KR20090020748A - System and method for offering video conferencing service under the hybrid conferencing architectur - Google Patents

Abstract

The present invention relates to a system and a method for providing a video conferencing service for a video call. More particularly, the present invention relates to a voice signal of a plurality of video terminals different from each other in terms of processing capability, screen size, and the like of an audio signal or a video signal. Alternatively, by encoding, decoding, and resizing the audio signal or the video signal for the video call in consideration of the video signal processing capability and the screen size, a seamless video call is possible between a plurality of video terminals and the audio signal and the video signal. The present invention relates to a hybrid video conferencing service providing system and a method of providing the same, which enables efficient distribution of a processing system of the video system and thus enables flexible system expansion of the video conferencing service.

Such a hybrid video conferencing service providing system according to the present invention receives a video conferencing service request message from a plurality of video terminals, analyzes the video signal processing capabilities of the plurality of video terminals, and provides a video conferencing service for video signals for each video terminal. A video conferencing service management / control system for classifying the types into either relay service or mix service; A high speed communication module control / management system for setting a video signal processing system for each of a plurality of video terminals according to the service classification received from the video conferencing service management / control system; An RTP processing system transmitting and receiving a plurality of video terminals and video signals to each other, and performing a video call between video terminals corresponding to a relay service among the plurality of video terminals; A video signal preprocessing system which decodes a video signal of a video terminal corresponding to a mix service among the plurality of video terminals by a corresponding video codec and adjusts a video screen size; And a video signal post-processing system that combines the pre-processed video screens in the video signal pre-processing system, encodes the video screens into corresponding video codecs, and transmits them to the plurality of video terminals through the RTP processing system.

Description

System and method for offering video conferencing service under the hybrid conferencing architectur}

The present invention relates to a system and a method for providing a video conferencing service for a video call. More particularly, the present invention relates to a voice signal of a plurality of video terminals different from each other in terms of processing capability, screen size, and the like of an audio signal or a video signal. Alternatively, by encoding, decoding, and resizing the audio signal or the video signal for the video call in consideration of the video signal processing capability and the screen size, a seamless video call is made possible between the plurality of video terminals and the audio signal or the video signal. The present invention relates to a hybrid video conferencing service providing system and a method of providing the same, which enables efficient distribution of a processing system of the video system and thus enables flexible system expansion of the video conferencing service.

In general, a video call is an advanced type of call that allows a user to make a call while additionally looking at the other party's face.

A conventional video conferencing service providing system for processing audio signals and video signals of a plurality of video terminals for the video call as described above will be described with reference to FIG. 1.

The conventional video conferencing service providing system includes a video terminal 11 for transmitting and receiving encoded video data for a video call through a router / switch 12 and an upper router / switch 13 (MCU) ( 14) and the video conferencing service management system 15 to perform the video conferencing service.

At this time, the multipoint controller 14 performs operations such as codec setting, channel configuration and management, media mixing, etc. between the video terminal 11 and the multipoint controller 14 for the video conferencing service.

Since the conventional video conferencing service system does not transmit an optimized audio signal or video signal for each of a plurality of video terminals having various processing capacities, a specific video terminal may transmit or receive an audio signal or a video signal exceeding the processing capability. There is a problem that voice or video disconnection occurs during a call.

In addition, the number of simultaneous users of the video conferencing service is limited by the service capability of the multi-point control unit (MCU) 14, so that the system and service scalability are not excellent, and the audio signal or video signal transmission / reception apparatus (RTP processing system) As the audio signal or video signal processing processor generally operates as a system, the audio signal and video signal processing processor may fail to recover due to an interruption of an ongoing video conferencing service.

The present invention has been proposed to solve the above problems of the prior art,

Summary of the Invention An object of the present invention is a hybrid video conferencing service that provides an optimized video call to each video terminal by directly transmitting and receiving, encoding, decoding, or resizing the video signal according to the processing capability of the video terminal. It is to provide a providing system and a method of providing the same.

Another object of the present invention is to perform a resource processing by retransmitting the audio signal or the video signal of the video terminal to a processor such as encoding, decoding, etc., in real time even if the processor such as encoding and decoding becomes inoperable. By preventing the inoperability of the resource processing system to implement a seamless video call.

It is still another object of the present invention to enable efficient operation of the processing system and to flexibly expand the system by classifying and separately distributing the audio signal and the video signal processing system for each video terminal by function.

The hybrid video conferencing service providing system according to the present invention for achieving the above object receives a video conferencing service request message from a plurality of video terminals, and analyzes the video signal processing capability of the plurality of video terminals to the video signal for each video terminal. A video conferencing service management / control system for classifying a video conferencing service type into one of a relay service and a mix service; A high speed communication module control / management system for setting a video signal processing system for each of a plurality of video terminals according to the service classification received from the video conferencing service management / control system; An RTP processing system transmitting and receiving a plurality of video terminals and video signals to each other, and performing a video call between video terminals corresponding to a relay service among the plurality of video terminals; A video signal preprocessing system for controlling a video screen size after decoding a video signal of a video terminal corresponding to a mix service among the plurality of video terminals with a corresponding video codec; And a video signal post-processing system that combines the pre-processed video screens in the video signal pre-processing system, encodes the video screens into corresponding video codecs, and transmits them to the plurality of video terminals through the RTP processing system.

On the other hand, the hybrid video conferencing service providing method of the present invention comprises the steps of: a) receiving a video conferencing service request message from a plurality of video terminals using a video conferencing service management / control system; b) analyzing video signal processing capabilities of a plurality of video terminals by using the video conferencing service management / control system, and classifying a video conferencing service type of each video signal into one of a relay service and a mix service; c) setting a video signal processing system of a plurality of video terminals according to the service classification received from the video conferencing service management / control system using a high speed communication module control / management system; d) transmitting and receiving a plurality of video terminals and video signals to each other, and performing a video call between video terminals of the plurality of video terminals corresponding to a relay service; e) adjusting a video screen size after decoding a video signal of a video terminal of a plurality of video terminals corresponding to a mix service using a video signal preprocessing system with a corresponding video codec; And e ') combining the pre-processed video screens in the video signal preprocessing system using the video signal post-processing system, encoding them into corresponding video codecs, and transmitting them to the plurality of video terminals through the RTP processing system. do.

According to the present invention by the above problem solving means,

The present invention analyzes the audio signal and video signal processing capability of a plurality of video terminals and performs resource processing of the audio signal and video signal for each video terminal.

Therefore, it is possible to exert an effect of facilitating a video call between a plurality of video terminals having various processing capabilities.

In addition, the present invention by using the high-speed communication module control / management system to manage the operating state of each processing system in real time to select a processing system (available) when a part of each processing system (Fail) The audio signal or the video signal of the video terminal is retransmitted to the processing system.

Therefore, even in the event of a failure of the audio signal or video signal processing system (Fail) it can exhibit the effect that can guarantee the normal service continuity.

The present invention also provides a real-time transport protocol (RTP) copier process for processing audio signals or video signals of a plurality of video terminals, audio signal preprocessing system, audio signal postprocessing system, video signal preprocessing system, after video signal The processing system is independent and distributed.

Therefore, by distributing audio signal or video signal for each video terminal, it distributes the video signal processing load and makes efficient use of processing power. Therefore, it is possible to add service and increase subscriber through efficient use of processing system for video conferencing. According to the present invention, it is possible to efficiently perform the system expansion of services.

Hereinafter, with reference to the accompanying drawings will be described specific details for the practice of the invention.

2 is a conceptual diagram of a hybrid video conferencing service providing system 100 according to the present invention, and FIG. 3 is a conceptual diagram illustrating a relationship between components of a hybrid video conferencing service providing system.

2 and 3, the hybrid video conferencing service providing system 100 according to the present invention basically includes a video conferencing service management / control system 10, a video terminal profile management system 12, and an RTP processing system. 20, the audio signal preprocessing system 30, the audio signal postprocessing system 40, the video signal preprocessing system 50, the video signal postprocessing system 60 and the high speed communication module control / management system 70, etc. Include.

First, the video terminal 1 according to the present invention includes a wired / wireless communication module connected to the video conferencing service management / control system 10 and a wired / wireless communication network to communicate voice signals and video signals.

In addition, the video terminal 1 transmits a display means (not shown) such as an LCD (not shown), a key input means (not shown) for generating a user operation signal, and a user's voice to conduct a video call with another video terminal. A microphone (not shown) for converting an audio signal, and photographing means (not shown) such as a camera for capturing a user's appearance and converting the voice signal into an electric video signal.

In the video terminal profile management system 12, profile information such as display screen sizes, CPU operation speeds, memory information, codec information, etc. of the plurality of video terminals 1 is constructed. When (1) is used for the first time, the user accesses the profile management system of the video terminal and registers the model name of the video terminal 1 so that the profile management system 12 based on the model name of the video terminal 1 registered by the user. It is possible to build the profile information of the video terminal 1 in a separate video terminal list database.

On the other hand, when the video conferencing service management / control system 10 receives the video conferencing service request message from the plurality of video terminals 1, the video terminal profile management system 12 receives the service request message from the plurality of video terminals ( The inquiry of the profile of 1) is requested and the profiles of the plurality of video terminals 1 are received from the video terminal profile management system 12.

Accordingly, the video conferencing service management / control system 10 analyzes the audio signal and the video signal processing capability of each video terminal 1 based on the received profiles of the plurality of video terminals 1, for each video terminal 1. The audio signal and the video signal processing method are determined, and the high speed communication module management / control system 70 to be described later requests a service processing system setting for processing of the video terminal 1.

For example, if the audio signal or the video signal processing capability of the video terminal 1 is suitable for making a video call, the relay service is provided, and the audio signal or video signal processing capability of the video terminal is used to make the video call. If not, it is classified as a mix service.

Here, the relay service means that the service can be directly performed without processing the audio signal or the video signal, and the mix service means that the service can be performed only by processing the audio signal or the video signal with a voice or video signal post-processing system which will be described later.

The classification criteria of the video signal processing capability of the video terminal 1 is, for example, when the operation clock of the central processing unit (CPU) of the video terminal 1 is 500 MHz or less, the video signal processing service of the video terminal 1 is performed. The video signal processing service of the video terminal 1 may be classified as a relay service when the operation clock of the CPU of the video terminal is 500 MHz or more.

The service classification for the video signal processing of the video terminal 1 is not necessarily limited to the CPU operating speed, but is comprehensively determined through hardware specifications of the video terminal such as memory speed.

The classification criterion of the processing capability of the video terminal 1 is, for example, the audio signal to be transmitted to the video terminal 1 for the video call using the codec information of the video terminal 1 of the video terminal 1. If it is impossible to play the audio signal by the codec of the video terminal 1, it is classified as a mix service, and if it is possible to play it, it is classified as a relay service and transmitted to the RTP copy process described later.

Meanwhile, the RTP processing system 20 largely includes an RTP splitter & distributor channel 22, an RTP copier process 24, a high speed communication module 26, and the like.

The RTP segmentation and distribution channel 22 is generated according to the setting of the high speed communication module management / control system 70 to be described later, and serves as a passage for transmitting and receiving real time audio signals or video signals with the plurality of video terminals 1. .

That is, the RTP segmentation and distribution channel 22 is an RTP copying process 24 when a video call or a video signal of the video terminal 1 is classified as a relay service and the video call is performed by the RTP copying process 24 described later. And a signal transmission / reception path between the plurality of video terminals 1.

When the video signal or the audio signal of the video terminal 1 is classified as a mix service, the RTP segmentation and distribution channel 22 transmits and receives signals between the video signal pre-processing system and the plurality of video terminals 1 to be described later. It acts as a pathway.

As a result, the RTP segmentation and distribution channel 22 serves as a transmission / reception channel between the video terminal 1 and the RTP copying process 24 and a transmission / reception channel between the video terminal 1 and the post-processing system of the audio signal or the video signal. Do it together.

Here, the RTP splitting and distributing channel 22 will be described in more detail. The splitting channel of the RTP splitting and distributing channel 22 receives and uppacketizes an audio signal or a video signal of the video terminals 1. A module for transmitting to the processing system (RTP copy process 24, audio signal and video signal pre-processing system), and the distribution channel of the RTP segmentation and distribution channel 22 is the processing system (RTP copy process 24, This module receives audio signals or video signals of audio signals or video signal pre- and post-processing systems, packetizes them, and transmits them to the corresponding video terminals 1.

In this case, the packetizing process cuts an audio signal or a video signal to fit an RTP payload, and then puts one RTP packet into the payload, a source RTP port, and a destination RTP port. It is a process of creating a single audio signal and a video signal packet by attaching an RTP header including an RTP port.

After the packetizing (uppacketizing) receives the audio signal or video signal packet, the RTP header collects the source RTP port and the destination RTP port, and the payload collects the audio signal or the video signal and then collects the same source RTP port ( It transmits a signal by transmitting a voice signal or a video signal having a source RTP port and a destination RTP port.

The RTP copying process 24 is generated when two video terminals of the plurality of video terminals 1 are a relay service so that the two video terminals do not go through a voice signal or a video signal pre and post processing system. In addition, the video call service is directly connected to each other.

The high speed communication module 26 transmits and receives a voice signal or a video signal with the video terminal 1 in real time, and is controlled in response to the control of the high speed communication module management / control system 70 to be described later. .

The high speed communication module management / control system 70 analyzes the request content of the service processing system setting for each video terminal 1 received from the video conferencing service management / control system 10 and analyzes the contents of the voices of the plurality of video terminals 1. When the signal or the video signal is a relay service, the RTP copy process 24 is set to inform the video conferencing service management / control system of the set information.

On the other hand, if the audio signal or the video signal of the plurality of video terminal 1 is a mix service, the respective audio signal or video signal before and after processing process to process the audio signal or video signal of the plurality of video terminal 1 is set. This informs the video conferencing service management / control system 10 of the set information.

In this case, the video conferencing service management / control system 10 transmits the information set in the high speed communication module management / control system 70 to the plurality of video terminals 1 so that the user can use his or her own video call. It is possible to recognize the RTP copying process 24 for transmitting and receiving a signal or video signal or a preprocessing process for an audio signal or a video signal.

The voice signal preprocessing system 30 largely includes a voice signal decoder process 32 and a high speed communication module 34.

The audio signal decoder process 32 serves to decode a voice signal received from the plurality of video terminals 1 through the high speed communication module 34.

The high speed communication module 34 is a high speed communication module 46 of the voice signal post-processing system 40 which will be described later by the control of the high speed communication module management / control system 70 to decode the voice signals decoded in the voice signal decoder process. It serves to send to.

The voice signal post-processing system 40 largely includes a voice signal mixer process 42, a voice signal encoder process 44, a high speed communication module 46, and the like.

The speech signal mixer process 42 serves to mix the speech signals decoded by the speech signal preprocessing system 30.

The voice signal encoder process 44 serves to receive and encode the mixed voice signal received from the voice signal mixer process 42.

The high speed communication module 46 divides the voice signal encoded by the voice signal encoder process 44 in real time under the control of the high speed communication module management / control system 70 and divides and distributes the RTP channel 22 with the video terminal 1. Send and receive through).

The video signal preprocessing system 50 largely includes a video signal decoder process 52, an image size adjuster process 54, a high speed communication module 56, and the like.

The video signal decoder process 52 serves to decode video signals received from the plurality of video terminals 1, respectively.

The image size adjuster process 54 serves to adjust the image size of each of the decoded image signals received from the image signal decoder process 52.

The high speed communication module 56 is an image signal post-processing system using the high speed communication module under the control of the high speed communication module management / control system 70 to control the image signal whose image size is adjusted in the image size control process 54. 60 and transmits and receives in real time.

The video signal post-processing system 60 includes a video screen maker process, a video signal adjuster process 64, a video signal encoder process 65, a high speed communication module 66, and the like.

The video screen maker process 62 combines the video signals of the video size control received from the video signal preprocessing system 50 into a set video screen layout.

The video signal adjuster process 64 serves to adjust encoded video signals received from the video screen maker process to an appropriate video size that meets the specifications of the plurality of video terminals 1.

The video signal encoder process 65 serves to encode video signals received from each video signal adjuster process video screen maker process.

The high speed communication module 66 divides and distributes the RTP with the video terminal 1 in real time under the control of the high speed communication module management / control system 70 in a video signal whose image size is adjusted in the video signal encoder process. It transmits and receives a video signal through the channel 22.

4 is a timing diagram illustrating an embodiment of a method of providing a video conferencing service according to the present invention, and FIG. 5 is a flowchart illustrating a process of providing a conferencing service in a video conferencing service management / control system according to the present invention.

As shown in FIGS. 4 and 5, first, the video conferencing service management / control system 10 performs a participant list from the first video terminal 1a (the second video terminal 1b and the third video terminal 1c). In step S10, a video conferencing service request message is received.

Subsequently, the video conferencing service management / control system 10 responds to the video conferencing service request message to the first video terminal 1a, the second video terminal 1b, and the third video terminal 1c, and mutually sounds. Be prepared to make calls and video calls.

Subsequently, the video conferencing service management / control system 10 receives the first video terminal 1a, the second video terminal 1b, and the third video terminal 1c from the video terminal profile management system 12 to participate in the video conferencing service. Receive the profile for (S20), and analyzes the audio signal and video signal processing capability of the first video terminal (1a), the second video terminal (1b) and the third video terminal (1c) (S30), each image Type of video call service to be provided for each terminal 1 (for example, the video signal and the audio signal of the first video terminal 1 and the second video terminal 1 are both relay type and the third video terminal 1). The video signal is a relay type and the audio signal is mixed (S40).

Subsequently, the video conferencing service management / control system 10 transmits the determined service type for each video terminal 1 to the high speed communication module management / control system 70, and transmits the image to the high speed communication module management / control system 70. A request for resource setting for a video conferencing service for each terminal 1, that is, an RTP processing system and a process setting for processing an audio signal or a video signal (S50), and a response thereto is received to receive the first video terminal 1a and the second. Transfers the processing system and process information set for each terminal to the video terminal 1b and the third video terminal 1c.

Accordingly, the high speed communication module management / control system 70 receives the resource setting request contents for the received video conferencing service (video signals and audio signals of the first video terminal 1a and the second video terminal 1b are relay type, The video signal of the third video terminal 1c receives the relay type and the audio signal mixing type (S60), thereby determining whether there is available resource (S70).

If any one of the necessary resources is not available in step S70, the video conferencing service management / control system 10 responds to the resource setting operation failure including the cause (S72).

If all necessary resources are available, the RTP processing system 20 generates RTP segmentation and distribution channels 22 for transmitting and receiving real-time audio signals or video signals with the video terminals 1 and, if necessary (for example, When there is a video terminal using a relay method such as the first video terminal 1a and the second video terminal 1b, the RTP copying process 24 is generated through the high speed communication module 26. ).

Here, if there is a video terminal using a mixing method among the plurality of video terminals, the high speed communication module management / control system 70 may include a voice signal decoder process 32 and a mixer process ( 42, the audio signal encoder 44, the video signal decoder process 52, the video size adjuster process 54, the video screen maker process 62, and the video signal encoder process 65 for each high speed communication module. Manages the response information requested and received through the terminal and responds to the video conferencing service management / control system 10 including the configuration information (S74), and controls the transmission and reception of signals between the high speed communication modules to control the second, The call setup is performed by exchanging a message with the 3 video terminal (S80).

That is, the high speed communication module management / control system 70 processes the high speed communication modules of the RTP processing system 20, the audio signal before and after processing systems 30 and 40, and the video signal before and after processing systems 50 and 60 through message passing. The control signal and the data (including audio signal or video signal) are transmitted and received to proceed with call setup between video terminals, and maintain and manage a video conferencing service session (S90).

Subsequently, the high-speed communication module management / control system 70 according to the present invention will be described a procedure for guaranteeing service continuity when a voice signal and a video signal pre-processing system or a process failure occurs.

As shown in FIG. 6, the high speed communication module management / control system 70 collects and manages an operation state of each system and processes from a generation point to an end point. If the video signal post-processing system 60 for the third video terminal 1c of the plurality of video terminals 1 fails, the high speed communication module management / control system 70 performs the video signal in real time. Detects that the post-processing process has failed and selects one of the available video signal post-processing systems, creates a failed video signal post-processing process in the selected system, and the corresponding messages Reconfigure and manage message passing paths and information types to be processed.

1 is a conceptual diagram illustrating a configuration of a conventional video conferencing service providing system.

2 is a conceptual diagram illustrating a configuration of a hybrid video conferencing service providing system according to the present invention.

3 is a diagram illustrating a relationship in which components are used in a video conferencing service according to the present invention;

4 is a timing diagram illustrating a video conferencing service provision procedure according to the present invention.

5 is a flowchart illustrating a process of providing a conferencing service in a video conferencing service management / control system according to the present invention.

FIG. 6 is a flowchart illustrating a seamless service progress process when a voice signal and a video signal processing system fail according to the present invention. FIG.

-Description of the main symbols in the drawing-

1: Video terminal

1a: first video terminal 1b: second video terminal

1c: third video terminal

10: Video Conferencing Management / Control System

12: Video terminal profile management system

20: RTP processing system 22: RTP splitting and distribution channel

24: RTP copy process 26: High speed communication module

30: Voice signal preprocessing system

32: voice signal decoder process 34: high speed communication module

40: voice signal post-processing system

42: mixer process 44: voice signal encoder

46: high speed communication module

50: video signal preprocessing system

52: video signal decoder process 54: video size adjuster process

56: high speed communication module

60: video signal post-processing system

62: video screen maker process 64: video signal controller process

65: encoder process 66: high speed communication module

70: high speed communication module management / control system

100: hybrid video conferencing service providing system

Claims (16)

Receives a video conferencing service request message from a plurality of video terminals, analyzes the video signal processing capability of the plurality of video terminals, and classifies a video conferencing service type for a video signal for each video terminal into either a relay service or a mix service. Video conferencing service management / control system; A high speed communication module control / management system for setting a video signal processing system for each of a plurality of video terminals according to the service classification received from the video conferencing service management / control system; An RTP processing system transmitting and receiving a plurality of video terminals and video signals to each other, and performing a video call between video terminals corresponding to a relay service among the plurality of video terminals; A video signal preprocessing system for controlling a video screen size after decoding a video signal of a video terminal corresponding to a mix service among the plurality of video terminals with a corresponding video codec; And A hybrid video conferencing service providing system comprising a video signal post-processing system for combining the pre-processed video screens in the video signal preprocessing system and encoding the video screens and encoding the video codecs to a plurality of video terminals through the RTP processing system. . The method of claim 1, The video conferencing service management / control system receives a video conferencing service request message from a plurality of video terminals, analyzes audio signal processing capabilities of the plurality of video terminals, and relays a video conferencing service type for a video signal of each video terminal. Or each of the mix services, The high speed communication module control / management system sets up a system for processing audio signals for a plurality of video terminals according to the service classification received from the video conferencing service management / control system. The RTP processing system transmits and receives a plurality of video terminals and audio signals, and performs a video call between video terminals corresponding to a relay service among the plurality of video terminals, An audio signal preprocessing system that receives an audio signal of a video terminal corresponding to a mix service from a plurality of video terminals and decodes it into a corresponding voice codec; And A hybrid video conferencing service, further comprising an audio signal post-processing system for encoding the audio signal decoded by the audio signal preprocessing system into a corresponding voice codec and transmitting the encoded audio signal to a plurality of video terminals through the RTP processing system. Provide system. The method according to claim 1 or 2, And a profile management system for delivering information on the audio signal or the video signal processing capability of the video terminal at the request of the video conferencing service management / control system. The method according to claim 1 or 2, The RTP processing system A plurality of RTP splitter & distributor channels serving as a transmission / reception path of an audio signal and a video signal between the plurality of video terminals and each processing system; A real-time transport protocol (RTP) copier process for performing a video call between video terminals corresponding to a relay service; And And a high speed communication module for transmitting and receiving the voice signal and the video signal to and from the outside in real time. The method of claim 2, The voice signal preprocessing system One or more speech signal decoder processes for decoding the speech signal; And And a high speed communication module for transmitting the voice signal received from the video terminal to a voice signal decoder process and transmitting the voice signal decoded by the voice signal decoder process to the outside. The method according to claim 2 or 5, The voice signal post-processing system One or more voice signal mixer processes for mixing the decoded voice signals; At least one voice signal encoder unit for receiving and encoding the mixed voice signal received from the voice signal mixer process; And And a high speed communication module for transmitting the decoded voice signal received from the high speed communication module of the voice signal preprocessing system to a mixer process, and transmitting the voice signal encoded by the voice signal encoder to the corresponding video terminal. Hybrid video conferencing service providing system. The method of claim 1, The video signal preprocessing system One or more video signal decoder processes for decoding the video signals, respectively; At least one image size adjuster process for adjusting an image size of each of the decoded image signals received from the image signal decoder process; And And a high speed communication module for transmitting the video signal received from the video terminal to the video signal decoder process, and transmitting the video signal decoded in the video signal decoder process and the image size adjuster process to the video terminal again. Hybrid video conferencing service providing system, characterized in that. The method according to claim 1 or 7, The video signal post-processing system A plurality of video screen maker processes for combining the decoded and adjusted video signals into a set video screen layout; A video signal adjuster process of adjusting the video signals received from each video screen maker process to an appropriate video size according to the specifications of the video terminal; A plurality of video signal encoder processes for encoding video signals received from the video signal adjuster process; And The decoded image size control image signal received from the high speed communication module of the image signal preprocessing system is transmitted to the image screen maker process, and the image signal encoded by the image signal encoder process is returned to the corresponding image. Hybrid video conferencing service providing system comprising a high speed communication module for transmitting to the terminal. The method according to claim 1 or 2, The high speed communication module control / management system By controlling the high-speed communication module of each processing system to control data transmission and reception between each other, and managing the operating state of each processing system in real time, the serviceable processing when a part of each processing system is failed. A system for providing a hybrid video conferencing service, wherein the system is selected to retransmit an audio signal or a video signal of a video terminal to the processing system. a) receiving a video conferencing service request message from a plurality of video terminals using a video conferencing service management / control system; b) analyzing video signal processing capabilities of a plurality of video terminals by using the video conferencing service management / control system, and classifying a video conferencing service type of each video signal into one of a relay service and a mix service; c) setting a video signal processing system of a plurality of video terminals according to the service classification received from the video conferencing service management / control system using a high speed communication module control / management system; d) transmitting and receiving a plurality of video terminals and video signals to each other, and performing a video call between video terminals of the plurality of video terminals corresponding to a relay service; e) using a video signal preprocessing system to decode video signals of video terminals corresponding to a mix service among video terminals with a corresponding video codec, and then adjusting the size of the video screen; And e ') combining the pre-processed video screens in the video signal preprocessing system using the video signal post-processing system, encoding them into corresponding video codecs, and transmitting them to the plurality of video terminals through the RTP processing system. Hybrid video conferencing service provision method. The method of claim 10, b ') analyzing voice signal processing capabilities of a plurality of video terminals by using the video conferencing service management / control system to classify the video conferencing service type for each audio signal of the video terminal into one of a relay service and a mix service; c ') setting a system for processing audio signals for a plurality of video terminals according to the service classification received from the video conferencing service management / control system using a high speed communication module control / management system; d ') transmitting and receiving a plurality of video terminals and audio signals to each other, and performing a video call between video terminals corresponding to a relay service of a plurality of video terminals; f) receiving a voice signal of a video terminal corresponding to a mix service among a plurality of video terminals using a voice signal preprocessing system and decoding the same into a corresponding voice codec; And f ') using the audio signal post-processing system, encoding the audio signals decoded by the audio signal pre-processing system into a corresponding voice codec and transmitting the encoded audio signals to a plurality of video terminals through the RTP processing system. Hybrid video conferencing service providing method. The method according to claim 10 or 11, wherein The high speed communication module control / management system is used to control the high speed communication module of each processing system to control data transmission and reception between each other, and the operation state of each processing system is managed in real time so that a part of each processing system fails. And selecting a serviceable processing system to retransmit the audio signal or the video signal of the video terminal to the processing system if the processing system is available. The method of claim 11, Step f) 1) transmitting a voice signal received from a video terminal to a voice signal decoder process using a high speed communication module; 2) decoding the speech signal using the speech signal decoder process; And And 3) transmitting the voice signal decoded by the voice signal decoder process to the voice signal post-processing system using a high speed communication module. The method according to claim 11 or 13, Step f ') 1) transmitting the decoded voice signal received from the high speed communication module of the voice signal preprocessing system to the mixer process using the high speed communication module; 2) mixing decoded speech signals using a speech signal mixer process; 3) receiving and encoding the mixed speech signal received from the speech signal mixer process using a speech signal encoder process; And 4) A method of providing a hybrid video conferencing service, comprising: transmitting a voice signal encoded by the voice signal encoder process to a corresponding video terminal by using a high speed communication module. The method of claim 10, Step e) 1) transmitting a video signal received from a video terminal to a video signal decoder process using a high speed communication module; 2) decoding each of the video signals using a video signal decoder process; 3) adjusting an image size of each of the decoded image signals received from the image signal decoder process using an image size adjuster process; And 4) A method of providing a hybrid video conferencing service, comprising: transmitting a video signal whose image size is adjusted in an image size control process to a video signal post-processing system by using a high speed communication module. The method according to claim 10 or 15, Step e ') 1) transmitting a decoded and resized image signal received from the high speed communication module of the image signal preprocessing system to the image screen maker process using the high speed communication module; 2) combining video signals decoded and adjusted in image size using a video screen maker process into a set video screen layout; 3) adjusting the video signals received from the video screen maker process to an appropriate video size according to the specifications of the video terminal using the video signal controller process; 4) encoding the video signals received from the video signal adjuster process using a video signal encoder process; And 5) A method of providing a hybrid video conferencing service, comprising: transmitting a video signal encoded in the video signal encoder process to a corresponding video terminal by using a high speed communication module.

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