WO2005083663A3 - Display operating method and calibration method for e.g. a video wall - Google Patents

Display operating method and calibration method for e.g. a video wall Download PDF

Info

Publication number
WO2005083663A3
WO2005083663A3 PCT/GB2005/000689 GB2005000689W WO2005083663A3 WO 2005083663 A3 WO2005083663 A3 WO 2005083663A3 GB 2005000689 W GB2005000689 W GB 2005000689W WO 2005083663 A3 WO2005083663 A3 WO 2005083663A3
Authority
WO
WIPO (PCT)
Prior art keywords
display
light
modules
detection means
light source
Prior art date
Application number
PCT/GB2005/000689
Other languages
French (fr)
Other versions
WO2005083663A2 (en
Inventor
Timothy Martin Coker
Paul Alastair Silsby
Simon Paul Smith
Original Assignee
Inputpearl Ltd
Timothy Martin Coker
Paul Alastair Silsby
Simon Paul Smith
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 Inputpearl Ltd, Timothy Martin Coker, Paul Alastair Silsby, Simon Paul Smith filed Critical Inputpearl Ltd
Publication of WO2005083663A2 publication Critical patent/WO2005083663A2/en
Publication of WO2005083663A3 publication Critical patent/WO2005083663A3/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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G06F3/1446—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • 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
    • G09G2320/0693—Calibration of display systems
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • 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
    • G09G3/3406—Control of illumination source
    • 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
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix

Abstract

A display for displaying a moving image is disclosed. The display has a plurality of modules or sub-modules, each having at least one respective light source at least partially enclosed by a reflector. Each module or sub-module has an array of pixels for modulating and transmitting light from the respective light source to form an image. Each light source has an associated detection means for detecting the brightness of said at least one or more of said light sources, the detection means being arranged to sample light from a sampling location within the space enclosed by the reflector. Signals from the detection means are collated to provide a measurement of the uniformity of light from the respective light sources. A processor controls the light sources to adjust for temperature and aging variations of modules in the display. Also disclosed are methods for calibration and operation of the display.
PCT/GB2005/000689 2004-02-24 2005-02-24 Display operating method and calibration method for e.g. a video wall WO2005083663A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0404091.1 2004-02-24
GB0404091A GB0404091D0 (en) 2004-02-24 2004-02-24 Display

Publications (2)

Publication Number Publication Date
WO2005083663A2 WO2005083663A2 (en) 2005-09-09
WO2005083663A3 true WO2005083663A3 (en) 2005-10-20

Family

ID=32050782

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/000689 WO2005083663A2 (en) 2004-02-24 2005-02-24 Display operating method and calibration method for e.g. a video wall

Country Status (2)

Country Link
GB (1) GB0404091D0 (en)
WO (1) WO2005083663A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324147A2 (en) * 1988-01-11 1989-07-19 Seiko Epson Corporation Light guide type display apparatus
US5394167A (en) * 1992-02-27 1995-02-28 Securite Et Signalisation Display device
WO1999026220A2 (en) * 1997-11-15 1999-05-27 Christopher Mort Method for keeping uniform light characteristics in an array of projection screen modules
WO2003016989A2 (en) * 2001-08-13 2003-02-27 Inputpearl Limited Display

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324147A2 (en) * 1988-01-11 1989-07-19 Seiko Epson Corporation Light guide type display apparatus
US5394167A (en) * 1992-02-27 1995-02-28 Securite Et Signalisation Display device
WO1999026220A2 (en) * 1997-11-15 1999-05-27 Christopher Mort Method for keeping uniform light characteristics in an array of projection screen modules
WO2003016989A2 (en) * 2001-08-13 2003-02-27 Inputpearl Limited Display

Also Published As

Publication number Publication date
GB0404091D0 (en) 2004-03-31
WO2005083663A2 (en) 2005-09-09

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