GB1531632A - Phase-locked loop arrangements - Google Patents

Phase-locked loop arrangements

Info

Publication number
GB1531632A
GB1531632A GB2239576A GB2239576A GB1531632A GB 1531632 A GB1531632 A GB 1531632A GB 2239576 A GB2239576 A GB 2239576A GB 2239576 A GB2239576 A GB 2239576A GB 1531632 A GB1531632 A GB 1531632A
Authority
GB
United Kingdom
Prior art keywords
loop
locked
phase
locked loop
oscillator
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
GB2239576A
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal 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 Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB2239576A priority Critical patent/GB1531632A/en
Priority to AU24096/77A priority patent/AU2409677A/en
Publication of GB1531632A publication Critical patent/GB1531632A/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
    • H03L7/08—Details of the phase-locked loop
    • H03L7/0805—Details of the phase-locked loop the loop being adapted to provide an additional control signal for use outside the loop
    • 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
    • H03L7/07—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop using several loops, e.g. for redundant clock signal generation

Landscapes

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

Abstract

1531632 Automatic phase control WESTINGHOUSE BRAKE & SIGNAL CO Ltd 12 April 1977 [28 May 1976] 22395/76 Heading H3A A phase locked loop arrangement is given a wide path in range with high stability when locked by providing: a first loop 11, 14, 15 in which an oscillator 14 is locked to a reference signal 12 and including a capacitor 31 giving only small damping in the loop; and a second loop 22, 23 in which a second oscillator 23 is locked to the first the overall circuit being heavily damped by a coupling path from the first loop to the second which includes integrator 32 and capacitor 35.
GB2239576A 1976-05-28 1976-05-28 Phase-locked loop arrangements Expired GB1531632A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2239576A GB1531632A (en) 1976-05-28 1976-05-28 Phase-locked loop arrangements
AU24096/77A AU2409677A (en) 1976-05-28 1977-04-07 Phase-locked loop arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2239576A GB1531632A (en) 1976-05-28 1976-05-28 Phase-locked loop arrangements

Publications (1)

Publication Number Publication Date
GB1531632A true GB1531632A (en) 1978-11-08

Family

ID=10178676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2239576A Expired GB1531632A (en) 1976-05-28 1976-05-28 Phase-locked loop arrangements

Country Status (2)

Country Link
AU (1) AU2409677A (en)
GB (1) GB1531632A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513041A1 (en) * 1981-09-15 1983-03-18 Thomson Csf Mat Tel PLL varicap diode piezoelectric oscillator - has digital frequency divider feeding phase comparator supplied with reference to select correction speed
GB2138227A (en) * 1983-04-12 1984-10-17 Sony Corp Digital video tape recorder apparatus
EP0453253A2 (en) * 1990-04-20 1991-10-23 International Business Machines Corporation Timing signal generator for signal processing system
US5206769A (en) * 1990-04-20 1993-04-27 International Business Machines Corporation Method for controlling a plurality of phase-lock loops from a common frequency control
EP0690581A3 (en) * 1994-07-01 1996-08-07 Siemens Ag Frequency control circuit of a clock generator
WO1998010519A1 (en) * 1996-09-04 1998-03-12 Siemens Aktiengesellschaft Low-jitter phase-locking loop
WO2000018008A2 (en) * 1998-09-17 2000-03-30 Infineon Technologies Ag Circuit for recovering a data signal and regenerating a clock signal
WO2001011781A1 (en) * 1999-08-05 2001-02-15 Philips Semiconductors Inc. Clock synchronization system and method

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513041A1 (en) * 1981-09-15 1983-03-18 Thomson Csf Mat Tel PLL varicap diode piezoelectric oscillator - has digital frequency divider feeding phase comparator supplied with reference to select correction speed
GB2138227A (en) * 1983-04-12 1984-10-17 Sony Corp Digital video tape recorder apparatus
EP0122752A2 (en) * 1983-04-12 1984-10-24 Sony Corporation Digital video tape recorder apparatus
EP0122752A3 (en) * 1983-04-12 1986-11-20 Sony Corporation Digital video tape recorder apparatus
US5206769A (en) * 1990-04-20 1993-04-27 International Business Machines Corporation Method for controlling a plurality of phase-lock loops from a common frequency control
EP0453253A3 (en) * 1990-04-20 1993-01-13 International Business Machines Corporation Timing signal generator for signal processing system
EP0453253A2 (en) * 1990-04-20 1991-10-23 International Business Machines Corporation Timing signal generator for signal processing system
EP0690581A3 (en) * 1994-07-01 1996-08-07 Siemens Ag Frequency control circuit of a clock generator
CN1065693C (en) * 1994-07-01 2001-05-09 西门子公司 Frequency detecting and controlling circuits of clockgenerator
WO1998010519A1 (en) * 1996-09-04 1998-03-12 Siemens Aktiengesellschaft Low-jitter phase-locking loop
WO2000018008A2 (en) * 1998-09-17 2000-03-30 Infineon Technologies Ag Circuit for recovering a data signal and regenerating a clock signal
WO2000018008A3 (en) * 1998-09-17 2000-05-25 Siemens Ag Circuit for recovering a data signal and regenerating a clock signal
US6433599B2 (en) 1998-09-17 2002-08-13 Infineon Technologies Ag Circuit for data signal recovery and clock signal regeneration
WO2001011781A1 (en) * 1999-08-05 2001-02-15 Philips Semiconductors Inc. Clock synchronization system and method
US6636575B1 (en) 1999-08-05 2003-10-21 Koninklijke Philips Electronics N.V. Cascading PLL units for achieving rapid synchronization between digital communications systems

Also Published As

Publication number Publication date
AU2409677A (en) 1978-10-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee