JPS5632809A - Correcting unit for frequency - Google Patents

Correcting unit for frequency

Info

Publication number
JPS5632809A
JPS5632809A JP10931779A JP10931779A JPS5632809A JP S5632809 A JPS5632809 A JP S5632809A JP 10931779 A JP10931779 A JP 10931779A JP 10931779 A JP10931779 A JP 10931779A JP S5632809 A JPS5632809 A JP S5632809A
Authority
JP
Japan
Prior art keywords
frequency
temperature
terminal
output
unit
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
JP10931779A
Other languages
Japanese (ja)
Other versions
JPS6131641B2 (en
Inventor
Tetsuo Konno
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.)
Seikosha KK
Original Assignee
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 Seikosha KK filed Critical Seikosha KK
Priority to JP10931779A priority Critical patent/JPS5632809A/en
Publication of JPS5632809A publication Critical patent/JPS5632809A/en
Publication of JPS6131641B2 publication Critical patent/JPS6131641B2/ja
Granted 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
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/026—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using a memory for digitally storing correction values
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/027—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using frequency conversion means which is variable with temperature, e.g. mixer, frequency divider, pulse add/substract logic circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/028—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only of generators comprising piezoelectric resonators

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To make it possible to correct a frequency with high precision by use of a single oscillator by calculating a fluctuating frequency from a difference in temperature and coefficient by use of a quartz oscillator with temperature frequency characteristics represented by a curve of degree (n) and then by adding or subtracting a pulse to and from a fixed frequency-dividing stage for the correction. CONSTITUTION:On the basis of the characteristic measured value of an AT cut quartz oscillator, measuring instrument 1 determines each coefficient ai and then stores it in memory unit 2. On receiving a periodic timer output from terminal (c) of control circuit 4, temperature measuring instrument 3 measures temperature difference DELTAT between a set temperature and a temperature in a correction. On the basis of temperature difference DELTAT in unit 3 and coefficient ai stored in unit 2, arithmetic circuit 5 performs fixed arithmetic for obtaining fluctuations of the frequency and sends a code output for the determination between addition and subtraction of a correction pulse to terminal (a) and the absolute value of variation DELTAf to terminal (b) respectively. This b-terminal output is written into preset down counter 6 and through the operation of control circuit 4, pulse adding-subtracting operation is performed by use of the a-terminal output and the variation output of counter 6, thereby supplying clocking unit 22 with a corrected time display input by way of frequency-dividing stage 21.
JP10931779A 1979-08-28 1979-08-28 Correcting unit for frequency Granted JPS5632809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10931779A JPS5632809A (en) 1979-08-28 1979-08-28 Correcting unit for frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10931779A JPS5632809A (en) 1979-08-28 1979-08-28 Correcting unit for frequency

Publications (2)

Publication Number Publication Date
JPS5632809A true JPS5632809A (en) 1981-04-02
JPS6131641B2 JPS6131641B2 (en) 1986-07-22

Family

ID=14507144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10931779A Granted JPS5632809A (en) 1979-08-28 1979-08-28 Correcting unit for frequency

Country Status (1)

Country Link
JP (1) JPS5632809A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62294331A (en) * 1985-12-03 1987-12-21 Radio Res Lab High speed frequency switching synthesizer
JP2008275996A (en) * 2007-05-01 2008-11-13 Fujifilm Corp Light guide member

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313470A (en) * 1976-06-30 1978-02-07 Seiko Epson Corp Electronic timepiece

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313470A (en) * 1976-06-30 1978-02-07 Seiko Epson Corp Electronic timepiece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62294331A (en) * 1985-12-03 1987-12-21 Radio Res Lab High speed frequency switching synthesizer
JP2008275996A (en) * 2007-05-01 2008-11-13 Fujifilm Corp Light guide member

Also Published As

Publication number Publication date
JPS6131641B2 (en) 1986-07-22

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