RO78686A - Dispozitiv de demodulare a frecventei - Google Patents

Dispozitiv de demodulare a frecventei

Info

Publication number
RO78686A
RO78686A RO80102874A RO10287480A RO78686A RO 78686 A RO78686 A RO 78686A RO 80102874 A RO80102874 A RO 80102874A RO 10287480 A RO10287480 A RO 10287480A RO 78686 A RO78686 A RO 78686A
Authority
RO
Romania
Prior art keywords
demodition
frequency
frequency demodition
demodition device
Prior art date
Application number
RO80102874A
Other languages
English (en)
French (fr)
Inventor
Zanten Francois Van
Original Assignee
Thomson-Csf,Fr
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-Csf,Fr filed Critical Thomson-Csf,Fr
Publication of RO78686A publication Critical patent/RO78686A/ro

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
    • H03D3/02—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Processing Of Color Television Signals (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
RO80102874A 1979-12-21 1980-12-17 Dispozitiv de demodulare a frecventei RO78686A (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7931485A FR2472302A1 (fr) 1979-12-21 1979-12-21 Circuit a asservissement de phase, et dispositif comportant un tel circuit notamment pour la television

Publications (1)

Publication Number Publication Date
RO78686A true RO78686A (ro) 1982-03-24

Family

ID=9233093

Family Applications (1)

Application Number Title Priority Date Filing Date
RO80102874A RO78686A (ro) 1979-12-21 1980-12-17 Dispozitiv de demodulare a frecventei

Country Status (9)

Country Link
US (1) US4410856A (ro)
JP (1) JPS5698910A (ro)
DD (1) DD155845A5 (ro)
DE (1) DE3048104A1 (ro)
FR (1) FR2472302A1 (ro)
GB (1) GB2066599B (ro)
IT (1) IT1129473B (ro)
PL (1) PL228661A1 (ro)
RO (1) RO78686A (ro)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451792A (en) * 1981-10-23 1984-05-29 Motorola, Inc. Auto-tuned frequency discriminator
NL8801143A (nl) * 1988-05-02 1989-12-01 Philips Nv Frequentiedemodulatieschakeling.
DE4113646A1 (de) * 1991-04-26 1992-10-29 Philips Patentverwaltung Schaltungsanordung zum demodulieren eines farbsignals in einem fernsehsignal
GB2307150B (en) * 1995-11-09 1999-10-20 Northern Telecom Ltd An interference reduction scheme and method
JP3614620B2 (ja) * 1997-07-30 2005-01-26 アルプス電気株式会社 テレビジョン信号及びｆｍ放送信号の復調器並びにテレビジョン信号及びｆｍ放送信号の受信機
FR2778052B1 (fr) * 1998-04-24 2000-07-21 Sgs Thomson Microelectronics Demodulateur, en particulier de signal de chrominance secam, a double ajustage en frequence
FR2778053B1 (fr) * 1998-04-24 2000-07-21 Sgs Thomson Microelectronics Demodulateur de signal de chrominance secam a deux voies rouge>bleu et a oscillateur unique
WO2001089077A2 (de) * 2000-05-16 2001-11-22 Infineon Technologies Ag Schaltungsanordnung zur toleranzkorrektur in einem frequenzdemodulator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1478484A (fr) * 1966-03-04 1967-04-28 Cft Comp Fse Television Perfectionnements aux dispositifs de restitution de composante continue et d'effacement de signaux parasites en télévision en couleurs
FR1563825A (ro) * 1968-01-23 1969-04-18
CH543193A (de) * 1972-03-30 1973-10-15 Bbc Brown Boveri & Cie Frequenzdetektor
US3939432A (en) * 1973-05-15 1976-02-17 Tektronix, Inc. FM limiter with input level sensing and TTL level output
US3863264A (en) * 1973-05-15 1975-01-28 Tektronix Inc Sequential color and memory decoder
DE2413913A1 (de) * 1974-03-22 1975-09-25 Alfons Simon Kupplungsmechanismus fuer insbesondere uhren
US4006429A (en) * 1975-09-26 1977-02-01 Jerrold Electronics Corporation Homodyne automatic frequency control circuit
FR2413837A1 (fr) * 1977-12-30 1979-07-27 Radiotechnique Recepteur de television selon le procede " secam ", muni d'un dispositif de calage des niveaux de reference de couleurs

Also Published As

Publication number Publication date
JPS5698910A (en) 1981-08-08
DD155845A5 (de) 1982-07-07
DE3048104A1 (de) 1981-09-10
GB2066599B (en) 1984-01-25
PL228661A1 (ro) 1981-08-21
GB2066599A (en) 1981-07-08
US4410856A (en) 1983-10-18
FR2472302A1 (fr) 1981-06-26
IT8068961A0 (it) 1980-12-19
IT1129473B (it) 1986-06-04

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