Outdoor large-screen content management and control method and system

Abstract

This invention discloses a method and system for managing content on outdoor large screens. It includes: firstly, identifying the content publishing mode of the outdoor large screen, distinguishing between remote content publishing mode and local terminal content publishing mode; for the remote mode, executing a network control process, modifying the IP address of the content publishing server through the content display box, and performing matching verification using a pre-stored device identifier-server IP mapping table in a centralized firewall, while simultaneously setting a content update window period, allowing network updates only within the window period to prevent unnecessary network access; for the local mode, executing a remote power control process, establishing a connection with the control platform through a remote power control module to monitor abnormal signals, and remotely cutting off the power to the display screen when an anomaly is confirmed; finally, recording a control log containing information such as the triggering reason and execution time. This invention achieves precise and differentiated control over different publishing modes, improving the level of content security for outdoor large screens.

Description

Technical Field

[0001] This invention relates to the field of outdoor display device management technology, and in particular to a method and system for controlling the content of outdoor large screens. Background Technology

[0002] With the development of urban public informatization, outdoor screens have become an important medium for content dissemination, widely used in various scenarios such as commercial advertising, government information dissemination, and social service announcements. The increasing number of outdoor screens is due to their wide playback range, large audience reach, and high dissemination efficiency. However, during operation, the content publishing modes of these distributed screens are becoming increasingly diverse, generally categorized into remote publishing modes relying on network content delivery and local publishing modes based on local terminals. These different modes differ significantly in content update methods, network dependence, and equipment configuration, posing new challenges to unified, secure, and efficient content management.

[0003] In practical applications, the security and reliability of content displayed on outdoor large screens have become a major concern. On the one hand, large screens need to ensure the credibility of the information sources they present and the stability of the publishing process. However, because large screens are often located in public environments and have long operating cycles, the content management chain is susceptible to external interference or abnormal operations. A lack of effective access control, status monitoring, and constraints on publishing behavior can lead to chaotic content playback, the infiltration of illegal information, or the prolonged display of erroneous content, resulting in negative social impacts.

[0004] On the other hand, different content publishing models differ in their operational characteristics and potential risks. For example, devices that rely on network updates require more refined control over connection management, access legitimacy verification, and content update timing; while locally published devices, if unable to respond quickly to abnormal content or controlled risks, may result in the continued display of inappropriate content, impacting handling efficiency. Furthermore, because large screens are often deployed in dispersed locations and manual on-site handling is costly, emergency response speed and remote processing capabilities are critical aspects that require close attention in large screen management systems.

[0005] Meanwhile, due to the diverse deployments of outdoor large screens, inconsistent management units, and complex operating environments, the lack of differentiated strategies for different publishing modes in screen management can easily lead to resource waste or reduced equipment lifespan. For example, managing devices with different network dependencies in the same way may fail to meet both their usage needs and security requirements; furthermore, the lack of necessary recording and tracking mechanisms makes it difficult to trace the causes of abnormal events, affecting subsequent risk analysis and management optimization.

[0006] In summary, the following problems generally exist in the content publishing and management of current outdoor large screens:

[0007] (1) Insufficient credibility assurance of content sources and distribution links;

[0008] (2) The efficiency of discovering and handling abnormal content is low, and there is a lack of rapid response measures;

[0009] (3) Different release modes lack corresponding classification management mechanisms, making it difficult to balance security and actual usage needs;

[0010] (4) The control process lacks systematic and traceable records, making it difficult to form a complete safety management closed loop.

[0011] Therefore, the industry urgently needs a method for managing outdoor large screen content that can adapt to multiple publishing modes, improve content security, enhance emergency response efficiency, and have full-process recording capabilities, in order to better maintain the security and stability of public information display. Summary of the Invention

[0012] In view of the shortcomings of existing technologies, the purpose of this invention is to provide a method and system for managing outdoor large screen content, which can achieve accurate identification and hierarchical management based on the publishing mode, and improve content security, emergency response speed and overall process controllability.

[0013] To achieve the above objectives, the present invention provides the following technical solution: a method for managing content on an outdoor large screen, comprising the following steps:

[0014] S1: Identify the content publishing mode of the outdoor screen and determine whether the outdoor screen is a remote content publishing mode accessed through a display box or a local terminal content publishing mode.

[0015] S2: If the remote content publishing mode is identified, the IP address of the content publishing server to be connected is modified through the content display box, and the modified IP address is matched and verified with the device identifier-server IP mapping table pre-stored in the centralized firewall; the network connection between the display box and the content publishing server is established through the preset content update window period of the management platform to complete the content update, and the network connection is automatically blocked outside the window period.

[0016] S3: If the local terminal content publishing mode is identified, a communication connection is established with the management and control platform through the remote power control module connected in series in the main power line of the display screen; monitor whether abnormal content publishing reports or security threat signals are received;

[0017] S4: When a valid abnormal signal is received, the management platform sends a command to the remote power control module to cut off the power to the display screen;

[0018] S5: After completing the network control process or remote power control process, record the detailed information of the control event to form a control log. The control log includes the control triggering reason, execution time, measure type and execution result.

[0019] Furthermore, in S2, the process of modifying the IP address of the content publishing server to be connected through the content display box is implemented based on the IP configuration unit built into the content display box;

[0020] The IP configuration unit is configured to modify the IP address in response to remote management commands from the management platform or to local operation inputs.

[0021] Furthermore, the matching and verification process in S2 includes: the centralized firewall extracts the target server IP address and the unique device identifier of the display box from the network connection request initiated by the display box; verifies whether the combination of the device identifier and the target server IP address exists in the mapping table; if it does not exist, the network connection is blocked; if it exists, it further determines whether the current time is within the content update window period, and only opens the network port to allow connection when the current time is within the content update window period.

[0022] Furthermore, the content update window period includes a fixed periodic window period and a temporary trigger window period; the duration of the window period is determined based on the amount of data in the content to be updated and the network transmission rate.

[0023] Furthermore, the remote power control module includes:

[0024] A communication unit is used to establish and maintain a communication connection with the control platform;

[0025] A power switch unit is used to receive instructions from the control platform and perform power on / off operations on the display screen.

[0026] The status monitoring unit is used to collect electrical parameters of the power supply line and feed them back to the control platform.

[0027] Furthermore, the abnormal content release report or security threat signal includes at least one of the following:

[0028] Signals are manually reported and submitted by management personnel through the control platform.

[0029] The automatic identification signal is generated by the image acquisition and AI recognition module built into the display screen when it identifies content that matches the preset database of inappropriate information features.

[0030] The security monitoring signal is triggered by the security protection software installed on the local terminal when malicious operations are detected.

[0031] Furthermore, the following supplementary steps are included after S4:

[0032] S41: The control platform pushes a power cut-off notification to at least one preset management personnel terminal;

[0033] S42: Initiate the anomaly investigation process and submit an investigation report through the management platform after the investigation is completed;

[0034] S43: After confirming that the anomaly has been eliminated, the management platform issues a power restoration command, and the remote power control module responds to the command to restore power supply.

[0035] Furthermore, the step of recording the control log also includes: recording network connection blocking statistics and content update success rate for remote content publishing mode, and / or recording power control trigger frequency and abnormal cause classification statistics for local terminal publishing mode.

[0036] Furthermore, the network management process of S2 also includes an anomaly interception mechanism, which is configured as follows:

[0037] If the display box initiates more than a preset number of network connection requests outside of a window period, the management platform will automatically generate and send a warning signal to the administrator.

[0038] An outdoor large screen content management system is used to implement the outdoor large screen content management method described above, including: a management platform, a content display box, a centralized firewall, a remote power control module, a memory, and a processor;

[0039] The control platform is communicatively connected to the content display box, the centralized firewall, and the remote power control module, and is used to send control commands and receive status information.

[0040] The content display box is connected to the centralized firewall network and is used to initiate a network connection request to the firewall and obtain display content from the content publishing server after the request is approved.

[0041] The centralized firewall is deployed on the network path between the content display box and the content publishing server, and is used to perform the verification and window period control of the device identifier-server IP mapping table;

[0042] The remote power control module is connected in series to the main power line of the outdoor screen and communicates with the management and control platform to receive and execute power on / off commands, while also providing feedback on the power status.

[0043] The memory is connected to the processor, and the memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, they control the management platform, content display box, centralized firewall and remote power control module to work together to realize the outdoor large screen content management method as described above.

[0044] The beneficial effects of this invention are:

[0045] This invention provides a unified, effective, and adaptive management mechanism for various content publishing models. Compared to traditional control methods that rely on a single strategy, it has at least the following advantages:

[0046] 1. Achieve differentiated and precise control based on release patterns to improve adaptability and effectiveness:

[0047] This invention can automatically identify the content publishing mode of outdoor large screens and match the corresponding control process accordingly, so that the control measures taken are consistent with the actual operation mode.

[0048] For devices that rely on the network for content delivery, this invention enables targeted management of network usage behavior and content update processes; for devices that primarily use local content, this invention can quickly initiate emergency response procedures when abnormal content occurs. Through this pattern recognition and differentiated response mechanism, ineffective operations and resource waste can be avoided, improving adaptability in various scenarios such as commerce, government affairs, and public services.

[0049] 2. Enhanced content security through end-to-end risk control, shifting security assurance from reactive response to proactive prevention:

[0050] This invention monitors, verifies, and confirms the status of key links, enabling early identification of potential risks in the content publishing chain and preventing unauthorized content, abnormal operations, or external interference from affecting large-screen displays.

[0051] In the network publishing mode, the present invention can control the connection behavior and the timing of content updates, making the large screen more controllable, thereby reducing the exposure risk that may be caused by continuous network connection.

[0052] In local publishing mode, this invention can quickly execute corresponding control actions after detecting abnormal signals, significantly shortening the display time of abnormal content and improving emergency response efficiency.

[0053] Proactive risk control can effectively reduce the opportunities for the spread of harmful information and improve the security level of public information display.

[0054] 3. Establish an auditable and traceable control record system to support continuous optimization of the management closed loop:

[0055] This invention can automatically record key data of relevant events after the execution of the control process, including the triggering cause, execution time, measures and results, so that the entire control process has clear traceability.

[0056] By analyzing this data, managers can identify equipment risks, operational bottlenecks, or abnormal trends, and continuously optimize management strategies based on the actual situation. For example, if a certain type of equipment frequently experiences malfunctions, the management unit can strengthen maintenance or adjust configurations accordingly, thereby improving the overall stability of the system.

[0057] Therefore, this invention not only enables real-time content security management, but also provides data support for subsequent governance, enabling the control system to continuously evolve and form a dynamic and long-term effective management loop. Attached Figure Description

[0058] Figure 1 This is a flowchart of the steps in the outdoor large screen content control method of the present invention;

[0059] Figure 2 This is a flowchart of steps S41-S43 in this invention;

[0060] Figure 3 This is a schematic diagram of the outdoor large screen content management system of the present invention.

[0061] Reference numerals: 1. Control platform; 2. Content display box; 21. IP configuration unit; 3. Centralized firewall; 4. Remote power control module; 41. Communication unit; 42. Power switch unit; 43. Status monitoring unit; 5. Memory; 6. Processor. Detailed Implementation

[0062] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0063] Example 1, referring to Figure 1 This is the first embodiment of the present invention, which provides a method for managing content on an outdoor large screen. The deployment environment of this method includes: an outdoor LED display screen, a content display box 2, a content publishing server, a centralized firewall 3, a management platform 1, a remote power control module 4, and camera monitoring equipment, etc. This embodiment identifies the content publishing mode of the outdoor large screen and establishes corresponding network connection control procedures or power management procedures, thereby forming a complete closed loop for content updates, security emergencies, and behavior auditing.

[0064] The overall working principle of Example 1:

[0065] The principle of content distribution pattern recognition corresponds to S1: The control platform 1 obtains the content source method of the outdoor screen through pre-entered data or automatic detection. If it detects that the screen relies on content display box 2 to interact with a remote server, it is determined to be a remote content distribution mode; if it detects that the screen is directly driven by a local terminal to play content, it is determined to be a local terminal content distribution mode. The technical effect of this step is to classify and process different modes, laying the foundation for subsequent differentiated control.

[0066] The network management principle in remote mode corresponds to S2: In remote publishing mode, management platform 1 can modify or reset the server IP address that the content display box 2 needs to connect to through the parameter configuration interface, and then compare the modified IP address with the "device identifier - server IP" mapping table in the centralized firewall 3.

[0067] When the preset content update window is entered (e.g., 1:00 AM – 3:00 AM daily, with a maximum window duration of 120 minutes), the management platform 1 instructs the firewall to open necessary ports, allowing the set-top box to establish a connection with the content publishing server. Outside of the window period, the firewall automatically blocks connection requests.

[0068] This mechanism implements synchronous constraints on network connection time, access targets, and data channels. The technical effects include: implementing a strategy of "content can be updated within a limited time period", which not only ensures content updates but also reduces the risk of network attacks or unauthorized access that may be caused by prolonged network connection.

[0069] The power management principle in local mode corresponds to S3–S4: In local terminal publishing mode, the system remotely manages the power supply through a remote power control module 4 connected in series with the main power line of the large screen. The management platform 1 receives abnormal content publishing signals in real time from security monitoring software, image recognition modules, or manual reports. After verifying and confirming the validity of the abnormal signal, the platform issues a power-off command, and the power control module cuts off the main power supply within the configured threshold (the threshold in this embodiment is 10 seconds, and the actual execution time is about 8 seconds).

[0070] Its technical effect is to quickly stop the spread of abnormal content, reducing the emergency response time from more than 30 minutes to less than 10 seconds.

[0071] The principle of control log recording corresponds to S5: After completing the network control process or power control process, the control platform 1 records the triggering reason, execution time, measure type and execution result of the event to achieve security audit and traceability.

[0072] Technical benefits: It forms a traceable and reviewable management loop, improving overall management efficiency and controllability.

[0073] Application Scenario 1: Control of remote display screens in commercial plazas (corresponding to remote mode):

[0074] A commercial plaza in a first-tier city deployed 10 outdoor LED screens, all using a remote content publishing mode. The system environment included: content display boxes 2, an advertising publishing server, a clustered firewall, a management center, and back-end maintenance personnel.

[0075] 1. Initial configuration phase:

[0076] (1) Pattern recognition: The management platform 1 pre-enters the device information of 10 large screens, marks the publishing mode as remote content publishing mode, and assigns a unique device number (BOX-001 to BOX-010) to each content display box 2. The device number serves as the device identifier and is used for subsequent firewall comparison and log recording.

[0077] (2) Firewall configuration: Two centralized firewalls 3 are deployed in the square control center to form a cluster, which serves as backups for each other to avoid single points of failure. The mapping relationship of "device number - server IP" is entered into the firewall. For example, the server IP corresponding to BOX-001 is 192.168.5.100, and the other boxes point to the same advertising server IP.

[0078] (3) Window period setting: The content update window period of the management platform 1 is set to 1:00-3:00 AM every day, with a maximum window period of 120 minutes. Window period control is a key threshold setting in this embodiment, used to limit network access time.

[0079] 2. Routine management and control implementation phase:

[0080] (1) Preparation before the window period: At 0:50 every day, the management platform 1 sends the “prepare to update” instruction to the content display boxes 2 of the 10 large screens. The boxes automatically wake up their network modules and enter the waiting state.

[0081] (2) Window period content update: 1:00, the window period is opened, the firewall allows connection requests according to the mapping table, BOX-001 to BOX-010 establish a connection and download the content to be played the next day (approximately 5GB per block).

[0082] At 2:30, BOX-001 to BOX-009 completed their downloads and automatically disconnected; BOX-010 failed to download due to network fluctuations.

[0083] (3) Post-window period control: At 3:00, the window period automatically ends, and the firewall closes this type of connection. The control platform 1 detects that the BOX-010 update has failed and pushes a reminder message to the administrator. The administrator extends the BOX-010 window period to 4:00 and re-initiates the update task according to the extended window period mechanism. The content update is completed at 3:40. The firewall records the actual network connection time as 1 hour and 40 minutes.

[0084] Technical benefits: Ensures high update success rate and fully controls connection behavior; avoids network exposure risks caused by continuous 24 / 7 connectivity; enables timely detection and handling of update anomalies.

[0085] 3. Exception handling phase:

[0086] (1) Non-window period connection warning: At 14:00 on a certain day, BOX-005 attempted to initiate a network connection. The firewall detected that it was outside the window period, blocked it directly, and generated a log. At 14:05, the device attempted to connect again. The management platform 1 determined that it was a frequent abnormal request and automatically pushed a warning message to the administrator.

[0087] (2) Investigation and handling: After on-site inspection, the management personnel found that the server IP parameters of the display box 2 had been tampered with. The maintenance personnel restored the correct IP configuration through the management platform 1 and increased the complexity of the IP change password (including uppercase and lowercase letters, numbers and symbols) to reduce the risk of being tampered with again from the management strategy.

[0088] Technical benefits: Illegal connection behavior can be intercepted in real time; configuration tampering can be quickly located; and source tracing analysis and enhanced protection can be performed through logs.

[0089] Application Scenario 2: Management and control of local community publishing dashboards (corresponding to local mode):

[0090] A community deployed a locally released outdoor LED screen. The system environment included: community office computer, local content playback system, RPC-500 remote power control module 4, 4G communication network, camera and AI image recognition module, SecGuard-500 security software, etc.

[0091] 1. Initial configuration phase:

[0092] (1) Pattern recognition: On-site detection confirmed that the large screen was driven locally by the community office computer. The management platform 1 marked it as the local terminal content publishing mode and assigned it the device number LOCAL-001.

[0093] (2) Remote power control deployment: Install RPC-500 remote power control module 4 in the main power line of the large screen. The module has a built-in 4G communication unit 41 and a SIM card installed to complete the binding with the management and control platform 1 and synchronize it to the mobile APP of the community management personnel.

[0094] (3) Anomaly monitoring configuration: Install a high-definition camera on the top of the large screen and connect it to the AI ​​image recognition module, and load the "Malicious Information Feature Database V3.0". Install SecGuard-500 security protection software on the office computer and enable the real-time monitoring function.

[0095] All of the above monitoring modules can send abnormal signals to the control platform 1, forming the abnormal detection threshold system in this embodiment.

[0096] 2. Emergency control implementation phase:

[0097] (1) Abnormal signal trigger: At 9:30 a.m. on a certain day, the office computer was infected with malicious program by hackers. SecGuard-500 detected the illegal file writing and sent a "security threat signal" to the management platform 1.

[0098] (2) Signal verification: The control platform 1 immediately retrieves the real-time video from the camera and finds that the large screen is displaying vulgar advertisements. After manual confirmation by the management personnel, the platform determines that the abnormal signal is valid.

[0099] (3) Remote power outage handling: At 9:31, the control platform 1 sends a power outage command to RPC-500. The control module cuts off the main power supply within 8 seconds, meeting the action threshold requirement of "completing the operation within 10 seconds". After receiving the "power outage successful" feedback, the system pushes a notification to the community management personnel: "LOCAL-001 has been powered off due to malicious intrusion".

[0100] (4) Recovery and Recording: At 9:45, management personnel arrived on-site to investigate and remove malicious programs, and submitted a "Abnormality Eliminated" report on the platform. At 9:50, the platform issued a power restoration command, the module executed the shutdown, and the large screen resumed normal display. The platform recorded a complete event log, including the triggering cause, power outage time, recovery time, and personnel information.

[0101] Technical effects: Abnormal content display is quickly terminated, reducing the risk of propagation; power outages do not require human intervention, reducing emergency response time to the second level; log records form an auditable chain, which helps with subsequent security hardening.

[0102] Example 2 is the second embodiment of the present invention. This embodiment also includes pattern recognition, network management and control procedures, local terminal power management and control procedures, anomaly monitoring mechanisms, and management and control log recording functions. The difference lies in that this embodiment provides detailed explanations of the execution method of the IP configuration unit 21, the matching and verification details of the centralized firewall 3, the window period types, the unit structure of the remote power control module 4, the types of multi-source abnormal signals, the extended procedures after emergency power outages, and the network anomaly interception mechanism. This results in a clearer work chain, richer functional refinement, and more comprehensive technical effects in this embodiment.

[0103] The following explanation will elaborate on the working principle and two specific application scenarios.

[0104] Working principle of Example 2:

[0105] 1. Working principle of the pattern recognition module: When the system starts up or the device is connected for the first time, the management platform 1 identifies the content publishing mode of the outdoor screen through pre-entered data or on-site detection.

[0106] Specifically: If the outdoor large screen relies on Content Display Box 2 to interact with an external server, it is determined to be in remote content publishing mode. Content Display Box 2 itself does not store long-term content; it only retrieves video, image, or animation files from the content publishing server when connected to the network and then transmits them to the LED screen for playback.

[0107] If the large screen is directly connected to a local terminal (such as a desktop computer, USB flash drive, or industrial host), it is determined to be in local terminal content publishing mode. In this mode, content generation and updates are based on local operations and do not require real-time network connectivity.

[0108] The technical advantage of pattern recognition lies in establishing differentiated control strategies through classification, avoiding erroneous control, such as imposing network restrictions on local terminals or frequently shutting down remote devices, thereby improving control adaptability and overall efficiency.

[0109] 2. Network control working principle of remote content publishing mode:

[0110] 2.1: Execution mechanism of IP configuration unit 21:

[0111] The content display box 2 has a built-in IP configuration unit 21, which supports remote IP address modification: the management platform 1 sends an encrypted IP modification command to the content display box 2, including the target server IP, modification timestamp, device identifier, and other information. The content display box 2 verifies the command's validity and then updates its network parameters.

[0112] To change the IP address locally: Access the configuration interface via the physical button on the box or the accompanying client software, and manually change the target server IP after entering the administrator password.

[0113] The function of IP configuration unit 21 is to ensure the legitimacy and controllability of the server IP and prevent connection to illegal external servers due to malicious modification of the IP.

[0114] Technical effect: It enables precise and reliable control at the "IP parameter level", providing a reliable configuration foundation for subsequent network connection verification.

[0115] 2.2: Mapping and Time Verification of Centralized Firewall 3:

[0116] When content display box 2 initiates a network connection request, centralized firewall 3 performs dual verification according to the following process:

[0117] Extracted Information: The firewall reads the target server IP and the unique device identifier of Box 2 from the request.

[0118] Mapping table matching verification: Determine whether the combination of "device identifier + target IP" exists in the pre-stored mapping table.

[0119] If it does not exist, immediately block the connection and record the reason for blocking, the requesting IP, the device identifier, and the time.

[0120] If it exists, continue with the time verification.

[0121] Window period time verification: The firewall determines whether the current time is within the content update window: if it is within the window, the port is opened to allow the connection. If it is not within the window, the connection request is blocked.

[0122] This mechanism implements triple verification based on identity, destination IP, and time.

[0123] Technical effect: Effectively prevents unauthorized connections, illegal IP requests, and attempts to upload content outside the specified window, ensuring the credibility of the content source and the controllability of connection behavior.

[0124] 2.3: Content Update Window Management:

[0125] The window period in this embodiment includes:

[0126] Fixed periodic window: For example, 1:00 AM to 3:00 AM daily, used for regular content updates of commercial advertising screens.

[0127] Temporary trigger window: Used for emergency content updates (such as sudden public service announcements). Its duration is automatically calculated based on the size of the content to be updated and the network transmission rate. For example, when the content size is 1GB and the bandwidth is 100Mbps, the update time is about 10 minutes. The window period can be set to 30 minutes to ensure transmission redundancy.

[0128] Technical benefits: Enables flexible content update scheduling based on business needs, improves content update efficiency, and maintains network security.

[0129] 2.4: Anomaly Interception Mechanism

[0130] This embodiment sets a threshold for abnormal connection requests outside the window period, such as "three consecutive connection attempts". When the number of connection attempts by the content display box 2 outside the window period exceeds the threshold, the management platform 1 automatically generates an early warning signal and pushes it to the administrator's terminal.

[0131] Technical effect: It can detect potential anomalies in advance, such as IP tampering or malicious control of the content display box 2, and prevent the expansion of security risks from the source.

[0132] 3. Power management in local terminal content publishing mode:

[0133] 3.1: Remote power control module 4 structure: includes:

[0134] Communication unit 41: communicates stably with the management and control platform 1 via 4G / 5G or Ethernet.

[0135] Power switch unit 42: Receives power-off / power-on commands, controls the on / off state of the electromagnetic relay, and completes the physical control of the main power supply line of the display screen.

[0136] Status monitoring unit 43: Real-time acquisition of electrical parameters such as voltage, current, and temperature, and feedback to the control platform 1.

[0137] Technical benefits: Enables remote, real-time power control, providing a foundation for rapid emergency response.

[0138] 3.2: Abnormal signal triggering mechanism:

[0139] Abnormal trigger signals include: Manual reporting signals: Managers upload photos of abnormal content, on-site descriptions, and other information through the management platform 1 APP.

[0140] Automatic signal recognition: The display screen's built-in camera captures images, and the AI ​​recognition module matches them with the "malicious information feature database." If the matching degree is ≥90%, an abnormal signal is automatically triggered.

[0141] Security monitoring signal: When security software is installed on the local terminal, a threat signal is triggered if malicious programs or illegal file operations are detected.

[0142] Technical effects: Enables multi-channel anomaly monitoring through manual methods, image AI, and local terminals, improving the accuracy and coverage of anomaly detection.

[0143] 3.3 Emergency Power Outage Procedure: After manual verification confirms the anomaly is valid: Control platform 1 issues an encrypted power outage command. Power switch unit 42 completes the power outage within ≤10 seconds. The module reports a "Power outage successful" status and real-time electrical parameters. Control platform 1 then proceeds to the next step.

[0144] Technical effect: The presentation time of abnormal content is reduced from more than 30 minutes to less than 10 seconds, significantly improving the processing speed.

[0145] 3.4: Subsequent extension procedures for S41–S43, refer to... Figure 2 :

[0146] S41: Push notification: The control platform 1 pushes a power cut-off message to at least one management personnel terminal.

[0147] S42: Anomaly Investigation Process: Management personnel conduct on-site investigation and submit an investigation report.

[0148] S43: Power restoration: After the control platform 1 confirms that the abnormality has been eliminated, it issues a restoration command, and the remote power control module 4 closes the relay again to restore power.

[0149] Technical effect: It forms a complete closed loop of "power outage - handling - recovery", improving the standardization and continuity of management and control.

[0150] 4. Control log recording. Log recording includes: for remote publishing mode: number of blocking attempts, connection success rate during the window period, content update details, and network connection duration.

[0151] For local deployment mode: power outage trigger reasons, trigger frequency, recovery time, and exception classification.

[0152] Technical benefits: Facilitates traceability auditing, statistical analysis, and strategy optimization.

[0153] Application Scenario 1: Remote Mode Control of Urban Government Information Screens:

[0154] A large LED screen (equipment number GOV-1001) is deployed on the exterior wall of a municipal government service hall. It relies on content display box 2 to obtain policy promotion content from the government service server.

[0155] 1. Initial configuration: The pattern recognition is set to remote content publishing mode; the control center firewall is set to GOV-1001→10.10.10.50; the fixed window period is every Monday from 9:00 to 11:00, with a window period limit of 120 minutes; temporary window periods can be set according to emergency tasks, such as setting a 30-minute window when updating emergency public service notices.

[0156] 2. Routine Network Management: At 8:50, Management Platform 1 sends the "Prepare for Update" command; at 9:00, the window opens, and the firewall allows access after verifying the IP address and time; Content Display Box 2 downloads this week's policy video (2GB) and completes the update at 10:15; at 11:00, the window ends, and the firewall blocks subsequent connection requests.

[0157] Technical effect: Ensures orderly updates of government content, while avoiding potential attack surfaces caused by prolonged network connectivity on large screens.

[0158] 3. Abnormal interception event: At 14:00 on a certain day, the device made 3 consecutive requests to access the unknown IP segment 172.20.10.X: The firewall blocked all requests because the IP segment was not in the mapping table; after the third request, the platform automatically generated an alert; the maintenance personnel found that the IP configuration had been mistakenly modified by the local maintenance personnel and was restored through IP configuration unit 21.

[0159] Technical effect: Quickly locate the source of the anomaly and prevent erroneous content from being pushed.

[0160] Application Scenario 2: Local Terminal Mode Management of School Announcement Screens

[0161] A middle school installed an LED screen (equipment number SCHOOL-201) at the school gate and used local office computers to publish campus notices.

[0162] 1. Configuration phase: The pattern recognition is set to local terminal content publishing mode; the large screen power supply is connected in series with the RPC-500 control module, and the communication method is 4G; security software is installed on the computer, and a camera and AI recognition module are installed on the large screen.

[0163] 2. Anomaly Detection and Power Outage Procedure: One day, a student mistakenly inserted an inappropriate video into the playlist: The AI ​​recognition module detected that the image matching degree exceeded 90% and immediately triggered an automatic recognition signal; the platform retrieved the camera footage, which was confirmed as valid by the academic affairs staff; the platform issued a power outage command, and the RPC-500 completed the power outage within 8 seconds; the platform pushed a notification and requested the school to submit an investigation report; after 30 minutes, power was restored after investigation, and the content was displayed normally.

[0164] Technical effect: Prevents the spread of inappropriate content in the campus environment and enables rapid handling in highly sensitive scenarios.

[0165] Example 3 is the third embodiment of the present invention. This embodiment provides an outdoor large screen content management system for implementing the above-described outdoor large screen content management method, referring to... Figure 3 It includes: 1. Management platform; 2. Content display box; 3. Centralized firewall; 4. Remote power control module; 5. Memory and processor; 6.

[0166] The control platform 1 is communicatively connected to the content display box 2, the centralized firewall 3, and the remote power control module 4, respectively, and is used to send control commands and receive status information;

[0167] Content display box 2 is connected to the centralized firewall 3 via the network. It is used to initiate network connection requests to the firewall and retrieve display content from the content publishing server after the request is approved.

[0168] Centralized firewall 3 is deployed on the network path between content display box 2 and content publishing server to perform verification of device identifier-server IP mapping table and window period control;

[0169] The remote power control module 4 is connected in series to the main power line of the outdoor screen and communicates with the management platform 1 to receive and execute its power on / off commands, while also providing feedback on the power status.

[0170] The memory 5 is connected to the processor 6. The memory 5 stores computer-readable instructions. When the computer-readable instructions are executed by the processor 6, the control and management platform 1, the content display box 2, the centralized firewall 3 and the remote power control module 4 work together to realize the above-mentioned method for controlling the content of the outdoor large screen.

[0171] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for controlling content on an outdoor large screen, characterized in that: Includes the following steps: S1: Identify the content publishing mode of the outdoor screen and determine whether the outdoor screen is a remote content publishing mode accessed through the content display box (2) or a local terminal content publishing mode. S2: If the remote content publishing mode is identified, the management platform (1) sends an IP configuration instruction to the IP configuration unit (21) built into the content display box (2). The IP configuration instruction includes at least the target server IP address, the modification timestamp, and the unique device identifier of the content display box (2). After verifying the validity of the IP configuration instruction, the IP configuration unit (21) modifies the IP address of the content publishing server to be connected through the content display box (2). The content display box (2) initiates a network connection request based on the modified content publishing server IP address, and the centralized firewall (3) initiates a connection request to the content display box (2). The network connection request performs a mapping verification based on the combination of a unique device identifier and the target server IP address. If the mapping verification fails, the network connection is blocked. If the mapping verification passes, it is further determined whether the current time is within the content update window. Only when the mapping verification passes and the current time is within the content update window, a network connection is established between the content display box (2) and the content publishing server to complete the content update. The network connection is automatically blocked outside the window. If the content display box (2) initiates more than a preset number of network connection requests outside the window, the management platform (1) automatically generates and sends a warning signal to the management personnel. S3: If the local terminal content publishing mode is identified, a communication connection is established with the management and control platform (1) through the remote power control module (4) connected in series in the main power line of the display screen; monitor whether abnormal content publishing reports or security threat signals are received; S4: When a valid abnormal signal is received, the control platform (1) sends an instruction to the remote power control module (4) to cut off the power supply to the display screen. S5: After completing the network control process or remote power control process, record the detailed information of the control event to form a control log. The control log includes the control triggering reason, execution time, measure type and execution result.

2. The method for controlling content on outdoor large screens according to claim 1, characterized in that: In S2, the process of modifying the IP address of the content publishing server to be connected through the content display box (2) is implemented based on the IP configuration unit (21) built into the content display box (2); The IP configuration unit (21) is configured to modify the IP address in response to remote control commands from the control platform (1) or in response to local operation inputs.

3. The method for controlling content on outdoor large screens according to claim 1, characterized in that: The mapping verification process in S2 includes: the centralized firewall (3) extracts the target server IP address and the unique device identifier of the content display box (2) from the network connection request initiated by the content display box (2); verifies whether the combination of the unique device identifier and the target server IP address exists in the pre-stored device identifier-server IP mapping table; if it does not exist, the network connection is blocked; if it exists, it further determines whether the current time is within the content update window period, and only opens the network port to allow connection when the current time is within the content update window period; The device identifier-server IP mapping table includes the correspondence between the unique device identifiers of multiple content display boxes (2) and the IP addresses of the content publishing servers they are authorized to access.

4. The method for controlling content on outdoor large screens according to claim 1, characterized in that: The content update window period includes a fixed periodic window period and a temporary trigger window period; the duration of the window period is determined based on the amount of data in the content to be updated and the network transmission rate.

5. The method for controlling content on outdoor large screens according to claim 1, characterized in that: The remote power control module (4) includes: A communication unit (41) is used to establish and maintain a communication connection with the control platform (1); The power switch unit (42) is used to receive instructions from the control platform (1) and perform the power on / off operation of the display screen. The status monitoring unit (43) is used to collect electrical parameters of the power supply line and feed them back to the control platform (1).

6. The method for controlling content on outdoor large screens according to claim 1, characterized in that: The abnormal content release report or security threat signal includes at least one of the following: The signals are manually reported and submitted by the management personnel through the control platform (1); The automatic identification signal is generated by the image acquisition and AI recognition module built into the display screen when it identifies content that matches the preset database of inappropriate information features. The security monitoring signal is triggered by the security protection software installed on the local terminal when malicious operations are detected.

7. The method for controlling content on outdoor large screens according to claim 1, characterized in that: The following supplementary steps are included after S4: S41: The control platform (1) pushes a power cut-off notification to at least one preset management personnel terminal; S42: Initiate the anomaly investigation process and submit the investigation report through the management platform (1) after the investigation is completed; S43: After confirming that the abnormality has been eliminated, the management platform (1) issues a power restoration command, and the remote power control module (4) responds to the command to restore power supply.

8. The method for controlling content on outdoor large screens according to claim 1, characterized in that: The steps of recording the control log also include: recording network connection blocking statistics and content update success rate for remote content publishing mode, and / or recording power control trigger frequency and abnormal cause classification statistics for local terminal publishing mode.

9. The method for controlling content on outdoor large screens according to claim 1, characterized in that: The warning signal includes the unique device identifier of the content display box (2) that initiated the network connection request, the target server IP address, the request time, the cumulative number of requests, and the reason for blocking; the management platform (1) stores the warning signal in association with the management log.

10. An outdoor large screen content management system, used to implement the outdoor large screen content management method as described in any one of claims 1 to 9, characterized in that, include: The control platform (1), content display box (2), centralized firewall (3), remote power control module (4), memory (5) and processor (6); The control platform (1) is communicatively connected to the content display box (2), the centralized firewall (3) and the remote power control module (4) respectively, and is used to send control commands and receive status information, and to generate early warning signals and record control logs; The content display box (2) is network connected to the centralized firewall (3) and is used to initiate a network connection request to the firewall and obtain display content from the content publishing server after the request is approved. The centralized firewall (3) is deployed on the network path between the content display box (2) and the content publishing server. It is used to perform mapping verification based on the combination of a unique device identifier and the target server IP address on the network connection request, and to perform window period control and abnormal connection warning. The centralized firewall (3) is used to open the network connection when the mapping verification passes and the current time is within the content update window period, and to block the network connection when the mapping verification fails or the current time is outside the window period. The remote power control module (4) is connected in series to the main power line of the outdoor screen and communicates with the management platform (1) to receive and execute its power on / off commands, and at the same time, feedback the power status. The memory (5) is connected to the processor (6). The memory (5) stores computer-readable instructions. When the computer-readable instructions are executed by the processor (6), they control the management platform (1), the content display box (2), the centralized firewall (3), and the remote power control module (4) to work together to realize the outdoor large screen content management method as described in any one of claims 1 to 9.

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