GB1491329A - Startable phase-locked loop oscillator - Google Patents

Startable phase-locked loop oscillator

Info

Publication number
GB1491329A
GB1491329A GB33194/75A GB3319475A GB1491329A GB 1491329 A GB1491329 A GB 1491329A GB 33194/75 A GB33194/75 A GB 33194/75A GB 3319475 A GB3319475 A GB 3319475A GB 1491329 A GB1491329 A GB 1491329A
Authority
GB
United Kingdom
Prior art keywords
comparator
phase
generator
frequency
beat signal
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.)
Expired
Application number
GB33194/75A
Other languages
English (en)
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB1491329A publication Critical patent/GB1491329A/en
Expired 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
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • H03L7/199—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division with reset of the frequency divider or the counter, e.g. for assuring initial synchronisation

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB33194/75A 1974-11-14 1975-08-08 Startable phase-locked loop oscillator Expired GB1491329A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US523631A US3921095A (en) 1974-11-14 1974-11-14 Startable phase-locked loop oscillator

Publications (1)

Publication Number Publication Date
GB1491329A true GB1491329A (en) 1977-11-09

Family

ID=24085774

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33194/75A Expired GB1491329A (en) 1974-11-14 1975-08-08 Startable phase-locked loop oscillator

Country Status (5)

Country Link
US (1) US3921095A (enExample)
JP (1) JPS5334451B2 (enExample)
DE (1) DE2542954C2 (enExample)
FR (1) FR2291638A1 (enExample)
GB (1) GB1491329A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3100429A1 (de) * 1980-01-09 1981-11-19 Tektronix, Inc., 97077 Beaverton, Oreg. Schaltungsanordnung zur erzeugung eines zweiten signals mit einer zweiten frequenz in genauer zeitlicher beziehung zu einem ersten signal mit einer ersten frequenz
GB2183948A (en) * 1985-10-23 1987-06-10 Hitachi Ltd Phase-locked loop
GB2254207A (en) * 1991-01-28 1992-09-30 Silicon Systems Inc Zero phase restart compensation for vco

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982190A (en) * 1975-07-31 1976-09-21 Rockwell International Corporation Phaselock circuitry with lock indication
US4005479A (en) * 1976-01-16 1977-01-25 Control Data Corporation Phase locked circuits
DE2648796C2 (de) * 1976-10-27 1978-12-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltung zur Synchronisierung der Schwingung eines von einem Puls getasteten Oszillators mit einer Referenzschwingung
US4092672A (en) * 1976-11-15 1978-05-30 Rca Corporation Master oscillator synchronizing system
JPS5384666A (en) * 1976-12-30 1978-07-26 Alps Electric Co Ltd Pll circuit
DE2716813C2 (de) * 1977-04-15 1979-01-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen Phasenregelkreis
JPS53130911A (en) * 1977-04-20 1978-11-15 Matsushita Electric Ind Co Ltd Pll synthesizer
US4326173A (en) * 1977-07-25 1982-04-20 Np Industries, Inc. Digital phase locked loop frequency control system
DE2748075C3 (de) * 1977-10-26 1980-08-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Phasenregelkreis
FR2448257A1 (fr) * 1979-02-05 1980-08-29 Trt Telecom Radio Electr Dispositif de resynchronisation rapide d'une horloge
DE3044835C2 (de) * 1980-11-28 1986-04-03 Standard Elektrik Lorenz Ag, 7000 Stuttgart Digitaler Phasendetektor
US4560950A (en) * 1983-09-29 1985-12-24 Tektronix, Inc. Method and circuit for phase lock loop initialization
US4817199A (en) * 1987-07-17 1989-03-28 Rockwell International Corporation Phase locked loop having reduced response time
KR910009808B1 (ko) * 1989-06-13 1991-11-30 한국전기통신공사 디지틀 자동 위상 제어 리타이밍 회로
US5291141A (en) * 1991-09-30 1994-03-01 Hughes Aircraft Company Method for continuously measuring delay margins in digital systems
JPH0817326B2 (ja) * 1993-03-30 1996-02-21 日本電気株式会社 周波数シンセサイザ
US5339278A (en) * 1993-04-12 1994-08-16 Motorola, Inc. Method and apparatus for standby recovery in a phase locked loop
JP3088590B2 (ja) * 1993-06-11 2000-09-18 キヤノン株式会社 位相同期信号発生装置
JP3253631B2 (ja) * 1993-11-09 2002-02-04 モトローラ・インコーポレーテッド 位相同期ループのためのエラー抑圧回路およびそのための方法
US5612980A (en) * 1995-03-22 1997-03-18 Alcatel Network Systems, Inc. Method and apparatus for fast lock time
US6178216B1 (en) * 1997-05-21 2001-01-23 Samsung Electronics Co., Ltd. Digital phase locked loop circuit and method therefor
US9425808B1 (en) * 2015-06-05 2016-08-23 Texas Instruments Incorporated Frequency detector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1147991B (de) * 1955-05-04 1963-05-02 Felten & Guilleaume Gmbh Schaltungsanordnung zur selbsttaetigen, phasenrichtigen Aufschaltung einer Synchronisierwechselspannung auf einen oder mehrere Schwingungserzeuger gleicher Nennfrequenz
FR1469000A (fr) * 1965-12-08 1967-02-10 Thomson Houston Comp Francaise Perfectionnements aux procédés et aux dispositifs de synchronisation
US3619804A (en) * 1969-01-23 1971-11-09 Wilcox Electric Co Inc Frequency discriminator using an intermittently phase-locked loop
US3614648A (en) * 1970-09-10 1971-10-19 Nasa Automatic frequency control loop including synchronous switching circuits
US3638135A (en) * 1970-10-08 1972-01-25 Collins Radio Co Intermittent phase control loop for swept frequency pulse generator
BE795045A (nl) * 1972-02-08 1973-08-06 Philips Nv Inrichting voor het naar keuze opwekken van een uit een aantal in een brede frequentieband gelegen discrete frequenties

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3100429A1 (de) * 1980-01-09 1981-11-19 Tektronix, Inc., 97077 Beaverton, Oreg. Schaltungsanordnung zur erzeugung eines zweiten signals mit einer zweiten frequenz in genauer zeitlicher beziehung zu einem ersten signal mit einer ersten frequenz
GB2183948A (en) * 1985-10-23 1987-06-10 Hitachi Ltd Phase-locked loop
US4743864A (en) * 1985-10-23 1988-05-10 Hitachi, Ltd Power saving intermittently operated phase locked loop
GB2183948B (en) * 1985-10-23 1989-10-18 Hitachi Ltd Phase-locked oscillator
GB2254207A (en) * 1991-01-28 1992-09-30 Silicon Systems Inc Zero phase restart compensation for vco
GB2254207B (en) * 1991-01-28 1995-01-11 Silicon Systems Inc Zero phase restart compensation for VCO

Also Published As

Publication number Publication date
FR2291638B1 (enExample) 1979-05-11
FR2291638A1 (fr) 1976-06-11
DE2542954A1 (de) 1976-05-20
JPS5169346A (enExample) 1976-06-15
DE2542954C2 (de) 1984-03-15
US3921095A (en) 1975-11-18
JPS5334451B2 (enExample) 1978-09-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920808