Method for controlling multi-display control signal and multi-display controlling device

Abstract

The present invention relates to a multi-display control device comprising: one main PC; a plurality of sub PCs connected to the main PC via a wired or wireless network; and a plurality of display devices connected to each of the plurality of sub PCs; and a method for controlling a multi-display signal comprising the steps of: the main PC checking whether a video source to be played is stored in each of the plurality of sub PCs; the main PC checking a selected playback scenario; the main PC generating a playback control signal to be provided to each of the plurality of sub PCs based on the playback scenario, wherein the playback control signal includes identification information of the video source to be played and output area information of the video source to be played. The main PC transmitting the playback control signal to the plurality of sub PCs; and each of the plurality of sub PCs transmitting a video signal to a connected display device based on the playback control signal.

Description

Technology Field

[0001] The present invention relates to multi-display control technology, and in particular, to a method for controlling a multi-display control signal and a multi-display control device that enables the output of images in various forms through a plurality of display devices. Background Technology

[0002] Currently, advertisements on the exterior or interior of buildings, as well as video works by artists like Nam June Paik, sometimes utilize a single display device; however, they frequently use multiple display devices due to the advantage of being able to express a wide variety of forms.

[0003] However, when using multiple display devices, display control for each of the multiple devices—that is, multi-display control—is required. Since this multi-display control requires transmitting video to be played and video control signals to each display device, the main PC connected to the multiple display devices must be equipment with high specifications.

[0004] Therefore, the reality is that multiple displays require significant costs. Prior art literature

[0005] Korean Registered Patent No. 10-1016861 (Registration Date: 2011.02.15) The problem to be solved

[0006] The present invention provides a method for controlling a multiple display control signal and a multiple display control device that enables multiple displays for multiple display devices through multiple sub-computers using a low-spec computer as a main computer.

[0007] In addition, the present invention provides a method for controlling multiple display control signals and a multiple display control device that enables a main PC to automatically recognize display devices connected to each of a plurality of sub-computers.

[0008] In addition, the present invention provides a method for controlling a multiple display control signal and a multiple display control device that enables remote adjustment of screen conditions, such as brightness, color temperature, and contrast ratio, of a plurality of display devices. means of solving the problem

[0009] A method for controlling multiple display signals according to an embodiment of the present invention for solving the above problem may include, through a multiple display control device comprising: one main PC; a plurality of sub PCs connected to the main PC via a wired or wireless network; and a plurality of display devices connected to each of the plurality of sub PCs, the main PC checking whether a video source to be played is stored in each of the plurality of sub PCs; the main PC checking a selected playback scenario; the main PC generating a playback control signal to be provided to each of the plurality of sub PCs based on the playback scenario - the playback control signal includes identification information of the video source to be played and output area information of the video source to be played -; the main PC transmitting the playback control signal to the plurality of sub PCs; and each of the plurality of sub PCs transmitting a video signal to a connected display device based on the playback control signal.

[0010] The above main PC stores a plurality of predetermined basic scenarios—the above basic scenarios are playback scenarios according to the arrangement of the plurality of display devices—and in this case, the method for controlling multiple display signals may further include the step of the main PC selecting a currently executable scenario among the plurality of basic scenarios based on the number of currently connected multiple sub PCs.

[0011] The output area information of the above-mentioned image source to be reproduced may include information regarding the pixel coordinates of the above-mentioned image source to be reproduced.

[0012] The above-described multi-display control device further includes an external control device connected to the main PC, and when the main PC is set to an external control mode, the method for controlling a multi-display signal according to an embodiment of the present invention may further include the step of the main PC receiving a control signal from the external control device; and the step of the main PC generating an external control playback scenario based on the control signal and designating it as the playback scenario.

[0013] Prior to the step of identifying the above-mentioned playback scenario, a method for controlling multiple display signals according to an embodiment of the present invention may include: a step in which the main PC requests each of the plurality of sub PCs to transmit a signal corresponding to a unique identification ID; a step in which each of the plurality of sub PCs transmits an identification image corresponding to the unique identification ID to the display device; a step in which the main PC checks a first image in which each identification image displayed on the screen of the plurality of display devices is captured; and a step in which the main PC checks the installation location of each of the plurality of display devices using each identification image of the first image.

[0014] Each of the above plurality of sub PCs may store one of the identification images corresponding to a unique identification ID.

[0015] Each of the plurality of sub PCs stores a plurality of identification images, and each of the plurality of identification images contains information regarding different identification IDs. In the step of requesting the transmission of a signal corresponding to the unique identification ID, the main PC requests each of the plurality of sub PCs to transmit an identification image for a different identification ID, and in the step of transmitting an identification image corresponding to the unique identification ID, each of the plurality of sub PCs can transmit an output signal corresponding to the identification image for the identification ID requested by the main PC among the plurality of identification images stored.

[0016] The first image above includes length reference information, and in the step of verifying the installation location of each of the plurality of display devices, the main PC can verify the relative positions between the plurality of display devices based on the length reference information.

[0017] A multi-display control device according to another embodiment of the present invention for solving the above problem comprises: one main PC; a plurality of sub PCs connected to the main PC via a wired or wireless network; and a plurality of display devices connected to each of the plurality of sub PCs. The main PC checks whether a video source to be played is stored in each of the plurality of sub PCs, checks a playback scenario, generates a playback control signal to be provided to each of the plurality of sub PCs based on the playback scenario, transmits the playback control signal to the plurality of sub PCs, and each of the plurality of sub PCs transmits a video signal to a connected display device based on the playback control signal. The playback control signal may include identification information of the video source to be played and output area information of the video source to be played.

[0018] The main PC stores a plurality of predetermined basic scenarios, and among the plurality of basic scenarios, selects a currently executable scenario based on the number of currently connected sub PCs, and the basic scenario may be a playback scenario according to the arrangement of the plurality of display devices.

[0019] The output area information of the above-mentioned image source to be reproduced may include information regarding the pixel coordinates of the above-mentioned image source to be reproduced.

[0020] The above-described multi-display control device further includes an external control device connected to the main PC, and when the main PC sets an external control mode, it receives a control signal from the external control device and generates an external control playback scenario based on the control signal, and can designate it as the playback scenario.

[0021] When the main PC requests each of the plurality of sub PCs to transmit a signal corresponding to a unique identification ID, each of the plurality of sub PCs transmits an identification image corresponding to the unique identification ID to the display device, and the main PC checks a first image in which each identification image displayed on the screen of the plurality of display devices is captured, and can check the installation location of each of the plurality of display devices using each identification image of the first image.

[0022] Each of the above multiple sub-PCs stores multiple identification images, and when the main PC requests each of the above multiple sub-PCs to transmit identification images for different identification IDs, each of the above multiple sub-PCs transmits an output signal corresponding to the identification image for the identification ID requested by the main PC among the multiple identification images stored, and each of the above multiple identification images may include information for different identification IDs.

[0023] The first image above includes length reference information, and the main PC can determine the relative positions between the plurality of display devices based on the length reference information. Effects of the invention

[0024] The present invention enables multiple displays for multiple display devices through multiple sub-computers using a low-spec computer as the main computer.

[0025] In addition, the present invention automatically recognizes display devices connected to each of a plurality of subcomputers, so that the operator does not have to worry about signal line connections between the subcomputer and the display device.

[0026] In addition, the present invention allows each sub PC to be connected to a display device and a screen adjustment cable in a 1:1 manner, so that the main PC can adjust the screen brightness, color temperature, or contrast ratio of the display device through the sub PC. Brief explanation of the drawing

[0027] FIG. 1 is a network configuration diagram of a multi-display control device according to an embodiment of the present invention. FIG. 2 is a configuration diagram of a main PC and a sub PC according to an embodiment of the present invention. FIG. 3 is a drawing for explaining an image control signal and a display area according to an embodiment of the present invention. FIG. 4 is an overall flowchart of a method for controlling multiple display control signals according to an embodiment of the present invention. FIG. 5 is a diagram illustrating a method for checking a display device connected to a sub PC from a main PC according to a first embodiment of the present invention. FIG. 6 is a diagram illustrating a method for checking a display device connected to a sub PC from a main PC according to a second embodiment of the present invention. FIG. 7 is a diagram illustrating a method for adjusting the screen of a display device through a main PC according to an embodiment of the present invention. FIG. 8 is a diagram illustrating an auto-template process according to an embodiment of the present invention. Specific details for implementing the invention

[0028] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are assigned the same reference number, and redundant descriptions thereof will be omitted. Furthermore, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description will be omitted.

[0029] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0030] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0031] In this application, each step described may be performed regardless of the order listed, except where it must be performed in the order listed by a particular causal relationship.

[0032] In this application, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0033] The present invention will be described below with reference to the attached drawings.

[0034] FIG. 1 is a network configuration diagram of a multi-display control device according to an embodiment of the present invention. Referring to FIG. 1, the network of a multi-display control device (1000) according to an embodiment of the present invention includes one main PC (100), a plurality of sub PCs (200) connected to the main PC (100) via a wired or wireless network, and a plurality of display devices (300) connected to each of the plurality of sub PCs (200) via a wireless or wired network in a 1:1 ratio.

[0035] And the network of the multi-display control device (1000) according to an embodiment of the present invention may further include an external control device (400) and / or a camera device (500) connected to the main PC (100) via a wired or wireless network.

[0036] The main PC (100) controls the output information of each display device (300) through each sub PC (200). The output information includes the type of image displayed on the screen of the display device (300) (i.e., image source to be played), the form in which the image is displayed (i.e., the location of the area where the image is displayed or the image display pattern, etc.), and the brightness, contrast ratio, color temperature, etc. of the screen of the display device (300).

[0037] Each sub PC (200) provides information corresponding to a signal received from the main PC (100) to the display device (300), and the display device (300) displays output information according to the information received from the sub PC (200).

[0038] The external control device (400) includes all types of devices capable of generating and providing information, such as a joystick, keyboard, touchpad, console, etc. The camera device (500) is for capturing images displayed on a plurality of display devices (300) and providing the captured images to the main PC (100), and includes all types of devices capable of capturing images, and operates under the control of the main PC (100) or by user operation.

[0039] Each display device (300) of the multi-display control device (1000) according to an embodiment of the present invention may be fixedly installed for a long period of time on the exterior wall or rooftop of a building or inside a building when used as a fixed type, and may be fixedly installed on the exterior wall or rooftop of a building or on the ground or other place when used as a mobile type, and then disassembled and installed in another place.

[0040] FIG. 2 is a configuration diagram of a main PC and a sub PC according to an embodiment of the present invention. Referring to FIG. 2, the main PC (100) includes a first communication unit (110), a first memory (120), and a first processor (130), and may be connected wirelessly or wired to an input device and an output device.

[0041] The input device is a device capable of receiving various information through user operation and input actions, and may be a touchpad, keyboard, mouse, button, stylus, joystick, console, and microphone, and may be an external control device (400). The output device is a device capable of outputting various information, and may be a monitor, speaker, vibration generator and tactile generator, etc.

[0042] The first communication unit (110) can communicate with the sub PC (200) via a wired or wireless network and can communicate with the input device, output device, external control device (400), and camera device (500) connected to the main PC (100) via a wired or wireless network.

[0043] The first memory (120) functions as a storage medium and can store a number of application programs running on the main PC (100), a number of basic scenarios, a number of video sources to be played, video display patterns, data and commands for controlling the operation of the sub PC (200). This memory may be provided in hardware in the form of various storage devices such as ROM, RAM, flash drive, hard drive, etc., or in the form of web storage.

[0044] The first processor (130) selects one of a plurality of basic scenarios stored in the first memory (120) as a playback scenario, generates a playback control signal to be provided to each of the plurality of sub PCs (200) according to the selected playback scenario, and provides the playback control signal to the corresponding sub PC (200).

[0045] As illustrated in FIG. 3(a), the playback control signal includes identification information of the video source to be played and output area information of the video source to be played. Here, the output video information of the video source to be played is information regarding the pixel coordinates of the output area where the video played by the video source to be played will be displayed on the screen of the display device (300). The identification information of the video source to be played enables each sub PC (300) to identify what the video source to be played is, and the coordinate information of the display area indicates the area where the video source to be played will be displayed on the screen of the display device (300).

[0046] Specifically, the coordinate information of the display area includes two section coordinates for the display area where the video source to be played is to be displayed. For example, if the two section coordinates are (X1, Y1) and (X2, X2), the display area within the entire screen of the display device (300) corresponds to an area divided into a rectangle by the pixel coordinates of (X1, Y1) and (X2, X2), as shown in FIG. 3 (b). As another example, if the two section coordinates are (X3, Y3) and (X4, X4), the display area within the entire screen of the display device (300) corresponds to an area divided into a rectangle by the pixel coordinates of (X3, Y3) and (X4, X4), as shown in FIG. 3 (c).

[0047] Therefore, since the first processor (130) does not provide the video source to be played to each sub PC (200) but provides identification information and display area information of the video source to be played, the main PC (100) may be a low-spec computer.

[0048] Additionally, the first processor (130) may have a first function for identifying what the display device (300) connected to each sub PC (200) is. The first function is more advantageous in a situation where the display device (300) connected to each sub PC (200) is not specified. If it is specified that each sub PC (200) must be connected to a specified display device (300), the operator will connect each sub PC (200) to the corresponding display device (300) according to a specified rule when installing the display device (300).

[0049] However, in the absence of a fixed rule, the operator will arbitrarily connect each sub PC (200) to the display device (300). If the operator arbitrarily connects each sub PC (200) to the display device (300) in this manner, the first processor (130) cannot determine which display device (300) each sub PC is connected to, and thus cannot generate a playback control signal according to the installation location for the multiple installed display devices (300).

[0050] The first processor (130) achieves the first function in two ways. The first method is to have each sub PC (200) store a unique identification image, and then the first processor (130) causes the unique identification image to be displayed on the screen through a display device (300) connected to each sub PC (200), and then obtain a captured image in which the screens of all display devices (300) are captured as a single frame, and identify the unique identification image displayed on each display device (300) within the captured image. At this time, the identification image is an image of information that can distinguish each display device, and may be, for example, an image of a number, an image of a fruit, an image of a symbol, etc.

[0051] Here, since the first processor (130) has already identified the unique identification image stored in each sub PC (200) through the worker's information provision or network communication with each sub PC (200), it can identify which display device (300) is connected to which sub PC (200) by identifying the unique identification image displayed on each display device (300).

[0052] The second method involves each sub PC (200) storing multiple unique identification images, and the first processor (130) providing each sub PC (200) with a different identification ID one by one so that each sub PC (200) displays one unique identification image corresponding to the received identification ID among the multiple unique identification images on the screen of a connected display device (300), then acquiring a captured image by taking a single frame of the screens of all display devices (300), and identifying the unique identification image displayed on each display device (300) within the captured image.

[0053] For this first function, the multi-display control device (1000) according to an embodiment of the present invention may further include a camera device (500) to acquire (receive) a captured image. At this time, when the first processor (130) displays a unique identification image on the screen of all display devices (300), it controls the camera device (500) to capture the screen of all display devices (300) and can receive the captured image from the camera device (500). Of course, the multi-display control device (1000) according to an embodiment of the present invention can receive a captured image taken by a person without using the camera device (500).

[0054] This first function can be used to verify whether each sub PC (200) and display device (300) is installed correctly according to the established rules, even if there are established rules for installation.

[0055] Meanwhile, when the first processor (130) sets the external control mode, it can generate an external control playback scenario based on external input information, which is information input in real time from the outside, and generate a playback control signal based on the generated external control playback scenario and provide it to each of the multiple sub PCs (200). The external control mode is intended to allow an artist or worker, etc., to spontaneously change the image displayed on the multiple display devices (300), the display form of the image, or the display pattern. At this time, in order to provide the external input information to the main PC (100), the main PC (100) may be connected via a wired or wireless network to an external control device (400) that generates the external input information.

[0056] In addition, the first processor (130) can control each of the multiple sub PCs (200) to adjust the screen so that the image displayed on each display device (300) has the same brightness, color temperature, and contrast ratio.

[0057] And the first processor (130) recognizes all display devices (300) and each of all display devices (300) within an image captured through the camera device (500) and displays the identification images displayed on the output device, and can adjust the position of at least one identification image among each identification image displayed on the screen of the output device in response to an external input.

[0058] Next, each sub PC (200) includes a second communication unit (210), a second memory (220), and a second processor (230).

[0059] The second communication unit (210) can communicate with the main PC (100) via a wired or wireless network.

[0060] The second memory (220) functions as a storage medium and can store a plurality of application programs running on the sub PC (200), a corresponding video source to be played, a video display pattern, at least one unique identification image, a reference image for screen adjustment, data and commands for the operation of the display device (300). Here, the reference image for screen adjustment stored in the second memory (220) of each sub PC (300) is the same image information.

[0061] The second processor (230) operates according to a playback control signal received from the main PC (100). For example, the second processor (230) interprets the playback control signal received from the main PC (100), extracts a video source to be played or a corresponding identification image or reference image information from the second memory (220) in response to the playback control signal, and controls the display device (300) to display the extracted video source or image information as a screen output area according to the playback control signal.

[0062] Each sub PC (200) can be a low-spec computer as it only needs to operate according to the playback control signal received from the main PC (100).

[0063] It is preferable that each sub PC (200) be directly connected to a display device (300) via a video cable such as HDMI, and a screen adjustment cable for screen adjustment is connected to the display device (300).

[0064] FIG. 4 is an overall flowchart of a method for controlling a multiple display control signal according to an embodiment of the present invention. Referring to FIG. 4, in step (S401), the main PC (100) inquires with each of the plurality of sub PCs (200) whether they have stored a video source to be played. The type of video source to be played that is inquired of with each sub PC (200) may differ for each sub PC (200) or may be the same.

[0065] For example, if the main PC (100) controls each sub PC (200) while all sub PCs (200) have stored all types of video sources to be played, or if all sub PCs (200) use the same type of video source to be played, the main PC (100) will provide each sub PC (200) with a list of video sources to be played (i.e., a list of identification information) and inquire whether to store them. As another example, if each sub PC (200) stores only the video source to be played, and at least one of the multiple sub PCs (200) uses a video source to be played that is different from the other sub PCs (200), the main PC (100) will provide each sub PC (200) with a list of video sources to be played (i.e., a list of identification information) and inquire whether to store them.

[0066] In step (S402), the main PC (100) receives a response to step (S401) from each sub PC (200) and checks whether each sub PC (200) is properly storing the video source to be played. If there is a sub PC (200) that does not store the video source to be played that was inquired about in the response received in step (S402), the main PC (100) provides the video source to be played that is not stored to the corresponding sub PC (200).

[0067] In step (S403), the main PC (100) sets one of the multiple basic scenarios selected by the user as the playback scenario, and when it receives instructions from the user to perform the playback scenario, it checks the playback scenario.

[0068] In step (S404), the main PC (100) generates a playback control signal corresponding to each of the multiple sub PCs (200) based on a playback scenario. The playback control signal may be the same for each of the multiple sub PCs (200), but may be different for at least one of the multiple sub PCs (200). For example, if each display device (300) outputs the same video source to be played to the same display area, the playback control signal provided to the multiple sub PCs (200) is the same. On the other hand, if at least one of the multiple sub PCs (200) has a different video source to be played or a different display area, a playback control signal different from that of the other sub PCs (200) is generated for the sub PC (200) that has a different video source to be played or a different display area.

[0069] In step (S405), the main PC (100) transmits a playback control signal generated corresponding to each of the multiple sub PCs (200) to each of the sub PCs (200).

[0070] In step (S406), each of the plurality of sub PCs (200) receives a playback control signal from the main PC (100). In step (S407), each of the plurality of sub PCs (200) checks the identification information of the video source to be played included in the playback control signal from the main PC (100) and checks the output area information of the video source to be played.

[0071] In step (S408), each of the plurality of sub PCs (200) transmits a video signal generated by playing the corresponding video source to be played, based on the received playback control signal, so that it is displayed in the output area of ​​the connected display device (300).

[0072] FIG. 5 is a diagram illustrating a method for verifying a display device connected to a sub PC from a main PC according to a first embodiment of the present invention, wherein there are two sub PCs (300) and two display devices (300) each. Each sub PC (300) stores all unique identification images in a second memory (220).

[0073] Referring to FIG. 5, in step (S501), the main PC (100) checks the network connection with each sub PC (200). The main PC (100) identifies each sub PC (200) by checking the network connection.

[0074] In step (S502), the main PC (100) assigns different identification IDs to each sub PC (200). For example, the main PC (100) assigns '1' as the identification ID to the first sub PC (200), assigns '2' as the identification ID to the second sub PC (200), and assigns '3' as the identification ID to the third sub PC (200).

[0075] In step (S503), the main PC (100) commands (requests) the first sub PC (200) to display the identification image corresponding to the identification ID along with the assigned identification ID. In step (S504), the first sub PC (200) checks the identification ID received from the main PC (100) and extracts and checks the identification image corresponding to the identification ID from the second memory (220). In step (S505), the first sub PC (200) transmits the confirmed identification image to the connected first display device (300).

[0076] In step (S506), the main PC (100) commands (requests) the second sub PC (200) to display the identification image corresponding to the identification ID along with the assigned identification ID. Step (S506) is performed at the same time as step (S503). In step (S507), the second sub PC (200) checks the identification ID received from the main PC (100) and extracts and checks the identification image corresponding to the identification ID from the second memory (220). In step (S508), the second sub PC (200) transmits the confirmed identification image to the connected second display device (300).

[0077] In accordance with the execution of steps S502 to S508, an identification image labeled 'No. 1' is displayed on the screen of the first display device (300), and an identification image labeled 'No. 2' is displayed on the screen of the second display device (300).

[0078] In this manner, with the identification image displayed on each display device (300), the camera device (500) takes a picture of the screens displaying the identification image on each display device (300) by command of the main PC (100) or by an operator, and provides the captured image, i.e., the first image, to the main PC (100).

[0079] In step (S509), the main PC (100) receives a first image provided by the camera device (500). In step (S510), the main PC (100) identifies each identification image in the first image and identifies the location of each identification image, that is, the location of each display device (300).

[0080] In step (S511), the main PC (100) identifies the location of the display device connected to each sub PC (200) through an identification image corresponding to the identification ID, based on the identification ID assigned to each sub PC (200).

[0081] FIG. 6 is a diagram illustrating a method for verifying a display device connected to a sub PC from a main PC according to a second embodiment of the present invention, wherein there are two sub PCs (300) and two display devices (300) each. Each sub PC (300) stores a unique identification image in a second memory (220).

[0082] Referring to FIG. 6, in step (S601), the main PC (100) checks the network connection with each sub PC (200) to identify each sub PC (200).

[0083] In step (S602), the main PC (100) commands (requests) the first sub PC (200) to display a self-stored identification image on the screen. In step (S603), the first sub PC (200), in accordance with the command to display the identification image received from the main PC (100), extracts and verifies a unique identification image stored in the second memory (220).

[0084] In step (S604), the first sub PC (200) transmits the verified unique identification image to the connected first display device (300).

[0085] In step (S605), the main PC (100) commands (requests) the second sub PC (200) to display a screen of a unique identification image stored in itself. Here, step (S605) is performed at the same time as step (S602). In step (S606), the second sub PC (200) extracts and verifies a unique identification image from the second memory (220) in accordance with the command of the main PC (100). In step (S607), the second sub PC (200) transmits the verified identification image to the connected second display device (300).

[0086] In accordance with the execution of steps S602 to S607, an identification image labeled 'No. 1' is displayed on the screen of the first display device (300), and an identification image labeled 'No. 2' is displayed on the screen of the second display device (300).

[0087] In this manner, with the identification image displayed on each display device (300), the camera device (500) takes a picture of the screens displaying the identification image on each display device (300) by command of the main PC (100) or by an operator, and provides the captured image, i.e., the first image, to the main PC (100).

[0088] In step (S608), the main PC (100) receives a first image provided by the camera device (500). In step (S609), the main PC (100) identifies each identification image in the first image and identifies the location of each identification image, that is, the location of each display device (300).

[0089] In step (S610), the main PC (100) identifies the location of the display device connected to each sub PC (200) through an identification image corresponding to the identification ID, based on the identification ID assigned to each sub PC (200).

[0090] FIG. 7 is a diagram illustrating a method for adjusting the screen of a display device through a main PC according to an embodiment of the present invention, and is an example in which there are two sub PCs (300) and two display devices (300). Each sub PC (300) stores a reference image for screen adjustment in a second memory (220).

[0091] Referring to FIG. 7, in step (S701), the main PC (100) checks the network connection with each sub PC (200) to identify each sub PC (200).

[0092] Accordingly, the main PC (100) commands all sub PCs (200) to transmit a reference image for screen adjustment. That is, the main PC (100) commands each of the sub PCs (200) to display the reference image for screen adjustment on the screen of the connected display device (300).

[0093] For example, in step (S702), the main PC (100) commands (requests) the first sub PC (200) to display a reference image stored in itself on the screen. In step (S703), the first sub PC (200) extracts and verifies the reference image for screen adjustment stored in the second memory (220) in accordance with the command received from the main PC (100).

[0094] In step (S704), the first sub PC (200) transmits the verified reference image for screen adjustment to the connected first display device (300).

[0095] In step (S705), the main PC (100) commands (requests) the second sub PC (200) to display a reference image for screen adjustment that it has stored itself. Here, step (S705) is performed at the same time as step (S702). In step (S706), the second sub PC (200) extracts and verifies the reference image from the second memory (220) in accordance with the command of the main PC (100). In step (S707), the second sub PC (200) transmits the verified reference image to the connected second display device (300).

[0096] In accordance with the execution of steps S702 to S707, the same reference image will be displayed on the screens of the first display device (300) and the second display device (300), and if the brightness, color temperature, and contrast ratio for the screens of each display device are the same, the reference image displayed on all display devices (300) will display the reference image with the same brightness, color temperature, and contrast ratio.

[0097] In this way, with the reference image displayed on each display device (300), the camera device (500) captures the screens displaying the reference image on each display device (300) by command of the main PC (100) or by an operator, and provides the captured image, i.e., the second image, to the main PC (100).

[0098] In step (S708), the main PC (100) receives a second image provided by the camera device (500). In step (S709), the main PC (100) identifies a reference image for each display device (300) from the second image. Here, the main PC (100) can facilitate the identification of the reference image for each display device (300) in step (S709) because it performs an operation with reference to FIG. 5 or FIG. 6 to identify the in-screen position for each display device (300) and the sub PC (200) connected to each display device (300) through the first image.

[0099] Of course, the main PC (100) can display an identification image along with a reference image for screen adjustment to the sub PC (200) so that the reference image and the identification image are included in the second image, thereby allowing the location of each display device and the connection relationship with the sub PC (200) and the reference image of each display device to be identified simultaneously.

[0100] In step (S710), the main PC (100) compares reference images for each display device. Then, in step (S711), the main PC (100) identifies a display device of a reference image that differs from at least one of the brightness, color temperature, and contrast ratio of the reference images for each display device, and identifies the identified display device as a target for screen adjustment.

[0101] In step (S712), the main PC (100) generates screen adjustment information for each screen adjustment target. At this time, the screen adjustment information is information that ensures the reference image of the screen adjustment target has the same brightness, color temperature, and contrast ratio as another normal reference image.

[0102] In step (S713), the main PC (100) provides screen adjustment information for each screen adjustment target generated to a sub PC (200) connected to the corresponding display device (300), and in step (S714), the sub PC (200) that receives the screen adjustment information provides the screen adjustment information to the connected display device (300) so that screen adjustment is performed.

[0103] FIG. 8 is a diagram illustrating an auto-template process according to an embodiment of the present invention. Referring to FIG. 8, in step (S801), the main PC (100) receives a first image captured of an identification image displayed on each display device (300).

[0104] In step (S802), the main PC (100) identifies each identification image in the first image and identifies the location of each identification image, that is, the location of each display device (300). Here, the location of each display device (300) is the display location where each identification image will be displayed.

[0105] In step (S803), the main PC (100) provides each identification image and information on the display location where each identification image will be displayed to the monitor, which is the output device.

[0106] In step (S804), the monitor displays each identification image on the screen according to the display location based on the information received from the main PC (100). Accordingly, the user checks the identification images displayed on each display device (300) and the location of each identification image through the screen of the monitor.

[0107] In step (S805), when the main PC (100) receives a position adjustment input in which the user adjusts the position of one of the multiple identification images displayed on the monitor, in step (S806), it identifies position adjustment information (including the position-adjusted coordinate values ​​and identification information of the identification image) according to the position adjustment input.

[0108] In step (S807), the main PC (100) provides position adjustment information to the monitor, and in step (S808), the monitor adjusts the position of the corresponding identification image to the position adjustment coordinate values ​​according to the position adjustment information received from the main PC (100).

[0109] The technical features disclosed in each embodiment of the present invention are not limited to that embodiment only, and as long as they are not mutually incompatible, the technical features disclosed in each embodiment may be combined and applied to different embodiments.

[0110] Therefore, in each embodiment, the technical features are described primarily, but as long as the technical features are not mutually incompatible, they may be combined and applied together.

[0111] The present invention is not limited to the embodiments described above and the attached drawings, and various modifications and variations may be possible from the perspective of those skilled in the art to which the present invention belongs. Accordingly, the scope of the present invention should be defined not only by the claims of this specification but also by equivalents thereof. Explanation of the symbols

[0112] 1000: Multi-display controller 100: Main PC 200: Sub PC 300: Display device 400: External control unit 500: Camera unit 110: 1st Communication Unit 120: 1st Memory 130: 1st processor 210: 2nd communication unit 220: Second memory 230: Second processor

Claims

Claim 1 A method for a multi-display control device to control a multi-display signal, wherein the multi-display control device comprises: one main PC; a plurality of sub PCs connected to the main PC via a wired or wireless network; and a plurality of display devices connected to each of the plurality of sub PCs, wherein the main PC provides the same video source to be played to each of the plurality of sub PCs via the wired or wireless network; the main PC checks whether the video source to be played is stored in each of the plurality of sub PCs; the main PC checks a selected playback scenario; the main PC generates a playback control signal to be provided to each of the plurality of sub PCs based on the playback scenario - wherein the playback control signal does not include the video source to be played, but includes output area information including identification information of the video source to be played and pixel coordinates for partitioning an output area in the video source to be played -; and the main PC transmits the playback control signal to the plurality of sub PCs. A method for controlling multiple display signals, comprising the step of each of the plurality of sub PCs extracting an image of a region partitioned from a video source to be played stored in each of the sub PCs based on pixel coordinates included in the playback control signal received from the main PC, and transmitting a video signal to a connected display device, wherein the step of providing the video source to be played and the step of checking whether the video source to be played is stored are performed before the step of generating the playback control signal. Claim 2 A method for controlling multiple display signals according to claim 1, wherein the main PC stores a plurality of predetermined basic scenarios—the basic scenarios are playback scenarios according to the arrangement of the plurality of display devices—and the main PC further comprises the step of selecting a currently executable scenario among the plurality of basic scenarios based on the number of currently connected sub PCs. Claim 3 delete Claim 4 A method for controlling a multi-display signal according to claim 1, wherein the multi-display control device further comprises an external control device connected to the main PC, and when the main PC is set to an external control mode, the main PC receives a control signal from the external control device; and the main PC generates an external control playback scenario based on the control signal and designates the playback scenario. Claim 5 A method for controlling multiple display signals according to claim 1, comprising, prior to the step of identifying the playback scenario, a step in which the main PC requests each of the plurality of sub PCs to transmit a signal corresponding to a unique identification ID; a step in which each of the plurality of sub PCs transmits an identification image corresponding to the unique identification ID to the display device; a step in which the main PC checks a first image in which each identification image displayed on the screen of the plurality of display devices is captured; and a step in which the main PC checks the installation location of each of the plurality of display devices using each identification image of the first image. Claim 6 A method for controlling multiple display signals according to claim 5, wherein each of the plurality of sub PCs stores one identification image corresponding to a unique identification ID. Claim 7 In claim 5, each of the plurality of sub PCs stores a plurality of identification images - each of the plurality of identification images includes information for different identification IDs - in the step of requesting the transmission of a signal corresponding to the unique identification ID, the main PC requests each of the plurality of sub PCs to transmit an identification image for a different identification ID, and in the step of transmitting an identification image corresponding to the unique identification ID, each of the plurality of sub PCs transmits an output signal corresponding to the identification image for the identification ID requested by the main PC among the plurality of identification images stored. Claim 8 In claim 5, the first image includes length reference information, and in the step of confirming the installation location of each of the plurality of display devices, the main PC controls a multiple display signal that confirms the relative position between the plurality of display devices based on the length reference information. Claim 9 A multi-display control device comprising: one main PC; a plurality of sub PCs connected to the main PC via a wired or wireless network; and a plurality of display devices connected to each of the plurality of sub PCs, wherein the main PC provides the same video source to be played to each of the plurality of sub PCs via the wired or wireless network, the main PC checks whether the video source to be played is stored in each of the plurality of sub PCs, checks a playback scenario, generates a playback control signal to be provided to each of the plurality of sub PCs based on the playback scenario, transmits the playback control signal to the plurality of sub PCs, and each of the plurality of sub PCs extracts an image of a partitioned area from the video source to be played stored in each of the sub PCs based on pixel coordinates included in the playback control signal received from the main PC and transmits a video signal to a connected display device, wherein the playback control signal does not include the video source to be played, but includes output area information including identification information of the video source to be played and pixel coordinates for partitioning an output area in the video source to be played, and the process of providing the video source to be played and checking whether the video source to be played is stored is performed before generating the playback control signal. Claim 10 In claim 9, the main PC stores a plurality of predetermined basic scenarios, and among the plurality of basic scenarios, selects a currently executable scenario based on the number of currently connected sub PCs, and the basic scenario is a playback scenario according to the arrangement of the plurality of display devices, a multi-display control device. Claim 11 delete Claim 12 A multi-display control device according to claim 9, further comprising an external control device connected to the main PC, wherein when the main PC sets an external control mode, it receives a control signal from the external control device and generates an external control playback scenario based on the control signal and designates the playback scenario. Claim 13 A multi-display control device according to claim 9, wherein when the main PC requests each of the plurality of sub PCs to transmit a signal corresponding to a unique identification ID, each of the plurality of sub PCs transmits an identification image corresponding to the unique identification ID to the display device, and the main PC checks a first image in which each identification image displayed on the screen of the plurality of display devices is captured, and checks the installation location of each of the plurality of display devices using each identification image of the first image. Claim 14 A multi-display control device according to claim 13, wherein each of the plurality of sub-PCs stores one of the identification images corresponding to a unique identification ID. Claim 15 A multiple display control device according to claim 13, wherein each of the plurality of sub PCs stores a plurality of identification images, and when the main PC requests each of the plurality of sub PCs to transmit an identification image for a different identification ID, each of the plurality of sub PCs transmits an output signal corresponding to the identification image for the identification ID requested by the main PC among the plurality of identification images stored, and each of the plurality of identification images includes information for a different identification ID. Claim 16 In claim 13, the first image includes length reference information, and the main PC is a multi-display control device that determines the relative positions between the plurality of display devices based on the length reference information.

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