KR20100020726A - System and method for providing video chatting service - Google Patents

Abstract

PURPOSE: A system and a method for providing video chatting service are provided to reflect the chatting content in the video call by relating the video call and the chatting. CONSTITUTION: A call processing unit mediates the video call and chatting service between the communication terminals. A storage unit(230) stores the contents corresponding to each keyword of the keyword combination generation and keyword combination generation. A character recognition unit(240) recognizes the particular key word in the chatting message. An image synthesis unit(260) extracts the contents corresponding to the keyword recognized as described above from the storage unit. The contents extracted as described above are synthesized in the user image transmitted through the call processing unit.

Description

How to provide video chat system and video chat service {SYSTEM AND METHOD FOR PROVIDING VIDEO CHATTING SERVICE}

The present invention relates to a video call service, and more particularly, to a video chat system for providing a chat service during a video call and a method for providing a video chat service.

With the development of mobile communication technology, people can carry a mobile terminal and use voice calls on the go regardless of place. Recently, a video call service that provides a call away from a voice call and looking at the other party's face has been provided.

In order to use a video call, the user should position the camera provided in the mobile terminal to face his / her face, and the user should look at the mobile terminal at a predetermined distance to view an image of the other party displayed on the mobile terminal. As a result, when a video call is used, the mobile terminal and the user have a certain distance, and the voice of the other party output from the speaker must be louder than the general voice call.

Therefore, when a video call is made, the voice of the other party is not output enough to be understood only by the user, but is loud enough to be recognized by the surrounding people, thereby causing damage to those around. In addition, there is a problem that privacy is not protected because personal contents are exposed to people around without filtering. In order to solve this problem, users use earphones, but the inconvenience of having to carry the earphones at all times and the above-mentioned problems cannot be solved when the earphones are not carried.

Recently, a video chat service for chatting with a call counterpart during a video call has been provided. During the video call, the contents of the conversation can be exchanged with the call counterpart via text chat rather than voice, thereby solving the above-described problem. However, the chat service during the video call has not escaped the form of the video chat service provided in the wired network. In other words, video calls and chats are independently performed. The video is transmitted as a video and the chat conversation contents are independently transmitted to the call counterparts independently of the conversation contents, and simply replace the voice with the chat text during the video call.

In addition, the current video chat service is provided only when the user presses a separate menu or key for the chat service in the mobile terminal in order to use the chat service during the video call. The complexity of the terminal and the user who is not familiar with the terminal function is not easy to use the video chat service.

The present invention has been proposed in order to solve the above problems, and makes it possible to conveniently use a video chat service, and also a video chat service system for reflecting the chat contents in the video call in real time by interworking a video call and a chat, and its The purpose is to provide a method.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to a first aspect of the present invention for achieving the above object, a video chat system for providing a video chat service between communication terminals, call processing means for mediating video calls and chat services between communication terminals; Storage means for storing a keyword set and content corresponding to each keyword belonging to the keyword set; Text recognition means for recognizing a specific keyword in a chat conversation message exchanged between communication terminals; And image synthesizing means for extracting content corresponding to the keyword recognized by the character recognition means from the storage means and synthesizing the extracted content to a user image transmitted through the call processing means.

In addition, according to a second aspect of the present invention for achieving the above object, a method for providing a video chat service between communication terminals in the video chat system of the communication network, establishing a video call channel between a plurality of communication terminals; Receiving a chat message from one of the plurality of communication terminals; Recognizing a specific keyword in the received chat message; Extracting content corresponding to the recognized keyword from the content storing means; Synthesizing the extracted content with a user image received from a communication terminal transmitting the chat message; And transmitting the user image synthesized with the content to the counterpart communication terminal.

In addition, a method for providing a video chat service between communication terminals in a video chat system of a communication network according to a third aspect of the present invention for achieving the above object comprises: establishing a video call channel between a plurality of communication terminals; Receiving a conversational voice from one of the plurality of communication terminals; Speech recognition of a specific keyword in the received voice; Extracting content corresponding to the voice-recognized keyword from the content storage means; Synthesizing the extracted content with a user image received from a communication terminal transmitting the conversation voice; And transmitting the user image synthesized with the content to the counterpart communication terminal.

The present invention as described above, by recognizing a specific keyword in the chat content transmitted during the video call to reflect the corresponding content in real-time video call to enable a unique video call. In addition, the present invention can automatically use the video chat service by switching the mobile terminal to the chat mode automatically when the video call is started.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a network configuration of a video chat service providing system according to an exemplary embodiment of the present invention.

As shown in FIG. 1, the system according to the present embodiment includes a mobile terminal 110 and 120, a wireless access network 130, a switch 140, a home location register 150, and a video chat brokerage system 160. Include.

The mobile terminals 110 and 120 are terminals that support voice calls and video calls during movement. The mobile terminals 110 and 120 are provided with a camera for video call to transmit a video of a user photographed with the camera to a call counterpart, and display a video received from the call counterpart on a screen to enable a video call.

The mobile terminals 110 and 120 include a chat program that supports text chatting during a video call. The chat program displays a chat window on the screen during a video call, transmits the chat contents input by the user to the counterpart, and displays the chat contents sent by the counterpart. The mobile terminals 110 and 120 drive the chat program according to the H.245 invoke message received from the video chat intermediation system 160. In addition, when the mobile terminal 110 or 120 receives the call blocking message from the video chat intermediation system 160, the mobile terminal 110 or 120 does not output the voice of the other party during the video call.

In the present invention, a separate feature code for a video chat service may be used. In order to use the video chat service, the user inputs a function code (for example, * 12) and the called party's phone number to the mobile terminals 110 and 120, and attempts to make a call by pressing a video call button. However, the function code may not be used.

The radio access network 130 includes a base station NodeB and a base station controller RNC to support the mobile communication network access of the mobile terminals 110 and 120. The base station performs radio signal transmission and reception, radio channel encoding and decoding, signal strength and quality measurement, baseband signal processing, radio resource management, and self-maintenance functions under the control of a base station controller. The base station controller assigns and releases radio channels for the mobile terminals 110 and 120, controls transmission outputs of the mobile terminals 110 and 120 and base station soft cell and hard handoff decisions between cells, transcoding and vocoding. (Vocoding), operation and maintenance function for the base station.

The exchange 140 provides an interface function with the base station controller of the radio access network 130 and controls voice / video calls, data transmission and reception, and various additional services. In addition, the exchange 140 provides a connection with another external network. In the present invention, when the exchange 140 receives an image originating call sent from the mobile terminal 110 or 120, the exchange 140 inquires the called location information to the home location register 150 for processing of the originating call. The incoming call is processed according to the called location information.

In addition, when the exchange 140 receives an initial address message for incoming call processing, the exchange 140 attempts to make a call to the called party's mobile terminals 110 and 120 and receives a call response from the called party's mobile terminals 110 and 120. The response signal is transmitted to the originating device that sent the initial address message.

The home location register (HLR) 150 stores and manages a subscriber profile, subscriber location information, additional service information, and the like. The home location register 150 returns the called location information query response based on the caller's subscriber profile and the additional service information upon receiving the called location information query.

In the present invention, the home location register 150 registers and manages video chat service subscription information in subscriber profiles of video chat service subscribers. When the home location register 150 receives the incoming location information query from the exchange 140, the home location register 150 determines whether the caller has subscribed to the video chat service based on the subscriber profile using the caller's identification number. When the caller subscribes to the video chat service, the home location register 150 transmits routing information to the video chat intermediation system 160 to the exchange 140 as the incoming location information response.

Or, the home location register 150 stores and manages the identification code for the video chat service. When the incoming location information query received from the exchanger 140 includes the identification code for the video chat service, the home location register 150 sends routing information to the video chat intermediation system 160 based on the identification code. The called location information response is transmitted to the switch 140.

The video chat brokerage system 160 mediates a video call between the calling terminal and the called terminal and simultaneously provides a chat service. The general video call is made without the video chat intermediation system 160, but the video call in the video chat service according to the present invention is made via the video chat intermediation system 160. As the video chat intermediation system 160 receives the initial address message from the switch 140, the video chat intermediation system 160 proceeds with the call processing procedure to the called terminal to establish a video call connection between the calling terminal and the called terminal.

The video chat brokerage system 160. When a video call is initiated between the calling terminal and the called terminal via the video chatting intermediary system 160, an invoke message is sent to the calling terminal and the called terminal to instruct a chat program to be activated to activate the chat program of each terminal. The conversation message received through the chat program is transmitted to the counterpart terminal. In addition, the video chat intermediation system 160 transmits a handset sound blocking message to the calling terminal and the called terminal so that the voice of the other party received during the video call is not output.

The video chat intermediary system 160 may recognize a specific keyword in a chat message received through a chat program, search for content such as an emoticon, flash, video, etc. corresponding to the recognized keyword, and transmit the text to a chat counterpart. The video is synthesized and transmitted to the video call. When there are two or more recognition target keywords in the conversation message or when the recognition target keywords are simultaneously transmitted within a short time, the video chat intermediation system 160 synthesizes the video by giving priority to the first recognized keyword or the first transmitted keyword. In addition, the video chat brokerage system 160 may recognize a specific keyword in a voice transmitted to the counterpart during a video call, search for content such as an emoticon, flash, etc. corresponding to the recognized keyword, and transmit the same to the chat counterpart. It can be synthesized and transmitted to video for video call.

Alternatively, the video chat intermediation system 160 may replace the video with the content and transmit the content instead of synthesizing the content corresponding to the recognized keyword. For example, the video of the caller is replaced with the content and transmitted to the called terminal so that the content corresponding to the recognition keyword is displayed on the called terminal in place of the caller's video displayed on the called terminal.

In addition, the video chat intermediation system 160, if there is a string starting with a special character in the chat message received through the chat program, recognizes and processes the string accompanying the special character as a command. For example, when a conversation message of '@replacement video' is received, the video chat intermediation system 160 recognizes a substitute video, which is a string accompanying @, as a command and requests a substitute video to a substitute video service server, and the user's actual video. Replace with a substitute video to send to the other party. Alternatively, the video chat intermediation system 160 may directly store and manage the substitute video, and may replace the actual video and provide it to the call counterpart upon the user's request. In this case, as described above, it is natural that the content of the emoticon corresponding to the keyword is synthesized and transmitted to the call counterpart in the substitute video.

The reason for processing a character string starting with a special character in a conversation message received through a chat program as a command is that in a general video call, a key button can be input to use an additional service during a video call. If a key button is pressed to use an additional service in, it is recognized as a dialog message input and the additional service is not available. Therefore, when a special character and a character string are sequentially input in a video chat call, this is processed as a command for requesting a specific additional service, rather than a conversation message to be sent to the call counterpart.

The video chat brokerage system 160 registers and manages common content available to all video chat service subscribers and personal content individually set by each video chat service subscriber. The video chat intermediation system 160 recognizes text of a specific keyword in a chat message received through a chat program during a video call, and searches corresponding content such as emoticons and flashes in common content or in subscriber's personal content. The same applies to speech recognition.

2 is a block diagram showing the configuration of the video chat intermediation system of FIG.

As shown in FIG. 2, the video chat brokerage system 160 includes a gateway 210, an application server 220, a database server 230, a character recognition engine 240, a speech recognition engine 250, and image synthesis. It is configured to include a server 260.

The gateway 210 acts as a gateway for the signals received from the mobile communication network and the signals to be transmitted to the mobile communication network in cooperation with the switch 140 of the mobile communication network. The gateway 210 transmits a signal received from the mobile communication network to the application server 220.

The application server 220 mediates a video call between the mobile terminals 110 and 120 as call processing means. When the application server 220 receives the initial address message related to the call origination from the originating exchange through the gateway 210, the application server 220 transmits the initial address message to the destination exchange through the gateway 210 to between the calling terminal and the called terminal. Mediate a video call. Therefore, the video call between the calling terminal and the called terminal is made via the application server 220.

In addition, after the video call between the calling terminal and the called terminal is initiated, the application server 220 transmits a chat program driving message to the calling terminal and the called terminal at the same time to drive a chat program of each terminal, and sends a chat message. Send and receive In addition, the application server 220 transmits a call blocking message to the calling terminal and the called terminal so that the voice of the other party is not output from each terminal.

In addition, the application server 220 recognizes a string starting with a special character in the chat message, and requests an additional service accordingly to the related system.

The database server 230 stores and manages specific keywords and corresponding contents. The database server 230 includes a common keyword set that can be used by all the video chat service subscribers and their corresponding common contents (emoticons, flashes, etc.), and a personal keyword set that is individually set by each video chat service subscriber and corresponding thereto. Register and manage your personal content.

The text recognition engine 240 recognizes a specific keyword in a conversation message exchanged between video chat subscribers. The text recognition engine 240 extracts a specific keyword from the conversation message based on the keyword set registered in the database server 230. If there are two or more recognition target keywords in the conversation message, or if the recognition target keywords are simultaneously transmitted within a short time, the text recognition engine 240 synthesizes an image by giving priority to the first recognized keyword or the first transmitted keyword.

The voice recognition engine 250 voice-recognizes a specific keyword in a conversation voice exchanged between video subscribers during a video call. The speech recognition engine 250 recognizes and extracts a specific keyword from the conversation speech based on the keyword set registered in the database server 230.

The image synthesizing server 260 extracts the content corresponding to the specific keyword extracted from the text recognition engine 240 or the specific keyword extracted from the speech recognition engine 250 from the database server 230 and then sends the subscriber. To the video. The image synthesized with the content is transmitted to the conversation counter and displayed. That is, after recognizing the keywords included in the chat message and extracting the corresponding content, the extracted content is not sent together with the chat message, but the extracted content is synthesized with the video of the other party displayed on each subscriber's terminal during the video call. To send.

Alternatively, the image synthesis server 260 extracts the keyword corresponding to the specific keyword extracted from the character recognition engine 240 or the specific keyword extracted from the speech recognition engine 250 from the database server 230 and then extracts the keyword. Instead of synthesizing to the sent subscriber's video, the subscriber's video is replaced with the extracted content. The extracted content is displayed on the screen of the other party in place of the subscriber's video.

Hereinafter, the mobile terminal 110 of FIG. 1 will be described as a calling terminal and the mobile terminal 120 as a called terminal.

3 is a flowchart illustrating a video chat service method according to an embodiment of the present invention.

Referring to FIG. 3, the caller attempts a video call with the called terminal 120 by inputting the called person's telephone number into the calling terminal 110 and pressing a video call button. Accordingly, the outgoing call including the called party's telephone number is transmitted to the calling side exchange 140 (S301).

The originating exchange 140 receiving the outgoing call from the originating terminal 110 transmits the incoming location information query message to the home location register 150 to process the outgoing call and receives the incoming location information response message accordingly. To confirm the incoming call location information (S303). The home location register 150 loads routing information to the video chat intermediation system 160 in the destination location information response message based on the video chat service subscription information included in the caller's subscriber profile.

As another embodiment, the caller may enter an identification code for the video chat service other than the called party's telephone number in the calling terminal 110 and press a video call button to attempt a video call with the called terminal 120. In this case, the calling side exchange 140 requests the home location register 150 to interpret the identification code, and the home location register 150 interprets the identification code to recognize that it is a video chat service. Routing information to the video chat brokerage system 160 is transmitted to the exchange 140.

Preferably, the home location register 150 requests the routing number to the video chat relay system 160 that provides the service according to the present invention, and puts the received routing number in the called location information response message so as to send the calling side exchange 140. To send).

The source exchanger 140 confirming the destination location information transmits an initial address message (IAM) to the video chat relay system 160 providing the service according to the present invention (S305).

Upon receiving the initial address message, the video chat relay system 160 checks the destination location information using the called party's telephone number included in the initial address message and transmits the initial address message to the called side exchange 140 (S307). The confirmation of the destination location information generally consists of the same process as the source exchange confirming the destination location information. That is, the destination location information is confirmed from the home location register using the destination phone number.

The destination exchange 140 receiving the initial address message from the video chat relay system 160 transmits a call connection request message (i.e., setup message) to the destination terminal 120 (S309), and hooks off the recipient (i.e. In response to a call connection input, such as pressing a call button), receives a connection response message from the called terminal 120 (S311). In this case, a description of a typical call connection process such as a paging process and an allergic message is transmitted to the destination terminal 120 and an address complete message (ACM) is transmitted to the video chat relay system 160 is omitted. do.

The video chat relay system 160 receiving the connection response from the called terminal 120 transmits an answer message (ANM: Answer Message) to the calling exchange 140 to form a call with the calling terminal 110 ( S313), the video chat relay system 160 transmits a response message (ANM) to the calling side exchange 140 (S315). Accordingly, a bearer channel is formed between the calling terminal 110 and the called terminal 120 via the video chat relay system 160.

Next, the calling terminal 110 attempts a codec negotiation, that is, H.245 negotiation for a video call with the called terminal 120 (S317), and as the codec negotiation is completed, the calling terminal 110 and the called terminal ( 120 starts a video call (S319). The image of the caller taken by the calling terminal 110 is displayed and transmitted in real time to the called terminal 120, and the image of the called caller photographed by the called terminal 120 is displayed by being sent to the calling terminal 110 in real time. The caller and the called party face to face with each other.

After the video call is started between the calling terminal 110 and the called terminal 120 as described above, the video chat intermediation system 160 transmits an invoke message for driving the chat program to the calling terminal 110 and the called terminal 120. (S321. S323). In addition, the video chat intermediation system 160 transmits a handset block message to the calling terminal 110 and the called terminal 120. The calling terminal 110 and the called terminal 120 do not output the other party's voice based on the handset blocking message.

The calling terminal 110 and the called terminal 120 executes the chat program according to the invoke message received from the video chat intermediation system 160. The chat window by the chat program is preferably displayed at the bottom of the screen of the calling terminal 110 and the called terminal 120. The caller and the called party can talk to the other party through a chat window while watching the video of the other party displayed on the terminal screen.

For example, the caller inputs a conversation message to be sent to the called terminal 120 which is the conversation counterpart in the chat window displayed on the calling terminal 110. The input chat message is converted into an H.245 message and transmitted to the video chat mediation system 160 (S325), and the video chat mediation system 160 text-recognizes a specific keyword in the received chat message (S327). The video chat intermediation system 160 has a common set of keywords that can be used by all the video chat service subscribers and emoticons corresponding to the keywords, and also corresponds to individual keyword sets and individual keywords set by individual video chat service subscribers. To have individual content. The video chat intermediation system 160 recognizes a specific keyword in the conversation message based on the common keyword set or the personal keyword set.

The video chat intermediation system 160 extracts content such as an emoticon corresponding to the recognized specific keyword (S329). Content is extracted from common content available to all video chat service subscribers, or content is extracted from individual content set by individual video chat service subscribers. It is desirable to give priority to extracting content from individual content.

The video chat intermediation system 160 synthesizes the extracted content and the video of the caller to be transmitted to the called terminal 120 (S331). The video chat intermediation system 160 transmits the synthesized video to the called terminal 120 (S333). At the same time, the video chat intermediation system 160 transmits the received conversation message to the called terminal 120. Accordingly, the destination terminal 120 displays a video of the caller synthesized with the content of the conversation message sent by the caller and the content corresponding to the specific keyword included in the conversation message on the screen.

As another embodiment, the video chat intermediation system 160 may replace the video of the caller to be sent to the called terminal 120 with the extracted content and transmit the same to the called terminal 120. The extracted content is displayed on the screen of the called terminal 120 in place of the caller's image.

In the exemplary embodiment referring to FIG. 2, a specific keyword is recognized in a chat message and the corresponding content is synthesized into a video for a video call and then transmitted to the call counterpart. A specific keyword may be recognized in the transmitted voice, the corresponding content may be searched, synthesized into a video call, and transmitted to the call counterpart.

In the above-described embodiment, the caller is a general video chat service subscriber. The caller's video call is charged at the calling exchange. The calling exchange starts charging according to the video call from the point of receiving a call connection response message (ANM) from the called exchange. The mobile telecommunications service operates prepaid rates as well as these postpaid plans. You can use the call service only up to the amount you paid in advance. If you run out of prepaid rates, you cannot use the calling service. This prepaid service is provided through an intelligent network system.

When the caller is a prepaid subscriber, the video call call sent from the calling terminal 110 is received by the called terminal 120 via the intelligent network system, and the intelligent network system provides the video call within the caller's prepaid rate range. As a result, the video call call of the caller using the video chat service is transmitted to the destination terminal 120 via the intelligent network system and the video chat intermediation server 160, and the charging process is performed in the intelligent network system. In addition, the video chat intermediation server 160 transmits a chat program driving message to the calling terminal 110 and the called terminal 120 as described above, and recognizes and responds to a specific keyword in a chat message transmitted through the chat program. The content is searched for, synthesized in an image to be transmitted to the call counterpart, and transmitted to the call counterpart.

4 is a diagram illustrating a screen of a calling terminal and a called terminal using a video chat service according to an embodiment of the present invention.

As described with reference to FIGS. 1 to 3, when a video call is started between the calling terminal and the called terminal, the video chat intermediation system 160 transmits an invoke message, which is a chat program driving message, to the calling terminal and the called terminal. Drive. Therefore, as shown in (a) and (d) of FIG. 4, chat windows 401 and 403 other than the video of the person and the video of the other party are activated and displayed on the screen of the calling terminal and the called terminal. 4A illustrates an example of a screen of a calling terminal, and FIG. 4D illustrates an example of a screen of a called terminal. In (a) of FIG. 4, the calling party's video (A video), which is received in real time from the called terminal, is larger than the calling party's video (B video). On the contrary, in (d) of FIG. 4, the called terminal's image (B image) displayed in real time from the calling terminal is displayed larger than the called image (B image). However, the present invention is not limited thereto, and the video of the person and the other party may be displayed on the screen in the same size.

With the chat windows 401 and 403 activated, as shown in FIG. 4 (a), the caller inputs the conversation contents to be sent to the video call counterpart in the chat window 401. In Figure 4 (a) the caller enters "I love you ~". The conversation content input as described above is transmitted to the video chat mediation system 160, and the video chat mediation system 160 recognizes a specific keyword in the received chat content. In FIG. 4, the video chat intermediation system 160 recognizes a 'love' keyword and extracts a heart-shaped emoticon corresponding to the 'love' keyword. As shown in (c) of FIG. 4, the video chat intermediation system 160 synthesizes the extracted heart-shaped emoticon into a caller's video (B video) and transmits the same to the called terminal. The synthesized image is displayed. Therefore, as shown in (d) of FIG. 4, the receiving terminal displays a heart-shaped emoticon together in the real-time image of the caller (405).

According to the present invention as described above, the problem that the voice of the other party during the video call is not well understood through the chat function. Unlike a general voice call, a video call is a face-to-face call that allows the other party's voice to be output through the speaker of the terminal. By the way, the voice output through the speaker has a problem that causes noise to the people around, and if the volume is reduced due to this problem there is a problem that you can not hear the voice of the other party. In the present invention, by providing a chat function instead of a voice, it is possible to make a video call even in places where you need to keep quiet.

In addition, when using a chat service during a video call, contents such as emoticons and flashes are synthesized and displayed on the other party's video according to contents of a conversation, thereby providing communication that causes interest away from simple chat.

While this specification contains many features, such features should not be construed as limiting the scope of the invention or the claims. Also, the features described in the individual embodiments herein can be implemented in combination in a single embodiment. Conversely, various features described in a single embodiment herein can be implemented individually in various embodiments or in combination as appropriate.

Although the operations are described in a particular order in the drawings, they should not be understood as being performed in a particular order as shown, or in a sequence of successive orders, or all described actions being performed to obtain a desired result. . Multitasking and parallel processing may be advantageous in certain circumstances. In addition, it should be understood that the division of various system components in the above-described embodiments does not require such division in all embodiments. The program components and systems described above may generally be packaged in a single software product or multiple software products.

The method of the present invention as described above may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

1 is a diagram illustrating a network configuration of a video chat service providing system according to an exemplary embodiment of the present invention.

2 is a block diagram showing the configuration of the video chat intermediation system of FIG.

3 is a flowchart illustrating a video chat service method according to an embodiment of the present invention.

4 is a diagram illustrating a screen of a calling terminal and a called terminal using a video chat service according to an embodiment of the present invention.

Claims (12)

A video chat system that provides a video chat service between communication terminals, Call processing means for mediating a video call and chat service between communication terminals; Storage means for storing a keyword set and content corresponding to each keyword belonging to the keyword set; Text recognition means for recognizing a specific keyword in a chat conversation message exchanged between communication terminals; And And video synthesizing means for synthesizing the extracted content with the user image transmitted through the call processing means after extracting the content corresponding to the keyword recognized by the character recognition means from the storage means. The method of claim 1, The call processing means, A video chat system comprising a video call channel between communication terminals and transmitting an instruction message instructing driving of a chat program to each communication terminal to activate a chat program of each communication terminal. The method according to claim 1 or 2, The storage means, And a common keyword set and common content available to all users, and a keyword set and user-specific content set for each user. The method of claim 3, wherein The image synthesizing means, A video chat system comprising firstly extracting content to be synthesized into a user image using a user-specific keyword set and user-specific content, and secondly extracting the content using a common keyword set and common content. The method of claim 1, The call processing means, Recognizing a character string starting with a special character in the chat message, and performs the additional service processing according to the video chat system. The method of claim 1, And voice recognition means for voice recognition of a specific keyword in voices transmitted and received between communication terminals. The image synthesizing means, And extracting the content corresponding to the keyword recognized by the speech recognition means from the storage means, and then synthesizing the extracted content with the user image transmitted through the call processing means. A method for providing a video chat service between communication terminals in a video chat system of a communication network, (a) establishing a video call channel between a plurality of communication terminals; (b) receiving a chat message from one of the plurality of communication terminals; (c) recognizing a specific keyword in the received chat message; (d) extracting content corresponding to the recognized keyword from the content storing means; (e) synthesizing the extracted content with a user image received from a communication terminal transmitting the chat message; And (f) transmitting the user image synthesized with the content to the counterpart communication terminal. The method of claim 7, wherein Before step (b), And activating a chat program of each communication terminal by transmitting an instruction message instructing driving of a chat program to each communication terminal. The method according to claim 7 or 8, The content storage means, A common keyword set available to all users, common content corresponding to each keyword belonging to the common keyword set, and a user-specific keyword set set for each user and user-specific content corresponding to each keyword belonging to the user-specific keyword set are separately stored. Video chat service providing method, characterized in that. The method of claim 9, Step (d) is, Firstly extracting content from a user-specific keyword set and user-specific content; And And extracting content from the common keyword set and the common content when the first extraction fails. The method of claim 7, wherein After step (b), Checking whether the chat message includes a string starting with a special character; Recognizing the identified character string and performing additional service processing according to the identified character string. A method for providing a video chat service between communication terminals in a video chat system of a communication network, (a) establishing a video call channel between a plurality of communication terminals; (b) receiving a conversational voice from one of the plurality of communication terminals; (c) voice recognition a specific keyword in the received voice; (d) extracting content corresponding to the voice recognized keyword from the content storage means; (e) synthesizing the extracted content with a user image received from a communication terminal transmitting the conversation voice; And (f) transmitting the user image synthesized with the content to the counterpart communication terminal.

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