Display methods, control boards, and video wall panels

Abstract

This application relates to the field of display screen technology, and provides a display method, control board, and splicing screen for a video wall. The video wall includes multiple displays connected in cascade, and each display includes a control board. The method is applied to any one of the control boards and includes: receiving a display signal sent by a target device; sending the display signal to the next-level control board and obtaining a target image corresponding to the target display based on the display signal; and controlling the target display to display the target image. All control boards in this application transmit display signals in a cascaded manner, eliminating the need for separate video signal cables from external signal sources to each display. Only a single main line is needed to connect all control boards, reducing costs and simplifying the interaction between the external signal source and the video wall. Simultaneously, each control board determines its own partition image based on the same display signal, improving the consistency and synchronization of the entire screen image.

Description

Technical Field

[0001] This application belongs to the field of display screen technology, and in particular relates to a display method, control board and splicing screen for splicing screen. Background Technology

[0002] Currently, in order to achieve the synchronous display of information from multiple sources, the technology of splicing multiple small-sized displays has emerged. For example, an ultra-wide screen with a screen aspect ratio of 32:9 can be formed by horizontally splicing two screens with an aspect ratio of 16:9, which can meet the needs of scenarios where "main content and auxiliary information" are displayed on the same screen.

[0003] However, existing technologies typically require an additional external splicing processor to control each small screen within the splicing screen individually, thereby achieving the display of the image on the splicing screen. It is evident that existing technologies suffer from high costs and cumbersome interaction. Summary of the Invention

[0004] This application provides a display method, control board, and splicing screen for a video wall, in order to solve the problems of high cost and cumbersome interaction in the prior art.

[0005] In a first aspect, embodiments of this application provide a display method for a video wall, the video wall including multiple displays cascaded sequentially, each display including a control board, the method being applied to any one of the control boards, including: Receive display signals sent by the target device; The display signal is sent to the next-level control board, and the target image corresponding to the target display screen is obtained based on the display signal; the target display screen refers to the display screen where the control board is located. Control the target display screen to show the target image.

[0006] Optionally, receiving display signals sent by the target device includes: The control board is a first-level control board and receives display signals sent by an external signal source. or, In response to the fact that the control board is not a first-level control board, it receives the display signal sent by the previous-level control board.

[0007] Optionally, the display signal can be sent to the next level control board, including: Determine the signal type of the display signal; the signal type is used to characterize whether the aspect ratio associated with the display signal matches the aspect ratio of the video wall. In response to a signal type of matching, the target display identifier of the target display screen is determined; the display identifier is used to characterize the display position of the display screen corresponding to the control board in the splicing screen. Based on the target display identifier, determine the next-level display identifier of the next-level display screen where the next-level control board is located; The display signal and the next-level display identifier will be sent to the next-level control board.

[0008] Optionally, obtaining a target image corresponding to the target display screen based on the display signal includes: The display image is extracted from the display signal; Based on the aspect ratio and target display identifier of the target display screen, a segmentation operation is performed on the display image to obtain the target image.

[0009] Optionally, obtaining a target image corresponding to the target display screen based on the display signal includes: In response to a non-matching signal type, the display image corresponding to the display signal will be determined as the target image.

[0010] Optionally, the display signal can be sent to the next level control board, including: In response to a non-matching signal type, the display signal is sent to the next-level control board so that the next-level control board can determine the display image corresponding to the display signal as the image that the next-level display screen needs to display.

[0011] Secondly, embodiments of this application provide a control board for executing the display method of a video wall as described in any of the first aspects. The video wall includes multiple displays connected in cascade, and each display includes a control board. The control board includes: The data input interface connects to the target device and is configured to receive display signals sent by the target device. The forwarding module is connected to the data input interface and configured to send display signals to the data output interface and the main control module respectively. The main control module, connected to the forwarding module, is configured to obtain the target image corresponding to the target display screen based on the display signal; the target display screen refers to the display screen where the control board is located. The data output interface connects to the forwarding module and is configured to send display signals to the next-level control board. The main control module is also configured to control the target display screen to show the target image.

[0012] Optionally, the main control module is connected to the data output interface; The main control module is also configured to determine the signal type of the display signal; in response to the signal type being a matching type, determine the target display identifier of the target display screen; based on the target display identifier, determine the next-level display identifier of the next-level display screen where the next-level control board is located; the signal type is used to characterize whether the aspect ratio associated with the display signal matches the aspect ratio of the splicing screen; the display identifier is used to characterize the display position of the display screen corresponding to the control board in the splicing screen; The data output interface is also configured to send the next-level display identifier to the next-level control board.

[0013] Optionally, the data input interface includes a digital interface and a universal serial bus interface; When the control board is a first-level control board, the digital interface is connected to an external signal source and configured to receive display signals sent by the external signal source; or, When the control board is not a first-level control board, the universal serial bus interface is connected to the previous level control board and configured to receive display signals sent by the previous level control board.

[0014] Thirdly, embodiments of this application provide a splicing screen, which is obtained by splicing multiple displays, the multiple displays being cascaded in sequence, and each display including a control board as described in any of the second aspects.

[0015] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the display method of the splicing screen as described in any one of the first aspects above.

[0016] Fifthly, embodiments of this application provide a computer program product that, when running on a control board, enables the control board to execute the splicing screen display method described in any of the first aspects above.

[0017] The beneficial effects of the embodiments in this application compared with the prior art are: This application provides a display method for a video wall, which includes multiple displays cascaded together. Each display includes a control board. Any control board receives a display signal from a target device, sends the display signal to the next-level control board, and obtains a target image corresponding to the target display based on the display signal. The target display refers to the display where the control board is located. The control board displays the target image. All control boards in this application transmit display signals in a cascaded manner, eliminating the need for separate video signal cables from external signal sources to each display. Only a single main line is needed to connect all control boards, reducing costs and simplifying the interaction between the external signal source and the video wall. Simultaneously, each control board synchronously forwards the display signal to the next-level control board and determines its own partition image based on the same display signal, improving the consistency and synchronization of the entire screen. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a splicing screen provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a control board provided in one embodiment of this application; Figure 3 This is a schematic diagram of the specific structure of a control board provided in one embodiment of this application; Figure 4 This is a flowchart illustrating the implementation of a splicing screen display method according to an embodiment of this application; Figure 5 This is a flowchart illustrating the implementation of a splicing screen display method according to another embodiment of this application; Figure 6 This is a schematic diagram of the structure of a splicing screen display device provided in an embodiment of this application. Detailed Implementation

[0020] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0021] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0022] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0023] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0024] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0026] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a video wall provided in one embodiment of this application. Figure 1 As shown, the splicing screen 1 can be connected to an external signal source 2 to display the display image corresponding to the display signal sent by the external signal source 2.

[0027] External signal source 2 includes, but is not limited to: computer signal sources and multimedia playback devices.

[0028] In practical applications, computer-related signal sources include, but are not limited to: desktop computers, industrial control hosts, and mobile signal sources (such as laptops) that can be used for temporary screen projection.

[0029] Multimedia playback devices include, but are not limited to: video players, set-top boxes, and TV boxes.

[0030] Please continue reading. Figure 1 The video wall 1 may include multiple displays 10, and each display 10 may include a control board 11. The multiple displays 10 are cascaded in sequence.

[0031] It should be noted that cascading refers to a connection method in which multiple devices with the same function are connected in series, with the output port of the previous device connected to the input port of the next device, and the signal is transmitted and flowed sequentially from front to back.

[0032] It should be understood that multiple displays 10 can be cascaded in the following way: the control boards 11 of multiple displays 10 are connected in a head-to-tail cascade manner, that is, the output port of the control board 11 in the upper-level display is connected to the input port of the control board 11 in the lower-level display.

[0033] It should be noted that all the displays have the same aspect ratio.

[0034] In this embodiment of the application, the first-level control board in the first-level display screen can be connected to the external signal source 2 to obtain the display signal sent by the external signal source 2.

[0035] After receiving the display signal sent by the external signal source 2, the first-level control board can directly send the display signal to the next-level control board. At the same time, the first-level control board can obtain the image that the first-level display screen needs to display based on the display signal and control the first-level display screen to display the corresponding image.

[0036] At the same time, after receiving the display signal sent by the first-level control board, the next-level control board can also send the display signal to the next-next-level control board. The next-level control board can then obtain the image that the next-level display screen needs to display based on the display signal and control the next-level display screen to display the corresponding image.

[0037] The next level control board continues to execute the above process until all the displays 10 in the splicing screen 1 have displayed the corresponding images.

[0038] As can be seen, at the beginning of the upper-level control board obtaining the image that the corresponding display screen 10 needs to display based on the display signal, the upper-level control board simultaneously sends the display signal to the lower-level control board. This allows the lower-level control board to obtain the image that the corresponding display screen 10 needs to display based on the display signal almost simultaneously with the upper-level control board, greatly reducing the synchronous display delay. This enables each display screen 10 in the splicing screen 1 to display the corresponding image almost synchronously, thereby improving the display synchronization of each display screen 10 in the splicing screen 1.

[0039] It should be noted that the specific implementation process of the first-level control board and the next-level control board controlling the corresponding display screen 10 to display the corresponding image based on the display signal can be found in the following reference: Figures 4-5 The display method of the splicing screen described in any of the above will not be elaborated here.

[0040] In one embodiment of this application, please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a control board provided in one embodiment of this application. Figure 2 As shown, each control board 11 may include: a data input interface 111, a forwarding module 112, a main control module 113, and a data output interface 114. The data input interface 111 is connected to the forwarding module 112 and the main control module 113, respectively. The forwarding module 112 is connected to the main control module 113 and the data output interface 114.

[0041] It should be noted that, Figure 2 The fact that the control board 11 is not displayed on the corresponding display screen 10 is only for the purpose of describing the specific structure of the control board 11 in detail, and has no other meaning.

[0042] Specifically, the data input interface 111 is configured to receive display signals sent by the target device.

[0043] The forwarding module 112 is configured to send the display signal to the data output interface 114 and the main control module 113 respectively.

[0044] The main control module 113 is configured to obtain the target image corresponding to the target display screen based on the display signal.

[0045] Data output interface 114 is configured to send display signals to the next level control board.

[0046] The main control module 113 is also configured to control the corresponding target display screen to display the target image.

[0047] It should be noted that the specific working processes of the aforementioned data input interface 111, forwarding module 112, main control module 113, and data output interface 114 can be found in the following documents: Figures 4-5 The display method of the splicing screen described in any of the above will not be elaborated here.

[0048] It should be understood that the corresponding target display screen specifically refers to: the control board 11 where the main control module 113 is located, and the display screen 10 where it is located.

[0049] In this embodiment, the forwarding module 112 can be an existing Switch chip.

[0050] Based on this, the synchronization delay of the splicing screen 1 can be less than 1ms.

[0051] The main control module 113 can be an ARM control module.

[0052] Among them, the ARM control module is a main control unit with an ARM architecture embedded processor as its core.

[0053] It should be noted that the ARM control module can integrate multiple functional modules, such as CPU, GPU, memory controller, and communication interface.

[0054] The data output interface 114 can be connected to the input terminal of the next-level control board (i.e., the data input interface of the next-level control board) so that the display signal can be sent to the next-level control board.

[0055] In this embodiment, the target display screen refers to Figure 2 The control board 11 shown is located on the display screen 10.

[0056] In another embodiment of this application, please refer to [link / reference]. Figure 2 The main control module 113 can also be connected to the data output interface 114.

[0057] In this embodiment, the main control module 113 is also configured to determine the signal type of the display signal; in response to the signal type being a matching type, determine the target display identifier of the target display screen; and based on the target display identifier, determine the next-level display identifier of the next-level display screen where the next-level control board is located.

[0058] The data output interface 114 is also configured to send the next-level display identifier to the next-level control board.

[0059] The signal type is used to characterize whether the aspect ratio associated with the display signal matches the aspect ratio of the video wall 1. The display identifier is used to indicate the display position of the display screen 10 corresponding to the control board 11 in the splicing screen 1.

[0060] It should be noted that the specific implementation process of the aforementioned main control module 113 can be found in the following reference: Figure 5 The display method of the splicing screen will not be described in detail here.

[0061] In another embodiment of this application, please refer to Figure 3 , Figure 3 This is a schematic diagram of the specific structure of a control board provided in one embodiment of this application. For example... Figure 3 As shown, the data input interface 111 in the control board 11 may include a digital interface and a universal serial bus interface.

[0062] It should be noted that, Figure 3 The fact that the control board 11 is not displayed on the corresponding display screen 10 is only for the purpose of describing the specific structure of the control board 11 in detail, and has no other meaning.

[0063] In this embodiment, the digital interface refers to the hardware interface that uses digital signals (0 / 1 binary encoded data stream) to transmit audio, video, and data.

[0064] In some possible embodiments, the digital interface includes, but is not limited to, High Definition Multimedia Interface (HDMI) and Digital Video Interface (DisplayPort, DP).

[0065] In practical applications, Universal Serial Bus (USB) is an industry-standard serial bus and input / output interface technology specification. Key features of USB include support for hot-swapping and plug-and-play, allowing users to safely connect or disconnect peripherals while the device is running without requiring a system restart.

[0066] In this embodiment, the universal serial bus interface includes, but is not limited to, USB interface and USB Type-C interface.

[0067] In some possible embodiments, the data output interface 114 may be a universal serial bus interface.

[0068] Please continue reading. Figure 3 In this embodiment, when the control board 11 is the first-level control board, that is, the input terminal of the control board 11 is connected to the external signal source 2, that is, the target device connected to the input terminal of the control board 11 is the external signal source 2. Therefore, the control board 11 can connect to the external signal source 2 through the digital interface and receive the display signal sent by the external signal source 2 through the data interface.

[0069] In some possible embodiments, when the control board 11 is a first-level control board, the control board 11 can also connect to the external signal source 2 through the universal serial bus interface and receive the display signal sent by the external signal source 2 through the universal serial bus interface.

[0070] When the control board 11 is not a first-level control board, that is, when the input terminal of the control board 11 is connected to the previous level control board, the control board 11 can connect to the previous level control board through the universal serial bus interface and receive the display signal sent by the previous level control board through the universal serial bus interface.

[0071] In this embodiment, please continue to refer to Figure 3When control board 11 is the first-level control board, the digital interface in control board 11 can receive the display signal sent by external signal source 2 via HDMI cable. Then, the digital interface can send the display signal to forwarding module 112 via HDMI cable. Forwarding module 112 can simultaneously send the display signal to main control module 113 and data output interface 114 via HDMI cable. After determining the next-level display identifier, main control module 113 can send the next-level display identifier to universal serial bus interface 114 via USB cable.

[0072] When control board 11 is not a first-level control board, the universal serial bus interface at the input terminal of control board 11 can receive display signals sent by the previous-level control board via an HDMI cable. Then, the universal serial bus interface can send the display signals to the forwarding module 112 via the HDMI cable, and send the next-level display identifier sent by the previous-level control board to the main control module 113 via a USB cable. The forwarding module 112 can simultaneously send the display signals to the main control module 113 and the data output interface 114 via the HDMI cable. After determining the next-next-level display identifier, the main control module 113 can send the next-next-level display identifier to the data output interface 114 via the USB cable.

[0073] It should be noted that after the main control module 113 determines the image corresponding to the display screen 10 where the control board 11 is located, it can send the image to the corresponding display screen 10 via an HDMI cable so that the corresponding display screen 10 can display the image.

[0074] Please see Figure 4 , Figure 4 This is a flowchart illustrating the implementation of a video wall display method according to an embodiment of this application. In this embodiment, the execution entity of the video wall display method is as follows: Figures 1-3 The control board shown in any of the items.

[0075] like Figure 4 As shown, the display method of the splicing screen provided in one embodiment of this application may include S101~S103, which are described in detail below: In S101, the display signal sent by the target device is received.

[0076] In this embodiment, the control board can continuously monitor its own data input interface to identify valid signals and receive display signals sent by the target device.

[0077] It should be noted that the display signal may include the complete screen pixel data stream, global synchronization timing, and splicing array configuration parameters (such as the number of array rows and columns, single screen resolution, and screen coordinate offset value).

[0078] In one embodiment of this application, when the control board is a first-level control board, it indicates that the target device connected to the input terminal of the control board is an external signal source. Therefore, the control board can receive the display signal sent by the external signal source.

[0079] In this embodiment, the first-level control board refers to the control board that is directly connected to the external signal source and is the first to receive the display signal.

[0080] Non-first-level control boards refer to control boards that are not connected to external signal sources.

[0081] In another embodiment of this application, when the control board is not a first-level control board, it indicates that the target device connected to the input terminal of the control board is a higher-level control board. Therefore, the control board can receive the display signal sent by the higher-level control board.

[0082] In S102, the display signal is sent to the next level control board, and the target image corresponding to the target display screen is obtained based on the display signal.

[0083] In this embodiment of the application, after receiving the display signal, the control board can simultaneously send the display signal to the next-level control board cascaded with the control board and obtain the target image corresponding to the target display screen based on the display signal.

[0084] The target display screen refers to the display screen where the control board is located.

[0085] It should be noted that when the control board is the last-level control board, the control board can automatically end the display signal forwarding operation and directly obtain the target image corresponding to the target display screen based on the received display signal.

[0086] In this embodiment, when the size of the display image corresponding to the display signal matches the aspect ratio of the splicing screen, the control board can determine the segmentation size of the display image corresponding to the display signal based on the aspect ratio of the target display screen, the resolution of the target display screen, the aspect ratio of the splicing screen, and the original resolution of the display image corresponding to the display signal, and perform a segmentation operation on the display image corresponding to the display signal based on the segmentation size, thereby obtaining the target image corresponding to the target display screen.

[0087] It should be noted that since all the displays have the same aspect ratio, and the splicing screen is usually made by horizontally splicing the displays, the height of the splicing screen is the same as the height of each display. Therefore, the aspect ratio of the splicing screen can be: number of displays * width of each display : height of each display.

[0088] For example, assuming there are 2 displays and the aspect ratio of the displays is 16:9, then the aspect ratio of the splicing screen is 32:9.

[0089] Among them, a resolution corresponding to an aspect ratio of 16:9 can be 1920*1080, and a resolution corresponding to an aspect ratio of 32:9 can be 3840*1080.

[0090] In one embodiment of this application, the control board can specifically be configured as follows: Figure 5 Steps SS201~S204 shown implement step S102, as detailed below: In S201, the signal type of the display signal is determined.

[0091] In this embodiment, the control board can parse the original resolution of the display image corresponding to the display signal from the display signal, and calculate the aspect ratio of the display image corresponding to the display signal based on the original resolution. Then, the control board can compare the aspect ratio of the display image with the aspect ratio of the video wall to determine the signal type of the display signal.

[0092] Among them, the signal type is used to characterize whether the aspect ratio associated with the display signal matches the aspect ratio of the video wall.

[0093] Signal types include, but are not limited to: matched and unmatched types.

[0094] It should be noted that the matching type refers to the aspect ratio associated with the display signal, that is, the aspect ratio of the displayed image matches the aspect ratio of the splicing screen.

[0095] The mismatch type refers to the aspect ratio associated with the display signal, that is, the aspect ratio of the displayed image does not match the aspect ratio of the video wall.

[0096] In one embodiment of this application, when the control board detects that the aspect ratio of the displayed image is the same as that of the splicing screen, the control board can determine that the aspect ratio associated with the display signal matches the aspect ratio of the splicing screen, that is, the signal type of the display signal is a matching type.

[0097] In this embodiment, when the control board detects that the signal type of the display signal is a matching type, it can execute steps S202 to S204.

[0098] In another embodiment of this application, when the control board detects that the aspect ratio of the displayed image is different from that of the splicing screen, the control board can determine that the aspect ratio associated with the display signal does not match the aspect ratio of the splicing screen, that is, the signal type of the display signal is a mismatched type.

[0099] In this embodiment, when the control board detects that the signal type is a mismatch type, since the splicing screen can usually display an image with the same aspect ratio as the splicing screen, or an image with the same aspect ratio as each display screen, the control board can directly send the display signal to the next-level control board without sending the next-level display identifier corresponding to the next-level display screen. This allows the next-level control board to directly determine the display image corresponding to the display signal as the image that the next-level display screen needs to display.

[0100] In S202, in response to the signal type being a matching type, the target display identifier of the target display screen is determined.

[0101] In this embodiment, when the control board detects that the signal type of the display signal is a matching type, it indicates that the aspect ratio of the displayed image is the same as that of the splicing screen. In other words, the control board needs to segment the display image. Therefore, in order to improve the segmentation accuracy of the images to be displayed on each display screen, the control board can determine the target display identifier of the target display screen.

[0102] The display identifier is used to indicate the display position of the display screen corresponding to the control board in the splicing screen.

[0103] In some possible embodiments, the control board can determine its own target display identifier based on whether it has received a next-level display identifier sent by the target device.

[0104] In this embodiment, when the control board detects that it has not received a next-level display identifier from the target device, it indicates that the control board is a first-level control board. Therefore, the control board can determine its target display identifier as the first identifier. The first identifier indicates that the target display screen is currently positioned in the splicing screen as the first priority.

[0105] When the control board detects that it has received a next-level display identifier from the target device, it indicates that the control board is not the first-level control board. Therefore, the control board can directly identify the next-level display identifier sent by the target device as the target display identifier.

[0106] In S203, based on the target display identifier, the next-level display identifier of the next-level display screen where the next-level control board is located is determined.

[0107] In S204, the display signal and the next-level display identifier are sent to the next-level control board.

[0108] In this embodiment, the control board increments the target display identifier by one based on the target display identifier of the target display screen corresponding to the control board at this time and the cascading order between the various display screens in the splicing screen, so as to obtain the next-level display identifier of the next-level display screen where the next-level control board is located.

[0109] For example, assuming the target display identifier is 1, the next level display identifier could be 2.

[0110] Afterwards, the control board can send the display signal and the next-level display identifier to the next-level control board.

[0111] In some possible embodiments, once the control board receives the display signal, it can immediately send the display signal to the next-level control board without waiting for the determination of the next-level display identifier.

[0112] After receiving the next-level display identifier, the control board can then send that identifier to the next-level control board.

[0113] Combining steps S201 to S203, this embodiment first determines the aspect ratio, then derives the display identifier step by step, and finally sends the display signal and the next level display identifier. This enables each control board to automatically identify its own splicing position without requiring the host computer to configure coordinates for each screen. This achieves adaptive cascading addressing and forwarding of the splicing screen, effectively improving the consistency of the splicing screen and the system adaptability.

[0114] In another embodiment of this application, in conjunction with step S201, the control board can further implement the step S102 of obtaining the target image corresponding to the target display screen based on the display signal through the following steps, detailed below: In response to a non-matching signal type, the display image corresponding to the display signal will be determined as the target image.

[0115] In this embodiment, when the control board detects that the signal type is a non-matching type, since the splicing screen can usually display an image with the same aspect ratio as the splicing screen, or an image with the same aspect ratio as each display screen, the control board can directly determine the display image corresponding to the display signal as the target image.

[0116] In S103, the target display screen is controlled to display the target image.

[0117] In this embodiment of the application, after obtaining the target image, the control board can control the target display screen to display the target image.

[0118] In one embodiment of this application, in conjunction with steps S201-S202, the control board can specifically implement step S103 through the following steps, detailed below: The display image is extracted from the display signal; Based on the aspect ratio and target display identifier of the target display screen, a segmentation operation is performed on the display image to obtain the target image.

[0119] In this embodiment, the control board can decapsulate, decode, and parse the display signal, stripping away additional information such as transmission protocol data and timing synchronization data, thereby extracting the complete screen pixel data stream, and generating a display image based on the complete screen pixel data stream.

[0120] After obtaining the display image, the control board can calculate the image area corresponding to the display image on the target display screen based on the aspect ratio and target display identifier. Then, it performs pixel-level segmentation on the display image based on this image area to obtain a target image that is only adapted to the target display screen.

[0121] As can be seen from the above, the splicing screen display method provided in this application embodiment includes multiple displays, which are cascaded sequentially. Each display includes a control board. Any control board receives a display signal sent by a target device; sends the display signal to the next-level control board; and obtains a target image corresponding to the target display based on the display signal. The target display refers to the display where the control board is located. The control board displays the target image. In this application, all control boards transmit display signals in a cascaded manner, eliminating the need for external signal sources to lay video signal cables to each display. Only one main line is needed to connect all control boards, which not only reduces costs but also simplifies the interaction process between the external signal source and the splicing screen. At the same time, after receiving the display signal, each control board synchronously forwards it to the next-level control board and determines its own partition image based on the same display signal, improving the consistency and synchronization of the entire screen.

[0122] In one embodiment of this application, after the splicing screen is assembled from various displays, before the control board executes step S101, the user can control the display user interface of each display screen through the on-screen display (OSD) menu adjustment method of each display screen, and manually input the display identifier of each display screen in the user interface.

[0123] Therefore, the control board can determine the target display identifier through its own OSD menu.

[0124] Based on this, the control board does not need to perform actions such as Figure 5 The steps S203~S204 shown do not require determining the next-level display identifier, nor do they require sending the next-level display identifier to the next-level control board. It is only necessary to send the display signal to the next-level control board.

[0125] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0126] Corresponding to the splicing screen display method described in the above embodiments, Figure 6 This is a schematic diagram of the structure of a splicing screen display device according to an embodiment of this application. For ease of explanation, only the parts related to the embodiment of this application are shown. (Refer to...) Figure 6 The display device 600 of the video wall includes: a receiving unit 61, a first transmitting unit 62, and a control unit 63. Wherein: The receiving unit 61 is used to receive the display signal sent by the target device.

[0127] The first sending unit 62 is used to send the display signal to the next-level control board and obtain the target image corresponding to the target display screen based on the display signal; the target display screen refers to the display screen where the control board is located.

[0128] The control unit 63 is used to control the target display screen to display the target image.

[0129] In one embodiment of this application, the receiving unit 61 specifically includes: a first receiving subunit or a second receiving subunit. Wherein: The first receiving subunit is used to receive display signals sent by an external signal source in response to the control board being a first-level control board.

[0130] The second receiving subunit is used to receive display signals sent by the higher-level control board in response to the control board being a non-first-level control board.

[0131] In one embodiment of this application, the first sending unit 62 specifically includes: a type determination unit, a first identifier determination unit, a second identifier determination unit, and a second sending unit. Wherein: The type determination unit is used to determine the signal type of the display signal; the signal type is used to characterize whether the aspect ratio associated with the display signal matches the aspect ratio of the video wall.

[0132] The first identifier determination unit is used to determine the target display identifier of the target display screen in response to the signal type being a matching type; the display identifier is used to characterize the display position of the display screen corresponding to the control board in the splicing screen.

[0133] The second identifier determination unit is used to determine the next-level display identifier of the next-level display screen where the next-level control board is located, based on the target display identifier.

[0134] The second transmitting unit is used to send the display signal and the next-level display identifier to the next-level control board.

[0135] In one embodiment of this application, the first sending unit 62 specifically includes: an extraction unit and an execution unit. Wherein: The extraction unit is used to extract the display image from the display signal.

[0136] The execution unit is used to perform segmentation operations on the displayed image based on the aspect ratio and target display identifier of the target display screen to obtain the target image.

[0137] In one embodiment of this application, the first sending unit 62 specifically includes an image determination unit.

[0138] The image determination unit is used to determine the display image corresponding to the display signal as the target image in response to the signal type being non-matching.

[0139] In one embodiment of this application, the first sending unit 62 specifically includes a third sending unit.

[0140] The third transmitting unit is used to send the display signal to the next-level control board in response to the signal type being non-matched, so that the next-level control board can determine the display image corresponding to the display signal as the image that the next-level display screen needs to display.

[0141] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0142] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0143] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps described in the various method embodiments above.

[0144] This application provides a computer program product that, when run on a control board, enables the control board to perform the steps described in the above-described method embodiments.

[0145] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a control board, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, such as a USB flash drive, a portable hard drive, a magnetic disk, or an optical disk.

[0146] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0147] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A display method for a video wall, characterized in that, The video wall includes multiple displays, which are cascaded sequentially. Each display includes a control board. The method is applied to any one of the control boards. The method includes: Receive display signals sent by the target device; The display signal is sent to the next-level control board, and a target image corresponding to the target display screen is obtained based on the display signal; the target display screen refers to the display screen where the control board is located. Control the target display screen to display the target image.

2. The display method of the splicing screen as described in claim 1, characterized in that, The receiving of the display signal sent by the target device includes: In response to the fact that the control board is a first-level control board, it receives display signals sent by an external signal source; or, In response to the fact that the control board is not a first-level control board, it receives the display signal sent by the previous-level control board.

3. The display method for a splicing screen as described in claim 1, characterized in that, Sending the display signal to the next-level control board includes: Determine the signal type of the display signal; the signal type is used to characterize whether the aspect ratio associated with the display signal matches the aspect ratio of the video wall. In response to the signal type being a matching type, a target display identifier for the target display screen is determined; the display identifier is used to characterize the display position of the display screen corresponding to the control board in the splicing screen. Based on the target display identifier, determine the next-level display identifier of the next-level display screen where the next-level control board is located; The display signal and the next-level display identifier are sent to the next-level control board.

4. The display method of the splicing screen as described in claim 3, characterized in that, Obtaining the target image corresponding to the target display screen based on the display signal includes: The display image is extracted from the display signal; Based on the aspect ratio of the target display screen and the target display identifier, a segmentation operation is performed on the display image to obtain the target image.

5. The display method for a splicing screen as described in claim 3, characterized in that, Obtaining the target image corresponding to the target display screen based on the display signal includes: In response to the signal type being a non-matching type, the display image corresponding to the display signal is determined as the target image.

6. The display method for a splicing screen as described in claim 3, characterized in that, Sending the display signal to the next-level control board includes: In response to the signal type being a non-matching type, the display signal is sent to the next-level control board, so that the next-level control board determines the display image corresponding to the display signal as the image that the next-level display screen needs to display.

7. A control board, characterized in that, The display method for performing the video wall display as described in any one of claims 1-6, wherein the video wall display includes multiple displays cascaded sequentially, and each display includes a control board, the control board comprising: A data input interface, connected to a target device, configured to receive a display signal sent by the target device; the display signal carries a display signal. The forwarding module is connected to the data input interface and configured to send the display signal to the data output interface and the main control module respectively; The main control module is connected to the forwarding module and is configured to obtain a target image corresponding to the target display screen based on the display signal; the target display screen refers to the display screen where the control board is located. The data output interface is connected to the forwarding module and configured to send the display signal to the next-level control board. The main control module is also configured to control the target display screen to display the target image.

8. The control board as described in claim 7, characterized in that, The main control module is connected to the data output interface; The main control module is further configured to determine the signal type of the display signal; in response to the signal type being a matching type, determine the target display identifier of the target display screen; and based on the target display identifier, determine the next-level display identifier of the next-level display screen where the next-level control board is located; the signal type is used to characterize whether the aspect ratio associated with the display signal matches the aspect ratio of the splicing screen; the display identifier is used to characterize the display position of the display screen corresponding to the control board in the splicing screen; The data output interface is also configured to send the next-level display identifier to the next-level control board.

9. The control board as described in any one of claims 7-8, characterized in that, The data input interface includes a digital interface and a universal serial bus interface; When the control board is a first-level control board, the digital interface is connected to an external signal source and configured to receive display signals sent by the external signal source; or, When the control board is not the first-level control board, the universal serial bus interface is connected to the previous-level control board and configured to receive display signals sent by the previous-level control board.

10. A video wall, characterized in that, The splicing screen is formed by splicing multiple displays, and the multiple displays are cascaded in sequence. Each display includes a control board as described in any one of claims 7-9.

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