JPS5319944B2 - - Google Patents

Info

Publication number
JPS5319944B2
JPS5319944B2 JP7475971A JP7475971A JPS5319944B2 JP S5319944 B2 JPS5319944 B2 JP S5319944B2 JP 7475971 A JP7475971 A JP 7475971A JP 7475971 A JP7475971 A JP 7475971A JP S5319944 B2 JPS5319944 B2 JP S5319944B2
Authority
JP
Japan
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.)
Expired
Application number
JP7475971A
Other languages
Japanese (ja)
Other versions
JPS4841772A (en]
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 filed Critical
Priority to JP7475971A priority Critical patent/JPS5319944B2/ja
Priority to GB4426372A priority patent/GB1355892A/en
Priority to DE2247210A priority patent/DE2247210C2/de
Priority to US00291531A priority patent/US3812670A/en
Publication of JPS4841772A publication Critical patent/JPS4841772A/ja
Publication of JPS5319944B2 publication Critical patent/JPS5319944B2/ja
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)
JP7475971A 1971-09-25 1971-09-25 Expired JPS5319944B2 (en])

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP7475971A JPS5319944B2 (en]) 1971-09-25 1971-09-25
GB4426372A GB1355892A (en) 1971-09-25 1972-09-25 Drive circuit for an electronic timepiece
DE2247210A DE2247210C2 (de) 1971-09-25 1972-09-25 Elektronisches Uhrwerk
US00291531A US3812670A (en) 1971-09-25 1972-09-25 Converter drive circuit in an electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7475971A JPS5319944B2 (en]) 1971-09-25 1971-09-25

Publications (2)

Publication Number Publication Date
JPS4841772A JPS4841772A (en]) 1973-06-18
JPS5319944B2 true JPS5319944B2 (en]) 1978-06-23

Family

ID=13556511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7475971A Expired JPS5319944B2 (en]) 1971-09-25 1971-09-25

Country Status (4)

Country Link
US (1) US3812670A (en])
JP (1) JPS5319944B2 (en])
DE (1) DE2247210C2 (en])
GB (1) GB1355892A (en])

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542356B2 (en]) * 1972-12-22 1980-10-30
CH581346B5 (en]) * 1973-07-19 1976-10-29 Ebauches Sa
JPS5031864A (en]) * 1973-07-20 1975-03-28
ES430659A1 (es) * 1973-10-24 1976-11-01 Jauch Un procedimiento y un dispositivo para la sincronizacion deun sistema oscilante accionado por un acumulador mecanico deenergia, en especial de un reloj.
JPS587190B2 (ja) * 1973-12-05 1983-02-08 セイコーエプソン株式会社 スイシヨウドケイ
GB1488914A (en) * 1973-12-19 1977-10-19 Citizen Watch Co Ltd Electronic timepiece
US4162608A (en) * 1974-06-05 1979-07-31 Kabushiki Kaisha Suwa Seikosha Electronic timepiece frequency regulating circuit
JPS5181165A (en]) * 1975-01-13 1976-07-15 Suwa Seikosha Kk
JPS5292560A (en) * 1976-01-29 1977-08-04 Seiko Instr & Electronics Ltd Switch box drive pulse width control circuit for electronic clocks
JPS5915533B2 (ja) * 1976-08-20 1984-04-10 シチズン時計株式会社 電子装置の駆動回路
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
US4104860A (en) * 1976-12-27 1978-08-08 Solid State Scientific Inc. High speed dynamic flip-flop system
CH635973B (fr) * 1977-01-19 Suwa Seikosha Kk Circuit de commande pour un transducteur electromecanique d'une montre, notamment d'une montre-bracelet electronique.
US4219999A (en) * 1977-03-03 1980-09-02 Citizen Watch Company, Limited Electronic timepiece equipped with battery life display
JPS53114467A (en) * 1977-03-16 1978-10-05 Seiko Instr & Electronics Ltd Electronic watch
JPS53132381A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132386A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS5428176A (en) * 1977-08-04 1979-03-02 Seiko Instr & Electronics Ltd Electronic watch
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch
JPS54156676A (en) * 1978-05-31 1979-12-10 Seiko Epson Corp Wristwatch
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.
US4283783A (en) * 1978-11-28 1981-08-11 Citizen Watch Company Limited Drive control system for stepping motor
CH647383GA3 (en]) * 1981-02-04 1985-01-31
JPS5860292U (ja) * 1982-07-22 1983-04-23 セイコーエプソン株式会社 アラ−ム付電子時計
JPS63217288A (ja) * 1987-03-06 1988-09-09 Seikosha Co Ltd 電磁駆動回路
JPS6333196U (en]) * 1987-04-10 1988-03-03
JPH02222859A (ja) * 1990-01-11 1990-09-05 Seiko Epson Corp アラーム付電子機器
DE69413668T2 (de) * 1993-01-18 1999-04-15 Seiko Instruments Inc., Tokio/Tokyo Zeitgeber

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370414A (en) * 1965-06-22 1968-02-27 Benrus Watch Company Inc Electronic timepiece
JPS4943989B1 (en]) * 1968-07-19 1974-11-26
DE1809223B2 (de) * 1968-11-15 1972-11-30 Gebrüder Junghans GmbH, 7230 Schramberg Armbanduhr mit einem piezoelektrischen kristall als zeithaltendem schwinger
FR2060185B2 (en]) * 1969-09-10 1974-03-15 Lavet Marius
GB1279058A (en) * 1970-01-28 1972-06-21 Seiko Instr & Electronics Timepiece
US3699762A (en) * 1971-04-05 1972-10-24 Timex Corp Synchronized contact watch

Also Published As

Publication number Publication date
DE2247210A1 (de) 1973-03-29
GB1355892A (en) 1974-06-05
DE2247210C2 (de) 1983-01-20
US3812670A (en) 1974-05-28
JPS4841772A (en]) 1973-06-18

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