DE69127493T2 - Gerät zur Verarbeitung eines Fernsehsignals - Google Patents
Gerät zur Verarbeitung eines FernsehsignalsInfo
- Publication number
- DE69127493T2 DE69127493T2 DE69127493T DE69127493T DE69127493T2 DE 69127493 T2 DE69127493 T2 DE 69127493T2 DE 69127493 T DE69127493 T DE 69127493T DE 69127493 T DE69127493 T DE 69127493T DE 69127493 T2 DE69127493 T2 DE 69127493T2
- Authority
- DE
- Germany
- Prior art keywords
- processing
- television signal
- television
- signal
- 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
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
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11459290A JPH048068A (ja) | 1990-04-26 | 1990-04-26 | デジタル画像処理回路 |
JP11459590A JPH048069A (ja) | 1990-04-26 | 1990-04-26 | デジタル画像処理回路 |
JP11196290A JP2832066B2 (ja) | 1990-04-27 | 1990-04-27 | コントラスト調整装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69127493D1 DE69127493D1 (de) | 1997-10-09 |
DE69127493T2 true DE69127493T2 (de) | 1998-01-08 |
Family
ID=27312137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69127493T Expired - Fee Related DE69127493T2 (de) | 1990-04-26 | 1991-04-23 | Gerät zur Verarbeitung eines Fernsehsignals |
Country Status (4)
Country | Link |
---|---|
US (1) | US5210610A (de) |
EP (1) | EP0454417B1 (de) |
CA (1) | CA2040672C (de) |
DE (1) | DE69127493T2 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4203092A1 (de) * | 1992-02-04 | 1993-08-05 | Philips Patentverwaltung | Verfahren zur kontrastkorrektur |
DE4239365A1 (de) * | 1992-11-24 | 1994-05-26 | Philips Patentverwaltung | Schaltungsanordnung zum Verarbeiten eines Videosignals |
US5451948A (en) * | 1994-02-28 | 1995-09-19 | Cubic Communications, Inc. | Apparatus and method for combining analog and digital automatic gain control in receivers with digital signal processing |
US5446503A (en) * | 1994-04-11 | 1995-08-29 | Mitsubishi Semiconductor America, Inc. | Vertical detail enhancement with stepped return coring |
GB2289983B (en) * | 1994-06-01 | 1996-10-16 | Simage Oy | Imaging devices,systems and methods |
US6035013A (en) * | 1994-06-01 | 2000-03-07 | Simage O.Y. | Radiographic imaging devices, systems and methods |
JP3685575B2 (ja) * | 1997-01-30 | 2005-08-17 | 三菱電機株式会社 | ディスプレイ装置 |
US6151018A (en) * | 1998-03-14 | 2000-11-21 | Nuwave Technologies, Inc. | Video picture improving apparatus and method |
US6337676B1 (en) * | 1998-03-30 | 2002-01-08 | Kabushiki Kaisha Toshiba | Flat-panel display device |
EP1372340B1 (de) * | 1998-06-02 | 2006-12-13 | Deutsche Thomson-Brandt Gmbh | Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern |
EP0963111A1 (de) | 1998-06-02 | 1999-12-08 | Deutsche Thomson-Brandt Gmbh | Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern |
TWI249630B (en) * | 1999-05-10 | 2006-02-21 | Matsushita Electric Ind Co Ltd | Image display device and method for displaying image |
JP3649043B2 (ja) * | 1999-06-07 | 2005-05-18 | セイコーエプソン株式会社 | 画像表示装置及び方法、並びに、画像処理装置及び方法 |
EP1075140A1 (de) * | 1999-08-02 | 2001-02-07 | Koninklijke Philips Electronics N.V. | Verbesserung eines Videosignals |
JP3741212B2 (ja) * | 2001-07-26 | 2006-02-01 | セイコーエプソン株式会社 | 画像処理システム、プロジェクタ、プログラム、情報記憶媒体および白黒伸張処理方法 |
JP3838177B2 (ja) * | 2002-08-22 | 2006-10-25 | 株式会社日立製作所 | 映像表示方法、映像表示装置及びそれに用いるコントラスト調整回路 |
JP4927311B2 (ja) * | 2003-08-27 | 2012-05-09 | 株式会社日立製作所 | 映像表示装置、それに用いる表示部駆動回路及び映像表示方法 |
US8207931B2 (en) * | 2007-05-31 | 2012-06-26 | Hong Kong Applied Science and Technology Research Institute Company Limited | Method of displaying a low dynamic range image in a high dynamic range |
JP4977573B2 (ja) * | 2007-10-11 | 2012-07-18 | オンセミコンダクター・トレーディング・リミテッド | 映像信号処理装置におけるオートゲインコントロール回路 |
TWI387335B (zh) * | 2008-05-26 | 2013-02-21 | Novatek Microelectronics Corp | 信號調節電路及其視訊裝置 |
EP2769540B1 (de) | 2011-10-20 | 2018-11-28 | Dolby Laboratories Licensing Corporation | Verfahren und system zur entzerrung von videoinhalten |
JP5330570B1 (ja) | 2012-05-31 | 2013-10-30 | 株式会社東芝 | 映像処理装置および方法 |
US9008458B2 (en) | 2013-02-07 | 2015-04-14 | Raytheon Company | Local area processing using packed distribution functions |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3790706A (en) * | 1972-05-25 | 1974-02-05 | Boeing Co | Automatic video contrast control circuit |
US4187519A (en) * | 1978-08-17 | 1980-02-05 | Rockwell International Corporation | System for expanding the video contrast of an image |
US4231065A (en) * | 1979-01-11 | 1980-10-28 | Honeywell Inc. | Local area contrast enhancement device |
FR2456448A1 (fr) * | 1979-05-11 | 1980-12-05 | Thomson Csf | Dispositif de commande automatique de la fonction de transfert d'un systeme de transmission videofrequence en vue d'ameliorer la perception des images |
JPS56107674A (en) * | 1980-01-31 | 1981-08-26 | Sony Corp | Gradation correcting device of video signal |
US4470067A (en) * | 1980-12-27 | 1984-09-04 | Japan Broadcasting Corp. | Automatic gain control apparatus |
FR2506549A1 (fr) * | 1981-05-22 | 1982-11-26 | Thomson Csf | Dispositif de correction des informations couleur fournies par les tubes analyseurs d'une camera en vue d'ameliorer la perception des images |
JPS59125176A (ja) * | 1982-12-30 | 1984-07-19 | インタ−ナシヨナル ビジネス マシ−ンズ コ−ポレ−シヨン | ビデオイメ−ジのシエ−ジング効果の補正装置 |
JPS59163953A (ja) * | 1983-03-08 | 1984-09-17 | Canon Inc | 画像処理装置 |
US4731662A (en) * | 1985-03-21 | 1988-03-15 | Canon Kabushiki Kaisha | Image processing method for processing an image signal differently depending on the range of an image characteristic thereof relative to the range within which an output device can reproduce the image characteristic |
FR2581775B1 (fr) * | 1985-05-10 | 1990-03-23 | Thomson Cgr | Procede de reglage de l'echelle des gris dans la reproduction d'images numerisees et systeme mettant en oeuvre ce procede |
FR2604841B1 (fr) * | 1986-10-07 | 1988-11-25 | Etude Signal | Dispositif de transformation d'un signal par stabilisation et rehaussement de la dynamique dudit signal |
DE3714861A1 (de) * | 1987-05-05 | 1988-11-24 | Fraunhofer Ges Forschung | Verfahren und vorrichtung zur aufbereitung von videosignalen |
-
1991
- 1991-04-17 CA CA002040672A patent/CA2040672C/en not_active Expired - Lifetime
- 1991-04-18 US US07/687,454 patent/US5210610A/en not_active Expired - Lifetime
- 1991-04-23 DE DE69127493T patent/DE69127493T2/de not_active Expired - Fee Related
- 1991-04-23 EP EP91303645A patent/EP0454417B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5210610A (en) | 1993-05-11 |
DE69127493D1 (de) | 1997-10-09 |
CA2040672C (en) | 1995-05-30 |
EP0454417A3 (en) | 1992-03-04 |
EP0454417B1 (de) | 1997-09-03 |
EP0454417A2 (de) | 1991-10-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |