KR102397438B1 - Display apparatus and Method for controlling the display apparatus thereof - Google Patents

Abstract

The present invention provides a display device and a method for controlling the same. The display device determines the resolution of the image content received through the image input unit and the image input unit communicating with an external device, and transmits the received image content to another display device based on the determined resolution. , determines a processing mode for transmitting the received image content to another display device, and inputs an image to transmit the image content processed according to the determined processing mode to another display device based on the determined bandwidth It includes a processor that controls the department.

Description

Display apparatus and method for controlling the same

The present invention relates to a display device and a method for controlling the same, and more particularly, in a display system such as a video wall composed of a plurality of display devices, the display device minimizes signal loss of image content input from an external device. The present invention relates to a display device for rapidly transmitting data to another display device and a method for controlling the same.

A recent display device includes a high-resolution LFD (Large Format Display) such as a plurality of Full-High Definition (FHD) resolutions or Ultra-High Definition (UHD) resolutions for use in hospitals, corporate reception places, or large-screen advertisements. The use of display systems such as videowalls is increasing.

In LFD, a video wall can be assembled in various shapes using multiple panels to create a visual effect in which various media move as one. The video wall is installed in a matrix of a plurality of digital displays so that one large image or a plurality of images can be displayed. In this case, the display device receives high-resolution image content such as FHD and UHD from an external source device and transmits the high-resolution image content to a plurality of other display devices at high speed. When an image is transmitted at a high speed, a malfunction of the display apparatus such as distortion of an image displayed on the screen may occur due to signal loss of image content transmitted from the display apparatus to another display apparatus.

Conventionally, when implementing an LFD video wall (Large Format Display Videowall) for displaying high-resolution (FHD and UHD) image content, a display interface such as DP1.2 (Display Port 1.2) is used. DP1.2 prevents malfunction of the display device due to signal loss occurring in the process of transmitting image content from an external source device to a display device or from a display device to another display device.

However, when the resolution input to the display device is UHD, the display device implemented with DP1.2 recognizes the input UHD resolution as four divided FHD data types. Accordingly, the display device implemented with DP1.2 has a problem in that it cannot recognize UHD original data when receiving UHD image content from an external source device.

In addition, the display device reduces the bandwidth in the process of recognizing the input UHD video content in FHD format (reduced bandwidth). At this time, in order to transmit the processed 　UHD image content from the display device to another display device, a high bit rate applicable to UHD was manually input.

Therefore, according to the present invention, when the display device recognizes the original data of the input high-resolution (UHD) image and configures a videowall that transmits it to another display device, the signal loss of the UHD original data input to the display device loss) and provide an implementation method for quickly transmitting to another display device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a display apparatus and a method for controlling the same in which the display apparatus minimizes signal loss of high-resolution image content received from an external apparatus and transmits it to another display apparatus quickly.

In order to achieve the above object, according to an embodiment of the present invention, there is provided a display control method of a plurality of display devices, the method comprising: receiving high-resolution image content from the outside; determining the resolution of the received video content; determining a bandwidth for transmitting the received image content to another display device based on the determined resolution, and determining a processing mode for transmitting the received image content to the other display device; and transmitting the image content processed according to the determined processing mode to the other display device based on the determined bandwidth.

In addition, an image processing step of processing the received image content; The method may further include displaying at least a portion of the processed image content, wherein the processing mode is a bypass of passing through the received image content to the other display device without parsing it. mode and a repackaging mode in which the processed image content is restored and transmitted to the other display device.

In addition, the determining may include determining one of the bypass mode and the repackaging mode based on an arrangement order of the display device.

Here, the repackaging mode may operate regularly in a preset arrangement order of the display device and the other display device.

The method may further include determining a signal loss rate of the processed image content, wherein the determining of the processing mode may include determining one of the bypass mode and the repackaging mode according to the determined signal loss rate. there is.

The determining of the processing mode may include determining the repackaging mode when the signal loss rate is equal to or greater than a preset value, and determining the bypass mode when the signal loss rate is less than a preset value.

In addition, the determining of the bandwidth may include determining the bandwidth as a first bit rate (High Bit Rate1, HBR1) when the resolution of the received video content is a first resolution, and When the resolution of the video content is the second resolution, the bandwidth may be determined as the second bit rate (High Bit Rate2, HBR2).

In addition, the receiving may include receiving the processed image content through a display interface for transmission to another display device, and the display interface may include a receiving (Rx) terminal and a transmitting (Tx) terminal.

The display device and the other display device may be included in a video wall that displays the processed image content.

On the other hand, in order to achieve the above object, according to an embodiment of the present invention, a display apparatus includes: an image input unit for communicating with an external device; and determining the resolution of the high-resolution image content received through the image input unit, and determining a bandwidth for transmitting the received image content to another display device based on the determined resolution, and the received image content A processor that determines a processing mode for transmitting , to the other display device, and controls the image input unit to transmit image content processed according to the determined processing mode to the other display device based on the determined bandwidth includes ;

In addition, the image processing unit for processing the received image content; A display unit configured to display at least a portion of the processed image content, wherein the processing mode is a bypass mode in which the received image content is passed through to the other display device without parsing it and a display device including a repackaging mode in which the processed image content is reconstructed and transmitted to the other display device.

In addition, the processor may determine one of the bypass mode and the repackaging mode based on an arrangement order of the display device.

Also, the repackaging mode may periodically operate in a preset arrangement order of the display device and the other display device.

The processor may determine a signal loss rate of the received image content, and determine one of the bypass mode and the repackaging mode according to the determined signal loss rate.

Also, when the signal loss rate is equal to or greater than a preset value, the processor may determine the repackaging mode, and when the signal loss rate is less than a preset value, the processor may determine the bypass mode.

And, when the resolution of the received image content is the first resolution, the processor determines the bandwidth as a first bit rate (High Bit Rate1, HBR1), and the resolution of the received image content is the second resolution. In the case of 2 resolution, the bandwidth may be determined as a second bit rate (High Bit Rate2, HBR2).

In addition, the image input unit may include a display interface for transmitting the processed image content to another display device, and the display interface may include a reception (Rx) terminal and a transmission (Tx) terminal.

In addition, the display device and the other display device may be included in a video wall that displays the processed image content.

According to various embodiments of the present invention as described above, the display device included in the video wall can minimize signal loss of image content received from the external device and transmit it to another display device at high speed.

1 is a view showing a display system according to an embodiment of the present invention;
2 is a block diagram schematically illustrating the configuration of a display device according to an embodiment of the present invention;
3 is a block diagram showing in detail the configuration of a display device according to an embodiment of the present invention;
4A to 4B are views for explaining a method of determining a bandwidth according to an input resolution, according to an embodiment of the present invention;
5A to 5B are diagrams for explaining a method of processing image content according to an input resolution, according to an embodiment of the present invention;
6 is a flowchart for explaining a method of operating a processor of a display apparatus, according to an embodiment of the present invention;
7 is a sequence diagram illustrating a method of controlling a display system according to an embodiment of the present invention.

The present embodiments can apply various transformations and can have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the scope of the specific embodiments, and it should be understood to include all transformations, equivalents and substitutions included in the spirit and scope of the disclosure. In describing the embodiments, if it is determined that a detailed description of a related known technology may obscure the subject matter, the detailed description thereof will be omitted.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terms used in the present application are used only to describe specific embodiments, and are not intended to limit the scope of rights. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this application, it is understood that terms such as "comprises" or "consisting of" do not preclude in advance the possibility of the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. should be

In an embodiment, a 'module' or 'unit' performs at least one function or operation, and may be implemented as hardware or software, or a combination of hardware and software. In addition, a plurality of 'modules' or a plurality of 'units' are integrated into at least one module and implemented with at least one processor (not shown) except for 'modules' or 'units' that need to be implemented with specific hardware. can be

Hereinafter, the present invention will be described in more detail with reference to the drawings. 1 is a diagram illustrating a display system according to an embodiment of the present invention. As shown in FIG. 1 , the display system 10 is configured to display high-resolution image content received from an external source device 50 by connecting a plurality of display devices 100-1 to 100-8 to each display device 100- 1 to 100-8).

In this case, the external source device 50 may be implemented as an electronic device such as a computer, a host device, or other display devices 100-1 to 100-8. In addition, the display system 10 is an LFD video wall (Large Format Display Videowall) in which a plurality of Full High Definition (FHD) and Ultra High Definition (UHD) resolution display devices 100 are connected in a loop out format. can be implemented as However, the above-described example is only an embodiment, and may be implemented in various display systems that display one image using a plurality of display apparatuses 100 .

In this case, the plurality of display apparatuses 100-1 to 100-8 transmit image data signals to display each high-resolution image content (FHD image or UHD image, etc.) on the entire display apparatus 100 at high speed. There is a need not to be lost. If the respective signal data received by the plurality of display apparatuses 100 - 1 bet 100 - 8 are significantly different, a viewer viewing the display system 10 may see a distorted image. Accordingly, in order to reduce distortion or loss of respective signal values input to the plurality of display apparatuses 100-1 to 100-8, the plurality of display apparatuses 100-1 to 100-8 display respective image contents. There is a need to control.

Specifically, in an embodiment of the present invention, the display device 100 determines the resolution (FHD and UHD) of the image content input from the external source device 50, and displays the input image content based on the determined resolution. A bandwidth for transmission to another display device 100 may be determined. When the resolution of the image content input from the external source device 50 is the first resolution, the display apparatus 100 may determine the bandwidth as the first bit rate (High Bit Rate1, HBR1). Meanwhile, when the resolution of the image content input from the external source device 50 is the second resolution, the display device 100 may determine the bandwidth as the second bit rate (High Bit Rate2, HBR2).

In addition, the display apparatus 100 may determine a processing mode for transmitting the image content received from the external source apparatus 50 to the other display apparatuses 100 - 1 to 100 - 8 . The processing mode may be a bypass mode or a repackaging mode. In the bypass mode, the first display device 100-1 passes the image content input from the external source device 50 to the second display device 100-2 at the determined bit rate without parsing it. through) to reduce ontime. Meanwhile, in the repackaging mode, when the first display apparatus 100-1 transmits the image content input from the external source apparatus 50 to the second display apparatus 100-2 at the determined bit rate, the processed image content It is a mode to restore and transmit Compared to the bypass mode, the repackaging mode has a longer ontime, but has the advantage of restoring a lost signal.

The processing mode of the display apparatus 100 includes the bypass mode and the above based on the arrangement position of the display apparatus 100 in a video wall in which a plurality of display apparatuses 100 - 1 to 100 - 8 are arranged in a matrix. One of the repackaging modes may be determined.

The repackaging mode may be determined to be regularly operated in a preset arrangement order among the display apparatuses 100-1 to 100-8 in order to prevent signal loss of an image processed by the display apparatus 100 or to restore a lost signal. there is.

In addition, the bypass mode and the repackaging mode may be determined according to a signal loss rate of the image content processed by the display apparatus 100 regardless of an arrangement position in the video wall of the display apparatus 100 . That is, when the signal loss rate of the image content processed by the first display apparatus 100-1 is equal to or greater than a preset value, the processing mode restores the signal loss of the processed image and transmits it to the second display apparatus 100-2. It may be a repackaging mode. Meanwhile, when the signal loss rate of the image content processed by the first display apparatus 100-1 is less than a preset value, the processing mode transmits the processed image to the second display apparatus 100-2 without parsing the image. (pass through) may be a bypass mode.

Referring to FIG. 1 , the first display apparatus 100 - 1 receives a high-resolution image from the external source apparatus 50 and determines the resolution (eg, FHD or UHD) of the input image content. The first display apparatus 100 - 1 determines a bandwidth for transmitting the image content received from the external source apparatus 50 to the second display apparatus 100 - 2 based on the determined resolution. In addition, the first display apparatus 100-1 determines a processing mode for transmitting the image content received from the external source apparatus 50 to the second display apparatus 100-2, and determines the above-determined bandwidth. The image content processed according to the processing mode determined based on , is transmitted to the second display apparatus 100 - 2 .

Then, the second display apparatus 100 - 2 receives the image content processed by the first display apparatus 100 - 1 . The second display apparatus 100 - 2 determines the resolution of the image received from the first display apparatus 100 - 1 . The second display apparatus 100 - 2 determines a bandwidth for transmitting the image content received from the first display apparatus 100 - 1 to the third display 100 - 3 based on the determined resolution. . Also, the second display apparatus 100-2 determines a processing mode for transmitting the image content received from the first display apparatus 100-1 to the third display apparatus 100-3, and uses the determined bandwidth. The image content processed according to the processing mode determined based on the background is transmitted to the third display apparatus 100 - 3 .

Accordingly, in the above-described embodiments of the present invention, the plurality of display apparatuses 100-1 to 100-8 constituting the video wall are the external source apparatus 50 or other display apparatuses 100-1 to 100-8, respectively. ) receives a high-resolution image and determines the resolution of the input image. Each of the display apparatuses 100-1 to 100-8 determines a bandwidth for transmitting each received image to the other display apparatuses 100-1 to 100-8 based on the determined resolution, and each received image A processing mode for transmitting content to other display devices 100-1 to 100-8 is determined, and a processing mode determined in each display device 100-1 to 100-8 based on the determined bandwidth The processed image content is transmitted to the other display apparatuses 100-1 to 100-8.

According to various embodiments of the present invention as described above, the display device 100 included in the video wall minimizes signal loss of the image content received from the external source device 10 and enables the display device 100-1 of the other display device 100-1 at high speed. to 100-8) can be transmitted.

2 is a block diagram schematically illustrating the configuration of the display apparatus 100 according to an embodiment of the present invention. As shown in FIG. 2 , the display apparatus 100 includes an image input unit 110 and a processor 120 .

The image input unit 110 communicates with the external source device 50 . In particular, the image input unit 110 may receive image content from the external source device 50 . In this case, the external source device may be implemented as, for example, a computer, a host device, or other display device.

In addition, the image input unit 110 has a display interface for transmitting the image content processed by the first display apparatus 100 - 1 receiving an image from the external source apparatus 50 to the second display apparatus 100 - 2 . may include, and the display interface may include a reception (Rx) terminal and a transmission (Tx) terminal.

The processor 120 controls the overall function of the display apparatus 100 processing the image content received from the external source apparatus 50 . In particular, the processor 120 determines the resolution of the image content input from the external source device 50 . In addition, the processor 120 determines a bandwidth for transmitting the processed image to the other display apparatuses 100 - 1 to 100 - 8 based on the resolution of the image determined by the display apparatus 100 .

Then, the processor 120 determines a processing mode for minimizing the signal loss of the image content processed based on the bandwidth determined by the display apparatus 100 . The processor 120 may determine at least one of a processing mode of a bypass mode and a repackaging mode. The bypass mode is a mode in which the first display apparatus 100 - 1 passes through the image content input from the external source apparatus 50 to the second display apparatus 100 - 2 without parsing it. . The repackaging mode is a mode in which the first display apparatus 100 - 1 reconstructs an image received from the external source apparatus 50 and processed, and transmits the reconstructed image to the second display apparatus 100 - 2 .

Also, in a video wall in which a plurality of display devices 100 are arranged in a matrix, the processor 120 may determine one of the bypass mode and the repackaging mode based on the arrangement position of the display devices 100 . there is. In this case, the processor 120 may be implemented to periodically determine the repackaging mode in the display device 100 located in a specific arrangement.

In addition, the processor 120 may determine a signal loss rate of the image content processed by the display apparatus 100 , and determine one of a bypass mode and a repackaging mode according to the determined signal loss rate. That is, the processor 120 may be implemented to determine the processing mode of the display apparatus 100 as the repackaging mode when the signal loss rate of the image processed by the display apparatus 100 is equal to or greater than a preset value. When the signal loss rate of the image processed by the display apparatus 100 is less than a preset value, the processor 120 may determine the processing mode of the display apparatus 100 as the bypass mode.

Hereinafter, the present invention will be described in more detail with reference to FIG. 3 . 3 is a block diagram illustrating in detail the configuration of the display apparatus 200 according to an embodiment of the present invention. 3 , the display apparatus 200 includes an image input unit 210 , an image processing unit 220 , a display unit 230 , a memory 240 , an audio output unit 250 , an input unit 260 , and a communication unit. 270 and a processor 280 .

The image input unit 210 communicates with various types of external devices according to various types of communication methods. In particular, in an embodiment of the present invention, the image input unit 210 may transmit/receive high-resolution image content such as FHD or UHD from the external source device 50 to the display apparatus 100 . Also, the image input unit 210 may transmit/receive image content processed through the processor 120 in the first display apparatus 100 - 1 to the second display apparatus 100 - 2 .

In addition, the image input unit 210 includes a display interface for transmitting the image content processed by the first display apparatus 100 - 1 receiving an image from the external source apparatus 50 to the second display apparatus 100 - 2 . may include, and the display interface may include a reception (Rx) terminal and a transmission (Tx) terminal.

In one embodiment of the present invention, the image input unit 210 includes a digital display interface including a receiving terminal (Rx) and a transmitting terminal (Tx), such as DP1.2 (Display Port) supporting stream transmission of high-resolution images. can do. DP1.2 is only an embodiment for carrying out the present invention, and can be modified and implemented through various display interfaces supporting stream transmission of high-resolution images.

The image processing unit 220 is a component that performs image processing on the image data obtained from the image input unit 210 . The image processing unit 220 may perform various image processing, such as decoding, scaling, noise filtering, frame rate conversion, and resolution conversion, on the image data. In particular, the image processing unit 220 may process image content processed through the processor 120 .

The display unit 230 displays at least one of image content processed through the processor 120 and received from the image input unit 210 and various UIs processed by the graphic processing unit 283 . In particular, the display unit 230 displays at least one of the image contents processed by the processor 120 .

In particular, when the display apparatus 200 is implemented as one component of a video wall, the display unit 230 may display only a portion of the input image content.

The memory 240 stores various modules for driving the display device 200 . For example, the memory 240 may store software including a base module, a sensing module, a communication module, a presentation module, a web browser module, and a service module. In this case, the base module is a basic module that processes signals transmitted from each hardware included in the display apparatus 200 and transmits them to the upper layer module. The sensing module is a module for collecting information from various sensors and analyzing and managing the collected information, and may include a face recognition module, a voice recognition module, a motion recognition module, an NFC recognition module, and the like. The presentation module is a module for configuring a display screen, and may include a multimedia module for playing and outputting multimedia content, and a UI rendering module for performing UI and graphic processing. The communication module is a module for performing communication with the outside. The web browser module refers to a module that accesses a web server by performing web browsing. The service module is a module including various applications for providing various services.

In particular, the memory 240 minimizes signal loss of transmitted data when the first display apparatus 100 - 1 transmits image content received from the external source apparatus 50 to the second display apparatus 100 - 2 . and modules that perform a function to maintain the on-time speed of image processing as fast as possible. Specifically, the memory 240 may store a reception module, a resolution determination module, a bandwidth determination and a processing mode determination module.

More specifically, the receiving module determines that an image is input from the external source device 50 to the display device 100 . In addition, the resolution determining module determines whether the resolution received by the display apparatus 100 from the external source apparatus 50 is FHD or UHD. In addition, the bandwidth determination and processing mode determination module transmits the received image to the second display apparatus 100-2 based on the resolution received by the first display apparatus 100-1 from the external source apparatus 50. and determines a processing mode of at least one of a bypass mode and a repackaging mode based on the determined bandwidth.

In this case, in the processing mode, the first display apparatus 100 - 1 passes through the image content received from the external source apparatus 50 without parsing the image content to the second display apparatus 100 - 2 . It may be a bypass mode and a repackaging mode in which the first display apparatus 100 - 1 restores processed image content and transmits the restored image content to the second display apparatus 100 - 2 .

As described above, the memory 240 may include various program modules, but of course, some of the various program modules may be omitted, modified, or added according to the type and characteristics of the display apparatus 200 . For example, when the above-described display device 200 is implemented as a tablet PC, the base module further includes a location determination module for determining a GPS-based location, and the sensing module further includes a sensing module for detecting a user's motion. can do.

The audio output unit 250 is configured to output various types of audio data processed by the audio processing unit (not shown) as well as various notification sounds or voice messages.

The input unit 260 receives various user manipulations for controlling the display apparatus 200 . Meanwhile, the input unit 280 may be implemented as various input devices such as a remote control, a voice input unit, a motion input unit, a pointing device, and the like, in order to receive a user manipulation input.

The communication unit 270 may include various communication chips such as a Wi-Fi chip, a Bluetooth chip, an NFC chip, and a wireless communication chip. At this time, the Wi-Fi chip, the Bluetooth chip, and the NFC chip perform communication in a LAN method, a WiFi method, a Bluetooth method, and an NFC method, respectively. Among them, the NFC chip refers to a chip operating in the NFC (Near Field Communication) method using the 13.56 MHz band among various RF-ID frequency bands such as 135 kHz, 13.56 MHz, 433 MHz, 860 ~ 960 MHz, and 2.45 GHz. In the case of using a Wi-Fi chip or a Bluetooth chip, various types of connection information such as an SSID and a session key are first transmitted/received, and then various types of information may be transmitted/received after communication connection using this. The wireless communication chip refers to a chip that performs communication according to various communication standards such as IEEE, ZigBee, 3rd Generation (3G), 3rd Generation Partnership Project (3GPP), and Long Term Evoloution (LTE).

The processor 280 controls the overall operation of the display apparatus 200 using various programs stored in the memory 240 . As shown in FIG. 3, the processor 280 includes a RAM 281, a ROM 282, a graphic processing unit 283, a main CPU 284, first to n interfaces 285-1 to 285-n, and a bus 286 . In this case, the RAM 281 , the ROM 282 , the graphic processing unit 283 , the main CPU 284 , the first to n interfaces 285 - 1 to 285 -n, etc. may be connected to each other through the bus 286 . .

The ROM 282 stores an instruction set for system booting and the like. When a turn-on command is input and power is supplied, the main CPU 284 copies the O/S stored in the memory 240 to the RAM 281 according to the command stored in the ROM 282, and executes the O/S Boot the system. When booting is completed, the main CPU 284 copies various application programs stored in the memory 240 to the RAM 281 , and executes the application programs copied to the RAM 281 to perform various operations.

The graphic processing unit 283 generates a screen including various objects such as a pointer, an icon, an image, and a text by using a calculating unit (not shown) and a rendering unit (not shown). The calculation unit calculates attribute values such as coordinate values, shape, size, color, etc. at which each object is to be displayed according to the layout of the screen by using the control command received from the input unit. The rendering unit generates screens of various layouts including objects based on the attribute values calculated by the operation unit. The screen generated by the rendering unit is displayed in the display area of the display unit 230 .

The main CPU 284 accesses the memory 240 and performs booting using the O/S stored in the memory 240 . In addition, the main CPU 284 performs various operations using various programs, contents, data, etc. stored in the memory 240 .

The first to n-th interfaces 285-1 to 285-n are connected to the various components described above. One of the interfaces may be a network interface connected to an external device through a network.

In particular, the processor 280 minimizes signal loss of the transmitted image when the first display device 100-1 transmits the image content received from the external source device 50 to the second display device 100-2. and performs a function for maintaining the on-time speed of the display apparatus 100 as fast as possible.

Specifically, the processor 280 determines the resolution of the image received by the first display apparatus 100 - 1 from the external source apparatus 50 . Then, the processor 120 transmits the image processed by the first display apparatus 100-1 to the second display apparatus 100-2 based on the resolution of the image received by the first display apparatus 100-1. Determine the bandwidth for

Also, the processor 280 determines one of the bypass mode and the repackaging mode as a processing mode for processing the image content based on the bandwidth determined by the first display apparatus 100 - 1 . Then, the processor 120 transmits the image content processed according to the processing mode determined based on the bandwidth determined by the first display apparatus 100-1 to the second display apparatus 100-2 to the image input unit. control 210 .

Specifically, in an embodiment of the present invention, the processor 280 determines whether the resolution of the image content received from the external source device 50 is FHD or UHD, the first display device 100 - 1 . In this case, when the display apparatus 100 receives high-resolution image content from the external source apparatus 50 , the processor 280 may automatically recognize the original resolution of each of FHD or UHD image content.

In other words, when the first display device 100 - 1 receives UHD resolution image content from the external source device 50 , the processor 280 recognizes the received UHD data as four FHD resolution images input. Thus, the original UHD resolution data can be recognized as input without reducing the bandwidth.

In addition, the processor 280 is configured to transmit data processed by the first display device 100-1 to the second display device 100-2 based on the resolution determined by the first display device 100-1. Determine the bandwidth. Specifically, when FHD resolution image content is input to the first display apparatus 100 - 1 , the processor 280 determines the bandwidth as the first bit rate HBR1 value. In addition, when UHD resolution image content is input to the first display device 100 - 1 , the processor 280 determines the bandwidth as the second bit rate HBR2 value.

In one embodiment of the present invention, when a plurality of display devices 100 implement a Large Format Display Videowall (LFD) using DP1.2 (Display Port 1.2) supporting stream transmission of high-resolution images, DP1.2 provides a bit rate for transmitting the image content processed by the first display device 100-1 to the second display device 100-2 in three cases (1 lane, 2 lane, 4 lane). In this case, the bit rate per lane varies according to the resolution of the image content input to the display apparatus 100 .

That is, when the first display device 100 - 1 receives FHD image content from the external source device 50 , DP1.2 provides 2.7 gigabits per second (2.7 Gbit/s) for each lane. At this time, the processor 280 subtracts 2.7 gigabits per second for each lane of DP1.2 as a bandwidth for transmitting the FHD image input to the first display device 100-1 to the second display device 100-2. It can be determined by 1 bit rate (HBR1).

Meanwhile, when the first display device 100 - 1 receives UHD image content from the external source device 50 , DP1.2 provides 5.4 gigabits per second (5.4 Gbit/s) for each lane. At this time, the processor 280 subtracts 5.4 gigabits/second for each lane of DP1.2 as a bandwidth for transmitting the UHD image input to the first display device 100-1 to the second display device 100-2. It can be determined by the 2 bit rate (HBR2).

Here, as another embodiment of the present invention, even when the first display device 100 - 1 receives image content having a higher resolution than UHD from the external source device 50 , the processor 280 performs the first display The image processed by the first display apparatus 100 - 1 may be transmitted to the second display apparatus 100 - 2 while maintaining the original resolution of the image content input to the apparatus 100 - 1 .

Specifically, for example, DP1.3 (Display Port 1.3) has a third bit rate (High Bit Rate3, HBR3) of 8.1 Gbit/s (8.1 Gbit/s) per lane for transmission of images with higher resolution than UHD. provides Accordingly, when the first display apparatus 100 - 1 receives an image of UHD resolution or higher from the external source apparatus 50 , the processor 280 transmits the image data processed by the first display apparatus 100 - 1 to the second display apparatus 100 - 1 . The bandwidth for transmission to the display apparatus 100 - 2 may be determined as a third bit rate (High Bit Rate3, HBR3) having 8.1 gigabits/second for each lane.

The processor 280 is configured to transmit the image content received from the external source device 50 to the other display devices 100-1 to 100-8 based on the bandwidth determined by the display device 100. The processing mode can be determined. The processing mode is either a bypass mode or a repackaging mode.

In the bypass mode, the first display device 100-1 passes the image content input from the external source device 50 to the second display device 100-2 at the determined bit rate without parsing it. through) to reduce ontime. Meanwhile, in the repackaging mode, when the first display apparatus 100-1 transmits the image content input from the external source apparatus 50 to the second display apparatus 100-2 at the determined bit rate, the processed image content It is a mode to restore and transmit

In this case, the bypass mode has a short on-time, so that the display apparatus 100 can quickly transfer image data input from the external source apparatus 50 to the other display apparatuses 100 - 1 to 100 - 8 . On the other hand, in the repackaging mode, the on-time is longer than the bypass in the process of restoring the signal loss of the processed image content. However, in the repackaging mode, the display apparatus 100 restores image data received from the external source apparatus 50 to minimize signal loss of transmitted image content to transmit the image data to the other display apparatuses 100-1 to 100-8. can

Therefore, when transmitting high-resolution image content in a video wall composed of a plurality of display devices 100 , the bypass mode and the repackaging mode are variably combined to minimize signal loss and transmit the image content at high speed to transmit the image content to the video wall. can be displayed.

Specifically, for example, in a video wall implemented with DP1.2 (Display Port) supporting stream transmission of high-resolution images, DP1.2 is input from the external source device 50 in the first display device 100-1. The received image content is transmitted to the second display apparatus 100 - 2 in the form of a packet. Accordingly, when the display apparatus 100 has intermittent data corruption (signal loss) compared to the previous value of the data received from the external source apparatus 50, the first display apparatus 100-1 may reconstruct the lost data by processing the received image data in the repackaging mode, repack the restored data, and transmit it to the second display apparatus 100 - 2 .

In addition, according to an embodiment of the present invention, the first display apparatus 100 - 1 provides a high-definition multimedia interface (HDMI) and a digital visual interface (DVI) as well as a display port 1.2 (DP 1.2) from the external source apparatus 50 . ) can receive various source signals through a digital interface such as In this case, in the repackaging mode according to an embodiment of the present invention, even when the first display device 100 - 1 receives various source signals from the external source device 50 through various digital interfaces, the first display device ( 100-1) may output a DP1.2 signal having Display Port Configuration Data (DPCD) and transmit it to the second display device 100-2.

Specifically, the AUX channels constituting DP 1.2 may manage link services of the source device 50 and the sink device 100 - 1 connected through DP 1.2. In this case, the link service is used for discovery, configuration, and maintenance of a link between the source device 50 and the sink device 100-1 connected through DP1.2. The AUX channel may read/write access to DPCD (DisplayPort Configuration Data) to use link services.

Here, DPCD (Display Port Configuration Data) is data mapped to the display port address area of the sink device 100-1 to which DP1.2 is connected. The source device 50 connected through DP1.2 can read the display port link and the status of the sink device 100-1 and the signal reception possibility from the DPCD address.

Accordingly, according to an embodiment of the present invention, even if the first device 100-1 receives a signal through various digital interfaces, the first device 100-1 transmits the DP1.2 signal having the DPCD to the second device. It can be implemented to output to (100-2). Accordingly, when the first device 100-2 transmits the image content input from the external source device 50 to the second device 100-2 through a digital interface other than DP1.2, the second device ( 100-2) can improve the processing speed of video content in the video wall because it does not need to additionally convert signals of other digital interfaces such as HDMI and DVI to DP1.2 signals.

As described above, in the bypass mode, the speed at which the first display apparatus 100 - 1 processes the image content received from the external source apparatus 50 and transmits it to the second display apparatus 100 - 2 is fast. However, when the plurality of display apparatuses 100 - 1 to 100 - 8 continuously process the input image content in the bypass mode, the image is displayed on the display apparatus 100 - n at a specific location due to accumulated signal loss. Distortion may occur. (n=1, 2, 3,..., n)

Accordingly, the processor 280, in order to prevent the above-described problem, in a video wall in which the arrangement of the plurality of display apparatuses 100 - 1 to 100 - 8 is formed in a matrix, the display apparatuses 100 - n located in a predetermined arrangement In the second), it may be implemented to periodically determine the repackaging mode.

And, the processor 280 determines the signal loss rate of the image content received by the display device 100 from the external source device 50 regardless of the positional arrangement of the plurality of display devices 100-1 to 100-8, , when the signal loss rate of the image processed by the display apparatus 100 is equal to or greater than a preset value, the repackaging mode may be determined. Meanwhile, when the signal loss rate of the image processed by the display apparatus 100 is less than a preset value, the processor 280 may be implemented to determine the bypass mode.

For example, in the process of transforming the image content received from the external source device 50 by the first display device 100-1 into a packet form of DP1.2 in the first display device 100-1, Signal loss may occur regardless of the resolution input to the first display apparatus 100 - 1 . In this case, the processor 280 determines a signal loss rate of the image data generated by the first display apparatus 100 - 1 , and when the signal loss rate of the image processed by the first display apparatus 100 is greater than or equal to a preset value, the loss The data can be processed in the repackaging mode to restore the data.

Then, in order to reduce the on-time in the second display device 100-2, the processor 280 receives the image content processed by the first display and performs the second display without parsing the data. 3 Data may be processed in a bypass mode that is passed though to the display apparatus 100 - 3 .

Hereinafter, the present invention will be described in more detail with reference to FIGS. 4A to 5B . 4A and 4B are diagrams illustrating a method for determining a bandwidth according to the resolution of an image input to the display apparatuses 100-1 to 100-4 in order to transmit an image input from the external source apparatus 50 to another display apparatus. It is a diagram illustrating a method.

The first display apparatus 100 - 1 determines the resolution of the image content input from the external source apparatus 50 . The first display apparatus 100 - 1 determines a bit rate for transmitting the image content processed by the display apparatus 100 - 1 to the second display apparatus 100 - 2 based on the determined resolution. When the resolution of the image input from the external source device 50 to the first display apparatus 100 - 1 is FHD, the first display apparatus 100 - 1 determines the first bit rate, and the resolution of the input image When is UHD, the first display apparatus 100-1 determines the second bit rate.

Referring to FIG. 4A , when the first display 100-1 receives an FHD resolution image from the external source device 50, the first display device 100-1 to the fourth display device 100-4 The image content processed by each of the display apparatuses 100-1 to 100-4 at the first bit rate HBR1 is transmitted to the other display apparatuses 100-1 to 100-4.

Meanwhile, as shown in FIG. 4B , when the first display device 100-1 receives an image content of UHD resolution from the external source device 50, the first display device 100-1 to the fourth display device 100-1 Reference numeral 100-4 transmits the image processed by each display apparatus 100-1 to 100-4 at the second bit rate HBR2 to other display apparatuses 100-1 to 100-4, respectively.

However, the above-described examples are merely exemplary, and may be modified and implemented according to the input resolution. For example, when FHD is received from the first display 100-1 to the second display 100-2 from the external device, each display device 100-1 to 100-2 transmits the first bit rate ( HBR1). Also, when UHD data is received from the third display 100 - 3 , the second bit rate HBR2 may be transmitted as a bit rate value from the device of the third display 100 - 3 .

According to an embodiment of the present invention, with reference to FIGS. 5A and 5B , more specifically, based on a bandwidth determined based on a resolution input to the display device 100 , the display device 100 A method of determining a processing mode for transmitting the processed image to the other display apparatuses 100-1 to 100-4 will be described.

The first display apparatus 100 - 1 may determine a processing mode for processing image content according to a bandwidth determined based on the resolution of the image input from the external source apparatus 50 . The processing mode is either a bypass mode or a repackaging mode.

Here, in the bypass mode, the first display apparatus 100 - 1 transmits the image content input from the external source apparatus 50 to the second display apparatus 100 - 2 at the determined bit rate without parsing it. This mode reduces ontime by passing through. Meanwhile, in the repackaging mode, when the first display apparatus 100-1 transmits the image content input from the external source apparatus 50 to the second display apparatus 100-2 at the determined bit rate, the processed image content It is a mode to restore and transmit

In this case, the bypass mode has an advantage in that the on-time of the display apparatus 100 is short, so that data can be quickly transferred. On the other hand, in the repackaging mode, in the process of restoring the signal loss of the image content processed by the display apparatus 100, the on-time of the display apparatus 100 is longer than the bypass, but the signal loss is minimized by restoring the processed data. can

In addition, in an embodiment of the present invention, for example, in a video wall implemented through DP 1.2 (Display Port 1.2), the repackaging mode is DP1. 2 may be implemented to output a signal and transmit it to another display device to improve data processing speed.

Accordingly, when the display device 100 transmits the high-resolution image content input from the external source device 50 to another display in a video wall in which the plurality of display devices 100 are configured in a matrix, the bypass mode and the repackaging mode It is possible to display video content on a video wall by minimizing signal loss and transmitting video content at high speed by variably combining the

In this case, a repackaging mode is periodically determined at a location of a preset arrangement of the display apparatus 100 and a lost signal is reconstructed to transmit the processed image to the other display apparatuses 100-1 to 100-4. there is.

In addition, the plurality of display apparatuses 100 determine the signal loss rate of the image content that the display apparatus 100 receives from the external source apparatus 50 and processes, regardless of the positional arrangement, 　When the signal loss rate of data is equal to or greater than a preset value, the display apparatus 100 may determine the processing mode as the repackaging mode. Meanwhile, when the signal loss rate of data processed by the display apparatus 100 is less than a preset value, the processing mode in the display apparatus 100 may be determined as a bypass mode.

According to an embodiment of the present invention, with reference to FIG. 5A , the first display device 100-1 displays an FHD resolution image from the external source device 50 through a digital interface such as HDMI and DVI as well as DP1.2. Upon receiving the input, the first display apparatus 100-1 may determine a repackaging mode to restore a signal loss of the image data received from the external source apparatus 50 and transmit it to the second display apparatus 100-2. there is.

Also, even when the first display device 100-1 receives various source signals for FHD resolution images from the external source device 50 through various digital interfaces, the first display device 100 performs a Display Port Configuration (DPCD) Data), it is possible to determine the repackaging mode to output the DP1.2 signal and transmit it to another display device. Therefore, by processing the image data input from the external source device 50 in the first display device 100-1 in the repackaging mode, the signal loss of the input image data can be reduced and the processing speed of the image data can be improved. can

The second display apparatus 100 - 2 passes through the data processed by the first display apparatus 100 - 1 to the third display apparatus 100 - 3 without parsing it, and passes it through ontime. ) can be determined as a bypass mode that keeps the The third display apparatus 100-3 may determine the bypass mode for keeping the on-time short by transmitting the data processed by the second display apparatus 100-1 to the fourth display apparatus (not shown) without parsing it. there is.

The n-th display device 100-n may determine a repackaging mode to restore signal loss of data processed by the n-1 th display device (not shown) and transmit it to the n+1-th display device (not shown). there is. The n+1th display device (not shown) to the N-1th device (not shown) pass through the input data to another display device (not shown) without parsing the input data to keep the ontime short. The bypass mode can be determined. Finally, the N-th display apparatus 100 -N, which is the final display apparatus of the video wall, may determine the bypass mode.

According to an embodiment of the present invention, referring to FIG. 5B , the first display device 100-1 displays UHD resolution images from the external source device 50 through digital interfaces such as HDMI and DVI as well as DP1.2. Upon receiving the input, the first display apparatus 100-1 may determine a repackaging mode to restore a signal loss of the image data received from the external source apparatus 50 and transmit it to the second display apparatus 100-2. there is.

Also, even if the first display device 100 - 1 receives various source signals for UHD resolution images from the external source device 50 through various digital interfaces, the first display device 100 performs a Display Port Configuration (DPCD) Data), it is possible to determine the repackaging mode to output the DP1.2 signal and transmit it to another display device. Therefore, by processing the image data input from the external source device 50 in the first display device 100-1 in the repackaging mode, the signal loss of the input image data can be reduced and the processing speed of the image data can be improved. can

The second display apparatus 100 - 2 passes through the data processed by the first display apparatus 100 - 1 to the third display apparatus 100 - 3 without parsing it, and passes it through ontime. ) can be determined as a bypass mode that keeps the The third display apparatus 100-3 may determine the bypass mode for keeping the on-time short by transmitting the data processed by the second display apparatus 100-1 to the fourth display apparatus (not shown) without parsing it. there is.

The n-th display device 100-n may determine a repackaging mode to restore signal loss of data processed by the n-1 th display device (not shown) and transmit it to the n+1-th display device (not shown). there is. The n+1th display device (not shown) to the N-1th device (not shown) pass through the input data to another display device (not shown) without parsing the input data to keep the ontime short. The bypass mode can be determined. Finally, the N-th display apparatus 100 -N, which is the final display apparatus of the video wall, may determine the bypass mode.

However, the embodiments shown in FIGS. 5A and 5B are only exemplary embodiments for implementing the present invention, and although not shown, the first display device 100 - 1 provides an FHD or UHD display from the external source device 50 . When receiving an image, the first display apparatus 100-1 determines the repackaging mode, the second display apparatus 100-2 determines the bypass mode, and the third display apparatus 100-3 determines the bypass mode. The mode may be determined and the fourth display device (not shown) may be implemented in various variable combinations, such as determining a repackaging module at a preset arrangement position of the display device 100 .

Specifically, for example, when the first display apparatus 100 - 1 receives the FHD image from the external source apparatus 50 , the repackaging mode may be determined for each n-th display apparatus 100 - n. For illustrative purposes, when n is a number from 1 to 100, it may be said that 100 display devices are connected to the video wall. Here, the arrangement position of the device to which the repackaging mode is periodically set may be determined as the display device 100 - 8n located at a position of a multiple of 8 such as n=8, 16, 24, ..., 100, etc. FIG.

Meanwhile, when the first display apparatus 100 - 1 receives a UHD image from the external source apparatus 50 , the repackaging mode may be applied to each n-th display apparatus 100 - n. For illustrative purposes, when n is a number from 1 to 25, it may be said that 25 display devices are connected to the video wall. Here, the arrangement position of the device to which the repackaging mode is periodically set may be determined as the display device 100 - 12n at a position of a multiple of 12 such as n=12, 24, and the like.

In another embodiment (not shown), the first display apparatus 100-1 determines the repackaging mode, and the second display apparatus 100-2 determines the bypass mode according to the processing mode determination method according to the signal loss rate. Alternatively, a repackaging mode may be determined.

The above-described examples are only one embodiment for implementing the present invention, and the bypass mode and the repackaging mode are selected based on the location of the preset arrangement of the display device 100 and the signal loss rate of the data processed by the display device 100 . A processing mode can be implemented by variably combining in various ways.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 6 and 7 . 6 is a flowchart illustrating a method for the display apparatus 100 to control an image input from the external source apparatus 50 according to an embodiment of the present invention.

First, the display apparatus 100 determines the resolution of the image content (s610) received through the image input unit 110 (s620). Specifically, the display apparatus 100 may automatically recognize and determine the original resolution data (FHD and UHD) of the image content received from the external source apparatus 50 . Then, the display apparatus 100 determines a bandwidth for transmitting the received image content to the other display apparatuses 100-1 to 100-8 based on the determined resolution, and the received image content A processing mode for transmitting to the other display apparatuses 100-1 to 100-8 is determined (s630).

At this time, the processing mode is either a bypass mode or a repackaging mode. In the bypass mode, the first display device 100-1 passes the image content input from the external source device 50 to the second display device 100-2 at the determined bit rate without parsing it. through) to reduce ontime. Meanwhile, in the repackaging mode, when the first display apparatus 100-1 transmits the image content input from the external source apparatus 50 to the second display apparatus 100-2 at the determined bit rate, the processed image content It is a mode to restore and transmit

In this case, the repackaging mode is periodically determined at a predetermined arrangement position of the display apparatus 100 and the lost signal is reconstructed to transmit the processed image to the other display apparatuses 100-1 to 100-8. there is.

And, regardless of the positional arrangement of the plurality of display apparatuses 100 , the display apparatus 100 determines the signal loss rate of the image content received from the external source apparatus 50 and processed, and When the signal loss rate of data is equal to or greater than a preset value, the display apparatus 100 may determine the processing mode as the repackaging mode. Meanwhile, when the signal loss rate of data processed by the display apparatus 100 is less than a preset value, the processing mode in the display apparatus 100 may be determined as a bypass mode.

In addition, the display apparatus 100 displays the image content processed according to the processing mode determined based on the bandwidth determined according to the resolution of the image input from the external source apparatus 50 to the other display apparatuses 100 - 1 to 100 . -8) (s640).

Accordingly, in a video wall in which a plurality of display apparatuses 100 are configured in a matrix, the display apparatus 100 displays high-resolution image content input from the external source apparatus 50 to other display apparatuses 100-1 to 100-8. By variably combining bypass mode and repackaging mode, the loop out on time is kept as short as possible and signal loss is minimized, so that the same high-resolution video content can be displayed quickly throughout the video wall. .

Here, the loop out on time is the second display device 100-2 after the screen of the first display device 100-1 is turned on in the video wall connected to the plurality of display devices 100. It means the time until the screen turns on. That is, in an embodiment of the present invention, the processor 120 can shorten the time it takes for the screens to turn on from the first set to the last set in the video wall in which the plurality of display devices 100 are connected to each other by variably combining the processing modes. can

FIG. 7 is a sequence diagram illustrating a method for the display system 10 to control image content received from the external source device 50 according to an embodiment of the present invention. First, the external source device 50 transmits image content to the first display device 100-1 (s710). In this case, the first display apparatus 100 - 1 may be connected to the external source apparatus 50 and the second display apparatus 100 - 2 using a display interface, and display interface input (Rx) and output (Tx) terminals It is possible to transmit the bit rate of the processed image content through .

Then, the first display apparatus 100-1 determines the resolution of the image content received from the external source apparatus 50 (s720) and displays the image content (s730).

Also, the first display apparatus 100-1 determines a bandwidth for transmitting the processed image to the second display apparatus 100-2 based on the determined resolution of the image content and determines a processing mode. (s740). Specifically, the processing mode is a bypass mode or a repackaging mode.

Then, the first display apparatus 100-1 transmits the image content processed based on the determined bandwidth to the second display 100-2 (s750).

Also, the second display apparatus 100-2 determines the resolution of the image content received from the first display apparatus 100-1 based on the image content processed by the first display apparatus 100-1 ( s760). The second display apparatus 100-2 displays the determined resolution (S770). In addition, the method of processing the image content displayed by the second display apparatus 100 - 2 goes through the same process as the processing method of the first display apparatus 100 - 1 .

When the video wall connected to the plurality of display devices 100 by the display system 10 as described above transmits the high-resolution image content input from the external source device 50 to another display, it loops out On time) is kept as short as possible and signal loss is minimized to transmit and display clear video contents at high speed.

Meanwhile, the display method according to various embodiments described above may be implemented as a program and provided to the display device 100 or the input device. In particular, a program including a control method of the display apparatus 100 may be stored and provided in a non-transitory computer readable medium.

The non-transitory readable medium refers to a medium that stores data semi-permanently, rather than a medium that stores data for a short moment, such as a register, cache, memory, and the like, and can be read by a device. Specifically, the above-described various applications or programs may be provided by being stored in a non-transitory readable medium such as a CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, and the like.

In addition, although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the claims In addition, various modifications are possible by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

110, 210: video input unit 120, 280: processor
220: image processing unit 230: display
240: memory 250: audio output unit
260: input unit 270: communication unit

Claims (18)

A display device included in a plurality of display devices, the display device comprising:
interface; and
The resolution of the image content received through the interface is determined, and a bandwidth for transmitting the received image content to another display device is determined based on the determined resolution, and the display in the plurality of display devices A processing mode for transmitting the received image content to the other display device is determined based on an arrangement order of the devices, and the image content is displayed through the interface based on the determined bandwidth according to the determined processing mode A processor that transmits to the device; includes;
The processing mode includes a bypass mode and a repackaging mode,
The processor is
when it is determined that the processing mode is the bypass mode, transmitting the received image content to the other display device through the interface without parsing the received image content;
When it is determined that the processing mode is the repackaging mode, the display apparatus restores the received image content and transmits it to the other display apparatus through the interface. delete delete According to claim 1,
The repackaging mode is a display device, characterized in that the display device and the display device, characterized in that the regular operation in a preset arrangement order of the other display device. According to claim 1,
The processor is
and determining a signal loss rate of the received image content, and determining one of the bypass mode and the repackaging mode according to the determined signal loss rate. 6. The method of claim 5,
The processor is
When the determined signal loss rate is equal to or greater than a preset value, the repackaging mode is determined, and when the determined signal loss rate is less than a preset value, the bypass mode is determined. According to claim 1,
The processor is
When the resolution of the received image content is the first resolution, it is determined that the bandwidth is a first bit rate (High Bit Rate1, HBR1), and when the resolution of the received image content is the second resolution, the bandwidth is A display device, characterized in that the determination is made at a 2-bit rate (High Bit Rate2, HBR2). delete According to claim 1,
The display device and the other display device, the display device, characterized in that included in a video wall (Videowall). A method of controlling a display device included in a plurality of display devices, the method comprising:
determining the resolution of the received video content;
A bandwidth for transmitting the received image content to another display apparatus is determined based on the determined resolution, and the received image content is displayed on the other display apparatuses based on an arrangement order of the display apparatuses in the plurality of display apparatuses. determining a processing mode for transmission to ; and
Transmitting the image content to the other display device based on the determined bandwidth according to the determined processing mode; and
The processing mode includes a bypass mode and a repackaging mode,
The sending step is
when it is determined that the processing mode is the bypass mode, transmitting the received image content to the other display device without parsing the received image content;
When it is determined that the processing mode is the repackaging mode, the method of controlling a display apparatus to restore the received image content and transmit it to the other display apparatus. delete delete The method of claim 10 , wherein the repackaging mode is periodically operated in a preset arrangement order of the display device and the other display device. 11. The method of claim 10,
Further comprising; determining a signal loss rate of the received video content;
Determining the processing mode comprises:
and determining one of the bypass mode and the repackaging mode according to the determined signal loss rate of the image content. 15. The method of claim 14,
Determining the processing mode comprises:
When the determined signal loss rate is equal to or greater than a preset value, the repackaging mode is determined, and when the determined signal loss rate is less than a preset value, the bypass mode is determined. ◈Claim 16 has been abandoned at the time of payment of the registration fee.◈ 11. The method of claim 10,
Determining the bandwidth comprises:
When the resolution of the received image content is the first resolution, the bandwidth is determined as a first bit rate (High Bit Rate1, HBR1), and when the resolution of the received image content is the second resolution, the bandwidth is A method of controlling a display device, characterized in that the determination is made at a 2-bit rate (High Bit Rate2, HBR2). delete ◈Claim 18 was abandoned when paying the registration fee.◈ 11. The method of claim 10,
The control method of a display device, characterized in that the display device and the other display device are included in a video wall.

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