A multimedia system integrating internal and external network video conferencing functions

Abstract

This invention relates to the field of multimedia technology and discloses a multimedia system integrating intranet and extranet video conferencing functions. The system includes: a first display, a second display, an intranet video conferencing terminal, an extranet video conferencing terminal, and a multimedia transmission system. The multimedia transmission system includes: a signal acquisition module for acquiring intranet video signals from the intranet video conferencing terminal and extranet video signals from the extranet video conferencing terminal; a signal processing module for processing the intranet and extranet video signals and setting the video signals to be received by the first and second displays according to the video conferencing content displayed on the first and second displays; and a signal output module for outputting the corresponding video signals to the first and second displays so that the first and second displays can display the video conference. This system integrates intranet and extranet video conferencing, reduces system complexity, and ensures stable and reliable operation.

Description

Technical Field

[0001] This invention relates to the field of multimedia technology, and in particular to a multimedia system that integrates internal and external network video conferencing functions. Background Technology

[0002] With the development of technology and the establishment of the concept of a global village, remote work is becoming increasingly common. To enable employees in different locations to hold meetings simultaneously, multimedia video conferencing systems have emerged. Multimedia presentation technology and video conferencing systems are now one of the main means of office informatization. However, due to network security requirements, internal and external network video conferencing systems cannot use the same device for broadcasting and holding. During video conferences, it is necessary to manually switch the input source of the monitor to display different meeting screens. Therefore, there is an urgent need for a multimedia system that integrates internal and external network video conferencing functions to achieve integrated internal and external network video conferencing. Summary of the Invention

[0003] The purpose of this invention is to provide a multimedia system that integrates internal and external network video conferencing functions, solving the problem that internal and external network video conferencing cannot be broadcast and held simultaneously, and that it is necessary to manually switch the input source of the monitor to display different meeting screens.

[0004] This invention provides a multimedia system integrating internal and external network video conferencing functions, comprising:

[0005] The system includes a first display, a second display, an intranet video conferencing terminal, an extranet video conferencing terminal, and a multimedia transmission system.

[0006] The intranet video conferencing terminal includes an intranet processor, an intranet camera, an intranet microphone, and an intranet speaker;

[0007] The external network video conferencing terminal includes an external network processor, an external network camera, an external network microphone, and external network speakers;

[0008] The multimedia transmission system includes:

[0009] The signal acquisition module is used to acquire the intranet video signal of the intranet video conferencing terminal and the extranet video signal of the extranet video conferencing terminal;

[0010] The signal processing module is used to process the intranet video signal and the extranet video signal, and to set the video signal to be received by the first display and the second display according to the video conference display content of the first display and the second display.

[0011] A signal output module is used to output a corresponding video signal to a first display and a second display according to the settings of the signal processing module, so that the first display and the second display can display video.

[0012] In some embodiments of this application, the intranet camera is used to collect video information of intranet participants and send the video information to the intranet video conferencing terminal;

[0013] The intranet microphone is used to collect the audio information of intranet participants and send the audio information to the intranet video conferencing terminal;

[0014] The intranet processor of the intranet video conferencing terminal processes the video and audio information to generate an intranet video signal.

[0015] In some embodiments of this application, the external network camera is used to collect video information of external network participants and send the video information to the external network video conferencing terminal;

[0016] The external network microphone is used to collect audio information from external network participants and send the audio information to the external network video conferencing terminal;

[0017] The external network processor of the external network video conferencing terminal processes the video and audio information to generate an external network video signal.

[0018] In some embodiments of this application, the signal processing module processes the intranet video signal and the extranet video signal, and sets the video signals to be received by the first and second displays according to the video conference display content of the first and second displays, including:

[0019] Compatibility analysis was performed on the intranet video signal and the extranet video signal respectively, and the target intranet video signal and the target extranet video signal were determined based on the analysis results;

[0020] Determine the video conference display content on the first display and the video conference display content on the second display;

[0021] Based on the video conference display content of the first display and the video conference display content of the second display, the intranet target video signal and the extranet target video signal are encoded to obtain the encoded intranet target video signal and the extranet target video signal;

[0022] Collect the signal interface information of the first display and the signal interface information of the second display;

[0023] Based on the signal interface information of the first display and the signal interface information of the second display, the encoded intranet target video signal and the extranet target video signal are divided for transmission, and the video signals to be received by the first display and the second display are determined.

[0024] In some embodiments of this application, compatibility analysis is performed on the intranet video signal and the extranet video signal respectively, and the target intranet video signal and the target extranet video signal are determined based on the analysis results, including:

[0025] Obtain the intranet signal type of the intranet video signal and the extranet signal type of the extranet video signal, respectively;

[0026] Determine whether the intranet signal type is consistent with the preset compatible signal type. If yes, retain the intranet video signal and set the intranet video signal as the intranet target video signal. If no, convert the intranet video signal according to the preset compatible signal type and set the converted intranet video signal as the intranet target video signal.

[0027] Determine whether the external network signal type is consistent with the preset compatible signal type. If yes, retain the external network video signal and set it as the internal network target video signal. If no, convert the external network video signal according to the preset compatible signal type and set the converted internal network video signal as the internal network target video signal.

[0028] In some embodiments of this application, the intranet target video signal and the extranet target video signal are encoded according to the video conference display content of the first display and the video conference display content of the second display to obtain the encoded intranet target video signal and the extranet target video signal, including:

[0029] The video conferencing content displayed on the first display is the content of the first intranet video conference and the content of the first extranet video conference; the video conferencing content displayed on the second display is the content of the second intranet video conference and the content of the second extranet video conference.

[0030] The target video signal of the intranet is encoded according to the content of the first intranet video conference and the content of the second intranet video conference to obtain the first intranet video encoded signal and the second intranet video encoded signal.

[0031] The target video signal from the external network is encoded based on the content of the first external network video conference and the content of the second external network video conference to obtain the first external network video encoded signal and the second external network video encoded signal.

[0032] In some embodiments of this application, based on the signal interface information of the first display and the signal interface information of the second display, the encoded intranet target video signal and the extranet target video signal are divided for transmission, and the video signals to be received by the first display and the second display are determined, including:

[0033] The signal interface information of the first display includes a first HDMI interface A and a first HDMI interface B, and the signal interface information of the second display includes a second HDMI interface A and a second HDMI interface B.

[0034] The first intranet video encoding signal is determined to be transmitted through the first HDMI interface A, the first extranet video encoding signal is determined to be transmitted through the first HDMI interface B, the second intranet video encoding signal is determined to be transmitted through the second HDMI interface A, and the second extranet video encoding signal is determined to be transmitted through the second HDMI interface B.

[0035] In some embodiments of this application, the signal output module outputs the corresponding video signal to the first display and the second display according to the settings of the signal processing module, including:

[0036] The signal output module transmits the first intranet video encoding signal to the first display through the first HDMI interface A, so that the first display can display the content of the first intranet video conference.

[0037] The signal output module transmits the first external network video encoding signal to the first display through the first HDMI interface B, so that the first display can display the content of the first external network video conference.

[0038] The signal output module transmits the second intranet video encoding signal to the second display through the second HDMI interface A, so that the second display can display the content of the second intranet video conference.

[0039] The signal output module transmits the second external network video encoding signal to the second display through the second HDMI interface B, so that the second display can display the content of the second external network video conference.

[0040] In some embodiments of this application, if the first display is an external network display, the external network video conferencing terminal is disposed within the first display, and the external network video conferencing terminal and the first display are configured as an integrated machine;

[0041] If the second display is an external network display, the external network video conferencing terminal is installed inside the second display, and the external network video conferencing terminal and the second display are configured as an all-in-one machine.

[0042] This invention provides a multimedia system integrating internal and external network video conferencing functions. Compared with existing technologies, its advantages are as follows:

[0043] 1. By analyzing the intranet and extranet video signals to determine the video signals to be received by the first and second displays, the intranet and extranet video conferencing systems are integrated. Camera feeds are shared to both intranet and extranet video conferencing devices. Audio signals from the speakers are also shared to both devices. Finally, the received audio signals from both intranet and extranet video conferencing systems are shared to the sound reinforcement equipment. Integrating two independent video conferencing systems into one significantly reduces project investment, improves equipment utilization, reduces system complexity, and ensures stable and reliable system operation.

[0044] 2. Sharing video signals reduces equipment investment. Currently, high-quality, high-magnification, fast-focusing external network cameras are expensive, bulky, and complex to install. Installing two separate sets of internal and external network video cameras would lead to mutual constraints, bulky size, and disruption of the overall interior design, among other problems. Integrating the two systems into one enables the sharing of meeting footage. This reduces project investment, ensures image standardization, and guarantees a unified interior design style.

[0045] 3. Adopting an integrated video display host reduces system complexity and investment. The external network display uses a conference all-in-one monitor with a built-in external network computer host, which is the external network video conferencing terminal. This all-in-one machine is slim, lightweight, and powerful, capable of stably running external network video conferencing system programs, PPT presentation programs, video playback programs, and other related programs. This invention reduces the need for purchasing, installing, connecting, and configuring a desktop computer, thus reducing the overall system complexity.

[0046] 4. This system enables shared audio input and output, reducing investment and providing ease of use. The audio input utilizes the latest true diversity wireless microphone system, which can be freely placed according to the number and location of speakers. Compared to older equipment, this system offers superior anti-interference capabilities, longer transmission distance, and clearer sound, ensuring the smooth running of meetings. The internal and external network video conferencing system transmits sound to a mixing console for unified amplification processing, eliminating common audio faults such as echo and feedback through sound configuration, thus guaranteeing the normal operation of meetings.

[0047] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of a multimedia system integrating internal and external network video conferencing functions according to the present invention;

[0049] Figure 2 This is a functional block diagram of the multimedia transmission system in an embodiment of the present invention. Detailed Implementation

[0050] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0051] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the ordinary meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof, without excluding other elements or objects. The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "side," and "bottom," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are merely relational terms determined for the convenience of describing the structural relationships of the various components or elements of the present invention, and do not specifically refer to any component or element in the invention, nor should they be construed as limiting the invention. Terms such as "fixed," "connected," and "linked," etc., should be interpreted broadly, indicating that it can be a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For researchers or technicians in the field, the specific meaning of the above terms in this invention can be determined according to the specific circumstances, and they should not be construed as limitations on this invention.

[0053] Example

[0054] This invention provides a multimedia system that integrates internal and external network video conferencing functions, such as... Figure 1 and Figure 2 As shown, it includes:

[0055] The system includes a first display, a second display, an intranet video conferencing terminal, an extranet video conferencing terminal, and a multimedia transmission system.

[0056] The intranet video conferencing terminal includes an intranet processor, an intranet camera, an intranet microphone, and an intranet speaker.

[0057] The external network video conferencing terminal includes an external network processor, an external network camera, an external network microphone, and external network speakers.

[0058] The multimedia transmission system includes:

[0059] The signal acquisition module is used to acquire the intranet video signal of the intranet video conferencing terminal and the extranet video signal of the extranet video conferencing terminal.

[0060] The signal processing module is used to process the intranet video signal and the extranet video signal, and to set the video signal to be received by the first display and the second display according to the video conference display content of the first display and the second display.

[0061] A signal output module is used to output a corresponding video signal to a first display and a second display according to the settings of the signal processing module, so that the first display and the second display can display video.

[0062] By analyzing the intranet and extranet video signals to determine the video signals to be received by the first and second displays, the intranet and extranet video conferencing systems are integrated. Camera feeds are shared to both intranet and extranet video conferencing devices. Audio signals from the speakers are also shared to both devices. Finally, the received audio signals from both intranet and extranet video conferencing systems are shared to the sound reinforcement equipment. Integrating two independent video conferencing systems into one significantly reduces project investment, improves equipment utilization, reduces system complexity, and ensures stable and reliable system operation.

[0063] In some embodiments of this application, the intranet camera is used to collect video information of intranet participants and send the video information to the intranet video conferencing terminal.

[0064] The intranet microphone is used to collect audio information from intranet participants and send the audio information to the intranet video conferencing terminal.

[0065] The intranet processor of the intranet video conferencing terminal processes the video and audio information to generate an intranet video signal.

[0066] In some embodiments of this application, the external network camera is used to collect video information of external network participants and send the video information to the external network video conferencing terminal.

[0067] The external network microphone is used to collect audio information from external network participants and send the audio information to the external network video conferencing terminal.

[0068] The external network processor of the external network video conferencing terminal processes the video and audio information to generate an external network video signal.

[0069] In this embodiment, a true diversity wireless microphone is used. A true diversity wireless microphone is a wireless microphone system employing UHF ultra-high frequency band dual true diversity reception technology, which effectively avoids frequency dropouts and extends the reception distance. The main features of a true diversity wireless microphone include: UHF ultra-high frequency band reception: Using the UHF band provides a wider spectrum, reduces interference with other devices, and ensures signal stability. Dual true diversity reception: By having two independent receiving systems work simultaneously, even if one receiving system is interfered with, the other can still maintain communication, thereby improving system reliability. Multiple channel selection: Provides multiple channel options, allowing users to select the appropriate channel according to environmental conditions to avoid interference and frequency conflicts. Automatic frequency sweep function: Equipped with an automatic SCAN frequency sweep function, it can automatically find the cleanest frequency point in the environment for user convenience. High stability and long-distance use: Designed for stable and long-distance transmission, suitable for use in large venues or outdoors. One-button automatic tracking and locking technology: Enables quick microphone connection, allowing users to start using it immediately. This invention uses true diversity wireless microphones, which can be placed arbitrarily according to the number and location of speakers. Compared with older equipment, this system has advantages such as full anti-interference capability, long transmission distance, and clear sound, ensuring the normal conduct of the meeting.

[0070] In some embodiments of this application, the signal processing module processes the intranet video signal and the extranet video signal, and sets the video signals to be received by the first and second displays according to the video conference display content of the first and second displays, including:

[0071] Compatibility analysis was performed on the intranet video signal and the extranet video signal respectively, and the target intranet video signal and the target extranet video signal were determined based on the analysis results.

[0072] Determine the video conference display content on the first display and the video conference display content on the second display.

[0073] Based on the video conference display content of the first display and the video conference display content of the second display, the intranet target video signal and the extranet target video signal are encoded to obtain the encoded intranet target video signal and the extranet target video signal.

[0074] Collect the signal interface information of the first display and the signal interface information of the second display.

[0075] Based on the signal interface information of the first display and the signal interface information of the second display, the encoded intranet target video signal and the extranet target video signal are divided for transmission, and the video signals to be received by the first display and the second display are determined.

[0076] In some embodiments of this application, compatibility analysis is performed on the intranet video signal and the extranet video signal respectively, and the target intranet video signal and the target extranet video signal are determined based on the analysis results, including:

[0077] The intranet signal type of the intranet video signal and the extranet signal type of the extranet video signal are obtained respectively.

[0078] Determine whether the intranet signal type is consistent with the preset compatible signal type. If yes, retain the intranet video signal and set it as the intranet target video signal. If no, convert the intranet video signal according to the preset compatible signal type and set the converted intranet video signal as the intranet target video signal.

[0079] Determine whether the external network signal type is consistent with the preset compatible signal type. If yes, retain the external network video signal and set it as the internal network target video signal. If no, convert the external network video signal according to the preset compatible signal type and set the converted internal network video signal as the internal network target video signal.

[0080] In this embodiment, video signals are electrical signals used in electronics to carry image information. Based on their properties and processing methods, they can be divided into analog signals and digital signals. Analog signals: Analog signals are continuously changing signals; each frame is a real-time image signal of a natural scene. In daily life, television and movies fall under the category of analog video. The characteristic of analog signals is that each frame of image information is continuously acquired and represented by a continuous electrical signal, but signal attenuation or distortion may occur over time. Digital signals: Digital signals are video information based on digital technology; they undergo digitization processing from the camera's start point. Analog-to-digital converters (A / D) sample, quantize, and encode the analog electrical signals converted by optoelectronic devices, converting them into discrete digital signals. Digital signals can be copied multiple times without distortion and are convenient for long-term storage and non-linear editing. However, due to the large data volume, compression encoding is usually required for storage and transmission.

[0081] Digital and analog signals can be converted to each other. First, the process of converting an analog signal to a digital signal is called analog-to-digital conversion (ADC). This is typically achieved using Pulse Code Modulation (PCM), through three steps: sampling, quantization, and encoding. Sampling: The amplitude of the analog signal is measured at fixed time intervals, resulting in a series of discrete time points. Quantization: The sampled continuous amplitude values ​​are mapped to the nearest digital value, usually in binary representation. The precision of quantization depends on the number of bits used; for example, 8-bit PCM can represent 256 different amplitude levels. Encoding: The quantized values ​​are converted into binary code, which can be processed and stored by digital devices. Second, the process of converting a digital signal to an analog signal is called digital-to-analog conversion (DAC). This is typically achieved by phase-shifting the carrier wave or by mapping a digital sequence to the two dimensions of an analog signal—time and amplitude. In DAC, the order of each element in the digital sequence represents the chronological order in the time dimension, while the size of the element represents the amplitude value in the amplitude dimension. In this invention, the display interface is an HDMI interface. Therefore, it is necessary to convert the signal types of the intranet video signal and the extranet video signal into digital signals.

[0082] In some embodiments of this application, the intranet target video signal and the extranet target video signal are encoded according to the video conference display content of the first display and the video conference display content of the second display to obtain the encoded intranet target video signal and the extranet target video signal, including:

[0083] The video conferencing content displayed on the first display includes the content of the first intranet video conference and the content of the first extranet video conference, while the video conferencing content displayed on the second display includes the content of the second intranet video conference and the content of the second extranet video conference.

[0084] The intranet target video signal is encoded based on the content of the first intranet video conference and the content of the second intranet video conference to obtain the first intranet video encoded signal and the second intranet video encoded signal.

[0085] The target video signal from the external network is encoded based on the content of the first external network video conference and the content of the second external network video conference to obtain the first external network video encoded signal and the second external network video encoded signal.

[0086] In some embodiments of this application, based on the signal interface information of the first display and the signal interface information of the second display, the encoded intranet target video signal and the extranet target video signal are divided for transmission, and the video signals to be received by the first display and the second display are determined, including:

[0087] The signal interface information of the first display includes a first HDMI interface A and a first HDMI interface B, and the signal interface information of the second display includes a second HDMI interface A and a second HDMI interface B.

[0088] The first intranet video encoding signal is determined to be transmitted through the first HDMI interface A, the first extranet video encoding signal is determined to be transmitted through the first HDMI interface B, the second intranet video encoding signal is determined to be transmitted through the second HDMI interface A, and the second extranet video encoding signal is determined to be transmitted through the second HDMI interface B.

[0089] In some embodiments of this application, the signal output module outputs the corresponding video signal to the first display and the second display according to the settings of the signal processing module, including:

[0090] The signal output module transmits the first intranet video encoding signal to the first display through the first HDMI interface A, so that the first display can display the content of the first intranet video conference.

[0091] The signal output module transmits the first external network video encoding signal to the first display through the first HDMI interface B, so that the first display can display the content of the first external network video conference.

[0092] The signal output module transmits the second intranet video encoding signal to the second display through the second HDMI interface A, so that the second display can display the content of the second intranet video conference.

[0093] The signal output module transmits the second external network video encoding signal to the second display through the second HDMI interface B, so that the second display can display the content of the second external network video conference.

[0094] In some embodiments of this application, if the first display is an external network display, the external network video conferencing terminal is located inside the first display, and the external network video conferencing terminal and the first display are configured as an integrated machine.

[0095] If the second display is an external network display, the external network video conferencing terminal is installed inside the second display, and the external network video conferencing terminal and the second display are configured as an all-in-one machine.

[0096] In this embodiment, the external network display and external network video conferencing terminal are configured as an all-in-one machine, which can effectively reduce system complexity and investment. The all-in-one machine is lightweight and powerful, capable of stably running external network video conferencing system programs, PPT presentation programs, video playback programs, and other related programs. This reduces the need for purchasing, installing, connecting, and configuring a desktop computer, thus reducing the overall system complexity.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

[0098] The system provided in the above embodiments is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be further decomposed or combined. For example, the modules in the above embodiments can be merged into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the various modules or steps and are not considered as an improper limitation of the present invention.

[0099] Those skilled in the art will recognize that the modules and method steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. The programs corresponding to the software modules and method steps can be placed in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art. To clearly illustrate the interchangeability of electronic hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the invention.

Claims

1. A multimedia system integrating internal and external network video conferencing functions, characterized in that, include: The system includes a first display, a second display, an intranet video conferencing terminal, an extranet video conferencing terminal, and a multimedia transmission system. The intranet video conferencing terminal includes an intranet processor, an intranet camera, an intranet microphone, and an intranet speaker; The external network video conferencing terminal includes an external network processor, an external network camera, an external network microphone, and external network speakers; The multimedia transmission system includes: The signal acquisition module is used to acquire the intranet video signal of the intranet video conferencing terminal and the extranet video signal of the extranet video conferencing terminal; The signal processing module is used to process the intranet video signal and the extranet video signal, and to set the video signal to be received by the first display and the second display according to the video conference display content of the first display and the second display. A signal output module is used to output a corresponding video signal to a first display and a second display according to the settings of the signal processing module, so that the first display and the second display can display the video conference. The signal processing module processes the intranet video signal and the extranet video signal, and sets the video signals to be received by the first and second displays according to the video conference display content of the first and second displays, including: Compatibility analysis was performed on the intranet video signal and the extranet video signal respectively, and the target intranet video signal and the target extranet video signal were determined based on the analysis results; Determine the video conference display content on the first display and the video conference display content on the second display; Based on the video conference display content of the first display and the video conference display content of the second display, the intranet target video signal and the extranet target video signal are encoded to obtain the encoded intranet target video signal and the extranet target video signal; Collect the signal interface information of the first display and the signal interface information of the second display; Based on the signal interface information of the first display and the signal interface information of the second display, the encoded intranet target video signal and the extranet target video signal are divided for transmission, and the video signals to be received by the first display and the second display are determined. Based on the video conference display content of the first display and the video conference display content of the second display, the intranet target video signal and the extranet target video signal are encoded to obtain the encoded intranet target video signal and extranet target video signal, including: The video conferencing content displayed on the first display is the content of the first intranet video conference and the content of the first extranet video conference; the video conferencing content displayed on the second display is the content of the second intranet video conference and the content of the second extranet video conference. The target video signal of the intranet is encoded according to the content of the first intranet video conference and the content of the second intranet video conference to obtain the first intranet video encoded signal and the second intranet video encoded signal. The target video signal from the external network is encoded based on the content of the first external network video conference and the content of the second external network video conference to obtain the first external network video encoded signal and the second external network video encoded signal.

2. The multimedia system integrating internal and external network video conferencing functions according to claim 1, characterized in that, The intranet camera is used to collect video information of intranet participants and send the video information to the intranet video conferencing terminal; The intranet microphone is used to collect the audio information of intranet participants and send the audio information to the intranet video conferencing terminal; The intranet processor of the intranet video conferencing terminal processes the video and audio information to generate an intranet video signal.

3. A multimedia system integrating internal and external network video conferencing functions according to claim 1, characterized in that, The external network camera is used to collect video information from external network participants and send the video information to the external network video conferencing terminal; The external network microphone is used to collect audio information from external network participants and send the audio information to the external network video conferencing terminal; The external network processor of the external network video conferencing terminal processes the video and audio information to generate an external network video signal.

4. A multimedia system integrating internal and external network video conferencing functions according to claim 1, characterized in that, Compatibility analysis is performed on the intranet video signal and the extranet video signal respectively, and the target intranet video signal and the target extranet video signal are determined based on the analysis results, including: Obtain the intranet signal type of the intranet video signal and the extranet signal type of the extranet video signal, respectively; Determine whether the intranet signal type is consistent with the preset compatible signal type. If yes, retain the intranet video signal and set the intranet video signal as the intranet target video signal. If no, convert the intranet video signal according to the preset compatible signal type and set the converted intranet video signal as the intranet target video signal. Determine whether the external network signal type is consistent with the preset compatible signal type. If yes, retain the external network video signal and set it as the internal network target video signal. If no, convert the external network video signal according to the preset compatible signal type and set the converted internal network video signal as the internal network target video signal.

5. A multimedia system integrating internal and external network video conferencing functions according to claim 1, characterized in that, Based on the signal interface information of the first display and the signal interface information of the second display, the encoded intranet target video signal and the extranet target video signal are divided for transmission, and the video signals to be received by the first display and the second display are determined, including: The signal interface information of the first display includes a first HDMI interface A and a first HDMI interface B, and the signal interface information of the second display includes a second HDMI interface A and a second HDMI interface B; The first intranet video encoding signal is determined to be transmitted through the first HDMI interface A, the first extranet video encoding signal is determined to be transmitted through the first HDMI interface B, the second intranet video encoding signal is determined to be transmitted through the second HDMI interface A, and the second extranet video encoding signal is determined to be transmitted through the second HDMI interface B.

6. A multimedia system integrating internal and external network video conferencing functions according to claim 5, characterized in that, The signal output module outputs the corresponding video signal to the first display and the second display according to the settings of the signal processing module, including: The signal output module transmits the first intranet video encoding signal to the first display through the first HDMI interface A, so that the first display can display the content of the first intranet video conference. The signal output module transmits the first external network video encoding signal to the first display through the first HDMI interface B, so that the first display can display the content of the first external network video conference. The signal output module transmits the second intranet video encoding signal to the second display through the second HDMI interface A, so that the second display can display the content of the second intranet video conference. The signal output module transmits the second external network video encoding signal to the second display through the second HDMI interface B, so that the second display can display the content of the second external network video conference.

7. A multimedia system integrating internal and external network video conferencing functions according to claim 1, characterized in that, If the first display is an external network display, the external network video conferencing terminal is set inside the first display, and the external network video conferencing terminal and the first display are set as an integrated machine; If the second display is an external network display, the external network video conferencing terminal is installed inside the second display, and the external network video conferencing terminal and the second display are configured as an all-in-one machine.

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