HK18384A - Improvements in or relating to electronic timepieces - Google Patents

Improvements in or relating to electronic timepieces

Info

Publication number
HK18384A
HK18384A HK183/84A HK18384A HK18384A HK 18384 A HK18384 A HK 18384A HK 183/84 A HK183/84 A HK 183/84A HK 18384 A HK18384 A HK 18384A HK 18384 A HK18384 A HK 18384A
Authority
HK
Hong Kong
Prior art keywords
pulse
drive
calendar display
motor
relating
Prior art date
Application number
HK183/84A
Other languages
English (en)
Original Assignee
Seiko Denshi Kogyo Kabushiki Kaisha (Seiko Instruments & Electronics 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 Seiko Denshi Kogyo Kabushiki Kaisha (Seiko Instruments & Electronics Ltd.) filed Critical Seiko Denshi Kogyo Kabushiki Kaisha (Seiko Instruments & Electronics Ltd.)
Publication of HK18384A publication Critical patent/HK18384A/xx

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)
  • Quinoline Compounds (AREA)
  • Adornments (AREA)
HK183/84A 1977-03-16 1984-03-01 Improvements in or relating to electronic timepieces HK18384A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2897777A JPS53114467A (en) 1977-03-16 1977-03-16 Electronic watch

Publications (1)

Publication Number Publication Date
HK18384A true HK18384A (en) 1984-03-09

Family

ID=12263468

Family Applications (1)

Application Number Title Priority Date Filing Date
HK183/84A HK18384A (en) 1977-03-16 1984-03-01 Improvements in or relating to electronic timepieces

Country Status (8)

Country Link
US (1) US4382691A (en, 2012)
JP (1) JPS53114467A (en, 2012)
CH (1) CH635719B (en, 2012)
DE (1) DE2733351C2 (en, 2012)
FR (1) FR2384289A1 (en, 2012)
GB (1) GB1592892A (en, 2012)
HK (1) HK18384A (en, 2012)
SG (1) SG65083G (en, 2012)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136870A (en) * 1977-04-23 1978-11-29 Seiko Instr & Electronics Ltd Electronic watch
JPS53132386A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132383A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch circuit
JPS53132381A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132385A (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
JPS53132384A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch
FR2459579A1 (fr) * 1979-06-21 1981-01-09 Suisse Horlogerie Detecteur d'avance d'un moteur pas a pas
FR2461399A1 (fr) * 1979-07-09 1981-01-30 Suisse Horlogerie Detecteur de position d'un moteur pas a pas
CH635722B (fr) * 1979-09-10 Berney Sa Jean Claude Piece d'horlogerie comportant un circuit de detection et de controle pour moteur pas a pas.
JPS58173479A (ja) * 1982-04-06 1983-10-12 Seiko Instr & Electronics Ltd 電子時計
JPS5913971A (ja) * 1982-07-15 1984-01-24 Seiko Epson Corp アナログ電子時計
CH654170GA3 (en, 2012) * 1983-08-22 1986-02-14
US4788527A (en) * 1984-09-17 1988-11-29 Johansson Fritz H Apparatus and method for device control using a two conductor power line
JPH01172850U (en, 2012) * 1988-05-24 1989-12-07
JPH0231736U (en, 2012) * 1988-08-25 1990-02-28
DE69621392T2 (de) * 1995-09-20 2003-01-09 Citizen Watch Co., Ltd. Elektronische Uhr
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
JP2001258227A (ja) * 2000-01-06 2001-09-21 Seiko Epson Corp 発電装置、それを有する計時装置および電子機器、発電装置のコギングトルク調整方法
JP2003344565A (ja) * 2002-05-29 2003-12-03 Seiko Instruments Inc 電子時計
JP4236956B2 (ja) * 2003-02-24 2009-03-11 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
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
JP2006226927A (ja) * 2005-02-21 2006-08-31 Seiko Instruments Inc ステップモータ駆動装置及びアナログ電子時計
US20070292794A1 (en) * 2006-06-16 2007-12-20 Xerox Corporation Imaging members and method for stabilizing a charge transport layer of an imaging member
US8111033B2 (en) * 2008-06-17 2012-02-07 Seiko Instruments Inc. Stepping motor control circuit and analog electronic timepiece
JP2010145106A (ja) * 2008-12-16 2010-07-01 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
JP2011101576A (ja) * 2009-10-06 2011-05-19 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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319944B2 (en, 2012) * 1971-09-25 1978-06-23
JPS5542356B2 (en, 2012) * 1972-12-22 1980-10-30
JPS6024680B2 (ja) * 1973-03-07 1985-06-14 セイコーインスツルメンツ株式会社 時計用ステツプモ−タの駆動回路
JPS5292560A (en) * 1976-01-29 1977-08-04 Seiko Instr & Electronics Ltd Switch box drive pulse width control circuit for electronic clocks
US4032827A (en) * 1976-03-15 1977-06-28 Timex Corporation Driver circuit arrangement for a stepping motor
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS53132380A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch

Also Published As

Publication number Publication date
CH635719GA3 (en, 2012) 1983-04-29
FR2384289A1 (fr) 1978-10-13
JPS53114467A (en) 1978-10-05
GB1592892A (en) 1981-07-08
CH635719B (fr)
JPS6318148B2 (en, 2012) 1988-04-16
FR2384289B1 (en, 2012) 1984-06-15
DE2733351A1 (de) 1978-09-21
US4382691A (en) 1983-05-10
SG65083G (en) 1984-07-27
DE2733351C2 (de) 1985-07-18

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Legal Events

Date Code Title Description
NR Patent deemed never to have been added to the register under section 13(7) of patents (transitional arrangements) rules