JPS51135454A - Frequency synthesizer - Google Patents

Frequency synthesizer

Info

Publication number
JPS51135454A
JPS51135454A JP50060353A JP6035375A JPS51135454A JP S51135454 A JPS51135454 A JP S51135454A JP 50060353 A JP50060353 A JP 50060353A JP 6035375 A JP6035375 A JP 6035375A JP S51135454 A JPS51135454 A JP S51135454A
Authority
JP
Japan
Prior art keywords
frequency synthesizer
systemdown
caused
protection
standard 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.)
Pending
Application number
JP50060353A
Other languages
Japanese (ja)
Inventor
Masaaki Sasada
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP50060353A priority Critical patent/JPS51135454A/en
Publication of JPS51135454A publication Critical patent/JPS51135454A/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
    • H03L7/14—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail
    • H03L7/146—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail by using digital means for generating the oscillator control signal
    • H03L7/148—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail by using digital means for generating the oscillator control signal said digital means comprising a counter or a divider

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:Protection of the system against systemdown caused by occasional disconnection of the standard signal.
JP50060353A 1975-05-20 1975-05-20 Frequency synthesizer Pending JPS51135454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50060353A JPS51135454A (en) 1975-05-20 1975-05-20 Frequency synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50060353A JPS51135454A (en) 1975-05-20 1975-05-20 Frequency synthesizer

Publications (1)

Publication Number Publication Date
JPS51135454A true JPS51135454A (en) 1976-11-24

Family

ID=13139695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50060353A Pending JPS51135454A (en) 1975-05-20 1975-05-20 Frequency synthesizer

Country Status (1)

Country Link
JP (1) JPS51135454A (en)

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