CH680409GA3 - - Google Patents

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Publication number
CH680409GA3
CH680409GA3 CH397789A CH397789A CH680409GA3 CH 680409G A3 CH680409G A3 CH 680409GA3 CH 397789 A CH397789 A CH 397789A CH 397789 A CH397789 A CH 397789A CH 680409G A3 CH680409G A3 CH 680409GA3
Authority
CH
Switzerland
Prior art keywords
date
electronic circuit
disk
electronic
receiver
Prior art date
Application number
CH397789A
Other languages
French (fr)
Other versions
CH680409B5 (en
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 filed Critical
Priority to CH3977/89A priority Critical patent/CH680409B5/fr
Priority to FR909013211A priority patent/FR2654226B1/en
Priority to GB9023106A priority patent/GB2237635B/en
Priority to DE4034039A priority patent/DE4034039A1/en
Priority to US07/605,550 priority patent/US5305289A/en
Priority to JP2298718A priority patent/JP3010062B2/en
Publication of CH680409GA3 publication Critical patent/CH680409GA3/fr
Publication of CH680409B5 publication Critical patent/CH680409B5/fr

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G04C17/005—Indicating the time optically by electric means by discs
    • G04C17/0058—Indicating the time optically by electric means by discs with date indication
    • G04C17/0066—Indicating the time optically by electric means by discs with date indication electromagnetically driven, e.g. intermittently

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Abstract

The device for implementing the method for the automatic initialisation of the date display of a perpetual calendar electronic watch comprising a face fitted with a window and a date disk permits, every time the watch stops, at the moment the electronic circuit is reconnected, the automatic identification of the date appearing in the window, by optically analysing a code attributed to this date and by memorizing this data by means of the electronic circuit. This optical device (10) comprises a source (11) emitting a beam of light (12), reflective surfaces (13) fixed onto the date disk (15) and a receiver (14). The beam (16) reflected by a surface (13) is intercepted by the receiver (14) which supplies a signal to the electronic circuit (17) which controls an electronic motor (18) driving the disk (15) by a system of reduction gears (19, 20).
CH3977/89A 1989-11-03 1989-11-03 CH680409B5 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CH3977/89A CH680409B5 (en) 1989-11-03 1989-11-03
FR909013211A FR2654226B1 (en) 1989-11-03 1990-10-22 AUTOMATIC INITIALIZATION PROCESS AT LEAST DISPLAY OF THE QUANTIEME, DEVICE FOR IMPLEMENTING THIS PROCESS AND WATCH EQUIPPED WITH THIS DEVICE.
GB9023106A GB2237635B (en) 1989-11-03 1990-10-24 An automatic initialisation method for at least the date display,a device for performing this method and a watch equipped with said device
DE4034039A DE4034039A1 (en) 1989-11-03 1990-10-26 METHOD FOR AUTOMATICALLY INITIALIZING AT LEAST THE DISPLAY OF THE DAY NUMBER, DEVICE FOR CARRYING OUT THIS METHOD AND CLOCK THAT IS EQUIPPED WITH THIS DEVICE
US07/605,550 US5305289A (en) 1989-11-03 1990-10-30 Automatic initialisation method for at least the date display, a device for performing this method and a watch equipped with said device
JP2298718A JP3010062B2 (en) 1989-11-03 1990-11-02 Automatic date display initialization method and device, and perpetual electronic clock equipped with the device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH3977/89A CH680409B5 (en) 1989-11-03 1989-11-03

Publications (2)

Publication Number Publication Date
CH680409GA3 true CH680409GA3 (en) 1992-08-31
CH680409B5 CH680409B5 (en) 1993-02-26

Family

ID=4267498

Family Applications (1)

Application Number Title Priority Date Filing Date
CH3977/89A CH680409B5 (en) 1989-11-03 1989-11-03

Country Status (6)

Country Link
US (1) US5305289A (en)
JP (1) JP3010062B2 (en)
CH (1) CH680409B5 (en)
DE (1) DE4034039A1 (en)
FR (1) FR2654226B1 (en)
GB (1) GB2237635B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208115A1 (en) * 1992-03-13 1993-09-16 Link Waldemar Gmbh Co DISC ENDOPROTHESIS
JP3489892B2 (en) * 1994-12-27 2004-01-26 シチズン時計株式会社 Electronic clock
JPH1062567A (en) * 1996-08-26 1998-03-06 Citizen Watch Co Ltd Electronic watch with month end correcting function
DE19861413B3 (en) * 1997-12-26 2012-06-14 Citizen Holdings Co., Ltd. Electronic timepiece has a simple calendar with a control circuit deciding the number of days required using a permanent calendar circuit to drive a date plate
JP4406779B2 (en) * 1997-12-26 2010-02-03 シチズンホールディングス株式会社 Electronic clock with uncensored device at the end of the calendar
DE19882138B4 (en) * 1997-12-26 2007-05-16 Citizen Watch Co Ltd Electronic clock with calendar device
JP2900154B1 (en) * 1998-02-12 1999-06-02 セイコーインスツルメンツ株式会社 Electronic clock with auto calendar
JP3636131B2 (en) * 2001-11-14 2005-04-06 リズム時計工業株式会社 Calendar device
US7243226B2 (en) * 2001-12-12 2007-07-10 Valve Corporation Method and system for enabling content security in a distributed system
JP3772763B2 (en) * 2002-02-28 2006-05-10 セイコーエプソン株式会社 Electronic clock with date display function
DE602005005878T2 (en) * 2004-02-19 2009-05-20 Seiko Epson Corp. Electronic clock with calendar function and method for driving this clock
TWI287743B (en) 2005-10-17 2007-10-01 Asustek Comp Inc Method for initiating a display chip
JP5458061B2 (en) * 2011-06-30 2014-04-02 リズム時計工業株式会社 Clock device
JP5424421B2 (en) * 2011-06-30 2014-02-26 リズム時計工業株式会社 Clock device
EP2626752B1 (en) * 2012-02-08 2014-11-19 The Swatch Group Research and Development Ltd. Device for detecting and synchronising the position of a wheel of a clock mechanism
JP2016206057A (en) * 2015-04-24 2016-12-08 セイコーエプソン株式会社 Electronic watch
EP3926415B1 (en) * 2020-06-18 2025-11-05 ETA SA Manufacture Horlogère Suisse Device for update and related method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416504A1 (en) * 1978-01-31 1979-08-31 Junghans Gmbh Geb ELECTRONIC WATCH
JPS55106377A (en) * 1979-02-09 1980-08-15 Citizen Watch Co Ltd Electronic watch
DE3513961A1 (en) * 1985-04-18 1986-10-23 Forschungsgesellschaft für Feingeräte-, Mikro- und Uhrentechnik e.V., 7000 Stuttgart Device for detecting the state of the motion in an electronic clock, in particular a radio-controlled clock

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253173A (en) * 1979-10-15 1981-02-24 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Dual display synchronization system for a timepiece
CH660663GA3 (en) * 1984-12-14 1987-06-15
CH663512GA3 (en) * 1986-05-26 1987-12-31

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416504A1 (en) * 1978-01-31 1979-08-31 Junghans Gmbh Geb ELECTRONIC WATCH
JPS55106377A (en) * 1979-02-09 1980-08-15 Citizen Watch Co Ltd Electronic watch
DE3513961A1 (en) * 1985-04-18 1986-10-23 Forschungsgesellschaft für Feingeräte-, Mikro- und Uhrentechnik e.V., 7000 Stuttgart Device for detecting the state of the motion in an electronic clock, in particular a radio-controlled clock

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 4, no. 160 (P-035), 8 novembre 1980; & JP-A-55 106 377 (CITIZEN WATCH CO., LTD) 15-08-1980 *

Also Published As

Publication number Publication date
JPH03160392A (en) 1991-07-10
GB2237635B (en) 1993-05-12
US5305289A (en) 1994-04-19
FR2654226A1 (en) 1991-05-10
GB9023106D0 (en) 1990-12-05
CH680409B5 (en) 1993-02-26
FR2654226B1 (en) 1992-06-26
JP3010062B2 (en) 2000-02-14
DE4034039A1 (en) 1991-05-08
GB2237635A (en) 1991-05-08

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