JPS5772430A - Phase synchronizng detecting circuit - Google Patents

Phase synchronizng detecting circuit

Info

Publication number
JPS5772430A
JPS5772430A JP55148923A JP14892380A JPS5772430A JP S5772430 A JPS5772430 A JP S5772430A JP 55148923 A JP55148923 A JP 55148923A JP 14892380 A JP14892380 A JP 14892380A JP S5772430 A JPS5772430 A JP S5772430A
Authority
JP
Japan
Prior art keywords
phase
output
signals
circuit
inputted
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
JP55148923A
Other languages
Japanese (ja)
Inventor
Koji Shigeta
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 JP55148923A priority Critical patent/JPS5772430A/en
Publication of JPS5772430A publication Critical patent/JPS5772430A/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

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To perform the phase synchronizing detection easily without malfunctions, by inserting a monostable multivibrator having a function which controls the transition of a signal to optionally vary the duty ratio of an output signal. CONSTITUTION:Even if two signals having different duty ratios are inputted in the same frequency and the same phase (region III), a monostable multivibrator 5 outputs signals A' and B' of the same phase in 1:1 duty ratio, and thses signals are inputted to an exclusive OR circuit 1, and an output L is outputted because of inputs of the same logical level. This output passes through an integrating circuit 2 and is compared with a reference voltage Vr by a boltage comparator 3 and has the synchronizing state detected. If input signals A and B having different frequencies as a region II, H and L are outputted alternately to the output of the exclusive OR circuit 1, and therefore, step out is detected by the voltage comparator 3.
JP55148923A 1980-10-23 1980-10-23 Phase synchronizng detecting circuit Pending JPS5772430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55148923A JPS5772430A (en) 1980-10-23 1980-10-23 Phase synchronizng detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55148923A JPS5772430A (en) 1980-10-23 1980-10-23 Phase synchronizng detecting circuit

Publications (1)

Publication Number Publication Date
JPS5772430A true JPS5772430A (en) 1982-05-06

Family

ID=15463677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55148923A Pending JPS5772430A (en) 1980-10-23 1980-10-23 Phase synchronizng detecting circuit

Country Status (1)

Country Link
JP (1) JPS5772430A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005060103A3 (en) * 2003-12-12 2005-12-29 Qualcomm Inc A phase locked loop that sets gain automatically
US7825706B2 (en) 2002-06-28 2010-11-02 Qualcomm Incorporated Phase locked loop that sets gain automatically

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7825706B2 (en) 2002-06-28 2010-11-02 Qualcomm Incorporated Phase locked loop that sets gain automatically
WO2005060103A3 (en) * 2003-12-12 2005-12-29 Qualcomm Inc A phase locked loop that sets gain automatically
EP2211467A1 (en) * 2003-12-12 2010-07-28 Qualcomm Incorporated A phase locked loop that sets gain automatically

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