FI884262A - Frekvensdemodulator utfoerd med pll-teknik. - Google Patents

Frekvensdemodulator utfoerd med pll-teknik. Download PDF

Info

Publication number
FI884262A
FI884262A FI884262A FI884262A FI884262A FI 884262 A FI884262 A FI 884262A FI 884262 A FI884262 A FI 884262A FI 884262 A FI884262 A FI 884262A FI 884262 A FI884262 A FI 884262A
Authority
FI
Finland
Prior art keywords
utfoerd
teknik
pll
med
frequency demodulator
Prior art date
Application number
FI884262A
Other languages
English (en)
Other versions
FI884262A0 (fi
Inventor
Antoine Pery
Jean-Claude Rufray
Original Assignee
Thomson Brandt Gmbh
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 Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of FI884262A0 publication Critical patent/FI884262A0/fi
Publication of FI884262A publication Critical patent/FI884262A/fi

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked 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
    • H03L7/08—Details of the phase-locked loop
    • H03L7/14—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted
    • H03L7/143—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted by switching the reference signal of the phase-locked loop
    • H03L7/145—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted by switching the reference signal of the phase-locked loop the switched reference signal being derived from the controlled oscillator output signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0047—Offset of DC voltage or frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0052—Digital to analog conversion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0082—Quadrature arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)
FI884262A 1987-09-19 1988-09-16 Frekvensdemodulator utfoerd med pll-teknik. FI884262A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873731567 DE3731567A1 (de) 1987-09-19 1987-09-19 Frequenzdemodulator in pll-technik

Publications (2)

Publication Number Publication Date
FI884262A0 FI884262A0 (fi) 1988-09-16
FI884262A true FI884262A (fi) 1989-03-20

Family

ID=6336400

Family Applications (1)

Application Number Title Priority Date Filing Date
FI884262A FI884262A (fi) 1987-09-19 1988-09-16 Frekvensdemodulator utfoerd med pll-teknik.

Country Status (5)

Country Link
EP (1) EP0308709A1 (fi)
JP (1) JPH01144707A (fi)
KR (1) KR890005971A (fi)
DE (1) DE3731567A1 (fi)
FI (1) FI884262A (fi)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2081365T3 (es) * 1990-02-14 1996-03-01 Siemens Ag Procedimiento para la desmodulacion de señales de television en color codificadas-secam con ciclo acoplado de lineas y disposicion de circuito para la realizacion del procedimiento.
JP2953854B2 (ja) * 1992-01-27 1999-09-27 日本電気株式会社 Ｆｍ復調回路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT986172B (it) * 1973-06-18 1975-01-20 Fatme Spa Dispositivo di sincronizzazione automatica per un oscillatore in particolare per impianti di tele comunicazione
FR2530900A1 (fr) * 1982-07-23 1984-01-27 Thomson Csf Dispositif de recuperation de frequence d'horloge adapte aux radiocommunications a haute frequence en milieux perturbes
DE3243014C2 (de) * 1982-11-20 1985-01-24 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Schaltungsanordnung zur Demodulation von SECAM-Farbdifferenzsignalen

Also Published As

Publication number Publication date
EP0308709A1 (de) 1989-03-29
KR890005971A (ko) 1989-05-18
FI884262A0 (fi) 1988-09-16
JPH01144707A (ja) 1989-06-07
DE3731567A1 (de) 1989-04-06

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Legal Events

Date Code Title Description
FA Application withdrawn

Owner name: DEUTSCHE THOMSON-BRANDT GMBH