JPS5570780A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5570780A JPS5570780A JP14479578A JP14479578A JPS5570780A JP S5570780 A JPS5570780 A JP S5570780A JP 14479578 A JP14479578 A JP 14479578A JP 14479578 A JP14479578 A JP 14479578A JP S5570780 A JPS5570780 A JP S5570780A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- oscillator
- oscillation
- requiring
- matching
- 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
- Electric Clocks (AREA)
Abstract
PURPOSE: To offer the electronic watch with high accuracy and without requiring the matching of oscillator frequency, by using the thickness slide crystal oscillator of AT cut having high resonant frequency and variable frequency divider.
CONSTITUTION: The output of the oscillation circuit 1 using AT cut thickness slide oscillator 100W50μm thick in the resonant frequency of 15W34MHz formed with the photolithography method, is frequency divided 9 with the frequency dividing ratio stored 10 with rhe detection 4 of the reference period signal to form the reference signal of watch. Thus, the deterioration in the frequency versus temperature performance due to parassitic oscillation and the lowering in the sharpness of resonance can be avoided, and the oscillation circuit with high accuracy, several seconds in a year, and without requiring oscillation frequency matching can be obtained by using the oscillator with good performance and small size.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14479578A JPS5570780A (en) | 1978-11-22 | 1978-11-22 | Electronic watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14479578A JPS5570780A (en) | 1978-11-22 | 1978-11-22 | Electronic watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5570780A true JPS5570780A (en) | 1980-05-28 |
Family
ID=15370622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14479578A Pending JPS5570780A (en) | 1978-11-22 | 1978-11-22 | Electronic watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5570780A (en) |
-
1978
- 1978-11-22 JP JP14479578A patent/JPS5570780A/en active Pending
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