CA2080605A1 - Systeme video a processeur non lineaire et a processeur de correction de luminosite commandes par un circuit de retroaction - Google Patents
Systeme video a processeur non lineaire et a processeur de correction de luminosite commandes par un circuit de retroactionInfo
- Publication number
- CA2080605A1 CA2080605A1 CA2080605A CA2080605A CA2080605A1 CA 2080605 A1 CA2080605 A1 CA 2080605A1 CA 2080605 A CA2080605 A CA 2080605A CA 2080605 A CA2080605 A CA 2080605A CA 2080605 A1 CA2080605 A1 CA 2080605A1
- Authority
- CA
- Canada
- Prior art keywords
- signal
- processor
- brightness control
- input
- brightness
- 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.)
- Granted
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
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Television Receiver Circuits (AREA)
- Processing Of Color Television Signals (AREA)
- Color Television Image Signal Generators (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Television Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US808,328 | 1991-12-16 | ||
US07/808,328 US5191420A (en) | 1991-12-16 | 1991-12-16 | Video system with feedback controlled "white stretch" processing and brightness compensation |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2080605A1 true CA2080605A1 (fr) | 1993-06-17 |
CA2080605C CA2080605C (fr) | 1998-06-30 |
Family
ID=25198474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002080605A Expired - Fee Related CA2080605C (fr) | 1991-12-16 | 1992-10-15 | Systeme video a processeur non lineaire et a processeur de correction de luminosite commandes par un circuit de retroaction |
Country Status (14)
Country | Link |
---|---|
US (1) | US5191420A (fr) |
EP (1) | EP0547325B1 (fr) |
JP (1) | JP3052029B2 (fr) |
KR (1) | KR100257940B1 (fr) |
CN (1) | CN1042999C (fr) |
AT (1) | ATE136712T1 (fr) |
CA (1) | CA2080605C (fr) |
DE (1) | DE69209795T2 (fr) |
ES (1) | ES2087395T3 (fr) |
HU (1) | HU216459B (fr) |
MX (1) | MX9207296A (fr) |
MY (1) | MY108024A (fr) |
SG (1) | SG77543A1 (fr) |
TR (1) | TR26448A (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5391944A (en) * | 1992-01-22 | 1995-02-21 | Matsushita Electric Industrial Co., Ltd. | Image-tone control circuit and gradient adjusting circuit therefor |
KR100296872B1 (ko) * | 1993-07-22 | 2001-10-24 | 김순택 | 전계방출표시소자로이루어지는디스플레이패널의자동휘도보정장치및그구동방법 |
US5379162A (en) * | 1993-08-19 | 1995-01-03 | International Business Machines Corporation | Customized data recovery procedures selected responsive to readback errors and transducer head and disk parameters |
US5515113A (en) * | 1994-02-28 | 1996-05-07 | Matsushita Electric Industrial Co., Ltd. | Automatic black stretch control for a television receiver |
JP3501252B2 (ja) * | 1995-06-16 | 2004-03-02 | 三菱電機株式会社 | 階調補正装置 |
EP0963111A1 (fr) * | 1998-06-02 | 1999-12-08 | Deutsche Thomson-Brandt Gmbh | Méthode et appareil d'amélioration dynamique du contraste dans des images vidéo |
KR100346840B1 (ko) * | 1999-11-04 | 2002-08-03 | 삼성전자 주식회사 | 화면의 펄럭거림을 최소화하는 흑신장 장치 및 그 방법 |
EP1235427A4 (fr) * | 1999-11-25 | 2006-01-11 | Matsushita Electric Ind Co Ltd | Procede et appareil de correction de gradation, et affichage video |
US6806908B2 (en) * | 2001-08-10 | 2004-10-19 | Koninklijke Philips Electronics N.V. | Cathode current limiting circuit for projection television display systems |
KR20050040849A (ko) * | 2001-11-01 | 2005-05-03 | 톰슨 라이센싱 에스.에이. | 동적 콘트라스트 개선 방법 |
KR100425312B1 (ko) * | 2001-12-11 | 2004-03-30 | 삼성전자주식회사 | 자동 휘도 조정 장치 및 방법 |
JP2003177727A (ja) | 2001-12-13 | 2003-06-27 | Nec Viewtechnology Ltd | 画像表示装置および光量調節方法 |
JP4313996B2 (ja) * | 2002-08-30 | 2009-08-12 | トヨタ自動車株式会社 | 撮像装置 |
KR100449744B1 (ko) * | 2002-10-21 | 2004-09-22 | 삼성전자주식회사 | 영상 처리 장치에서의 화면 밝기 제어 방법 및 장치 |
KR100497395B1 (ko) * | 2003-06-30 | 2005-06-23 | 삼성전자주식회사 | 화질을 자동으로 설정하는 방법 |
KR100608814B1 (ko) * | 2004-07-16 | 2006-08-08 | 엘지전자 주식회사 | 엘씨디 장치의 입력 영상 표시 방법 |
KR20080015626A (ko) | 2006-08-16 | 2008-02-20 | 삼성전자주식회사 | 영상처리장치 및 영상처리방법 |
JP4637812B2 (ja) * | 2006-11-09 | 2011-02-23 | オリンパス株式会社 | 画像信号処理装置、画像信号処理プログラム、画像信号処理方法 |
JP4853337B2 (ja) * | 2007-03-09 | 2012-01-11 | ソニー株式会社 | 信号変換装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56107674A (en) * | 1980-01-31 | 1981-08-26 | Sony Corp | Gradation correcting device of video signal |
US4599643A (en) * | 1983-12-29 | 1986-07-08 | Rca Corporation | Apparatus responsive to plural color video signals for amplitude limiting the video signals to assist beam current limiting |
US4980756A (en) * | 1989-08-25 | 1990-12-25 | Rca Licensing Corporation | Control signal generator for a television system |
US5003394A (en) * | 1989-08-25 | 1991-03-26 | Rca Licensing Corporation | Dynamic video system including automatic contrast and "white-stretch" processing sections |
US4982287A (en) * | 1989-11-01 | 1991-01-01 | Rca Licensing Corporation | Control of brightness level adapted to control of contrast |
-
1991
- 1991-12-16 US US07/808,328 patent/US5191420A/en not_active Expired - Lifetime
-
1992
- 1992-10-13 HU HU9203219A patent/HU216459B/hu not_active IP Right Cessation
- 1992-10-15 AT AT92117573T patent/ATE136712T1/de not_active IP Right Cessation
- 1992-10-15 EP EP92117573A patent/EP0547325B1/fr not_active Expired - Lifetime
- 1992-10-15 ES ES92117573T patent/ES2087395T3/es not_active Expired - Lifetime
- 1992-10-15 SG SG1996003489A patent/SG77543A1/en unknown
- 1992-10-15 DE DE69209795T patent/DE69209795T2/de not_active Expired - Lifetime
- 1992-10-15 CA CA002080605A patent/CA2080605C/fr not_active Expired - Fee Related
- 1992-10-20 MY MYPI92001881A patent/MY108024A/en unknown
- 1992-11-09 JP JP4339394A patent/JP3052029B2/ja not_active Expired - Fee Related
- 1992-11-10 KR KR1019920020995A patent/KR100257940B1/ko not_active IP Right Cessation
- 1992-11-12 CN CN92113283A patent/CN1042999C/zh not_active Expired - Fee Related
- 1992-11-18 TR TR92/1119A patent/TR26448A/xx unknown
- 1992-12-15 MX MX9207296A patent/MX9207296A/es not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0547325A2 (fr) | 1993-06-23 |
HU9203219D0 (en) | 1993-03-01 |
HUT65447A (en) | 1994-06-28 |
HU216459B (hu) | 1999-06-28 |
TR26448A (tr) | 1995-03-15 |
SG77543A1 (en) | 2001-01-16 |
JP3052029B2 (ja) | 2000-06-12 |
MX9207296A (es) | 1993-11-01 |
ATE136712T1 (de) | 1996-04-15 |
DE69209795T2 (de) | 1996-11-07 |
US5191420A (en) | 1993-03-02 |
DE69209795D1 (de) | 1996-05-15 |
EP0547325B1 (fr) | 1996-04-10 |
CN1042999C (zh) | 1999-04-14 |
EP0547325A3 (fr) | 1993-07-14 |
KR930015795A (ko) | 1993-07-24 |
MY108024A (en) | 1996-07-30 |
CA2080605C (fr) | 1998-06-30 |
KR100257940B1 (ko) | 2000-06-01 |
CN1073567A (zh) | 1993-06-23 |
JPH05308592A (ja) | 1993-11-19 |
ES2087395T3 (es) | 1996-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |