JP3956935B2 - Multi display device - Google Patents

Description

  The present invention relates to a multi-display device that constitutes display screens of a plurality of video display devices.

  In recent years, there are many cases where images are displayed on a huge screen aiming at visual effects in concerts and event venues. As such devices, display screens of a plurality of video display devices are used. In general, a multi-display device is used. In the multi-display device, continuity of each display screen is required so as not to give the viewer a sense of incongruity.

  A conventional multi display device and a chromaticity adjustment method in the multi display device will be described below.

  Conventionally, a chromaticity adjustment method in a multi-display device is known as described in JP-A No. 2002-116749. FIG. 4 is a block diagram showing a configuration of a projector having the function. As the multi-display device, a plurality of video display devices having the functions of FIG. 4 are used, and the displayed video images are arranged adjacent to each other. In FIG. 4, reference numeral 111 denotes an RGB converter that converts a YUV signal into an RGB signal, and reference numeral 112 denotes a selector that switches the path between the RGB signal and the YUV signal. Reference numeral 113 denotes a gamma correction unit that performs gamma correction on the video signal, and reference numeral 114 denotes a chromaticity adjustment unit that adjusts the chromaticity of the input video signal to a desired chromaticity. Reference numeral 115 denotes a display device driving unit that sends a video signal to a display device, and 116 denotes a projection unit that projects a video. Reference numeral 117 denotes a control unit that sets parameters in the chromaticity adjustment unit, and 120 denotes an input port, which is connected to a personal computer for calculating parameters and receives data.

The operation of the conventional multi-display device configured as described above will be described below. First, in order to adjust the primary color, a primary color video signal is input to each video output device. At that time, the chromaticity of each color is measured with a chromaticity meter, a value is input to a personal computer, and calculation is performed so that the chromaticities of the primary colors output from the respective video display devices coincide with each other. Via the input port, parameters are set in the chromaticity adjustment unit 114. By the above procedure, adjustment is performed so that the chromaticity of each video display device becomes uniform.
JP 2002-116749 A

  However, in the above conventional configuration, in order to adjust the chromaticity, it is necessary to measure the chromaticity and luminance of the primary color for each video display device. In addition, it is premised that measurement is performed in a dark room in order to match the chromaticity accurately, and it is very difficult to realize a dark environment in an actually used environment, and it is also possible to perform measurement. In many cases, it is difficult to perform final adjustment by visual inspection.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to provide a multi-display device that can easily perform color management.

The invention according to claim 1 of the present invention is a multi-display device in which a plurality of video display devices capable of arbitrarily setting primary colors and intermediate colors are arranged so that each display video is displayed adjacently, The video display device includes a color selection unit that can select hue, saturation, and brightness for each color, and a selection color display unit that displays a selection color of the color selection unit. The multi-display device is characterized in that the image is displayed at a substantially central portion of the display image corresponding to the image display device, and the selection color display portion is displayed around the display image of the color selection means .

 According to a second aspect of the present invention, the color selection means includes a hue / saturation selection unit capable of selecting a hue and saturation from a color palette, and a brightness selection unit capable of selecting a brightness from the color palette. The multi-display device according to claim 1.

  As described above, the present invention does not require a dark environment when performing color adjustment in a multi-display device, and without performing measurement, by selecting a color from a color palette and displaying the selected color around, An excellent effect is obtained that the color can be easily adjusted uniformly with other video display devices.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3.

(Embodiment 1)
FIG. 1 is a diagram showing an overall configuration of a multi-display apparatus according to the present invention.

  In FIG. 1, reference numerals 1 to 4 denote liquid crystal projectors, which form images on transmissive liquid crystal display devices, irradiate light from a light source, and project the transmitted light onto a screen by a projection lens. It is the composition. Each display image is installed so as to be projected adjacently. Images 101 to 104 displayed from each projector are color adjustment patterns to be displayed when color adjustment is performed, and 11 to 14 are color selection means, which display the hue, saturation, and brightness of each color as a color palette. Is. Reference numerals 21 to 24 denote selection color display units for displaying the colors selected by the color selection units 11 to 14, and the color selection units 11 to 14 display the approximate center portions of the respective display images corresponding to the liquid crystal projectors 1 to 4. The selection color display sections 21 to 24 are displayed around the display images of the color selection means 11 to 14.

  FIG. 2 is a diagram showing the configuration of the color selection means 11 to 14 of the present invention.

  In FIG. 2, reference numerals 31 to 34 denote hue / saturation selection units configured from a color palette for selecting hue and saturation, and reference numerals 41 to 44 denote brightness selection units configured from a color palette for selecting brightness.

  FIG. 3 is a block diagram showing a configuration of a video display device (liquid crystal projector) 1 provided with the present invention.

  As shown in FIG. 3, the liquid crystal projector 1 is an RGB converter 111 that converts a YUV signal into an RGB signal, and 112 is a selector that switches the path between the RGB signal and the YUV signal. Reference numeral 113 denotes a gamma correction unit that performs gamma correction on the video signal, and reference numeral 114 denotes a chromaticity adjustment unit that adjusts the chromaticity of the input video signal to a desired chromaticity. Reference numeral 115 denotes a display device driving unit that sends a video signal to a display device, and 116 denotes a projection unit that projects a video. A color adjustment pattern creating unit 118 creates a pattern used for color adjustment. Reference numeral 117 denotes a control unit that sets, in the chromaticity adjustment unit 114, parameters based on the colors determined by the color adjustment pattern creation unit.

  The operation of the primary color or intermediate color adjustment procedure in the multi-display apparatus configured as described above will be described with reference to FIGS. 1, 2, and 3. FIG.

  First, in order to perform color adjustment in the liquid crystal projector 1, a color adjustment pattern shown in FIG. The hue / saturation selection unit and the brightness selection unit of the color selection unit 11 display hue, saturation, and brightness colors in the vicinity of the primary color and intermediate color to be adjusted as a color palette. Further, the color selected from the color palette is displayed on the selected color display section 21 around the color selection means 11. A color is selected from the color palette displayed on the color selection unit 11 so that the color displayed on the selection color display unit 21 is equal to the selection color display units 22 to 23 of the other projectors.

  Next, the color data selected from the color adjustment pattern creation unit is sent to the control unit 117. Next, a value based on the color data is sent from the control unit 117 to the chromaticity adjustment unit 114. Here, the chromaticity adjustment unit 114 performs color adjustment using a matrix expressed by (Equation 1).

例えば、色データが８ｂｉｔで構成され［Ｒ，Ｇ，Ｂ］と表示されるとする。変更前の原色の赤は色データでは［２５５，０，０］とあらわされる。次にカラーパレットから色データ［２２０，１０，１０］となる値を選択したとすると、色度調整部１１４には（数２）に示す値が設定される。

For example, it is assumed that the color data is composed of 8 bits and is displayed as [R, G, B]. The primary color red before the change is represented by [255, 0, 0] in the color data. Next, assuming that the value to be the color data [220, 10, 10] is selected from the color palette, the value shown in (Expression 2) is set in the chromaticity adjustment unit 114.

以上のように本実施の形態によれば、隣接するプロジェクターの選択色表示部に表示される色を比較しながら、色選択手段１１に表示されたカラーパレットより設定すべき色選択を行うことができ、非常に簡単にマルチディスプレイ装置の原色および中間色調整を行うことができる。

As described above, according to the present embodiment, the color to be set can be selected from the color palette displayed on the color selection unit 11 while comparing the colors displayed on the selection color display unit of the adjacent projector. The primary color and intermediate color of the multi-display device can be adjusted very easily.

  The liquid crystal projectors 1 to 4 are installed so that the respective display images are projected adjacent to each other, and the color selection units 11 to 14 are displayed at the substantially central portions of the respective display images corresponding to the liquid crystal projectors 1 to 4 and are selected. Since the color display units 21 to 24 are displayed around each display image of the color selection means 11 to 14, the hue, saturation and brightness of the selection color display unit of the adjacent display image are adjusted while comparing with each other. It is possible to easily adjust the balance of the display image of each liquid crystal projector.

  In the above description, liquid crystal projectors 1 to 4 are used. However, the present invention is not limited to this as long as the display device can display images adjacent to each other. For example, the present invention can be applied to a reflection type projector using a reflection type device.

  The video display device according to the present invention does not require a dark environment when performing color adjustment in a multi-display device, and selects a color from a color palette without performing measurement, and displays the selected color in the surroundings. It has the excellent effect of being able to easily adjust the color evenly with other video display devices, and displays video on a huge screen for visual effects in concerts and event venues. It is useful as such a large visual device.

1 is an overall configuration diagram of a multi-display device according to Embodiment 1 of the present invention. Configuration diagram of color selection means according to Embodiment 1 of the present invention 1 is a block diagram illustrating a configuration of a liquid crystal projector according to a first embodiment. Block diagram showing the configuration of a projector having a conventional chromaticity adjustment function

Explanation of symbols

1, 2, 3, 4 Liquid crystal projector 11, 12, 13, 14 Color selection means 21, 22, 23, 24 Selected color display unit 31, 32, 33, 34 Hue / saturation selection unit 41, 42, 43, 44 Lightness selection unit 101, 102, 103, 104 Color adjustment pattern 111 RGB converter 112 Selector 113 Gamma correction unit 114 Chromaticity adjustment unit 115 Display device drive unit 116 Projection unit 117 Control unit 118 Color adjustment pattern creation unit 120 Input port

Claims (2)

A plurality of video display devices in which primary colors and intermediate colors can be arbitrarily set, and a multi-display device arranged so that each display video is displayed adjacently,
The video display device is a color selection means capable of selecting hue, saturation and brightness for each color;
A selection color display section for displaying a selection color of the color selection means;
With
The color selection means is displayed at a substantially central portion of a display image corresponding to each of the image display devices, and the selection color display portion is displayed around the display image of the color selection means. Display device. 2. The multi-display apparatus according to claim 1, wherein the color selection unit includes a hue / saturation selection unit capable of selecting hue and saturation from a color palette and a brightness selection unit capable of selecting lightness from the color palette.

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