FR2394840B1 - - Google Patents

Info

Publication number
FR2394840B1
FR2394840B1 FR7818476A FR7818476A FR2394840B1 FR 2394840 B1 FR2394840 B1 FR 2394840B1 FR 7818476 A FR7818476 A FR 7818476A FR 7818476 A FR7818476 A FR 7818476A FR 2394840 B1 FR2394840 B1 FR 2394840B1
Authority
FR
France
Prior art keywords
motors
corrected
display
stepping motor
motor drives
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
FR7818476A
Other languages
French (fr)
Other versions
FR2394840A1 (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.)
SSIH Management Services SA
Original Assignee
SSIH Management Services SA
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 SSIH Management Services SA filed Critical SSIH Management Services SA
Publication of FR2394840A1 publication Critical patent/FR2394840A1/en
Application granted granted Critical
Publication of FR2394840B1 publication Critical patent/FR2394840B1/fr
Granted 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
    • G04C3/146—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor incorporating two or more stepping motors or rotors
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C17/00—Indicating the time optically by electric means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C9/00—Electrically-actuated devices for setting the time-indicating means

Abstract

An electronic watch with mechanical display is more easily altered or corrected by sharing the display driving tests among a plurality of duel rotation sense motors. Such an arrangement enables practicable obtaining of a perpetual calendar in such a watch. A first stepping motor drives the seconds and minutes displays Figure 1, and the second stepping motor drives the hours and calendar display. Drive signals for the motors are derived by respective frequency dividers from a crystal controlled oscillator. When setting, a selector 8 is operated to select the unit to be corrected and in response to operation of a switch 9 or 10 the appropriate motor is driven forward or backward at a slow or fast rate. Memory circuits enable automatic adjustment for the number of days in the current month.
FR7818476A 1977-06-14 1978-06-09 ELECTRONIC WATCH WITH MECHANICAL DISPLAY Granted FR2394840A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH738277A CH613837B (en) 1977-06-14 1977-06-14 ELECTRONIC WATCH WITH MECHANICAL DISPLAY.

Publications (2)

Publication Number Publication Date
FR2394840A1 FR2394840A1 (en) 1979-01-12
FR2394840B1 true FR2394840B1 (en) 1981-04-30

Family

ID=4324267

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7818476A Granted FR2394840A1 (en) 1977-06-14 1978-06-09 ELECTRONIC WATCH WITH MECHANICAL DISPLAY

Country Status (5)

Country Link
JP (1) JPS5439666A (en)
CH (1) CH613837B (en)
DE (1) DE2824990A1 (en)
FR (1) FR2394840A1 (en)
GB (1) GB2001187B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398832A (en) 1981-02-16 1983-08-16 Compagnie Des Montres Longines Francillon Sa Multifunction timepiece

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013153B2 (en) * 1976-12-03 1985-04-05 シチズン時計株式会社 Electronic clock with calendar
JPS6045834B2 (en) * 1978-03-30 1985-10-12 セイコーエプソン株式会社 Feeding mechanism for date display components for watches
CH632128B (en) * 1979-09-07 Ebauches Sa CONTROL DEVICE FOR TWO STEP MOTORS IN AN ELECTRONIC CLOCK PART.
EP0048217A1 (en) * 1980-09-12 1982-03-24 Compagnie des Montres Longines, Francillon S.A. Electronic timepiece
JPS57110981A (en) * 1980-12-27 1982-07-10 Copal Co Ltd Time setting device for analog display watch
CH634713B (en) * 1981-07-09 Umberto Maglioli ELECTRONIC WATCH PART.
CH647382GA3 (en) * 1982-04-21 1985-01-31
JPS60109087U (en) * 1983-12-27 1985-07-24 シチズン時計株式会社 Gear train arrangement structure of a crystal clock
JPS61202186A (en) * 1985-03-05 1986-09-06 Seiko Instr & Electronics Ltd Electronic timepiece
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
JPS6222583U (en) * 1985-07-24 1987-02-10
CH661833GA3 (en) * 1985-12-18 1987-08-31
CH663512GA3 (en) * 1986-05-26 1987-12-31
CH665077GA3 (en) * 1986-10-15 1988-04-29
DE3890910T1 (en) * 1987-11-11 1989-12-21 Rolex Montres METHOD FOR PROGRAMMING THE PERMANENT CALENDAR OF A WATCH AND WATCH FOR THE APPLICATION OF THIS METHOD
CH672222B5 (en) * 1987-11-11 1990-05-15 Rolex Montres

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3227730A (en) * 1963-05-01 1966-01-04 Union Carbide Corp Stabilization of lactones
US3712046A (en) * 1971-05-24 1973-01-23 H Dill Rotating ring display
JPS559672B2 (en) * 1972-10-07 1980-03-11
FR2203108B3 (en) * 1972-10-13 1976-09-03 Grand Cap Cie Sa
JPS5627833B2 (en) * 1973-11-13 1981-06-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398832A (en) 1981-02-16 1983-08-16 Compagnie Des Montres Longines Francillon Sa Multifunction timepiece

Also Published As

Publication number Publication date
CH613837B (en)
GB2001187A (en) 1979-01-24
JPS5439666A (en) 1979-03-27
FR2394840A1 (en) 1979-01-12
DE2824990A1 (en) 1979-02-01
CH613837GA3 (en) 1979-10-31
DE2824990C2 (en) 1987-09-10
GB2001187B (en) 1982-01-06

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Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse