FR2749731B1 - Dispositif de regulation de contraste d'image video - Google Patents
Dispositif de regulation de contraste d'image videoInfo
- 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
Links
- 230000001105 regulatory effect Effects 0.000 title 1
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)
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 |
DE69709576T DE69709576T2 (de) | 1996-06-07 | 1997-06-05 | Vorrichtung zur Einstellung des Kontrasts von Videobildern |
EP97401260A EP0812107B1 (fr) | 1996-06-07 | 1997-06-05 | Dispositif de régulation du contraste d'images vidéo |
US08/870,616 US5940144A (en) | 1996-06-07 | 1997-06-06 | Device for regulating the contrast of video images |
CNB971054983A CN1157945C (zh) | 1996-06-07 | 1997-06-06 | 调节视频图像对比度的设备 |
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)
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 |
JP4130366B2 (ja) | 2001-04-11 | 2008-08-06 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 画像信号コントラスト制御方法 |
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)
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 |
-
1996
- 1996-06-07 FR FR9607045A patent/FR2749731B1/fr not_active Expired - Fee Related
-
1997
- 1997-05-28 JP JP13843197A patent/JP3892529B2/ja not_active Expired - Fee Related
- 1997-06-05 EP EP97401260A patent/EP0812107B1/fr not_active Expired - Lifetime
- 1997-06-05 DE DE69709576T patent/DE69709576T2/de not_active Expired - Fee Related
- 1997-06-06 US US08/870,616 patent/US5940144A/en not_active Expired - Fee Related
- 1997-06-06 CN CNB971054983A patent/CN1157945C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH1065991A (ja) | 1998-03-06 |
CN1172396A (zh) | 1998-02-04 |
EP0812107B1 (fr) | 2002-01-16 |
DE69709576D1 (de) | 2002-02-21 |
US5940144A (en) | 1999-08-17 |
CN1157945C (zh) | 2004-07-14 |
JP3892529B2 (ja) | 2007-03-14 |
FR2749731A1 (fr) | 1997-12-12 |
DE69709576T2 (de) | 2002-08-22 |
EP0812107A1 (fr) | 1997-12-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |