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FR2749731B1 - Dispositif de regulation de contraste d'image video - Google Patents

Dispositif de regulation de contraste d'image video

Info

Publication number
FR2749731B1
FR2749731B1 FR9607045A FR9607045A FR2749731B1 FR 2749731 B1 FR2749731 B1 FR 2749731B1 FR 9607045 A FR9607045 A FR 9607045A FR 9607045 A FR9607045 A FR 9607045A FR 2749731 B1 FR2749731 B1 FR 2749731B1
Authority
FR
France
Prior art keywords
video image
image contrast
regulating video
regulating
contrast
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.)
Expired - Fee Related
Application number
FR9607045A
Other languages
English (en)
Other versions
FR2749731A1 (fr
Inventor
Kuno Lenz
Sigrid Hauser
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.)
Vantiva SA
Original Assignee
Thomson Multimedia SA
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 Thomson Multimedia SA filed Critical Thomson Multimedia SA
Priority to FR9607045A priority Critical patent/FR2749731B1/fr
Priority to JP13843197A priority patent/JP3892529B2/ja
Priority to EP97401260A priority patent/EP0812107B1/fr
Priority to DE69709576T priority patent/DE69709576T2/de
Priority to CNB971054983A priority patent/CN1157945C/zh
Priority to US08/870,616 priority patent/US5940144A/en
Publication of FR2749731A1 publication Critical patent/FR2749731A1/fr
Application granted granted Critical
Publication of FR2749731B1 publication Critical patent/FR2749731B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • 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
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
FR9607045A 1996-06-07 1996-06-07 Dispositif de regulation de contraste d'image video Expired - Fee Related FR2749731B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR9607045A FR2749731B1 (fr) 1996-06-07 1996-06-07 Dispositif de regulation de contraste d'image video
JP13843197A JP3892529B2 (ja) 1996-06-07 1997-05-28 ビデオ画像のコントラストを調整する装置
EP97401260A EP0812107B1 (fr) 1996-06-07 1997-06-05 Dispositif de régulation du contraste d'images vidéo
DE69709576T DE69709576T2 (de) 1996-06-07 1997-06-05 Vorrichtung zur Einstellung des Kontrasts von Videobildern
CNB971054983A CN1157945C (zh) 1996-06-07 1997-06-06 调节视频图像对比度的设备
US08/870,616 US5940144A (en) 1996-06-07 1997-06-06 Device for regulating the contrast of video images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9607045A FR2749731B1 (fr) 1996-06-07 1996-06-07 Dispositif de regulation de contraste d'image video

Publications (2)

Publication Number Publication Date
FR2749731A1 FR2749731A1 (fr) 1997-12-12
FR2749731B1 true FR2749731B1 (fr) 2000-08-04

Family

ID=9492803

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9607045A Expired - Fee Related FR2749731B1 (fr) 1996-06-07 1996-06-07 Dispositif de regulation de contraste d'image video

Country Status (6)

Country Link
US (1) US5940144A (fr)
EP (1) EP0812107B1 (fr)
JP (1) JP3892529B2 (fr)
CN (1) CN1157945C (fr)
DE (1) DE69709576T2 (fr)
FR (1) FR2749731B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3494555B2 (ja) 1997-07-14 2004-02-09 株式会社日立製作所 表示装置及び表示方法
KR100333333B1 (ko) * 1998-12-22 2002-06-20 윤종용 영상신호 처리 시스템의 색신호 처리장치
JP2002077641A (ja) * 2000-08-30 2002-03-15 Matsushita Electric Ind Co Ltd ファクシミリ装置
CN1305319C (zh) 2001-04-11 2007-03-14 皇家菲利浦电子有限公司 图像信号对比度控制
JP2005057621A (ja) * 2003-08-07 2005-03-03 Sanyo Electric Co Ltd 映像信号処理回路
JP4774757B2 (ja) * 2004-09-17 2011-09-14 株式会社ニコン 画像処理装置、画像処理プログラム、電子カメラ、および画像処理方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0657066B2 (ja) * 1984-12-20 1994-07-27 キヤノン株式会社 カラ−調整装置
JP2515869B2 (ja) * 1988-11-28 1996-07-10 株式会社日立製作所 ビデオ信号処理回路
FR2640839B1 (fr) * 1988-12-20 1991-03-15 Portenseigne Radiotechnique Appareil de reproduction d'image video muni d'un reglage de contraste, et procede de reglage du contraste d'un tel appareil de reproduction
US4980756A (en) * 1989-08-25 1990-12-25 Rca Licensing Corporation Control signal generator for a television system
EP0589513B1 (fr) * 1992-09-22 1998-12-02 Koninklijke Philips Electronics N.V. Dispositif de traitement d'un signal d'image
JP2876934B2 (ja) * 1993-05-31 1999-03-31 日本電気株式会社 画像のコントラスト強調方法及び装置
JP3134660B2 (ja) * 1994-04-14 2001-02-13 松下電器産業株式会社 色変換方法および色変換装置

Also Published As

Publication number Publication date
DE69709576D1 (de) 2002-02-21
DE69709576T2 (de) 2002-08-22
JP3892529B2 (ja) 2007-03-14
CN1172396A (zh) 1998-02-04
US5940144A (en) 1999-08-17
JPH1065991A (ja) 1998-03-06
EP0812107A1 (fr) 1997-12-10
FR2749731A1 (fr) 1997-12-12
CN1157945C (zh) 2004-07-14
EP0812107B1 (fr) 2002-01-16

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Legal Events

Date Code Title Description
ST Notification of lapse