23 1978-04-24 Piece d'horlogerie electronique, notamment montre-bracelet electronique.

Country Status (6)

Country Link
US (1) US4204397A (fr)
JP (1) JPS53132381A (fr)
CH (1) CH632378B (fr)
DE (1) DE2817654A1 (fr)
FR (1) FR2388329A1 (fr)
GB (1) GB1592898A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53132382A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS55501033A (fr) * 1978-11-20 1980-11-27
US4283783A (en) * 1978-11-28 1981-08-11 Citizen Watch Company Limited Drive control system for stepping motor
FR2471077A1 (fr) * 1979-12-06 1981-06-12 Ebauches Sa Asservissement en temps reel avec detection dynamique de rotation pour moteur pas-a-pas
DE3214543A1 (de) * 1981-04-23 1982-11-11 Kabushiki Kaisha Suwa Seikosha, Tokyo Elektronische analoguhr
JP4343549B2 (ja) * 2003-02-24 2009-10-14 セイコーインスツル株式会社 ステップモータ制御装置及び電子時計
JP4236956B2 (ja) * 2003-02-24 2009-03-11 セイコーインスツル株式会社 ステップモータ制御装置及び電子時計
DE10314426B4 (de) * 2003-03-31 2006-09-14 Junghans Uhren Gmbh Verfahren zur Dreherkennung eines wenigstens einen Zeiger einer Uhr antreibenden Schrittmotors
JP2015061467A (ja) * 2013-09-20 2015-03-30 カシオ計算機株式会社 ステッピングモータ及び時計

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319944B2 (fr) * 1971-09-25 1978-06-23
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
US3896363A (en) * 1974-03-18 1975-07-22 Cincinnati Milacron Inc Feedback circuit for detecting the failure of a stepping motor to respond to the control circuit
JPS5210508A (en) * 1975-07-15 1977-01-26 Inoue Japax Res Inc Step motor
JPS5213609A (en) * 1975-07-24 1977-02-02 Seiko Instr & Electronics Ltd Circuit to decide the rotation of the step motor for a clock
US4150536A (en) * 1976-01-28 1979-04-24 Citizen Watch Company Limited Electronic timepiece
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS53114467A (en) * 1977-03-16 1978-10-05 Seiko Instr & Electronics Ltd Electronic watch

Also Published As

Publication number Publication date
DE2817654A1 (de) 1978-10-26
FR2388329A1 (fr) 1978-11-17
FR2388329B1 (fr) 1983-09-30
JPS53132381A (en) 1978-11-18
US4204397A (en) 1980-05-27
CH632378GA3 (fr) 1982-10-15
GB1592898A (en) 1981-07-08
JPS6112554B2 (fr) 1986-04-09

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