JPS5380277A - Electronic wristwatch - Google Patents
Electronic wristwatchInfo
- Publication number
- JPS5380277A JPS5380277A JP15672176A JP15672176A JPS5380277A JP S5380277 A JPS5380277 A JP S5380277A JP 15672176 A JP15672176 A JP 15672176A JP 15672176 A JP15672176 A JP 15672176A JP S5380277 A JPS5380277 A JP S5380277A
- Authority
- JP
- Japan
- Prior art keywords
- electronic wristwatch
- reduction
- electric power
- oscillation circuit
- step 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.)
- Granted
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Control Of Stepping Motors (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Electric Clocks (AREA)
Abstract
PURPOSE:To make current consumption extra low and prolong life through reduction of electric power by a step motor and a crystal oscillation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15672176A JPS5380277A (en) | 1976-12-25 | 1976-12-25 | Electronic wristwatch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15672176A JPS5380277A (en) | 1976-12-25 | 1976-12-25 | Electronic wristwatch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5380277A true JPS5380277A (en) | 1978-07-15 |
| JPS6115379B2 JPS6115379B2 (en) | 1986-04-23 |
Family
ID=15633874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15672176A Granted JPS5380277A (en) | 1976-12-25 | 1976-12-25 | Electronic wristwatch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5380277A (en) |
-
1976
- 1976-12-25 JP JP15672176A patent/JPS5380277A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6115379B2 (en) | 1986-04-23 |
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