CH635973B - Circuit de commande pour un transducteur electromecanique d'une montre, notamment d'une montre-bracelet electronique. - Google Patents

Circuit de commande pour un transducteur electromecanique d'une montre, notamment d'une montre-bracelet electronique.

Info

Publication number
CH635973B
CH635973B CH53178A CH53178A CH635973B CH 635973 B CH635973 B CH 635973B CH 53178 A CH53178 A CH 53178A CH 53178 A CH53178 A CH 53178A CH 635973 B CH635973 B CH 635973B
Authority
CH
Switzerland
Prior art keywords
load detection
step motor
watch
driving
load
Prior art date
Application number
CH53178A
Other languages
English (en)
French (fr)
Other versions
CH635973GA3 (en:Method
Inventor
Minoru Hosokawa
Hiroshi Ishii
Yoshikazu Kawamura
Sakiho Okazaki
Original Assignee
Suwa Seikosha Kk
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 CH635973B publication Critical patent/CH635973B/fr
Priority claimed from JP472877A external-priority patent/JPS5389776A/ja
Priority claimed from JP846577A external-priority patent/JPS5394981A/ja
Application filed by Suwa Seikosha Kk filed Critical Suwa Seikosha Kk
Publication of CH635973GA3 publication Critical patent/CH635973GA3/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)
  • Electromechanical Clocks (AREA)
  • Telephone Function (AREA)
  • Control Of Stepping Motors (AREA)
CH53178A 1977-01-19 1978-01-18 Circuit de commande pour un transducteur electromecanique d'une montre, notamment d'une montre-bracelet electronique. CH635973B (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP472877A JPS5389776A (en) 1977-01-19 1977-01-19 Electronic wristwatch
JP846577A JPS5394981A (en) 1977-01-28 1977-01-28 Electronic wristwatch

Publications (2)

Publication Number Publication Date
CH635973B true CH635973B (fr)
CH635973GA3 CH635973GA3 (en:Method) 1983-05-13

Family

ID=26338546

Family Applications (1)

Application Number Title Priority Date Filing Date
CH53178A CH635973B (fr) 1977-01-19 1978-01-18 Circuit de commande pour un transducteur electromecanique d'une montre, notamment d'une montre-bracelet electronique.

Country Status (2)

Country Link
US (1) US4192131A (en:Method)
CH (1) CH635973B (en:Method)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321521A (en) * 1978-12-25 1982-03-23 Kabushiki Kaisha Daini Seikosha Detection device of electronic timepiece
US4351039A (en) * 1979-01-08 1982-09-21 Jean-Claude Berney Timepiece with a detector and control circuit for a stepping motor
US4282472A (en) * 1979-05-14 1981-08-04 Qwint Systems, Inc. Digital generation and control of variable phase-on motor energization
FR2464478A1 (fr) * 1979-09-04 1981-03-06 Suisse Horlogerie Detecteur d'avance d'un moteur pas a pas
DE2944872C2 (de) * 1979-11-07 1981-11-19 Gebrüder Junghans GmbH, 7230 Schramberg Anordnung zur Steuerung eines Schrittmotors für batteriebetriebene Geräte
JPS56110073A (en) * 1980-02-05 1981-09-01 Citizen Watch Co Ltd Electronic watch
US4329635A (en) * 1980-09-03 1982-05-11 Gould Inc. Stepper motor damping circuit
CH644989GA3 (en:Method) * 1981-03-18 1984-09-14
CH646575GA3 (en:Method) * 1981-10-02 1984-12-14
US4506206A (en) * 1982-01-21 1985-03-19 U.S. Philips Corporation Method of and circuit arrangement for controlling the torque of a stepping motor
NL8203094A (nl) * 1982-08-04 1984-03-01 Philips Nv Werkwijze voor het analyseren van de in een bekrachtigingsspoel van een stappenmotor geinduceerde spanning.
US4888541A (en) * 1987-10-23 1989-12-19 Jack Russell Method and apparatus for controlling stepmotor mechanical drives
US4851755A (en) * 1988-03-01 1989-07-25 Ampex Corporation Low power stepper motor drive system and method
EP0764894B1 (en) * 1995-09-20 2002-05-29 Citizen Watch Co., Ltd. Electronic watch
JP2010220408A (ja) * 2009-03-17 2010-09-30 Seiko Instruments Inc ステッピングモータ制御回路及びアナログ電子時計

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1343330A (en) * 1970-07-27 1974-01-10 Suwa Seikosha Kk Electric timepieces
JPS5319944B2 (en:Method) * 1971-09-25 1978-06-23
CH1169075A4 (en:Method) * 1975-09-09 1977-04-15
US4032827A (en) * 1976-03-15 1977-06-28 Timex Corporation Driver circuit arrangement for a stepping motor
US4158287A (en) * 1976-08-12 1979-06-19 Citizen Watch Company Limited Driver circuit for electro-mechanical transducer

Also Published As

Publication number Publication date
US4192131A (en) 1980-03-11
CH635973GA3 (en:Method) 1983-05-13

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