JPS5766384A - Oscillation circuit for electronic time piece - Google Patents

Oscillation circuit for electronic time piece

Info

Publication number
JPS5766384A
JPS5766384A JP55141959A JP14195980A JPS5766384A JP S5766384 A JPS5766384 A JP S5766384A JP 55141959 A JP55141959 A JP 55141959A JP 14195980 A JP14195980 A JP 14195980A JP S5766384 A JPS5766384 A JP S5766384A
Authority
JP
Japan
Prior art keywords
frequency
output
oscillation circuit
circuit
frequency oscillation
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
JP55141959A
Other languages
Japanese (ja)
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 Holdings Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
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 Holdings Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Priority to JP55141959A priority Critical patent/JPS5766384A/en
Priority to US06/269,296 priority patent/US4427302A/en
Priority to GB8117446A priority patent/GB2080986B/en
Publication of JPS5766384A publication Critical patent/JPS5766384A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H03L7/0991—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider
    • H03L7/0992—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider comprising a counter or a frequency divider
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators

Abstract

PURPOSE:To obtain a crystal clock with less consumption of electric power and high accuracy by controlling the oscillation frequency of a low frequency oscillation circuit with the output from a high frequency oscillation circuit oscillating intermittently. CONSTITUTION:A high frequency oscillation circuit 1 oscillates intermittently by the output from an intermittent control circuit 9. The output fH from the high frequency oscillation circuit 1 is compared in phase as at 30 with the signal which frequency-diviced the output from a low frequency oscillation circuit 2 as at 4a, being inputted to a frequency control circuit 80. Then, the output fH changes over the oscillation frequency by turning ON or OFF transistors 2h and 2i of the low frequency oscillation circuit 2. The output from the frequency-dividing circuit 4a is frequency- divided again as at 4b and is added to a motor driving circuit 5 to activate a pulse motor 6.
JP55141959A 1980-06-06 1980-10-13 Oscillation circuit for electronic time piece Pending JPS5766384A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55141959A JPS5766384A (en) 1980-10-13 1980-10-13 Oscillation circuit for electronic time piece
US06/269,296 US4427302A (en) 1980-06-06 1981-06-01 Timekeeping signal source for an electronic timepiece
GB8117446A GB2080986B (en) 1980-06-06 1981-06-08 Timekeeping signal source for an electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55141959A JPS5766384A (en) 1980-10-13 1980-10-13 Oscillation circuit for electronic time piece

Publications (1)

Publication Number Publication Date
JPS5766384A true JPS5766384A (en) 1982-04-22

Family

ID=15304098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55141959A Pending JPS5766384A (en) 1980-06-06 1980-10-13 Oscillation circuit for electronic time piece

Country Status (1)

Country Link
JP (1) JPS5766384A (en)

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