HK4678A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
HK4678A
HK4678A HK4678A HK4678A HK4678A HK 4678 A HK4678 A HK 4678A HK 4678 A HK4678 A HK 4678A HK 4678 A HK4678 A HK 4678A HK 4678 A HK4678 A HK 4678A
Authority
HK
Hong Kong
Prior art keywords
electronic timepiece
timepiece
electronic
Prior art date
Application number
HK4678A
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 date
Priority to JP12892372A priority Critical patent/JPS5542356B2/ja
Application filed by Suwa Seikosha Kk filed Critical Suwa Seikosha Kk
Publication of HK4678A publication Critical patent/HK4678A/en

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step
HK4678A 1972-12-22 1978-01-19 Electronic timepiece HK4678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12892372A JPS5542356B2 (en) 1972-12-22 1972-12-22

Publications (1)

Publication Number Publication Date
HK4678A true HK4678A (en) 1978-01-27

Family

ID=14996707

Family Applications (1)

Application Number Title Priority Date Filing Date
HK4678A HK4678A (en) 1972-12-22 1978-01-19 Electronic timepiece

Country Status (5)

Country Link
US (1) US3855781A (en)
JP (1) JPS5542356B2 (en)
GB (1) GB1425840A (en)
HK (1) HK4678A (en)
MY (1) MY7800077A (en)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1451359A (en) * 1973-11-30 1976-09-29 Citizen Watch Co Ltd Pulse motor driven circuit
JPS5010433A (en) * 1973-06-04 1975-02-03
JPS50120373A (en) * 1974-03-05 1975-09-20
JPS604666B2 (en) * 1974-04-04 1985-02-05 Suwa Seikosha Kk
JPS5199077A (en) * 1975-02-26 1976-09-01 Seiko Instr & Electronics DENSHIDOKEINIOKERUKUDOSOCHI
JPS51123186A (en) * 1975-04-18 1976-10-27 Seiko Instr & Electronics Ltd Electronic watch
JPS525566A (en) * 1975-07-02 1977-01-17 Citizen Watch Co Ltd Electric clock
JPS5243006U (en) * 1975-09-23 1977-03-26
JPS5292560A (en) * 1976-01-29 1977-08-04 Seiko Instr & Electronics Ltd Switch box drive pulse width control circuit for electronic clocks
JPS5312669A (en) * 1976-07-21 1978-02-04 Seiko Instr & Electronics Ltd Hands reversing device of electronic watch
JPS6217198B2 (en) * 1976-10-06 1987-04-16 Seikoo Epuson Kk
JPS6126034B2 (en) * 1977-01-19 1986-06-18 Suwa Seikosha Kk
JPS6318148B2 (en) * 1977-03-16 1988-04-16 Seiko Denshi Kogyo Kk
JPS6115380B2 (en) * 1977-04-23 1986-04-23 Seiko Denshi Kogyo Kk
JPS629877B2 (en) * 1977-04-23 1987-03-03 Seiko Denshi Kogyo Kk
JPS6137588B2 (en) * 1977-04-23 1986-08-25 Seiko Denshi Kogyo Kk
JPS6115382B2 (en) * 1977-04-23 1986-04-23 Seiko Denshi Kogyo Kk
JPS6120820B2 (en) * 1977-04-23 1986-05-23 Seiko Denshi Kogyo Kk
JPS6115381B2 (en) * 1977-04-23 1986-04-23 Seiko Denshi Kogyo Kk
JPS629876B2 (en) * 1977-04-23 1987-03-03 Seiko Denshi Kogyo Kk
GB2006995B (en) * 1977-09-26 1982-11-17 Citizen Watch Co Ltd Drive system for pulse motor
JPS6115387B2 (en) * 1977-12-02 1986-04-23 Seiko Denshi Kogyo Kk
JPS613439B2 (en) * 1977-12-14 1986-02-01 Citizen Watch Co Ltd
JPS54133382A (en) * 1978-04-07 1979-10-17 Seiko Epson Corp Crystal wristwatch
CH616045A (en) * 1978-06-20 1980-03-14
US4221111A (en) * 1978-08-15 1980-09-09 Citizen Watch Company Limited Electronic timepiece having a voltage conversion circuit
JPS5921493B2 (en) * 1978-09-12 1984-05-21 Seikoo Denshi Kogyo Kk
CH629356A (en) * 1979-06-28 1982-04-30
DE2937838C2 (en) * 1979-09-19 1986-08-28 Braun Ag, 6000 Frankfurt, De
FR2469037B1 (en) * 1979-10-31 1983-08-12 Sonceboz Sa
GB2079493B (en) * 1980-01-30 1983-09-07 Portescap Electric motor control device
CH640999A (en) * 1980-08-25 1984-02-15
JPS6123487B2 (en) * 1980-11-05 1986-06-06 Citizen Watch Co Ltd
CH647383A (en) * 1981-02-04 1985-01-31
JPH0228477Y2 (en) * 1981-07-06 1990-07-31
JPS61135288U (en) * 1985-02-13 1986-08-23
JPH0379469U (en) * 1989-12-05 1991-08-13
US6088302A (en) 1997-04-25 2000-07-11 Seiko Instruments Inc. Electronic timepiece
CN1132079C (en) * 1997-04-25 2003-12-24 精工电子有限公司 Electronic timepiece
US6262554B1 (en) * 1998-09-22 2001-07-17 Seiko Epson Corporation Electronic device and method of controlling the same
DE102012105362A1 (en) * 2012-06-20 2013-12-24 Trinamic Motion Control Gmbh & Co. Kg Method and circuit arrangement for controlling a stepper motor
JP2019128320A (en) * 2018-01-26 2019-08-01 セイコーインスツル株式会社 Movement and timepiece

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH490710A (en) * 1966-02-10 1969-08-15 Suisse Horlogerie Electronic timepiece
GB1205753A (en) * 1966-09-09 1970-09-16 Smiths Industries Ltd Horological instruments incorporating electrical oscillation generators
JPS5319944B2 (en) * 1971-09-25 1978-06-23

Also Published As

Publication number Publication date
JPS4985514A (en) 1974-08-16
US3855781A (en) 1974-12-24
MY7800077A (en) 1978-12-31
JPS5542356B2 (en) 1980-10-30
GB1425840A (en) 1976-02-18

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