FR2456444A1 - Dispositif de restauration et d'accentuation du detail vertical d'une image video - Google Patents

Dispositif de restauration et d'accentuation du detail vertical d'une image video

Info

Publication number
FR2456444A1
FR2456444A1 FR8010435A FR8010435A FR2456444A1 FR 2456444 A1 FR2456444 A1 FR 2456444A1 FR 8010435 A FR8010435 A FR 8010435A FR 8010435 A FR8010435 A FR 8010435A FR 2456444 A1 FR2456444 A1 FR 2456444A1
Authority
FR
France
Prior art keywords
signal
detail
luminance
chrominance
network
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
FR8010435A
Other languages
English (en)
Other versions
FR2456444B1 (fr
Inventor
William Adamson Lagoni
Jack Selig Fuhrer
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of FR2456444A1 publication Critical patent/FR2456444A1/fr
Application granted granted Critical
Publication of FR2456444B1 publication Critical patent/FR2456444B1/fr
Expired 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters

Landscapes

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

Abstract

L'INVENTION CONCERNE UN RESEAU COMPRENANT UN FILTRE EN PEIGNE POUR SEPARER DES COMPOSANTES DE CHROMINANCE ET DE LUMINANCE, POUR SELECTIVEMENT RESTAURER ET ACCENTUER LE DETAIL VERTICAL. SELON L'INVENTION, LE FILTRE EN PEIGNE 15 PRODUIT UN SIGNAL DE LUMINANCE D'OU LE SIGNAL DE DETAIL VERTICAL A ETE SUPPRIME, ET UN SIGNAL DE CHROMINANCE CONTENANT DES COMPOSANTES REPRESENTATIVES DU SIGNAL DE DETAIL SUPPRIME, QUI SONT SELECTIVEMENT EXTRAITES DU SIGNAL DE CHROMINANCE. LES SIGNAUX DE DETAIL DE FAIBLE NIVEAU SONT RESTAURES AU SIGNAL DE LUMINANCE PAR UN RESEAU 42 A UN GAIN PRESCRIT DE RESTAURATION. LE SIGNAL DE DETAIL EST EGALEMENT COMBINE AU SIGNAL DE LUMINANCE PAR UN RESEAU 50, 52 QUI SUPPRIME LES SIGNAUX DE DETAIL DE FAIBLE NIVEAU ET ACCENTUE CEUX D'UN NIVEAU SUPERIEUR. L'INVENTION S'APPLIQUE NOTAMMENT A LA TELEVISION EN COULEURS.
FR8010435A 1979-05-11 1980-05-09 Dispositif de restauration et d'accentuation du detail vertical d'une image video Expired FR2456444B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/038,202 US4223339A (en) 1979-05-11 1979-05-11 Video image vertical detail restoration and enhancement

Publications (2)

Publication Number Publication Date
FR2456444A1 true FR2456444A1 (fr) 1980-12-05
FR2456444B1 FR2456444B1 (fr) 1985-11-08

Family

ID=21898626

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8010435A Expired FR2456444B1 (fr) 1979-05-11 1980-05-09 Dispositif de restauration et d'accentuation du detail vertical d'une image video

Country Status (23)

Country Link
US (1) US4223339A (fr)
JP (1) JPS55153489A (fr)
KR (1) KR830004026A (fr)
AT (1) AT383714B (fr)
AU (1) AU536333B2 (fr)
BE (1) BE883155A (fr)
CA (1) CA1140253A (fr)
DE (1) DE3017930C2 (fr)
DK (1) DK147959C (fr)
ES (1) ES491346A0 (fr)
FI (1) FI69380C (fr)
FR (1) FR2456444B1 (fr)
GB (1) GB2050110B (fr)
HK (1) HK17287A (fr)
IT (1) IT1131154B (fr)
MY (1) MY8500729A (fr)
NL (1) NL191551C (fr)
NZ (1) NZ193571A (fr)
PL (1) PL129458B1 (fr)
PT (1) PT71199A (fr)
SE (1) SE447530B (fr)
SU (1) SU1082344A3 (fr)
ZA (1) ZA802769B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245237A (en) * 1979-05-11 1981-01-13 Rca Corporation Controllable non-linear processing of video signals
US4445152A (en) * 1980-09-02 1984-04-24 Karlock James A Video detail enhancing circuit
US4402006A (en) * 1981-02-23 1983-08-30 Karlock James A Image enhancer apparatus
US4365266A (en) * 1981-04-20 1982-12-21 Rca Corporation Horizontal and vertical image detail processing of a color television signal
GB8608811D0 (en) * 1986-04-11 1986-05-14 Avesco Plc Video comb filter digital decoder
JPS6327819A (ja) * 1986-07-22 1988-02-05 Nissan Motor Co Ltd エレクトロクロミツク素子
GB2250886B (en) * 1990-12-13 1995-06-14 Rank Cintel Ltd Noise reduction in video signals
US5287174A (en) * 1991-04-05 1994-02-15 Sanyo Electric Co., Ltd. Vertical resolution correcting circuit for video signal
US6172718B1 (en) * 1998-04-17 2001-01-09 S3 Incorporated Adaptive dynamic aperture correction
GB2393061B (en) * 2002-09-12 2006-08-02 Snell & Wilcox Ltd Composite decoding
TWI430653B (zh) * 2009-03-13 2014-03-11 Asustek Comp Inc 影像處理裝置及影像處理方法
TWI390961B (zh) * 2009-03-13 2013-03-21 Asustek Comp Inc 影像處理裝置及影像處理方法
US8761537B2 (en) * 2011-05-27 2014-06-24 Vixs Systems, Inc. Adaptive edge enhancement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715477A (en) * 1971-03-11 1973-02-06 Rca Corp Video signal noise-limiting apparatus
US3798353A (en) * 1970-10-31 1974-03-19 Fernseh Gmbh Correcting vertical resolution in television color images
US4074321A (en) * 1976-10-12 1978-02-14 The Magnavox Company Circuit for separating chroma and luminance information in a composite video signal
US4096516A (en) * 1977-03-25 1978-06-20 Rca Corporation Electronic signal processing apparatus
US4143397A (en) * 1976-04-19 1979-03-06 Rca Corporation Comb filter apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798353A (en) * 1970-10-31 1974-03-19 Fernseh Gmbh Correcting vertical resolution in television color images
US3715477A (en) * 1971-03-11 1973-02-06 Rca Corp Video signal noise-limiting apparatus
US4143397A (en) * 1976-04-19 1979-03-06 Rca Corporation Comb filter apparatus
US4074321A (en) * 1976-10-12 1978-02-14 The Magnavox Company Circuit for separating chroma and luminance information in a composite video signal
US4096516A (en) * 1977-03-25 1978-06-20 Rca Corporation Electronic signal processing apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. CE-26, no. 1, février 1980, NEW YORK (US), *

Also Published As

Publication number Publication date
NL8002709A (nl) 1980-11-13
GB2050110B (en) 1983-03-09
FR2456444B1 (fr) 1985-11-08
FI69380C (fi) 1986-01-10
PT71199A (en) 1980-06-01
DE3017930C2 (de) 1983-01-05
DK147959C (da) 1985-09-23
FI801424A (fi) 1980-11-12
GB2050110A (en) 1980-12-31
DK147959B (da) 1985-01-14
PL224176A1 (fr) 1981-02-27
MY8500729A (en) 1985-12-31
IT1131154B (it) 1986-06-18
IT8021828A0 (it) 1980-05-06
ES8105911A1 (es) 1981-06-16
DE3017930A1 (de) 1980-11-20
HK17287A (en) 1987-03-06
JPS55153489A (en) 1980-11-29
BE883155A (fr) 1980-09-01
AT383714B (de) 1987-08-10
AU5808880A (en) 1980-11-13
AU536333B2 (en) 1984-05-03
NL191551B (nl) 1995-05-01
SE8003336L (sv) 1980-11-12
NZ193571A (en) 1983-12-16
ATA250080A (de) 1986-12-15
CA1140253A (fr) 1983-01-25
KR830004026A (ko) 1983-06-30
ZA802769B (en) 1981-07-29
DK204380A (da) 1980-11-12
PL129458B1 (en) 1984-05-31
FI69380B (fi) 1985-09-30
SU1082344A3 (ru) 1984-03-23
JPH0135553B2 (fr) 1989-07-26
SE447530B (sv) 1986-11-17
ES491346A0 (es) 1981-06-16
US4223339A (en) 1980-09-16
NL191551C (nl) 1995-09-04

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Legal Events

Date Code Title Description
TP Transmission of property