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
Other languages
English (en)
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/ja
Priority claimed from JP56185849A external-priority patent/JPS5886480A/ja
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)
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 (ja) 1981-11-19 1981-11-19 アナログ電子時計

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 (enrdf_load_stackoverflow)
DE (1) DE3214543A1 (enrdf_load_stackoverflow)
GB (1) GB2101367B (enrdf_load_stackoverflow)
HK (1) HK10387A (enrdf_load_stackoverflow)
SG (1) SG53286G (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69413668T2 (de) * 1993-01-18 1999-04-15 Seiko Instruments Inc., Tokio/Tokyo Zeitgeber
JP3162652B2 (ja) * 1997-04-25 2001-05-08 セイコーインスツルメンツ株式会社 電子時計
JP4343549B2 (ja) * 2003-02-24 2009-10-14 セイコーインスツル株式会社 ステップモータ制御装置及び電子時計
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
DE3214543A1 (de) 1982-11-11
GB2101367A (en) 1983-01-12
DE3214543C2 (enrdf_load_stackoverflow) 1987-12-03
HK10387A (en) 1987-02-06
CH643426B (de)
CH643426GA3 (enrdf_load_stackoverflow) 1984-06-15
GB2101367B (en) 1984-09-05

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