ES2096568T3 - Un sistema de video dinamico que incluye secciones de tratamiento del contraste automatico y de "extension del blanco". - Google Patents
Un sistema de video dinamico que incluye secciones de tratamiento del contraste automatico y de "extension del blanco".Info
- Publication number
- ES2096568T3 ES2096568T3 ES90115908T ES90115908T ES2096568T3 ES 2096568 T3 ES2096568 T3 ES 2096568T3 ES 90115908 T ES90115908 T ES 90115908T ES 90115908 T ES90115908 T ES 90115908T ES 2096568 T3 ES2096568 T3 ES 2096568T3
- Authority
- ES
- Spain
- Prior art keywords
- luminance
- white
- sections
- automatic contrast
- video system
- 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 - Lifetime
Links
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
Classifications
-
- 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
-
- 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
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/52—Automatic gain control
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Processing Of Color Television Signals (AREA)
- Picture Signal Circuits (AREA)
- Controls And Circuits For Display Device (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
SE DESCRIBE UN SISTEMA DE TELEVISION, INCLUYENDO SECCIONES PARA LIMITAR IMPULSOS DE CRESTA DEL BLANCO A UN DISPOSITIVO DE PRESENTACION (POR EJEMPLO, DEL TIPO DE VISTA DIRECTA O DE PROYECCION), EN TANTO SE MANTIENEN RELATIVAMENTE ALTOS EL CONTRASTE SUBJETIVO DE IMAGENES Y EL BRILLO. ESPECIFICAMENTE, EL SISTEMA INCLUYE UNA SECCION DE CONTROL DE CONTRASTE AUTOMATICO (29, 31, 33, 9) PARA CONTROLAR LA AMPLITUD DE LA SEÑAL DE LUMINANCIA EN RESPUESTA AL VALOR PICO DE UNA SEÑAL DE COMPONENTE DE IMAGEN REPRESENTATIVA DE LUMINANCIA, PRECEDIDA POR UNA SECCION (5) DE CONTROL DE "COMPRESION DEL BLANCO", PARA DESTACAR LOS COMPONENTES DE LUMINANCIA DE ALCANCE MEDIO RESPECTO A LOS COMPONENTES DE LUMINANCIA DE GRAN ALCANCE, COMO UNA FUNCION DEL VALOR PROMEDIO (35) DEL COMPONENTE DE IMAGENES REPRESENTATIVAS DE LUMINANCIA. SIENDO ASI, PUEDEN REDUCIRSE LA FLORACION DE MANCHAS O PUNTOS Y LA SATURACION DE LA ETAPA EXCITADORA DE LA PANTALLA, EN TANTO SE PROPORCIONAN IMAGENES BRILLANTES, SUBJETIVAMENTE NITIDAS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/398,845 US5003394A (en) | 1989-08-25 | 1989-08-25 | Dynamic video system including automatic contrast and "white-stretch" processing sections |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2096568T3 true ES2096568T3 (es) | 1997-03-16 |
Family
ID=23577019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90115908T Expired - Lifetime ES2096568T3 (es) | 1989-08-25 | 1990-08-20 | Un sistema de video dinamico que incluye secciones de tratamiento del contraste automatico y de "extension del blanco". |
Country Status (15)
Country | Link |
---|---|
US (1) | US5003394A (es) |
EP (1) | EP0414183B1 (es) |
JP (1) | JPH0828850B2 (es) |
KR (1) | KR0169964B1 (es) |
CN (1) | CN1031091C (es) |
AT (1) | ATE145310T1 (es) |
CA (1) | CA2021094C (es) |
DE (1) | DE69029110T2 (es) |
ES (1) | ES2096568T3 (es) |
FI (1) | FI97513C (es) |
MY (1) | MY106733A (es) |
PT (1) | PT95105B (es) |
RU (1) | RU2100911C1 (es) |
SG (1) | SG72626A1 (es) |
TR (1) | TR26342A (es) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0437263A (ja) * | 1990-05-31 | 1992-02-07 | Matsushita Electric Ind Co Ltd | 階調補正装置 |
US5396300A (en) * | 1990-05-31 | 1995-03-07 | Matsushita Electric Industrial Co., Ltd. | Contrast correction device for correcting video signal contrast by varying luminance signal |
JP2784839B2 (ja) * | 1990-07-17 | 1998-08-06 | 松下電器産業株式会社 | 映像信号の階調補正装置 |
US5125046A (en) * | 1990-07-26 | 1992-06-23 | Ronald Siwoff | Digitally enhanced imager for the visually impaired |
US5257108A (en) * | 1990-08-06 | 1993-10-26 | Koji Muraoka | Video signal processing circuit for improving contrast for an LCD display |
ES2043513B1 (es) * | 1991-07-17 | 1994-08-01 | Bertran Electronica Sa | Circuito procesador no lineal de video para televisores en color. |
US5847773A (en) * | 1991-08-30 | 1998-12-08 | Thomson Consumer Electronics, Inc. | Video system including apparatus for deactivating an automatic control arrangement |
US5162902A (en) * | 1991-12-16 | 1992-11-10 | Thomson Consumer Electronics, Inc. | Non-linear luminance signal processor responsive to average picture level (APL) of displayed image |
US5191420A (en) * | 1991-12-16 | 1993-03-02 | Thomson Consumer Electronics, Inc. | Video system with feedback controlled "white stretch" processing and brightness compensation |
JP3255677B2 (ja) * | 1992-01-14 | 2002-02-12 | 松下電器産業株式会社 | 自動階調補正回路と輝度制御方法 |
US5317400A (en) * | 1992-05-22 | 1994-05-31 | Thomson Consumer Electronics, Inc. | Non-linear customer contrast control for a color television with autopix |
US5245434A (en) * | 1992-05-22 | 1993-09-14 | Thomson Consumer Electronics, Inc. | Autopix circuit with inserted vertical blanking |
DE69319960T2 (de) * | 1992-05-22 | 1998-12-10 | Thomson Consumer Electronics, Inc., Indianapolis, Ind. | Nichtlineare Video-Signalprozessor unter Verwendung von Bildelementanalyse |
US5303056A (en) * | 1992-09-14 | 1994-04-12 | Eastman Kodak Company | Dynamic gain correction for CRT printing |
EP0589513B1 (en) * | 1992-09-22 | 1998-12-02 | Koninklijke Philips Electronics N.V. | Picture signal processor |
US5872596A (en) * | 1992-09-28 | 1999-02-16 | Canon Kabushiki Kaisha | Device for widening the dynamic range of solid-state image pickup elements |
CN1135140A (zh) * | 1995-02-27 | 1996-11-06 | 松下电器产业株式会社 | 用于多重图像显示的补偿电压发生装置及其视频显示装置 |
JP3501252B2 (ja) * | 1995-06-16 | 2004-03-02 | 三菱電機株式会社 | 階調補正装置 |
SG64404A1 (en) * | 1996-11-06 | 1999-04-27 | Sgs Thomson Microelectric Asia | A method & apparatus for correcting colour difference signals |
KR100263862B1 (ko) * | 1998-05-18 | 2000-08-16 | 김순택 | 투사 표시관의 구동 방법 |
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 |
JP3661168B2 (ja) * | 1999-11-25 | 2005-06-15 | 松下電器産業株式会社 | 階調補正装置、階調補正方法、及び映像表示装置 |
KR100393219B1 (ko) * | 2001-03-13 | 2003-07-31 | 삼성전자주식회사 | 자동 빔 전류 제한 회로 |
JP4313996B2 (ja) * | 2002-08-30 | 2009-08-12 | トヨタ自動車株式会社 | 撮像装置 |
KR100497395B1 (ko) * | 2003-06-30 | 2005-06-23 | 삼성전자주식회사 | 화질을 자동으로 설정하는 방법 |
JP2005057621A (ja) * | 2003-08-07 | 2005-03-03 | Sanyo Electric Co Ltd | 映像信号処理回路 |
JP4214480B2 (ja) * | 2004-04-21 | 2009-01-28 | ソニー株式会社 | 画像処理装置および方法、並びにプログラム |
KR20080015626A (ko) * | 2006-08-16 | 2008-02-20 | 삼성전자주식회사 | 영상처리장치 및 영상처리방법 |
US8525934B2 (en) * | 2008-01-30 | 2013-09-03 | Sharp Kabushiki Kaisha | Video display apparatus for adjusting the degree of amplification of the input image according to image characteristics |
CN101923822A (zh) * | 2009-06-17 | 2010-12-22 | 康佳集团股份有限公司 | 一种调节背光亮度的方法、***及电视机 |
CN105303586B (zh) * | 2014-07-16 | 2018-05-11 | 深圳Tcl新技术有限公司 | 获取直方图的方法、亮度动态调整的方法及图像处理装置 |
Family Cites Families (10)
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 |
JPS60177551U (ja) * | 1984-04-28 | 1985-11-26 | シャープ株式会社 | テレビのコントラスト及び輝度調節装置 |
US4651210A (en) * | 1984-12-24 | 1987-03-17 | Rca Corporation | Adjustable gamma controller |
FR2575885B1 (fr) * | 1985-01-04 | 1987-02-20 | Thomson Csf | Renforcateur de contraste pour images video |
JPH071924B2 (ja) * | 1986-12-22 | 1995-01-11 | 富士写真フイルム株式会社 | 映像信号エツジ強調処理装置 |
FR2616285B1 (fr) * | 1987-06-05 | 1994-05-06 | Thomson Semiconducteurs | Dispositif de reglage des frequences minimale et maximale d'un signal video module en frequence |
US4937671A (en) * | 1988-12-28 | 1990-06-26 | Zenith Electronics Corporation | Digital video black expander |
US4937670A (en) * | 1989-01-31 | 1990-06-26 | Rca Licensing Corporation | Peak detector with feedback |
US4947253A (en) * | 1989-04-18 | 1990-08-07 | Rca Licensing Corporation | Brightness modulator for closed loop compensation of black level |
-
1989
- 1989-08-25 US US07/398,845 patent/US5003394A/en not_active Expired - Lifetime
-
1990
- 1990-07-12 CA CA002021094A patent/CA2021094C/en not_active Expired - Fee Related
- 1990-07-25 MY MYPI90001235A patent/MY106733A/en unknown
- 1990-08-17 FI FI904091A patent/FI97513C/fi not_active IP Right Cessation
- 1990-08-20 ES ES90115908T patent/ES2096568T3/es not_active Expired - Lifetime
- 1990-08-20 AT AT90115908T patent/ATE145310T1/de not_active IP Right Cessation
- 1990-08-20 DE DE69029110T patent/DE69029110T2/de not_active Expired - Lifetime
- 1990-08-20 EP EP90115908A patent/EP0414183B1/en not_active Expired - Lifetime
- 1990-08-20 SG SG1996003450A patent/SG72626A1/en unknown
- 1990-08-21 TR TR90/0798A patent/TR26342A/xx unknown
- 1990-08-22 KR KR1019900012943A patent/KR0169964B1/ko not_active IP Right Cessation
- 1990-08-24 CN CN90107181A patent/CN1031091C/zh not_active Expired - Lifetime
- 1990-08-24 RU SU904830905A patent/RU2100911C1/ru active
- 1990-08-24 JP JP2221466A patent/JPH0828850B2/ja not_active Expired - Fee Related
- 1990-08-24 PT PT95105A patent/PT95105B/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE69029110T2 (de) | 1997-05-07 |
DE69029110D1 (de) | 1996-12-19 |
SG72626A1 (en) | 2000-05-23 |
US5003394A (en) | 1991-03-26 |
ATE145310T1 (de) | 1996-11-15 |
CN1031091C (zh) | 1996-02-21 |
JPH0391380A (ja) | 1991-04-16 |
FI97513C (fi) | 1996-12-27 |
RU2100911C1 (ru) | 1997-12-27 |
KR910005675A (ko) | 1991-03-30 |
KR0169964B1 (ko) | 1999-03-20 |
CA2021094A1 (en) | 1991-02-26 |
CN1049766A (zh) | 1991-03-06 |
FI97513B (fi) | 1996-09-13 |
JPH0828850B2 (ja) | 1996-03-21 |
MY106733A (en) | 1995-07-31 |
EP0414183B1 (en) | 1996-11-13 |
EP0414183A3 (en) | 1992-10-14 |
CA2021094C (en) | 2000-09-26 |
FI904091A0 (fi) | 1990-08-17 |
PT95105A (pt) | 1992-03-31 |
TR26342A (tr) | 1995-03-15 |
EP0414183A2 (en) | 1991-02-27 |
PT95105B (pt) | 1998-06-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2096568T3 (es) | Un sistema de video dinamico que incluye secciones de tratamiento del contraste automatico y de "extension del blanco". | |
EP0402137A3 (en) | Projection type image display apparatus | |
IL109898A (en) | Projection system for projecting a color video picture and transformation optical system for same | |
KR910017863A (ko) | 부가적문자 디스플레이를 갖는 텔레비젼 수신기 | |
MY105333A (en) | Television on-screen character display syatem with provisions for edging characters. | |
KR840003175A (ko) | 자동 비데오신호 피킹 및 칼라제어 | |
MY105963A (en) | Television apparatus with picture in picture processing | |
GB1360858A (en) | Signal processing arrangement for a colour television camera | |
FR2413836A1 (fr) | Dispositif d'affichage numerique en couleur | |
ES2056921T3 (es) | Control de imagen sensible a la luz ambiental, manual y automatico, para un receptor de television. | |
ES2087426T3 (es) | Dispositivo de presentacion de imagenes en colores y camara de color. | |
MY109844A (en) | Television receiver with partially by-passed non-linear luminance signal processor. | |
ES2095866T3 (es) | Procesamiento de señales de video. | |
KR920022016A (ko) | 현미경 | |
KR900001242A (ko) | 텔레비젼 수신기 | |
Newell et al. | Visibility of small luminance perturbations in television displays | |
KR850002388A (ko) | 피구(皮溝) 또는 주름의 깊이의 측정방법 및 장치 | |
JPS6486682A (en) | Video projector | |
KR960003341A (ko) | 모니터의 뮤트신호 발생회로 | |
JP2611032B2 (ja) | 液晶表示装置 | |
JPH0727733Y2 (ja) | 輝度・コントラスト制御回路 | |
MX9303615A (es) | Aparato excitador de cinescopio, con incremento de contraste. | |
ES2104725T3 (es) | Disposicion limitadora de la corriente de haz que tiene un umbral sensible a la amplitud de pico. | |
JPS57205954A (en) | Scanning color electro microscope | |
TH17933EX (th) | เครื่องรับโทรทัศน์ที่มีตัวประมวลสัญญาณส่องสว่างไม่เชิงเส้นแบบเบี่ยงบางส่วน |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
Ref document number: 414183 Country of ref document: ES |