FR2508739B1 - Circuit numerique de demodulation d'un signal module en frequence, application de ce circuit a la realisation d'un etage de demodulation du signal de chrominance d'un recepteur de television, et recepteur de television equipe d'un tel etage - Google Patents

Circuit numerique de demodulation d'un signal module en frequence, application de ce circuit a la realisation d'un etage de demodulation du signal de chrominance d'un recepteur de television, et recepteur de television equipe d'un tel etage

Info

Publication number
FR2508739B1
FR2508739B1 FR8112412A FR8112412A FR2508739B1 FR 2508739 B1 FR2508739 B1 FR 2508739B1 FR 8112412 A FR8112412 A FR 8112412A FR 8112412 A FR8112412 A FR 8112412A FR 2508739 B1 FR2508739 B1 FR 2508739B1
Authority
FR
France
Prior art keywords
demodulation
stage
television receiver
circuit
production
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
FR8112412A
Other languages
English (en)
French (fr)
Other versions
FR2508739A1 (fr
Inventor
Gerard Le Floch
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.)
Laboratoires dElectronique Philips SAS
Original Assignee
Laboratoires dElectronique et de Physique Appliquee
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 Laboratoires dElectronique et de Physique Appliquee filed Critical Laboratoires dElectronique et de Physique Appliquee
Priority to FR8112412A priority Critical patent/FR2508739B1/fr
Priority to US06/388,386 priority patent/US4486716A/en
Priority to EP82200756A priority patent/EP0068571B1/fr
Priority to DE8282200756T priority patent/DE3266917D1/de
Priority to JP57107001A priority patent/JPS583403A/ja
Publication of FR2508739A1 publication Critical patent/FR2508739A1/fr
Application granted granted Critical
Publication of FR2508739B1 publication Critical patent/FR2508739B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/18—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous and sequential signals, e.g. SECAM-system
    • H04N11/186—Decoding means therefor
    • 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
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • 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
    • H03D2200/005—Analog to digital 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
    • H03D2200/006—Signal sampling
    • H03D2200/0062—Computation of input samples, e.g. successive samples
    • 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
    • H03D3/006—Demodulation of angle-, frequency- or phase- modulated oscillations by sampling the oscillations and further processing the samples, e.g. by computing techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
FR8112412A 1981-06-24 1981-06-24 Circuit numerique de demodulation d'un signal module en frequence, application de ce circuit a la realisation d'un etage de demodulation du signal de chrominance d'un recepteur de television, et recepteur de television equipe d'un tel etage Expired FR2508739B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR8112412A FR2508739B1 (fr) 1981-06-24 1981-06-24 Circuit numerique de demodulation d'un signal module en frequence, application de ce circuit a la realisation d'un etage de demodulation du signal de chrominance d'un recepteur de television, et recepteur de television equipe d'un tel etage
US06/388,386 US4486716A (en) 1981-06-24 1982-06-14 Digital FM demodulator using delay circuits
EP82200756A EP0068571B1 (fr) 1981-06-24 1982-06-18 Circuit numérique de démodulation d'un signal modulé en fréquence, application de ce circuit à la réalisation d'un étage de démodulation du signal de chrominance d'un récepteur de télévision, et récepteur de télévision équipé d'un tel étage
DE8282200756T DE3266917D1 (en) 1981-06-24 1982-06-18 Digital demodulation circuit for a frequency-modulated signal, application of this circuit to the realisation of a demodulator stage for the chrominance signal of a television receiver, and television receiver comprising such a stage
JP57107001A JPS583403A (ja) 1981-06-24 1982-06-23 デイジタル復調回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8112412A FR2508739B1 (fr) 1981-06-24 1981-06-24 Circuit numerique de demodulation d'un signal module en frequence, application de ce circuit a la realisation d'un etage de demodulation du signal de chrominance d'un recepteur de television, et recepteur de television equipe d'un tel etage

Publications (2)

Publication Number Publication Date
FR2508739A1 FR2508739A1 (fr) 1982-12-31
FR2508739B1 true FR2508739B1 (fr) 1986-01-03

Family

ID=9259836

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8112412A Expired FR2508739B1 (fr) 1981-06-24 1981-06-24 Circuit numerique de demodulation d'un signal module en frequence, application de ce circuit a la realisation d'un etage de demodulation du signal de chrominance d'un recepteur de television, et recepteur de television equipe d'un tel etage

Country Status (5)

Country Link
US (1) US4486716A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0068571B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS583403A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3266917D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2508739B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3124963A1 (de) * 1981-06-25 1983-01-20 Philips Patentverwaltung Gmbh, 2000 Hamburg Anordnung zur demodulation eines frequenzmodulierten eingangssignals
DE3275448D1 (en) * 1982-11-26 1987-03-19 Itt Ind Gmbh Deutsche Digital fm demodulation circuit
US4547737A (en) * 1983-07-29 1985-10-15 Rca Corporation Demodulator of sampled data FM signals from sets of four successive samples
FR2552598B1 (fr) * 1983-09-23 1985-10-31 Labo Electronique Physique Procede et circuit de demodulation numerique d'un signal module en amplitude et recepteur de television equipe d'un tel circuit
FR2595895B1 (fr) * 1986-03-13 1988-05-13 France Etat Double demodulateur numerique
US4910469A (en) * 1989-05-02 1990-03-20 Rca Licensing Corporation Demodulator for sampled data FM signals
US5040192A (en) * 1990-02-06 1991-08-13 Hayes Microcomputer Products, Inc. Method and apparatus for optimally autocorrelating an FSK signal
DE4116614A1 (de) * 1991-05-22 1992-11-26 Bosch Gmbh Robert Verfahren zur demodulation und synchronisation fuer digital modulierte signale
US6031418A (en) * 1998-11-19 2000-02-29 Lockheed Martin Corporation Method and apparatus for demodulating digital frequency modulation (FM) signals

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387220A (en) * 1965-02-23 1968-06-04 Automatic Elect Lab Apparatus and method for synchronously demodulating frequency modulated differentially coherent duobinary signals
US4090145A (en) * 1969-03-24 1978-05-16 Webb Joseph A Digital quadrature demodulator
US3778727A (en) * 1972-05-11 1973-12-11 Singer Co Crystal controlled frequency discriminator
FR2219570B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-02-22 1976-09-10 Dassault Electronique
FR2469824A1 (fr) * 1979-11-14 1981-05-22 Thomson Csf Procede de demodulation d'un signal module en frequence et demodulateurs mettant en oeuvre ce procede

Also Published As

Publication number Publication date
JPS583403A (ja) 1983-01-10
DE3266917D1 (en) 1985-11-21
EP0068571A1 (fr) 1983-01-05
EP0068571B1 (fr) 1985-10-16
FR2508739A1 (fr) 1982-12-31
US4486716A (en) 1984-12-04
JPH0320923B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-03-20

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Legal Events

Date Code Title Description
ST Notification of lapse