JPS56149121A - Phase synchronizing circuit - Google Patents

Phase synchronizing circuit

Info

Publication number
JPS56149121A
JPS56149121A JP5225380A JP5225380A JPS56149121A JP S56149121 A JPS56149121 A JP S56149121A JP 5225380 A JP5225380 A JP 5225380A JP 5225380 A JP5225380 A JP 5225380A JP S56149121 A JPS56149121 A JP S56149121A
Authority
JP
Japan
Prior art keywords
circuit
output
signal
phase
frequency division
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
JP5225380A
Other languages
Japanese (ja)
Inventor
Yasubumi Shiromizu
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5225380A priority Critical patent/JPS56149121A/en
Publication of JPS56149121A publication Critical patent/JPS56149121A/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

Landscapes

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

Abstract

PURPOSE:To perform phase synchronization with an extremely wide frequency lead- in range by including a counting circuit which determines the frequency division rate where an input signal and a signal to be controlled can be phase-synchronized and divides the frequency of the output signal of a main oscillating circuit at the determined frequency division rate. CONSTITUTION:AND circuit 27 performs AND among the 1st output of phase comparator 25, the output signal of phase detecting circuit 26 and the output of main oscillating circuit 31. On the other hand, AND circuit 28 ANDs the 2nd output, complementary to the 1st output of comparator 25, with the output of circuit 31. Then, a pulse train proportional to the phase difference between a signal to be controlled and an input signal which is the output signal of circuit 27 or 28 is counted by counting circuit 29. Further, counting circuit 30 is included which determines the frequency division ratio where the input signal and the signal to be controlled can be phase-synchronized on the basis of the output of circuit 29 and then divides the frequency of the output signal of circuit 31 at the determined frequency division rate, leading the output signal of circuit 30 to output terminal 34. Consequently, phase correction proportional to the phase difference is made to perform phase synchronization with an extremely wide frequency lead-in range.
JP5225380A 1980-04-22 1980-04-22 Phase synchronizing circuit Pending JPS56149121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5225380A JPS56149121A (en) 1980-04-22 1980-04-22 Phase synchronizing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5225380A JPS56149121A (en) 1980-04-22 1980-04-22 Phase synchronizing circuit

Publications (1)

Publication Number Publication Date
JPS56149121A true JPS56149121A (en) 1981-11-18

Family

ID=12909567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5225380A Pending JPS56149121A (en) 1980-04-22 1980-04-22 Phase synchronizing circuit

Country Status (1)

Country Link
JP (1) JPS56149121A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63122116U (en) * 1987-02-04 1988-08-09
JPS63148516U (en) * 1987-03-20 1988-09-30
JPS641329A (en) * 1987-06-23 1989-01-05 Fuji Electric Co Ltd Digital synchronism control circuit
JP2014168210A (en) * 2013-02-28 2014-09-11 Fujitsu General Ltd Digital oscillator and digital PLL circuit
JP2014195354A (en) * 2013-03-28 2014-10-09 Fujitsu General Ltd Three-phase rectifier

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63122116U (en) * 1987-02-04 1988-08-09
JPS63148516U (en) * 1987-03-20 1988-09-30
JPS641329A (en) * 1987-06-23 1989-01-05 Fuji Electric Co Ltd Digital synchronism control circuit
JP2014168210A (en) * 2013-02-28 2014-09-11 Fujitsu General Ltd Digital oscillator and digital PLL circuit
JP2014195354A (en) * 2013-03-28 2014-10-09 Fujitsu General Ltd Three-phase rectifier

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