SG53286G - Improvements in or relating ro stepping electric motor driven electronic timepieces - Google Patents

Improvements in or relating ro stepping electric motor driven electronic timepieces

Info

Publication number
SG53286G
SG53286G SG532/86A SG53286A SG53286G SG 53286 G SG53286 G SG 53286G SG 532/86 A SG532/86 A SG 532/86A SG 53286 A SG53286 A SG 53286A SG 53286 G SG53286 G SG 53286G
Authority
SG
Singapore
Prior art keywords
detection
path
coil
resistance
motor driven
Prior art date
Application number
SG532/86A
Original Assignee
Seiko Epson Corp
Shimauchi Seiki Kk
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
Priority claimed from JP6179081A external-priority patent/JPS57175977A/en
Priority claimed from JP56185849A external-priority patent/JPS5886480A/en
Application filed by Seiko Epson Corp, Shimauchi Seiki Kk filed Critical Seiko Epson Corp
Publication of SG53286G publication Critical patent/SG53286G/en

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)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

In a stepping motor driven electronic timepiece a detection pulse is supplied to the motor coil to set up, across a detection resistance, a detection voltage the magnitude of which is indicative of whether the motor is in a rotation or a non-rotation condition. A path for the detection pulse current is established through the detection resistance and the coil in series only after establishment of a path which does not include said resistance. In Figure 8 the motor coil is shown at 7, and 40, 41, 42, 43, 44 and 45 represent electronic switches. 24 is the detection resistance. Figure 8a shows the switching state in which there is no detection current path; Figure 8b shows the path 46 in which the coil is included and the detection resistance is not; and Figure 8c shows the path 47 in which the coil and the detection resistance are in series. <IMAGE>
SG532/86A 1981-04-23 1986-06-12 Improvements in or relating ro stepping electric motor driven electronic timepieces SG53286G (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6179081A JPS57175977A (en) 1981-04-23 1981-04-23 Analogue electronic watch
JP56185849A JPS5886480A (en) 1981-11-19 1981-11-19 Analog electronic timepiece

Publications (1)

Publication Number Publication Date
SG53286G true SG53286G (en) 1988-02-19

Family

ID=26402870

Family Applications (1)

Application Number Title Priority Date Filing Date
SG532/86A SG53286G (en) 1981-04-23 1986-06-12 Improvements in or relating ro stepping electric motor driven electronic timepieces

Country Status (5)

Country Link
CH (1) CH643426B (en)
DE (1) DE3214543A1 (en)
GB (1) GB2101367B (en)
HK (1) HK10387A (en)
SG (1) SG53286G (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5550795A (en) * 1993-01-18 1996-08-27 Seiko Instruments Inc. Electronic timepiece and a method of driving a stepping motor of electronic timepiece
JP3162652B2 (en) * 1997-04-25 2001-05-08 セイコーインスツルメンツ株式会社 Electronic clock
JP4343549B2 (en) * 2003-02-24 2009-10-14 セイコーインスツル株式会社 Step motor control device and electronic timepiece
US11233477B2 (en) 2018-06-07 2022-01-25 Ab Mikroelektronik Gesellschaft Mit Beschraenkter Haftung Method and system for controlling an electric motor and detecting a stall condition

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53132382A (en) * 1977-04-23 1978-11-18 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
JPS5643575A (en) * 1979-09-18 1981-04-22 Seiko Instr & Electronics Ltd Electronic clock

Also Published As

Publication number Publication date
CH643426B (en)
DE3214543A1 (en) 1982-11-11
GB2101367A (en) 1983-01-12
GB2101367B (en) 1984-09-05
HK10387A (en) 1987-02-06
DE3214543C2 (en) 1987-12-03
CH643426GA3 (en) 1984-06-15

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