DE3214543A1 - Elektronische analoguhr - Google Patents

Elektronische analoguhr

Info

Publication number
DE3214543A1
DE3214543A1 DE19823214543 DE3214543A DE3214543A1 DE 3214543 A1 DE3214543 A1 DE 3214543A1 DE 19823214543 DE19823214543 DE 19823214543 DE 3214543 A DE3214543 A DE 3214543A DE 3214543 A1 DE3214543 A1 DE 3214543A1
Authority
DE
Germany
Prior art keywords
test
pulse
coil
rotor
current
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
DE19823214543
Other languages
German (de)
English (en)
Other versions
DE3214543C2 (xx
Inventor
Jiro Ito
Masuo Matsumoto Nagano Kitano
Kenji Suwa Nagano Sakamoto
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.)
Shimauchi Seiki Kk Suwa Nagano Jp Seiko Epson
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 DE3214543A1 publication Critical patent/DE3214543A1/de
Application granted granted Critical
Publication of DE3214543C2 publication Critical patent/DE3214543C2/de
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)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
DE19823214543 1981-04-23 1982-04-20 Elektronische analoguhr Granted DE3214543A1 (de)

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
DE3214543A1 true DE3214543A1 (de) 1982-11-11
DE3214543C2 DE3214543C2 (xx) 1987-12-03

Family

ID=26402870

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823214543 Granted DE3214543A1 (de) 1981-04-23 1982-04-20 Elektronische analoguhr

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0679967A1 (en) * 1993-01-18 1995-11-02 Seiko Instruments Inc. Electronic timepiece

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817654A1 (de) * 1977-04-23 1978-10-26 Seiko Instr & Electronics Elektronische uhr
DE2817624A1 (de) * 1977-04-23 1978-10-26 Seiko Instr & Electronics Elektronische uhr
DE2817648A1 (de) * 1977-04-23 1978-10-26 Seiko Instr & Electronics Elektronische uhr
DE3034395A1 (de) * 1979-09-18 1981-04-16 Kabushiki Kaisha Daini Seikosha, Tokyo Elektronische analoguhr

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817654A1 (de) * 1977-04-23 1978-10-26 Seiko Instr & Electronics Elektronische uhr
DE2817624A1 (de) * 1977-04-23 1978-10-26 Seiko Instr & Electronics Elektronische uhr
DE2817648A1 (de) * 1977-04-23 1978-10-26 Seiko Instr & Electronics Elektronische uhr
DE3034395A1 (de) * 1979-09-18 1981-04-16 Kabushiki Kaisha Daini Seikosha, Tokyo Elektronische analoguhr

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0679967A1 (en) * 1993-01-18 1995-11-02 Seiko Instruments Inc. Electronic timepiece
EP0679967A4 (en) * 1993-01-18 1997-02-26 Seiko Instr Inc TIMER.

Also Published As

Publication number Publication date
CH643426GA3 (xx) 1984-06-15
DE3214543C2 (xx) 1987-12-03
SG53286G (en) 1988-02-19
GB2101367B (en) 1984-09-05
CH643426B (de)
HK10387A (en) 1987-02-06
GB2101367A (en) 1983-01-12

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: SHIMAUCHI SEIKI K.K., SUWA, NAGANO, JP KABUSHIKI K

D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: HOFFMANN, E., DIPL.-ING., PAT.-ANW., 82166 GRAEFELFING

8327 Change in the person/name/address of the patent owner

Owner name: SHIMAUCHI SEIKI K.K., SUWA, NAGANO, JP SEIKO EPSON