JPS5477162A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5477162A
JPS5477162A JP14464477A JP14464477A JPS5477162A JP S5477162 A JPS5477162 A JP S5477162A JP 14464477 A JP14464477 A JP 14464477A JP 14464477 A JP14464477 A JP 14464477A JP S5477162 A JPS5477162 A JP S5477162A
Authority
JP
Japan
Prior art keywords
pulses
width
drive pulses
drive
normal
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.)
Granted
Application number
JP14464477A
Other languages
Japanese (ja)
Other versions
JPS6115384B2 (en
Inventor
Masaharu Shida
Makoto Ueda
Akira Torisawa
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 JP14464477A priority Critical patent/JPS5477162A/en
Publication of JPS5477162A publication Critical patent/JPS5477162A/en
Publication of JPS6115384B2 publication Critical patent/JPS6115384B2/ja
Granted 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)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

PURPOSE:To effect the drive in accordance with a load applied thereby to reduce the electric power by feeding drive pulses to a step motor, while having their width stepwise elongated or shortened, so that the operation may be started with the drive pulses of the minimum width after the stopped condition is released. CONSTITUTION:The drive pulses of a step motor are composed of two kinds of normal drive pulses P1 and auxiliary drive pulses P2. If the step motor cannot be turned by the normal pulses P1, the auxiliary pulses P2 are supplied. With the supply of the auxiliary pulses P2, the pulse width of the subsequent normal pulses is so elongated to facilitate the rotations. When, on the contrary, the rotations can be accomplished several steps, the width of the subsequent pulses is shortened. Thus, the supply of the drive pulses can be effected stepwise. When the time metering is restarted after the stop, the normal drive pulses have their width set at the minimum one of the pulse width prepared, and thereafter the stepwise supply is accomplished.
JP14464477A 1977-12-02 1977-12-02 Electronic watch Granted JPS5477162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14464477A JPS5477162A (en) 1977-12-02 1977-12-02 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14464477A JPS5477162A (en) 1977-12-02 1977-12-02 Electronic watch

Publications (2)

Publication Number Publication Date
JPS5477162A true JPS5477162A (en) 1979-06-20
JPS6115384B2 JPS6115384B2 (en) 1986-04-23

Family

ID=15366852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14464477A Granted JPS5477162A (en) 1977-12-02 1977-12-02 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5477162A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5536792A (en) * 1978-06-20 1980-03-14 Ebauches Sa Electronic timepiece
JPS5739375A (en) * 1980-08-20 1982-03-04 Seiko Instr & Electronics Ltd Electronic timepiece
JPS57136184A (en) * 1981-02-17 1982-08-23 Seiko Epson Corp Analogue electronic watch
US4912689A (en) * 1988-05-07 1990-03-27 Seiko Epson Corporation Compensating circuitry for an electronic watch
JP2019152612A (en) * 2018-03-06 2019-09-12 セイコーインスツル株式会社 Circuit for detecting state of motor for timepieces, timepiece, and method for detecting state of motor for timepieces

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0191864U (en) * 1987-12-05 1989-06-16

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5536792A (en) * 1978-06-20 1980-03-14 Ebauches Sa Electronic timepiece
JPS5739375A (en) * 1980-08-20 1982-03-04 Seiko Instr & Electronics Ltd Electronic timepiece
JPS57136184A (en) * 1981-02-17 1982-08-23 Seiko Epson Corp Analogue electronic watch
US4912689A (en) * 1988-05-07 1990-03-27 Seiko Epson Corporation Compensating circuitry for an electronic watch
JP2019152612A (en) * 2018-03-06 2019-09-12 セイコーインスツル株式会社 Circuit for detecting state of motor for timepieces, timepiece, and method for detecting state of motor for timepieces

Also Published As

Publication number Publication date
JPS6115384B2 (en) 1986-04-23

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