Networking mode of complex scene video conference

Abstract

The invention discloses a networking mode of a complex scene video conference, and relates to the technical field of video conference methods. According to the networking mode of the complex scene video conference, a plurality of video conference terminals are deployed in a local main conference place, a superior unit conference and a local branch conference place conference are connected through a special line and an MCU, a back-to-back audio and video channel is constructed, and efficient and stable interconnection is achieved; hDMI cable lossless transmission is adopted, and the audio and video quality is guaranteed through a double-current separation transmission channel; a mobile conference unit comprising a mobile trolley is arranged, wireless access is supported, the code rate is dynamically adjusted in displacement, networks are automatically switched, and conference continuity is ensured; and the operation convenience and the information display comprehensiveness are improved by utilizing a hierarchical operation interface of the SMC control platform and cooperating with a multi-preset-position camera, a picture-in-picture mode and the like. The networking mode significantly improves the efficiency, quality and user experience of the video conference in a complex scene, and meets diversified conference requirements.

Description

Technical Field

[0001] This invention relates to the field of video conferencing methods, specifically a networking method for video conferencing in complex scenarios. Background Technology

[0002] With the widespread application of video conferencing technology across various industries, meeting scenarios are becoming increasingly complex and diverse. Large enterprises, government agencies, and other organizations often need to hold complex video conferences involving multiple levels, multiple locations, and various content presentations.

[0003] Traditional video conferencing networking methods have many limitations. First, when a higher-level unit needs to inspect multiple areas of the unit, the unit usually only has one video conferencing terminal connected to the higher-level unit via a dedicated line, making it impossible to transmit audio and video images of multiple areas to be inspected to the higher-level unit simultaneously.

[0004] Secondly, it is also difficult to flexibly transmit the audio and video images sent by the superior unit to various branch venues.

[0005] Third, existing technologies also have shortcomings in terms of the flexibility of meeting control, the clarity of presentation content, and the diversity of branch venue displays, making it difficult to meet the needs of efficient, flexible, and high-quality video conferencing in complex scenarios. To address these shortcomings, this invention provides a networking method for video conferencing in complex scenarios to solve the aforementioned problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a networking method for video conferencing in complex scenarios. By rationally configuring multiple video conferencing terminals and employing back-to-back connections, it enables simultaneous participation from multiple venues and flexible content control, effectively utilizing limited video conferencing terminal resources to meet diverse meeting needs in complex scenarios. Separate access to presentation devices and the use of a dedicated master input mode ensure high-quality presentation of content, enhancing the meeting's display effect. Furthermore, the deployment of mobile meeting units and dynamic adjustment of video encoding bitrate enhance the presentation capabilities of sub-venues and the adaptability of the meeting, making the entire video conferencing system more efficient, flexible, and stable in complex scenarios. This provides strong technical support for remote inspections and coordination meetings between large enterprises and higher-level units.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a networking method for video conferencing in complex scenarios, comprising:

[0008] Step S1: Deploy the first video conferencing terminal and the second video conferencing terminal at the local main venue;

[0009] Step S2: Connect the first video conferencing terminal to the meeting of the superior unit via a dedicated line, and connect the second video conferencing terminal to multiple local branch venues via an MCU;

[0010] Step S3: Connect the main output interface of the first terminal directly to the main input interface of the second terminal, and at the same time connect the main output interface of the second terminal directly to the main input interface of the first terminal to form a back-to-back audio and video channel.

[0011] Step S4: Deploy a third video conferencing terminal in the local main venue, connect to the local MCU conference, and configure multiple daisy-chain microphones and adjustable preset camera positions.

[0012] Step S5: Connect the main output of the main venue demonstration device to the fourth video conferencing terminal separately, and connect it to the local MCU conference as an independent node;

[0013] Step S6: Dynamically select the video source to be sent to the superior unit through the SMC control platform. The video source includes the main venue screen, the sub-venue screen, the demonstration content and their combination screen.

[0014] Preferably, in step S3, the back-to-back connection uses an HDMI cable to achieve lossless audio and video transmission.

[0015] Preferably, the fourth video conferencing terminal accesses the demonstration device in a main input exclusive mode to avoid the encoding, decoding, and compression of the auxiliary input channel.

[0016] Preferably, the local sub-venue includes a mobile conference unit, which consists of a video conferencing terminal, a display screen, redundant network cables and power cords installed on a mobile vehicle, and supports dynamic displacement within the physical space.

[0017] Preferably, the mobile conference unit accesses the local MCU conference via a wireless AP, and maintains the conference connection during the relocation process.

[0018] Preferably, the mobile conferencing unit monitors the wireless signal strength in real time during the displacement process and dynamically adjusts the video encoding bitrate according to the displacement distance. Specifically, the target bitrate is calculated using the following formula:

[0019]

[0020] in:

[0021] R base The initial encoding bitrate (unit: Mbps) is set according to the venue resolution;

[0022] P rx Real-time received power (unit: dBm) for mobile units;

[0023] P thMinimum receive power threshold (in dBm) to maintain conference connectivity;

[0024] d represents the real-time distance between the mobile unit and the access point (AP) (in meters);

[0025] α is the environmental attenuation factor, with a value range of [0.02, 0.05], which is determined by the density of the venue wall material;

[0026] When R target <0.8R base When the signal is active, automatically switch to 5G cellular network and reset the code rate to R. base .

[0027] Preferably, the SMC control platform provides a hierarchical operation interface, with the first level controlling the switching of screens between local meeting rooms and the second level controlling the content uploaded to the superior unit.

[0028] Preferably, the third video conferencing terminal has ≥8 preset camera positions, covering all speaking seats in the main venue.

[0029] Preferably, when the presentation content is transmitted, the meeting screen of the superior unit automatically switches to the picture-in-picture mode in the local MCU meeting.

[0030] Preferably, a dual-stream separation transmission channel is deployed between the second video conferencing terminal and the local MCU, with the main channel transmitting the meeting video and the auxiliary channel transmitting the presentation data.

[0031] This invention discloses a networking method for video conferencing in complex scenarios, which has the following beneficial effects:

[0032] 1. This complex video conferencing network architecture, through the construction of a three-tier terminal connection structure and the use of HDMI cables for lossless audio and video transmission, as well as dual-stream separation transmission channels, effectively reduces signal latency, avoids video stuttering and signal interference, and ensures high-quality and stable transmission of meeting video and presentation data. Simultaneously, it supports multiple connection methods, enabling efficient and stable interconnection between meetings at different levels and locations in complex scenarios, meeting the connectivity needs of complex meeting environments.

[0033] 2. The networking method for this complex video conferencing scenario involves setting up mobile conferencing units in local branch venues, including mobile carts and video conferencing terminals. These units access the conference via wireless access points (APs) and maintain connectivity during relocation. Simultaneously, the video encoding bitrate is dynamically adjusted based on real-time monitoring of wireless signal strength and relocation distance. When the signal is weak, it automatically switches to a 5G cellular network, ensuring conference continuity and video transmission quality during relocation. This improves the reliability and user experience of mobile conferencing and meets the need for flexible relocation during meetings.

[0034] 3. In this complex video conferencing scenario, the SMC control platform provides a hierarchical operation interface, allowing operators to easily switch screens and control content according to different needs, improving operational convenience and relevance. The third video conferencing terminal is equipped with multiple preset camera positions, enabling quick and accurate capture of the speaker's view. Furthermore, during presentation content transmission, the superior unit's meeting screen automatically switches to picture-in-picture mode, allowing the superior unit to simultaneously understand the overall situation of the local meeting and the presentation content, enhancing the comprehensiveness of information display and improving the communication effectiveness of the meeting. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the video conferencing network of the present invention;

[0037] Figure 2 This is a schematic diagram of the network connection topology of the device of the present invention;

[0038] Figure 3 This is a schematic diagram of the dynamic bit rate control loop of the present invention;

[0039] Figure 4 This is a schematic diagram of the dual-stream parallel transmission mechanism of the present invention. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] This application provides a networking method for video conferencing in complex scenarios. Through innovative architecture design, multiple transmission technologies, and intelligent control methods, it effectively solves the problems of signal delay, video stuttering, unstable connection, insufficient mobile conferencing support, and inconvenient operation that exist in traditional video conferencing networks in complex scenarios. It achieves high-quality audio and video transmission, flexible meeting connection, reliable mobile conferencing experience, and convenient operation and comprehensive information display, significantly improving the efficiency, quality, and user experience of video conferencing in complex scenarios.

[0042] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0043] Example 1: This embodiment of the invention discloses a networking method for video conferencing in complex scenarios, according to the appendix... Figure 1-4 As shown, it includes:

[0044] Step S1: Deploy the first video conferencing terminal and the second video conferencing terminal at the local main venue;

[0045] Step S2: Connect the first video conferencing terminal to the meeting of the superior unit via a dedicated line, and connect the second video conferencing terminal to multiple local branch venues via MCU;

[0046] Step S3: Connect the main output interface of the first terminal directly to the main input interface of the second terminal, and at the same time connect the main output interface of the second terminal directly to the main input interface of the first terminal to form a back-to-back audio and video channel.

[0047] Step S4: Deploy a third video conferencing terminal in the local main venue, connect to the local MCU conference, and configure multiple daisy-chain microphones and adjustable preset camera positions.

[0048] Step S5: Connect the main output of the main venue demonstration device to the fourth video conferencing terminal separately, and connect it to the local MCU conference as an independent node;

[0049] Step S6: Dynamically select the video source to be sent to the superior unit through the SMC control platform. The video source includes the main venue screen, the sub-venue screen, the demonstration content and their combination screen.

[0050] Multiple video conferencing terminals are deployed at the local main venue. The first terminal is connected to the conference of the superior unit via a dedicated line. The second terminal is connected to multiple local branch venues via an MCU. The main output and main input interfaces of the first and second terminals are directly connected to form a back-to-back audio and video channel. Next, a third terminal is deployed to connect to the local MCU conference and the relevant equipment is configured. The main output of the demonstration device is connected to the fourth terminal as an independent node to connect to the local MCU conference. Finally, the video source to be sent to the superior unit is dynamically selected through the SMC control platform.

[0051] This method constructs a video conferencing network architecture for complex scenarios, enabling interconnection and interoperability between the local main venue and meetings at higher-level units, as well as between multiple local branch venues, and allowing flexible selection and transmission of various video sources. This method can adapt to the needs of video conferencing in complex scenarios, meeting the connection and image transmission requirements of different meeting scenarios, and improving the flexibility and efficiency of meetings.

[0052] In step S3, the back-to-back connection uses an HDMI cable to achieve lossless audio and video transmission, enabling lossless audio and video transmission between the first and second video conferencing terminals, ensuring audio and video quality, avoiding degradation of picture or sound quality due to signal loss during transmission, and improving the meeting experience.

[0053] The fourth video conferencing terminal connects to the presentation device in a dedicated main input mode, avoiding the encoding and decoding compression of the auxiliary input channel. This ensures that the presentation content can be transmitted in a high-quality, uncompressed manner, guaranteeing the clarity and accuracy of the presentation content and meeting the needs of scenarios with high presentation quality requirements.

[0054] The local branch venue includes a mobile conferencing unit, which consists of a video conferencing terminal, display screen, redundant network cables, and power cord installed on a mobile vehicle, supporting dynamic movement within the physical space. The mobile conferencing unit increases the flexibility of meetings, facilitating meetings in different locations and meeting the needs of scenarios requiring flexible relocation of meeting positions.

[0055] The SMC control platform provides a hierarchical user interface. The first level controls the switching of screens between local meeting rooms, while the second level controls content uploaded to higher-level units. This hierarchical interface enables control and management of meeting screens at different levels. It allows operators to easily switch screens and control content according to different needs, improving operational convenience and relevance.

[0056] The third video conferencing terminal has at least 8 preset camera positions, covering all speaking positions in the main venue. Multiple preset positions improve camera utilization, reduce the time and workload of manual camera adjustments, and enable rapid response to the needs of different speaking positions, ensuring smooth conferencing.

[0057] The third video conferencing terminal ensures that cameras can quickly and accurately capture images from each speaker's position in the main conference room. This improves the speed and accuracy of video feed switching, enabling smoother meetings while guaranteeing clear visibility of each speaker's position.

[0058] When presentation content is transmitted, the meeting screen of the superior unit automatically switches to picture-in-picture mode in the local MCU meeting. While transmitting the presentation content, the local meeting screen is simultaneously displayed, allowing the superior unit to easily understand the overall meeting situation. Picture-in-picture mode provides more comprehensive meeting information, enabling the superior unit to better participate in and understand the meeting content, thus improving the communication effectiveness of the meeting.

[0059] The second video conferencing terminal is connected to the local MCU via a dual-stream separation transmission channel. The main channel transmits the meeting video, while the auxiliary channel transmits the presentation data. This separates the transmission of the meeting video and the presentation data, preventing them from interfering with each other, ensuring the transmission quality and stability of both, and improving transmission efficiency to meet the transmission needs of different types of data.

[0060] Example 1: This embodiment of the invention discloses a networking method for video conferencing in complex scenarios, according to the appendix... Figure 1-4 As shown, it includes:

[0061] Step S1: Deploy the first video conferencing terminal and the second video conferencing terminal at the local main venue;

[0062] Step S2: Connect the first video conferencing terminal to the meeting of the superior unit via a dedicated line, and connect the second video conferencing terminal to multiple local branch venues via MCU;

[0063] Step S3: Connect the main output interface of the first terminal directly to the main input interface of the second terminal, and at the same time connect the main output interface of the second terminal directly to the main input interface of the first terminal to form a back-to-back audio and video channel.

[0064] Step S4: Deploy a third video conferencing terminal in the local main venue, connect to the local MCU conference, and configure multiple daisy-chain microphones and adjustable preset camera positions.

[0065] Step S5: Connect the main output of the main venue demonstration device to the fourth video conferencing terminal separately, and connect it to the local MCU conference as an independent node;

[0066] Step S6: Dynamically select the video source to be sent to the superior unit through the SMC control platform. The video source includes the main venue screen, the sub-venue screen, the demonstration content and their combination screen.

[0067] The fourth video conferencing terminal connects to the presentation device in a dedicated main input mode, avoiding the encoding and decoding compression of the auxiliary input channel. This ensures that the presentation content can be transmitted in a high-quality, uncompressed manner, guaranteeing the clarity and accuracy of the presentation content and meeting the needs of scenarios with high presentation quality requirements.

[0068] The local branch venue includes a mobile conferencing unit, which consists of a video conferencing terminal, display screen, redundant network cables, and power cord installed on a mobile vehicle, supporting dynamic movement within the physical space. The mobile conferencing unit increases the flexibility of meetings, facilitating meetings in different locations and meeting the needs of scenarios requiring flexible relocation of meeting positions.

[0069] The mobile conference unit connects to the local MCU conference via a wireless AP and maintains the conference connection during relocation, enabling continuous conference access while the mobile unit is on the move. This ensures conference continuity, preventing interruptions due to movement and improving conference stability and availability.

[0070] The mobile conferencing unit monitors the wireless signal strength in real time during its movement and dynamically adjusts the video encoding bitrate based on the distance traveled. The target bitrate is calculated using the following formula:

[0071]

[0072] in:

[0073] R base The initial encoding bitrate (unit: Mbps) is set according to the venue resolution;

[0074] P rx Real-time received power (unit: dBm) for mobile units;

[0075] P th Minimum receive power threshold (in dBm) to maintain conference connectivity;

[0076] d represents the real-time distance between the mobile unit and the access point (AP) (in meters);

[0077] α is the environmental attenuation factor, with a value range of [0.02, 0.05], which is determined by the density of the venue wall material;

[0078] When R target <0.8R base When the signal is active, automatically switch to 5G cellular network and reset the code rate to R. base .

[0079] The mobile conferencing unit dynamically adjusts the video encoding bitrate based on wireless signal strength and distance traveled, ensuring the quality and stability of video transmission. When the signal is weak or the distance is long, it maintains the conferencing connection by reducing the bitrate and switching networks, preventing video stuttering or interruptions and improving conferencing reliability.

[0080] This complex scenario video conferencing networking method, through innovative architecture design, multiple transmission technologies, and intelligent control methods, effectively solves the problems of signal delay, video stuttering, unstable connection, insufficient mobile conferencing support, and inconvenient operation that exist in traditional video conferencing networking in complex scenarios. It achieves high-quality audio and video transmission, flexible meeting connection, reliable mobile conferencing experience, and convenient operation and comprehensive information display, significantly improving the efficiency, quality, and user experience of video conferencing in complex scenarios.

[0081] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0082] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A networking method for video conferencing in complex scenarios, characterized in that, include: Step S1: Deploy the first video conferencing terminal and the second video conferencing terminal at the local main venue; Step S2: Connect the first video conferencing terminal to the meeting of the superior unit via a dedicated line, and connect the second video conferencing terminal to multiple local branch venues via an MCU; Step S3: Connect the main output interface of the first terminal directly to the main input interface of the second terminal, and at the same time connect the main output interface of the second terminal directly to the main input interface of the first terminal to form a back-to-back audio and video channel. Step S4: Deploy a third video conferencing terminal in the local main venue, connect to the local MCU conference, and configure multiple daisy-chain microphones and adjustable preset camera positions. Step S5: Connect the main output of the main venue demonstration device to the fourth video conferencing terminal separately, and connect it to the local MCU conference as an independent node; Step S6: Dynamically select the video source to be sent to the superior unit through the SMC control platform. The video source includes the main venue screen, the sub-venue screen, the demonstration content and their combination screen.

2. The networking method for video conferencing in complex scenarios according to claim 1, characterized in that, In step S3, the back-to-back connection uses an HDMI cable to achieve lossless audio and video transmission.

3. The networking method for video conferencing in complex scenarios according to claim 1, characterized in that, The fourth video conferencing terminal connects to the demonstration device in a main input exclusive mode to avoid the encoding, decoding and compression of the auxiliary input channel.

4. The networking method for video conferencing in complex scenarios according to claim 1, characterized in that, The local sub-venue includes a mobile conferencing unit, which consists of a video conferencing terminal, a display screen, redundant network cables, and power cords installed on a mobile vehicle, and supports dynamic displacement within the physical space.

5. The networking method for video conferencing in complex scenarios according to claim 4, characterized in that, The mobile conference unit accesses the local MCU conference via a wireless AP and maintains the conference connection during the relocation process.

6. The networking method for video conferencing in complex scenarios according to claim 5, characterized in that, The mobile conferencing unit monitors the wireless signal strength in real time during its displacement and dynamically adjusts the video encoding bitrate based on the displacement distance. Specifically, the target bitrate is calculated using the following formula: in: R base The initial encoding bitrate is set based on the venue resolution. P rx The mobile unit receives power in real time; P th The minimum receive power threshold for maintaining a conference connection; d represents the real-time distance between the mobile unit and the access point; α is the environmental attenuation factor, with a value range of [0.02, 0.05], which is determined by the density of the venue wall material; When R target <0.8R base When the signal is active, automatically switch to 5G cellular network and reset the code rate to R. base .

7. The networking method for video conferencing in complex scenarios according to claim 1, characterized in that, The SMC control platform provides a hierarchical operation interface. The first level controls the switching of screens between local meeting rooms, and the second level controls the content uploaded to the superior unit.

8. The networking method for video conferencing in complex scenarios according to claim 1, characterized in that, The third video conferencing terminal has ≥8 preset camera positions, covering all speaking positions in the main venue.

9. The networking method for video conferencing in complex scenarios according to claim 1, characterized in that, When the presentation content is transmitted, the meeting screen of the superior unit automatically switches to the picture-in-picture mode in the local MCU meeting.

10. The networking method for video conferencing in complex scenarios according to claim 1, characterized in that, The second video conferencing terminal is connected to the local MCU via a dual-stream separation transmission channel. The main channel transmits the video from the meeting room, while the auxiliary channel transmits the demonstration data.

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