KR20050040849A - 동적 콘트라스트 개선 방법 - Google Patents

동적 콘트라스트 개선 방법 Download PDF

Info

Publication number
KR20050040849A
KR20050040849A KR1020047006568A KR20047006568A KR20050040849A KR 20050040849 A KR20050040849 A KR 20050040849A KR 1020047006568 A KR1020047006568 A KR 1020047006568A KR 20047006568 A KR20047006568 A KR 20047006568A KR 20050040849 A KR20050040849 A KR 20050040849A
Authority
KR
South Korea
Prior art keywords
dci
video frame
transfer function
analysis
dynamic contrast
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.)
Ceased
Application number
KR1020047006568A
Other languages
English (en)
Korean (ko)
Inventor
폴 덴 필리맨
토마스 에드워드 호르반더
Original Assignee
톰슨 라이센싱 에스.에이.
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 톰슨 라이센싱 에스.에이. filed Critical 톰슨 라이센싱 에스.에이.
Publication of KR20050040849A publication Critical patent/KR20050040849A/ko
Ceased legal-status Critical Current

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
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/066—Adjustment of display parameters for control of contrast

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
KR1020047006568A 2001-11-01 2002-10-28 동적 콘트라스트 개선 방법 Ceased KR20050040849A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33763401P 2001-11-01 2001-11-01
US60/337,634 2001-11-01

Publications (1)

Publication Number Publication Date
KR20050040849A true KR20050040849A (ko) 2005-05-03

Family

ID=23321343

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020047006568A Ceased KR20050040849A (ko) 2001-11-01 2002-10-28 동적 콘트라스트 개선 방법

Country Status (7)

Country Link
US (1) US7064794B2 (https=)
EP (1) EP1446944A4 (https=)
JP (1) JP4420385B2 (https=)
KR (1) KR20050040849A (https=)
CN (1) CN100382568C (https=)
MX (1) MXPA04004197A (https=)
WO (1) WO2003039137A1 (https=)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040255338A1 (en) * 2003-06-13 2004-12-16 Apple Computer, Inc. Interface for sending synchronized audio and video data
US7668099B2 (en) * 2003-06-13 2010-02-23 Apple Inc. Synthesis of vertical blanking signal
TWI234398B (en) * 2003-11-20 2005-06-11 Sunplus Technology Co Ltd Automatic contrast limiting circuit by spatial domain infinite impulse response filter and method thereof
US8922594B2 (en) 2005-06-15 2014-12-30 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics with high frequency contrast enhancement
US9083969B2 (en) 2005-08-12 2015-07-14 Sharp Laboratories Of America, Inc. Methods and systems for independent view adjustment in multiple-view displays
US8947465B2 (en) 2004-12-02 2015-02-03 Sharp Laboratories Of America, Inc. Methods and systems for display-mode-dependent brightness preservation
US7515160B2 (en) 2006-07-28 2009-04-07 Sharp Laboratories Of America, Inc. Systems and methods for color preservation with image tone scale corrections
US8913089B2 (en) 2005-06-15 2014-12-16 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics with frequency-specific gain
US7605872B2 (en) * 2005-06-20 2009-10-20 Mediatek Inc. Video contrast adjusting method and system
CN100407765C (zh) * 2005-09-07 2008-07-30 逐点半导体（上海）有限公司 图像对比度增强装置及增强方法
SG138579A1 (en) * 2006-06-26 2008-01-28 Genesis Microchip Inc Universal, highly configurable video and graphic measurement device
US7881547B2 (en) 2006-07-28 2011-02-01 Genesis Microchip Inc. Video window detector
US9330630B2 (en) 2008-08-30 2016-05-03 Sharp Laboratories Of America, Inc. Methods and systems for display source light management with rate change control
US8284232B2 (en) * 2009-01-30 2012-10-09 Hewlett-Packard Development Company, L.P. Equalization of video streams
KR101120700B1 (ko) * 2010-09-02 2012-03-29 삼성메디슨 주식회사 컬러 도플러 모드 영상을 제공하는 초음파 시스템 및 방법
US9338389B2 (en) 2011-10-20 2016-05-10 Dolby Laboratories Licensing Corporation Method and system for video equalization

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575885B1 (fr) 1985-01-04 1987-02-20 Thomson Csf Renforcateur de contraste pour images video
US4628362A (en) * 1985-05-02 1986-12-09 American Dynamics Corporation Combined video AGC and digitizing circuit
JP2521183Y2 (ja) 1987-09-29 1996-12-25 ソニー株式会社 ディジタル信号処理回路
US4829381A (en) * 1988-04-18 1989-05-09 Polaroid Corporation System and method for electronic image enhancement by dynamic pixel transformation
US5099330A (en) 1988-10-28 1992-03-24 Casio Computer Co., Ltd. Contrast control based on mean and deviation values
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
SG63564A1 (en) 1992-05-22 1999-03-30 Thomson Consumer Electronics Non-linear video signal processor employing picture element analysis
EP0613294B1 (en) 1993-02-24 1998-10-28 Matsushita Electric Industrial Co., Ltd. Gradation correction device and image sensing device therewith
US5550556A (en) 1993-11-01 1996-08-27 Multivideo Labs, Inc. Transmitting data and commands to display monitors
US5777590A (en) 1995-08-25 1998-07-07 S3, Incorporated Grayscale shading for liquid crystal display panels
JP3130266B2 (ja) 1996-03-09 2001-01-31 三星電子株式会社 平均分離ヒストグラム等化を用いる映像改善方法及びその回路
JP2951910B2 (ja) 1997-03-18 1999-09-20 松下電器産業株式会社 撮像装置の階調補正装置及び階調補正方法
US6075574A (en) * 1998-05-22 2000-06-13 Ati Technologies, Inc Method and apparatus for controlling contrast of images
EP0963112B1 (en) 1998-06-02 2004-04-21 Deutsche Thomson-Brandt Gmbh Method and apparatus for dynamic contrast improvement in video pictures
EP0963111A1 (en) * 1998-06-02 1999-12-08 Deutsche Thomson-Brandt Gmbh Method and apparatus for dynamic contrast improvement in video pictures

Also Published As

Publication number Publication date
EP1446944A4 (en) 2005-01-12
CN100382568C (zh) 2008-04-16
CN1575586A (zh) 2005-02-02
US7064794B2 (en) 2006-06-20
EP1446944A1 (en) 2004-08-18
JP4420385B2 (ja) 2010-02-24
MXPA04004197A (es) 2004-09-06
WO2003039137A1 (en) 2003-05-08
JP2005509340A (ja) 2005-04-07
US20040207760A1 (en) 2004-10-21

Similar Documents

Publication Publication Date Title
KR20050040849A (ko) 동적 콘트라스트 개선 방법
US5696852A (en) Image signal processing apparatus
US7889272B2 (en) Imaging apparatus, high frequency component detection circuit, high frequency component detection method and computer program product
EP1289280B1 (en) Device and method for improving picture quality
EP0178844A1 (en) Television receivers
CN100397870C (zh) 图像显示装置
EP0633690A2 (en) Dark level restoring circuit for television receiver
US6034742A (en) Adaptive sharpness enhancement for a multi-frequency scanning monitor
US20020051089A1 (en) Image display apparatus
JPH0690382A (ja) 階調補正装置
JP2969408B2 (ja) 映像表示装置
US6943848B2 (en) Unit for and method of video signal enhancement and image display apparatus provided with such a video signal enhancement unit
EP1258859A1 (en) Method for a segmented inverse gamma correction for a plasma display panel
JP2005039593A (ja) 画像処理装置、画像処理方法および画像投射装置
JPH08320679A (ja) 表示装置
JP3318755B2 (ja) 映像信号処理装置
JP2006217385A (ja) テレビ画像処理装置
JPH02213283A (ja) 輪郭強調量調整回路およびテレビジョン受像機
KR910008020B1 (ko) 디지탈 영상 신호처리용 코어링회로
JPH11355608A (ja) モニタ装置及びビデオ信号送出装置
KR100722049B1 (ko) 인터레이스 주사 방식 구현 ｔｖ 및 구현 방법
JPH0575982A (ja) 映像信号処理装置
JPH0690381A (ja) 階調補正装置
JPH05260502A (ja) 映像信号処理回路
KR19990004126A (ko) 자동 킨 바이어스 기준신호의 잔상을 제거한 텔레비젼 시스템 및 그의 잔상 제거방법

Legal Events

Date Code Title Description
PA0105 International application

Patent event date: 20040430

Patent event code: PA01051R01D

Comment text: International Patent Application

PG1501 Laying open of application
A201 Request for examination
PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 20071024

Comment text: Request for Examination of Application

E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

Comment text: Notification of reason for refusal

Patent event date: 20090810

Patent event code: PE09021S01D

E601 Decision to refuse application
PE0601 Decision on rejection of patent

Patent event date: 20100119

Comment text: Decision to Refuse Application

Patent event code: PE06012S01D

Patent event date: 20090810

Comment text: Notification of reason for refusal

Patent event code: PE06011S01I