CH646301GA3 - - Google Patents

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Publication number
CH646301GA3
CH646301GA3 CH824381A CH824381A CH646301GA3 CH 646301G A3 CH646301G A3 CH 646301GA3 CH 824381 A CH824381 A CH 824381A CH 824381 A CH824381 A CH 824381A CH 646301G A3 CH646301G A3 CH 646301GA3
Authority
CH
Switzerland
Prior art keywords
hand
mirror
watch
wheel
detection device
Prior art date
Application number
CH824381A
Other languages
French (fr)
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 CH824381A priority Critical patent/CH646301GA3/fr
Priority to US06/450,140 priority patent/US4420263A/en
Priority to DE8282810548T priority patent/DE3275765D1/en
Priority to EP82810548A priority patent/EP0082821B1/en
Priority to JP57225140A priority patent/JPS58150881A/en
Publication of CH646301GA3 publication Critical patent/CH646301GA3/fr

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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G7/00—Synchronisation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

For performing a very precise detection of the position of at least one hand, the watch is provided with an electro-optical detection device. The detection device comprises a wheel 8 carrying a mirror 26. The wheel 8 is intermittently driven by the driving member 6 for defining n angular positions of the mirror 26. The member 6 is meshing with the gear train 12 of the watch. It further comprises a light emitter 30 and a light receiver 32 which receives a light beam when the mirror 26 is in an angular position corresponding to the reference position of the hand. The number n is inferior to the number of steps performed by the hand during a complete revolution of said hand.
CH824381A 1981-12-23 1981-12-23 CH646301GA3 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH824381A CH646301GA3 (en) 1981-12-23 1981-12-23
US06/450,140 US4420263A (en) 1981-12-23 1982-12-15 Electronic watch with means for detecting the movement of a hand through a reference position
DE8282810548T DE3275765D1 (en) 1981-12-23 1982-12-17 Electronic watch provided with detection means for the passage across a reference position
EP82810548A EP0082821B1 (en) 1981-12-23 1982-12-17 Electronic watch provided with detection means for the passage across a reference position
JP57225140A JPS58150881A (en) 1981-12-23 1982-12-23 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH824381A CH646301GA3 (en) 1981-12-23 1981-12-23

Publications (1)

Publication Number Publication Date
CH646301GA3 true CH646301GA3 (en) 1984-11-30

Family

ID=4337348

Family Applications (1)

Application Number Title Priority Date Filing Date
CH824381A CH646301GA3 (en) 1981-12-23 1981-12-23

Country Status (5)

Country Link
US (1) US4420263A (en)
EP (1) EP0082821B1 (en)
JP (1) JPS58150881A (en)
CH (1) CH646301GA3 (en)
DE (1) DE3275765D1 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH649187GA3 (en) * 1982-10-13 1985-05-15
FR2568029B1 (en) * 1984-07-19 1987-05-29 Hatot Leon Ets DATA TRANSMISSION INSTALLATION, PARTICULARLY FOR TIME DISTRIBUTION, TRANSMITTER AND RECEIVER FOR THIS INSTALLATION
DE3510861C2 (en) * 1984-11-09 1986-09-25 Gebrüder Junghans GmbH, 7230 Schramberg Display position detection device for a clock, in particular a radio clock
DE3446724A1 (en) * 1984-12-21 1986-07-10 Audi AG, 8070 Ingolstadt RADIO CONTROLLED CLOCK
GB2197968A (en) * 1986-11-21 1988-06-02 Europ Electronic Syst Ltd Analogue clock
CH668678GA3 (en) * 1987-03-03 1989-01-31
DE8712809U1 (en) * 1987-09-23 1987-11-05 Junghans Uhren GmbH, 7230 Schramberg Two-motor gear train, especially for a radio-controlled clock
CH680696B5 (en) * 1989-11-03 1993-04-30 Rolex Montres
DE4128752C2 (en) * 1991-08-29 1997-12-04 Junghans Uhren Gmbh Position detection and correction device
US5363348A (en) * 1992-09-04 1994-11-08 Damle Madhav N High resolution, remotely resettable time clock
JP2500513B2 (en) * 1992-11-10 1996-05-29 株式会社精工舎 Watch machine
DE4311065C1 (en) * 1993-04-03 1994-02-17 Braun Ag Defined position identification system for analogue timepiece hands - uses functional zone at end of hours hand to provide optical path between optical source and photoelement.
FR2728087A1 (en) * 1994-12-13 1996-06-14 Gorgy Timing Method of operation of clock with hands
JPH11211862A (en) * 1997-11-19 1999-08-06 Seiko Epson Corp Information processor
SG85647A1 (en) * 1998-06-29 2002-01-15 Asulab Sa Device including at least two coaxial wheels and means for detecting the angular position thereof and method for detecting said angular positions
US6307815B1 (en) * 1998-07-23 2001-10-23 Sandia Corporation Microelectromechanical timer
US6473367B2 (en) * 2000-12-15 2002-10-29 Koung-Chung Peng Positioning mechanism for a radio clock
US6473366B2 (en) * 2000-12-15 2002-10-29 Koung-Chung Peng Method for timing a clock
US20030063525A1 (en) * 2001-09-28 2003-04-03 Ken Richardson Microprocessor controlled quartz analog clock movement
TW558677B (en) * 2002-08-02 2003-10-21 Chih-Hao Yiu Device for detecting angular position
US20040125702A1 (en) * 2002-10-21 2004-07-01 Hideki Kitajima Rotational position detection device, hand position detection device and clock using the hand position detection device
US20040085860A1 (en) * 2002-10-31 2004-05-06 Yiu Chih Hao Position detecting and correcting device for timepiece
JP5049263B2 (en) * 2006-03-03 2012-10-17 シチズンホールディングス株式会社 Analog electronic clock
US11175747B2 (en) * 2013-02-04 2021-11-16 Pixart Imaging Inc. Optical processing apparatus and operating method thereof
TW201925824A (en) * 2017-12-01 2019-07-01 原相科技股份有限公司 Optical structure for locating a rotatory object
CH708234B1 (en) * 2013-06-27 2015-05-15 Soprod Sa Portable multifunction device controlled by external information.
WO2015151944A1 (en) * 2014-04-01 2015-10-08 シチズンホールディングス株式会社 Timepiece
US10114342B2 (en) * 2014-09-11 2018-10-30 Samsung Electronics Co., Ltd. Wearable device
JP7099242B2 (en) 2018-10-16 2022-07-12 セイコーエプソン株式会社 Electronic clock, control circuit of electronic clock and hand position detection method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359474A (en) * 1964-11-27 1967-12-19 Itt Stepper motor control and step detector
BE756389A (en) * 1969-09-25 1971-03-22 Comp Generale Electricite TIME DEVIATION DETECTOR AND SPEED REGULATOR
JPS5610883B2 (en) * 1973-12-27 1981-03-11
GB1510744A (en) * 1975-09-11 1978-05-17 Diehl Electro-mechanical adjustment means for adjusting an electronic digital indicator
US4119892A (en) * 1975-11-13 1978-10-10 Seiko Koki Kabushiki Kaisha Light emitting indicating circuit for a timepiece
JPS53132382A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS5428176A (en) * 1977-08-04 1979-03-02 Seiko Instr & Electronics Ltd Electronic watch
CH620085B (en) * 1977-12-31 Ebauchesfabrik Eta Ag QUARTZ WATCH AND ANALOGUE DISPLAY DEVICE WITH MANUAL TIME CHANGE CONTROL.
CH616045B (en) * 1978-06-20 Ebauches Sa PROCESS FOR REDUCING THE CONSUMPTION OF AN ELECTRONIC WATCH PART AND ELECTRONIC WATCH PART IMPLEMENTING THIS PROCESS.
JPS55147381A (en) * 1979-05-04 1980-11-17 Seiko Instr & Electronics Ltd Detector for electronic watch
JPS5610883U (en) * 1979-07-04 1981-01-29
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
JPH052250U (en) * 1991-06-21 1993-01-14 三洋電機株式会社 Integrated circuit input device

Also Published As

Publication number Publication date
JPS6336478B2 (en) 1988-07-20
US4420263A (en) 1983-12-13
JPS58150881A (en) 1983-09-07
EP0082821A1 (en) 1983-06-29
DE3275765D1 (en) 1987-04-30
EP0082821B1 (en) 1987-03-18

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