JPS5485766A - High accuracy standard signal circuit for watches - Google Patents

High accuracy standard signal circuit for watches

Info

Publication number
JPS5485766A
JPS5485766A JP15378577A JP15378577A JPS5485766A JP S5485766 A JPS5485766 A JP S5485766A JP 15378577 A JP15378577 A JP 15378577A JP 15378577 A JP15378577 A JP 15378577A JP S5485766 A JPS5485766 A JP S5485766A
Authority
JP
Japan
Prior art keywords
circuit
high accuracy
outputs
indicates
interrupt
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
JP15378577A
Other languages
Japanese (ja)
Inventor
Yoshikazu Akaha
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP15378577A priority Critical patent/JPS5485766A/en
Publication of JPS5485766A publication Critical patent/JPS5485766A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To obtain high accuracy readily through simple adjustment by subjecting the pulses corresponding to beat output frequencies to interrupt temperature compensation during operation of a timer in the standard signal circuit for watches. CONSTITUTION:A circuit 3 outputs the beat signals of the outputs of crystal oscillators 1, 2. A frequency divider 4 divides down the output frequency of the circuit 3. A timer 5 is reset and started by the outputs of the frequency divider 4. A pulse interrupt circuit 7 directs the pulses corresponding to the output frequencies of the circuit 3 to a time display mechanism 10 via interrupt divider 9 through a circuit 8. The axis of ordinate of the graph indicates frequency change rates and the axis of abscissa temperatures. The curves 11, 12 respectively indicate the temperature characteristics of crystal oscillators 1, 2. The curve 13 indicates the temperature changes of the beat output frequencies of the circuit 3 and 14 indicates the squared curves of 13. 15 is the curve of 14 multiplied by a coefficient and 16 is the sum of 15 and 11, becoming flat characteristics. Hence, temperature compensation is accomplished and high accuracy readily obtained.
JP15378577A 1977-12-21 1977-12-21 High accuracy standard signal circuit for watches Pending JPS5485766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15378577A JPS5485766A (en) 1977-12-21 1977-12-21 High accuracy standard signal circuit for watches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15378577A JPS5485766A (en) 1977-12-21 1977-12-21 High accuracy standard signal circuit for watches

Publications (1)

Publication Number Publication Date
JPS5485766A true JPS5485766A (en) 1979-07-07

Family

ID=15570080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15378577A Pending JPS5485766A (en) 1977-12-21 1977-12-21 High accuracy standard signal circuit for watches

Country Status (1)

Country Link
JP (1) JPS5485766A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56104504A (en) * 1980-01-10 1981-08-20 Suisse Horlogerie Oscillator and method of manufacturing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56104504A (en) * 1980-01-10 1981-08-20 Suisse Horlogerie Oscillator and method of manufacturing same

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