JPH02273790A - Control method for large-screen display device - Google Patents

Control method for large-screen display device

Info

Publication number
JPH02273790A
JPH02273790A JP1095243A JP9524389A JPH02273790A JP H02273790 A JPH02273790 A JP H02273790A JP 1095243 A JP1095243 A JP 1095243A JP 9524389 A JP9524389 A JP 9524389A JP H02273790 A JPH02273790 A JP H02273790A
Authority
JP
Japan
Prior art keywords
display
image
display data
screen
original image
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
JP1095243A
Other languages
Japanese (ja)
Other versions
JP2728494B2 (en
Inventor
Noboru Hagiwara
萩原 昇
Shigenobu Sakai
酒井 重信
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1095243A priority Critical patent/JP2728494B2/en
Publication of JPH02273790A publication Critical patent/JPH02273790A/en
Application granted granted Critical
Publication of JP2728494B2 publication Critical patent/JP2728494B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141Constructional details thereof
    • H04N9/3147Multi-projection systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

PURPOSE:To delete boundary areas between screens and to make a large, high- definition display at the low cost by dividing display data of an original image into plural display data groups, and putting them together on a screen and also making adjacent areas between adjacent display data groups overlap with each other. CONSTITUTION:An image distributing function part 32 samples the display data of the original image optionally to divide the data into plural area display data 33 and then distribute them to plural display function parts 341 - 34n, projection function parts 351 - 35n are arranged corresponding to them, and an image composing function part 36 puts the outputs of the projection function parts 351 - 35n together into the projection image of one original image on the screen 37. Then, the area display data 33 are inputted including common original image data between adjacent areas and common parts are projected while overlapping one another neither excessively nor deficiently. Consequently, a large, high-definition original image can be enlarged and projected without any boundary area by using plural displays which are inferior in definition.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は複数の表示装置を用いて画面合成をして大画面
を実現する大画面表示装置の制御方法に関する。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to a method of controlling a large screen display device that combines screens using a plurality of display devices to realize a large screen.

〈従来の技術〉 従来、この種の発明は特開昭62−27788号公報に
見られる様な構成と成っていた。第7図、第8図、は特
開昭62−27788号公報に示された実施例である。
<Prior Art> Conventionally, this type of invention has had a configuration as seen in Japanese Patent Laid-Open No. 62-27788. 7 and 8 are examples shown in Japanese Patent Laid-Open No. 62-27788.

第7図は制御部の構成、第8図は画面の構成を示してい
る。第7図において、51は外部とのインタフェース部
、52はフレームバッファ制御装置53の全てを制御す
る為の全体m細部である。53はフレームバッファ54
 e制御部する為のフレ−ムバッファ制御装置である。
FIG. 7 shows the configuration of the control section, and FIG. 8 shows the configuration of the screen. In FIG. 7, 51 is an interface section with the outside, and 52 is an overall detail for controlling all of the frame buffer control device 53. In FIG. 53 is a frame buffer 54
This is a frame buffer control device for the e control section.

54はフレームバッファで、1つの表示素子56に表示
する画素分のデータを記憶する。56は表示素子であり
、複数画素の表示が可能である。55は表示素子56を
駆動する為の表示制御装置である。
A frame buffer 54 stores data for pixels to be displayed on one display element 56. A display element 56 is capable of displaying a plurality of pixels. 55 is a display control device for driving the display element 56.

次に動作について説明する。表示を行う場合には、複数
の表示制御が並列に動作し、フレームバッファ54の内
容を順次読み出して表示素子56に送咋表示する。この
時、各表示制御装置55は別々の表示素子56とフレー
ムバッファ54を制御しているので、各表示制御装置5
5を同期させる必要はなく、個々の表示制御装置55が
各々のタイミングで動作していても画面の表示には特に
影響はない。
Next, the operation will be explained. When displaying, a plurality of display controls operate in parallel, and the contents of the frame buffer 54 are sequentially read out and sent to the display element 56 for display. At this time, each display control device 55 controls a separate display element 56 and frame buffer 54, so each display control device 55 controls a separate display element 56 and frame buffer 54.
There is no need to synchronize the display control devices 55, and even if the individual display control devices 55 operate at different timings, there is no particular effect on the screen display.

フレームバッファ54への書き込み、つマリ画面の表示
内容の変更時には、全体制御部52が書き込むデータの
画面上の位置よりどのフレームバッファ54に書き込め
ば良いかを判定して対応するフレームバッファ制御装置
53にのみ書き込みデータを送り、そのフレームバッフ
ァ54に書き込む。この様にして表示素子56個々とし
ての分解能は小さいが複数用いることにより、大画面の
高分解能の表示装置を実現することが可能である。
When writing to the frame buffer 54 or changing the display contents of the frame buffer screen, the overall control unit 52 determines which frame buffer 54 should be used for writing based on the position of the data to be written on the screen, and the corresponding frame buffer control device 53 The write data is sent only to the frame buffer 54 and written to the frame buffer 54 thereof. In this way, although the resolution of each display element 56 is small, by using a plurality of display elements 56, it is possible to realize a large-screen, high-resolution display device.

〈発明が解決しようとする課題〉 この場合の全体画面は第8図の様になる。<Problem that the invention seeks to solve> The entire screen in this case looks like the one shown in FIG.

即ち、第8図において、原画像はMXN個に分割され、
各ブロック毎に表示素子が配置される。この為、各表示
素子56の物理的形状に依存した量で表示素子56間に
映像の存在しない帯状の領域や不自然な境界線57が存
在し、1つの画像として鑑賞する場合に大きな障害とな
る欠点を有していた。
That is, in FIG. 8, the original image is divided into MXN pieces,
A display element is arranged for each block. For this reason, there are strip-shaped areas where no image exists or unnatural boundaries 57 between the display elements 56 in an amount that depends on the physical shape of each display element 56, which becomes a major hindrance when viewing the image as a single image. It had some drawbacks.

〈発明の目的〉 本発明の目的は、複数の画面を合成する場合の課題であ
る不自然な境界領域の削除(シームレス化)を実現し、
大画面・高精細度表示装置を安価に実現出来る大画面表
示装置の制御方法を提供することにある。
<Objective of the Invention> The object of the present invention is to realize the removal of unnatural border areas (making them seamless), which is a problem when compositing multiple screens, and
It is an object of the present invention to provide a control method for a large screen display device that can realize a large screen, high definition display device at low cost.

く課題を解決するための手段〉 思上の問題点を解決する為、本発明の投写型表示装置と
なる大画面表示装置の制御方法は、1つの原画像の表示
データを連続した画素の集団として、複数の表示データ
群に分割し、複数の表示機能部に供給して表示させ1.
=表示画像を投写機能部により投写し、スクリーン上で
合成して、原画像の投写像を得る構成とし、隣接表示デ
ータ群間の隣接領域に共通の原画像データを含む様に重
複して取り込んだことを特徴としている。又、重複部分
の輝度値が重複しない部分の輝度値と同じとなるように
輝度1g!1機能を有することを特徴としている。
Means for Solving the Problems In order to solve the above-mentioned problems, a method for controlling a large screen display device which is a projection type display device of the present invention is to convert display data of one original image into a group of continuous pixels. The data is divided into a plurality of display data groups and supplied to a plurality of display function units for display.1.
= The display image is projected by the projection function unit and combined on the screen to obtain the projected image of the original image, and the adjacent areas between adjacent display data groups are imported redundantly so that common original image data is included. It is characterized by the fact that Also, the brightness is 1g so that the brightness value of the overlapping part is the same as the brightness value of the non-overlapping part! It is characterized by having one function.

く実 施 例〉 以下に本発明の一実施例を図面を用いて説明する。Example of implementation An embodiment of the present invention will be described below with reference to the drawings.

第1図は本発明の実施例であり、投写型表示装置の原理
図である。第1図において、31は原画像の表示データ
であり、パソコン、VTR等の映像信号を示す。32は
画像分配機能部であや、原画像の表示データを任意にサ
ンプリングして複数の領域表示データ33に分割して、
該領域表示データ33を複数の表示機能部34に分配す
る。33は画像分配機能部32で任意の整数N群に分割
された領域表示データ群であり、各々の区別は添字1〜
nで表す(33,〜33o;本発明では複数の同一構成
要素を用いる場合、各々の構成要素は同じ番号を使用し
、個別の識別には添字(1゜2.3.・・・ a、b、
c・・・等)を用いることにする。特に個々を区別する
必要の無い場合は添字は省略する。以下同じ。)。34
は表示機能部であり、領域表示データ33と同じ数だけ
用意される(341〜34n)。35は投写機能部であ
り、表示機能部に対応して配置される(351〜35.
)。36は画像合成機能部であ口、投写機能部35.〜
35..の各出力をスクリーン37上で1つの原画像の
投写像に合成する。38は画像合成機能部出力信号であ
る。
FIG. 1 shows an embodiment of the present invention, and is a diagram of the principle of a projection type display device. In FIG. 1, 31 is display data of an original image, which indicates a video signal from a personal computer, VTR, or the like. 32 is an image distribution function unit which arbitrarily samples the display data of the original image and divides it into a plurality of area display data 33.
The area display data 33 is distributed to a plurality of display function sections 34. 33 is a region display data group divided into N groups of arbitrary integers by the image distribution function unit 32, and each is distinguished by subscripts 1 to N.
Represented by n (33, ~ 33o; in the present invention, when a plurality of identical components are used, the same number is used for each component, and subscripts (1゜2.3...a, b,
c...etc.) will be used. Subscripts are omitted if there is no need to distinguish between them. same as below. ). 34
are display function units, which are prepared in the same number as the area display data 33 (341 to 34n). 35 is a projection function section, which is arranged corresponding to the display function section (351 to 35.
). 36 is an image synthesis function section; and a projection function section 35. ~
35. .. The respective outputs are combined into one projected image of the original image on the screen 37. 38 is an output signal of the image synthesis function section.

第2図は本発明の実施例についての説明図である。第2
図において25個の画素(あ〜の)からなる原画像(s
)は原画像の表示データ31を連続した画素の集団とし
て、(11、(b)2種類の領域表示データに分割し、
隣接する領域表示データ間に共通の原画像データ(う、
く、す、っ、ね)を含む様に取り込まれる。この2種類
の領域表示データは各々表示機能部34ζこ供給されて
表示像を結ぶ。この表示像艦よ投写機能部35でスクリ
ーン上に投写され、共通部分(う、く、す、つ、ぬ)が
過不足のなし1よう(こ重畳されて、原画像の投写像を
得ること力τ出来る。2値表示等の場合はこの重なり部
分の輝度値の差はそれほど問題に成らなt)s合もある
が、階調表示を行う場合等では必要(ζ応じて重なり部
分の輝度値を通常の値と成るように補正する。この結果
、重複部分の輝度値は他の部分と同等とな咋、つなぎ目
の無し)シームレス化が実現できる。
FIG. 2 is an explanatory diagram of an embodiment of the present invention. Second
In the figure, an original image (s) consisting of 25 pixels (a~no)
) divides the display data 31 of the original image into two types of area display data (11, (b) as a group of continuous pixels,
Common original image data (u,
It is incorporated to include ku, su, tsu, ne). These two types of area display data are respectively supplied to the display function section 34ζ to form a display image. This display image is projected onto the screen by the projection function unit 35, and the common parts (u, ku, su, tsu, nu) are superimposed so that the projected image of the original image is obtained. In the case of binary display, etc., the difference in the brightness value of the overlapping part is not so much of a problem.However, in the case of gradation display, etc., it is necessary (the difference in the brightness value of the overlapping part depends on The values are corrected to normal values.As a result, the brightness values of the overlapping parts are the same as those of other parts, making it possible to achieve seamlessness (no seams).

第3図は本発明の請求項(2)に示した実施例の説明図
である。第3図において、(b)、 (C1はスクリー
ン上に投写された、一部重複された2つの領域表示デー
タの投写映像であり、(d)の部分が重複領域となって
いる。従って、(d)領域は投写像が重畳される為、輝
度調整を行わないと重複しない部分との輝度の均一性が
保てない。即ち、(b)、 (c)の各々(d)領域を
除いた領域((el、 (fl)の輝度値が等しい時に
は、(dl領域の各表示は輝度値を半減する必要がある
。具体的な例としては、インタレース走査を行っている
TV信号のように奇数フィールド、偶数フィールドに2
分される場合は片方の表示装置の(dl領域に付いては
奇数フィールド、他の表示装置には偶数フィールドを各
々割当、他方のフィールド分は暗くすることにより等価
的に(山領域の他領域との輝度値の差異を最小限にする
ことが出来る。この結果、重複部分の輝度値は他の部分
と同等となり、つなぎ目の無いシームレス化が実現でき
る。
FIG. 3 is an explanatory diagram of an embodiment shown in claim (2) of the present invention. In FIG. 3, (b), (C1 is a projected image of two partially overlapping area display data projected on the screen, and the part (d) is an overlapping area. Therefore, Since the projected images are superimposed in the (d) area, the uniformity of brightness with the non-overlapping areas cannot be maintained unless the brightness is adjusted.In other words, each of (b) and (c) except for the (d) area When the luminance values of the area ((el, (fl)) are equal, it is necessary to reduce the luminance value by half for each display in the (dl area.A specific example is a TV signal using interlace scanning. odd field, 2 in even field
If the area is divided into two areas, one display device's (dl area) is assigned an odd field, the other display device is assigned an even field, and the other field is darkened. As a result, the brightness value of the overlapping part becomes equal to that of other parts, and seamlessness without any seams can be realized.

第4図も本発明の請求項(2)に示した実施例の説明図
である。第4図(A)において、(b) 、 (e)は
スクリーン37上に一部重複されて投写されrこ2つの
領域表示データの投写映像であり、(diの部分が重複
領域となっている。第4図(B)において投写像の重複
しない部分((61,(f))の輝度値は一定に制御さ
れているが、重複部分(dlの輝度値はその位置により
変化する様に制御されている。即ち、(b)の表示像(
I b)はその境界11gから右に座標系を設定すると
重複領域内では単調に減少し、(0)の表示像(I  
)では逆に単調に増加している。今、両者の和が丁度重
複しない領域と同じと成るようにすると、表示像(b)
から(clへの切り替わりが徐々に行われ、画面境界で
のマツ八効果による境界強調の影響も少なくシームレス
な画像合成が可能である。尚、第4図では重複領域内の
輝度変化を直線状で表しているが、人間の視覚特性等と
関連させ、任意の関数を選ぶことが出来る。
FIG. 4 is also an explanatory diagram of the embodiment shown in claim (2) of the present invention. In FIG. 4(A), (b) and (e) are projected images of the display data of these two areas that are partially overlapped and projected on the screen 37, and the portion (di) is the overlapping area. In Fig. 4(B), the brightness value of the non-overlapping portion ((61, (f)) of the projected images is controlled to be constant, but the brightness value of the overlapping portion (dl) is controlled to vary depending on its position. In other words, the displayed image in (b) (
If the coordinate system is set to the right from the boundary 11g, I b) decreases monotonically within the overlapping area, and the displayed image (I
), on the other hand, increases monotonically. Now, if we make the sum of the two exactly the same as the non-overlapping area, the displayed image (b)
The transition from (cl) to (cl) is performed gradually, and seamless image synthesis is possible with less influence of boundary emphasis due to the Matsuhachi effect at screen boundaries. However, any function can be selected in relation to human visual characteristics.

第5図も本発明の請求項(2)に示した実施例の説明図
である。第5図において、(al j (b) 。
FIG. 5 is also an explanatory diagram of the embodiment shown in claim (2) of the present invention. In FIG. 5, (al j (b).

(C1,(d)はスクリーン上に投写された、一部重複
された4つの領域表示データ33の投写映像であり、網
目の領域の部分が重複領域となっている。第6図はこれ
ら4つの投写像の合成像である。この合成像は輝度的に
は3つの領域に分けられる。即ち、第1領域((あ。
(C1, (d) is a projected image of four partially overlapping area display data 33 projected on the screen, and the mesh area is the overlapping area. This is a composite image of two projected images.This composite image can be divided into three areas in terms of brightness. Namely, the first area ((A).

い、か、き)、(え、お、け、と)、(た。I, ka, ki), (e, o, ke, to), (ta.

ちp’ipに)、(て、と、ね、の)、)、第2領域(
(う、<)、(さ、L、)、(せ、そ)。
Chi p'ip ni), (te, to, ne, no),), second area (
(U, <), (Sa, L,), (Se, So).

(つ、ぬ)1及び第3領域罵す)である。全体の輝度の
基準値を第1領域の値とし、均等に輝度値の配分を行う
と仮定すると各表示機能部の輝度値は第2領域で172
、第3領域で174となる。従って、各々の重複領域の
輝度値を1/2又は1/4とすることにより、投写像の
輝度値は均一化され、シームレスな1つの映像として鑑
賞出来る。
(tsu, nu) 1 and 3 areas (expletive). Assuming that the reference value of the overall brightness is the value of the first area and that the brightness values are distributed evenly, the brightness value of each display function part is 172 in the second area.
, 174 in the third region. Therefore, by setting the brightness value of each overlapping region to 1/2 or 1/4, the brightness values of the projected image are made uniform, and the projected image can be viewed as one seamless image.

〈発明の効果〉 以上述べた様に本発明によれば、大画面あるいは高精細
な原画像をそれよりも精細度の落ちるデイスプレィを複
数使用することにより、境界領域のないシームレスな拡
大投写出来るという利点がある。この結果、複数デイス
プレィを用いた大画面合成や高精細度デイスプレィの実
現、複数デイスプレィの同時投影による画質(階調表示
、カラー表示)向上及び高輝度デイスプレィの実現等に
顕著な貢献が期待できる。
<Effects of the Invention> As described above, according to the present invention, by using a plurality of displays with a lower resolution than that of a large screen or high-definition original image, it is possible to seamlessly enlarge and project a large screen or high-definition original image without border areas. There are advantages. As a result, significant contributions can be expected to the realization of large-screen composition and high-definition displays using multiple displays, improved image quality (gradation display, color display) through simultaneous projection of multiple displays, and realization of high-brightness displays.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係る大画面表示装置の制御方法の原理
を示す原理図、第2図〜第6図は本発明方法の各種例を
示す説明図、第7図は従来の制御装置を示す構成図、第
8図は従来技術の画面構成を示す説明図である。 図面中、 31・・・原画像の表示データ 32・・・画像分配機能部 33・・・領域表示データ 4・・・表示機能部 5・・・投写機能部 6・・・画像合成機能部 7・・・スクリーン 8・・・画像合成機能線出力信号 1・・インタフェース部 2・・・全体制御部 3・・・フレームバッファ1111114・・・フレー
ムバッファ 5・・表示制御限り 6・・・表示素子
FIG. 1 is a principle diagram showing the principle of a control method for a large screen display device according to the present invention, FIGS. 2 to 6 are explanatory diagrams showing various examples of the method of the present invention, and FIG. 7 is a diagram showing a conventional control device. The configuration diagram shown in FIG. 8 is an explanatory diagram showing the screen configuration of the prior art. In the drawing, 31... Original image display data 32... Image distribution function unit 33... Area display data 4... Display function unit 5... Projection function unit 6... Image synthesis function unit 7 ... Screen 8 ... Image synthesis function line output signal 1 ... Interface section 2 ... Overall control section 3 ... Frame buffer 1111114 ... Frame buffer 5 ... Display control limit 6 ... Display element

Claims (2)

【特許請求の範囲】[Claims] (1)原画面を表す面を、隣接する領域相互が隣接域で
重複面を有するように設定した複数の領域に分割し、原
画像を示す表示データのうち各領域に対応する表示デー
タを各領域ごとに取り出して複数の領域表示データとし
て画像分配機能部から出力し、 複数の領域表示データを複数の表示機能部にそれぞれ個
別に入力し、入力された領域表示データが示す表示画像
を各表示機能部で示し、 複数の表示画像を複数の投写機能部により投写し、しか
も前記隣接域に対応する像を重ねる状態にして各投写像
を1つのスクリーン上で合成して原画像に対応する投写
像を得る、ことを特徴とする大画面表示装置の制御方法
(1) Divide the surface representing the original screen into multiple regions set so that adjacent regions have overlapping surfaces, and display data corresponding to each region among the display data representing the original image. Extract each area and output it as multiple area display data from the image distribution function unit, input the multiple area display data to the multiple display function units individually, and display the display image indicated by the input area display data for each display. A plurality of display images are projected by a plurality of projection function parts, and the images corresponding to the adjacent areas are superimposed, and each projected image is combined on one screen to project the image corresponding to the original image. A method for controlling a large screen display device, comprising: obtaining an image.
(2)スクリーン上で重ねて投写した部分とそうでない
部分との輝度が等しくなるように、前記表示機能部にて
輝度調整をすることを特徴とする請求項(1)記載の大
画面表示装置の制御方法。
(2) The large-screen display device according to claim (1), wherein the display function section adjusts the brightness so that the brightness of the overlapped portion and the other portion of the screen are equal. control method.
JP1095243A 1989-04-17 1989-04-17 Control method of large screen display device Expired - Lifetime JP2728494B2 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05173523A (en) * 1991-05-24 1993-07-13 Hitachi Ltd Multiscreen display
JPH08254661A (en) * 1994-11-02 1996-10-01 Texas Instr Inc <Ti> Method and apparatus for compensation of matching error in horizontal direction and vertical direction of display device
WO1999031877A1 (en) * 1997-12-12 1999-06-24 Hitachi, Ltd. Multi-projection image display device
WO2000017708A3 (en) * 1998-09-23 2000-12-28 Honeywell Inc Method and apparatus for providing a seamless tiled display
JP2002077778A (en) * 2000-08-30 2002-03-15 Matsushita Electric Ind Co Ltd Video projector device
JP2003174602A (en) * 2001-12-05 2003-06-20 Olympus Optical Co Ltd Image display system
US8872733B2 (en) 2011-04-20 2014-10-28 Sharp Kabushiki Kaisha Liquid crystal display device, multi-display device, method for determining light intensity, and storage medium
WO2018032876A1 (en) * 2016-08-19 2018-02-22 Boe Technology Group Co., Ltd. Display control device, display control method, and display apparatus
CN114449244A (en) * 2020-10-31 2022-05-06 华为技术有限公司 Image quality adjusting method and device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05173523A (en) * 1991-05-24 1993-07-13 Hitachi Ltd Multiscreen display
JPH08254661A (en) * 1994-11-02 1996-10-01 Texas Instr Inc <Ti> Method and apparatus for compensation of matching error in horizontal direction and vertical direction of display device
WO1999031877A1 (en) * 1997-12-12 1999-06-24 Hitachi, Ltd. Multi-projection image display device
WO2000017708A3 (en) * 1998-09-23 2000-12-28 Honeywell Inc Method and apparatus for providing a seamless tiled display
US6377306B1 (en) 1998-09-23 2002-04-23 Honeywell International Inc. Method and apparatus for providing a seamless tiled display
EP1271944A1 (en) * 1998-09-23 2003-01-02 Honeywell Inc. Method and apparatus for providing a seamless tiled display
JP2002077778A (en) * 2000-08-30 2002-03-15 Matsushita Electric Ind Co Ltd Video projector device
JP4574819B2 (en) * 2000-08-30 2010-11-04 パナソニック株式会社 Video projector device
JP2003174602A (en) * 2001-12-05 2003-06-20 Olympus Optical Co Ltd Image display system
US8872733B2 (en) 2011-04-20 2014-10-28 Sharp Kabushiki Kaisha Liquid crystal display device, multi-display device, method for determining light intensity, and storage medium
WO2018032876A1 (en) * 2016-08-19 2018-02-22 Boe Technology Group Co., Ltd. Display control device, display control method, and display apparatus
CN114449244A (en) * 2020-10-31 2022-05-06 华为技术有限公司 Image quality adjusting method and device

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