SG72626A1 - A dynamic video system including automatic contrast and white-stretch processing sections - Google Patents

A dynamic video system including automatic contrast and white-stretch processing sections

Info

Publication number
SG72626A1
SG72626A1 SG1996003450A SG1996003450A SG72626A1 SG 72626 A1 SG72626 A1 SG 72626A1 SG 1996003450 A SG1996003450 A SG 1996003450A SG 1996003450 A SG1996003450 A SG 1996003450A SG 72626 A1 SG72626 A1 SG 72626A1
Authority
SG
Singapore
Prior art keywords
luminance
white
automatic contrast
system including
video system
Prior art date
Application number
SG1996003450A
Other languages
English (en)
Inventor
William Adam Lagoni
Original Assignee
Thomson Consumer Electronics
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson Consumer Electronics filed Critical Thomson Consumer Electronics
Publication of SG72626A1 publication Critical patent/SG72626A1/en

Links

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)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
SG1996003450A 1989-08-25 1990-08-20 A dynamic video system including automatic contrast and white-stretch processing sections SG72626A1 (en)

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
SG72626A1 true SG72626A1 (en) 2000-05-23

Family

ID=23577019

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996003450A SG72626A1 (en) 1989-08-25 1990-08-20 A dynamic video system including automatic contrast and white-stretch processing sections

Country Status (15)

Country Link
US (1) US5003394A (fi)
EP (1) EP0414183B1 (fi)
JP (1) JPH0828850B2 (fi)
KR (1) KR0169964B1 (fi)
CN (1) CN1031091C (fi)
AT (1) ATE145310T1 (fi)
CA (1) CA2021094C (fi)
DE (1) DE69029110T2 (fi)
ES (1) ES2096568T3 (fi)
FI (1) FI97513C (fi)
MY (1) MY106733A (fi)
PT (1) PT95105B (fi)
RU (1) RU2100911C1 (fi)
SG (1) SG72626A1 (fi)
TR (1) TR26342A (fi)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
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
ES2118854T3 (es) * 1992-05-22 1998-10-01 Thomson Consumer Electronics Procesador de señal de video que emplea analisis de elementos de imagen.
US5245434A (en) * 1992-05-22 1993-09-14 Thomson Consumer Electronics, Inc. Autopix circuit with inserted vertical blanking
US5317400A (en) * 1992-05-22 1994-05-31 Thomson Consumer Electronics, Inc. Non-linear customer contrast control for a color television with autopix
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
WO2001039495A1 (fr) * 1999-11-25 2001-05-31 Matsushita Electric Industrial Co., Ltd. Procede et appareil de correction de gradation, et affichage video
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、系统及电视机
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FI97513B (fi) 1996-09-13
CA2021094C (en) 2000-09-26
EP0414183A2 (en) 1991-02-27
TR26342A (tr) 1995-03-15
CA2021094A1 (en) 1991-02-26
FI97513C (fi) 1996-12-27
EP0414183A3 (en) 1992-10-14
RU2100911C1 (ru) 1997-12-27
PT95105B (pt) 1998-06-30
KR0169964B1 (ko) 1999-03-20
PT95105A (pt) 1992-03-31
DE69029110D1 (de) 1996-12-19
ATE145310T1 (de) 1996-11-15
CN1049766A (zh) 1991-03-06
JPH0391380A (ja) 1991-04-16
ES2096568T3 (es) 1997-03-16
MY106733A (en) 1995-07-31
JPH0828850B2 (ja) 1996-03-21
KR910005675A (ko) 1991-03-30
FI904091A0 (fi) 1990-08-17
DE69029110T2 (de) 1997-05-07
EP0414183B1 (en) 1996-11-13
CN1031091C (zh) 1996-02-21
US5003394A (en) 1991-03-26

Similar Documents

Publication Publication Date Title
EP0414183A3 (en) A dynamic video system including automatic contrast and white-stretch processing sections
CA2040929A1 (en) Television apparatus
Kubota et al. The Videomelter
EP0425993A3 (en) Control of brightness level adapted to control of picture
CA2083312A1 (en) Beam current limiting arrangement for a televison system with picture-in-picture provisions
KR910017863A (ko) 부가적문자 디스플레이를 갖는 텔레비젼 수신기
MY105333A (en) Television on-screen character display syatem with provisions for edging characters.
MY106878A (en) Contrast corrector for video signal.
MY132089A (en) Automatic brightness limiter automatic control circuit, contrast limiter control circuit, luminance/ color difference signal processor and video display apparatus
CA2114256A1 (en) Video Circuit
CA2128758A1 (en) Gradation Compensating Apparatus for a Video Signal
MY114354A (en) Autopix circuit with inserted vertical blanking
CA2099832A1 (en) Color picture display apparatus
JPS6486682A (en) Video projector
MY111249A (en) Video system including apparatus for deactivating an automatic control arrangement
KR910005801Y1 (ko) Tv의 백폭 제한 회로
JPH0727733Y2 (ja) 輝度・コントラスト制御回路
KR940002570Y1 (ko) 텔레텍스트 수신기의 휘도신호 제어회로
JP2611032B2 (ja) 液晶表示装置
KR960009308B1 (en) Screen compensating apparatus in tv monitor
JPS5442929A (en) Television picture receiver
JPS56149882A (en) Index system color television receiver
TH11268EX (th) ระบบภาพเคลื่อนที่ซึ่งประกอบด้วยการปรับมีอัตโนมัติและส่วนสร้างแนวเส้นขาว
TH11258EX (th) การควบคุมระดับความสว่างเพื่อให้เหมาะสมกับการควบคุมภาพ
EP0961503A3 (en) Means of connecting a video source to a colour television receiver/colour monitor