EP1100068A2 - Dispositif pour améliorer l'affichage sur un dispositif de visualisation - Google Patents

Dispositif pour améliorer l'affichage sur un dispositif de visualisation Download PDF

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Publication number
EP1100068A2
EP1100068A2 EP00123963A EP00123963A EP1100068A2 EP 1100068 A2 EP1100068 A2 EP 1100068A2 EP 00123963 A EP00123963 A EP 00123963A EP 00123963 A EP00123963 A EP 00123963A EP 1100068 A2 EP1100068 A2 EP 1100068A2
Authority
EP
European Patent Office
Prior art keywords
signal
image
display
picture
der
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.)
Granted
Application number
EP00123963A
Other languages
German (de)
English (en)
Other versions
EP1100068A3 (fr
EP1100068B1 (fr
Inventor
Udo Grundig AG Fischbeck
Markus Grundig AG Friebe
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.)
Grundig Multimedia BV
Original Assignee
Grundig AG
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 Grundig AG filed Critical Grundig AG
Publication of EP1100068A2 publication Critical patent/EP1100068A2/fr
Publication of EP1100068A3 publication Critical patent/EP1100068A3/fr
Application granted granted Critical
Publication of EP1100068B1 publication Critical patent/EP1100068B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • 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

Definitions

  • the invention relates to a device for improving the image display a display.
  • a display with a further, higher resolution can in the simplest case increases the number of pixels in both the horizontal and vertical directions, for example, doubled.
  • an interpolation of the image signal can take place for this purpose.
  • a disadvantage of such an interpolation is that when hard Transitions or when there are steep signal edges in the image signal of the low resolution generated by the interpolation process intermediate stages be blurred in the reproduced image in the form of blurred Edges are visible.
  • DE-A-197 14 906 describes a method for improving the image resolution Color rendering devices known.
  • People exists with these devices conventional elementary color point from several to one unit formatted color pixels. From the color pixels of the conventional elementary Color dots are temporarily formed new additional color dots whose Color centers lie outside the color centers of the conventional color dots.
  • the images are made up of conventional color dots and these Images derived from images from additional color dots in quick succession excited one after the other.
  • the object of the invention Reason to show a device that the image representation on a Improved display of higher resolution, if there is more input Low resolution image signals.
  • the advantages of the invention are, in particular, that depending one of the current image content and the history of the image A decision is made as to whether a transition occurs Interpolation process carried out and thus in the image with higher resolution smooth transition is created or whether in the image with higher resolution a hard transition occurs.
  • This procedure also allows in the picture higher resolution to take account of the image content and natural Make transitions smooth and hard transitions, for example in the picture side lines of a tennis court running diagonally from top to bottom, hard to represent, i.e. do not perform interpolation.
  • Including the history of the image can affect the quality of the image display can be significantly improved on the display.
  • FIG. 1 shows a block diagram of a device according to the invention.
  • This image signal is fed to an interpolator 2 arranged in a first signal path and to a delay circuit 3 arranged in a second signal path arranged parallel to the first.
  • An image signal with a second resolution, which is higher than the first resolution, is available at the output of the interpolator 2 and at the output of the delay circuit 3.
  • the output signal of the interpolator 2 is fed to a terminal a of a switch 6.
  • the output signal of the delay circuit 3 is forwarded to the terminal b of the switch 6.
  • the switch 6 is either in the switch control signal S1 Switch position a or in switch position b and is therefore either for the output signal of the interpolator 2 or for the output signal of the Delay circuit 3 permeable.
  • the output signal of the switch 6, which is an image signal with the second, higher resolution, is fed to a display 7 and there shown.
  • This display is, for example, an LCD display.
  • a computing unit 4 is used to generate the switch control signal S1 provided that furthermore a control signal S2 for the delay circuit 3 and provides a control signal S3 for the interpolator 2.
  • the computing unit also stands with a memory 5 in connection.
  • the image signal is analyzed in the computing unit 4 using the first one Release. As part of this analysis, in particular in the image signal existing transitions or flanks recognized.
  • the computing unit takes care of it continue to store information about in the image signal Transitions occurring in the memory 5. In particular, data which saved the coordinates of the transition in the respective image and also the direction of the transition (light - dark or dark - light) and continues mark the course of an edge in the image.
  • the computing unit 4 uses the current ones and those already stored Information about the transitions present in the image signal to determine the Control signals S1. S2 and S3.
  • the information already saved about Transitions present in the image signal can be transitions that are in already transmitted image sections of the current field or full frame, or transitions that were detected in previous fields or frames, or both of the aforementioned transition types.
  • Figure 2 shows a diagram illustrating a soft Transition.
  • the signal curve E corresponds to that at input 1 applied image signal, the signal curve D at the output of the switch 6 provided image signal, which is shown on the display 7.
  • the Input signal E has a smooth transition, which is characterized by a low jump is symbolized.
  • the signal D derived therefrom, which on the display 7 is shown in this case by the interpolator determined. This has the consequence that due to the interpolation process in Signal D, which has a higher resolution than signal E, there is an intermediate stage on the basis of which this is shown on the display 7 represented signal a soft. natural transition.
  • Figure 3 shows a diagram illustrating a hard Transition.
  • the signal curve E corresponds to that at input 1 applied image signal, the signal curve D at the output of the switch 6 provided image signal, which is shown on the display 7.
  • the Input signal E has a hard transition, which is caused by a high jump is symbolized.
  • the signal D derived therefrom, which on the display 7 is shown, in this case by means of Delay circuit 3 generated.
  • the im Input signal existing transition not through an interpolation process is polished, but remains, and as a hard jump also in the signal D, which is shown on the display, occurs.
  • the signal D is only delayed compared to the signal E, this delay being chosen so that, on the one hand, the processing time in the computing unit 4, on the other hand is also adapted to the processing time in the interpolator 2 and History of the image content the correct temporally / geometrically correct position is determined.

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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)
  • Processing Or Creating Images (AREA)
  • Picture Signal Circuits (AREA)
  • Studio Devices (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
EP00123963A 1999-11-11 2000-11-03 Dispositif pour améliorer l'affichage sur un dispositif de visualisation Expired - Lifetime EP1100068B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19954029 1999-11-11
DE19954029A DE19954029C1 (de) 1999-11-11 1999-11-11 Vorrichtung zur Verbesserung der Bilddarstellung auf einem Display

Publications (3)

Publication Number Publication Date
EP1100068A2 true EP1100068A2 (fr) 2001-05-16
EP1100068A3 EP1100068A3 (fr) 2003-01-08
EP1100068B1 EP1100068B1 (fr) 2009-01-07

Family

ID=7928528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00123963A Expired - Lifetime EP1100068B1 (fr) 1999-11-11 2000-11-03 Dispositif pour améliorer l'affichage sur un dispositif de visualisation

Country Status (3)

Country Link
EP (1) EP1100068B1 (fr)
AT (1) ATE420429T1 (fr)
DE (2) DE19954029C1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439714A2 (fr) * 1990-01-05 1991-08-07 International Business Machines Corporation Méthode anti-aliasing pour un dispositif d'affichage graphique
JPH04180377A (ja) * 1990-11-14 1992-06-26 Matsushita Electric Ind Co Ltd 表示装置
EP0610829A1 (fr) * 1993-02-05 1994-08-17 Brooktree Corporation Système et procédé pour l'affichage sur un écran de visualisation, d'information provenant d'une mémoire graphique et d'une mémoire vidéo
US5764240A (en) * 1994-08-31 1998-06-09 S3 Incorporated Method and apparatus for correction of video tearing associated with a video and graphics shared frame buffer, as displayed on a graphics monitor
US5774110A (en) * 1994-01-04 1998-06-30 Edelson; Steven D. Filter RAMDAC with hardware 11/2-D zoom function
US5892551A (en) * 1996-10-23 1999-04-06 Nec Corporation Circuit and method for reducing flicker
JPH11231838A (ja) * 1998-02-10 1999-08-27 Fron Tec:Kk 表示装置およびその駆動方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168270A (en) * 1990-05-16 1992-12-01 Nippon Telegraph And Telephone Corporation Liquid crystal display device capable of selecting display definition modes, and driving method therefor
DE19714906A1 (de) * 1997-04-04 1998-10-08 Coin Inst Fuer Computer Integr Verfahren zur Verbesserung der Bildauflösung bei Farbbildwiedergabegeräten

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439714A2 (fr) * 1990-01-05 1991-08-07 International Business Machines Corporation Méthode anti-aliasing pour un dispositif d'affichage graphique
JPH04180377A (ja) * 1990-11-14 1992-06-26 Matsushita Electric Ind Co Ltd 表示装置
EP0610829A1 (fr) * 1993-02-05 1994-08-17 Brooktree Corporation Système et procédé pour l'affichage sur un écran de visualisation, d'information provenant d'une mémoire graphique et d'une mémoire vidéo
US5774110A (en) * 1994-01-04 1998-06-30 Edelson; Steven D. Filter RAMDAC with hardware 11/2-D zoom function
US5764240A (en) * 1994-08-31 1998-06-09 S3 Incorporated Method and apparatus for correction of video tearing associated with a video and graphics shared frame buffer, as displayed on a graphics monitor
US5892551A (en) * 1996-10-23 1999-04-06 Nec Corporation Circuit and method for reducing flicker
JPH11231838A (ja) * 1998-02-10 1999-08-27 Fron Tec:Kk 表示装置およびその駆動方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 492 (E-1278), 12. Oktober 1992 (1992-10-12) & JP 04 180377 A (MATSUSHITA ELECTRIC IND CO LTD), 26. Juni 1992 (1992-06-26) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13, 30. November 1999 (1999-11-30) & JP 11 231838 A (FRON TEC:KK), 27. August 1999 (1999-08-27) *

Also Published As

Publication number Publication date
EP1100068A3 (fr) 2003-01-08
DE19954029C1 (de) 2001-04-05
ATE420429T1 (de) 2009-01-15
EP1100068B1 (fr) 2009-01-07
DE50015511D1 (de) 2009-02-26

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