JPH0415917B2 - - Google Patents

Info

Publication number
JPH0415917B2
JPH0415917B2 JP60199245A JP19924585A JPH0415917B2 JP H0415917 B2 JPH0415917 B2 JP H0415917B2 JP 60199245 A JP60199245 A JP 60199245A JP 19924585 A JP19924585 A JP 19924585A JP H0415917 B2 JPH0415917 B2 JP H0415917B2
Authority
JP
Japan
Prior art keywords
magnetic field
comparison
comparison result
step motor
reference voltage
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 - Lifetime
Application number
JP60199245A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6258189A (ja
Inventor
Yoshihiko Kyono
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
Priority to JP60199245A priority Critical patent/JPS6258189A/ja
Priority to US06/903,692 priority patent/US4688948A/en
Priority to EP86306918A priority patent/EP0221648B1/en
Priority to DE8686306918T priority patent/DE3663751D1/de
Publication of JPS6258189A publication Critical patent/JPS6258189A/ja
Publication of JPH0415917B2 publication Critical patent/JPH0415917B2/ja
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)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
JP60199245A 1985-09-09 1985-09-09 アナログ電子時計 Granted JPS6258189A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP60199245A JPS6258189A (ja) 1985-09-09 1985-09-09 アナログ電子時計
US06/903,692 US4688948A (en) 1985-09-09 1986-09-04 Electronic analogue timepiece of DC magnetic field detection type
EP86306918A EP0221648B1 (en) 1985-09-09 1986-09-08 Electronic analog timepiece with dc magnetic field detector
DE8686306918T DE3663751D1 (en) 1985-09-09 1986-09-08 Electronic analog timepiece with dc magnetic field detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60199245A JPS6258189A (ja) 1985-09-09 1985-09-09 アナログ電子時計

Publications (2)

Publication Number Publication Date
JPS6258189A JPS6258189A (ja) 1987-03-13
JPH0415917B2 true JPH0415917B2 (en]) 1992-03-19

Family

ID=16404583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60199245A Granted JPS6258189A (ja) 1985-09-09 1985-09-09 アナログ電子時計

Country Status (4)

Country Link
US (1) US4688948A (en])
EP (1) EP0221648B1 (en])
JP (1) JPS6258189A (en])
DE (1) DE3663751D1 (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021076543A (ja) * 2019-11-13 2021-05-20 セイコーエプソン株式会社 モーター制御回路、ムーブメント、電子時計、および電子時計の制御方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH671135GA3 (en) * 1987-12-11 1989-08-15 Control method for stepper motor - using magnetic field detector allowing compensation for ambient magnetic field by adjusting drive pulses
US5933392A (en) * 1995-09-20 1999-08-03 Citizen Watch Co., Ltd. Electronic watch
JP3541601B2 (ja) * 1997-02-07 2004-07-14 セイコーエプソン株式会社 ステッピングモーターの制御装置、その制御方法および計時装置
JP4751573B2 (ja) * 2003-12-12 2011-08-17 シチズンホールディングス株式会社 アナログ電子時計
JP5363167B2 (ja) * 2008-05-29 2013-12-11 セイコーインスツル株式会社 ステッピングモータ制御回路及びアナログ電子時計
JP2010243473A (ja) * 2009-03-18 2010-10-28 Seiko Instruments Inc ステッピングモータ制御回路及びアナログ電子時計
JP2011075463A (ja) * 2009-09-30 2011-04-14 Seiko Instruments Inc ステッピングモータ制御回路及びアナログ電子時計
JP2011169650A (ja) * 2010-02-16 2011-09-01 Seiko Instruments Inc ステッピングモータ制御回路及びアナログ電子時計

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS5370873A (en) * 1976-12-07 1978-06-23 Seiko Epson Corp Electronic wristwatch
JPS5428176A (en) * 1977-08-04 1979-03-02 Seiko Instr & Electronics Ltd Electronic watch
JPS5438169A (en) * 1977-08-31 1979-03-22 Seiko Instr & Electronics Ltd Electronic watch
US4321521A (en) * 1978-12-25 1982-03-23 Kabushiki Kaisha Daini Seikosha Detection device of electronic timepiece
JPS55147381A (en) * 1979-05-04 1980-11-17 Seiko Instr & Electronics Ltd Detector for electronic watch
JPS56110073A (en) * 1980-02-05 1981-09-01 Citizen Watch Co Ltd Electronic watch
JPS56158978A (en) * 1980-05-13 1981-12-08 Citizen Watch Co Ltd Electronic watch
JPS5712382A (en) * 1980-06-25 1982-01-22 Seiko Instr & Electronics Ltd Analog electronic timepiece
GB2134290B (en) * 1982-12-16 1986-02-26 Suwa Seikosha Kk An analog electronic timepiece

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021076543A (ja) * 2019-11-13 2021-05-20 セイコーエプソン株式会社 モーター制御回路、ムーブメント、電子時計、および電子時計の制御方法

Also Published As

Publication number Publication date
JPS6258189A (ja) 1987-03-13
EP0221648B1 (en) 1989-05-31
US4688948A (en) 1987-08-25
DE3663751D1 (en) 1989-07-06
EP0221648A1 (en) 1987-05-13

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees