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 PDFInfo
- 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- Withdrawn
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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
- 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)
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)
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)
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 |
-
1988
- 1988-06-29 JP JP63159565A patent/JPH01116683A/ja active Pending
- 1988-10-19 EP EP88309803A patent/EP0313329A3/fr not_active Withdrawn
Patent Citations (6)
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)
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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Effective date: 19920702 |