JPS5547479A - Electronic watch with temperature compensator - Google Patents
Electronic watch with temperature compensatorInfo
- Publication number
- JPS5547479A JPS5547479A JP12069578A JP12069578A JPS5547479A JP S5547479 A JPS5547479 A JP S5547479A JP 12069578 A JP12069578 A JP 12069578A JP 12069578 A JP12069578 A JP 12069578A JP S5547479 A JPS5547479 A JP S5547479A
- Authority
- JP
- Japan
- Prior art keywords
- oscillator
- frequency
- beat
- signal
- temperature
- 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
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE: To enable compensating of temperature in high accuracy by using a signal front from first oscillator at delay side normally and conducting an operation of using a signal from second oscillator at lead side for predetermined period in number proportional to the differential frequency.
CONSTITUTION: A detector 13 detects the moment that the phase difference between a first oscillator A generating slightly lower frequency and a second oscillator B generating slightly higher frequency at different top temperature in temperature characteristics from the first crystal vibrator 1 to feed the number of beats during certain period T1 to a controller 12 so as to move a forcible synchronizer 11 during T2 seconds from the moment of the beat to thereby oscillate the oscillator A at frequency f2. In this meantime, the frequencies of both the output signals P1 and P2 are equal to f2 to detect no beat. Therefore, the controller 12 receives the signal P4 of a memory 14 as beat. In the residual period the oscillator A oscillator A oscillates at frequency f1 so that the mean frequency becomes constant.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12069578A JPS5547479A (en) | 1978-09-30 | 1978-09-30 | Electronic watch with temperature compensator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12069578A JPS5547479A (en) | 1978-09-30 | 1978-09-30 | Electronic watch with temperature compensator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5547479A true JPS5547479A (en) | 1980-04-03 |
Family
ID=14792676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12069578A Pending JPS5547479A (en) | 1978-09-30 | 1978-09-30 | Electronic watch with temperature compensator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5547479A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4325036A (en) * | 1979-06-01 | 1982-04-13 | Kabushiki Kaisha Daini Seikosha | Temperature compensating circuit |
JPH0235797A (en) * | 1988-07-26 | 1990-02-06 | Tdk Corp | Multilayer-type radio wave absorber and radio wave anechoic chamber composed of said wave absorber |
-
1978
- 1978-09-30 JP JP12069578A patent/JPS5547479A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4325036A (en) * | 1979-06-01 | 1982-04-13 | Kabushiki Kaisha Daini Seikosha | Temperature compensating circuit |
JPH0235797A (en) * | 1988-07-26 | 1990-02-06 | Tdk Corp | Multilayer-type radio wave absorber and radio wave anechoic chamber composed of said wave absorber |
US4972191A (en) * | 1988-07-26 | 1990-11-20 | Tdk Corporation | Wave absorber, and an anechoic chamber using the same |
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