JPS5477165A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5477165A JPS5477165A JP14464777A JP14464777A JPS5477165A JP S5477165 A JPS5477165 A JP S5477165A JP 14464777 A JP14464777 A JP 14464777A JP 14464777 A JP14464777 A JP 14464777A JP S5477165 A JPS5477165 A JP S5477165A
- Authority
- JP
- Japan
- Prior art keywords
- step motor
- fed
- drive pulses
- detecting
- circuit
- 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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14464777A JPS5477165A (en) | 1977-12-02 | 1977-12-02 | Electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14464777A JPS5477165A (en) | 1977-12-02 | 1977-12-02 | Electronic watch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5477165A true JPS5477165A (en) | 1979-06-20 |
JPS618392B2 JPS618392B2 (ja) | 1986-03-13 |
Family
ID=15366927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14464777A Granted JPS5477165A (en) | 1977-12-02 | 1977-12-02 | Electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5477165A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56111485A (en) * | 1979-09-10 | 1981-09-03 | Berney Sa Jean Claude | Watch |
JPS5866090A (ja) * | 1981-10-15 | 1983-04-20 | Seikosha Co Ltd | 電子時計 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6324529Y2 (ja) * | 1984-12-28 | 1988-07-05 | ||
US5889734A (en) * | 1994-04-06 | 1999-03-30 | Citizen Watch Co., Ltd. | Electronic timepiece |
-
1977
- 1977-12-02 JP JP14464777A patent/JPS5477165A/ja active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56111485A (en) * | 1979-09-10 | 1981-09-03 | Berney Sa Jean Claude | Watch |
JPH0118398B2 (ja) * | 1979-09-10 | 1989-04-05 | Ebauchesfabrik Eta Ag | |
JPS5866090A (ja) * | 1981-10-15 | 1983-04-20 | Seikosha Co Ltd | 電子時計 |
JPS6260033B2 (ja) * | 1981-10-15 | 1987-12-14 | Seikosha Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS618392B2 (ja) | 1986-03-13 |
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