CH637803GA3 - - Google Patents
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- Publication number
- CH637803GA3 CH637803GA3 CH731579A CH731579A CH637803GA3 CH 637803G A3 CH637803G A3 CH 637803GA3 CH 731579 A CH731579 A CH 731579A CH 731579 A CH731579 A CH 731579A CH 637803G A3 CH637803G A3 CH 637803GA3
- Authority
- CH
- Switzerland
- Prior art keywords
- driving
- motor
- pulse
- pulse width
- load
- Prior art date
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
- G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step
Abstract
A load measuring device for a stepping motor of an analogue electronic timepiece having a stator, a rotor and a coil includes a pulse generator for producing a range of different pulse width normal driving pulses and a driving circuit for successively applying the driving pulses to the motor. A detector detects the rotation and non-rotation state of the rotor in response to the application of each driving pulse and a control circuit is responsive to the detection by the detector for controlling the application by the driving circuit of the minimum pulse width normal driving pulse capable of driving the motor. Each minimum pulse width driving pulse corresponds to the load on the motor at that time and an analyzer analyzes the pulse width of the driving pulses to thereby indicate the load on the motor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53112009A JPS5921493B2 (en) | 1978-09-12 | 1978-09-12 | Watch gear train load measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CH637803B CH637803B (en) | |
| CH637803GA3 true CH637803GA3 (en) | 1983-08-31 |
Family
ID=14575672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH731579A CH637803B (en) | 1978-09-12 | 1979-08-09 | DEVICE FOR MEASURING THE LOAD ON THE ROTOR OF A STEP MOTOR IN A CLOCK PART. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4315329A (en) |
| JP (1) | JPS5921493B2 (en) |
| CH (1) | CH637803B (en) |
| DE (1) | DE2936150C2 (en) |
| FR (1) | FR2436377A1 (en) |
| GB (1) | GB2030734B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5619473A (en) * | 1979-07-27 | 1981-02-24 | Citizen Watch Co Ltd | Electronic timepiece |
| JPS56158978A (en) * | 1980-05-13 | 1981-12-08 | Citizen Watch Co Ltd | Electronic watch |
| JPS56164984A (en) * | 1980-05-23 | 1981-12-18 | Seiko Instr & Electronics Ltd | Electronic watch |
| CH639524B (en) | 1981-02-16 | Longines Montres Comp D | MULTIFUNCTIONAL WATCH. | |
| JP3508444B2 (en) * | 1997-02-07 | 2004-03-22 | セイコーエプソン株式会社 | Control device for stepping motor, control method thereof, and timing device |
| JP2002365379A (en) * | 2001-06-11 | 2002-12-18 | Seiko Instruments Inc | Analog electronic clock |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5542356B2 (en) * | 1972-12-22 | 1980-10-30 | ||
| JPS5345575A (en) * | 1976-10-06 | 1978-04-24 | Seiko Epson Corp | Electronic wristwatch |
| JPS53132385A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
-
1978
- 1978-09-12 JP JP53112009A patent/JPS5921493B2/en not_active Expired
-
1979
- 1979-05-24 US US06/042,073 patent/US4315329A/en not_active Expired - Lifetime
- 1979-07-23 FR FR7918913A patent/FR2436377A1/en active Granted
- 1979-08-09 CH CH731579A patent/CH637803B/en unknown
- 1979-08-17 GB GB7928782A patent/GB2030734B/en not_active Expired
- 1979-09-07 DE DE2936150A patent/DE2936150C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2030734A (en) | 1980-04-10 |
| DE2936150C2 (en) | 1985-04-25 |
| FR2436377B1 (en) | 1984-01-27 |
| US4315329A (en) | 1982-02-09 |
| CH637803B (en) | |
| FR2436377A1 (en) | 1980-04-11 |
| JPS5921493B2 (en) | 1984-05-21 |
| DE2936150A1 (en) | 1980-03-20 |
| GB2030734B (en) | 1982-11-17 |
| JPS5539017A (en) | 1980-03-18 |
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