WO1999026220A3 - Method for keeping uniform light characteristics in an array of projection screen modules - Google Patents

Method for keeping uniform light characteristics in an array of projection screen modules Download PDF

Info

Publication number
WO1999026220A3
WO1999026220A3 PCT/GB1998/003447 GB9803447W WO9926220A3 WO 1999026220 A3 WO1999026220 A3 WO 1999026220A3 GB 9803447 W GB9803447 W GB 9803447W WO 9926220 A3 WO9926220 A3 WO 9926220A3
Authority
WO
WIPO (PCT)
Prior art keywords
array
screen modules
characteristic
projection screen
uniform light
Prior art date
Application number
PCT/GB1998/003447
Other languages
French (fr)
Other versions
WO1999026220A2 (en
Inventor
Christopher Mort
Original Assignee
Christopher Mort
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 Christopher Mort filed Critical Christopher Mort
Publication of WO1999026220A2 publication Critical patent/WO1999026220A2/en
Publication of WO1999026220A3 publication Critical patent/WO1999026220A3/en

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/02—Composition of display devices
    • G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
    • 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

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

The quality of an image or images projected onto an array of adjacently arranged screens (such as a 'video wall' comprising an array of projector/screen modules) is controlled by (a) monitoring a characteristic of light projected to form the image or images for individual respective screens comprising the array; and (b) modifying the characteristic of projected light for one or more particular respective screens if modification of the characteristic is required for the particular respective screens in order to ensure that the characteristic is substantially uniform for projected light for screens across the array.
PCT/GB1998/003447 1997-11-15 1998-11-16 Method for keeping uniform light characteristics in an array of projection screen modules WO1999026220A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9724097.2 1997-11-15
GBGB9724097.2A GB9724097D0 (en) 1997-11-15 1997-11-15 Image control

Publications (2)

Publication Number Publication Date
WO1999026220A2 WO1999026220A2 (en) 1999-05-27
WO1999026220A3 true WO1999026220A3 (en) 1999-07-15

Family

ID=10822095

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/003447 WO1999026220A2 (en) 1997-11-15 1998-11-16 Method for keeping uniform light characteristics in an array of projection screen modules

Country Status (2)

Country Link
GB (1) GB9724097D0 (en)
WO (1) WO1999026220A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0404091D0 (en) * 2004-02-24 2004-03-31 Inputpearl Ltd Display
EG23651A (en) 2004-03-06 2007-03-21 Ct For Documentation Of Cultur Culturama

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005950A (en) * 1988-06-28 1991-04-09 Etat Francais Represente Par Le Ministere Des Postes Giant liquid crystal display means
EP0564311A1 (en) * 1992-02-27 1993-10-06 Securite Et Signalisation Display system
WO1995031876A1 (en) * 1994-05-12 1995-11-23 Samsung Electronics Co., Ltd. Large area tiled modular display system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005950A (en) * 1988-06-28 1991-04-09 Etat Francais Represente Par Le Ministere Des Postes Giant liquid crystal display means
EP0564311A1 (en) * 1992-02-27 1993-10-06 Securite Et Signalisation Display system
WO1995031876A1 (en) * 1994-05-12 1995-11-23 Samsung Electronics Co., Ltd. Large area tiled modular display system

Also Published As

Publication number Publication date
GB9724097D0 (en) 1998-01-14
WO1999026220A2 (en) 1999-05-27

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