JPS5576978A - Temperature compensating circuit for electronic watch - Google Patents
Temperature compensating circuit for electronic watchInfo
- Publication number
- JPS5576978A JPS5576978A JP15090878A JP15090878A JPS5576978A JP S5576978 A JPS5576978 A JP S5576978A JP 15090878 A JP15090878 A JP 15090878A JP 15090878 A JP15090878 A JP 15090878A JP S5576978 A JPS5576978 A JP S5576978A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- temperature
- circuit
- frequency
- standard
- 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)
- Electric Clocks (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
PURPOSE: To accurately adjust the frequency of an electronic watch regardless of the period of detected temperature by a temperature compensating circuit by providing a frequency divider between a circuit for producing a pulse signal in response to a temperature detection signal and an arithmetic circuit for adding or subtracting the standard signal by frequency correction signal.
CONSTITUTION: When a temperature detector 8 detects, for example, temperature at every one minute, a pulse signal output circuit 12 generates pulse signals of the number required for correcting the temperature characteristics of a crystal oscillator 2. The pulse signals are then divided by a third frequency divider 14, and applied to an arithmetic circuit 4. The arithmetic circuit 4 adds or subtracts the standard wime signal by frequency correction signal or both adds and subtracts them to thereby correct the standard signal. The corrected signal is divided by a frequency divider 6 to thus become counting signal of 1Hz.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15090878A JPS5576978A (en) | 1978-12-05 | 1978-12-05 | Temperature compensating circuit for electronic watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15090878A JPS5576978A (en) | 1978-12-05 | 1978-12-05 | Temperature compensating circuit for electronic watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5576978A true JPS5576978A (en) | 1980-06-10 |
Family
ID=15507006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15090878A Pending JPS5576978A (en) | 1978-12-05 | 1978-12-05 | Temperature compensating circuit for electronic watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5576978A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001888A1 (en) * | 1979-12-20 | 1981-07-09 | Ricoh Watch | Linearizing circuit and electronic time piece using the same |
| US4380745A (en) * | 1980-11-07 | 1983-04-19 | The United States Of America As Represented By The Secretary Of The Navy | Digitally controlled temperature compensated oscillator system |
-
1978
- 1978-12-05 JP JP15090878A patent/JPS5576978A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001888A1 (en) * | 1979-12-20 | 1981-07-09 | Ricoh Watch | Linearizing circuit and electronic time piece using the same |
| US4464061A (en) * | 1979-12-20 | 1984-08-07 | Ricoh Watch Co., Ltd. | Linearizer circuit and an electronic watch incorporating same |
| US4380745A (en) * | 1980-11-07 | 1983-04-19 | The United States Of America As Represented By The Secretary Of The Navy | Digitally controlled temperature compensated oscillator system |
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