GB2101367B - Improvements in or relating to stepping electric motor driven electronic timepieces. - Google Patents

Improvements in or relating to stepping electric motor driven electronic timepieces.

Info

Publication number
GB2101367B
GB2101367B GB08211495A GB8211495A GB2101367B GB 2101367 B GB2101367 B GB 2101367B GB 08211495 A GB08211495 A GB 08211495A GB 8211495 A GB8211495 A GB 8211495A GB 2101367 B GB2101367 B GB 2101367B
Authority
GB
United Kingdom
Prior art keywords
detection
path
coil
resistance
motor driven
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.)
Expired
Application number
GB08211495A
Other languages
English (en)
Other versions
GB2101367A (en
Inventor
Masuo Kitano
Kenji Sakamoto
Jiro Ito
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.)
Suwa Seikosha KK
SHIMAUCHI SEIKI KK
Original Assignee
Suwa Seikosha KK
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 Suwa Seikosha KK, SHIMAUCHI SEIKI KK filed Critical Suwa Seikosha KK
Publication of GB2101367A publication Critical patent/GB2101367A/en
Application granted granted Critical
Publication of GB2101367B publication Critical patent/GB2101367B/en
Expired 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)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
GB08211495A 1981-04-23 1982-04-21 Improvements in or relating to stepping electric motor driven electronic timepieces. Expired GB2101367B (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 (2)

Publication Number Publication Date
GB2101367A GB2101367A (en) 1983-01-12
GB2101367B true GB2101367B (en) 1984-09-05

Family

ID=26402870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08211495A Expired GB2101367B (en) 1981-04-23 1982-04-21 Improvements in or relating to 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
EP0679967B1 (en) * 1993-01-18 1998-09-30 Seiko Instruments Inc. Electronic timepiece
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
JPS53132381A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132382A (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
SG53286G (en) 1988-02-19
DE3214543A1 (de) 1982-11-11
DE3214543C2 (enrdf_load_stackoverflow) 1987-12-03
HK10387A (en) 1987-02-06
CH643426B (de)
GB2101367A (en) 1983-01-12
CH643426GA3 (enrdf_load_stackoverflow) 1984-06-15

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20020420