WO2015033452A1 - Système d'affichage d'image et procédé d'affichage d'image - Google Patents

Système d'affichage d'image et procédé d'affichage d'image Download PDF

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Publication number
WO2015033452A1
WO2015033452A1 PCT/JP2013/074160 JP2013074160W WO2015033452A1 WO 2015033452 A1 WO2015033452 A1 WO 2015033452A1 JP 2013074160 W JP2013074160 W JP 2013074160W WO 2015033452 A1 WO2015033452 A1 WO 2015033452A1
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WIPO (PCT)
Prior art keywords
video
video display
output
optical element
region
Prior art date
Application number
PCT/JP2013/074160
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English (en)
Japanese (ja)
Inventor
達夫 最首
芳晴 桃井
Original Assignee
株式会社東芝
東芝ライフスタイル株式会社
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.)
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Application filed by 株式会社東芝, 東芝ライフスタイル株式会社 filed Critical 株式会社東芝
Priority to JP2015535246A priority Critical patent/JPWO2015033452A1/ja
Priority to PCT/JP2013/074160 priority patent/WO2015033452A1/fr
Publication of WO2015033452A1 publication Critical patent/WO2015033452A1/fr

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    • 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
    • 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

Definitions

  • Embodiments described herein relate generally to a video display system and a video display method.
  • the video display system includes a plurality of video display devices and a video distributor.
  • the plurality of video display devices are arranged adjacent to each other.
  • the video distributor distributes the source video so as to output a plurality of overlapping output videos to each of the plurality of video display devices in a region corresponding to a boundary portion of the plurality of video display devices.
  • Each of the plurality of video display devices includes a display unit, an optical element, and a video processing unit.
  • the display unit includes a video display unit on which video is displayed and a frame unit provided at an outer edge of the video display unit.
  • the optical element expands the image displayed on the image display unit to the frame unit side.
  • the video processing unit performs a high image quality process to improve the quality of the output video from the video distributor, and then the area expanded by the optical element in the output video at a reduction rate corresponding to the enlargement rate of the optical element. Correction processing including reduction processing is performed.
  • FIG. 1 is a block diagram showing the overall configuration of the video display system according to the present embodiment.
  • FIG. 2 is a schematic diagram showing an example of a tiling display configured by arranging a plurality of video display devices according to the present embodiment.
  • FIG. 3 is a schematic diagram for explaining the enlargement direction of the image by the linear lens (optical element) of the image display device according to the present embodiment.
  • FIG. 4 is a schematic diagram for explaining an image enlarging direction by the circular lens (optical element) of the image display device according to the present embodiment.
  • FIG. 5 is a schematic diagram for explaining how an image output from the image display apparatus according to the present embodiment is seen.
  • FIG. 6 is a schematic diagram for explaining an example of an output video output from the video distributor according to the present embodiment.
  • FIG. 1 is a block diagram showing the overall configuration of the video display system according to the present embodiment.
  • FIG. 2 is a schematic diagram showing an example of a tiling display configured by arranging a plurality
  • FIG. 7 is a diagram for explaining an example of correction processing by the video processing unit of the video display device according to the present embodiment.
  • FIG. 8 is a flowchart for explaining an example of the processing flow of the video processing unit of the video display device according to the present embodiment.
  • FIG. 9 is a schematic diagram illustrating an example of a tiling display configured by arranging a plurality of video display devices according to a modification of the present embodiment.
  • FIG. 10 is a schematic diagram for explaining an example of output video output from the video distributor according to the modification shown in FIG.
  • FIG. 11 is a schematic diagram illustrating an example of an optical element of a video display device according to a modification of the present embodiment.
  • a video display system 1000 includes a plurality (four) of video display devices 100, and a video distributor 200 that distributes and outputs video to the four video display devices 100. Is provided.
  • Each of the four video display devices 100 includes a display unit 51 and a video processing unit 52.
  • the four video display devices 100 are arranged adjacent to each other. Specifically, the four video display devices 100 are arranged in a tile shape, two in the horizontal direction (X direction) and two in the vertical direction (Y direction). The four video display devices 100 arranged in a tile shape in this way constitute one tiling display capable of displaying a large connected video.
  • each of the four video display devices 100 includes a video display unit 10, a frame unit 20, and an optical element 30.
  • the video display unit 10 has a rectangular shape (rectangular shape) having a long side (first side) 10a extending in the X direction (first direction) and a short side (second side) 10b extending in the Y direction (second direction). ).
  • the frame portion 20 surrounds the outer peripheral portion (outer edge portion: a portion constituted by the long side 10a and the short side 10b) of the video display portion 10 (see the dotted mesh portion in FIG. 2).
  • Ten long sides 10 a and short sides 10 b are provided so as to extend.
  • the video display unit 10 and the frame unit 20 constitute a display unit 51 as a display panel.
  • the viewer is required to display a video with a large connection.
  • the frame portion 20 is visually recognized.
  • the viewer is required to display a rectangular outer frame configured by the above.
  • an outer peripheral area (outer edge area: refer to a reduced area R2 in FIG. 5 described later) and a frame part located on the outer peripheral part (outer edge part: boundary part with the frame part 20) side in the video display unit 10.
  • the optical element 30 is provided so as to cover the frame 20, and the image displayed in the outer peripheral region is enlarged at least to the frame part 20 side by the optical element 30, thereby preventing the viewer from seeing the frame part 20.
  • the tiling display constituted by the four video display devices 100 functions as a single display capable of displaying a large connected video.
  • the video display unit 10 is a region corresponding to the optical element 30 in the video display unit 10 so that a viewer can visually recognize a video that does not fail even when the video is enlarged by the optical element 30.
  • an image reduced at a reduction rate corresponding to the enlargement rate of the optical element 30 is output.
  • the optical element 30 has, for example, a linear lens 31 having a rectangular shape provided so as to extend along the four sides of the video display unit 10 and, for example, a rectangular shape or a square shape provided at four corners of the video display unit 10.
  • a combination with the circular lens 32 is used.
  • the linear lens 31 is configured to enlarge an image output from the outer peripheral area of the image display unit 10 only in one direction in the X direction or the Y direction (see an arrow in FIG. 3).
  • the circular lens 32 is configured to expand an image output from the outer peripheral area of the image display unit 10 in two directions (see arrows in FIG. 4) in the X direction and the Y direction.
  • the linear lens 31 has an optical axis 11 extending along the side of the video display unit 10, and the video output from the outer peripheral region is line-symmetric with respect to the optical axis 11. It is configured to expand.
  • 3 is an enlarged view of a rectangular portion 151 located on one side in the X direction (left side in FIG. 3) of the tiling display shown in FIG. 2 and in the vicinity of the center in the Y direction. It is a schematic diagram.
  • the circular lens 32 has a center C at a position where two optical axes l1 corresponding to two adjacent linear lenses 31 intersect, and is output from the outer peripheral region. Is enlarged point-symmetrically with respect to the center C.
  • FIG. 4 is an enlarged schematic view of a rectangular portion 152 located near the center in the X and Y directions of the tiling display shown in FIG.
  • the optical element 30 (the linear lens 31 and the circular lens 32) is provided so as to extend in parallel to the video display unit 10. More specifically, the linear lens 31 is configured by a Fresnel-shaped lens that is divided line-symmetrically with respect to the optical axis 11 (see FIG. 3). Similarly, the circular lens 32 is configured by a Fresnel-shaped lens that is divided point-symmetrically (concentrically) with respect to the center C (see FIG. 4).
  • the thickness t (see FIG. 5) of the optical element 30 can be made smaller than that of a normal convex lens.
  • the video display unit 10 of the video display device 100 is reduced at a normal area R ⁇ b> 1 where a normal video that is not enlarged or reduced is output and a reduction ratio corresponding to the enlargement ratio of the optical element 30.
  • a reduced area R2 where the reduced video (reduced video) is output.
  • the two-dot chain line in FIG. 5 indicates an image (virtual image) visually recognized by the viewer via the optical element 30.
  • the reduced area R2 is provided in the outer peripheral area of the video display unit 10, and the normal area R1 is provided in the inner area inside the outer peripheral area.
  • the optical element 30 (magnification rate is m) enlarges the reduced image output from the reduction region R2 as a virtual image V1 having a width W2 larger than the entire width W1 of the optical element 30.
  • the width W3 of the reduced region R2 is smaller than the entire width W1 of the optical element 30.
  • the width W2 of the virtual image V1 corresponding to the reduced region R2 is larger than the entire width W1 of the optical element 30.
  • the viewer is usually Since the video (virtual image V1) in which the reduced video (reduced area R2) is enlarged is viewed instead of the video (virtual image V2) in which the video (normal area R1) is enlarged, it is possible to suppress the viewer from feeling uncomfortable. be able to.
  • the virtual image V1 has a region R3 that protrudes outward from the end portion on the outer side (the frame portion 20 side) of the video display device 100. Then, in a partial region R4 of the reduced region R2 corresponding to the region R3, a video (overlapping video) that overlaps with a video displayed near the end on the frame 20 side of the adjacent video display device 100 is reduced. Has been output.
  • this region R4 is referred to as an overlapping region.
  • the video display device 100 can be viewed in the region R3 by the amount of overlapping video. It is possible to suppress the viewer from feeling uncomfortable at the boundary portion.
  • a spacer member is provided between the image display unit 10 and the frame unit 20 and the optical element 30.
  • This spacer member is provided to maintain the distance in the front-rear direction (Z direction) between the image display unit 10 (frame unit 20) and the optical element 30 at a predetermined distance D (see FIG. 5).
  • a spacer member transparent resin etc. can be considered, for example.
  • FIG. 2 a video distributor 200 and a video processor for displaying the normal region R1 and the reduced region R2 (overlapping region R4) as described above on the video display unit 10.
  • the configuration of 52 will be described.
  • the video display devices 100 arranged in the upper left, upper right, lower left, and lower right in FIGS. 2 and 7 are referred to as video display devices 100a, 100b, 100c, and 100d, respectively.
  • the optical element 30 is not shown for simplicity.
  • the video distributor 200 converts a source video IM1 having a large connection into a region corresponding to the boundary between the four video display devices 100a to 100d (width around the broken line A). And an output region IM1a to IM1d overlapping each other in the region extending in the Y direction with W4 and the region extending in the X direction with the width W5 around the broken line B). ing.
  • the video distributor 200 is configured to output the four output videos IM1a to IM1d distributed in this manner to the four video display devices 100a to 100d, respectively.
  • the output video IM1a output to the video display device 100a is represented by a solid rectangle with hatching, and the output video IM1b to IM1d output to each of the other video display devices 100b to 100d is one point. It is represented by a dotted line rectangle.
  • the video processing unit 52 for the output videos IM1a to IM1d increases the image quality of the output videos IM1a to IM1d when the output videos IM1a to IM1d as described above are input, respectively.
  • the correction processing is performed to correct the output video IM1a to IM1d according to the video display unit 10.
  • the high image quality processing means super-resolution processing for improving the resolution of the output video IM1a to IM1d, contrast correction processing for correcting the contrast of the output video IM1a to IM1d, and improvement of the luminance of the output video IM1a to IM1d.
  • the correction process is a process of appropriately clipping or enlarging / reducing the output videos IM1a to IM1d in accordance with the normal area R1 and the reduced area R2 (overlapping area R4) in the video display unit 10. is there.
  • the correction process includes a process of reducing the area expanded by the optical element 30 in the output images IM1a to IM1d at a reduction ratio corresponding to the enlargement ratio of the optical element 30.
  • the correction process includes an outer periphery that overlaps with the optical element 30 in the video display unit 10 in a state where the area enlarged by the optical element 30 in the output video IM1a to IM1d is reduced at the reduction ratio.
  • the area overlapping the other output videos IM1a to IM1d among the output videos IM1a to IM1d is reduced to the other video display device 100 in the outer peripheral area in a state where the area is reduced at the reduction ratio.
  • This includes a process of outputting to an adjacent area provided on the adjacent side area described as an overlapping area in FIG. 5 described above: see R4 in FIG. 7).
  • the correction process is performed by converting an area that is not enlarged by the optical element 30 in the output images IM1a to IM1d into an inner area that does not overlap the optical element 30 in the image display unit 10 (the normal area in FIG. 5). And the processing described in FIG. 7 (refer to reference numeral R1 in FIG. 7).
  • This processing flow starts when the output videos IM1a to IM1d from the video distributor 200 are input to the video processing unit 52.
  • step S1 image quality improvement processing is performed on the output video images IM1a to IM1d.
  • step S1 as described above, the super-resolution processing for improving the resolution of the output video IM1a to IM1d, the contrast correction processing for correcting the contrast of the output video IM1a to IM1d, and the luminance of the output video IM1a to IM1d.
  • Brightness enhancement processing for improving the image quality, color correction processing for correcting the color tone of the output video IM1a to IM1d, and the like are performed. Then, the process proceeds to step S2.
  • step S2 correction processing is performed on the output images IM1a to IM1d with high image quality.
  • step S2 a process of appropriately clipping or enlarging / reducing the output videos IM1a to IM1d according to the normal area R1 and the reduced area R2 (overlapping area R4) in the video display unit 10 is performed. Then, the process ends.
  • the video processing unit 52 of the video processing device 100 (100a to 100d) outputs the output video IM1a when the output video IM1a to IM1d is input from the video distributor 200.
  • image quality enhancement processing for improving the image quality of IM1d
  • processing for reducing the area expanded by the optical element 30 in the output images IM1a to IM1d with a reduction ratio corresponding to the enlargement ratio of the optical element 30 (correction) Processing Thereby, as an example, it is possible to improve the image quality of the output videos IM1a to IM1d while maintaining the effect of correction on the output videos IM1a to IM1d.
  • the correction process includes a reduction process for an image output to at least an area (reduction area R2) corresponding to the optical element 30 in the image display unit 10. These three types of processing are performed by the video distributor 200 and the four video display devices 100.
  • the video display apparatus 100 may have a built-in function for performing high image quality processing, regardless of whether or not to display a video having a large connection. For this reason, it is preferable that the image quality enhancement processing is performed not by the video distributor 200 but by the video display device 100.
  • the correction process includes the reduction process of the video output from the area corresponding to the optical element 30 in the video display unit 10 (reduction area R2). It is preferable to do this.
  • the video distributor 200 distributes a large source video IM1 into four output videos IM1a to IM1d having regions overlapping each other, and each of the four video display devices 100 Therefore, the image quality enhancement process and the correction process are performed.
  • the correction process includes a reduction process for an image output from an area (reduction area R2) corresponding to the optical element 30 in the image display unit 10, but an area (not corresponding to the optical element 30 in the image display part 10).
  • the reduction process for the normal area R1) is not included.
  • the correction process may include an enlargement process for the normal region R1. In this case, if the image quality improvement process is performed after the correction process is performed, the same image quality improvement process is performed on the reduced video and the normal video (or the enlarged video). After the image quality improvement processing is performed, the reduced image is enlarged and displayed by the optical element 30, and the normal image (or the enlarged image) is displayed without being enlarged by the optical element 30. .
  • the region where the reduction correction is performed by the image quality improvement processing and the region where the reduction correction is not performed (including the region where the magnification correction is performed) Inconsistencies in the image may occur at the boundary or the effect of correction may be lost.
  • the correction process is performed after the image quality improvement process is performed, the image quality improvement process is performed after the correction process is performed as described above. The occurrence of inconvenience can be suppressed.
  • the optical element 30 is provided so as to cover the outer peripheral area of the video display unit 10 (the area described as the reduced area in FIG. 5 above: refer to the reference numeral R2 in FIG. 7).
  • the correction processing by the video processing unit 52 includes processing for outputting the area enlarged by the optical element 30 in the output videos IM1a to IM1d to the outer peripheral area in a state where the area is reduced at the reduction ratio.
  • a part of the output images IM1a to IM1d can be reliably enlarged to the adjacent image display device 100 side by the optical element 30, so that a plurality of image display devices arranged so as to be adjacent to each other. It is possible to ensure that the viewer can visually recognize an image without failure at the boundary portion of 100.
  • the correction processing by the video processing unit 52 is a region that overlaps with the other output videos IM1a to IM1d of the output videos IM1a to IM1d (width around the broken line A in FIG. 6).
  • the other area in the outer peripheral area is reduced at the reduction rate with respect to the area extending in the Y direction with W4 and the area extending in the X direction with the width W5 around the broken line B).
  • the region overlapping with the other output images IM1a to IM1d in the output images IM1a to IM1d can be more reliably expanded to the adjacent image display device 100 side by the optical element 30. It is possible to make the viewer more surely view a video that does not fail at the boundary portion between the plurality of video display devices 100 arranged so as to be adjacent to each other.
  • the correction processing by the video processing unit 52 is a region that is not enlarged by the optical element 30 in the output video IM1a to IM1d (a region that is output as a normal video without being reduced).
  • the image display unit 10 includes a process of outputting to an inner area provided on the inner side of the outer peripheral area (the area described as the normal area in FIG. 5; see the reference numeral R1 in FIG. 7). Thereby, as an example, it is possible to prevent a viewer from visually recognizing a video that has failed due to the optical element 30 expanding a normal video that does not need to be enlarged.
  • a tiling display configured by four video display devices is shown.
  • a tiling display configured by a plurality of video display devices of three or less is used. It is also possible to use a tiling display composed of a plurality of five or more video display devices.
  • the tiling display according to the modification shown in FIG. 9 is configured by arranging nine video display devices 101 (101a to 101i) in a tile shape, three in each of the X direction and the Y direction.
  • the video distributor (not shown) converts the source video IM2 having a large connection into nine video display devices 101 (101a to 101i). ) In the region corresponding to the boundary portion (see the broken line in FIG. 10).
  • FIG. 10 for the sake of simplicity, only the output video IM2e output to the video display device 101e (see FIG. 9) located in the center in the X direction and the Y direction is illustrated.
  • a tiling display configured by arranging a plurality of video display devices in a tile shape.
  • a plurality of video display devices are aligned. It is also possible to use a tiling display configured by being arranged in a row.
  • optical elements are provided so as to correspond to all four sides of each of the plurality of video display devices.
  • An element may be provided.
  • optical element comprised by the combination of the linear lens and the circular lens
  • optical systems other than a linear lens and a circular lens as other embodiment. is there.
  • the frame portion 20 and the virtual image V11 formed by enlarging the reduced image output to the reduced region R12 by the optical element 130 overlap each other as in the above embodiment. Therefore, it is possible to suppress the viewer from visually recognizing the frame portion 20.
  • the virtual image V11 has a region R13 that protrudes from the frame portion 20, and a region (R14) in the image display unit 10 corresponding to the region R13 overlaps with the image displayed on the adjacent image display device ( Duplicate video) is output.
  • the video distributor (not shown) is an area corresponding to a boundary portion of a plurality of video display devices. Are distributed to a plurality of overlapping output videos.
  • the video processing unit (not shown) performs high image quality processing (super-resolution processing, contrast correction processing, luminance correction processing, color correction processing, etc.) on the output video from the video distributor. After performing the processing, the output video is appropriately clipped or enlarged / reduced in accordance with the normal region R11 and the reduced region R12 (overlapping region R14) in the video display unit 10 (correction processing). Has been.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

Selon un mode de réalisation, l'invention se rapporte à un système d'affichage d'image doté d'une pluralité de dispositifs d'affichage d'image et d'un distributeur d'image. Lesdits dispositifs d'affichage d'image sont disposés de manière à être contigus. Le distributeur d'image distribue une image source de sorte qu'une pluralité d'images de sortie qui se chevauchent dans une région correspondant aux limites entre la pluralité de dispositifs d'affichage d'image soient respectivement émises vers cette pluralité de dispositifs d'affichage d'image. Une unité de traitement d'image située dans chaque dispositif d'affichage d'image traite l'image de sortie provenant du distributeur d'image pour améliorer la qualité de cette image, puis réalise un traitement de correction comprenant un processus de réduction d'une région de l'image de sortie respective, cette région étant destinée à être agrandie par un élément optique.
PCT/JP2013/074160 2013-09-06 2013-09-06 Système d'affichage d'image et procédé d'affichage d'image WO2015033452A1 (fr)

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JP2015535246A JPWO2015033452A1 (ja) 2013-09-06 2013-09-06 映像表示システムおよび映像表示方法
PCT/JP2013/074160 WO2015033452A1 (fr) 2013-09-06 2013-09-06 Système d'affichage d'image et procédé d'affichage d'image

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017097120A (ja) * 2015-11-20 2017-06-01 シャープ株式会社 表示制御装置、マルチディスプレイシステム、およびマルチディスプレイシステムの表示方法

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JP2000180964A (ja) * 1998-12-21 2000-06-30 Nippon Hoso Kyokai <Nhk> マルチ投射型スクリーン
JP2004524551A (ja) * 2000-11-27 2004-08-12 シームレス ディスプレイ リミテッド ビジュアル・ディスプレイスクリーン装置
JP2009008945A (ja) * 2007-06-28 2009-01-15 Sony Corp 画像信号処理装置、画像信号処理方法およびプログラム
WO2009066436A1 (fr) * 2007-11-22 2009-05-28 Sharp Kabushiki Kaisha Dispositif d'affichage
JP2009130556A (ja) * 2007-11-22 2009-06-11 Hitachi Ltd 映像表示装置
WO2011067996A1 (fr) * 2009-12-02 2011-06-09 シャープ株式会社 Dispositif et procede d'affichage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000180964A (ja) * 1998-12-21 2000-06-30 Nippon Hoso Kyokai <Nhk> マルチ投射型スクリーン
JP2004524551A (ja) * 2000-11-27 2004-08-12 シームレス ディスプレイ リミテッド ビジュアル・ディスプレイスクリーン装置
JP2009008945A (ja) * 2007-06-28 2009-01-15 Sony Corp 画像信号処理装置、画像信号処理方法およびプログラム
WO2009066436A1 (fr) * 2007-11-22 2009-05-28 Sharp Kabushiki Kaisha Dispositif d'affichage
JP2009130556A (ja) * 2007-11-22 2009-06-11 Hitachi Ltd 映像表示装置
WO2011067996A1 (fr) * 2009-12-02 2011-06-09 シャープ株式会社 Dispositif et procede d'affichage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017097120A (ja) * 2015-11-20 2017-06-01 シャープ株式会社 表示制御装置、マルチディスプレイシステム、およびマルチディスプレイシステムの表示方法

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