JPS6444122A - Digital temperature compensated oscillator - Google Patents
Digital temperature compensated oscillatorInfo
- 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
Links
Landscapes
- 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.
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)
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 |
-
1987
- 1987-08-11 JP JP20045387A patent/JPS6444122A/en active Pending
Patent Citations (3)
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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