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
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 JP61257243A priority Critical patent/JPS63111513A/en
Publication of JPS63111513A publication Critical patent/JPS63111513A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/18—Controlling the angular speed together with angular position or phase
    • H02P23/186—Controlling 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)

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