Multi-size LED box body wireless transmission method

Abstract

The invention relates to a multi-size LED box body wireless transmission method. The method comprises the following steps: responding to surrounding space information obtained in real time, and obtaining an adjacent box body judgment result; the judgment result of the adjacent box body comprises existence of the adjacent box body and non-existence of the adjacent box body; determining the working mode of the LED box body according to the judgment result of the adjacent box body; the working mode comprises a synchronous display mode and an asynchronous display mode; when the working mode of the LED box body is a synchronous display mode, completing wireless slice transmission and synchronous control display of picture data with the adjacent LED box bodies based on a wireless communication mechanism; and when the working mode of the LED box body is an asynchronous display mode, independently displaying the picture data. By adopting the method, efficient display can be carried out under a fixed layout, the display content can be flexibly adjusted in a dynamically changing environment, personalized requirements under different scenes are met, and the experience feeling of a user is improved.

Description

Technical Field

[0001] The present invention belongs to the field of LED display control, and particularly relates to a wireless transmission method for multi-size LED boxes. Background Art

[0002] With the rapid development of LED (Light Emitting Diode) display technology, a multi-LED-box collaborative display technology has emerged, which realizes display requirements through wired connections and fixed layouts.

[0003] Traditional LED display systems usually adopt a centralized control method, connecting each LED box to the main control device through physical cables, and the display content of each box is updated synchronously or asynchronously through wired transmission.

[0004] However, in the above traditional method, the installation cost of the wired transmission system is high, the wiring is complex, and it restricts the flexible movement of devices. The scalability of the system is poor. Once it is necessary to add display boxes, it is necessary to re-plan and arrange the lines, and it is difficult to adapt to the dynamic environmental requirements. As the system scale increases, it becomes more and more difficult to ensure the time synchronization accuracy between boxes, which easily leads to inconsistent display effects. Summary of the Invention

[0005] Based on this, it is necessary to provide a wireless transmission method for multi-size LED boxes that can achieve efficient wireless communication and precise synchronous display for the above technical problems.

[0006] In a first aspect, the present application provides a wireless transmission method for multi-size LED boxes, including:

[0007] Responding to the surrounding space information obtained in real time to obtain an adjacent box judgment result; the adjacent box judgment result includes the existence of adjacent boxes and the non-existence of adjacent boxes;

[0008] Determining the working mode of the LED box according to the adjacent box judgment result; the working mode includes a synchronous display mode and an asynchronous display mode;

[0009] When the working mode of the LED box is the synchronous display mode, based on the wireless communication mechanism, complete the wireless slice transmission and synchronous control display of the picture data with the mutually adjacent LED boxes;

[0010] When the working mode of the LED box is the asynchronous display mode, perform independent display on the picture data.

[0011] In one of the embodiments, based on the wireless communication mechanism, completing the wireless slice transmission and synchronous control display of the picture data with the adjacent LED boxes includes:

[0012] Generate a topology relation table based on the surrounding space information of multiple adjacent LED cabinets;

[0013] Based on the topology relation table, establish a multi-cabinet cluster in a wireless mesh network, and determine the master cabinet through a master selection algorithm to obtain a network topology table and master LED cabinet information; the network topology table includes the attributes of the LED cabinets and the corresponding adjacent information and communication paths;

[0014] Drive the master LED cabinet to calculate the display layout according to the network topology table, and split the video data to obtain multiple image frame segments;

[0015] Based on the communication paths, wirelessly transmit the multiple image frame segments to the corresponding LED cabinets and perform synchronous control display with unified clock.

[0016] In one embodiment, generating a topology relation table based on the surrounding space information of multiple adjacent LED cabinets includes:

[0017] Based on the adjacency determination algorithm, perform adjacency recognition on the surrounding space information of multiple adjacent LED cabinets to obtain an adjacent cabinet list; the adjacent cabinet list includes the unique identifier, size attribute, and relative position information of the LED cabinets;

[0018] According to the adjacency relationships of each LED cabinet in the adjacent cabinet list, obtain an adjacency matrix; the adjacency matrix includes adjacency items and connection states;

[0019] Based on the architecture of the adjacency matrix, extract the size attributes and relative position information in the adjacent cabinet list to generate a topology relation table; the topology relation table includes the unique identifier of each LED cabinet, the corresponding size attribute, adjacency items, and the relative position information corresponding to the adjacency items.

[0020] In one embodiment, based on the topology relation table, establishing a multi-cabinet cluster in a wireless mesh network and determining the master cabinet through a master selection algorithm to obtain a network topology table and master LED cabinet information includes:

[0021] Based on the status information broadcast by each LED cabinet and the corresponding topology relation table, construct a preliminary network node set;

[0022] Establish two-way wireless links for adjacent LED cabinets in the preliminary network node set to obtain a communication link set;

[0023] Through a preset master selection algorithm, label the role of each LED cabinet and synchronize the unique identifier of the master LED cabinet to all LED cabinets to obtain node role information; the node role information includes master LED cabinet information;

[0024] Generate a network topology table based on the communication link set and node role information.

[0025] In one embodiment, the driving master LED box calculates the display layout according to the network topology table, and slices the video data to obtain multiple image frame segments, including:

[0026] The master LED box obtains the attributes of each LED box and the corresponding adjacency information from the network topology table, and calculates the pixel coordinate mapping of the overall display layout; the pixel coordinate mapping includes a pixel grid and the corresponding display LED box;

[0027] Divide the video data into multiple rectangular frame segments according to the pixel grid to obtain multiple image frame segments.

[0028] In one embodiment, based on the communication path, wirelessly transmit multiple image frame segments to the corresponding LED boxes and perform synchronous control display with unified clock, including:

[0029] The driving master LED box broadcasts a synchronization request signal and receives the delay request signals replied by the corresponding display LED boxes;

[0030] Calculate the one-way delay according to the synchronization request signal and the delay request signal;

[0031] Calibrate the local clocks of the display LED boxes according to the one-way delay;

[0032] The driving master LED box downloads the image frame segments to the corresponding display LED boxes according to the global timestamp; the global timestamp is determined by the local clocks of the display LED boxes;

[0033] The display LED boxes display the corresponding image frame segments according to the global timestamp.

[0034] In one embodiment, it further includes:

[0035] Respond to the user's manual mode switching instruction to change the working mode of the LED box.

[0036] In a second aspect, the present application also provides a multi-size LED box wireless transmission device, including:

[0037] A monitoring module, configured to obtain an adjacent box judgment result in response to the surrounding space information obtained in real time;

[0038] A mode switching module, which determines the working mode of the LED box according to the adjacent box judgment result; the working modes include a synchronous display mode and an asynchronous display mode;

[0039] A synchronous wireless transmission module, which is used to complete the wireless slicing transmission and synchronous control display of picture data with adjacent LED cabinets based on a wireless communication mechanism when the working mode of the LED cabinet is the synchronous display mode;

[0040] An asynchronous display module, which is used to independently display picture data when the working mode of the LED cabinet is the asynchronous display mode.

[0041] In a third aspect, the present application also provides a computer device, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the steps of any of the above multi-size LED cabinet wireless transmission methods are implemented.

[0042] In a fourth aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above multi-size LED cabinet wireless transmission methods are implemented.

[0043] The above multi-size LED cabinet wireless transmission method realizes the adaptability and efficient expansion of LED displays in complex environments through wireless transmission and intelligent mode switching. Wireless transmission reduces the complexity of wiring, improves the convenience of expansion, and supports multiple display modes at the same time, enabling LED displays to better meet the needs of different scales and layouts. Through the synchronous control display mode, highly coordinated work between multiple LED cabinets is achieved. Wireless slicing transmission and clock synchronization technology can ensure that even in a large-scale LED array, the display effect remains consistent, and the display content will not be confused due to time delay or synchronization problems, greatly improving the stability and accuracy of the display effect. The use of a wireless communication mechanism significantly reduces the wiring cost and installation difficulty brought by traditional wired connections. At the same time, it can automatically adjust the topological structure and working mode according to spatial information, reducing the need for manual intervention and lowering the maintenance and operation costs. It can not only perform efficient display in a fixed layout but also flexibly adjust the display content in a dynamically changing environment, meeting the personalized needs in different scenarios and enhancing the user experience. Description of the Drawings

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0045] Figure 1 It is a schematic flowchart of the multi-size LED cabinet wireless transmission method of the present invention;

[0046] Figure 2 It is a schematic diagram of the sub - steps of step S103;

[0047] Figure 3 It is a schematic diagram of the sub - steps of step S202;

[0048] Figure 4 It is a composition structure diagram of the multi - size LED box wireless transmission device of the present invention. Specific embodiments

[0049] In order to make the purpose, technical solutions and advantages of the present application clearer, the following further elaborates on the present application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0050] In one embodiment, as Figure 1 shown, a multi - size LED box wireless transmission method is provided. In this embodiment, the application of this method to a terminal is taken as an example for illustration. It can be understood that this method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is realized through the interaction between the terminal and the server. In this embodiment, the method includes the following steps:

[0051] S101. In response to the surrounding space information obtained in real - time, obtain an adjacent box judgment result; the adjacent box judgment result includes the existence of an adjacent box and the non - existence of an adjacent box.

[0052] Schematically, by obtaining the physical environment where each LED box is currently located, the behavior mode of the box in display control can be determined. Specifically, obtaining the surrounding space information of the LED box refers to a comprehensive data set that can reflect information such as the position, attitude, existence of neighboring entities (i.e., other LED boxes), azimuth relationship, and relative distance of the target LED box in the current space. Schematically, the surrounding space information is derived from the environmental perception sensing module integrated in the LED box body, and this module can include, but is not limited to, various components such as infrared sensors, ultrasonic radars, millimeter - wave radars, radio - frequency identification modules (RFID), and image sensors. Exemplarily, infrared and ultrasonic are suitable for short - distance position judgment, millimeter - wave is suitable for penetration detection without being affected by light, RFID is suitable for unique identification, and the image sensor can support more complex space reconstruction and target recognition.

[0053] Furthermore, the above-mentioned sensing data is collected in a periodic or event-driven manner to form a spatial model of the current environment around the LED cabinet. In a specific implementation, it is assumed that each LED cabinet is equipped with at least two types of sensors, including a millimeter-wave radar and an RFID module. Among them, the millimeter-wave radar is responsible for detecting whether there are other physical structures in the three-dimensional space, and the azimuth and approximate distance can be judged by combining the transmitted / received data; the RFID module is used to identify the unique identification code of the adjacent cabinet to identify the adjacent LED cabinet.

[0054] Schematically, the collected surrounding space information is analyzed by an adjacency determination algorithm. The adjacency determination algorithm determines whether the adjacency relationship is established based on whether the relative distance, direction, and spatial position of the entities in the space meet the adjacency conditions. Exemplarily, when the center distance between another LED cabinet and this cabinet is less than a preset threshold, and there is a certain parallel or orthogonal docking relationship in their surface orientations, it can be determined that an adjacency relationship is formed between the two. Optionally, a machine learning method is further introduced to classify and pattern-recognize the space information to improve the accuracy and robustness of the adjacency determination.

[0055] An explicit adjacency cabinet judgment result is obtained through the adjacency determination algorithm, and this result is presented as a boolean-type status flag, that is, there is an adjacent cabinet or there is no adjacent cabinet.

[0056] The adjacency cabinet judgment result not only reflects the local space state but also is the basis for the LED display to implement the adaptive display mode selection. It determines whether the LED cabinet is in the synchronous display mode, participates in cluster collaboration, receives and displays a part of the integrated picture, or in the asynchronous mode, it should independently undertake the display task of independent content.

[0057] S102. Determine the working mode of the LED cabinet according to the adjacency cabinet judgment result; the working mode includes a synchronous display mode and an asynchronous display mode.

[0058] The control of the LED cabinet needs to determine the working mode of the current cabinet according to the adjacency cabinet judgment result. The working mode refers to the operating logic and control strategy adopted by the LED cabinet during the image data reception and display process, mainly divided into two basic types: synchronous display mode (Synchronous Display Mode) and asynchronous display mode (Asynchronous Display Mode). The switching of the working mode not only changes the role positioning of the cabinet in the entire picture display but also involves all-round differences in the network communication structure, picture data processing method, and display timing.

[0059] Schematically, if the determination result is that there are adjacent boxes, it indicates that the current LED box is in a local space set composed of multiple display units, and there is a physical spatial connection between them. That is, multiple boxes should be regarded as a display whole to jointly present a unified picture content. Based on this logic, the box is automatically switched to the synchronous display mode. In this mode, the box will no longer operate independently, but needs to achieve the collaborative segmentation, distribution, and unified timing control of the picture data with adjacent boxes through a wireless communication network to ensure the coherence and consistency of the overall picture in both the spatial and temporal dimensions. On the contrary, if the determination result of adjacent boxes is that there are no adjacent boxes, it indicates that the current LED box is in an independent space state and does not form an adjacent or cluster structure in the physical sense with other boxes. In this case, the box is automatically set to the asynchronous display mode. In this mode, the LED box will completely execute the display task according to the picture data configured by itself without the need for data exchange or timing coordination with external units, and the display content can have independent and personalized characteristics, which is suitable for scenarios such as information release, signboards, or small displays.

[0060] Furthermore, this mode switching mechanism has real-time and self-adaptive capabilities. Based on continuously listening to new results from the adjacent determination module, once it detects a change in the adjacent state, such as the addition of a new adjacent box or the disconnection of an adjacent relationship, the working mode will be re-evaluated and updated in a timely manner according to the new adjacent state to ensure stable operation and self-organization capabilities in a dynamic environment.

[0061] Exemplarily, if the number of adjacent boxes is greater than or equal to 1, enter the synchronous display mode; otherwise, maintain or switch to the asynchronous display mode. Optionally, to avoid instability caused by frequent switching, a threshold stability mechanism can be introduced into the mode switching logic, that is, perform the mode change operation after continuously detecting the stable adjacent state for a certain period of time to filter out misjudgments caused by jitter or instantaneous interference.

[0062] In summary, through the strategy of dynamically determining the working mode based on the adjacent judgment result, the LED box can automatically adapt to different operation requirements according to its own environment, which not only improves the degree of intelligence but also significantly simplifies the manual configuration work in the user deployment process, laying a solid foundation for subsequent data transmission and picture control.

[0063] S103. When the working mode of the LED box is the synchronous display mode, based on the wireless communication mechanism, complete the wireless slice transmission and synchronous control display of the picture data with the mutually adjacent LED boxes.

[0064] When the LED cabinet is set to the synchronous display mode, it means that it no longer undertakes the display task alone, but needs to jointly form a logically continuous display whole with other adjacent LED cabinets. To achieve such cross-device and cross-node collaborative presentation of the picture, it is necessary to solve the reasonable slicing and distribution of the picture data, as well as the unified display timing between devices. For this purpose, this technical solution designs a complete set of picture synchronous transmission and control processes for the wireless mesh network environment based on the wireless communication mechanism.

[0065] Schematically, after the LED cabinet enters the synchronous display mode, all LED cabinets participating in the display cluster need to announce their own status information in the form of short-time broadcast, including the unique identifier, physical size, current coordinate information, and adjacency relationship status. This broadcast behavior can be implemented based on Wi-Fi, Zigbee, or other wireless protocols that support low-latency multi-hop communication, so that all cabinet nodes can maintain a basically consistent view of the spatial layout locally. Further, using the establishment mechanism of the adjacency cabinet judgment logic and the topology relationship table, a topology relationship table containing all mutually adjacent LED cabinet nodes is dynamically generated. The basic unit of the topology relationship table includes the unique identifier of the LED cabinet, its physical size information, adjacency item annotation, and relative position information.

[0066] Based on this topology relationship table, these adjacent cabinets are organized into a display cluster using a clustered logic. To enable unified control points for picture distribution, a master selection mechanism is introduced to determine the master LED cabinet (Master Node), which will undertake core tasks such as picture data reception, content segmentation, distribution scheduling, and timing control. The master selection algorithm can be implemented according to various strategies, including the principle of the most central physical position, the principle of the largest signal strength first, or the principle of the smallest unique node number first. Once the master node is confirmed, its identification information will be synchronously broadcast to all LED cabinets in the entire cluster, so that each node can clearly identify the control center of the current cluster. Further, after the master LED cabinet obtains the complete network topology structure and node information, it starts to execute the picture slicing and data scheduling process. The master node will combine the image data it holds with the node size and position information in the network topology table, calculate the pixel occupancy area of each LED cabinet in the overall picture, and establish a pixel coordinate mapping table, which clearly indicates which physical LED cabinet node should be responsible for displaying each image area. Based on this mapping table, the picture data will be divided into several image frame fragments (Frame Fragments), and the size and resolution of each fragment are strictly aligned with the display area of the target cabinet, ensuring that the spliced picture is coherent and error-free.

[0067] After the generation of image frame segments is completed, based on the communication paths marked in the topology relation table, the master node sends each image segment to its corresponding display node via a wireless network in a multi-hop or broadcast manner. During this process, the stability and latency of the communication link are dynamically evaluated, and the optimal path is automatically selected for segment transmission to ensure that the picture is distributed in a timely manner among all nodes. Due to the inherent uncertainty of wireless communication latency, without a unified timing mechanism, there will be errors in the time points when each LED cabinet displays the image, resulting in the entire picture jumping or misaligning. Therefore, a synchronization control mechanism based on a global timestamp is introduced. The master node broadcasts a synchronization request signal, and after receiving it, each LED cabinet immediately returns a delay response signal with local clock information. Based on this, the one-way latency of each communication link is calculated, and the local clocks of each node are compensated and calibrated. After the calibration is completed, the master node issues a display instruction according to the unified global timestamp, and all cabinets display their respective image segments strictly at the same moment, thus achieving synchronous picture control with millisecond-level accuracy.

[0068] Exemplarily, in a certain exhibition hall, there are 8 LED display cabinets of different specifications. After detecting that they are physically adjacent and form a rectangular display array, they will be automatically formed into a display cluster. An LED cabinet at a central position in the cluster is set as the master node, which slices the entire exhibition hall promotional picture into 8 image segments and accurately distributes each segment to the target cabinet through the Wi-Fi Mesh protocol. After being coordinated by the synchronization mechanism, seamless picture display is achieved on the entire wall, greatly enhancing the immersion and professionalism of spatial information presentation.

[0069] In summary, through the construction of a wireless mesh structure, master node election, image slicing distribution, and time synchronization mechanism, this step not only realizes the collaborative wireless transmission ability of multiple cabinets but also achieves high-precision synchronous display under extremely low network load, providing a highly adaptable wireless solution for complex display scenarios.

[0070] S104. When the working mode of the LED cabinet is the asynchronous display mode, the picture data is independently displayed.

[0071] When the working mode of the LED cabinet is the asynchronous display mode, the LED cabinet is an independent display terminal and does not form a unified display cluster with any adjacent cabinets around it. In this mode, the scope of data processing is completely limited to the reception, decoding, and display control of the picture content of the current LED cabinet itself, providing a flexible and low-coupling working state to adapt to complex usage scenarios such as individual device deployment, temporary splicing, or unstable edge nodes.

[0072] Schematically, the enabling of the asynchronous display mode usually means that there are indeed no other LED cabinets available for adjacency in the physical space, or it may also be that the user manually sets it so that even if there are adjacent cabinets, the LED cabinet is configured to the asynchronous display mode.

[0073] In the asynchronous display mode, the LED cabinet will directly obtain the picture data from the host computer system, server or local storage medium, and will no longer accept any slice instructions or synchronization requests from surrounding nodes. The source methods of the picture data can be in various forms such as network download, local cache, USB flash drive import, or pushed by a mobile device through Bluetooth, Wi-Fi direct connection, etc., and the specific selection is based on the user's deployment plan. Once the picture data reaches the LED cabinet, the cabinet will call its locally built-in image processing unit to perform processing operations such as decoding, scaling, color mapping, and frame buffer filling on the received data, and transmit the processing result to the display control circuit in real time to complete the image presentation.

[0074] Since in the asynchronous mode, the LED cabinet no longer depends on the external node time reference, its frame display scheduling is completely driven by the local clock. Optionally, to ensure smooth display, its built-in play buffer is used to ensure that even in the case of network fluctuations or short-term signal interruptions, the picture can be stably output through the buffering mechanism. Further, the user can preset the display task schedule, such as rotating images, playing videos at a fixed time, or displaying specific pictures according to sensor-triggered events, so that the asynchronous mode has greater flexibility in adapting to scenarios.

[0075] The introduction of the asynchronous display mode is not only an important supplement to the synchronous mode, but also reflects the adaptive ability of the LED light box when facing non-ideal deployment structures. By enclosing the display task within a single node for internal processing, a plug-and-play, control-and-display-immediately lightweight operation mode is achieved, providing extremely high flexibility and stability support for application scenarios such as mobile deployment, decentralized display, and temporary layout.

[0076] In the above multi-size LED cabinet wireless transmission method, by obtaining the surrounding space information in real time and judging the status of adjacent cabinets based on this information, it can dynamically adapt to different display environments and automatically adjust the working mode according to the actual spatial layout changes, thereby improving the flexibility and adaptability of LED displays. Deciding the working mode of the LED cabinet according to the judgment result of the adjacent cabinet ensures that the most suitable working method can be flexibly selected under different display requirements and environments, avoiding problems such as resource waste or inconsistent display that may be caused by a fixed working mode. In the synchronous display mode, wireless slice transmission of picture data between multiple LED cabinets is achieved through a wireless communication mechanism, and the display is synchronously controlled. This feature enables multiple LED cabinets to jointly present a consistent display effect, avoiding possible synchronization errors in traditional wired connections and enhancing the overall consistency of the display effect. When the working mode is asynchronous display, different contents can be independently displayed on each LED cabinet. This flexibility enables LED displays to handle diverse application scenarios, such as advertising displays and split-screen display requirements.

[0077] In one embodiment, as Figure 2 shown, based on the wireless communication mechanism, wireless slice transmission of picture data and synchronous control display with adjacent LED cabinets are completed, including:

[0078] S201. Generate a topology relation table according to the surrounding space information of multiple mutually adjacent LED cabinets.

[0079] Schematically, by obtaining the surrounding space information of multiple mutually adjacent LED cabinets, a structured spatial relationship mapping is established to judge the relative position of each cabinet in the entire LED structure, and then a topology relation table is generated. The topology relation table not only identifies the unique identity (ID) and position information of each cabinet, but also details the adjacent cabinet nodes it is connected to, forming a two-dimensional or three-dimensional spatial network map, laying a foundation for subsequent data organization and path planning.

[0080] S202. Based on the topology relation table, establish a multi-cabinet cluster in the wireless mesh network, and determine the master cabinet through a master election algorithm to obtain the network topology table and master LED cabinet information; the network topology table includes the attributes of the LED cabinet and the corresponding adjacent information and communication paths.

[0081] Based on the topological relationship table, a logical communication cluster is dynamically established among multiple LED cabinets through a wireless mesh network. Schematically, the establishment of the wireless mesh network relies on wireless communication modules such as Zigbee, Wi-Fi Mesh, or low-power Bluetooth BLE Mesh embedded in each LED cabinet. In the startup phase, they automatically enter the broadcast discovery state and form a node interconnection structure based on the actual physical location through handshake communication with neighboring nodes and signal strength matching. On top of this network structure, a master selection algorithm is further executed to determine the master cabinet within a cluster. The master selection algorithm can be selected based on various strategies, such as position centrality, computing power priority, power supply stability, or preset weight values, to ensure that the master cabinet has sufficient stability and scheduling capabilities.

[0082] After the master selection process is completed, a network topology table and master LED cabinet information are generated. The network topology table not only contains the attributes of each LED cabinet, namely ID, location, size, module version, etc., but also includes the adjacency relationship between each cabinet and other nodes, as well as the multi-hop communication paths reachable through the wireless path, thus providing an accurate network guide for the master cabinet to distribute data and control signaling.

[0083] S203. Drive the master LED cabinet to calculate the display layout according to the network topology table and slice the video data to obtain multiple image frame segments.

[0084] Schematically, drive the selected master LED cabinet to calculate the spatial layout of the entire display area according to the node structure recorded in the network topology table, so as to determine the relative position of each cabinet in the final spliced image and the content of the sub-region to be displayed. Subsequently, the master cabinet performs spatial slicing on the overall image data according to the preset target image, dividing it into multiple image frame segments, and each image frame segment corresponds to the display task of a specific LED cabinet. The slicing process is usually completed by using the image matrix division method or the GPU-level graphics segmentation method to ensure that each segment of video data has accurate resolution, color channel information, and frame sequence identification.

[0085] S204. Based on the communication path, send multiple image frame segments to the corresponding LED cabinets through wireless transmission and perform synchronous control display with unified clock.

[0086] Schematically, based on the pre-determined communication paths in the network topology table, the segmented image frame fragments are sent to the corresponding LED cabinets via wireless links. Due to certain delays and uncertainties in the wireless transmission process, to ensure that the final video display can maintain timing consistency, a unified clock synchronization mechanism will be triggered after the data is sent. This mechanism can broadcast a unified timestamp signal through the master cabinet, or use the IEEE 1588 Precision Time Protocol (PTP) to distribute synchronization signals in the network, so that all participating nodes can complete the video loading and refreshing at the same moment, realizing seamless edge stitching of multi-node videos and consistent animation logic. Further, during the transmission of the image frame fragments, congestion control and redundancy error correction mechanisms can be adopted according to the network status to ensure the integrity and stability of the transmitted data and improve the robustness of the video display.

[0087] Exemplarily, in a public exhibition venue, a cluster of LED cabinets arranged in a 4x3 pattern is deployed. The edge computing device combines cameras and ranging modules to collect the three-dimensional spatial data of each cabinet and generates an initial topology relation table; a communication cluster between cabinets is established through Wi-Fi Mesh connection, and a cabinet in the middle position is automatically selected as the master node; the master node downloads the target display video and slices it, distributes the data frame by frame to the cabinets at the corresponding positions, and realizes millisecond-level frame synchronization through local wireless broadcast, finally enabling the audience to visually see a complete, unified, and dynamically tear-free large video content.

[0088] The above method constructs a complete set of mechanisms for multi-LED cabinet collaborative work, from spatial information modeling, network structure construction, master control logic assignment to data synchronization rendering, which not only improves the scalability and flexible deployment capabilities, but also effectively guarantees the consistency and display quality in large-scale display splicing tasks, and is the core component of the technical solution to achieve wireless collaborative display.

[0089] In one embodiment, generating a topology relation table according to the surrounding space information of multiple adjacent LED cabinets includes:

[0090] S31. Based on the adjacency determination algorithm, perform adjacency recognition on the surrounding space information of multiple adjacent LED cabinets to obtain an adjacency cabinet list; the adjacency cabinet list includes the unique identifier, size attribute, and relative position information of the LED cabinet.

[0091] Schematically, with each LED cabinet as the center, an adjacency recognition model is established for the surrounding space, and an adjacency determination algorithm is executed to determine which cabinets form a physically adjacent relationship with the current cabinet. Adjacency means that two cabinets have a relationship of directly contacting boundaries in physical installation, usually in a side-by-side, corner-to-corner or close splicing state. Each LED cabinet constructs a list of adjacent cabinets in the local control module, and this list records the unique identifiers (IDs), geometric dimension attributes, and relative position relationships of all adjacent cabinets that can be detected by the current cabinet.

[0092] S32. According to the adjacency relationships of each LED cabinet in the list of adjacent cabinets, an adjacency matrix is obtained; the adjacency matrix includes adjacency items and connection states.

[0093] Schematically, the adjacency information of all LED cabinets is uniformly summarized, and an adjacency matrix is constructed in a structured manner. The adjacency matrix is essentially a two-dimensional array structure with LED cabinets as nodes and adjacency relationships as edges, used to express the connection states between each pair of cabinets. In this matrix, the rows and columns respectively correspond to the unique identifiers of all LED cabinets, and each item in the matrix records whether the pair of nodes is adjacent and the connection method. By constructing the adjacency matrix, it is possible to quickly and batch-determine all adjacent objects of a certain node, as well as whether there are isolated or disconnected nodes in the network, thus providing a basic guarantee for the continuity and consistency verification of the topological graph.

[0094] S33. Based on the architecture of the adjacency matrix, the dimension attributes and relative position information in the list of adjacent cabinets are extracted to generate a topological relationship table; the topological relationship table includes the unique identifiers of each LED cabinet, the corresponding dimension attributes, adjacency items, and the relative position information corresponding to the adjacency items.

[0095] Further, extract the adjacency relationships recorded in the adjacency matrix, and combine the size attributes and relative position information of each adjacent box to generate a complete topological relationship table. This topological relationship table is a description dataset at the spatial structure level, including the unique identifier of each LED box, its geometric size information, the corresponding adjacent items, i.e., the set of IDs of the connected LED boxes, and the relative position information corresponding to each adjacent item, such as "above", "right", or "rear" relative to the current box, to express the spatial connectivity and reflect the position arrangement rules between the boxes, which helps to construct the logical mapping model of the overall display screen. Exemplarily, in a 3x3 LED box display system, if the ID of a certain box is L05, its adjacent boxes are L02 (above), L04 (left), L06 (right), and L08 (below), and the sizes of the adjacent boxes are 500mm×500mm and 400mm×500mm, then the L05 node will be recorded as the main node in the topological relationship table, and the adjacent items are L02, L04, L06, and L08, and their relative positions correspond to "up", "left", "right", and "down" in sequence. This structure not only provides a basis for the picture slicing logic but also provides spatial guidance information for the subsequent construction of the wireless communication route and the synchronous display mechanism.

[0096] In one embodiment, as Figure 3 shown, based on the topological relationship table, establish a multi-box cluster in the wireless mesh network, and determine the master box through the master selection algorithm to obtain the network topological table and the information of the master LED box, including:

[0097] S301. Based on the broadcast status information of each LED box and the corresponding topological relationship table, construct a preliminary network node set.

[0098] Schematically, based on the broadcast mechanism of each LED box, start the information announcement protocol within the local area. After each LED box is started, it will periodically broadcast its own status information, including parameters such as the unique identifier of the box, the topological relationship table, hardware capabilities, remaining power, and signal strength. The adjacent LED boxes will incorporate this broadcast information into their local status caches after receiving it, thus gradually converging to form a preliminary network node set, representing a cluster of LED boxes that are communicatively reachable and have topological recognition capabilities within a certain local space, providing a prerequisite for subsequent link connection and role assignment.

[0099] S302. Establish two-way wireless links for the adjacent LED boxes in the preliminary network node set to obtain a communication link set.

[0100] Schematically, based on the mutual awareness information in the preliminary node set, the wireless link establishment operation is started. Specifically, relying on a two-way handshake mechanism, that is, each pair of adjacent LED cabinets needs to complete two rounds of communication confirmation, including sending a connection request and receiving an acknowledgment response. Only after the two-way communication is stably established, this node pair is considered to have a valid link. Further, all successfully established links are recorded as a communication link set, and each item in the set records the two node identifiers connected, communication quality indicators, link stability levels, etc., to reflect the real physical communication paths existing in the network and lay a foundation for subsequent data routing and synchronization scheduling.

[0101] S303. Through a preset master selection algorithm, label the role of each LED cabinet, and synchronize the unique identifier of the master LED cabinet to all LED cabinets to obtain node role information; the node role information includes the master LED cabinet information.

[0102] To form a unified control center, each LED cabinet is labeled as a master node or a slave node. Schematically, it is automatically completed through a preset master selection algorithm. The master selection algorithm can be in various forms, including: the master selection method based on weight scoring, that is, comprehensively scoring by combining indicators such as the computing performance, remaining power, and central position of the node; the master selection method based on connectivity, that is, selecting the cabinet with the most adjacent nodes as the master node; the algorithm based on topological centrality, that is, calculating the node with the smallest propagation distance in the network as the master center. By selecting an LED cabinet with the optimal advantages in terms of topology and performance as the master, synchronize the unique identifier of this master node itself to all LED cabinets in the cluster through wireless broadcasting. At the same time, generate node role information.

[0103] S304. Generate a network topology table according to the communication link set and the node role information.

[0104] Based on the communication link set and the node role information, comprehensively generate a network topology table, which completely records the attribute information, role information, adjacent nodes, and all actually reachable communication paths of each LED cabinet. The network topology table not only reflects the physical splicing structure and communication connectivity, but also carries the spatial organization and logical scheduling capabilities of the display resources.

[0105] Exemplarily, in a cluster composed of 9 LED cabinets, the L05 cabinet located at the geometric center position is selected as the master node, then in the network topology table, its identity is marked as the master role, and the communication link information in four directions, namely L02, L04, L06, and L08, is recorded. At the same time, nodes such as L02 are marked as slave roles and each records its adjacent status and the path information to the master. Through this topology table, key control logics such as who is responsible for image slicing, who receives data, and who synchronizes the clock can be clarified to ensure the coordination of the entire screen.

[0106] In one embodiment, the driving master LED box calculates the display layout according to the network topology table and slices the video data to obtain multiple image frame segments, including:

[0107] S41. The master LED box obtains the attributes of each LED box and the corresponding adjacency information from the network topology table, and calculates the pixel coordinate mapping of the overall display layout; the pixel coordinate mapping includes a pixel grid and the corresponding display LED box.

[0108] The master LED box first obtains all the LED box node information participating in the display from the generated network topology table, including but not limited to the unique identifier, physical size, relative spatial position information, and adjacency relationship of each LED box. These structural information are transformed into a logical splicing framework inside the master box to form a logically overall display layout model. To achieve continuous image projection across LED boxes, the master box constructs a complete pixel-level coordinate mapping matrix, which regards the display area as a unified two-dimensional pixel grid and marks the target LED box to which each pixel belongs in the grid. Among them, the establishment process of the pixel coordinate mapping includes generating a logical pixel grid and marking pixel attribution information. Specifically, according to the size information of all LED boxes in the topology table, the total pixel width and height after overall splicing can be calculated, and then a two-dimensional pixel coordinate system with a unified resolution can be constructed. Exemplarily, if 3 LED boxes with a size of 640×480 are spliced horizontally, the total width is 1920 pixels, the height is 480 pixels, and the pixel grid range is from (0,0) to (1919,479). Based on the relative positions of each LED box in the splicing structure, calculate the starting pixel coordinate interval of each LED box in the entire logical picture, and attribute the pixels within this area to the corresponding box. Exemplarily, the LED box numbered L02 is in the second column, and its pixel interval is from 640 to 1279 in the abscissa and from 0 to 479 in the ordinate, corresponding to the second image area in the picture.

[0109] S42. Divide the video data into multiple rectangular frame segments according to the pixel grid to obtain multiple image frame segments.

[0110] Based on the constructed pixel coordinate mapping table, the master control LED box divides the complete picture data into rectangular regions. The overall image is regarded as a large canvas to be processed, and according to the pixel intervals of each LED box, it is divided into several rectangular regions. Each rectangular region corresponds to an image frame segment that the target LED box should display. Schematically, the splitting process adopts an interception method based on pixel coordinates. For each LED box, within its corresponding pixel interval, pixel blocks of the corresponding rectangular region are intercepted from the original image data to form separate image frame segments. The image frame segments can be stored in standard image formats such as JPEG and PNG or in a custom compression format, taking into account both transmission efficiency and display accuracy.

[0111] Exemplarily, the picture is 1920×480 pixels, and the three spliced LED boxes are numbered L01, L02, and L03 respectively, and the size of each box is 640×480 pixels. Then the picture is divided into three parts horizontally: L01 is responsible for displaying the area (0–639,0–479); L02 is responsible for displaying the area (640–1279,0–479); L03 is responsible for displaying the area (1280–1919,0–479). The master control LED box completes the cropping process of these three image regions locally and generates three image frame segments, which are correspondingly prepared to be sent to the three LED boxes L01, L02, and L03. Each frame segment is attached with the unique identifier of the target LED box and a synchronization control mark, which are used to guide the receiving node to perform accurate image rendering and time alignment.

[0112] The above method completes the regional attribution and content cropping of the image in both logical and physical dimensions, realizing an efficient conversion from a globally unified image to locally independent display content. The whole process is characterized by automation, scalability, and strong spatial awareness, and can adapt to LED box combinations with any number and arrangement structures, ensuring the visual continuity and interaction accuracy of the spliced picture.

[0113] In one embodiment, based on the communication path, multiple image frame segments are sent to the corresponding LED boxes through wireless transmission and synchronized control display with unified clock is performed, including:

[0114] S51. Drive the master control LED box to broadcast a synchronization request signal and receive the delay request signals replied by the corresponding display LED boxes.

[0115] The master LED cabinet first sends a synchronization request signal to each known display LED cabinet through a wireless communication mechanism. The signal carries a precisely generated timestamp to record the current local time of the master LED cabinet, thereby establishing a reference starting point for time synchronization. At the same time, each LED cabinet that receives the synchronization request signal immediately generates a delay request signal and sends it back to the master LED cabinet, with the local reception timestamp information in the response. This starts the two-way handshake process in the communication link, providing a data basis for subsequent delay calculations.

[0116] S52: Calculate a one-way delay according to the synchronization request signal and the delay request signal.

[0117] The master control LED cabinet calculates the one-way delay between the master and slave nodes based on the received delay request signal. Schematically, the delay calculation adopts a symmetric delay model, which assumes that the transmission delay of the wireless transmission link in the forward and reverse directions is basically the same. Therefore, the one-way delay can be approximated to be half of the two-way delay. The calculation formula is Among them, T request The local timestamp for sending synchronization request signal to the main control LED cabinet; T response The local timestamp when the master LED cabinet receives the delay request signal.

[0118] S53, calibrating the local clock of each display LED box according to the one-way delay.

[0119] The master control LED cabinet uses the delay data obtained in the previous step to assign calibration factors to each display LED cabinet. Specifically, the master control cabinet will generate a clock calibration instruction to instruct the target LED cabinet to offset its local time base so that its logical clock is consistent with the master control time. After receiving the instruction, each LED cabinet will fine-tune the internal system clock according to the calibration offset contained in it to ensure that the display of all subsequent frame segments can be executed based on a consistent time base.

[0120] S54, driving the main control LED cabinet to transfer the image frame segments to the corresponding display LED cabinets according to the global timestamp; the global timestamp is determined by the local clock of each display LED cabinet.

[0121] The master control LED box sends the previously segmented image frame segments to each display LED box via the corresponding wireless communication path. In the data packet of each image frame segment, a global timestamp for triggering display is appended. This timestamp represents the exact moment when the image frame segment should be displayed. Its value is based on the unified clock system of the master control LED box and has been adapted to the clock calibration status of each target node, that is, the global timestamp has the same semantics of when to start displaying the image frame in each box.

[0122] S55. The display LED box displays the corresponding image frame segment according to the global timestamp.

[0123] Schematically, after receiving the image frame segment locally, each display LED box does not display it immediately. Instead, it caches it in the local cache module and enters the timed trigger waiting state. The built-in timer continuously monitors the current local time. When the local clock reaches the global timestamp attached to the data packet, it immediately starts the image display rendering of the frame segment, ensuring that all LED boxes can synchronously execute the image display operation in physical space. Even if there are slight time delay differences due to network transmission, the final display can still maintain temporal consistency and visual continuity.

[0124] Furthermore, this time synchronization mechanism also applies to the periodic synchronous display of continuous frames, supporting the repeated execution of the above process within each frame period, or using the beat signal and continuous synchronization model to further reduce the communication load and improve the synchronization efficiency, which is particularly suitable for dynamic video scenarios with high frame rate requirements.

[0125] In one of the embodiments, it further includes:

[0126] In response to the user's manual mode switching instruction, change the working mode of the LED box.

[0127] The LED box receives the manual mode switching instruction and changes the working mode of the LED box with the highest priority to meet the specific needs of the user, supporting higher-level flexible assembly, modular deployment, and runtime evolution, providing technical support for the LED display in dealing with rapid deployment, complex environmental changes, and customized scenario requirements, and effectively expanding the technical applicability and operational robustness under multi-scenario and multi-structure application conditions.

[0128] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are sequentially shown according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same moment, but can be executed at different moments. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0129] Based on the same inventive concept, an embodiment of the present application also provides a multi-size LED box wireless transmission device for implementing the multi-size LED box wireless transmission method described above. The implementation solutions provided by this device to solve problems are similar to the implementation solutions described in the above method. Therefore, the specific limitations in one or more embodiments of the multi-size LED box wireless transmission device provided below can refer to the limitations on the multi-size LED box wireless transmission method in the above text, and will not be repeated here.

[0130] In an exemplary embodiment, as Figure 4 shown, a multi-size LED box wireless transmission device is provided, including:

[0131] A monitoring module 401, configured to obtain an adjacent box judgment result in response to the surrounding space information obtained in real time;

[0132] A mode switching module 402, configured to determine the working mode of the LED box according to the adjacent box judgment result; the working mode includes a synchronous display mode and an asynchronous display mode;

[0133] A synchronous wireless transmission module 403, configured to, when the working mode of the LED box is the synchronous display mode, complete the wireless slice transmission and synchronous control display of the picture data with the mutually adjacent LED boxes based on a wireless communication mechanism;

[0134] An asynchronous display module 404, configured to independently display the picture data when the working mode of the LED box is the asynchronous display mode.

[0135] In one of the embodiments, it further includes:

[0136] A topology module, configured to generate a topology relation table according to the surrounding space information of multiple mutually adjacent LED boxes;

[0137] The cluster construction module is used to establish a multi-cabinet cluster in the wireless mesh network based on the topology relation table, and determine the master cabinet through the master selection algorithm to obtain the network topology table and the information of the master LED cabinet;

[0138] The display segmentation module is used to drive the master LED cabinet to calculate the display layout according to the network topology table, and segment the video data to obtain multiple image frame segments;

[0139] The synchronous wireless transmission module is also used to send multiple image frame segments to the corresponding LED cabinets through wireless transmission based on the communication path, and perform synchronous control display with unified clock.

[0140] In one embodiment, it further includes:

[0141] The adjacency determination module is used to perform adjacency recognition on the surrounding space information of multiple adjacent LED cabinets based on the adjacency determination algorithm to obtain the adjacency cabinet list;

[0142] The adjacency matrix module is used to obtain the adjacency matrix according to the adjacency relationship of each LED cabinet in the adjacency cabinet list; the adjacency matrix includes adjacency items and connection states;

[0143] The topology module is also used to extract the dimension attributes and relative position information in the adjacency cabinet list based on the structure of the adjacency matrix to generate the topology relation table; the topology relation table includes the unique identifier of each LED cabinet, the corresponding dimension attributes, adjacency items, and the relative position information corresponding to the adjacency items.

[0144] In one embodiment, it further includes:

[0145] The node division module is used to construct a preliminary network node set based on the status information broadcast by each LED cabinet and the corresponding topology relation table;

[0146] The communication establishment module is used to establish a two-way wireless link for the adjacent LED cabinets in the preliminary network node set to obtain the communication link set;

[0147] The master selection module is used to label the role of each LED cabinet through a preset master selection algorithm, and synchronize the unique identifier of the master LED cabinet to all LED cabinets to obtain the node role information; the node role information includes the information of the master LED cabinet;

[0148] The cluster construction module is also used to generate the network topology table according to the communication link set and the node role information.

[0149] In one embodiment, the display segmentation module is further configured to drive the master LED cabinet to obtain the attributes of each LED cabinet and the corresponding adjacency information from the network topology table, calculate the pixel coordinate mapping of the overall display layout; and divide the video data into multiple rectangular frame segments according to the pixel grid to obtain multiple image frame segments.

[0150] In one embodiment, it further includes:

[0151] A request module, configured to drive the master LED cabinet to broadcast a synchronization request signal and receive the delay request signals replied by the corresponding display LED cabinets;

[0152] A response module, configured to calculate the one-way delay according to the synchronization request signal and the delay request signal;

[0153] A synchronization module, configured to calibrate the local clocks of the display LED cabinets according to the one-way delay;

[0154] A driving module, configured to drive the master LED cabinet to send the image frame segments to the corresponding display LED cabinets according to the global timestamp;

[0155] A caching module, configured to display the corresponding image frame segments by the display LED cabinets according to the global timestamp.

[0156] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the steps in the above method embodiments are implemented.

[0157] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0158] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can refer to the partial descriptions of the method embodiments. The device embodiments described above are only illustrative. The components described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the present disclosure. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0159] The above-described embodiments merely represent several implementation manners of the embodiments of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the embodiments of the application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the embodiments of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the embodiments of the present application.

Claims

1. A wireless transmission method for multi-size LED boxes, characterized in that, The method includes: Obtaining an adjacent box determination result in response to the surrounding space information obtained in real time; the adjacent box determination result includes the existence of an adjacent box and the non-existence of an adjacent box; Determining the working mode of the LED box according to the adjacent box determination result; the working mode includes a synchronous display mode and an asynchronous display mode; When the working mode of the LED box is the synchronous display mode, based on the wireless communication mechanism, complete the wireless slicing transmission and synchronous control display of the picture data with the mutually adjacent LED boxes; When the working mode of the LED box is the asynchronous display mode, perform independent display of the picture data.

2. The method according to claim 1, wherein The completing the wireless slicing transmission and synchronous control display of the picture data with the adjacent LED boxes based on the wireless communication mechanism includes: Generating a topology relation table according to the surrounding space information of multiple mutually adjacent LED boxes; Based on the topology relation table, establishing a multi-box cluster in the wireless mesh network, and determining the master box through a master selection algorithm to obtain a network topology table and master LED box information; the network topology table includes the attributes of the LED boxes and the corresponding adjacent information and communication paths; Driving the master LED box to calculate the display layout according to the network topology table, and slicing the picture data to obtain multiple image frame segments; Based on the communication path, wirelessly transmit the multiple image frame segments to the corresponding LED boxes and perform synchronous control display with unified clock.

3. The method according to claim 2, wherein The generating a topology relation table according to the surrounding space information of multiple mutually adjacent LED boxes includes: Based on the adjacent determination algorithm, performing adjacent recognition on the surrounding space information of multiple adjacent LED boxes to obtain an adjacent box list; the adjacent box list includes the unique identifier, size attribute, and relative position information of the LED boxes; Obtaining an adjacency matrix according to the adjacency relationship of each LED box in the adjacent box list; the adjacency matrix includes adjacency items and connection states; Extracting the size attribute and the relative position information in the adjacent box list based on the structure of the adjacency matrix to generate a topology relation table; the topology relation table includes the unique identifier, corresponding size attribute, adjacency items, and relative position information corresponding to the adjacency items of each LED box.

4. The method according to claim 3, wherein The establishing a multi-box cluster in the wireless mesh network based on the topology relation table and determining the master box through a master selection algorithm to obtain a network topology table and master LED box information includes: Constructing a preliminary network node set based on the status information broadcast by each LED box and the corresponding topology relation table; Establishing two-way wireless links for the adjacent LED boxes in the preliminary network node set to obtain a communication link set; Through a preset master selection algorithm, performing role labeling on each LED box, and synchronizing the unique identifier of the master LED box to all LED boxes to obtain node role information; the node role information includes master LED box information; Generating the network topology table according to the communication link set and the node role information.

5. The method according to claim 2, wherein The driving of the main control LED box to calculate the display layout according to the network topology table and to divide the picture data into multiple image frame segments includes: The master control LED box obtains the attributes of each LED box and the corresponding adjacency information from the network topology table, and calculates the pixel coordinate mapping of the overall display layout; the pixel coordinate mapping includes a pixel grid and a corresponding display LED box; The picture data is divided into a plurality of rectangular frame segments according to the pixel grid to obtain a plurality of image frame segments.

6. The method according to claim 5, characterized in that, Based on the communication path, the plurality of image frame segments are sent to the corresponding LED boxes through wireless transmission, and synchronous control display is performed with a unified clock, including: Driving the master control LED box to broadcast a synchronization request signal, and receiving a delay request signal replied by each corresponding display LED box; Calculating a one-way delay according to the synchronization request signal and the delay request signal; Calibrate the local clock of each of the display LED boxes according to the one-way delay; Driving the master control LED box to transfer the image frame fragment to the corresponding display LED box according to the global timestamp; the global timestamp is determined by the local clock of each display LED box; The display LED box displays the corresponding image frame segment according to the global timestamp.

7. The method according to any one of claims 1-6, characterized in that The method further comprises: In response to a manual mode switching instruction from a user, the working mode of the LED box is changed.

8. A wireless transmission device for multi-size LED cabinets, characterized in that, The device comprises: A monitoring module, used to obtain adjacent box judgment results in response to the surrounding space information obtained in real time; A mode switching module determines the working mode of the LED box according to the adjacent box judgment result; the working mode includes a synchronous display mode and an asynchronous display mode; A synchronous wireless transmission module, used for completing wireless slicing transmission and synchronous control display of picture data with adjacent LED boxes based on a wireless communication mechanism when the working mode of the LED box is a synchronous display mode; The asynchronous display module is used to independently display the picture data when the working mode of the LED box is the asynchronous display mode.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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