JPS5547479A - Electronic watch with temperature compensator - Google Patents

Electronic watch with temperature compensator

Info

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
Application number
JP12069578A
Other languages
Japanese (ja)
Inventor
Fuminori Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP12069578A priority Critical patent/JPS5547479A/en
Publication of JPS5547479A publication Critical patent/JPS5547479A/en
Pending legal-status Critical Current

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  • 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
JP12069578A 1978-09-30 1978-09-30 Electronic watch with temperature compensator Pending JPS5547479A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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