EP0313329A2 - Dispositif de visualisation à adressage matricieller avec distribution de luminance gaussianne, genéré automatiquement - Google Patents

Dispositif de visualisation à adressage matricieller avec distribution de luminance gaussianne, genéré automatiquement Download PDF

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Publication number
EP0313329A2
EP0313329A2 EP88309803A EP88309803A EP0313329A2 EP 0313329 A2 EP0313329 A2 EP 0313329A2 EP 88309803 A EP88309803 A EP 88309803A EP 88309803 A EP88309803 A EP 88309803A EP 0313329 A2 EP0313329 A2 EP 0313329A2
Authority
EP
European Patent Office
Prior art keywords
dot
pixels
luminescence
desired pixel
technique
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.)
Withdrawn
Application number
EP88309803A
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German (de)
English (en)
Other versions
EP0313329A3 (fr
Inventor
Lyle R. Strathman
Craig E. Harwood
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.)
Boeing North American Inc
Original Assignee
Rockwell International Corp
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 Rockwell International Corp filed Critical Rockwell International Corp
Publication of EP0313329A2 publication Critical patent/EP0313329A2/fr
Publication of EP0313329A3 publication Critical patent/EP0313329A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • G09G5/20—Function-generator circuits, e.g. circle generators line or curve smoothing circuits
    • 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

Definitions

  • This invention generally relates to matrix displays and more particularly concerns a technique to enhance the image quality of matrix displays.
  • monochrome matrix displays consist of a regular patterned array of separately addressable single color display elements
  • color matrix displays typically consist of a regular patterned array of separately addressable elements with each element corresponding to one of the three preferred colors; red, green, and blue.
  • matrix addressed displays exhibit very sharp pixel quantization boundaries which produce visually noticeable picture chatter or jumping when displaying dynamic images; non dynamic images typically exhibit noticeable and sometimes annoying stair stepping or jagged effects.
  • the dynamic chatter and stair stepping problems typically associated with the matrix displays can be acute on color matrix displays, where like colored dots are separated by several dot spaces of unlike colored dots.
  • Tri-colored displays can sometimes be rendered unacceptable, with regard to visual performance, unless very high resolution i.e. very high dot densities are incorporated into the display.
  • very high resolution i.e. very high dot densities are incorporated into the display.
  • the dot area or dot size decreases thereby increasing the likelihood of the display of very narrow lines which can be often annoying to the human eye.
  • the cost of the display increases with increases in display resolution.
  • the present invention provides an automatic synthetic dot flair technique which is designed to satisfy the aforementioned needs, provide the previously propounded objects, include the above described features and produce the earlier articulated advantages.
  • the invention comprises a technique where the gaussian distribution, which is associated with a CRT beam, is emulated to some degree in addressing the individual pixels of a color matrix display. Although any distribution can be achieved with this technique.
  • the present invention relates to a technique for selectively energizing with varying intensities, a group of pixels positioned about a desired image dot position.
  • a technique for displaying dots on a matrix display comprises the steps of:
  • a technique for displaying a dot at a predetermined matrix address location comprises the steps of activating a predetermined plurality of pixels surrounding the predetermined location with luminescence which decreases with distance radially from the predetermined location.
  • Fig 1a there is a shown a schematic representation of a prior art technique used upon a monochrome matrix display wherein the image dot to be displayed is achieved by activating a single pixel which is co-­ located with the desired image dot position
  • Fig 2a is a schematic representation of a color matrix display which utilizes a prior art technique where the desired image dot is displayed by activating the dot most closely positioned to the desired image dot.
  • a desired pixel, to be displayed is transformed to have a new intensity or luminescence figure and the intensity or luminescent figures of the nearby pixels are transformed in a fashion which emulates a gaussian luminescence or intensity distribution or any other distribution where the intensity decreases radially from the desired pixel position
  • Fig 1b is a schematic representation of a monochrome matrix display which utilizes the inventive technique where a desired image dot is displayed by activating a central pixel and a plurality of concentric pixels located there about with decreasing levels of intensities so as to relatively emulate a gaussian or other radially decreasing distribution about the desired image dot position.
  • Fig 2b there is shown a schematic representation of a color matrix display which utilizes the technique of the present invention whereby the desired image dot, which is not co-located over an appropriate pixel, is caused to be displayed upon the color matrix display by activating a group of pixels surrounding the desired image spot and illuminating them at variable intensities in order to produce a virtual image dot at the desired image dot position.
  • Fig 4 there is shown a flow diagram of the steps of the present invention.
  • the present invention operates upon the luminescent information, which is typically generated for most displays, and then develops new transformed luminescent information for each pixel to be addressed.
  • the second step basically, is to systematically select a pixel to be operated on.
  • the next step is to scan the refresh memory of luminescent information for the selected pixel and the surrounding pixels. The number and configuration of the surrounding pixels which are scanned can be varied depending upon the precise requirements for any particular implementation.
  • the step of establishing a systematic plurality of pixels surrounding the desired pixel comprises determining the pixels in a 3 x 3 square configuration with the desired pixel located in a central position.
  • the next step is to generate new luminescent information for the selected pixel in view of the surrounding pixels and further in view of the desired dot flair.
  • the dot flair may be fashioned after and emulating a gaussian distribution around the central pixel, but other configurations or distributions may be substituted depending upon the precise design requirements of a particular implementation. After the selected pixel has had its luminescent information transformed it then can be displayed.
  • Figure 3 there is shown a logic flow diagram of the luminescence data corresponding to rows Y-M to Y+M and their conversion of the output luminescence L′ xy .
  • Figure 3 represents the luminescent data which would be scanned in order to operate upon the luminescence data for position xy as is shown.
  • the data for rows Y-M and Y+M would be scanned along with the row for Y while the columns X-N through X+N would be sampled for each of the rows.
  • the function generator generates new luminescent information for the selected pixel in view of the other luminescent information for the surrounding pixels and further in view of the desired dot flair distribution.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)
EP88309803A 1987-10-23 1988-10-19 Dispositif de visualisation à adressage matricieller avec distribution de luminance gaussianne, genéré automatiquement Withdrawn EP0313329A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11304687A 1987-10-23 1987-10-23
US113046 1987-10-23

Publications (2)

Publication Number Publication Date
EP0313329A2 true EP0313329A2 (fr) 1989-04-26
EP0313329A3 EP0313329A3 (fr) 1989-12-27

Family

ID=22347325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88309803A Withdrawn EP0313329A3 (fr) 1987-10-23 1988-10-19 Dispositif de visualisation à adressage matricieller avec distribution de luminance gaussianne, genéré automatiquement

Country Status (2)

Country Link
EP (1) EP0313329A3 (fr)
JP (1) JPH01116683A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751688A2 (fr) * 1995-06-29 1997-01-02 Texas Instruments Incorporated Modulateur spatial de lumière avec amélioration du niveau maximum du blanc
WO2000021068A1 (fr) 1998-10-07 2000-04-13 Microsoft Corporation Procedes et appareils d'affichage d'images de type texte
EP1026659A2 (fr) * 1999-02-01 2000-08-09 Sharp Kabushiki Kaisha Dispositif d'affichage de caractères, méthode de commande d'affichage et support d'enregistrement
EP1125271A1 (fr) * 1998-10-07 2001-08-22 Microsoft Corporation Projection d'echantillons de donnees d'images couleur d'avant-plan/arriere-plan sur des sous-composants de pixels
EP1155396A1 (fr) * 1998-10-07 2001-11-21 Microsoft Corporation Mappage d'echantillons de donnees d'image avec des sous-composants de pixels sur un dispositif d'affichage a lignes
US7006096B2 (en) 2001-01-15 2006-02-28 Sharp Kabushiki Kaisha Character display apparatus, character display method, and recording medium
EP3477130A1 (fr) 2017-10-31 2019-05-01 Crompton Technology Group Limited Structure tubulaire composite

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783334A (en) * 1969-07-23 1974-01-01 Nat Res Dev Cathode ray tube display systems
GB2021905A (en) * 1978-05-12 1979-12-05 Smiths Industries Ltd Display systems and control systems therefor
GB2044051A (en) * 1979-03-09 1980-10-08 Miller Rickard Ltd Resistive Interpolation of Extra Elements and Lines Between Stored Data
EP0145181A2 (fr) * 1983-11-18 1985-06-19 Honeywell Inc. Générateur d'halo pour l'affichage de symboles sur un T.R.C.
EP0238962A2 (fr) * 1986-03-27 1987-09-30 General Electric Company Correction d'image numérique
EP0242106A2 (fr) * 1986-04-14 1987-10-21 Advanced Micro Devices, Inc. Méthode et appareil de génération de vecteurs, d'arcs et cercles lisses dans un dispositif d'affichage vidéo

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783334A (en) * 1969-07-23 1974-01-01 Nat Res Dev Cathode ray tube display systems
GB2021905A (en) * 1978-05-12 1979-12-05 Smiths Industries Ltd Display systems and control systems therefor
GB2044051A (en) * 1979-03-09 1980-10-08 Miller Rickard Ltd Resistive Interpolation of Extra Elements and Lines Between Stored Data
EP0145181A2 (fr) * 1983-11-18 1985-06-19 Honeywell Inc. Générateur d'halo pour l'affichage de symboles sur un T.R.C.
EP0238962A2 (fr) * 1986-03-27 1987-09-30 General Electric Company Correction d'image numérique
EP0242106A2 (fr) * 1986-04-14 1987-10-21 Advanced Micro Devices, Inc. Méthode et appareil de génération de vecteurs, d'arcs et cercles lisses dans un dispositif d'affichage vidéo

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751688A2 (fr) * 1995-06-29 1997-01-02 Texas Instruments Incorporated Modulateur spatial de lumière avec amélioration du niveau maximum du blanc
EP0751688A3 (fr) * 1995-06-29 1999-07-21 Texas Instruments Incorporated Modulateur spatial de lumière avec amélioration du niveau maximum du blanc
EP1125270A4 (fr) * 1998-10-07 2008-03-19 Microsoft Corp Procedes et appareils d'affichage d'images de type texte
EP1155396A4 (fr) * 1998-10-07 2002-02-13 Microsoft Corp Mappage d'echantillons de donnees d'image avec des sous-composants de pixels sur un dispositif d'affichage a lignes
EP1125271A1 (fr) * 1998-10-07 2001-08-22 Microsoft Corporation Projection d'echantillons de donnees d'images couleur d'avant-plan/arriere-plan sur des sous-composants de pixels
EP1125270A1 (fr) * 1998-10-07 2001-08-22 Microsoft Corporation Procedes et appareils d'affichage d'images de type texte
EP1155396A1 (fr) * 1998-10-07 2001-11-21 Microsoft Corporation Mappage d'echantillons de donnees d'image avec des sous-composants de pixels sur un dispositif d'affichage a lignes
EP1163657A1 (fr) * 1998-10-07 2001-12-19 Microsoft Corporation Projection ponderee d'echantillons de donnees d'images sur des sous-composants de pixels dans un dispositif d'affichage
EP2439730A1 (fr) * 1998-10-07 2012-04-11 Microsoft Corporation Mise en correspondance indépendante de parties de données d'images en couleur pour sous-composants de pixels
EP1125271A4 (fr) * 1998-10-07 2009-06-03 Microsoft Corp Projection d'echantillons de donnees d'images couleur d'avant-plan/arriere-plan sur des sous-composants de pixels
EP1163657A4 (fr) * 1998-10-07 2002-02-13 Microsoft Corp Projection ponderee d'echantillons de donnees d'images sur des sous-composants de pixels dans un dispositif d'affichage
WO2000021068A1 (fr) 1998-10-07 2000-04-13 Microsoft Corporation Procedes et appareils d'affichage d'images de type texte
EP1026659A2 (fr) * 1999-02-01 2000-08-09 Sharp Kabushiki Kaisha Dispositif d'affichage de caractères, méthode de commande d'affichage et support d'enregistrement
EP1026659A3 (fr) * 1999-02-01 2002-01-30 Sharp Kabushiki Kaisha Dispositif d'affichage de caractères, méthode de commande d'affichage et support d'enregistrement
US7006096B2 (en) 2001-01-15 2006-02-28 Sharp Kabushiki Kaisha Character display apparatus, character display method, and recording medium
EP3477130A1 (fr) 2017-10-31 2019-05-01 Crompton Technology Group Limited Structure tubulaire composite
US11525529B2 (en) 2017-10-31 2022-12-13 Crompton Technology Group Limited Composite tubular structure

Also Published As

Publication number Publication date
JPH01116683A (ja) 1989-05-09
EP0313329A3 (fr) 1989-12-27

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