JPS5485775A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5485775A JPS5485775A JP15396277A JP15396277A JPS5485775A JP S5485775 A JPS5485775 A JP S5485775A JP 15396277 A JP15396277 A JP 15396277A JP 15396277 A JP15396277 A JP 15396277A JP S5485775 A JPS5485775 A JP S5485775A
- Authority
- JP
- Japan
- Prior art keywords
- time
- frequency
- reset
- error
- frequency dividing
- 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 eliminate obstracles for high precision designing such as frequency diviation due to aging of resonator and part of frequency fluctuations due to temperature changes, by correcting the second pulse output besides normallizing the time with the time announcement signal.
CONSTITUTION: At the onset of time announcement signal, namely, at the just time, the second and minute counter parts of watch part 6 and a frequency dividing part 5 are reset, and the time error is normalized. At this time, the errors at each stage of second and minute counters and frequency dividing part 8 with respect to the just time are detected in a detecting part 10, and when the output from the detecting part 3 is obtained, the errors, time announcement, and the time information with respect to the previous time announcement are sent into an arithmetic part 11 to be converted into frequency divided error in one second, for instance, then a reset pulse width corresponding to the error is provided at a control part 9 to reset the frequency dividing part. Thus, the second pulse or pluse interval is corrected, so that correct 1-second period may be sent out.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15396277A JPS5485775A (en) | 1977-12-20 | 1977-12-20 | Electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15396277A JPS5485775A (en) | 1977-12-20 | 1977-12-20 | Electronic watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5485775A true JPS5485775A (en) | 1979-07-07 |
Family
ID=15573865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15396277A Pending JPS5485775A (en) | 1977-12-20 | 1977-12-20 | Electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5485775A (en) |
-
1977
- 1977-12-20 JP JP15396277A patent/JPS5485775A/en active Pending
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