JP2004062070A - Video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video display device which displays in one screen the image to be corrected as well as the control information to be corrected of a display unit. <P>SOLUTION: The device is equipped with a plurality of video display means 110 for displaying a test pattern video on a screen formed by a display unit 131, a plurality of display control means 120 for controlling each display unit 131, a plurality of control information storage means 130 for storing each piece of control information of the display unit 131, an image data signal generation means 140 for generating the image data signal of the preset test pattern image, a display unit selection means 150 for selecting one display unit 131, a control information synthesis means 160 for synthesizing a cursor and the control information in an image, and a means 170 for modifying control information based on the information for modifying control information. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a video display device installed in a large stadium, a multipurpose hall, an outer wall of a building, or the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as this type of video display device, one described in JP-A-2001-290471 is known. As shown in FIG. 6, this conventional video display device 1 is connected to an input device 3 having an operation panel 2, and has a display unit 4 in which picture elements composed of light emitting elements of three primary colors are integrated and arranged; A video display unit 5 composed of a plurality of the display units 4 arranged in a matrix, a distribution board 6 for supplying power to the video display unit 5, and a video data signal distributed to a plurality of display units 4 arranged in a matrix. A display data distributor 7 and a video controller 8 that controls the video display unit 5 via the display data distributor 7 are provided. An external terminal such as a personal computer is used as the input device 3.
[0003]
The image control unit 8 includes a read-only memory (hereinafter, simply referred to as ROM) 9, a central processing unit (hereinafter, simply referred to as CPU) 10, and a display panel control memory 11. The ROM 9 stores various configuration information and setting information that are control parameters for the video display device 1. When a command is input from the input device 3 to the CPU 10, the CPU 10 reads a control parameter corresponding to the input command from the ROM 9, and stores data based on the read control parameter as control data in the display panel control memory 11. It is designed to be written.
[0004]
Further, the video control section 8 controls the video display section 5 based on the control data written in the display panel control memory 11. Therefore, when the specification of the video display device 1 is changed, various control parameters stored in the ROM 9 are updated by operating the input device 3 or replaced with the ROM 9 storing the new control parameters. This corresponds to a change in the specifications of the display device 1.
[0005]
In such an image display device 1, the luminance and chromaticity of an image are adjusted to a preset standard for each display unit 4, but a screen formed by a plurality of display units 4 has a plurality of display units. There is a display unit 4 that stands out due to differences in luminance and chromaticity between units. Further, when the display unit 4 is replaced for repair, the replaced display unit 4 becomes bright and conspicuous as compared with the other display units 4. In order to prevent such a difference in luminance or chromaticity between display units from being recognized as luminance unevenness or chromaticity unevenness, an operator performs a correction operation by the following method.
[0006]
That is, the correction operation for correcting the unevenness in luminance and chromaticity of the image displayed on the screen formed by the plurality of display units 4 is performed by the operator using the display unit 4 to be corrected displayed on the display unit of the input device 3. And the image of the display unit 4 to be corrected is visually confirmed.
[0007]
[Problems to be solved by the invention]
However, when a conventional video display device performs a correction operation for correcting luminance unevenness and chromaticity unevenness of an image displayed on a screen formed by a plurality of display units, an image of a display unit to be corrected is not used. Since the luminance unevenness and the chromaticity unevenness have to be corrected while checking the control information of the display unit to be corrected on separate screens, there is a problem that the correction work is complicated.
[0008]
The present invention has been made in order to solve the conventional problem, when the operator performs a correction work to correct unevenness in luminance and chromaticity of an image displayed on a screen formed by a plurality of display units, A video display device that can facilitate correction work by correcting luminance unevenness and chromaticity unevenness while checking the image of the display unit to be corrected and the control information of the display unit to be corrected on one screen. To provide.
[0009]
[Means for Solving the Problems]
The video display device of the present invention displays video data signal generating means for generating a video data signal of a preset test pattern video, and displays the preset test pattern video on a screen formed by a plurality of display units. Video display means, a plurality of control information storage means for respectively storing control information of the plurality of display units, and each of the plurality of display units being controlled based on the control information stored in the plurality of control information storage means A plurality of display control means, a display unit selection means for selecting one display unit from the plurality of display units, and a display unit selected by the display unit selection means for the preset test pattern image. Control information synthesizing means for synthesizing the cursor indicating the display and the control information; and the selected display unit. The change control information to acquire the change information has a configuration in which a control information changing means for changing the control information based on the change information.
[0010]
With this configuration, when performing a correction operation for correcting luminance unevenness and chromaticity unevenness of an image displayed on a screen formed by a plurality of display units, the image of the display unit to be corrected and the control information of the display unit to be corrected Can be changed on one screen while the control information is changed.
[0011]
Also, the video display device of the present invention divides the screen into a plurality of groups, and the control information synthesizing means includes a first group including the selected display unit and a second group including the control information. Is determined whether the first group and the second group match, and when it is determined that the first group and the second group match, the position where the control information is displayed is changed to a set position. .
[0012]
With this configuration, when the group including the display unit to be corrected and the group in which the control information of the display unit to be corrected matches are displayed, the position at which the control information is displayed can be changed to a preset position. it can.
[0013]
In the video display device according to the present invention, the control information includes at least brightness control information for controlling brightness of the display unit, and the control information changing unit changes the brightness control information based on the change information. It has a configuration.
[0014]
With this configuration, when performing a correction operation for correcting luminance unevenness of an image displayed on a screen formed by a plurality of display units, the image of the display unit to be corrected and the luminance control information of the display unit to be corrected are combined. The brightness control information can be changed while checking on one screen.
[0015]
Further, in the video display device according to the present invention, the control information includes at least color temperature control information for controlling a color temperature of the display unit, and the control information changing unit performs the color temperature control information based on the change information. Is changed.
[0016]
With this configuration, when performing a correction operation for correcting color temperature unevenness of an image displayed on a screen formed by a plurality of display units, the image of the display unit to be corrected, the color temperature control information of the display unit to be corrected, and Can be changed on a single screen while changing the color temperature control information.
[0017]
Further, in the video display device of the present invention, the control information includes at least white balance control information for controlling a white balance of the display unit, and the control information changing unit performs the white balance control information based on the change information. Is changed.
[0018]
With this configuration, when performing a correction operation for correcting the white balance of the image displayed on the screen formed by the plurality of display units 4, the image of the display unit to be corrected, the white balance control information of the display unit to be corrected, and Can be changed on a single screen while changing the white balance control information.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
1 and 2 show block diagrams of a video display device according to an embodiment of the present invention.
[0021]
As shown in FIG. 1, the video display device 100 of the present invention forms a remote terminal 124 having an operation panel, a video display unit 123 that displays video on a screen formed by a plurality of display units 131, and a screen. A signal distributor 122 that distributes video data signals to a plurality of display units 131, respectively, and a controller 121 that controls the signal distributor 122 are provided.
[0022]
The controller 121 adjusts an analog-to-digital converter (hereinafter, simply referred to as an AD converter) 111 that converts an analog video signal into a digital video signal, and adjusts brightness, color, and the like of a video displayed on a screen of the video display unit 123. Image adjustment unit 112, character generation unit 113 that generates a character of control information displayed on the screen of image display unit 123, and display position setting that sets the display position of control information displayed on the screen of image display unit 123 The image processing apparatus includes a unit 114, a synthesizing unit 115 for synthesizing control information and an image displayed at a display position, a signal transmitting unit 116 for transmitting an image data signal to an image display unit 123, and a CPU 117.
[0023]
As shown in FIG. 2, the image display unit 123 includes an image display unit 110 that displays a preset test pattern image on a screen formed by the plurality of display units 131, and control information of the plurality of display units 131. A plurality of control information storage means 130 to store the information and a plurality of display control means 120 respectively controlling the plurality of display units 131 based on the control information stored in the plurality of control information storage means 130 are provided.
[0024]
The CPU 117 includes: a video data signal generation unit 140 that generates a video data signal of a preset test pattern video; a display unit selection unit 150 that selects one display unit 131 from a plurality of display units 131 that form a screen; Control information changing means 170 for changing the control information based on the change information for changing the control information of the selected display unit 131.
[0025]
A control information synthesizing unit 160 for synthesizing a cursor indicating the display unit 131 selected by the display unit selecting unit 150 and control information with a preset test pattern image includes a display position setting unit 114 and a character generation unit 113. And a synthesizing unit 115.
[0026]
The screen formed by the plurality of display units 131 is divided into a plurality of groups in advance, and the control information synthesizing unit 160 displays the first group including the display unit 131 selected by the display unit selecting unit 150 and the control information. It is determined whether or not the first group and the second group match, and when it is determined that the first group and the second group match, the position where the control information is displayed is changed to a set position. ing.
[0027]
The control information includes at least one of the luminance or color temperature of the display unit 131 and control information for controlling one of the white balance, and the control information changing unit 170 changes the control target based on the change information. Has become.
[0028]
The video data signal generating means 140 acquires selection information for selecting one plane video from at least four types of plane video of white, red, green, and blue as a preset test pattern video to be displayed on the screen. Then, a video data signal for displaying a plane video on a screen based on the selection information is generated.
[0029]
The operation of the video display device according to the embodiment of the present invention will be described with reference to FIG. 3 for the video display device configured as described above.
[0030]
First, the video data signal generator 140 generates a video data signal of a preset test pattern video. That is, as a preset test pattern image to be displayed on a screen formed by the plurality of display units 131, selection of selecting one plane image from at least four types of plane images of white, red, green, and blue. A video data signal of a plane video is generated based on the information. (Step S210). Next, a video data signal is acquired for each of the display units 131, and the plurality of display units 131 display the test pattern video on the screen based on the control information stored in the control information storage unit 130. Each is controlled by the control means 120 (step S220). Next, the video display means 110 displays a preset test pattern video on a screen formed by the plurality of display units 131 (step S230). Next, one display unit 131 is selected from the plurality of display units 131 by the display unit selection means 150 (step S240). Next, control information of the selected display unit 131 is obtained (Step S250). Next, the control information combining means 160 combines the control information with the cursor indicating the display unit 131 selected on the preset test pattern image.
[0031]
At this time, the control information synthesizing unit 160 determines whether the group including the display unit 131 selected by the display unit selecting unit 150 matches the group in which the control information is displayed, and determines that the groups match. At this time, the position at which the control information is displayed is changed to a preset position and then synthesized (step S260). FIG. 4 shows an example of an image in a state in which one display unit 131 selected by the display unit selection means 150 and control information are displayed on a screen formed by a plurality of display units 131 of the image display unit 123. I have.
[0032]
Further, it is assumed that the screen formed by the plurality of display units 131 is divided into upper and lower groups, and, for example, control information is displayed in advance in a lower group on the screen. In this state, if the cursor is moved to the lower group of the screen, the position of the display unit 131 selected by the display unit selecting unit 150 and the position where the control information is displayed overlap, so as shown in FIG. The position at which the control information is displayed is changed to the upper position on the screen.
[0033]
Next, change information for changing the control information displayed on the screen formed by the plurality of display units 131 is obtained (step S270). Next, the control information is changed by the control information changing means 170 based on the obtained change information (step S280). Here, when the change information for changing the brightness control information is obtained, the brightness control information is changed based on the change information, and the brightness unevenness of the selected display unit 131 is corrected. When change information for changing the color temperature control information is acquired, the color temperature control information is changed based on the change information, and the chromaticity unevenness of the selected display unit 131 is corrected. When change information for changing the white balance control information is acquired, the white balance control information is changed based on the change information, and the white balance of the selected display unit 131 is corrected. Next, the changed control information is stored in the control information storage unit 130 (Step S290).
[0034]
In this way, the control value is displayed on the display screen by combining the test pattern video signal with the cursor indicating the display unit to be adjusted and the control value of the display unit to be adjusted. Therefore, the correction work can be performed while checking only the display screen.
[0035]
As described above, the image display device 100 according to the embodiment of the present invention includes a cursor and control information indicating that the controller 121 is the display unit 131 selected by the display unit selection unit 150 on the preset test pattern image. And a control information changing unit 170 for changing the control information based on the change information for changing the control information of the selected display unit 131. When performing correction work to correct unevenness in brightness or chromaticity of the image displayed on the screen formed by the display unit, the image of the display unit to be corrected and the control information of the display unit to be corrected are displayed on one screen. The correction work can be facilitated by correcting the luminance unevenness and the chromaticity unevenness while checking.
[0036]
【The invention's effect】
As described above, according to the present invention, when an operator performs a correction operation for correcting luminance unevenness and chromaticity unevenness of an image displayed on a screen formed by a plurality of display units, an image of a display unit to be corrected is displayed. To provide a video display device having an effect that correction work can be facilitated by correcting brightness unevenness and chromaticity unevenness while confirming control information of a display unit to be corrected on a single screen. Can be done.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a video display device according to an embodiment of the present invention; FIG. 2 is a block diagram showing a video display device according to an embodiment of the present invention; FIG. 3 is a video display device according to an embodiment of the present invention; FIG. 4 is a flowchart showing the processing procedure of FIG. 4. FIG. 4 is a diagram showing a state in which the selected display unit and control information are displayed on the screen of the video display device according to the embodiment of the present invention. FIG. 6 is a diagram showing a state in which a selected display unit and control information are displayed on a screen of a video display device of FIG. 6. FIG. 6 is a block diagram of a conventional video display device.
111 AD conversion unit 112 Video adjustment unit 113 Character generation unit 114 Display position setting unit 115 Synthesis unit 116 Signal transmission unit 117 CPU
121 controller 122 signal distributor 123 video display unit 124 remote terminal 131 display unit 100 video display device 110 video display means 120 display control means 130 control information storage means 140 video data signal generation means 150 display unit selection means 160 control information synthesis means 170 Control information change means

Claims (5)

Video data signal generating means for generating a video data signal of a predetermined test pattern video; video display means for displaying the predetermined test pattern video on a screen formed by a plurality of display units; and A plurality of control information storage means for respectively storing control information of the display unit, and a plurality of display control means for respectively controlling the plurality of display units based on the control information stored in the plurality of control information storage means, A display unit selecting means for selecting one display unit from the plurality of display units; a cursor indicating the display unit selected by the display unit selecting means on the preset test pattern image; and the control information. Control information synthesizing means for synthesizing the control information and the control information of the selected display unit. Further comprising a control information changing means for changing the control information based on the changed information to the image display device according to claim. The screen is divided into a plurality of groups, and the control information synthesizing unit determines whether a first group including the selected display unit matches a second group in which the control information is displayed. The video display device according to claim 1, wherein when it is determined that the first group and the second group match, the position at which the control information is displayed is changed to a set position. 2. The control information according to claim 1, wherein the control information includes at least brightness control information for controlling brightness of the display unit, and the control information changing unit changes the brightness control information based on the change information. Video display device. The control information includes at least color temperature control information for controlling a color temperature of the display unit, and the control information changing unit changes the color temperature control information based on the change information. 2. The video display device according to 1. The control information includes at least white balance control information for controlling a white balance of the display unit, and the control information changing unit changes the white balance control information based on the change information. 2. The video display device according to 1.

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