GB2073917B - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
GB2073917B
GB2073917B GB8111839A GB8111839A GB2073917B GB 2073917 B GB2073917 B GB 2073917B GB 8111839 A GB8111839 A GB 8111839A GB 8111839 A GB8111839 A GB 8111839A GB 2073917 B GB2073917 B GB 2073917B
Authority
GB
United Kingdom
Prior art keywords
pulses
circuit
motor control
electronic timepiece
control circuit
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.)
Expired
Application number
GB8111839A
Other versions
GB2073917A (en
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.)
ETA SA Manufacture Horlogere Suisse
Ebauchesfabrik ETA AG
Original Assignee
Ebauchesfabrik ETA AG
Eta SA Fabriques dEbauches
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 Ebauchesfabrik ETA AG, Eta SA Fabriques dEbauches filed Critical Ebauchesfabrik ETA AG
Publication of GB2073917A publication Critical patent/GB2073917A/en
Application granted granted Critical
Publication of GB2073917B publication Critical patent/GB2073917B/en
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

Landscapes

  • 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)

Abstract

An electronic timepiece suitable for use with different types of batteries having different voltages, and including a stepping motor 6, an oscillator 1, a frequency divider 2 and a motor control circuit 5, comprises a battery voltage detector 8 and a pulse shaper circuit 9 capable of producing pulses of different durations. The voltage detector circuit 8 controls the pulse shaper circuit 9 to cause it to supply the motor control circuit with pulses whose duration depends upon the detected battery voltage, whereby the drive pulse power will be substantially the same irrespective of the type and voltage of the battery fitted. In another embodiment trains of short pulses are used instead of single pulses and the duty cycle of the short pulses is varied. <IMAGE>
GB8111839A 1980-04-16 1981-04-14 Electronic timepiece Expired GB2073917B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH292780A CH632383B (en) 1980-04-16 1980-04-16 ELECTRONIC WATCH PART.

Publications (2)

Publication Number Publication Date
GB2073917A GB2073917A (en) 1981-10-21
GB2073917B true GB2073917B (en) 1983-11-23

Family

ID=4244759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8111839A Expired GB2073917B (en) 1980-04-16 1981-04-14 Electronic timepiece

Country Status (5)

Country Link
JP (1) JPS5848876B2 (en)
CH (1) CH632383B (en)
DE (1) DE3114356A1 (en)
FR (1) FR2480956A1 (en)
GB (1) GB2073917B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH646576GA3 (en) * 1981-10-02 1984-12-14
JPH0347115Y2 (en) * 1984-10-25 1991-10-07
JPS61147181A (en) * 1984-12-20 1986-07-04 Seiko Instr & Electronics Ltd Electronic metronone
JPS61147180A (en) * 1984-12-20 1986-07-04 Seiko Instr & Electronics Ltd Electronic metronone
US7122026B2 (en) 2002-04-22 2006-10-17 Medtronic, Inc. Implantable infusion device with optimized peristaltic pump motor drive

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4830676U (en) * 1971-08-20 1973-04-14
US4129981A (en) * 1976-02-06 1978-12-19 Citizen Watch Company Limited Electronic timepiece
JPS52141268A (en) * 1976-05-19 1977-11-25 Seiko Epson Corp Electronic clock
US4158287A (en) * 1976-08-12 1979-06-19 Citizen Watch Company Limited Driver circuit for electro-mechanical transducer
US4219999A (en) * 1977-03-03 1980-09-02 Citizen Watch Company, Limited Electronic timepiece equipped with battery life display
JPS53132386A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
GB2006995B (en) * 1977-09-26 1982-11-17 Citizen Watch Co Ltd Drive system for pulse motor
JPS5498659A (en) * 1977-12-22 1979-08-03 Citizen Watch Co Ltd Wristwatch with calculator
CH616813B (en) * 1977-12-28 Ebauches Sa ELECTRONIC WATCH PART WITH DETECTION SYSTEM OF END OF BATTERY LIFE.
JPS5612577A (en) * 1979-07-13 1981-02-06 Seiko Instr & Electronics Ltd Electronic clock

Also Published As

Publication number Publication date
CH632383B (en)
GB2073917A (en) 1981-10-21
FR2480956A1 (en) 1981-10-23
DE3114356A1 (en) 1982-06-09
DE3114356C2 (en) 1989-01-19
JPS56159998A (en) 1981-12-09
CH632383GA3 (en) 1982-10-15
FR2480956B1 (en) 1984-01-06
JPS5848876B2 (en) 1983-10-31

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990414