JPS5487275A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5487275A JPS5487275A JP15470477A JP15470477A JPS5487275A JP S5487275 A JPS5487275 A JP S5487275A JP 15470477 A JP15470477 A JP 15470477A JP 15470477 A JP15470477 A JP 15470477A JP S5487275 A JPS5487275 A JP S5487275A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signals
- pulses
- output
- watch
- 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
Abstract
PURPOSE: To reduce an operational error, while keeping the circuit from becoming complex, by feeding the signals of 2m Hx signals from an oscillating frequency dividing circuit to a 10D Hz generating circuit through a gate circuit whichdoes or does not start the counting operation of a stop-watch.
CONSTITUTION: The signals of the oscillatory frequency of 2nHz from a quartz oscillator 1 are subjected to frequency division by a frequency dividing circuit 2, and the output signals 13 of 2mHz are fed through a gate circuit 4 to a 10DHz generating circuit 5. In case this circuit 5 is a system, by which the input pulses are counted to feed one output pulse for a certain number of pulses, if the input is 128 Hz and the output is 10 Hz, this 10 Hz can be generated by the combination, in which the 128 Hz 13 is subjected to frequency division to generate one output pulse for each 12 or 13 pulses. If the switch of a stop-watch counting start of the switch group 10 is turned on, 1 is displayed in the unit of 1/10 second as accurately as possible.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15470477A JPS5487275A (en) | 1977-12-22 | 1977-12-22 | Electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15470477A JPS5487275A (en) | 1977-12-22 | 1977-12-22 | Electronic watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5487275A true JPS5487275A (en) | 1979-07-11 |
Family
ID=15590121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15470477A Pending JPS5487275A (en) | 1977-12-22 | 1977-12-22 | Electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5487275A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008170197A (en) * | 2007-01-10 | 2008-07-24 | Toyama Sumitomo Denko Kk | Foreign matter detector for metal porous object, and metal porous object through foreign matter detection process |
-
1977
- 1977-12-22 JP JP15470477A patent/JPS5487275A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008170197A (en) * | 2007-01-10 | 2008-07-24 | Toyama Sumitomo Denko Kk | Foreign matter detector for metal porous object, and metal porous object through foreign matter detection process |
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