FR2400299A1 - Dispositif de correction d'une image de television en couleurs - Google Patents

Dispositif de correction d'une image de television en couleurs

Info

Publication number
FR2400299A1
FR2400299A1 FR7819534A FR7819534A FR2400299A1 FR 2400299 A1 FR2400299 A1 FR 2400299A1 FR 7819534 A FR7819534 A FR 7819534A FR 7819534 A FR7819534 A FR 7819534A FR 2400299 A1 FR2400299 A1 FR 2400299A1
Authority
FR
France
Prior art keywords
correcting
color television
television image
chrominance
infidelities
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
FR7819534A
Other languages
English (en)
Other versions
FR2400299B1 (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.)
QUADRICOLOR Tech LP
Original Assignee
QUADRICOLOR Tech LP
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 QUADRICOLOR Tech LP filed Critical QUADRICOLOR Tech LP
Publication of FR2400299A1 publication Critical patent/FR2400299A1/fr
Application granted granted Critical
Publication of FR2400299B1 publication Critical patent/FR2400299B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

L'invention concerne un dispositif de correction destiné à réduire les infidélités de couleurs dans un récepteur de télévision. Les infidélités sont réduites en ajoutant aux signaux de chrominance ou de couleurs primaires des composantes de chrominance déduites, produites à partir d'informations disponibles dans le signal monochrome. Le dispositif fonctionne essentiellement dans deux modes, le mode de transition et le mode de hautes fréquences indépendantes. L'invention s'applique notamment aux dispositifs de télévision du type NTSC.
FR7819534A 1977-07-01 1978-06-29 Dispositif de correction d'une image de television en couleurs Granted FR2400299A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/812,422 US4183051A (en) 1977-07-01 1977-07-01 Color television receiving system utilizing multimode inferred highs correction to reduce color infidelities

Publications (2)

Publication Number Publication Date
FR2400299A1 true FR2400299A1 (fr) 1979-03-09
FR2400299B1 FR2400299B1 (fr) 1984-06-15

Family

ID=25209516

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819534A Granted FR2400299A1 (fr) 1977-07-01 1978-06-29 Dispositif de correction d'une image de television en couleurs

Country Status (16)

Country Link
US (1) US4183051A (fr)
JP (1) JPS5444830A (fr)
AU (1) AU520290B2 (fr)
BE (1) BE868646A (fr)
BR (1) BR7804193A (fr)
CA (1) CA1115830A (fr)
DE (1) DE2828921A1 (fr)
DK (1) DK297478A (fr)
ES (1) ES471291A1 (fr)
FR (1) FR2400299A1 (fr)
GB (1) GB2001224B (fr)
IT (1) IT1214429B (fr)
MX (1) MX146094A (fr)
NL (1) NL7807105A (fr)
NO (1) NO782068L (fr)
SE (1) SE7807433L (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296433A (en) * 1980-05-19 1981-10-20 Matsushita Electric Corporation Of America Color television receiving system with forced chroma transients
US4355326A (en) * 1981-02-11 1982-10-19 Zenith Radio Corporation Bandwidth enhancement network for color television signals
US4593310A (en) * 1983-09-22 1986-06-03 High Resolution Television, Inc Video chroma controller gating chrominance signals by the luminance signal
US4797741A (en) * 1985-08-28 1989-01-10 Canon Kabushiki Kaisha Information signal transmission system
JPH0775047B2 (ja) * 1987-02-25 1995-08-09 株式会社東芝 信号処理回路
JPH04124977A (ja) * 1990-09-17 1992-04-24 Victor Co Of Japan Ltd 画質改善装置
GB9214214D0 (en) * 1992-07-03 1992-08-12 Snell & Wilcox Ltd Video signal processing
US5374964A (en) * 1993-08-04 1994-12-20 Matsushita Electric Corporation Of America Circuit and method for controlling abnormally slow transitions in color television signals
JPH1032834A (ja) * 1996-07-15 1998-02-03 Nec Corp 輪郭補償方法ならびに，輪郭補償回路
US20020027952A1 (en) * 2000-09-07 2002-03-07 Yoshiro Kokuryo Method for automatic equalization for use in demodulating a digital multilevel modulation signal and automatic equalization circuit and receiver circuit using the method
US7532257B2 (en) * 2005-09-07 2009-05-12 Texas Instruments Incorporated System and implementation for IF compensation for video decoders
TW201012231A (en) * 2008-09-08 2010-03-16 Sunplus Technology Co Ltd Color reconstruction system and method for SECAM television signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778543A (en) * 1972-09-05 1973-12-11 Ellanin Investments Predictive-retrospective method for bandwidth improvement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU30728A1 (fr) * 1950-05-01
US3836707A (en) * 1971-12-27 1974-09-17 Hitachi Ltd Video signal processing device for extracting the chrominance and luminance signals from a composite video signal in a color television receiver
US3984865A (en) * 1975-03-26 1976-10-05 Rca Corporation Transient suppression in television video systems

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778543A (en) * 1972-09-05 1973-12-11 Ellanin Investments Predictive-retrospective method for bandwidth improvement

Also Published As

Publication number Publication date
AU3753078A (en) 1980-01-03
GB2001224A (en) 1979-01-24
IT7825260A0 (it) 1978-06-30
DE2828921A1 (de) 1979-01-25
IT1214429B (it) 1990-01-18
CA1115830A (fr) 1982-01-05
FR2400299B1 (fr) 1984-06-15
US4183051A (en) 1980-01-08
BE868646A (fr) 1979-01-02
BR7804193A (pt) 1979-04-10
GB2001224B (en) 1982-01-27
AU520290B2 (en) 1982-01-21
SE7807433L (sv) 1979-02-27
MX146094A (es) 1982-05-12
ES471291A1 (es) 1979-10-01
NL7807105A (nl) 1979-01-03
DK297478A (da) 1979-04-06
JPS5444830A (en) 1979-04-09
NO782068L (no) 1979-01-03

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Legal Events

Date Code Title Description
ST Notification of lapse