FR2406363A1 - Dispositif de television en couleurs avec correction des hautes frequences de chrominance - Google Patents

Dispositif de television en couleurs avec correction des hautes frequences de chrominance

Info

Publication number
FR2406363A1
FR2406363A1 FR7819533A FR7819533A FR2406363A1 FR 2406363 A1 FR2406363 A1 FR 2406363A1 FR 7819533 A FR7819533 A FR 7819533A FR 7819533 A FR7819533 A FR 7819533A FR 2406363 A1 FR2406363 A1 FR 2406363A1
Authority
FR
France
Prior art keywords
high frequency
television device
color television
frequency chrominance
chrominance correction
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.)
Pending
Application number
FR7819533A
Other languages
English (en)
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 FR2406363A1 publication Critical patent/FR2406363A1/fr
Pending 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)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Color Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

L'invention concerne un dispositif de télévision en couleurs avec corrosion des hautes fréquences de chrominance. Les composantes de hautes fréquences qui sont absentes des signaux de chrominance sont restituées à partir d'informations disponibles dans le signal monochrome à large bande, et sont additionnées aux signaux de chrominance pour réduire les infidélités de reproduction des images. L'invention s'applique particulièrement aux récepteurs de télévision du type NTSC.
FR7819533A 1977-07-01 1978-06-29 Dispositif de television en couleurs avec correction des hautes frequences de chrominance Pending FR2406363A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/812,229 US4245239A (en) 1977-07-01 1977-07-01 Color television receiving system utilizing inferred high frequency signal components to reduce color infidelities in regions of high color saturation

Publications (1)

Publication Number Publication Date
FR2406363A1 true FR2406363A1 (fr) 1979-05-11

Family

ID=25208930

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819533A Pending FR2406363A1 (fr) 1977-07-01 1978-06-29 Dispositif de television en couleurs avec correction des hautes frequences de chrominance

Country Status (16)

Country Link
US (1) US4245239A (fr)
JP (1) JPS5444829A (fr)
AU (1) AU534178B2 (fr)
BE (1) BE868647A (fr)
BR (1) BR7804192A (fr)
CA (1) CA1115829A (fr)
DE (1) DE2828939A1 (fr)
DK (1) DK297678A (fr)
ES (1) ES471298A1 (fr)
FR (1) FR2406363A1 (fr)
GB (1) GB2000936B (fr)
IT (1) IT1111680B (fr)
MX (1) MX146814A (fr)
NL (1) NL7807103A (fr)
NO (1) NO782067L (fr)
SE (1) SE7807434L (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337479A (en) * 1979-09-13 1982-06-29 Matsushita Electric Industrial Co., Ltd. Color resolution compensator
US4296433A (en) * 1980-05-19 1981-10-20 Matsushita Electric Corporation Of America Color television receiving system with forced chroma transients
US4331971A (en) * 1980-11-19 1982-05-25 Zenith Radio Corporation Mode decision controller for selectively actuating a chrominance bandwith enhancement in a television receiver
US4355326A (en) * 1981-02-11 1982-10-19 Zenith Radio Corporation Bandwidth enhancement network for color television signals
US4553157A (en) * 1983-12-05 1985-11-12 Rca Corporation Apparatus for correcting errors in color signal transitions
DE3421434A1 (de) * 1984-06-08 1985-12-12 Standard Elektrik Lorenz Ag, 7000 Stuttgart Farbfernsehempfangsanordnung mit einer farbkorrekturschaltung
US5130786A (en) * 1989-09-12 1992-07-14 Image Data Corporation Color image compression processing with compensation
US5264924A (en) * 1989-12-18 1993-11-23 Eastman Kodak Company Mechanism for deriving noise-reduced estimates of color signal parameters from multiple color/luminance image sensor outputs
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
JP3443344B2 (ja) * 1998-12-18 2003-09-02 三洋電機株式会社 画像データの処理方法及び画像データ処理装置
FR2817694B1 (fr) * 2000-12-05 2003-10-03 Thomson Licensing Sa Procede et dispositif de lissage spatial pour les zones sombres d'une image
CN114257707A (zh) * 2020-09-21 2022-03-29 安霸国际有限合伙企业 具有彩色夜间模式的智能ip摄像头

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
BE502934A (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
SE7807434L (sv) 1979-01-02
NL7807103A (nl) 1979-01-03
DK297678A (da) 1979-04-06
US4245239A (en) 1981-01-13
CA1115829A (fr) 1982-01-05
BR7804192A (pt) 1979-04-03
JPS5444829A (en) 1979-04-09
IT1111680B (it) 1986-01-13
MX146814A (es) 1982-08-24
IT7825258A0 (it) 1978-06-30
AU534178B2 (en) 1984-01-12
GB2000936B (en) 1982-02-10
DE2828939A1 (de) 1979-01-18
ES471298A1 (es) 1979-11-01
AU3752978A (en) 1980-01-03
GB2000936A (en) 1979-01-17
NO782067L (no) 1979-01-03
BE868647A (fr) 1979-01-02

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