JPS55106377A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS55106377A
JPS55106377A JP1404779A JP1404779A JPS55106377A JP S55106377 A JPS55106377 A JP S55106377A JP 1404779 A JP1404779 A JP 1404779A JP 1404779 A JP1404779 A JP 1404779A JP S55106377 A JPS55106377 A JP S55106377A
Authority
JP
Japan
Prior art keywords
watch
turned
display unit
time display
control
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.)
Pending
Application number
JP1404779A
Other languages
Japanese (ja)
Inventor
Tatsuo Nitta
Akira Tsuzuki
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
Priority to JP1404779A priority Critical patent/JPS55106377A/en
Publication of JPS55106377A publication Critical patent/JPS55106377A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C13/00—Driving mechanisms for clocks by master-clocks
    • G04C13/02—Circuit arrangements; Electric clock installations
    • G04C13/027—Circuit arrangements; Electric clock installations master-slave systems using transmission of other driving signals, e.g. coded signals

Landscapes

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

Abstract

PURPOSE:To perform the control of the watch circuit for the analog-type electronic watch by securing the photoelectric detection for the position of the time display unit and then using the detected signals. CONSTITUTION:Gears 31-35 are turned by rotor 2a of the step motor, and thus the watch hands are driven. In this case, optical path modulation component 20A (code plate) is turned in synchronization with gear 32 attached with the second hand.And the position of component 20A is detected by photo diode 6a which receives the light of light emitting diode 6c. With this detected signals, the control is given to the gain and loss of the time display unit, the alarm ringing and others.
JP1404779A 1979-02-09 1979-02-09 Electronic watch Pending JPS55106377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1404779A JPS55106377A (en) 1979-02-09 1979-02-09 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1404779A JPS55106377A (en) 1979-02-09 1979-02-09 Electronic watch

Publications (1)

Publication Number Publication Date
JPS55106377A true JPS55106377A (en) 1980-08-15

Family

ID=11850175

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1404779A Pending JPS55106377A (en) 1979-02-09 1979-02-09 Electronic watch

Country Status (1)

Country Link
JP (1) JPS55106377A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654226A1 (en) * 1989-11-03 1991-05-10 Rolex Montres AUTOMATIC INITIALIZATION METHOD AT AT LEAST QUANTICE DISPLAY, DEVICE FOR IMPLEMENTING SAID METHOD, AND WATCH EQUIPPED WITH SAID DEVICE.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654226A1 (en) * 1989-11-03 1991-05-10 Rolex Montres AUTOMATIC INITIALIZATION METHOD AT AT LEAST QUANTICE DISPLAY, DEVICE FOR IMPLEMENTING SAID METHOD, AND WATCH EQUIPPED WITH SAID DEVICE.
CH680409GA3 (en) * 1989-11-03 1992-08-31

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