GB2076567B - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
GB2076567B
GB2076567B GB8113017A GB8113017A GB2076567B GB 2076567 B GB2076567 B GB 2076567B GB 8113017 A GB8113017 A GB 8113017A GB 8113017 A GB8113017 A GB 8113017A GB 2076567 B GB2076567 B GB 2076567B
Authority
GB
United Kingdom
Prior art keywords
electronic timepiece
timepiece
electronic
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
GB8113017A
Other languages
English (en)
Other versions
GB2076567A (en
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Publication of GB2076567A publication Critical patent/GB2076567A/en
Application granted granted Critical
Publication of GB2076567B publication Critical patent/GB2076567B/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)
GB8113017A 1980-05-13 1981-04-28 Electronic timepiece Expired GB2076567B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6310080A JPS56158978A (en) 1980-05-13 1980-05-13 Electronic watch

Publications (2)

Publication Number Publication Date
GB2076567A GB2076567A (en) 1981-12-02
GB2076567B true GB2076567B (en) 1983-10-26

Family

ID=13219530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8113017A Expired GB2076567B (en) 1980-05-13 1981-04-28 Electronic timepiece

Country Status (3)

Country Link
US (1) US4460282A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS56158978A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2076567B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8203094A (nl) * 1982-08-04 1984-03-01 Philips Nv Werkwijze voor het analyseren van de in een bekrachtigingsspoel van een stappenmotor geinduceerde spanning.
JPS5980147A (ja) * 1982-10-29 1984-05-09 Rhythm Watch Co Ltd 時計用小型モ−タ
JPS6258189A (ja) * 1985-09-09 1987-03-13 Seiko Instr & Electronics Ltd アナログ電子時計
US4851755A (en) * 1988-03-01 1989-07-25 Ampex Corporation Low power stepper motor drive system and method
JP3256342B2 (ja) * 1993-08-04 2002-02-12 ティーアールダブリュ オートモーティブ ジャパン株式会社 ステッピングモータの脱調検出装置
DE19612597A1 (de) * 1996-03-29 1997-10-02 Fahrzeugklimaregelung Gmbh Anschlags- und Blockiererkennung bei einem Schrittmotor
DE19653460C2 (de) * 1996-07-30 1999-10-28 Elmos Semiconductor Ag Verfahren zur sensorlosen Schritterkennung bei Schrittmotoren
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
JPH11127595A (ja) * 1997-08-11 1999-05-11 Seiko Epson Corp 電子機器
JP4492262B2 (ja) * 2004-09-10 2010-06-30 カシオ計算機株式会社 ステップモータの駆動回路
JP5065268B2 (ja) * 2006-07-06 2012-10-31 シチズンホールディングス株式会社 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
JP5394658B2 (ja) * 2008-05-30 2014-01-22 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
JP5363168B2 (ja) * 2008-06-17 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
JP5363269B2 (ja) * 2008-12-25 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
JP2010220408A (ja) * 2009-03-17 2010-09-30 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
EP2487549B1 (en) * 2009-10-07 2020-07-08 Citizen Watch Co., Ltd. Electronic watch
JP2012063346A (ja) * 2010-08-19 2012-03-29 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
JP6162513B2 (ja) * 2012-09-07 2017-07-12 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、ムーブメント及びアナログ電子時計
US8952646B2 (en) * 2012-09-14 2015-02-10 Hamilton Sundstrand Corporation Stepper motor phase failure detection
JP6287997B2 (ja) * 2015-08-06 2018-03-07 カシオ計算機株式会社 モータ駆動装置および電子時計

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321966A (en) * 1976-08-12 1978-02-28 Citizen Watch Co Ltd Electric-mechanical converter driving circuit for timepiece
JPS53118317A (en) * 1977-03-26 1978-10-16 Hitachi Koki Kk Device for cutting paper for typewriter
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch
JPS5515054A (en) * 1978-07-19 1980-02-01 Seiko Instr & Electronics Ltd Electronic watch
JPS5921493B2 (ja) * 1978-09-12 1984-05-21 セイコーインスツルメンツ株式会社 時計の輪列負荷測定器
JPS5539016A (en) * 1978-09-12 1980-03-18 Seiko Instr & Electronics Ltd Electronic watch
JPS5619473A (en) * 1979-07-27 1981-02-24 Citizen Watch Co Ltd Electronic timepiece

Also Published As

Publication number Publication date
JPS56158978A (en) 1981-12-08
JPS6154189B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1986-11-21
US4460282A (en) 1984-07-17
GB2076567A (en) 1981-12-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000428