GB2001187B - Electronic watch sith mechanical display - Google Patents
Electronic watch sith mechanical displayInfo
- Publication number
- GB2001187B GB2001187B GB7826762A GB7826762A GB2001187B GB 2001187 B GB2001187 B GB 2001187B GB 7826762 A GB7826762 A GB 7826762A GB 7826762 A GB7826762 A GB 7826762A GB 2001187 B GB2001187 B GB 2001187B
- Authority
- GB
- United Kingdom
- Prior art keywords
- display
- electronic watch
- motors
- corrected
- stepping motor
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Electric Clocks (AREA)
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. <IMAGE>
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 |
---|---|
GB2001187A GB2001187A (en) | 1979-01-24 |
GB2001187B true GB2001187B (en) | 1982-01-06 |
Family
ID=4324267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7826762A Expired GB2001187B (en) | 1977-06-14 | 1978-06-13 | Electronic watch sith 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) |
Families Citing this family (17)
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 |
CH639524B (en) * | 1981-02-16 | Longines Montres Comp D | MULTIFUNCTIONAL 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)
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 | ||
DE2351403A1 (en) * | 1972-10-13 | 1974-04-25 | Grand Cap Co S A | CLOCK CHRONOGRAPH |
JPS5627833B2 (en) * | 1973-11-13 | 1981-06-27 |
-
1977
- 1977-06-14 CH CH738277A patent/CH613837B/en unknown
-
1978
- 1978-06-07 DE DE19782824990 patent/DE2824990A1/en active Granted
- 1978-06-09 FR FR7818476A patent/FR2394840A1/en active Granted
- 1978-06-13 GB GB7826762A patent/GB2001187B/en not_active Expired
- 1978-06-14 JP JP7101578A patent/JPS5439666A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2394840A1 (en) | 1979-01-12 |
CH613837GA3 (en) | 1979-10-31 |
FR2394840B1 (en) | 1981-04-30 |
DE2824990A1 (en) | 1979-02-01 |
GB2001187A (en) | 1979-01-24 |
DE2824990C2 (en) | 1987-09-10 |
JPS5439666A (en) | 1979-03-27 |
CH613837B (en) |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19970613 |