JPS573071A - Oscillating circuit for electronic watch - Google Patents
Oscillating circuit for electronic watchInfo
- Publication number
- JPS573071A JPS573071A JP7621280A JP7621280A JPS573071A JP S573071 A JPS573071 A JP S573071A JP 7621280 A JP7621280 A JP 7621280A JP 7621280 A JP7621280 A JP 7621280A JP S573071 A JPS573071 A JP S573071A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- oscillating circuit
- frequency oscillating
- output
- signal
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G7/00—Synchronisation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE:To cause dependency of the frequency accuracy of a low frequency oscillating circuit upon the accuracy of a high frequency oscillating circuit by comparing the phases of the high frequency oscillating circuit and the low frequency oscillating circuit, and selectively controlling the frequency of the low frequency oscillating circuit stepwise in accordance with the phase signal thereof. CONSTITUTION:The output signal of a low frequency oscillating circuit 2 is divided down to a 1-second signal fs by frequency dividing circuits 4a, 4b, and the time is displayed by a motor driving circuit 5 and a pulse motor 6. The output of the circuit 4a and the output of a high frequency oscillating circuit 1 are inputted to a phase comparator 3, and the on and off of the transistors 2i, 2j of the circuit 2 are controlled by the output of a T type FF, so that the oscillation frequency of the circuit 2 is changed over to 2 stages. As a result, the output signal fL1 of the circuit 2 is phase-locked within 1 pulse of the high frequency signal fH.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7621280A JPS573071A (en) | 1980-06-06 | 1980-06-06 | Oscillating circuit for electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7621280A JPS573071A (en) | 1980-06-06 | 1980-06-06 | Oscillating circuit for electronic watch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS573071A true JPS573071A (en) | 1982-01-08 |
JPS6211806B2 JPS6211806B2 (en) | 1987-03-14 |
Family
ID=13598862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7621280A Granted JPS573071A (en) | 1980-06-06 | 1980-06-06 | Oscillating circuit for electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS573071A (en) |
-
1980
- 1980-06-06 JP JP7621280A patent/JPS573071A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6211806B2 (en) | 1987-03-14 |
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