DE69231194T2 - Verfahren zur Verbesserung eines Videosignals - Google Patents

Verfahren zur Verbesserung eines Videosignals

Info

Publication number
DE69231194T2
DE69231194T2 DE69231194T DE69231194T DE69231194T2 DE 69231194 T2 DE69231194 T2 DE 69231194T2 DE 69231194 T DE69231194 T DE 69231194T DE 69231194 T DE69231194 T DE 69231194T DE 69231194 T2 DE69231194 T2 DE 69231194T2
Authority
DE
Germany
Prior art keywords
improving
video signal
video
signal
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 - Fee Related
Application number
DE69231194T
Other languages
English (en)
Other versions
DE69231194D1 (de
Inventor
Henry D Hendrix
Paul M Urbanus
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of DE69231194D1 publication Critical patent/DE69231194D1/de
Application granted granted Critical
Publication of DE69231194T2 publication Critical patent/DE69231194T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
    • 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
    • H04N5/202—Gamma control
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/28—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using colour tubes
    • G09G1/285—Interfacing with colour displays, e.g. TV receiver
    • 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
    • G09G3/34—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 by control of light from an independent source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/3433—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 by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/346—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 by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on modulation of the reflection angle, e.g. micromirrors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7458—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of deformable mirrors, e.g. digital micromirror device [DMD]
    • H04N2005/7466—Control circuits therefor
DE69231194T 1991-12-05 1992-12-03 Verfahren zur Verbesserung eines Videosignals Expired - Fee Related DE69231194T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80324691A 1991-12-05 1991-12-05

Publications (2)

Publication Number Publication Date
DE69231194D1 DE69231194D1 (de) 2000-07-27
DE69231194T2 true DE69231194T2 (de) 2001-02-15

Family

ID=25186005

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69231194T Expired - Fee Related DE69231194T2 (de) 1991-12-05 1992-12-03 Verfahren zur Verbesserung eines Videosignals

Country Status (4)

Country Link
US (1) US5303055A (de)
EP (2) EP0841810B1 (de)
KR (1) KR100248848B1 (de)
DE (1) DE69231194T2 (de)

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US5623281A (en) * 1994-09-30 1997-04-22 Texas Instruments Incorporated Error diffusion filter for DMD display
KR0147939B1 (ko) * 1994-11-11 1998-09-15 배순훈 투사형 화상표시장치의 화소보정장치
US5808800A (en) 1994-12-22 1998-09-15 Displaytech, Inc. Optics arrangements including light source arrangements for an active matrix liquid crystal image generator
US5757348A (en) * 1994-12-22 1998-05-26 Displaytech, Inc. Active matrix liquid crystal image generator with hybrid writing scheme
US5748164A (en) * 1994-12-22 1998-05-05 Displaytech, Inc. Active matrix liquid crystal image generator
US5841579A (en) 1995-06-07 1998-11-24 Silicon Light Machines Flat diffraction grating light valve
US5982553A (en) 1997-03-20 1999-11-09 Silicon Light Machines Display device incorporating one-dimensional grating light-valve array
US6088102A (en) 1997-10-31 2000-07-11 Silicon Light Machines Display apparatus including grating light-valve array and interferometric optical system
US6271808B1 (en) 1998-06-05 2001-08-07 Silicon Light Machines Stereo head mounted display using a single display device
US6101036A (en) 1998-06-23 2000-08-08 Silicon Light Machines Embossed diffraction grating alone and in combination with changeable image display
US6130770A (en) 1998-06-23 2000-10-10 Silicon Light Machines Electron gun activated grating light valve
US6215579B1 (en) 1998-06-24 2001-04-10 Silicon Light Machines Method and apparatus for modulating an incident light beam for forming a two-dimensional image
US6303986B1 (en) 1998-07-29 2001-10-16 Silicon Light Machines Method of and apparatus for sealing an hermetic lid to a semiconductor die
WO2000021303A1 (en) * 1998-10-06 2000-04-13 Matsushita Electric Industrial Co., Ltd. η CORRECTION CIRCUIT AND η CORRECTION METHOD
FR2793794B1 (fr) * 1999-05-21 2001-07-27 Hoechst Marion Roussel Inc Nouveaux derives de la purine, leur procede de preparation, leur application a titre de medicaments, compositions pharmaceutiques et nouvelle utilisation
US6507347B1 (en) * 2000-03-24 2003-01-14 Lighthouse Technologies Ltd. Selected data compression for digital pictorial information
US6597411B1 (en) 2000-11-09 2003-07-22 Genesis Microchip Inc. Method and apparatus for avoiding moire in digitally resized images
US6782205B2 (en) 2001-06-25 2004-08-24 Silicon Light Machines Method and apparatus for dynamic equalization in wavelength division multiplexing
US6747781B2 (en) 2001-06-25 2004-06-08 Silicon Light Machines, Inc. Method, apparatus, and diffuser for reducing laser speckle
US6829092B2 (en) 2001-08-15 2004-12-07 Silicon Light Machines, Inc. Blazed grating light valve
US6800238B1 (en) 2002-01-15 2004-10-05 Silicon Light Machines, Inc. Method for domain patterning in low coercive field ferroelectrics
KR100447188B1 (ko) * 2002-03-22 2004-09-04 엘지전자 주식회사 디스플레이 장치의 감마 보정 장치
US6767751B2 (en) 2002-05-28 2004-07-27 Silicon Light Machines, Inc. Integrated driver process flow
US6822797B1 (en) 2002-05-31 2004-11-23 Silicon Light Machines, Inc. Light modulator structure for producing high-contrast operation using zero-order light
US6829258B1 (en) 2002-06-26 2004-12-07 Silicon Light Machines, Inc. Rapidly tunable external cavity laser
US6714337B1 (en) 2002-06-28 2004-03-30 Silicon Light Machines Method and device for modulating a light beam and having an improved gamma response
US6813059B2 (en) 2002-06-28 2004-11-02 Silicon Light Machines, Inc. Reduced formation of asperities in contact micro-structures
US6801354B1 (en) 2002-08-20 2004-10-05 Silicon Light Machines, Inc. 2-D diffraction grating for substantially eliminating polarization dependent losses
US6712480B1 (en) 2002-09-27 2004-03-30 Silicon Light Machines Controlled curvature of stressed micro-structures
US6829077B1 (en) 2003-02-28 2004-12-07 Silicon Light Machines, Inc. Diffractive light modulator with dynamically rotatable diffraction plane
US6806997B1 (en) 2003-02-28 2004-10-19 Silicon Light Machines, Inc. Patterned diffractive light modulator ribbon for PDL reduction
US20080007576A1 (en) * 2003-11-01 2008-01-10 Fusao Ishii Image display device with gray scales controlled by oscillating and positioning states
US20100079685A1 (en) * 2003-11-01 2010-04-01 Taro Endo Spatial light modulator performing a gamma correction
US7826126B2 (en) * 2003-11-01 2010-11-02 Silicon Quest Kabushiki-Kaisha Gamma correction for adjustable light source
US7787172B2 (en) * 2003-11-01 2010-08-31 Silicon Quest Kabushiki-Kaisha Gamma correction for adjustable light source
US7948505B2 (en) * 2003-11-01 2011-05-24 Silicon Quest Kabushiki-Kaisha Method for reducing temporal artifacts in digital video systems
US7372507B2 (en) * 2005-02-08 2008-05-13 Texas Instruments Incorporated Real-time content based gamma adjustment for digital video display
US20070064007A1 (en) * 2005-09-14 2007-03-22 Childers Winthrop D Image display system and method
US20070063996A1 (en) * 2005-09-14 2007-03-22 Childers Winthrop D Image display system and method
US20070064008A1 (en) * 2005-09-14 2007-03-22 Childers Winthrop D Image display system and method
US7551154B2 (en) * 2005-09-15 2009-06-23 Hewlett-Packard Development Company, L.P. Image display system and method
CN111190838A (zh) * 2019-12-27 2020-05-22 上海瑞立柯信息技术有限公司 一种空间光调制器Gamma参数设置方法

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Also Published As

Publication number Publication date
EP0545412A3 (en) 1993-11-03
EP0841810A1 (de) 1998-05-13
DE69231194D1 (de) 2000-07-27
KR930015887A (ko) 1993-07-24
KR100248848B1 (ko) 2000-03-15
EP0545412A2 (de) 1993-06-09
US5303055A (en) 1994-04-12
EP0841810B1 (de) 2000-06-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee