JPS5697896A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5697896A JPS5697896A JP16012679A JP16012679A JPS5697896A JP S5697896 A JPS5697896 A JP S5697896A JP 16012679 A JP16012679 A JP 16012679A JP 16012679 A JP16012679 A JP 16012679A JP S5697896 A JPS5697896 A JP S5697896A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- circuit part
- frequency
- oscillation
- temperature characteristics
- 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)
- Oscillators With Electromechanical Resonators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE: To improve time precision with simple constitution, by IC-implementing a circuit part, which obtains oscillation frequency temperature characteristics satisfying prescribed conditions by quantitative by detecting temperature, in the same body with an oscillation and frequency division driving circuit.
CONSTITUTION: With reset switch 5 open, temperature detecting circuit part 303 of one-chip IC generates binary data symmetric on a specific temperature between high and low temperature sides corresponding to a detected temperature and the signal is applied to logic circuit part 302 generating a compensation signal. Consequencly, circuit part 302 generates the compensation signal for obtaining frequency temperature characteristics satisfying expressions (I)W(III), and the compensation signal is applied to oscillation and frequency division driving circuit 301 together with binary data for the logical frequency adjustment of quartz oscillator 13 from fixed memory 31 via trimmer capacitor 16, etc., to perform the temperature compensation and frequency adjustment of oscillator 13 at the same time. This simple constitution which uses a combination of elements differing in temperature characteristics and requires no quartz oscillator, etc., of high performance in terms of temperature characteristics improves the time precision of the electronic watch.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16012679A JPS5697896A (en) | 1979-12-10 | 1979-12-10 | Electronic watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16012679A JPS5697896A (en) | 1979-12-10 | 1979-12-10 | Electronic watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5697896A true JPS5697896A (en) | 1981-08-06 |
Family
ID=15708423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16012679A Pending JPS5697896A (en) | 1979-12-10 | 1979-12-10 | Electronic watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5697896A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890192A (en) * | 1981-11-25 | 1983-05-28 | Toshiba Corp | Electronic clock |
| WO2003063335A1 (en) * | 2002-01-21 | 2003-07-31 | Citizen Watch Co., Ltd. | Temperature compensation type oscillator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49123076A (en) * | 1973-03-27 | 1974-11-25 | ||
| JPS5071362A (en) * | 1973-10-24 | 1975-06-13 |
-
1979
- 1979-12-10 JP JP16012679A patent/JPS5697896A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49123076A (en) * | 1973-03-27 | 1974-11-25 | ||
| JPS5071362A (en) * | 1973-10-24 | 1975-06-13 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890192A (en) * | 1981-11-25 | 1983-05-28 | Toshiba Corp | Electronic clock |
| JPH0359397B2 (en) * | 1981-11-25 | 1991-09-10 | Tokyo Shibaura Electric Co | |
| WO2003063335A1 (en) * | 2002-01-21 | 2003-07-31 | Citizen Watch Co., Ltd. | Temperature compensation type oscillator |
| US7583157B2 (en) | 2002-01-21 | 2009-09-01 | Citizen Holdings Co., Ltd. | Method of manufacturing a temperature compensated oscillator |
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