An integrated intelligent conference terminal, system and mode switching method

Abstract

The application relates to the technical field of conference terminals, in particular to an integrated intelligent conference terminal, a system and a mode switching method, the terminal comprising a central control module, a first and a second logically isolated processing system, a first and a second physically isolated network module, a video signal matrix module and an audio processing module. The central control module is connected with each module as a control core, responds to a one-key scene switching instruction issued by a user through an operation panel, cooperatively executes full-process synchronous control including processing system start-stop, network module physical on-off, video signal routing switching and audio stream reconfiguration, and realizes fast, safe and seamless switching between different security level scenes such as Internet conference and intranet dedicated line conference. Through hardware deep integration and intelligent centralized control, the application solves the problems of complex device deployment, complicated operation, difficult security and convenience in the prior art, has the advantages of simplified deployment, improved experience, ensured safety and adaptability to multiple scenes.

Description

Technical Field

[0001] This invention relates to the field of conference terminal technology, specifically to an integrated intelligent conference terminal, system, and mode switching method. Background Technology

[0002] In environments with high cybersecurity requirements, such as government agencies, enterprises, and financial institutions, there is often a need to simultaneously support general internet-based conferencing (e.g., Tencent Meeting, iGuowang Meeting) and high-security internal private network conferencing (e.g., specific government or industry-specific internal meeting systems). Traditional solutions have the following main shortcomings: Deployment is complex and costly: It typically uses two completely independent devices connected to different networks, resulting in a large number of devices, complex cabling, large space occupation, and high maintenance costs.

[0003] Cumbersome operation and fragmented experience: Users need to manually switch between peripheral devices such as monitors and audio devices between different devices. The operation steps are numerous, prone to errors, and the switching process may cause the meeting to be interrupted or audio and video to be out of sync.

[0004] Security and convenience are difficult to balance: To ensure intranet security, strict physical isolation measures are usually adopted, but this further increases the complexity of operation. Although there are solutions that switch between the computer's intranet and intranet systems via a physical switch (as described in the comparative document CN101977179A), these require restarting the device, which cannot meet the needs of fast and seamless switching in meeting scenarios, and does not solve the problem of unified scheduling of audio and video signals required for meetings.

[0005] Lack of intelligent collaboration: Existing solutions lack an intelligent control core that can unify and coordinate computing systems, network connections, and audio and video signal routing, resulting in poor collaboration between modules.

[0006] Therefore, there is an urgent need for a conference terminal solution that can integrate multiple systems and network access capabilities within a single device, and enable one-click intelligent, secure, and seamless switching. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an integrated intelligent conference terminal, system, and mode switching method. It highly integrates processing systems, network modules, and audio / video processing modules that support different network environments into a single device, and achieves intelligent collaborative control of all sub-modules through a central control module. This simplifies deployment and operation, and enables fast, convenient, and seamless switching between different conference scenarios while ensuring high-level network security isolation.

[0008] This invention is achieved through the following technical solution: In a first aspect, the present invention provides an integrated intelligent conference terminal, including a chassis; and further including a central control module, a first processing system, a second processing system, a first network module, a second network module, a video signal matrix module and an audio processing module disposed within the chassis.

[0009] The central control module is communicatively connected to the first processing system, the second processing system, the first network module, the second network module, the video signal matrix module, and the audio processing module, and is used to coordinate and control the synchronous state switching of each module according to the received mode switching instructions.

[0010] The first network module is connected to the first processing system and is used to access a first-security-level network (such as the Internet). The second network module is connected to the second processing system and is used to access a second-security-level network (such as an internal private network). The first network module and the second network module are physically isolated to eliminate the risk of data crosstalk at the hardware level.

[0011] The video signal matrix module has a video input interface at its input end and a video output interface at its output end, used to switch the video signal from the first processing system or the second processing system to the video output interface under the control of the central control module. The audio processing module has audio input and output interfaces, used to process and route the audio signals from the first processing system or the second processing system.

[0012] Preferably, the video signal matrix module adopts a plug-in card structure, and the number of its input and output interfaces can be expanded by adding or removing cards. The motherboard, CPU, or memory used in the first processing system and / or the second processing system adopts a pluggable modular design, supporting flexible replacement and upgrades.

[0013] Furthermore, the central control module can be programmed with personalized logic through a programming interface to adapt to different device linkage timings, scene switching logic, or security strategies.

[0014] The video output interfaces, audio input / output interfaces, and device management interfaces on the chassis of this solution support the simultaneous connection and management of multiple external display devices, audio acquisition and playback devices, and environmental control devices. Its overall hardware configuration and interface expansion capabilities are suitable for application scenarios of varying sizes and security levels, ranging from small conference rooms and large training rooms to confidential conference rooms.

[0015] Furthermore, the first processing system and the second processing system are logically isolated from each other and can be installed on independent storage units. The central control module is configured to control only one of the first and second processing systems to be running when switching execution modes.

[0016] Furthermore, the central control module is connected to a user operation panel, which is equipped with at least one scene switching control (such as a physical button or a virtual button on a touchscreen). The scene switching control is configured to send a mode switching instruction containing the target meeting scene (such as "Internet Meeting" or "Internal Network Private Line Meeting") to the central control module when triggered.

[0017] The central control module responds to commands by executing a series of coordinated operations. When switching to an internet conferencing scenario, it controls the startup of the first processing system, activates the first network module, controls the video signal matrix module to route the video signal from the first processing system, and configures the audio processing module to connect to the audio stream from the first processing system. When switching to an intranet dedicated line conferencing scenario, it controls the startup of the second processing system, activates the second network module, controls the first network module to disconnect its physical connection, controls the video signal matrix module to route the video signal from the second processing system, and configures the audio processing module to connect to the audio stream from the second processing system.

[0018] Furthermore, the central control module can be configured to have policy execution capabilities, monitor the conference applications running in the system, and automatically trigger a switch to intranet mode based on preset application-network policies (when a specific intranet conference application is detected), and forcibly lock the internet module to a disconnected state to prevent security risks caused by human error. The terminal may also include a device management interface for connecting and controlling external devices (cameras, monitor power supplies) to achieve broader scenario-based control.

[0019] Secondly, the present invention provides a conference system, including an integrated intelligent conference terminal, a display device connected to its video output interface, and an audio acquisition and playback device connected to its audio input and output interface.

[0020] Thirdly, this invention provides a mode switching method based on an integrated conference terminal, applied to an integrated smart conference terminal. The method includes: receiving a mode switching command through a central control module; in response to the command, the central control module collaboratively performs the following operations: controlling one of the first and second processing systems to start, and the other to stop or go into standby mode; controlling the activation of the network module corresponding to the started system, and ensuring physical isolation between the two network modules; controlling the video signal matrix module to route the video signal of the started system to the output interface; and controlling the audio processing module to process and route the audio signal of the started system. The method may further include automatic policy triggering and forced locking steps based on application recognition.

[0021] The beneficial effects of this invention are: I. High integration, simplified deployment and cost: The core hardware required for the two conference systems is integrated into a single chassis, which greatly reduces the number of devices, wiring complexity and space occupation, and lowers the overall purchase and maintenance costs.

[0022] 2. One-click intelligent switching enhances the user experience: Through the intelligent scheduling of the user operation panel (one-click scene control) and the central control module, users do not need to worry about the complex underlying network, system, and signal switching process, and can quickly and seamlessly switch between different meeting scenarios, which greatly improves convenience and work efficiency.

[0023] 3. Hardware-level physical isolation, safe and reliable: The dual network modules adopt a physical isolation design, combined with the forced locking function of the central control module, to ensure that there is no data path between the high-security intranet and the Internet, fundamentally meeting the needs of scenarios involving classified information or high security requirements.

[0024] IV. Centralized and coordinated control to ensure system consistency: The central control module acts as the "brain" to coordinate the synchronous actions of all sub-modules, avoiding problems such as audio-visual asynchrony and inconsistent device status that are prone to occur in traditional manual switching of multiple devices, thus ensuring the smoothness and professionalism of the meeting.

[0025] V. Strategic Automated Management to Prevent Human Risks: It can automatically execute predetermined network switching and security policies based on the launched application, effectively preventing security risks caused by user operation errors and realizing the automated and intelligent execution of security policies. Attached Figure Description

[0026] Figure 1 This is a hardware architecture block diagram of the integrated intelligent conference terminal of the present invention.

[0027] Figure 2 This is a control flowchart for the central control module of the present invention, showing the execution mode switching. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Example

[0029] The hardware architecture of the integrated smart conference terminal, such as Figure 1 As shown, the integrated smart conference terminal in this embodiment includes a standard rack-mount chassis. The chassis integrates and installs: Central Control Module: An embedded control board is used; in this embodiment, an embedded industrial control board based on an ARM Cortex-A series processor is employed. This board runs a real-time operating system and is configured with a rich set of physical interfaces, including multiple general-purpose input / output (GPIO) interfaces, multiple UART serial communication interfaces, a USB host interface, and a dedicated network management port. This module is responsible for receiving external instructions and sending control commands to all other modules, coordinating their synchronous actions.

[0030] The first and second processing systems are two completely independent and logically isolated computing units. This embodiment uses two identical x86 architecture industrial motherboards (Motherboard A and Motherboard B). Each motherboard is equipped with a CPU and memory, and each is connected to an independent solid-state drive (SSD). Motherboard A is defined as an "Internet conferencing system," with a general-purpose operating system (such as Windows 10 IoT) and Internet conferencing client software such as Tencent Meeting installed on its SSD. Motherboard B is defined as an "internal network dedicated line conferencing system," with a security-hardened domestic operating system and a specific internal network video conferencing client (such as "Yidiantong") installed on its SSD. The power switch control pin (PW_SW) and power status indicator pin (PWR_LED) of both motherboards are connected to the GPIO of the central control module to achieve remote power on / off and status monitoring.

[0031] The first network module and the second network module are physically independent network interfaces. The first network module is a PCIe Gigabit Ethernet card installed on motherboard A, with its RJ45 port labeled "INTERNET," used to connect to the public internet. The second network module is another independent PCIe Gigabit Ethernet card installed on motherboard B, with its RJ45 port labeled "INTRANET," used to connect to the internal high-security private network. To ensure absolute security, the two network cards have no electrical connection in terms of circuit board wiring or rear chassis interface layout, achieving hardware-level physical isolation. The central control module controls the on / off state of the network cable connected to the second network module through a relay board, with the relay coil controlled by the central control module's GPIO.

[0032] Video signal matrix module: A multi-input, multi-output HDMI matrix switcher is used. This embodiment employs a matrix switcher supporting at least two HDMI inputs and one HDMI output. Its HDMI input ports IN1 and IN2 are connected to the graphics card output interfaces of motherboard A and motherboard B, respectively, via HDMI cables. Its HDMI output port (OUT) is connected to the main video output interface on the rear panel of the chassis. The matrix switcher provides an RS-232 serial control port, which connects to a UART interface of the central control module for receiving video channel switching commands.

[0033] Audio Processing Module: This embodiment uses an audio digital signal processor (DSP) chip as the core of its audio processing board. This board provides analog microphone input (XLR / TRS composite interface), analog line output interface, and connects to motherboards A and B via USB audio protocol to exchange digital audio streams. Simultaneously, this audio processing board communicates with the central control module through another UART interface, receiving configuration commands from the central control module for parameters such as audio routing, gain adjustment, and echo cancellation.

[0034] User control panel: Located on the front panel of the chassis, this embodiment uses a 7-inch capacitive touchscreen. The screen software interface features two prominent virtual buttons labeled "Internet Meeting" and "Internal Network Dedicated Line Meeting," respectively. The touchscreen connects to the central control module via a USB interface to receive and upload user touch commands.

[0035] Work processes, such as Figure 2 As shown: When a user needs to switch from the current state (e.g., standby) to internet conferencing mode, the collaborative workflow is as follows: Step S201: The user touches the "Internet Meeting" button on the front panel with their finger.

[0036] Step S202: The touch screen detects a touch event and sends a predefined instruction code (such as MODE_INTERNET) to the central control module via USB.

[0037] Step S203: The central control module parses the instructions and begins executing the coordinated control sequence: S2031 (System Control): Sends a 500ms low-level pulse (simulating a power-off button) to the PW_SW pin of motherboard B via GPIO to ensure it enters the power-off state. Subsequently, sends a momentary low-level pulse (simulating a power-on button) to the PW_SW pin of motherboard A via GPIO to start motherboard A.

[0038] S2032 (Network Control): Controls a relay to disconnect via GPIO, thereby physically severing the network cable connection of the second network module (internal network). The first network module (Internet) remains connected.

[0039] S2033 (Video Control): Sends the ASCII string command SWITCH 1\r\n to the video signal matrix module via the RS-232 serial port, instructing it to switch its output to input channel 1 connected to motherboard A.

[0040] S2034 (Audio Control): Sends the configuration command ROUTE USB_AEC_ON\r\n to the audio processing module via UART, instructing it to switch the audio input / output routing to the USB audio stream connected to motherboard A and enable echo cancellation.

[0041] Step S204: The central control module cyclically queries the status of each module (such as reading the PWR_LED status of motherboard A and checking the matrix return value). After confirming that all actions have been executed successfully, the front panel touch screen displays that the Internet conference mode is ready.

[0042] At this point, the user can see the system desktop of motherboard A on the connected monitor and use the internet conferencing software normally, with the audio equipment also ready. The entire switching process is completed automatically within seconds, without the user needing to operate any underlying devices.

[0043] When switching to an intranet conference, the user touches the "Intranet Dedicated Line Conference" button, and the central control module performs the reverse process: shuts down motherboard A and starts motherboard B; disconnects the physical connection of the Internet network card and activates the intranet network card; switches the video matrix routing to motherboard B; and reconfigures the audio processor to connect to motherboard B. Example

[0044] Based on Example 1, this example further optimizes the scalability, flexibility and adaptability of the device.

[0045] Scalable Video / Audio Matrix: The video signal matrix module adopts a plug-in card structure. Its main body is a bus chassis with a high-speed backplane, supporting the insertion of various types of input / output cards. For example, it can accommodate HDMI 2.0 input cards, HDMI 2.0 output cards, SDI input cards, VGA input cards, etc. Users can flexibly add or remove cards according to the actual number of signal sources and display devices in the conference room, easily adapting the terminal to everything from small conference rooms with only one display screen to large training rooms with multiple cameras and multiple displays. The audio processing module can also adopt a DSP platform plus plug-in card design to support more microphone inputs and audio zone outputs.

[0046] Programmable Central Control Module: The central control module provides an open programming interface. On one hand, it offers a web-based graphical configuration interface, allowing integrators to drag and drop components and configure complex scenario logic such as "when the 'Internal Conference' button is pressed, the projector power is turned on and the lights are switched to conference mode." On the other hand, it provides a RESTful API or Python scripting environment, allowing advanced users to write custom logic to achieve deep integration with meeting room booking systems and access control systems, meeting highly personalized meeting needs.

[0047] The core hardware is upgradeable: the motherboards used by the first and second processing systems adopt a modular design (such as COM Express modules). The computing core (CPU, memory, storage) is integrated on a pluggable daughter card, while the interfaces (video output, USB, network, etc.) are located on the carrier board. When future performance upgrades are needed, only the daughter card needs to be replaced, without replacing the entire terminal device, thus protecting the user's investment.

[0048] Abundant device interfaces: In addition to the network, video, and audio interfaces described in Example 1, the rear panel of the chassis also integrates a variety of control and expansion interfaces, including: Multiple HDMI output ports: can be connected to the main monitor, secondary monitor and recording host at the same time.

[0049] RS-232 / RS-485 serial interface: used to control external devices such as projectors, LCD screen lifts, and camera pan / tilt units.

[0050] Infrared transmitter: Used to control infrared devices such as televisions and air conditioners.

[0051] Relay dry contact output: used to control electric curtain lifting, power sequencers, etc.

[0052] USB Host Interface: Used to connect peripherals such as wireless microphone receivers, cameras, and dongles.

[0053] These rich interfaces enable this terminal to become the control center for all audio-visual equipment in the entire conference room, making it suitable for various complex scenarios. Example

[0054] A background service called "Policy Daemon" runs within the central control module. This service maintains a configurable "security policy library." The policy library contains several policy rules, each of which includes at least two parts: "triggering conditions" and "actions to be performed."

[0055] For example, a typical policy rule is: Triggering condition: An application named "ConfidentialMeeting.exe" (a confidential intranet meeting client) is detected to be running in the current activity processing system.

[0056] Perform the following actions: 1) Automatically trigger the switching process to intranet dedicated line conference mode (as described in Example 1); 2) After the switch is complete, gray out the "Internet Meeting" button on the front panel to disable it, and lock the physical relay of the first network module (Internet) in the off state.

[0057] The specific execution process is as follows: Monitoring: The policy daemon polls the list of processes of the currently active processing system (assuming it is initially an Internet system) at a preset period (e.g., every second) through the network management port of the central control module.

[0058] Identification and Judgment: When "ConfidentialMeeting.exe" appears in the process list during polling, the above policy rule is immediately applied.

[0059] Automatic execution: The central control module no longer waits for manual operation by the user, automatically generates a mode switching command, and immediately executes the complete collaborative switching process from Internet mode to intranet leased line mode (S2031~S2034).

[0060] Forced Lockout: After the switchover is complete, the central control module sends a command to the front-end touchscreen to set the "Internet Conference" button to an unclickable state. Simultaneously, its software logic will ignore any commands attempting to connect to the physical relay of the first network module, thus creating a software lockout. This lockout can only be lifted by a user with administrator privileges through password verification.

[0061] This implementation ensures that once a user launches a high-security application, the system automatically enters and locks into a secure network environment, completely eliminating the risk of internal network devices being mistakenly connected to the internet due to user negligence. This is particularly suitable for scenarios with extremely high security requirements, such as confidential conference rooms. It effectively prevents the risk of unauthorized network connections caused by accidental button presses during internal network meetings. Example

[0062] A conference system includes an integrated smart conference terminal as described in Embodiment 1 or 2. The terminal's video output interface is connected to a large LCD display via an HDMI cable. Its audio input interface is connected to an omnidirectional microphone, and its audio output interface is connected to a conference sound system. Users can control the entire system to switch between different conference scenarios via the terminal's front panel, without requiring any manual modification to any peripheral equipment. Example

[0063] A mode switching method based on an integrated smart conference terminal includes the following steps: S101: The central control module receives mode switching instructions. The instructions can be manually triggered by the user's operation panel or automatically triggered by the built-in policy engine (such as when a specific application is detected to be starting up in step S100).

[0064] S102: Command parsing, determining the target scenario (Internet or intranet leased line).

[0065] S103: Cooperative Control Process: S1031: Control the target processing system to start and ensure that the non-target processing system is shut down.

[0066] S1032: Control the activation of the target network module and ensure that the non-target network module is physically disconnected.

[0067] S1033: Controls the video signal matrix module to switch the signal routing to the target processing system.

[0068] S1034: Controls the audio processing module to switch the audio stream route to the target processing system.

[0069] S104: Switching complete, the system is now running stably in the target scenario. Example

[0070] This embodiment uses a multi-functional confidential conference room in a municipal government service center as an example to demonstrate the deployment and usage process of the integrated intelligent conference terminal of this invention. The conference room must simultaneously meet the following requirements: 1) Regularly hold ordinary video conferences connected to the internet (such as Tencent Meeting with the public and enterprises); 2) Hold internal video conferences involving sensitive information on an irregular basis (such as cross-departmental collaborative command and dispatch meetings held through the government intranet "One-Stop" system).

[0071] 1. Deployment and Connection Conference management personnel install the integrated intelligent conference terminal of the present invention (using the extended configuration of Embodiment 2) in the conference room cabinet.

[0072] Network connection: Connect the terminal's "INTERNET" port to the Internet access switch in the conference room; connect the "INTRANET" port to the government intranet access point through a separate, physically isolated cable.

[0073] Display device connection: Connect the terminal's main HDMI output port to the main display screen in the conference room (an 86-inch smart conference tablet); connect the extended second HDMI output port to the auxiliary display screen on the side.

[0074] Audio equipment connection: Connect the terminal's microphone input interface to the eight digital microphone array embedded in the conference table; connect the audio output interface to the conference room's professional sound system.

[0075] Environmental equipment connection: Connect the RS-232 interface of the terminal to the power and control port of the main display screen; connect the relay interface to the controller of the electric curtain.

[0076] 2. Pre-meeting preparations and meeting commencement Holding an online public meeting: After participants enter the room, the meeting host walks to the front panel of the terminal and touches the virtual "Internet Meeting" button. The central control module then executes the collaborative control process described in Example 1: starting the internet processing system, activating the internet network, switching the video signal to the internet system desktop, and routing the audio. The entire process takes approximately 15 seconds. Subsequently, the Windows desktop appears on the main display screen, and the host can double-click the Tencent Meeting icon to establish a video connection with external units. The microphones and speakers in the meeting room function normally, and the electric curtains can be adjusted by the host with a single click through preset scenarios on the central control web interface as needed.

[0077] Emergency Switch to Internal Network for Secure Meeting: In the middle of an internet meeting, a notification suddenly arrives requiring immediate access to the government's internal network for an emergency coordination meeting. Traditional solutions involve manually unplugging and plugging network cables, switching monitor input sources, and changing meeting equipment—a chaotic and error-prone process. With this invention, the host simply needs to walk back to the terminal and tap the "Internal Network Dedicated Line Meeting" button.

[0078] 3. One-click intelligent and safe switching Upon user triggering, the central control module automatically performs the following seamless switch: Silently close Tencent Meeting and the system on the internet to avoid data residue.

[0079] Physically disconnect the internet network connection (via an internal relay) to ensure that the internet link is disconnected at the hardware level during intranet meetings.

[0080] The dedicated intranet processing system is started and automatically logged into the "One-Click" meeting client.

[0081] Seamlessly switch video and audio signals to the intranet system.

[0082] Keep all external microphones, speakers, and display devices connected and operational.

[0083] Results: After a brief blackout (approximately 3 seconds), the main display screen directly shows the login interface or meeting room list for the government intranet "One-Stop" meeting. Participants do not need to change seats, operate any cables or equipment, and meeting support personnel do not need to enter the room. Audio equipment operates continuously, ensuring an uninterrupted meeting room environment. Security and convenience are perfectly combined.

[0084] 4. Application of automated security policies When the intranet "One-Stop" conference client is launched, the "Policy Daemon" (Example 3) within the central control module is immediately triggered. It executes a preset mandatory security policy: graying out and locking the "Internet Conference" button on the front panel, and simultaneously locking the physical relay of the internet network, preventing it from being connected during the meeting. This function completely eliminates the serious security risk of someone accidentally pressing the "Internet Conference" button during an intranet meeting, causing a single machine to cross between two networks, thus meeting the highest security requirement of "no network cross-connection under any circumstances" for confidential conference rooms. The policy lock status needs to be unlocked by the administrator swiping a card or entering a password after the meeting.

[0085] 5. Post-meeting summary After the meeting, the host pressed the "Power Off" button on the front panel of the terminal. The central control module sequentially shut down all processing systems, turned off the main display screen via the RS-232 interface, and switched off the audio system power via a relay, achieving a one-button shutdown of all devices, saving energy and extending equipment life.

[0086] As can be seen from this embodiment, the integrated intelligent conference terminal of the present invention successfully solves the core pain point of this government conference room: Simplify complexity: The process that originally required two separate sets of equipment and complicated manual switching has been simplified to "one-click operation".

[0087] Safe and reliable: Through physical hardware isolation and software policy locking, an insurmountable security barrier is built during intranet meetings.

[0088] Superior Experience: Seamless, fast, and transparent switching between meetings with different security levels ensures the seriousness and smoothness of meetings, greatly improving meeting efficiency and user experience.

[0089] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. An integrated intelligent conference terminal, comprising a chassis; characterized in that: Also includes: The central control module, first processing system, second processing system, first network module, second network module, video signal matrix module, and audio processing module are installed inside the chassis. in: The central control module is communicatively connected to the first processing system, the second processing system, the first network module, the second network module, the video signal matrix module, and the audio processing module, respectively, and is used to coordinate and control the synchronous state switching of each module according to the received mode switching command. The first network module is connected to the first processing system and is used to access a first security level network; The second network module is connected to the second processing system and is used to access the second security level network. The first network module and the second network module are physically isolated. The input end of the video signal matrix module is connected to a video input interface, and the output end is connected to a video output interface. It is used to switch the video signal of the first processing system or the second processing system to the video output interface under the control of the central control module. The audio processing module is connected to an audio input / output interface for processing and routing audio signals from the first or second processing system.

2. The integrated intelligent conference terminal according to claim 1, characterized in that: The first processing system and the second processing system are logically isolated from each other and are installed on independent storage units; and, The central control module is configured to control only one of the first and second processing systems to be running when switching execution modes.

3. The integrated intelligent conference terminal according to claim 1, characterized in that: The first network module is an Internet access module, and the second network module is an internal private network access module. The two are connected by physically independent network interfaces and cables.

4. The integrated intelligent conference terminal according to claim 1, characterized in that: The central control module is connected to a user operation panel, which is equipped with at least one scene switching control. The scene switching control is configured to send a mode switching instruction containing the target meeting scene to the central control module when triggered.

5. The integrated intelligent conference terminal according to claim 4, characterized in that: The target meeting scenarios include internet meeting scenarios and intranet dedicated line meeting scenarios; When the target meeting scenario is an internet meeting scenario, the mode switching command is used to trigger the central control module to perform the following collaborative operations: start the first processing system, activate the first network module, control the video signal matrix module to route the video signal of the first processing system to the output end, and configure the audio processing module to connect to the audio stream of the first processing system; When the target meeting scenario is an intranet leased line meeting scenario, the mode switching command is used to trigger the central control module to perform the following collaborative operations: start the second processing system, activate the second network module and control the first network module to disconnect the physical connection, control the video signal matrix module to route the video signal of the second processing system to the output end, and configure the audio processing module to connect to the audio stream of the second processing system.

6. The integrated intelligent conference terminal according to claim 1, characterized in that: The central control module is also configured to: monitor the conference application launched in the first or second processing system; automatically trigger the corresponding mode switch according to the preset application-network policy, and lock the first network module and / or the second network module in the corresponding state.

7. The integrated intelligent conference terminal according to any one of claims 1 to 6, characterized in that: It also includes a device management interface for connecting external controlled devices; the central control module also sends linkage control signals to external controlled devices through the device management interface when switching modes.

8. A conference system, characterized in that, include: The integrated intelligent conference terminal as described in any one of claims 1 to 7; The display device is connected to the video output interface of the video signal matrix module; Audio acquisition and playback device, connected to the audio input / output interface of the audio processing module.

9. A mode switching method based on an integrated intelligent conference terminal, applied to the integrated intelligent conference terminal as described in any one of claims 1 to 7, characterized in that: The methods include: The central control module receives mode switching instructions, which in turn indicate the target meeting scenario. In response to the mode switching command, the central control module coordinates the following operations: Controls the startup of one of the first and second processing systems, and the shutdown or standby of the other; The network module corresponding to the control and startup processing system is activated, and the first network module and the second network module are physically isolated. The control video signal matrix module routes the video signal of the activated processing system to the video output interface; Control the audio processing module to process and route the audio signals of the initiated processing system.

10. The mode switching method according to claim 9, characterized in that: Before receiving the mode switching command, it also includes: The central control module monitors applications launched in the running processing system. If the application is identified as a preset high-security level 4 application, an instruction to switch to the intranet dedicated line conference scenario will be automatically generated, and the first network module will be forcibly locked into a disconnected state.

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