FR2423104A1 - Circuit de filtrage en peigne - Google Patents

Circuit de filtrage en peigne

Info

Publication number
FR2423104A1
FR2423104A1 FR7909494A FR7909494A FR2423104A1 FR 2423104 A1 FR2423104 A1 FR 2423104A1 FR 7909494 A FR7909494 A FR 7909494A FR 7909494 A FR7909494 A FR 7909494A FR 2423104 A1 FR2423104 A1 FR 2423104A1
Authority
FR
France
Prior art keywords
signal
comb
filtering circuit
chrominance
comb filtering
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.)
Granted
Application number
FR7909494A
Other languages
English (en)
Other versions
FR2423104B1 (fr
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2423104A1 publication Critical patent/FR2423104A1/fr
Application granted granted Critical
Publication of FR2423104B1 publication Critical patent/FR2423104B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

Par la multiplication d'une partie de haute fréquence d'un signal de luminance filtré en peigne par un signal de chrominance filtré en peigne d'un signal de télévision couleur, on obtient un signal qui peut être utilisé pour commander un circuit supresseur, au moyen duquel la partie de haute fréquence du signal de luminance, qui est obtenue à partir d'un circuit de filtrage en peigne supprimant le signal de chrominance, peut être supprimée lors de l'apparition de signaux de chrominance indérisables dans le signal de luminance. Application aux récepteur de télévision en couleur.
FR7909494A 1978-04-13 1979-04-13 Circuit de filtrage en peigne Granted FR2423104A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7803910A NL7803910A (nl) 1978-04-13 1978-04-13 Kamfilterschakeling.

Publications (2)

Publication Number Publication Date
FR2423104A1 true FR2423104A1 (fr) 1979-11-09
FR2423104B1 FR2423104B1 (fr) 1983-05-27

Family

ID=19830644

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7909494A Granted FR2423104A1 (fr) 1978-04-13 1979-04-13 Circuit de filtrage en peigne

Country Status (8)

Country Link
US (1) US4241363A (fr)
JP (1) JPS556988A (fr)
CA (1) CA1135836A (fr)
DE (1) DE2914146A1 (fr)
FR (1) FR2423104A1 (fr)
GB (1) GB2020139B (fr)
IT (1) IT1118459B (fr)
NL (1) NL7803910A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091967A1 (fr) * 1981-10-23 1983-10-26 Sony Corporation Circuit de separation de signaux porteurs de couleurs
FR2595896A1 (fr) * 1986-03-17 1987-09-18 France Etat Dispositif de decodage numerique de signaux de television a moyens adaptatifs de separation de la luminance et de la chrominance

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004457B2 (fr) * 1978-03-29 1988-09-21 British Broadcasting Corporation Procédé et circuit de traitement pour signaux de télévision en couleurs PAL
JPS603266B2 (ja) * 1979-09-12 1985-01-26 株式会社日立製作所 搬送色信号の位相調整方式
JPS5711589A (en) * 1980-06-24 1982-01-21 Nec Corp Semiconductor device
JPS57111195A (en) * 1980-12-27 1982-07-10 Sony Corp Picture filter
NL8104101A (nl) * 1981-09-04 1983-04-05 Philips Nv Pal-kamfilter.
GB2127250B (en) * 1982-09-20 1986-04-09 British Broadcasting Corp Colour video signal processing
US4498100A (en) * 1982-11-26 1985-02-05 Rca Corporation Apparatus for frame-to-frame comb filtering composite TV signal
US4498099A (en) * 1982-11-26 1985-02-05 Rca Corporation Apparatus for frame-to-frame comb filtering composite TV signal
SE453246B (sv) * 1982-11-26 1988-01-18 Rca Corp Anordning och sett for bild-till-bildkamfiltrering av en sammansatt televisionssignal
DE3245723A1 (de) * 1982-12-10 1984-06-14 Robert Bosch Gmbh, 7000 Stuttgart Verfahren und schaltungsanordnung zur decodierung von farbfernsehsignalen
KR930004644B1 (en) * 1984-02-06 1993-06-02 Rca Licensing Corp Comb filter
US4623913A (en) * 1984-04-13 1986-11-18 Rca Corporation Progressive scan video processor
US4612567A (en) * 1984-05-03 1986-09-16 Rca Corporation Television receiver using non-interlaced scanning format with vertical detail enhancement and motion compensation
US4583115A (en) * 1984-08-31 1986-04-15 General Electric Company Circuit for and method of broadband comb filtering a composite video signal which has been double-side band detected
DE3435122A1 (de) * 1984-09-25 1986-04-03 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Farbfernsehuebertragungssystem mit uebertragung von luminanzsignalen und tiefpassgefilterten chrominanzsignalen
US4626894A (en) * 1984-10-04 1986-12-02 Rca Corporation Signal filtering system having adaptively cascaded filter stages for developing a variable bandwidth frequency characteristic
US4636842A (en) * 1984-11-29 1987-01-13 Rca Corporation Comb filter "hanging dot" eliminator
US4617589A (en) * 1984-12-17 1986-10-14 Rca Corporation Adaptive frame comb filter system
US4584599A (en) * 1984-12-19 1986-04-22 Scientific Atlanta, Inc. Signal to noise ratio enhancement using baseband signals in an FM television system
US4616254A (en) * 1985-04-18 1986-10-07 Rca Corporation Hanging dot reduction system
US4618882A (en) * 1985-04-18 1986-10-21 Rca Corporation Digital correlation indicator and hanging dot reduction system employing same
JPS6248193A (ja) * 1985-08-27 1987-03-02 Nec Home Electronics Ltd 輪郭強調機能を備えたｙ／ｃ分離回路
US4689663A (en) * 1985-09-27 1987-08-25 Rca Corporation Television receiver with display driver amplifier and input video filter having inversely related bandwidths
US4694331A (en) * 1985-10-01 1987-09-15 Rca Corporation Vertical transition processor for a comb filter
US4682213A (en) * 1985-10-24 1987-07-21 Rca Corporation Magnitude independent hanging dot detector
US4656501A (en) * 1985-10-31 1987-04-07 Rca Corporation Image transition detector
GB8608811D0 (en) * 1986-04-11 1986-05-14 Avesco Plc Video comb filter digital decoder
JPS63232782A (ja) * 1987-03-20 1988-09-28 Victor Co Of Japan Ltd 輝度信号一色差信号分離回路
US4814863A (en) * 1987-06-09 1989-03-21 Matsushita Electric Industrial Co., Ltd. Detection and concealing artifacts in combed video signals
US4809060A (en) * 1987-09-10 1989-02-28 Rca Licensing Corporation Hanging dot reduction arrangement
JPH01251980A (ja) * 1988-03-31 1989-10-06 Hitachi Ltd ディジタル映像信号処理回路
JP2690991B2 (ja) * 1989-01-13 1997-12-17 株式会社日立製作所 Ｙ／ｃ分離回路
US20040155983A1 (en) * 2003-02-10 2004-08-12 Topper Robert J. Reduced artifact luminance/chrominance (Y/C) separator for use in an NTSC decoder
JP2009527981A (ja) * 2006-02-24 2009-07-30 パナソニック オートモーティブ システムズ カンパニー オブ アメリカ ディビジョン オブ パナソニック コーポレイション オブ ノース アメリカ ビデオ信号を処理するシステムと方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167021A (en) * 1977-12-12 1979-09-04 Rca Corporation Suppression of chrominance signal contamination of the luminance signal in a video signal processing system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091967A1 (fr) * 1981-10-23 1983-10-26 Sony Corporation Circuit de separation de signaux porteurs de couleurs
EP0091967A4 (fr) * 1981-10-23 1985-12-19 Sony Corp Circuit de separation de signaux porteurs de couleurs.
FR2595896A1 (fr) * 1986-03-17 1987-09-18 France Etat Dispositif de decodage numerique de signaux de television a moyens adaptatifs de separation de la luminance et de la chrominance
EP0239465A1 (fr) * 1986-03-17 1987-09-30 ETAT FRANCAIS représenté par le Ministre des PTT (Centre National d'Etudes des Télécommunications) Dispositif de décodage numérique de signeaux de télévision à moyens adaptatifs de séparation de la luminance et de la chrominance

Also Published As

Publication number Publication date
JPS556988A (en) 1980-01-18
IT7967756A0 (it) 1979-04-10
NL7803910A (nl) 1979-10-16
DE2914146A1 (de) 1979-10-25
CA1135836A (fr) 1982-11-16
FR2423104B1 (fr) 1983-05-27
IT1118459B (it) 1986-03-03
GB2020139A (en) 1979-11-07
US4241363A (en) 1980-12-23
GB2020139B (en) 1982-09-02

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Legal Events

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