WO1991015843A3 - Video display systems - Google Patents

Video display systems Download PDF

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Publication number
WO1991015843A3
WO1991015843A3 PCT/GB1991/000552 GB9100552W WO9115843A3 WO 1991015843 A3 WO1991015843 A3 WO 1991015843A3 GB 9100552 W GB9100552 W GB 9100552W WO 9115843 A3 WO9115843 A3 WO 9115843A3
Authority
WO
WIPO (PCT)
Prior art keywords
video display
faulty
display systems
brightness
pixel
Prior art date
Application number
PCT/GB1991/000552
Other languages
French (fr)
Other versions
WO1991015843A2 (en
Inventor
Raymond Gordon Fielding
Original Assignee
Rank Brimar Ltd
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 Rank Brimar Ltd filed Critical Rank Brimar Ltd
Priority to JP91506982A priority Critical patent/JPH05506108A/en
Publication of WO1991015843A2 publication Critical patent/WO1991015843A2/en
Publication of WO1991015843A3 publication Critical patent/WO1991015843A3/en

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
    • 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
    • G09G3/36—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 liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • 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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/002—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT
    • 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
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall 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
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/10—Dealing with defective pixels
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays

Abstract

A video display system of the kind which includes an active matrix having pixels which can be selectively energised is characterised in that there are means to visually compensate for a faulty pixel which either fails to light when selected or which continues to be lit when not selected, said means comprising an arrangement whereby the brightness of at least one of those pixels which are immediately adjacent the faulty pixel have their brightness automatically adjusted so that a perception of a viewer is that the faulty pixel is not in fact faulty.
PCT/GB1991/000552 1990-04-09 1991-04-09 Video display systems WO1991015843A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP91506982A JPH05506108A (en) 1990-04-09 1991-04-09 video display system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9008032.6 1990-04-09
GB909008032A GB9008032D0 (en) 1990-04-09 1990-04-09 Video display systems

Publications (2)

Publication Number Publication Date
WO1991015843A2 WO1991015843A2 (en) 1991-10-17
WO1991015843A3 true WO1991015843A3 (en) 1991-11-14

Family

ID=10674159

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/000552 WO1991015843A2 (en) 1990-04-09 1991-04-09 Video display systems

Country Status (5)

Country Link
EP (1) EP0524976A1 (en)
JP (1) JPH05506108A (en)
AU (1) AU7661191A (en)
GB (1) GB9008032D0 (en)
WO (1) WO1991015843A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8941580B2 (en) 2006-11-30 2015-01-27 Sharp Laboratories Of America, Inc. Liquid crystal display with area adaptive backlight
US9143657B2 (en) 2006-01-24 2015-09-22 Sharp Laboratories Of America, Inc. Color enhancement technique using skin color detection
US9478182B2 (en) 2009-02-24 2016-10-25 Dolby Laboratories Licensing Corporation Locally dimmed quantum dots (nano-crystal) based display

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9204798D0 (en) * 1992-03-05 1992-04-15 Rank Brimar Ltd Spatial light modulator system
US5289172A (en) * 1992-10-23 1994-02-22 Texas Instruments Incorporated Method of mitigating the effects of a defective electromechanical pixel
US5659374A (en) * 1992-10-23 1997-08-19 Texas Instruments Incorporated Method of repairing defective pixels
US5673106A (en) * 1994-06-17 1997-09-30 Texas Instruments Incorporated Printing system with self-monitoring and adjustment
US5504504A (en) * 1994-07-13 1996-04-02 Texas Instruments Incorporated Method of reducing the visual impact of defects present in a spatial light modulator display
KR0147939B1 (en) * 1994-11-11 1998-09-15 배순훈 Pixel correction apparatus of projector
CA2179440A1 (en) * 1995-06-29 1996-12-30 Stephen W. Marshall Spatial light modulator with improved peak white performance
US5748178A (en) * 1995-07-18 1998-05-05 Sybase, Inc. Digital video system and methods for efficient rendering of superimposed vector graphics
US5790297A (en) * 1997-06-26 1998-08-04 Xerox Corporation Optical row displacement for a fault tolerant projective display
US5774254A (en) * 1997-06-26 1998-06-30 Xerox Corporation Fault tolerant light modulator display system
US6738035B1 (en) * 1997-09-22 2004-05-18 Nongqiang Fan Active matrix LCD based on diode switches and methods of improving display uniformity of same
US6340965B1 (en) * 1999-03-18 2002-01-22 Xerox Corporation Modifiable display having fixed image patterns
US6359662B1 (en) * 1999-11-05 2002-03-19 Agilent Technologies, Inc. Method and system for compensating for defects in a multi-light valve display system
JP4754682B2 (en) * 1999-11-19 2011-08-24 株式会社半導体エネルギー研究所 Display device
JP4348409B2 (en) 2001-02-27 2009-10-21 ドルビー ラボラトリーズ ライセンシング コーポレイション High dynamic range display
ES2675880T3 (en) 2002-03-13 2018-07-13 Dolby Laboratories Licensing Corporation Failure compensation of light emitting element on a monitor
US8687271B2 (en) 2002-03-13 2014-04-01 Dolby Laboratories Licensing Corporation N-modulation displays and related methods
US6650353B2 (en) * 2002-04-05 2003-11-18 Agfa Corporation Method and system for focus control in imaging engine with spatial light modulator
US20050179675A1 (en) * 2002-05-27 2005-08-18 Koninklijke Phillips Electonics N.C. Pixel fault masking
US7079233B1 (en) 2003-08-27 2006-07-18 Bryan Comeau System and method for determining the alignment quality in an illumination system that includes an illumination modulator
US6882457B1 (en) 2003-08-27 2005-04-19 Agfa Corporation System and method for determining the modulation quality of an illumination modulator in an imaging system
EP1536399A1 (en) * 2003-11-26 2005-06-01 Barco N.V. Method and device for visual masking of defects in matrix displays by using characteristics of the human vision system
JP2005195832A (en) * 2004-01-07 2005-07-21 Sony Corp Image display apparatus and image display method
US7292024B2 (en) * 2005-04-28 2007-11-06 Avago Technologies Ecbu Ip (Singapore) Pte Ltd Defect mitigation in display panels
US8044944B2 (en) 2005-07-22 2011-10-25 Nvidia Corporation Defective pixel management for flat panel displays
KR101147083B1 (en) * 2006-03-29 2012-05-18 엘지디스플레이 주식회사 Picture Quality Controling Method
US7460133B2 (en) 2006-04-04 2008-12-02 Sharp Laboratories Of America, Inc. Optimal hiding for defective subpixels
EP2118880A4 (en) 2007-02-01 2010-08-25 Dolby Lab Licensing Corp Calibration of displays having spatially-variable backlight
GB0711462D0 (en) 2007-06-13 2007-07-25 Digital Projection Ltd Digital image display services
US20090322800A1 (en) 2008-06-25 2009-12-31 Dolby Laboratories Licensing Corporation Method and apparatus in various embodiments for hdr implementation in display devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003018A1 (en) * 1983-01-24 1984-08-02 Eastman Kodak Co Method and apparatus for processing signals from a solid-state image sensor
US4680579A (en) * 1983-09-08 1987-07-14 Texas Instruments Incorporated Optical system for projection display using spatial light modulator device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003018A1 (en) * 1983-01-24 1984-08-02 Eastman Kodak Co Method and apparatus for processing signals from a solid-state image sensor
US4680579A (en) * 1983-09-08 1987-07-14 Texas Instruments Incorporated Optical system for projection display using spatial light modulator device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9143657B2 (en) 2006-01-24 2015-09-22 Sharp Laboratories Of America, Inc. Color enhancement technique using skin color detection
US8941580B2 (en) 2006-11-30 2015-01-27 Sharp Laboratories Of America, Inc. Liquid crystal display with area adaptive backlight
US9478182B2 (en) 2009-02-24 2016-10-25 Dolby Laboratories Licensing Corporation Locally dimmed quantum dots (nano-crystal) based display

Also Published As

Publication number Publication date
WO1991015843A2 (en) 1991-10-17
JPH05506108A (en) 1993-09-02
AU7661191A (en) 1991-10-30
EP0524976A1 (en) 1993-02-03
GB9008032D0 (en) 1990-06-06

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