DE69211328T2 - Verfahren zur verbesserten Farbwiedergewinnung in einem graphischen Rechnersystem - Google Patents

Verfahren zur verbesserten Farbwiedergewinnung in einem graphischen Rechnersystem

Info

Publication number
DE69211328T2
DE69211328T2 DE69211328T DE69211328T DE69211328T2 DE 69211328 T2 DE69211328 T2 DE 69211328T2 DE 69211328 T DE69211328 T DE 69211328T DE 69211328 T DE69211328 T DE 69211328T DE 69211328 T2 DE69211328 T2 DE 69211328T2
Authority
DE
Germany
Prior art keywords
computer system
improved color
color recovery
graphic computer
graphic
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
Application number
DE69211328T
Other languages
English (en)
Other versions
DE69211328D1 (de
Inventor
Anthony C Barkans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE69211328D1 publication Critical patent/DE69211328D1/de
Application granted granted Critical
Publication of DE69211328T2 publication Critical patent/DE69211328T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2044—Display of intermediate tones using dithering
    • G09G3/2051—Display of intermediate tones using dithering with use of a spatial dither pattern

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Controls And Circuits For Display Device (AREA)
DE69211328T 1992-03-27 1992-11-05 Verfahren zur verbesserten Farbwiedergewinnung in einem graphischen Rechnersystem Expired - Lifetime DE69211328T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/859,213 US5598184A (en) 1992-03-27 1992-03-27 Method and apparatus for improved color recovery in a computer graphics system

Publications (2)

Publication Number Publication Date
DE69211328D1 DE69211328D1 (de) 1996-07-11
DE69211328T2 true DE69211328T2 (de) 1997-01-16

Family

ID=25330354

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69211328T Expired - Lifetime DE69211328T2 (de) 1992-03-27 1992-11-05 Verfahren zur verbesserten Farbwiedergewinnung in einem graphischen Rechnersystem

Country Status (4)

Country Link
US (1) US5598184A (de)
EP (1) EP0562162B1 (de)
JP (1) JPH0660179A (de)
DE (1) DE69211328T2 (de)

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US5819035A (en) * 1995-10-20 1998-10-06 Matsushita Electric Industrial Co., Ltd. Post-filter for removing ringing artifacts of DCT coding
JPH10240202A (ja) * 1996-12-24 1998-09-11 Sanyo Electric Co Ltd Ｌｃｄ表示装置
US6034664A (en) * 1997-06-25 2000-03-07 Sun Microsystems, Inc. Method and apparatus for pseudo-random noise generation based on variation of intensity and coloration
JPH11196271A (ja) * 1997-10-30 1999-07-21 Minolta Co Ltd 画像データ変換方法およびその装置並びに画像データ変換プログラムを記録したコンピュータ読み取り可能な記録媒体
US6005683A (en) * 1997-12-05 1999-12-21 Hewlett-Packard Company Document edge detection by linear image sensor
TW376501B (en) 1998-01-26 1999-12-11 Au Optronics Corp Digital image driving circuit for LCD
US6185334B1 (en) * 1998-01-30 2001-02-06 Compaq Computer Corporation Method for reconstructing a dithered image
US6347160B1 (en) 1998-01-30 2002-02-12 Compaq Information Technologies Group, L.P. Increasing the bit depth of and filtering dithered images for the purpose of inverse dithering
AU1823400A (en) * 1998-11-17 2000-06-05 Quantum3D, Inc. Device and method for antialiasing high resolution pixel data for lower resolution display
US6175656B1 (en) * 1999-03-25 2001-01-16 Sony Corporation Non-linear video sharpening filter
JP3701522B2 (ja) * 1999-09-21 2005-09-28 シャープ株式会社 画像符号化装置、画像符号化方法及びコンピュータ読み取り可能な記録媒体
KR20020013836A (ko) 1999-11-22 2002-02-21 요트.게.아. 롤페즈 이미지 언디더링하는 장치 및 방법
US6894698B2 (en) * 2000-01-11 2005-05-17 Sun Microsystems, Inc. Recovering added precision from L-bit samples by dithering the samples prior to an averaging computation
KR100397904B1 (ko) * 2000-03-10 2003-09-13 마츠시타 덴끼 산교 가부시키가이샤 계조 보정 회로 및 γ보정 장치
US6873436B1 (en) * 2000-09-05 2005-03-29 Fuji Xerox Co., Ltd. Image processing device and recording medium
JP2002140030A (ja) * 2000-10-31 2002-05-17 Seiko Epson Corp カラー表示方法及びそれを用いる半導体集積回路
KR100433875B1 (ko) * 2002-01-31 2004-06-04 엘지전자 주식회사 디스플레이 장치의 샤프니스 보정장치
EP1439517A1 (de) * 2003-01-10 2004-07-21 Deutsche Thomson-Brandt Gmbh Verfahren und Vorrichtung zur Verarbeitung von auf einem Bildschirm dargestellten Videodaten
US7180525B1 (en) 2003-11-25 2007-02-20 Sun Microsystems, Inc. Spatial dithering to overcome limitations in RGB color precision of data interfaces when using OEM graphics cards to do high-quality antialiasing
US7471845B2 (en) * 2004-01-06 2008-12-30 Sharp Laboratories Of America, Inc. De-ringing filter
KR101097512B1 (ko) * 2004-11-23 2011-12-22 엘지디스플레이 주식회사 액정표시장치 및 구동방법
JP2006270421A (ja) * 2005-03-23 2006-10-05 Sharp Corp エッジ強調処理装置及び液晶表示装置
JP4419917B2 (ja) * 2005-06-16 2010-02-24 ソニー株式会社 表示装置、液晶表示装置、データ処理方法及びプログラム
JP4712642B2 (ja) * 2006-08-17 2011-06-29 富士通セミコンダクター株式会社 デブロッキングフィルタ、画像符号化装置および画像復号化装置
EP2105023A2 (de) * 2006-12-28 2009-09-30 Thomson Licensing Zeilenbildungsartefaktdetektion in digitalem videoinhalt
US9967481B2 (en) * 2013-03-13 2018-05-08 Intel Corporation Techniques for image sensor pixel correction
TWI514359B (zh) * 2013-08-28 2015-12-21 Novatek Microelectronics Corp 液晶顯示器及其影像遞色補償方法
US9865226B2 (en) 2014-09-05 2018-01-09 International Business Machines Corporation Image color correction for electronic displays
US20170076417A1 (en) * 2015-09-10 2017-03-16 Apple Inc. Display frame buffer compression

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US4730185A (en) * 1984-07-06 1988-03-08 Tektronix, Inc. Graphics display method and apparatus for color dithering
JPS6277637A (ja) * 1985-10-01 1987-04-09 Seiko Instr & Electronics Ltd カラ−ハ−ドコピ−装置
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US4843380A (en) * 1987-07-13 1989-06-27 Megatek Corporation Anti-aliasing raster scan display system
US4992781A (en) * 1987-07-17 1991-02-12 Sharp Kabushiki Kaisha Image synthesizer
US4991122A (en) * 1987-10-07 1991-02-05 General Parametrics Corporation Weighted mapping of color value information onto a display screen
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US4908780A (en) * 1988-10-14 1990-03-13 Sun Microsystems, Inc. Anti-aliasing raster operations utilizing sub-pixel crossing information to control pixel shading
US5164717A (en) * 1989-09-28 1992-11-17 Sun Microsystems, Inc. Method and apparatus for the dithering of antialiased vectors
US5126726A (en) * 1989-12-27 1992-06-30 General Electric Company Picture element encoding
US5218649A (en) * 1990-05-04 1993-06-08 U S West Advanced Technologies, Inc. Image enhancement system

Also Published As

Publication number Publication date
EP0562162B1 (de) 1996-06-05
JPH0660179A (ja) 1994-03-04
US5598184A (en) 1997-01-28
DE69211328D1 (de) 1996-07-11
EP0562162A1 (de) 1993-09-29

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Legal Events

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8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD CO. (N.D.GES.D.STAATES DELAWARE),

8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE

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