JPS5419345A - Lock detection circuit for phase synchronous loop - Google Patents

Lock detection circuit for phase synchronous loop

Info

Publication number
JPS5419345A
JPS5419345A JP8437577A JP8437577A JPS5419345A JP S5419345 A JPS5419345 A JP S5419345A JP 8437577 A JP8437577 A JP 8437577A JP 8437577 A JP8437577 A JP 8437577A JP S5419345 A JPS5419345 A JP S5419345A
Authority
JP
Japan
Prior art keywords
detection circuit
lock detection
phase synchronous
synchronous loop
detection
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.)
Granted
Application number
JP8437577A
Other languages
Japanese (ja)
Other versions
JPS5744059B2 (en
Inventor
Tsutomu Ogishi
Tadashi Sakurai
Toru Akiyama
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP8437577A priority Critical patent/JPS5419345A/en
Publication of JPS5419345A publication Critical patent/JPS5419345A/en
Publication of JPS5744059B2 publication Critical patent/JPS5744059B2/ja
Granted 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
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/095—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector

Landscapes

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

Abstract

PURPOSE:To increase the sensitivity for detection in comparison with the detection and memory only with LPF, by performing the detection and memory for unlocked condition with separate means.
JP8437577A 1977-07-13 1977-07-13 Lock detection circuit for phase synchronous loop Granted JPS5419345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8437577A JPS5419345A (en) 1977-07-13 1977-07-13 Lock detection circuit for phase synchronous loop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8437577A JPS5419345A (en) 1977-07-13 1977-07-13 Lock detection circuit for phase synchronous loop

Publications (2)

Publication Number Publication Date
JPS5419345A true JPS5419345A (en) 1979-02-14
JPS5744059B2 JPS5744059B2 (en) 1982-09-18

Family

ID=13828780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8437577A Granted JPS5419345A (en) 1977-07-13 1977-07-13 Lock detection circuit for phase synchronous loop

Country Status (1)

Country Link
JP (1) JPS5419345A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5558633A (en) * 1978-10-25 1980-05-01 Nec Corp Unlock signal output circuit of pll circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5558633A (en) * 1978-10-25 1980-05-01 Nec Corp Unlock signal output circuit of pll circuit
JPS6247373B2 (en) * 1978-10-25 1987-10-07 Nippon Electric Co

Also Published As

Publication number Publication date
JPS5744059B2 (en) 1982-09-18

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