JPS5612577A - Electronic clock - Google Patents

Electronic clock

Info

Publication number
JPS5612577A
JPS5612577A JP8900879A JP8900879A JPS5612577A JP S5612577 A JPS5612577 A JP S5612577A JP 8900879 A JP8900879 A JP 8900879A JP 8900879 A JP8900879 A JP 8900879A JP S5612577 A JPS5612577 A JP S5612577A
Authority
JP
Japan
Prior art keywords
step motor
voltage
output
coil
gate
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.)
Pending
Application number
JP8900879A
Other languages
English (en)
Japanese (ja)
Inventor
Masaharu Shida
Jun Ueda
Shuji Otawa
Masaaki Bandai
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 JP8900879A priority Critical patent/JPS5612577A/ja
Priority to FR8014725A priority patent/FR2461400A1/fr
Priority to US06/168,321 priority patent/US4437769A/en
Priority to GB8022791A priority patent/GB2054916B/en
Priority to DE19803026321 priority patent/DE3026321A1/de
Priority to CH538880A priority patent/CH646574GA3/fr
Publication of JPS5612577A publication Critical patent/JPS5612577A/ja
Priority to SG216/84A priority patent/SG21684G/en
Priority to HK646/86A priority patent/HK64686A/xx
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/04—Arrangements of electric power supplies in time pieces with means for indicating the condition of the power supply
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/02—Arrangements of electric power supplies in time pieces the power supply being a radioactive or photovoltaic source
    • 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)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
  • Electric Clocks (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
JP8900879A 1979-07-13 1979-07-13 Electronic clock Pending JPS5612577A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP8900879A JPS5612577A (en) 1979-07-13 1979-07-13 Electronic clock
FR8014725A FR2461400A1 (fr) 1979-07-13 1980-07-02 Circuit d'alimentation d'un moteur pas a pas pour montre electronique
US06/168,321 US4437769A (en) 1979-07-13 1980-07-10 Electronic timepiece
GB8022791A GB2054916B (en) 1979-07-13 1980-07-11 Electronic timepiece
DE19803026321 DE3026321A1 (de) 1979-07-13 1980-07-11 Elektronische uhr
CH538880A CH646574GA3 (enExample) 1979-07-13 1980-07-14
SG216/84A SG21684G (en) 1979-07-13 1984-03-09 Electronic timepiece
HK646/86A HK64686A (en) 1979-07-13 1986-08-28 Electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8900879A JPS5612577A (en) 1979-07-13 1979-07-13 Electronic clock

Publications (1)

Publication Number Publication Date
JPS5612577A true JPS5612577A (en) 1981-02-06

Family

ID=13958820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8900879A Pending JPS5612577A (en) 1979-07-13 1979-07-13 Electronic clock

Country Status (8)

Country Link
US (1) US4437769A (enExample)
JP (1) JPS5612577A (enExample)
CH (1) CH646574GA3 (enExample)
DE (1) DE3026321A1 (enExample)
FR (1) FR2461400A1 (enExample)
GB (1) GB2054916B (enExample)
HK (1) HK64686A (enExample)
SG (1) SG21684G (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5866090A (ja) * 1981-10-15 1983-04-20 Seikosha Co Ltd 電子時計
JPS6189625A (ja) * 1984-10-09 1986-05-07 Canon Inc 堆積膜形成法
JPS6190423A (ja) * 1984-10-10 1986-05-08 Canon Inc 堆積膜形成法
JPS61164184A (ja) * 1985-01-17 1986-07-24 Seiko Instr & Electronics Ltd 電子メトロノ−ム
JPS61165965U (enExample) * 1985-04-05 1986-10-15

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5643575A (en) * 1979-09-18 1981-04-22 Seiko Instr & Electronics Ltd Electronic clock
CH632383B (fr) * 1980-04-16 Ebauchesfabrik Eta Ag Piece d'horlogerie electronique.
CH647383GA3 (enExample) * 1981-02-04 1985-01-31
JPS5980147A (ja) * 1982-10-29 1984-05-09 Rhythm Watch Co Ltd 時計用小型モ−タ
CA1239439A (en) * 1984-03-19 1988-07-19 William E. Schmitz Multiple phase stepper motor torque control apparatus and method
CH671135GA3 (en) * 1987-12-11 1989-08-15 Control method for stepper motor - using magnetic field detector allowing compensation for ambient magnetic field by adjusting drive pulses
EP0764894B1 (en) * 1995-09-20 2002-05-29 Citizen Watch Co., Ltd. Electronic watch
JP2946091B2 (ja) 1998-02-18 1999-09-06 セイコーインスツルメンツ株式会社 スイッチング・レギュレーター
JP3678075B2 (ja) * 1998-12-09 2005-08-03 セイコーエプソン株式会社 電源装置およびその制御方法、携帯型電子機器、計時装置およびその制御方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150536A (en) 1976-01-28 1979-04-24 Citizen Watch Company Limited Electronic timepiece
US4129981A (en) 1976-02-06 1978-12-19 Citizen Watch Company Limited Electronic timepiece
JPS5345575A (en) 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
US4107595A (en) 1977-01-24 1978-08-15 Teletype Corporation Current control system for a stepping motor
JPS53132384A (en) 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
US4140955A (en) 1977-05-12 1979-02-20 Fluke Trendar Corporation Stepping motor drive method and apparatus
GB2006995B (en) 1977-09-26 1982-11-17 Citizen Watch Co Ltd Drive system for pulse motor
DE2749141A1 (de) 1977-11-03 1979-05-10 Quarz Zeit Ag Elektrische uhr
CH616044B (de) 1977-12-16 Bulova Watch Co Inc Elektronische kleinuhr.
US4230970A (en) 1978-03-07 1980-10-28 Lear Siegler, Inc. Method and apparatus for saving energy
CH616045B (fr) 1978-06-20 Ebauches Sa Procede pour reduire la consommation d'une piece d'horlogerie electronique et piece d'horlogerie electronique mettant en oeuvre ce procede.
US4295083A (en) 1979-07-02 1981-10-13 The Superior Electric Company Pulsed energy stepping motor power control unit
US4326161A (en) 1979-10-17 1982-04-20 Protection Services, Inc. Battery regulation circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5866090A (ja) * 1981-10-15 1983-04-20 Seikosha Co Ltd 電子時計
JPS6189625A (ja) * 1984-10-09 1986-05-07 Canon Inc 堆積膜形成法
JPS6190423A (ja) * 1984-10-10 1986-05-08 Canon Inc 堆積膜形成法
JPS61164184A (ja) * 1985-01-17 1986-07-24 Seiko Instr & Electronics Ltd 電子メトロノ−ム
JPS61165965U (enExample) * 1985-04-05 1986-10-15

Also Published As

Publication number Publication date
GB2054916B (en) 1983-03-16
DE3026321A1 (de) 1981-01-29
US4437769A (en) 1984-03-20
SG21684G (en) 1990-07-06
FR2461400B1 (enExample) 1984-11-30
FR2461400A1 (fr) 1981-01-30
CH646574GA3 (enExample) 1984-12-14
HK64686A (en) 1986-09-05
GB2054916A (en) 1981-02-18

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