JPS5469052A - Frequency discriminating device - Google Patents

Frequency discriminating device

Info

Publication number
JPS5469052A
JPS5469052A JP13592377A JP13592377A JPS5469052A JP S5469052 A JPS5469052 A JP S5469052A JP 13592377 A JP13592377 A JP 13592377A JP 13592377 A JP13592377 A JP 13592377A JP S5469052 A JPS5469052 A JP S5469052A
Authority
JP
Japan
Prior art keywords
signal
frequency
output
circuit
difference
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
JP13592377A
Other languages
Japanese (ja)
Other versions
JPS5937902B2 (en
Inventor
Masahiro Watanabe
Mitsuaki Kamiharashi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP52135923A priority Critical patent/JPS5937902B2/en
Publication of JPS5469052A publication Critical patent/JPS5469052A/en
Publication of JPS5937902B2 publication Critical patent/JPS5937902B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D13/00—Circuits for comparing the phase or frequency of two mutually-independent oscillations

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manipulation Of Pulses (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To offset the temperature change and the secular change by providing the difference circuit with the frequency discriminating circuits formed in the same constitution, and thus to ensure the steady AFC action as well as to realize easy integration. CONSTITUTION:Output signal fQ1 and fQ2 of 1st and 2nd D-type FF5 and 6 are supplied to 1st and 2nd monostable multivibrator 7 and 8 to produce the output which becomes ''1'' in a fixed time tau from the rise or fall of signal fQ1 and fQ2 and becomes ''0'' at other time. The output is applied to 1st and 2nd integrating circuit 9 and 10 to be integrated. After this, the difference is secured through difference circuit 11 between two DC components in order to obtain the DC signal which is proportional to deviation amount + or - fM to central value fM of the frequency of frequency discriminated signal SM, i.e., the data terminal input frequency of FF5 and 6. This DC signal can be used as the AFC signal. And the frequency discriminating circuits of pulse counting system, which are formed with multivibrator 7 and 8 plus circuit 9 and 10, are obtained in the same constitution.
JP52135923A 1977-11-11 1977-11-11 frequency discriminator Expired JPS5937902B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52135923A JPS5937902B2 (en) 1977-11-11 1977-11-11 frequency discriminator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52135923A JPS5937902B2 (en) 1977-11-11 1977-11-11 frequency discriminator

Publications (2)

Publication Number Publication Date
JPS5469052A true JPS5469052A (en) 1979-06-02
JPS5937902B2 JPS5937902B2 (en) 1984-09-12

Family

ID=15163001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52135923A Expired JPS5937902B2 (en) 1977-11-11 1977-11-11 frequency discriminator

Country Status (1)

Country Link
JP (1) JPS5937902B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143834A (en) * 1984-07-30 1986-03-03 Yokogawa Hewlett Packard Ltd Signal generator
JP2013034119A (en) * 2011-08-02 2013-02-14 Mitsubishi Electric Corp Phase comparison device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143834A (en) * 1984-07-30 1986-03-03 Yokogawa Hewlett Packard Ltd Signal generator
JP2013034119A (en) * 2011-08-02 2013-02-14 Mitsubishi Electric Corp Phase comparison device

Also Published As

Publication number Publication date
JPS5937902B2 (en) 1984-09-12

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