FR2406926A1 - Dispositif de separation des composantes d'un signal video composite - Google Patents

Dispositif de separation des composantes d'un signal video composite

Info

Publication number
FR2406926A1
FR2406926A1 FR7829760A FR7829760A FR2406926A1 FR 2406926 A1 FR2406926 A1 FR 2406926A1 FR 7829760 A FR7829760 A FR 7829760A FR 7829760 A FR7829760 A FR 7829760A FR 2406926 A1 FR2406926 A1 FR 2406926A1
Authority
FR
France
Prior art keywords
video signal
composite video
separating
components
circuit
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
FR7829760A
Other languages
English (en)
Other versions
FR2406926B1 (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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of FR2406926A1 publication Critical patent/FR2406926A1/fr
Application granted granted Critical
Publication of FR2406926B1 publication Critical patent/FR2406926B1/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)
  • Color Television Systems (AREA)

Abstract

L'invention concerne le traitement des signaux de télévision en couleur. Pour séparer un signal vidéo composite en composantes de luminance et de chrominance, on applique le signal composite à échantillonner à un circuit de retard 201, qui attaque deux filtres 202, 203 qui correspondent respectivement à la direction verticale et à la direction horizontale de l'image. Les filtres fournissent des estimations de la valeur de chaque composante, qui sont transmises à un circuit de décision 204. Le circuit 204 sélectionne la meilleure estimation en se basant sur la relation entre chaque estimation et les valeurs des composantes des éléments d'image voisins. Application au codage numérique des signaux de télévision.
FR7829760A 1977-10-20 1978-10-19 Dispositif de separation des composantes d'un signal video composite Granted FR2406926A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/843,983 US4141035A (en) 1977-10-20 1977-10-20 Technique for separating composite video signals

Publications (2)

Publication Number Publication Date
FR2406926A1 true FR2406926A1 (fr) 1979-05-18
FR2406926B1 FR2406926B1 (fr) 1985-01-11

Family

ID=25291477

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7829760A Granted FR2406926A1 (fr) 1977-10-20 1978-10-19 Dispositif de separation des composantes d'un signal video composite

Country Status (9)

Country Link
US (1) US4141035A (fr)
JP (1) JPS5481028A (fr)
BE (1) BE871383A (fr)
CA (1) CA1106966A (fr)
DE (1) DE2845533A1 (fr)
FR (1) FR2406926A1 (fr)
GB (1) GB2007458B (fr)
NL (1) NL7810487A (fr)
SE (1) SE438231B (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6031389B2 (ja) * 1978-04-05 1985-07-22 日本電気株式会社 テレビジョン映像信号特殊効果装置
GB2069287B (en) * 1980-01-30 1983-09-01 Sony Corp Decoding pal television signals
GB2084432A (en) * 1980-09-18 1982-04-07 Sony Corp Error concealment in digital television signals
JPS57111195A (en) * 1980-12-27 1982-07-10 Sony Corp Picture filter
JPH0799804B2 (ja) * 1981-07-13 1995-10-25 ソニー株式会社 フィルタ装置
JPS5850883A (ja) * 1981-09-21 1983-03-25 Sony Corp 分離フイルタ
JPS5923987A (ja) * 1982-07-30 1984-02-07 Toshiba Corp デジタルテレビジヨン受像機
JPS59198100A (ja) * 1983-04-05 1984-11-09 テクトロニツクス・インコーポレイテツド 色・輝度分離処理装置
JPS607271A (ja) * 1983-06-24 1985-01-16 Matsushita Electric Ind Co Ltd テレビジヨン同期受信機
JPS60134587A (ja) * 1983-12-22 1985-07-17 Mitsubishi Electric Corp 適応型輝度信号色信号分離フイルタ
CA1270322A (fr) * 1983-12-22 1990-06-12 Kotaro Asai Filtre-peigne adaptatif
JP2557039B2 (ja) * 1983-12-27 1996-11-27 ソニー株式会社 Ｙ／ｃ分離フイルタ
JPS60253392A (ja) * 1984-05-29 1985-12-14 Mitsubishi Electric Corp 適応型輝度信号色信号分離フイルタ
DE3587785T2 (de) * 1984-05-11 1994-07-28 Mitsubishi Electric Corp Trennungsfilter von Leuchtdichte- und Farbensignalen eines PAL-Systems.
GB2159363A (en) * 1984-05-25 1985-11-27 Electronic Automation Ltd Method and apparatus for image processing
JPS6114581U (ja) * 1984-06-26 1986-01-28 ソニー株式会社 Ｙ／ｃ分離器
GB2163023B (en) * 1984-08-10 1987-12-23 Sony Corp Decoding digital pal video signals
US4727415A (en) * 1984-10-05 1988-02-23 Mitsubishi Denki Kabushiki Kaisha Variable direction filter for separation of luminance and chrominance signals
JPS61148991A (ja) * 1984-12-21 1986-07-07 Mitsubishi Electric Corp ダイナミツク輝度信号・色信号分離くし形フイルタ
JPH0620255B2 (ja) * 1985-03-11 1994-03-16 三菱電機株式会社 画像信号平滑化フイルタ
FR2583246B1 (fr) * 1985-06-11 1987-08-07 Thomson Csf Procede de separation des signaux de luminance et de chrominance d'un signal video composite pal ou secam et dispositif pour la mise en oeuvre de ce procede
US4789890A (en) * 1985-12-05 1988-12-06 Mitsubishi Denki Kabushiki Kaisha Judgement circuit and adaptive filter incorporating the same
GB8622680D0 (en) * 1986-09-19 1986-10-22 Robinson R N Decoder
US4868650A (en) * 1988-03-07 1989-09-19 Rca Licensing Corporation Circuitry for expanding the effect of a video control signal in multiple dimensions
JPH0720265B2 (ja) * 1988-11-04 1995-03-06 三菱電機株式会社 映像信号処理回路
US5220414A (en) * 1989-05-09 1993-06-15 Deutsche Itt Industries Gmbh Two-line comb filtering with spatial mixing
US5210705A (en) * 1990-02-28 1993-05-11 Texas Instruments Incorporated Digital filtering with single-instruction, multiple-data processor
US6469741B2 (en) 1993-07-26 2002-10-22 Pixel Instruments Corp. Apparatus and method for processing television signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050084A (en) * 1976-07-14 1977-09-20 Cbs Inc. Comb filter for television signals having adaptive features

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003079A (en) * 1975-08-15 1977-01-11 Eastman Kodak Company Chrominance-luminance signal separation for off-air video recorder
US4141034A (en) * 1977-08-19 1979-02-20 Bell Telephone Laboratories, Incorporated Digital encoding of color video signals
US4125856A (en) * 1977-08-19 1978-11-14 Bell Telephone Laboratories, Incorporated Digital encoding and decoding of color video signals

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050084A (en) * 1976-07-14 1977-09-20 Cbs Inc. Comb filter for television signals having adaptive features

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/78 *

Also Published As

Publication number Publication date
GB2007458B (en) 1982-04-07
JPS5481028A (en) 1979-06-28
DE2845533A1 (de) 1979-05-03
BE871383A (fr) 1979-02-15
SE7810539L (sv) 1979-04-21
GB2007458A (en) 1979-05-16
SE438231B (sv) 1985-04-01
NL7810487A (nl) 1979-04-24
JPS6343956B2 (fr) 1988-09-01
US4141035A (en) 1979-02-20
DE2845533C2 (fr) 1988-02-25
CA1106966A (fr) 1981-08-11
FR2406926B1 (fr) 1985-01-11

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Legal Events

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ST Notification of lapse