JPS5515054A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5515054A
JPS5515054A JP8805478A JP8805478A JPS5515054A JP S5515054 A JPS5515054 A JP S5515054A JP 8805478 A JP8805478 A JP 8805478A JP 8805478 A JP8805478 A JP 8805478A JP S5515054 A JPS5515054 A JP S5515054A
Authority
JP
Japan
Prior art keywords
magnetic field
pulse width
step motor
driving
external magnetic
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP8805478A
Other languages
English (en)
Other versions
JPS6156792B2 (ja
Inventor
Jun Ueda
Akira Torisawa
Shuji Otawa
Masaaki Bandai
Masaharu Shida
Katsuhiko Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 date
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP8805478A priority Critical patent/JPS5515054A/ja
Priority to US06/049,974 priority patent/US4321520A/en
Priority to FR7917631A priority patent/FR2431722A1/fr
Priority to GB7924963A priority patent/GB2026216B/en
Priority to CH673879A priority patent/CH640385B/fr
Priority to DE2929323A priority patent/DE2929323C2/de
Publication of JPS5515054A publication Critical patent/JPS5515054A/ja
Priority to SG646/83A priority patent/SG64683G/en
Priority to HK188/84A priority patent/HK18884A/xx
Publication of JPS6156792B2 publication Critical patent/JPS6156792B2/ja
Granted legal-status Critical Current

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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
    • H02P8/02—Arrangements for controlling dynamo-electric motors rotating step by step specially adapted for single-phase or bi-pole stepper motors, e.g. watch-motors, clock-motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
  • Electric Clocks (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Adornments (AREA)
JP8805478A 1978-07-19 1978-07-19 Electronic watch Granted JPS5515054A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP8805478A JPS5515054A (en) 1978-07-19 1978-07-19 Electronic watch
US06/049,974 US4321520A (en) 1978-07-19 1979-06-19 Electronic timepiece
FR7917631A FR2431722A1 (fr) 1978-07-19 1979-07-06 Montre electronique comportant un dispositif de detection d'un champ magnetique externe
GB7924963A GB2026216B (en) 1978-07-19 1979-07-18 Electronic timepiece
CH673879A CH640385B (fr) 1978-07-19 1979-07-19 Piece d'horlogerie electronique, notamment montre-bracelet electronique.
DE2929323A DE2929323C2 (de) 1978-07-19 1979-07-19 Elektronische Uhr
SG646/83A SG64683G (en) 1978-07-19 1983-11-01 Electronic timepiece
HK188/84A HK18884A (en) 1978-07-19 1984-03-01 Electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8805478A JPS5515054A (en) 1978-07-19 1978-07-19 Electronic watch

Publications (2)

Publication Number Publication Date
JPS5515054A true JPS5515054A (en) 1980-02-01
JPS6156792B2 JPS6156792B2 (ja) 1986-12-04

Family

ID=13932113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8805478A Granted JPS5515054A (en) 1978-07-19 1978-07-19 Electronic watch

Country Status (8)

Country Link
US (1) US4321520A (ja)
JP (1) JPS5515054A (ja)
CH (1) CH640385B (ja)
DE (1) DE2929323C2 (ja)
FR (1) FR2431722A1 (ja)
GB (1) GB2026216B (ja)
HK (1) HK18884A (ja)
SG (1) SG64683G (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62238484A (ja) * 1986-04-10 1987-10-19 Seiko Instr & Electronics Ltd 電子時計

Families Citing this family (17)

* 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
JPS55147381A (en) * 1979-05-04 1980-11-17 Seiko Instr & Electronics Ltd Detector for electronic watch
CH641921B (fr) * 1980-02-19 Berney Sa Jean Claude Piece d'horlogerie avec un dispositif de controle du moteur pas a pas.
JPS56158978A (en) * 1980-05-13 1981-12-08 Citizen Watch Co Ltd Electronic watch
GB2134290B (en) * 1982-12-16 1986-02-26 Suwa Seikosha Kk An analog electronic timepiece
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
EP0377064B1 (en) * 1989-01-05 1994-03-30 International Business Machines Corporation Method of operating a timer
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
EP0982846B1 (fr) * 1998-08-25 2011-10-19 ETA SA Manufacture Horlogère Suisse Procédé et dispositif de commande d'un moteur pas à pas
US6327225B1 (en) * 1998-12-14 2001-12-04 Seiko Epson Corporation Electronic unit, and control method for electronic unit
CH694621A5 (fr) * 2001-07-02 2005-04-29 Richemont Int Sa Procédé de régulation et module électronique de régulation pour mouvement d'horlogerie à remontage mécanique.
JP2006226927A (ja) * 2005-02-21 2006-08-31 Seiko Instruments Inc ステップモータ駆動装置及びアナログ電子時計
JP4730127B2 (ja) * 2006-02-22 2011-07-20 日産自動車株式会社 車両用ブレーキ装置
JP2011027510A (ja) * 2009-07-23 2011-02-10 Seiko Instruments Inc クロノグラフ時計
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
DE102018107425B4 (de) * 2018-03-28 2022-12-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Stimulieren einer Gewebestruktur mittels einer elektrischen Feldstärke, System zum Stimulieren einer Gewebestruktur und Magnetstruktur zum Implantieren an eine Gewebestruktur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321966A (en) * 1976-08-12 1978-02-28 Citizen Watch Co Ltd Electric-mechanical converter driving circuit for timepiece
JPS5371214A (en) * 1976-12-07 1978-06-24 Seiko Instr & Electronics Ltd Anti-magnetic mechanism of step motor
JPS5372112A (en) * 1976-12-08 1978-06-27 Seiko Instr & Electronics Ltd Drive circuit for step motor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756010A (en) * 1970-08-11 1973-09-04 Matsushita Electric Works Ltd Magnetic-induction clock
US4158287A (en) * 1976-08-12 1979-06-19 Citizen Watch Company Limited Driver circuit for electro-mechanical transducer
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS54155079A (en) * 1978-05-26 1979-12-06 Seiko Instr & Electronics Ltd Magnetic field detector for electronic watch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321966A (en) * 1976-08-12 1978-02-28 Citizen Watch Co Ltd Electric-mechanical converter driving circuit for timepiece
JPS5371214A (en) * 1976-12-07 1978-06-24 Seiko Instr & Electronics Ltd Anti-magnetic mechanism of step motor
JPS5372112A (en) * 1976-12-08 1978-06-27 Seiko Instr & Electronics Ltd Drive circuit for step motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62238484A (ja) * 1986-04-10 1987-10-19 Seiko Instr & Electronics Ltd 電子時計

Also Published As

Publication number Publication date
GB2026216A (en) 1980-01-30
FR2431722A1 (fr) 1980-02-15
CH640385B (fr)
DE2929323C2 (de) 1984-12-13
JPS6156792B2 (ja) 1986-12-04
US4321520A (en) 1982-03-23
DE2929323A1 (de) 1980-02-07
HK18884A (en) 1984-03-09
CH640385GA3 (ja) 1984-01-13
FR2431722B1 (ja) 1984-09-28
SG64683G (en) 1985-03-29
GB2026216B (en) 1983-02-16

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