JPS573071A - Oscillating circuit for electronic watch - Google Patents

Oscillating circuit for electronic watch

Info

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
Application number
JP7621280A
Other languages
Japanese (ja)
Other versions
JPS6211806B2 (en
Inventor
Shinichi Watanabe
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 JP7621280A priority Critical patent/JPS573071A/en
Publication of JPS573071A publication Critical patent/JPS573071A/en
Publication of JPS6211806B2 publication Critical patent/JPS6211806B2/ja
Granted legal-status Critical Current

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.
JP7621280A 1980-06-06 1980-06-06 Oscillating circuit for electronic watch Granted JPS573071A (en)

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)

Also Published As

Publication number Publication date
JPS6211806B2 (en) 1987-03-14

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