KR20090040823A - Image display with image processing board for multi vision apparatus - Google Patents

Image display with image processing board for multi vision apparatus Download PDF

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Publication number
KR20090040823A
KR20090040823A KR1020070121689A KR20070121689A KR20090040823A KR 20090040823 A KR20090040823 A KR 20090040823A KR 1020070121689 A KR1020070121689 A KR 1020070121689A KR 20070121689 A KR20070121689 A KR 20070121689A KR 20090040823 A KR20090040823 A KR 20090040823A
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South Korea
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image
unit
output
signal
display device
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KR1020070121689A
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Korean (ko)
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정유경
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정유경
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
    • 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

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

An apparatus for outputting/displaying multiple divided images by using a built-in image processing board is provided to enable each display device within the apparatus to independently process an image signal. According to an image processing signal inputted from a central control part through a communication unit(110), a board controller(120) controls the operation of the first display device(100). The board controller collects the status information of the first display device and then transmits it to the central control part through the communication unit. A video input part(130) receives a video signal having output video signal information, and converts/outputs it based on the signal processing object video signal method of the first display device. An image processing unit(140) receives the video signal outputted from the video input part, and then processes a video signal for extracting only image areas to be outputted according to a video signal processing control command inputted from the board controller.

Description

Display unit for multi-segment image output with built-in image processing board {IMAGE DISPLAY WITH IMAGE PROCESSING BOARD FOR MULTI VISION APPARATUS}

The present invention relates to a display device for outputting a multi-segment image embedded in an image processing board for outputting a single image to a plurality of display devices arranged in a grid to realize a large screen.

In general, a multi-segment image output device is a multi-segment image output device arranged to display a plurality of independent display devices to display a different image or the same image partly on each display device, or display the image in a puzzle form, integrated into the full screen It is a video display device that is installed on a wall or placed on the ground.

As described above, the multi-segment image output device of the prior art generally uses a thin liquid crystal display (LCD) as a display device. The LCD multiplexed image output device includes a plurality of LCDs that are vertically and horizontally coupled to each other to display a large image image by projecting a partial image image of the entire image onto each screen area.

The multi-segment image output device having the above-described configuration is used as a video and lyrics subtitle output device in places such as karaoke, and is used for advertisement purposes by being installed in exhibition halls, predetermined event halls, building exterior walls, and the like. In recent years, the size of a multi-segment image display device has been enlarged for greater advertising effect.

The multi-segment image output device is operated by a central processor to generate and output each LCD output image, and each LCD outputs a designated segmented image image of the entire image to output a single image image.

Therefore, in order to achieve large size, the conventional multi-segment image output device needs to be replaced with one having a high performance so that the central processing unit is suitable for image processing of an image signal whose data amount increases as the screen is enlarged. Since additional cables are required depending on the number of additional LCDs to transmit the video signal to the LCD, the cost of installing and improving the performance is excessive.

In addition, the conventional multi-segmentation video output device is fixedly set so that each video cable receives a video signal for a unique partition area, so that a predetermined cable must be correctly connected to a specific LCD. Because of the need to pay attention to the installation work or management to improve the performance has a problem.

Accordingly, the present invention is to solve the above-mentioned problems of the prior art, when the need for large-sized multi-segment video output device installed by performing the processing of the video signal independently in each display device constituting the multi-segment video output device It is an object of the present invention to provide a display device for outputting a multi-segment image with a built-in image processing board which enables the enlargement without changing the processor performing the image processing.

In addition, an object of the present invention is to provide a display device for a multi-segment image output embedded in an image processing board to facilitate the setting of the cable and the expansion of the display device when installing and managing the multi-segment image output device.

According to an aspect of the present invention, there is provided a display apparatus for outputting a multi-part image embedded in an image processing board, comprising: a communication unit configured to communicate with a central control unit of a central management room; A board controller for controlling output image signal processing according to an image processing signal input from a central controller through the communication unit; A video input unit which receives an external input video signal and converts the video signal into a signal processing target video signal; An image processing unit for extracting and outputting an output target image area according to a control command of the board control unit from the image signal input from the image input unit; An image compensator configured to adjust the image signal extracted from the image processing unit to the size of the display unit and to perform correction and output the image signal; And a video output unit for decoding the video signal output from the video correction unit according to the output method of the display unit, converting the video signal into an analog or digital signal, and outputting the analog signal to the display unit.

The image input unit receives and copies an external image signal, receives one signal, performs image signal processing, and outputs the image signal to the image processing unit, and the other signal is a 1: 2 image of another adjacent display device. It is characterized by including a 1: 2 distributor to output to the distributor.

The image input unit may further include an n: 1 switching unit configured to receive a plurality of n image signals and then select and input a preset image signal.

It is apparent that the display apparatus for outputting a multi-part image having a built-in image processing board having the above-described configuration further includes a display unit at an output terminal of the image output unit.

The communication unit, the board control unit, the image input unit, the image processing unit, the image correction unit, and the image output unit may be implemented as a programmable microprocessor.

The communication unit, the image input unit, the image processing unit, the image compensator, the image output unit, and the display unit may be configured to output status information to the board controller.

The board controller is configured to collect the state monitoring information for each configuration in each board and to transmit to the central controller.

The display device for multi-segment image output embedded in the image processing board of the present invention having the above-described configuration is disposed on a grid of a matrix to form a multi-segment image output device, and each display device independently processes an image signal to output an image. It is possible to eliminate the use of a high performance central processing unit for processing the entire output video signal of the device.

Therefore, the present invention provides an effect of easily increasing the size of a multi-segment image output device by simply arranging the display device in a grid without additionally upgrading the central processing unit for separate image processing.

The present invention described above provides the effect of facilitating installation and management by enabling the multi-division imaging apparatus to be installed and expanded by a simple grid arrangement of the display apparatus.

In addition, the present invention enables to independently perform image processing on each display device, so that when the screen is enlarged, there is no need to add a processor suitable for a large screen or upgrade to a high-performance one, thereby significantly reducing installation cost, management cost, and expansion cost. It provides the effect of saving.

In addition, the present invention can perform the status monitoring by screen by allowing each display device to centrally check the status monitoring of the multi-segmentation video display device by transmitting the status information of the display device to the central controller through a control cable. By doing so, it provides the effect of significantly solving the problem in case of failure.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing preferred embodiments of the present invention.

1 is a block diagram illustrating a display device for outputting a multi-part image embedded in an image processing board according to an exemplary embodiment of the present invention.

As shown in FIG. 1, a display device 100 (hereinafter, referred to as a 'first display device 100') for outputting a multi-segmented image according to an embodiment of the present invention includes a central control unit (not shown) of the central management room. Controls the driving of the first display device 100 according to an image processing signal inputted from the central controller through the communication unit 110 and the communication unit 110 to perform communication and collects state information of the first display device 100. Receiving a video signal having a board control unit 120 and an output image signal information through the communication unit 110 and converting the signal to a signal processing target image signal method of the first display device 100 An image processing unit 140 for extracting and outputting an output target image area according to a control command of the board controller 120 from an image input unit 130 and an image signal input from the image input unit 130, and the image processing unit ( Extracted from 140) Image compensator 150 for adjusting the image signal according to the size of the display unit 170 and performing correction, and decoding the image signal output from the image compensator 150 according to the output method of the display unit 170. And an image output unit 160 for converting an analog or digital signal and outputting the image signal to the display unit 170, and a display unit 170 for displaying the image signal output from the image output unit 160 on the screen. do.

The operation of each configuration of the above-described first display device 100 will be described in more detail as follows.

In the above-described configuration, the communication unit 110 is configured to perform communication between the central control unit of the central controller installed in the management room and the board control unit 120 of the first display device 100, RS-485, RS- It may be configured to use a wired communication protocol such as 422, RS232, Ethernet, or may be configured to use wireless communication such as Bluetooth, CDMA.

In addition, the board controller 120 stores the identification ID transmitted from the central controller through the communication unit 110 so that the first display apparatus 100 can be distinguished from other display apparatuses, and the output is input from the central controller. The first display device may be configured to output an image through the display unit 170 such that the image processing unit 140 extracts an output target image region to be output from the display unit 170 using the target image region information. 100). And, by collecting the state information of each configuration of the first display device 100 and transmits to the central control unit through the communication unit 110, the administrator of the central management center outputs a multi-segment image consisting of a set of the first display device 100 Allows you to control and monitor the status of the device.

Next, the image input unit 130 receives an analog or digital image signal to be output through a multiplexed image output device (see FIGS. 2, 4, and 7), and then decodes the image signal. The digital encoding process is performed on the output image signal suitable for the display unit 170 such as RGB or YUV.

The image processing unit 140 receives a digitally encoded image signal from the image input unit 130 and then processes the image signal extracting only an image region to be output according to an image signal processing control command input from the board controller 120. To print it.

Thereafter, the image correction unit 150 enlarges the output target image signal of the first display apparatus 100 extracted and output from the image processing unit 140 to match the size of the display unit 170 and corrects the image. Run it and print it out.

The image corrector 150 decodes an image signal output from the image corrector 150 according to an output method of the display unit 170, converts the image signal into an analog or digital signal, and outputs the analog signal to the display unit 170.

The display unit 170 is implemented in the form of an LCD panel to display an image signal of the image output unit 160 on the screen.

The communication unit 110, the board controller 120, the image input unit 130, the image processing unit 140, the image compensator 150, and the image output unit 160 are programmed in the above-described configuration of the first display device 100. The microprocessor may be implemented in the form of a possible microprocessor to easily upgrade and change data, and may be implemented to monitor and control a state of each component in each board.

The first display device 100 having the above-described configuration is configured to independently perform image processing, and thus, the multi display device 50 (hereinafter, referred to as a first image output device 50) may be used. If implemented, it does not require a central processor for controlling the image output of the first display device (100).

In addition, the first display apparatus 100 of FIG. 1 may be arranged in various forms (2x2, 1x3, 1x4, 3x3, 4x4, ... n x m) without changing hardware to implement a multi-segment image output apparatus. Each board is controlled to show different split images by changing a board identifier ID for indicating a split image to be processed by each board.

FIG. 2 is a block diagram of a multi-division first image output device 50 implemented using the display device of FIG. 1.

The first display device 100 having the configuration of FIG. 1 is configured to have an identifier ID assigned from the central control unit, and each of the first display devices 100 arranged in a grid shape as shown in FIG. 2. The video splitter 200 for supplying a video signal to the first display device 100 is connected to the video cable 210 and, if necessary, by the communication cable 300 and arranged in a grid.

In FIG. 2, the first display device 100 is arranged to have m rows and n columns, and 100 (1-1) representing the display device represents the first display device 100 arranged in one row and one column. The device mn represents a display device located in m rows and n columns. In addition, the communication unit 110 of each first display device 100 is communicatively connected to the central control unit, and each image input unit 130 of the first display device 100 has a bus type for transmitting an image signal. It is connected to the video signal cable 210 and receives the output target video signal to perform a digital conversion process for the video signal suitable for the signal processing of the first display device 100, the image processing unit 140 is an identifier from the video The image region specified by ID is extracted, and the image compensator 150 adjusts and outputs the extracted image region to fit the size of the display unit 170, and the image output unit 160 displays the corresponding image signal. When the device 170 converts the output image signal to the display unit 170, the display unit 170 visually outputs the image signal on the screen.

As described above, when each first display device 100 performs a signal processing on an image area to be output from an image signal according to a control command of the central controller, the entire first image output device 50 is centered. The video screen set by the controller is output. That is, the image signal processing is performed only on the first display device 100, and the central controller controls only the region information on the output target image and the identifier (ID) information of each display device 100, and performs the image signal processing. It doesn't have to be high performance because it doesn't do it.

Therefore, the first image output apparatus 50 is configured to process the image signals independently in each of the first display apparatuses 100 without having a high-performance central processing unit for controlling the entire image signal output. Even when multiple screens are enlarged, the load for image processing is minimized.

FIG. 3 is a block diagram of a display device (hereinafter, referred to as a 'second display device 100a') having an integrated image processing board having a 1: 2 image divider according to another embodiment of the present invention.

 As shown in FIG. 3, the display device of the present invention makes it easy to connect the video cable, and each of the second display devices 100a is configured to reduce the wiring length of the video signal cable 210. It is configured to contain two distributors 101. That is, the second display device 100a of FIG. 3 includes the communication unit 110, the board control unit 120, the 1: 2 divider 101, the image input unit 130, the image processing unit 140, and the image correction unit 150. , The image output unit 160 and the display unit 170.

The 1: 2 image divider 101 directly receives an image signal at the front end of the image input unit 130 and copies the image signal to output the image signal to the image input unit 130 of the second display device 100a. The video signal is configured to be output to the adjacent second display device 100a. In FIG. 3, the 1: 2 divider 101 is illustrated as being separately configured, but may be integrated with the image fitting unit 130 by the internal configuration of the image input unit 130.

The communication unit 110, the board control unit 120, the image input unit 130, the image processing unit 140, the image correction unit 150, the image output unit 160, and the display unit 170 of the above-described configuration are shown in FIG. 1. Since it is the same as the structure of the 1st display apparatus 100, the detailed description is abbreviate | omitted.

That is, the second display device 100a of FIG. 3 is arranged in a grid so that each second display device 100a can transmit an image signal to an adjacent second display device 100a, and thus outputs the multi-segmented video of FIG. 4. The device 50a (hereinafter referred to as 'second image output device 50a') is formed.

FIG. 4 is a block diagram illustrating a multi-partition image output device implemented using the display device of FIG. 3.

As shown in FIG. 4, the second image output apparatus 50a of FIG. 4 is disposed in a grid in which the central controller and the communication unit 110 of each second display apparatus 100a are connected in the same manner as in FIG. 1. do. At this time, each display device is displayed as 100a (1-1), ...., 100a (m-n) according to the arrangement position is as shown in FIG. Among them, the 1; 2 video divider 101 of the display device of 100a (1-1) receives and copies the video signal 1 directly, and outputs one video signal to the video input unit 130 therein. One copied video signal is directly connected to an adjacent display device of 100a (1-2) and then connected in the same manner from 100a (2-1) to 100a (mn) display device. That is, each display device can exclude the configuration of the image splitter 200 by connecting the image cables 210A in a chain manner by the 1: 2 image splitter 101, and can reduce the length of the image signal cable. do.

Since the following video signal processing is processed in the same manner as in FIG. 1, a detailed description thereof will be omitted.

As shown in FIG. 5, each of the first and second display devices 100 and 100a of the image output devices 50 and 50a configured as shown in FIGS. 2 and 4 may display the display screen 10 of the multi-division video output device. Image signal processing for a screen corresponding to each divided area (hereinafter, referred to as 'display screen 10') (hereinafter, referred to as 'display screen 10') and then outputting to the display unit 170. As a result, the entire image output on the display screen 10 is generated.

FIG. 6 is a block diagram of a display device 100b (hereinafter referred to as 'third display device 100b') for multi-segment image output including an n; 1 switching unit 102 according to another embodiment of the present invention. to be.

As shown in FIG. 6, the third display device 100b according to another exemplary embodiment of the present invention has an n: 1 switching unit instead of the 1: 2 image divider 101 unlike the second display device 100a of FIG. 3. And a multi-segmented video output device 50b (hereinafter referred to as a 'third video output device 50b') configured to output a screen image using a plurality of video signals. do.

The n: 1 switching unit 102 of FIG. 6 is configured to select only one image signal designated by the board controller 120 and output the n image signals to the image input unit 130. That is, the third display device 100b of FIG. 6 selects a designated video signal from among a plurality of input n video signals, extracts a display target region of the display unit 170 from the selected video signals, and displays the display unit 170. Is configured to output).

Although the n: 1 switching unit 102 is illustrated as an independent configuration in the description of the above-described configuration and in FIG. 6, the n: 1 switching unit 102 may be integrally formed with the image input unit 130.

The communication unit 110, the board control unit 120, the image input unit 130, the image processing unit 140, the image correction unit 150, the image output unit 160, and the display unit 170 of the above-described configuration are shown in FIG. 1. Since it is the same as the structure of the 1st display apparatus 100, the detailed description is abbreviate | omitted.

FIG. 7 is a block diagram illustrating a third image output device 50b ′ implemented using the third display device 100b of FIG. 6.

As shown in FIG. 7, in the third display device 100b of FIG. 6 having the above-described configuration, each third display device 100b is configured such that each n: 1 switching unit 102 receives n video signals. The video cable 210B providing n video signals to be input is connected, and the communication cable 300 is connected in the same manner as in FIGS. 2 and 4 so that the third display devices 100b are arranged in a mn lattice arrangement. By forming the third image output device 50b. In FIG. 6, 100a (m-n) representing each display device represents a display device positioned in m rows and n columns, as described with reference to FIGS. 2 and 4.

Each third display device 100b of the third image output device 50b configured as described above has an identifier (ID) assigned by the n: 1 switching unit 102 to its third display device 100b. After selecting only the video signal corresponding to the output to the image input unit 130, and performs the image signal processing in the same manner as shown in Figs. Output the video.

FIG. 8 is a diagram illustrating an image output state of various methods by the third image output device 50b of FIG. 7.

As illustrated in FIG. 8, the third image output apparatus 50b of FIG. 7 integrates a plurality of image signals by allowing each third display apparatus 100b to selectively receive and output an image signal. Be able to express.

The first to third display devices 100, 100a, and 100b of the present invention having the above-described configuration may be arranged in the form of one row and N columns so as to output a long image in a horizontal direction such as a panorama.

FIG. 9 illustrates an embodiment of a fourth image output apparatus 50c configured by using the first display apparatus 100 for outputting a panoramic image, FIG. 10 shows a panoramic image screen to be output, and FIG. 11 shows a fourth image. An image frame transmitted to the image output device 50c is shown.

In the fourth image output device 50c of FIG. 9, each first display device is displayed as 100 (1-1), 100 (1-2),..., 100 (1 -N). Each display device is connected to the central control unit through the communication cable 300 as shown in FIG. 2, and is connected by an image cable 210 to receive an image signal from the image distributor 200. In this case, the second display device 100a is arranged in the same manner as in FIG. 4, but is connected to have only one row and n columns, and in the case of the third display device 100b, the first display device 100b has one row and n columns. Connection is configured in a manner.

A transmission method of a panoramic image to be output through the fourth image output apparatus 50c having the above-described configuration will be described below. First, if the original image to be output through the fourth image output device 50c is the image of FIG. 10, the image of FIG. 10 is displayed on the display device of the fourth image output device 50c in order to be transmitted to the fourth image output device 50c. It is divided into n so as to correspond to the number of.

Thereafter, each divided image is numbered 1 to n as shown in FIG. 11, and is divided into one image frame to be transmitted and transmitted as an image signal.

Each display device of the fourth image output device 50c that receives the divided video signal as shown in FIG. 11 extracts the video signal corresponding to the number of the image transmitted from the central controller and outputs the image signal to each display device. Enables output of expression images.

In addition, the fourth image output device 50c of FIG. 9 is controlled to perform a text advertisement, which is moved by outputting the images sequentially from the 100 (1-1) display device to the (1001-n) display device. The image output can be controlled in various ways.

Optimum embodiments have been disclosed in the drawings and specification of the present invention. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a block diagram of a display device for outputting an image processing board embedded multi-segment image according to an embodiment of the present invention;

FIG. 2 is a block diagram illustrating a multi-partition image output device implemented using the display device of FIG. 1.

3 is a block diagram of a display device for outputting a multi-segmented image having a built-in image processing board according to still another embodiment of the present invention;

4 is a block diagram illustrating a multi-segment image output device implemented using the display device of FIG. 3.

5 is a diagram illustrating a screen output state in the multi-segment image output apparatus of FIGS. 3 and 4;

6 is a block diagram of a display device for outputting a multi-segment image having an n: 1 switching unit according to still another embodiment of the present invention;

FIG. 7 is a block diagram illustrating a multi-segment image output device implemented using the display device of FIG. 6.

FIG. 8 is a diagram illustrating image output states of various methods by the multi-segmented image output device of FIG. 7;

9 is a view showing an embodiment of a fourth image output apparatus 50c configured by using the first display apparatus 100 for outputting a panoramic image.

10 is a view showing a panoramic video screen to be output;

11 is a diagram illustrating an image frame transmitted to the fourth image output apparatus 50c.

Description of the main symbols in the drawings

1: Image source

10: display screen of the multi-segment video output device

50, 50a, 50b: multi-segment video output device

100, 100a, 100b: multi segment video display

101: 1: 2 video divider 102: n: 1 switching unit

110: communication unit 120: board control unit

130: image input unit 140: image processing unit

150: video correction unit 160: video output unit

170: display unit

200: video distributor 210: video signal cable

300: control cable

Claims (7)

A communication unit for communicating with a central control unit of the central management room; A board controller for controlling output image signal processing according to an image processing signal input from a central controller through the communication unit; A video input unit which receives an external input video signal and converts the video signal into a signal processing target video signal; An image processing unit for extracting and outputting an output target image area according to a control command of the board control unit from the image signal input from the image input unit; An image compensator configured to adjust the image signal extracted from the image processing unit to a size of a display unit, perform correction, and output the image signal; A video output unit which decodes the video signal output from the video correction unit according to the output method of the display unit, converts the video signal into an analog or digital signal, and outputs the analog signal to the display unit; And a display device for outputting a multi-segment image embedded in an image processing board. The display apparatus of claim 1, wherein the image input unit receives and copies an external image signal, receives one signal, performs image signal processing, and outputs the image signal to the image processing unit. And a 1: 2 divider for outputting the 1: 2 image divider. The multi-split image embedded in the image processing board of claim 1, wherein the image input unit further comprises an n: 1 switching unit configured to select and input a predetermined image signal after receiving n number of image signals. Display for output. The display apparatus according to claim 1, wherein the communication unit, the board control unit, the image input unit, the image processing unit, the image correction unit, and the image output unit are implemented as a programmable microprocessor. The display apparatus according to claim 1, wherein the communication unit, the image input unit, the image processing unit, the image correction unit, and the image output unit are configured to output state information to the board control unit. The image processing board built-in multi-segmented image output of claim 5, wherein the board controller is configured to transmit the state information of the communication unit, the image input unit, the image processing unit, the image correction unit, and the image output unit to the central control unit of the central management center. Display. The display device for an embedded image processing board according to any one of claims 1 to 6, wherein the display device for outputting an embedded image processing board is configured to output a panoramic image arranged in one row and n columns. .
KR1020070121689A 2007-10-22 2007-11-27 Image display with image processing board for multi vision apparatus KR20090040823A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020112678A (en) * 2019-01-11 2020-07-27 シャープ株式会社 Video output device, display system, and video output method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020112678A (en) * 2019-01-11 2020-07-27 シャープ株式会社 Video output device, display system, and video output method

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