FR2442543A1 - ELECTRONIC WATCH - Google Patents

ELECTRONIC WATCH

Info

Publication number
FR2442543A1
FR2442543A1 FR7928444A FR7928444A FR2442543A1 FR 2442543 A1 FR2442543 A1 FR 2442543A1 FR 7928444 A FR7928444 A FR 7928444A FR 7928444 A FR7928444 A FR 7928444A FR 2442543 A1 FR2442543 A1 FR 2442543A1
Authority
FR
France
Prior art keywords
electronic watch
immunity
series
pulse
motor
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
FR7928444A
Other languages
French (fr)
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
Publication of FR2442543A1 publication Critical patent/FR2442543A1/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)

Abstract

L'invention concerne les moteurs pas à pas pour les montres électroniques. Lorsque le moteur pas à pas d'une montre électronique ne tourne pas sous l'effet d'une impulsion d'attaque normale, P1, on lui applique une série d'impulsions d'attaque de correction P21 à P26. La largeur de chaque impulsion de la série est choisie de façon à être optimale pour une caractéristique particulière du moteur, comme le couple de sortie, l'immunité à un champ magnétique alternatif, l'immunité à un champ continu, etc. Application à l'horlogerie.The invention relates to stepping motors for electronic watches. When the stepper motor of an electronic watch is not rotating under the effect of a normal drive pulse, P1, a series of correction drive pulses P21 to P26 is applied to it. The width of each pulse in the series is chosen so as to be optimal for a particular characteristic of the motor, such as output torque, immunity to an alternating magnetic field, immunity to a direct field, etc. Application to watchmaking.

FR7928444A 1978-11-22 1979-11-19 ELECTRONIC WATCH Pending FR2442543A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14479378A JPS5570773A (en) 1978-11-22 1978-11-22 Electronic watch

Publications (1)

Publication Number Publication Date
FR2442543A1 true FR2442543A1 (en) 1980-06-20

Family

ID=15370575

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7928444A Pending FR2442543A1 (en) 1978-11-22 1979-11-19 ELECTRONIC WATCH

Country Status (4)

Country Link
JP (1) JPS5570773A (en)
DE (1) DE2946363A1 (en)
FR (1) FR2442543A1 (en)
GB (1) GB2035625B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56164984A (en) * 1980-05-23 1981-12-18 Seiko Instr & Electronics Ltd Electronic watch
GB2134290B (en) * 1982-12-16 1986-02-26 Suwa Seikosha Kk An analog electronic timepiece
CA1239439A (en) * 1984-03-19 1988-07-19 William E. Schmitz Multiple phase stepper motor torque control apparatus and method
CN103187850A (en) * 2012-11-05 2013-07-03 武汉晨龙电子有限公司 Structure for matching stator sheet of movement low-starting-voltage and low-power-consumption stepping motor and magnetic steel

Also Published As

Publication number Publication date
JPS5570773A (en) 1980-05-28
GB2035625B (en) 1983-01-06
GB2035625A (en) 1980-06-18
DE2946363A1 (en) 1980-06-04

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