SG87730A1 - Image quality correction circuit - Google Patents
Image quality correction circuitInfo
- Publication number
- SG87730A1 SG87730A1 SG9601746A SG1996001746A SG87730A1 SG 87730 A1 SG87730 A1 SG 87730A1 SG 9601746 A SG9601746 A SG 9601746A SG 1996001746 A SG1996001746 A SG 1996001746A SG 87730 A1 SG87730 A1 SG 87730A1
- Authority
- SG
- Singapore
- Prior art keywords
- image quality
- correction circuit
- quality correction
- circuit
- image
- Prior art date
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
- H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
-
- 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
- H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Picture Signal Circuits (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9142793 | 1993-04-19 | ||
JP32777093 | 1993-12-24 | ||
JP6072319A JPH07231396A (ja) | 1993-04-19 | 1994-04-11 | 画質補正回路 |
Publications (1)
Publication Number | Publication Date |
---|---|
SG87730A1 true SG87730A1 (en) | 2002-04-16 |
Family
ID=27300927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG9601746A SG87730A1 (en) | 1993-04-19 | 1994-04-18 | Image quality correction circuit |
Country Status (6)
Country | Link |
---|---|
US (6) | US5621480A (ja) |
EP (4) | EP1051042B1 (ja) |
JP (1) | JPH07231396A (ja) |
CA (1) | CA2121187C (ja) |
DE (4) | DE69433957T2 (ja) |
SG (1) | SG87730A1 (ja) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0731601B2 (en) * | 1995-03-06 | 2006-10-18 | Matsushita Electric Industrial Co., Ltd. | Video signal noise reduction apparatus |
DE69716710T2 (de) * | 1996-09-16 | 2003-06-12 | Koninkl Philips Electronics Nv | Verbesserung des wahrgenommenen farbübergangs |
WO1998018263A2 (en) * | 1996-10-21 | 1998-04-30 | Philips Electronics N.V. | Sharpness improvement |
USRE38413E1 (en) * | 1997-03-06 | 2004-02-03 | Matsushita Electric Industrial Co. Ltd. | Pure red color detection circuit and color compensation circuit using the same |
JP3556859B2 (ja) * | 1998-09-08 | 2004-08-25 | 富士写真フイルム株式会社 | 画像補正方法、画像補正装置及び記録媒体 |
CA2350712C (en) * | 1998-11-13 | 2004-05-25 | Flexi-Coil Ltd. | Method for color detection in video images |
KR100350978B1 (ko) * | 1999-06-28 | 2002-08-28 | 삼성전자 주식회사 | 고해상도 비디오 기록/재생장치 |
US6807301B1 (en) * | 2000-02-25 | 2004-10-19 | Fujitsu Limited | Image production controlling device, image producing device, image production controlling method, and a storage medium |
JP3540758B2 (ja) * | 2000-09-08 | 2004-07-07 | 三洋電機株式会社 | 単板式カラーカメラにおける水平輪郭信号生成回路 |
JP4086479B2 (ja) * | 2001-03-23 | 2008-05-14 | Necディスプレイソリューションズ株式会社 | 画質改善装置および画質改善方法 |
US20040165081A1 (en) * | 2002-12-05 | 2004-08-26 | Hiroyuki Shibaki | Image processing apparatus, image processing system, and image processing method |
US7463393B2 (en) * | 2003-05-19 | 2008-12-09 | Kabushiki Kaisha Toshiba | Image processing apparatus and image processing method |
US20050094003A1 (en) * | 2003-11-05 | 2005-05-05 | Per Thorell | Methods of processing digital image and/or video data including luminance filtering based on chrominance data and related systems and computer program products |
JP4356452B2 (ja) * | 2003-12-26 | 2009-11-04 | ブラザー工業株式会社 | 画像データ処理装置およびそれを備えた印刷データ作成装置、インクジェット記録装置、画像データ処理プログラム、画像データ処理方法 |
US7382915B2 (en) * | 2004-03-16 | 2008-06-03 | Xerox Corporation | Color to grayscale conversion method and apparatus |
EP1755331A4 (en) * | 2004-06-10 | 2009-04-29 | Sony Corp | PROGRAM, METHOD AND IMAGE PROCESSING DEVICE |
JP5116487B2 (ja) * | 2005-01-26 | 2013-01-09 | ティーピー ビジョン ホールディング ビー ヴィ | スパークル処理 |
KR20070012047A (ko) * | 2005-07-22 | 2007-01-25 | 삼성전자주식회사 | 디지털 영상처리장치 및 그 제어방법 |
KR101364076B1 (ko) | 2005-11-09 | 2014-02-26 | 코닌클리케 필립스 엔.브이. | 디스플레이를 구동하기 위한 픽셀 신호를 처리하는 방법 및장치와 이를 이용한 디스플레이 |
JP4967454B2 (ja) * | 2006-05-23 | 2012-07-04 | ソニー株式会社 | 画像補正回路、画像補正方法および画像表示装置 |
US20080152614A1 (en) * | 2006-12-22 | 2008-06-26 | 3M Innovative Properties Company | Method and kit for skin lesion prevention and/or protection |
JP4829802B2 (ja) * | 2007-01-26 | 2011-12-07 | Necディスプレイソリューションズ株式会社 | 画質改善装置および画質改善方法 |
US7957251B2 (en) * | 2009-02-16 | 2011-06-07 | Agere Systems Inc. | Systems and methods for reduced latency loop recovery |
JP5235759B2 (ja) * | 2009-04-07 | 2013-07-10 | キヤノン株式会社 | 画像処理装置、画像処理方法、及びプログラム |
JP5370761B2 (ja) * | 2009-04-10 | 2013-12-18 | ソニー株式会社 | 映像信号処理装置および表示装置 |
TWI387313B (zh) * | 2009-05-21 | 2013-02-21 | Novatek Microelectronics Corp | 影像處理電路及方法 |
US8218081B2 (en) * | 2009-08-06 | 2012-07-10 | Himax Media Solutions, Inc. | Video standard detector and operation method thereof |
TWI520101B (zh) * | 2014-04-16 | 2016-02-01 | 鈺創科技股份有限公司 | 美化影像中人體膚色的方法、美化影像中人體膚色的裝置、調整影像中人體膚色亮度的方法及調整影像中人體膚色亮度的裝置 |
JP6243296B2 (ja) * | 2014-05-30 | 2017-12-06 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 画像生成装置、放射線断層撮影装置及びプログラム |
GB201510652D0 (en) * | 2015-06-17 | 2015-07-29 | Beers Uk De Ltd | Colour measurement of gemstones |
CN108259706B (zh) * | 2018-04-12 | 2020-10-30 | 京东方科技集团股份有限公司 | 视频信号调节装置及调节方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3034532A1 (de) * | 1979-09-13 | 1981-04-02 | Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka | Kompensationsschaltung zum verbessern der farbaufloesung |
JPH0374970A (ja) * | 1989-08-16 | 1991-03-29 | Toshiba Corp | 輝度信号高域強調回路 |
JPH0576034A (ja) * | 1991-09-10 | 1993-03-26 | Toshiba Corp | 画像信号処理装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5141297B1 (ja) * | 1969-11-24 | 1976-11-09 | ||
JPS55114089A (en) * | 1979-02-23 | 1980-09-03 | Hitachi Ltd | Picture-quality improving circuit of color television receiver |
JPS55145492A (en) * | 1979-05-02 | 1980-11-13 | Hitachi Ltd | Picture quality improving circuit for color television receiver |
JPS5623086A (en) * | 1979-08-02 | 1981-03-04 | Hitachi Ltd | Picture quality improving circuit of color television receiver |
US4316215A (en) * | 1979-09-26 | 1982-02-16 | Matsushita Electric Industrial Co., Ltd. | System for improving reproduction of images in a color television receiver |
US4400721A (en) * | 1981-07-13 | 1983-08-23 | Albert Macovski | Transition system for color television receivers |
US4621290A (en) * | 1984-04-12 | 1986-11-04 | Rca Corporation | Piecewise linear digital signal processor as for digital video vertical detail processing |
JPS6432588A (en) * | 1987-07-28 | 1989-02-02 | Tokyo Electric Co Ltd | Picture quality improving device for color television signal |
JPH0744135Y2 (ja) * | 1988-06-20 | 1995-10-09 | ソニー株式会社 | 輪郭強調回路 |
US5262863A (en) * | 1989-10-06 | 1993-11-16 | Kabushiki Kaisha Toshiba | Video signal processor having an adjustable noise cancelling circuit |
KR0133515B1 (ko) * | 1990-07-21 | 1998-04-22 | 구자홍 | 수직/수평 윤곽 보정시스템 |
JP2756070B2 (ja) * | 1992-04-09 | 1998-05-25 | 三菱電機エンジニアリング株式会社 | 波形整形方法及び波形整形装置並びに搬送色信号の輪郭補正装置 |
JPH06132588A (ja) * | 1992-10-16 | 1994-05-13 | Furukawa Electric Co Ltd:The | 発光素子の光出力制御方法 |
-
1994
- 1994-04-11 JP JP6072319A patent/JPH07231396A/ja active Pending
- 1994-04-12 US US08/226,510 patent/US5621480A/en not_active Expired - Fee Related
- 1994-04-13 CA CA002121187A patent/CA2121187C/en not_active Expired - Fee Related
- 1994-04-18 EP EP00116758A patent/EP1051042B1/en not_active Expired - Lifetime
- 1994-04-18 DE DE69433957T patent/DE69433957T2/de not_active Expired - Fee Related
- 1994-04-18 EP EP00116760A patent/EP1051044B1/en not_active Expired - Lifetime
- 1994-04-18 DE DE69434095T patent/DE69434095T2/de not_active Expired - Fee Related
- 1994-04-18 EP EP94105992A patent/EP0621732B1/en not_active Expired - Lifetime
- 1994-04-18 EP EP00116759A patent/EP1051043B1/en not_active Expired - Lifetime
- 1994-04-18 DE DE69426736T patent/DE69426736T2/de not_active Expired - Fee Related
- 1994-04-18 DE DE69434143T patent/DE69434143T2/de not_active Expired - Fee Related
- 1994-04-18 SG SG9601746A patent/SG87730A1/en unknown
-
1996
- 1996-05-20 US US08/650,952 patent/US5663769A/en not_active Expired - Fee Related
-
1997
- 1997-01-31 US US08/794,240 patent/US5910823A/en not_active Expired - Fee Related
-
1999
- 1999-03-31 US US09/281,802 patent/US6018373A/en not_active Expired - Fee Related
- 1999-03-31 US US09/281,798 patent/US6081302A/en not_active Expired - Fee Related
- 1999-03-31 US US09/281,801 patent/US6023304A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3034532A1 (de) * | 1979-09-13 | 1981-04-02 | Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka | Kompensationsschaltung zum verbessern der farbaufloesung |
JPH0374970A (ja) * | 1989-08-16 | 1991-03-29 | Toshiba Corp | 輝度信号高域強調回路 |
JPH0576034A (ja) * | 1991-09-10 | 1993-03-26 | Toshiba Corp | 画像信号処理装置 |
Also Published As
Publication number | Publication date |
---|---|
US6018373A (en) | 2000-01-25 |
EP0621732B1 (en) | 2001-02-28 |
US5663769A (en) | 1997-09-02 |
DE69426736T2 (de) | 2001-09-20 |
EP1051042B1 (en) | 2004-10-20 |
CA2121187C (en) | 1999-03-30 |
US6081302A (en) | 2000-06-27 |
EP1051044A1 (en) | 2000-11-08 |
DE69434095D1 (de) | 2004-11-25 |
EP1051043A1 (en) | 2000-11-08 |
DE69434143D1 (de) | 2004-12-23 |
DE69433957T2 (de) | 2005-09-08 |
US6023304A (en) | 2000-02-08 |
CA2121187A1 (en) | 1994-10-20 |
DE69426736D1 (de) | 2001-04-05 |
EP1051042A1 (en) | 2000-11-08 |
EP1051044B1 (en) | 2004-08-18 |
US5621480A (en) | 1997-04-15 |
EP0621732A3 (en) | 1996-08-07 |
EP1051043B1 (en) | 2004-11-17 |
EP0621732A2 (en) | 1994-10-26 |
DE69434095T2 (de) | 2005-12-15 |
JPH07231396A (ja) | 1995-08-29 |
DE69433957D1 (de) | 2004-09-23 |
DE69434143T2 (de) | 2005-12-01 |
US5910823A (en) | 1999-06-08 |
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