JPS54145168A - Watch apparatus - Google Patents
Watch apparatusInfo
- Publication number
- JPS54145168A JPS54145168A JP5227278A JP5227278A JPS54145168A JP S54145168 A JPS54145168 A JP S54145168A JP 5227278 A JP5227278 A JP 5227278A JP 5227278 A JP5227278 A JP 5227278A JP S54145168 A JPS54145168 A JP S54145168A
- Authority
- JP
- Japan
- Prior art keywords
- stop
- wheel train
- train mechanism
- counter
- hands
- 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.)
- Pending
Links
Landscapes
- Electromechanical Clocks (AREA)
Abstract
PURPOSE: To prevent the read miss of the time such as of a hand type wristwatch by detecting and announcing the driving stop of the wheel train mechanism which operates the hands according to the revolutions of a step motor.
CONSTITUTION: While a wheel train mechanism 5 is normally operating, the signal is applied as a reset signal to the counter 7a of a driving stop detecting circuit 7 at a rate of once a minute from the wheel train mechanism 5 and therefore, no carry signal is outputted from a counter 7a, hence a light emitting diode 6a is not lighted. When the drop of the voltage of a supply battery causes the step motor to stop or the the stop of driving of the wheel train mechanism 5 owing to its trouble causes the hands to stop operating, the carry signal is generated from the counter 7a and therefore an FF 7b is set and the light emitting diode 6a of the display part emits light. Thereupon, the user knows that the hands are not moving, thus an error in reading the current time does not occur.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5227278A JPS54145168A (en) | 1978-05-02 | 1978-05-02 | Watch apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5227278A JPS54145168A (en) | 1978-05-02 | 1978-05-02 | Watch apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54145168A true JPS54145168A (en) | 1979-11-13 |
Family
ID=12910134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5227278A Pending JPS54145168A (en) | 1978-05-02 | 1978-05-02 | Watch apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54145168A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57125873A (en) * | 1981-01-30 | 1982-08-05 | Seikosha Co Ltd | Timer |
-
1978
- 1978-05-02 JP JP5227278A patent/JPS54145168A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57125873A (en) * | 1981-01-30 | 1982-08-05 | Seikosha Co Ltd | Timer |
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