JPS63111513A - Digital phase locked loop circuit - Google Patents

Digital phase locked loop circuit

Info

Publication number
JPS63111513A
JPS63111513A JP61257243A JP25724386A JPS63111513A JP S63111513 A JPS63111513 A JP S63111513A JP 61257243 A JP61257243 A JP 61257243A JP 25724386 A JP25724386 A JP 25724386A JP S63111513 A JPS63111513 A JP S63111513A
Authority
JP
Japan
Prior art keywords
phase
frequency
circuit
comparator
locked loop
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
JP61257243A
Other languages
Japanese (ja)
Inventor
Takanori Senoo
Original Assignee
Matsushita Electric Ind 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 Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Priority to JP61257243A priority Critical patent/JPS63111513A/en
Publication of JPS63111513A publication Critical patent/JPS63111513A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/18Controlling the angular speed together with angular position or phase
    • H02P23/186Controlling the angular speed together with angular position or phase of one shaft by controlling the prime mover

Abstract

PURPOSE:To accurately keep frequency and phase by providing an automatic phase shifting circuit which switches and selects the outputs of a ring counter by a frequency control signal obtaining the phase difference signal received from a phase comparator through a loop filter. CONSTITUTION:Such a digital phase locked loop circuit consists of a phase comparator 1, a loop filter 2, an m-notation ring counter 3 and an automatic phase shift circuit 4. The value obtained by integrating the phase difference signal outputted from the comparator 1 via a filter 2 is turned into a frequency control signal and supplied to the circuit 4. Thus the frequency of a clock K is kept at a constant level. The circuit 4 shifts phase so that the frequency of the clock K is increased with a phase delay of the phase difference signal and decreased with a phase advance, respectively. Thus it is possible to accurately keep the frequency and the phase of an input signal.
JP61257243A 1986-10-29 1986-10-29 Digital phase locked loop circuit Pending JPS63111513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61257243A JPS63111513A (en) 1986-10-29 1986-10-29 Digital phase locked loop circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61257243A JPS63111513A (en) 1986-10-29 1986-10-29 Digital phase locked loop circuit

Publications (1)

Publication Number Publication Date
JPS63111513A true JPS63111513A (en) 1988-05-16

Family

ID=17303676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61257243A Pending JPS63111513A (en) 1986-10-29 1986-10-29 Digital phase locked loop circuit

Country Status (1)

Country Link
JP (1) JPS63111513A (en)

Similar Documents

Publication Publication Date Title
JPS63111513A (en) Digital phase locked loop circuit
JPS6242633A (en) Universal digital clock extracting circuit
JPH02111123A (en) Synchronizing circuit for variable frequency oscillator
JPH01307317A (en) Pll circuit
JPS58205336A (en) Digital phase synchronizing circuit
JPS6281813A (en) Phase shift circuit
JPS6194415A (en) Digitizing device for video signal
JPS61208923A (en) Digital pll circuit
JPH01173919A (en) Phase locked loop circuit
JPS63269827A (en) Digital pll
JPS5776930A (en) Frequency shift signal generating system using pll
JPS57190413A (en) Receiver
JPS63169143A (en) Phase control circuit
JPH01123526A (en) Digital phase locked loop device
KR970055350A (en) Motive Input Automatic Switching Device
JPH0383416A (en) Pll control oscillator
JPH04100412A (en) Phase locked loop circuit
JPH02177688A (en) Burst control oscillator
JPS5797746A (en) Detecting circuit for pilot signal and noise
JPH033420A (en) Pll circuit
JPH03248072A (en) Radar apparatus
JPS6149536A (en) Digital phase synchronizing circuit
JPS62108619A (en) Digital signal phase synchronizing circuit
JPS63164618A (en) Digital phase locked loop circuit
JPH01286522A (en) Digital phase synchronizing circuit