JPS56101584A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
JPS56101584A
JPS56101584A JP394580A JP394580A JPS56101584A JP S56101584 A JPS56101584 A JP S56101584A JP 394580 A JP394580 A JP 394580A JP 394580 A JP394580 A JP 394580A JP S56101584 A JPS56101584 A JP S56101584A
Authority
JP
Japan
Prior art keywords
pulse
correction
unit
driving
driving pulse
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
JP394580A
Other languages
Japanese (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 JP394580A priority Critical patent/JPS56101584A/en
Priority to GB8037118A priority patent/GB2067795B/en
Publication of JPS56101584A publication Critical patent/JPS56101584A/en
Priority to SG26785A priority patent/SG26785G/en
Priority to HK64186A priority patent/HK64186A/en
Priority to MY8700571A priority patent/MY8700571A/en
Pending 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
    • 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

Abstract

PURPOSE:To avoid delay by two seconds even when an error is detected by a method wherein the 1st correction pulse having a phase opposite to an ordinary driving pulse and the 2nd correction pulse having a phase same as the later ordinary driving pulse are employed. CONSTITUTION:An output of an oscillating unit 10 is frequency divided through a frequency dividing unit 11 and it is entered into a control unit 12 through a wave form composing unit 15. A control unit 12 supplies an ordinary driving pulse and a correction driving pulse to a driving detection unit 13 by means of a feedback signal from the driving detection unit 13. An output of the driving detection unit 13 is connected to both coil terminals of a step motor 14. The step motor 14 drives a indicating hand 17 through a wheel train 16. When a nonrotation of a rotor of the step motor 14 is detected, the control unit 12 outputs a correction pulse of a direction opposite to the ordinary driving pulse as the 1st correction pulse and following thereto, the 2nd correction pulse of a direction same as the ordinary driving pulse is outputted.
JP394580A 1980-01-17 1980-01-17 Electronic timepiece Pending JPS56101584A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP394580A JPS56101584A (en) 1980-01-17 1980-01-17 Electronic timepiece
GB8037118A GB2067795B (en) 1980-01-17 1980-11-19 Stepping motor driven electronic timepieces
SG26785A SG26785G (en) 1980-01-17 1985-04-10 Improvements in or relating to stepping motor driven electronic timepieces
HK64186A HK64186A (en) 1980-01-17 1986-08-28 Improvements in or relating to stepping motor driven electronic timepieces
MY8700571A MY8700571A (en) 1980-01-17 1987-12-30 Improvements in or relating to stepping motor driven electronic timepieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP394580A JPS56101584A (en) 1980-01-17 1980-01-17 Electronic timepiece

Publications (1)

Publication Number Publication Date
JPS56101584A true JPS56101584A (en) 1981-08-14

Family

ID=11571251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP394580A Pending JPS56101584A (en) 1980-01-17 1980-01-17 Electronic timepiece

Country Status (5)

Country Link
JP (1) JPS56101584A (en)
GB (1) GB2067795B (en)
HK (1) HK64186A (en)
MY (1) MY8700571A (en)
SG (1) SG26785G (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910875A (en) * 1982-07-09 1984-01-20 Seiko Epson Corp Electronic timepiece
US4960974A (en) * 1988-06-11 1990-10-02 Mazda Motor Corporation Method of assembling a vehicle body panel member

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH648723GA3 (en) * 1982-09-10 1985-04-15
JP3508444B2 (en) * 1997-02-07 2004-03-22 セイコーエプソン株式会社 Control device for stepping motor, control method thereof, and timing device
EP0982846B1 (en) * 1998-08-25 2011-10-19 ETA SA Manufacture Horlogère Suisse Process and device for controlling a stepper motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910875A (en) * 1982-07-09 1984-01-20 Seiko Epson Corp Electronic timepiece
JPS6323514B2 (en) * 1982-07-09 1988-05-17 Seiko Epson Corp
US4960974A (en) * 1988-06-11 1990-10-02 Mazda Motor Corporation Method of assembling a vehicle body panel member

Also Published As

Publication number Publication date
SG26785G (en) 1991-01-04
GB2067795B (en) 1983-07-06
HK64186A (en) 1986-09-05
MY8700571A (en) 1987-12-31
GB2067795A (en) 1981-07-30

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