JPS6444122A - Digital temperature compensated oscillator - Google Patents

Digital temperature compensated oscillator

Info

Publication number
JPS6444122A
JPS6444122A JP20045387A JP20045387A JPS6444122A JP S6444122 A JPS6444122 A JP S6444122A JP 20045387 A JP20045387 A JP 20045387A JP 20045387 A JP20045387 A JP 20045387A JP S6444122 A JPS6444122 A JP S6444122A
Authority
JP
Japan
Prior art keywords
output
signal
vco
fed
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
JP20045387A
Other languages
Japanese (ja)
Inventor
Seiya Matsumura
Takashi Miyayama
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.)
Toyo Communication Equipment Co Ltd
Original Assignee
Toyo Communication Equipment 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 Toyo Communication Equipment Co Ltd filed Critical Toyo Communication Equipment Co Ltd
Priority to JP20045387A priority Critical patent/JPS6444122A/en
Publication of JPS6444122A publication Critical patent/JPS6444122A/en
Pending legal-status Critical Current

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  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To improve the temperature resolution and to reduce the power consumption by measuring an increment of a periodic time of a gate signal at each temperature by means of a measuring pulse with/without frequency division of a reference pulse. CONSTITUTION:An output of a voltage controlled oscillator(VCO)6 is supplied to a frequency divider 7 and the output of the frequency divider 7 is fed to a multiplexer(Mp)8. The Mp8 is switched by using signals A, B of a counter controller (Cc)9 and the output of the Mp8 is supplied to one input terminal of the OR 2. An output from a temperature sensor 1 is fed to the other input of the OR 2. The output of the OR 2 is supplied to a binary counter (Ct)3 and the output of the Ct3 is fed to a digital control circuit 4 and the Cc9. The Cc9 monitors the output of the Ct3 and outputs a signal switching input terminals D0-D3 and a signal clearing the Ct3. Moreover, the Cc9 outputs a control signal C to allow the circuit 4 to output a signal only including temperature information only to the VCO 6 via a D/A converter 5 to apply temperature compensation of the output of the VCO 6.
JP20045387A 1987-08-11 1987-08-11 Digital temperature compensated oscillator Pending JPS6444122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20045387A JPS6444122A (en) 1987-08-11 1987-08-11 Digital temperature compensated oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20045387A JPS6444122A (en) 1987-08-11 1987-08-11 Digital temperature compensated oscillator

Publications (1)

Publication Number Publication Date
JPS6444122A true JPS6444122A (en) 1989-02-16

Family

ID=16424555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20045387A Pending JPS6444122A (en) 1987-08-11 1987-08-11 Digital temperature compensated oscillator

Country Status (1)

Country Link
JP (1) JPS6444122A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587584A (en) * 1981-07-07 1983-01-17 Citizen Watch Co Ltd Electronic timepiece with temperature compensation
JPS58223088A (en) * 1982-06-18 1983-12-24 Citizen Watch Co Ltd Electronic time piece with temperature compensation
JPS6273130A (en) * 1985-09-27 1987-04-03 Citizen Watch Co Ltd Thermistor thermometer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587584A (en) * 1981-07-07 1983-01-17 Citizen Watch Co Ltd Electronic timepiece with temperature compensation
JPS58223088A (en) * 1982-06-18 1983-12-24 Citizen Watch Co Ltd Electronic time piece with temperature compensation
JPS6273130A (en) * 1985-09-27 1987-04-03 Citizen Watch Co Ltd Thermistor thermometer

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