KR20070019295A - Method and system for providing lip-sync service for mobile communication subscriber - Google Patents

Abstract

A method for providing a lip sync service for a mobile subscriber and a system therefor are disclosed. A lip sync service providing method for a mobile subscriber of the present invention includes the steps of: generating and registering a lip sync character; Analyzing the audio signal to extract voice data; Mapping the shape of the mouth of the lip sync character in synchronization with the voice data; Generating lip sync media continuously operating using the lip sync character mapped with the mouth shape; And providing the lip sync media to the terminal. According to the present invention, by lip-syncing a three-dimensional character with a voice message and providing it to a mobile subscriber, the effect of message delivery can be improved and the individuality of each subscriber can be well expressed.

Description

Method for providing lip sync service for mobile subscribers and system for same {Method and system for providing lip-sync service for mobile communication subscriber}

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

1 is a schematic network diagram for providing a lip sync service according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating an internal configuration of the LSS system shown in FIG. 1.

3A is a flowchart illustrating an example of a lip sync character generation method performed by a lip sync character generation module.

3B is a flowchart illustrating an example of a voice extraction and processing method performed by a voice module.

4 is a flowchart illustrating an example of a method of providing a lip syncing service according to the present invention.

 5 is a flowchart illustrating a method of providing information using a lip syncing service of the present invention.

6 is a flowchart illustrating a method of transmitting a multimedia message using a lip syncing service according to the present invention.

7 is a diagram illustrating an example in which components of a face are recognized by a face analysis module and coordinate values are extracted.

8 is a diagram illustrating an example of photo mixing performed in a character template editing engine.

The present invention relates to a service for a mobile network subscriber, and more particularly, to generate a 3D (hereinafter referred to as 3D) character and to lip-sync 3D character video to a service subscriber by lip-syncing the movement of the generated 3D character with a voice message. To a server and a system therefor.

With the development of networks and cyberspace, technologies that use characters that represent themselves rather than their true form are increasing. One of them is an avatar. An avatar is an animated character on behalf of a network visitor. The avatar is used for e-mail, chat, and the like, and is being used for cyber shopping malls, virtual education, and virtual offices. By the way, simply displaying an avatar or a character on the screen does not satisfy the needs of various consumers, and much research has been conducted on the lip sync to operate the character according to the voice.

On the other hand, the services provided in the mobile communication network is mainly based on the voice-based or text-based services due to the limitation of the characteristics of the mobile communication network such as limited radio resources. Typical examples are voice message service and short message service. Recently, as the mobile communication network evolves, various multimedia services have been studied and provided. Character text services and multimedia text services are typical. The service using a character in a mobile communication network according to the prior art is monotonous or ineffective in delivering a message because the character is not properly associated with a voice message. In addition, the characters are limited, so they are insufficient to express individual personalities of mobile communication subscribers or do not satisfy the desire of subscribers to express their own unique personalities.

Accordingly, a method of providing a lip-synchronized 3D character video to a service subscriber by generating a 3D character (hereinafter referred to as 3D) character and lip-syncing the generated 3D character's movement with a voice message is required.

The present invention has been made in an effort to provide a method for automatically generating a natural video by providing a mobile communication terminal by linking (lip-syncing) a 3D character with a voice message, a server, and a system therefor.

According to an aspect of the present invention, there is provided a lip sync service providing method for a mobile subscriber, the method comprising: generating and registering a lip sync character; Analyzing the audio signal to extract voice data; Mapping a mouth shape of the lip sync character in synchronization with the voice data; Generating lip sync media continuously operating using the lip sync character mapped with the mouth shape; And providing a lip sync media to a terminal, and a recording medium recording a lip sync service for a mobile subscriber and a program for executing the lip sync media.

Preferably, extracting the voice data comprises analyzing a frequency of the audio signal; And extracting the voice data by removing noise and non-voice signals from the audio signal.

Also preferably, the lip sync service providing method may include: recognizing an emotional state by analyzing the extracted voice data; And setting a facial expression value according to the recognized emotional state, wherein the set facial expression value is used to generate the lip sync media.

Also preferably, the step of generating and registering the character for lip syncing may include: producing a basic character through three-dimensional modeling; Recognizing a component of a face from a still image; Extracting coordinate values corresponding to the component; And generating a character for the lip sync using the extracted coordinate value and the basic character.

According to another aspect of the present invention, a lip sync service providing system for a mobile subscriber, a lip sync character generation module for generating and registering a lip sync character; A voice module for analyzing voice signals and extracting voice data; A lip sync engine configured to map a mouth shape of the lip sync character in synchronization with the voice data; An animation engine that generates lip sync media that continuously operates using the lip sync character mapped with the mouth shape; And a lip sync service system for a mobile subscriber including a network interworking unit for interworking with other devices to provide the lip sync media to the terminal.

Preferably, the lip sync service system includes a content storage unit for storing the lip sync character; A content manager to manage the lip sync content stored in the content storage; A media storage unit for storing the lip sync media; And a media manager configured to manage the lip sync media stored in the media storage.

Also preferably, the lip sync character generation module may include: a face analysis module configured to recognize a component of a face from a still image and extract coordinate values corresponding to the component; And a character template editing engine configured to produce a basic character through 3D modeling, and to generate the lip sync character using the extracted coordinate values and the basic character. The voice module may be configured to generate a frequency of the audio signal. The voice analysis module extracts the voice data by removing noise and non-voice signals from the audio signal, and analyzes the extracted voice data to recognize an emotional state, and sets an expression value according to the recognized emotional state. A voice template editing engine.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic network diagram for providing a lip sync service according to an embodiment of the present invention. Referring to FIG. 1, in order to provide a lip syncing service according to an embodiment of the present invention, a network includes a Lip-Sync Service (LSS) system 110, an Interactive Voice Response (IVR) / ARS (Automatic Response System) Server 130, MMSC (140), home location register (HLR 150), terminal information DB (160) and customer management system (CS) 170. In addition, a billing system (not shown), a gateway (not shown) for interworking with other networks, etc. may be further provided, and a user interface environment that allows a user to access the LSS system 110 and perform contents setting and the like. In order to provide the above, it is preferable that a web server 122, a WAP (Wireless Application Protocol) server 124 and a VM (Virtual Machine) server 126 connected to the LSS system are further provided.

The mobile telephones 191a and 191b include a mobile terminal capable of making a phone call, for example, a mobile phone or a PDA. The mobile network 195 is not shown in detail, but includes a base station (not shown), a base station controller (not shown), an exchanger (not shown), and the like. Since these components are well known to those skilled in the art, detailed descriptions are omitted.

The LSS system 110 generates and registers a lip sync character, analyzes an audio signal, extracts voice data, and synchronizes the mouth shape of the lip sync character in synchronization with the extracted voice data to continuously operate a lip sync character, That is, LSS media is generated.

FIG. 2 is a block diagram illustrating an internal configuration of the LSS system 110 shown in FIG. 1.

Referring to this, the LSS system 110 may include a lip sync character generation module 21, a voice module 23, a user interface unit 245, a content manager 250, a content storage unit 255, and a lip sync engine lip-. Sync engine 260, animation engine 270, media manager 290, media storage 295, and network interworking unit 280.

The lip sync character generation module 21 is a module for generating and registering a lip sync character. 3A is a flowchart illustrating an example of a lip sync character generation method performed by the lip sync character generation module 21. Referring to FIG. 3A together, the operation of the lip sync character generation module 21 will be described as follows.

The components of the face are recognized from the two-dimensional still image (photograph), for example, the shape of the face, the shape of the eyes, the nose, the mouth, and the like (step 311). The user may upload a picture necessary for generating a lip sync character to the LSS system 110. The user accesses the web server 122 using the PC 192a or the WAP (Wireless Application Protocol) server 124 or the VM (Virtual Machine) server 126 using the terminal 192b. You can upload photos, look up characters for lip syncing, and set and change them.

When the components of the face are automatically recognized, coordinate values of the components of the face are extracted (step 313). In operation 315, a character for lip sync is generated using the extracted coordinate values.

The lip sync character generation module 21 specifically includes a face analysis module 210 and a character template edit engine 220.

The face analysis module 210 automatically recognizes components of a face, for example, a contour of the face, eyes, a nose, a mouth, and the like in the still image (eg, a photo), and extracts coordinated coordinate values. FIG. 7 is a diagram illustrating an example in which components of a face are recognized by the face analyzing module 210 and a coordinate value is extracted. Referring to FIG. 7, it can be seen from the face photograph that the face contour, eyes, eyebrows, nose, mouth, ears, and the like are recognized and represented by coordinate values.

The character template editing engine 220 generates a character for lip sync using the coordinate values of the face component extracted by the face analysis module 210. The character template editing engine 220 also produces a basic character which is basically required for generating a character for lip sync. Specifically, the character template editing engine 220 generates a mesh-type basic character by three-dimensionally modeling a human shape (particularly, a face shape). Then, a character for lip sync is generated by applying the coordinate values of the facial component extracted by the face analysis module 210 to the produced basic character.

The character template editing engine 220 may also variously modify the lip sync character. For example, a deformed character may be generated by application processing such as wearing an accessory to a character, changing a costume, or changing a hairstyle. Character template editing engine 220 also preferably performs a photo mixing function. Photo-mixing is a technique of synthesizing different images or characters, an example of which is illustrated in FIG. 8.

Referring to FIG. 8, it can be seen that various deformed characters are generated by composing a specific face picture (or character) with another picture (or character or avatar). Photos or avatars needed for compositing are preferably stored and managed in a separate DB.

The character template editing engine 220 applies a coordinate value of the face components extracted by the face analysis module 210 to another photo or avatar to perform a photo mixing function. The photo mixing function may be provided in a module other than the character template editing engine 220.

The voice module 23 is a module that analyzes an audio signal to extract voice data and processes it if necessary. The voice module 23 includes a voice analysis module 230 and a voice template editing engine 235.

The voice analysis module 230 analyzes the frequency of the sound (audio signal) and the like, and separates and extracts only the voice by removing noise and extraneous signals from the audio signal. The speech template editing engine 235 analyzes the extracted speech data to recognize the emotional state and sets the facial expression value according to the recognized emotional state. The speech template editing engine 235 may also perform a function of modulating / transforming the extracted speech. The speech module 23 may further include a text-to-speech module (not shown) in addition to the speech analysis module 230 and the speech template editing engine 235. The text-to-speech module (not shown) is a module for converting a text message into voice data when it is input.

3B is a flowchart illustrating an example of a speech extraction and processing method performed by the speech analysis module 230 and the speech template editing engine 235. The function performed by the voice analysis module 230 and the voice template editing engine 235 will be described in more detail with reference to the following.

When the audio signal is received, the voice analysis module 230 first obtains a frequency from the received audio signal, and analyzes the frequency range, the persistence, the repeatability, and the like to determine the presence or absence of the voice (steps 321 and 323). In the audio signal, sound or noise other than voice is removed and only voice is separated and extracted (step 325). This is to create an LSS media that is accurately synchronized with only the voice data by separating and extracting only the voice data when voice data and non-voice data (for example, music, background sound, etc.) are mixed. If only voice data is not separated, the character can move in synchronization with non-voice data. That is, a real human voice may not be heard, and a mouth movement error may occur.

When the voice data is separated and extracted, the voice template editing engine 235 analyzes the extracted voice (step 327) to recognize an emotional state (eg, anger, joy, surprise, sadness, etc.) (step 329). The elements that can recognize the emotional state from the speech signal are tone, pitch of the speech signal, formant frequency, speech speed, sound quality, and the like. Accordingly, the emotion state is recognized by analyzing the spectrum, tone, pitch, and the like of the speech signal (steps 327 and 329). When the emotional state is recognized, the facial expression value corresponding to the emotional state is set (331). Accordingly, the voice module 23 may generate voice content including voice data and facial expression values. The facial expression value is used when generating LSS media. The speech template editing engine 235 may also modulate or synthesize the extracted speech (step 333). Voice modulation is a technique for converting extracted speech patterns into synthesized sounds or other speech patterns and outputting them. For example, the extracted voice is converted into a voice of another gender (female or male), or a child voice or a specific celebrity voice.

The user interface unit 210 provides a user interface function in association with the web server 122, the swap server 124, the VM server 126, and the like. As illustrated in FIG. 1, a user connects to the LSS system 110 through a web server 122, a swap server 124, and a VM server 126 using a PC 192a, a mobile terminal 192b, or the like. Thus, the lip sync character or voice content can be inquired, changed, and set.

The lip sync character and the voice content are stored in the content storage unit 255 by the content manager 250. In order to facilitate content management, the content management unit 250 preferably assigns an identifiable ID to content to be stored / generated.

The lip sync engine 260 maps the mouth shape of the lip sync character in synchronization with the voice data. To this end, the lip-sync engine 260 analyzes the voice of a person as a vowel and stores mouth data corresponding to each voice vowel. For example, if the input voice is Korean pronunciation, ㅏ (아), ㅑ (야), ㅓ (어), ㅕ (Female), ㅗ (오), ㅛ (요), ㅜ (우), ㅠ Analyzes with vowels such as (Y), ㅡ, ㅣ, and if the inputted voice is English pronunciation, a (a), e (e), i (o), o (o) and u (right) and the like are analyzed, and mouth-shaped data corresponding to each collection is stored.

Then, the lip sync engine 260 maps the mouth shape of the lip sync character to the mouth shape of the corresponding collection place according to the collection place of the voice data. By doing so, the lip sync engine 260 creates a lip sync character having mouth-shaped data mapped to the vowels according to the vowels of the voice data, in particular vowel data.

The animation engine 270 generates lip sync media that continuously operates using a lip sync character mapped with a mouth shape. That is, the animation engine 270 moves other components (eg, eyes, eyebrows, head, etc.) in addition to the shape of the lip-sync character to generate a character that is continuously operated in time, that is, an animation character. At this time, the animation engine 270 may generate the LSS media by using the facial expression value set by the voice module 23. That is, the animation engine 270 operates the lip sync character differently according to the facial expression value, so that an expression such as an angry facial expression, a surprised facial expression, a happy facial expression, or the like is expressed during the animation of the character. The generated LSS media is stored in the media storage 295 by the media manager 290. In order to facilitate media management, the media manager 290 preferably assigns an identifiable ID to the media to be stored / generated.

The LSS media generated by the animation engine 270 is provided to the terminal through the network interworking unit 280.

The network interworking unit 280 provides an interworking function with the IVR / ARS 130, the MMSC 140, the HLR 150, the terminal information DB 160, the customer center 170, and the like. In a preferred embodiment, the network interworking unit 280 transmits the generated LSS media to the MMSC 140, and requests the MMSC 140 to generate a multimedia message including the LSS media to the terminal.

The network interworking unit 280 also checks the attribute information including the media format information and the codec information of the terminal through the terminal information DB 160 and converts the LSS media according to the terminal attribute information. desirable.

Referring back to FIG. 1, the HLR 150 receives location information of a called terminal in real time from a mobile communication exchange (not shown) included in the mobile network 195 and connects a call between the caller and the called party. In addition, the HLR 150 checks the status of the subscriber, such as whether the subscriber terminal is powered on / off or other authority verification.

The terminal information DB 160 stores the subscriber terminal attribute information and provides attribute information of the corresponding terminal in response to a request of the LSS server 120.

The customer center 170 is for the mobile network 11 operator to manage information about the subscriber, and the subscriber information is stored in the customer center internal DB (not shown). That is, the customer center 170 stores and manages subscriber information in an internal DB (not shown) according to service registration, termination or information change of the subscriber.

4 is a flowchart illustrating a method of providing a lip syncing service according to an embodiment of the present invention. Before the steps shown in FIG. 4, it is preferable to first perform the steps of generating the lip-sync character shown in FIG. 3A and extracting and processing the voice data shown in FIG. 3B.

When the user requests a lip syncing service, the LSS system first extracts a lip syncing character previously generated and registered in the storage unit, and separates and extracts voice data.

Next, as shown in FIG. 4, the lip sync carrier is synchronized with the voice data by mapping the mouth shape of the lip sync character into a mouth shape suitable for each vowel according to the collection of voice data, particularly voice data. (Step 431).

Next, LSS media continuously operated using the lip sync character mapped with the mouth shape are generated (step 433), and the generated LSS media are provided to the terminal (step 435). In step 435, it is preferable to convert the format and the codec of the LSS media according to the media format and the codec of the terminal with reference to the attribute information of the terminal and provide the converted LSS media to the terminal.

The lip sync service providing method according to the present invention can be applied to various services using a mobile communication network. For example, a user may transmit a multimedia message to the present invention using a lip sync service providing method. In addition, the present invention can also be applied to an information service provided by voice or text, video communication, or conference call.

5 to 6 show an application example of a lip sync service providing method according to the present invention. First, FIG. 5 is a flowchart illustrating an information providing method using a lip syncing service of the present invention.

Referring to this, the information providing apparatus provides voice and / or text information to the LSS system 110 through a communication network such as an Internet network or a LAN network (step 510). Here, the information providing device may be an ARS device for providing voice information, a web server for providing text information, or the like. The LSS system 110 extracts a lip sync character and generates LSS media by synchronizing the extracted lip sync character with voice data (steps 512, 515, and 520).

In step 512, if the received data is not voice data, the LSS system 110 first converts the received data into voice data. The lip sync character used for providing information is preferably set in advance by a user, an information provider or a lip sync service provider and stored in the media storage of the LSS system 110. At this time, the character for lip-sync may be set differently according to the type of information-for example, whether the type of information is news, stock information, weather.

When the LSS media is generated, the LSS system 110 transmits the LSS media to the MMSC (step 525). Then, the MMSC generates a multimedia message including the LSS media (step 527) and transmits the message to the terminal (step 530). The terminal receives the multimedia message and plays the LSS media (step 535). Accordingly, the terminal user may be provided with the lip synced video.

6 is a flowchart illustrating a method of transmitting a multimedia message using a lip syncing service according to the present invention. In the multimedia message transmission method illustrated in FIG. 6, when a caller inputs a voice message, a method of providing a lip synced video and a voice message to a called party by generating a lip synced video, that is, LSS media, is input to the input voice message. .

Referring to each step of the multimedia message transmission method using the lip sync service of the present invention in detail with reference to Figure 6, the user first enters a predetermined feature code (for example, * + number) and the called number at the calling terminal and the call When a call is requested by pressing a key, the caller terminal transmits a call signal including a feature code and a called number to the exchange according to a user's request (step 610).

The exchange interprets the feature code included in the outgoing signal (step 615), and if it corresponds to the lip-sync service, connects the call to the LSS system (step 620). When the call is connected to the LSS system, the caller inputs a voice message to be delivered to the called party, and the calling terminal transmits the voice message to the LSS system (step 625).

When the call is connected to the LSS system, the LSS system may provide a preset announcement to the calling terminal. To this end, the LSS system preferably provides an ARS function. Upon receiving the voice data, the LSS system 110 extracts a lip sync character corresponding to the caller identification number (step 635). At this time, if the character for lip sync corresponding to the caller identification number is not set in advance, a default character can be used.

The LSS system 110 generates the LSS media by synchronizing the lip sync character with the voice data (step 640), and transmits the generated LSS media to the MMSC (step 645). Then, the MMSC generates a multimedia message including the LSS media (step 647) and transmits the message to the called terminal (step 650). The called terminal receives the multimedia message and plays the LSS media (step 655). Accordingly, the called terminal user can be provided with the lip synced voice message sent by the calling party.

Unlike the procedure shown in FIG. 6, the caller may request a lip syncing service by sending a text message. Similar to sending a text message, when a caller composes a text message at the terminal and presses a predetermined key, the text message may be transmitted to the LSS system to perform a lip syncing service. When the text message is transmitted to the LSS system, the LSS system converts the text message into voice, generates a lip synced video, that is, LSS media, and provides the lip synced video and the text message to the called party through the MMSC.

In the above-described application example of the present invention, an example applied to the information providing service and the multimedia message transmission service of the present invention has been described. However, the present invention can be applied to various services in addition to these services. For example, the present invention may be applied to a message call service that delivers a voice message, and simultaneously provide voice and LSS media. The invention may also be applied to video or conference call services. The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. And functional programs, codes and code segments for implementing the present invention can be easily inferred by programmers in the art to which the present invention belongs.

Although the present invention has been described with reference to the above embodiments, it is merely exemplary, and it should be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. will be. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

According to the present invention, by lip-syncing a three-dimensional character with a voice message and providing it to the mobile subscriber, the effect of message delivery can be improved. In addition, the subscriber can express his or her personality by setting a character representing himself and using it for various mobile communication services, for example, a multimedia message transmission service, an information providing service, a video call service, and the like.

Claims (18)

In the lip sync service providing method for a mobile subscriber, Generating and registering a character for lip syncing; Analyzing the audio signal to extract voice data; Mapping the shape of the mouth of the lip sync character in synchronization with the voice data; Generating lip sync media continuously operating using the lip sync character mapped with the mouth shape; And Providing the lip sync media to a terminal. The method of claim 1, wherein extracting the voice data Analyzing the frequency of the audio signal; And And extracting the voice data by removing the noise and the non-voice signal from the audio signal. The method of claim 2, wherein the lip syncing service is provided. Analyzing the extracted voice data to recognize an emotional state; And Setting a facial expression value according to the recognized emotional state, And the set facial expression value is used to generate the lip sync media. The method of claim 1, wherein the generating and registering the character for lip sync is performed. Producing a basic character through three-dimensional modeling; Recognizing a component of a face from a still image; Extracting coordinate values corresponding to the component; And And generating the lip sync character by using the extracted coordinate value and the basic character. The method of claim 4, wherein the generating and registering the lip sync character is performed. And applying the lip sync character to generate a modified lip sync character. The method of claim 4, wherein the generating and registering the lip sync character is performed. Assigning an identifier to the lip-syncing character; And And storing the lip sync character according to the identifier. The method of claim 1, wherein the lip syncing service is provided. Identifying attribute information including media format information and codec information of the terminal; And And converting the lip sync media according to the terminal attribute information. The method of claim 1, wherein the providing of the lip sync media to the terminal comprises: Transmitting the lip sync media to a multimedia message center, The multimedia message center generates a multimedia message including the lip sync media, and transmits the generated multimedia message to the terminal. A recording medium having recorded thereon a program which can be read and executed by a digital signal processing apparatus as a program for performing the method of any one of claims 1 to 8. In the lip sync service providing system for a mobile subscriber, A lip sync character generation module for generating and registering a lip sync character; A voice module for analyzing the audio signal and extracting voice data; A lip sync engine configured to map a mouth shape of the lip sync character in synchronization with the voice data; An animation engine that generates lip sync media that continuously operates using the lip sync character mapped with the mouth shape; And A lip sync service system for a mobile subscriber including a network interworking unit for interworking with other devices to provide the lip sync media to a terminal. The lip-sync service system of claim 10, wherein A content storage unit for storing the lip sync character; A content manager to manage the lip sync content stored in the content storage; A media storage unit for storing the lip sync media; And And a media management unit for managing the lip sync media stored in the media storage unit. The method of claim 10, wherein the lip sync character generation module A face analysis module for recognizing a component of a face from a still image and extracting coordinate values corresponding to the component; And And a character template editing engine for creating a basic character through three-dimensional modeling and generating the lip sync character using the extracted coordinate values and the basic character. The method of claim 12, wherein the character template editing engine A lip sync service system for a mobile subscriber, characterized in that for generating a modified lip sync character by applying the lip sync character. The method of claim 10, wherein the voice module And a voice analysis module for analyzing the frequency of the audio signal to remove noise and non-voice signals from the audio signal to extract the voice data. The method of claim 14, wherein the voice module And a voice template editing engine configured to analyze the extracted voice data to recognize an emotional state and set an expression value according to the recognized emotional state. The method of claim 15, wherein the animation engine Lip sync service system for generating a lip sync media by operating the lip sync character differently according to the facial expression value. The method of claim 10, wherein the network linkage And identifying the attribute information including the media format information and the codec information of the terminal and converting the lip sync media according to the terminal attribute information. The method of claim 10, wherein the network interlocking unit, Send the lip sync media to a multimedia message center, The multimedia message center generates a multimedia message including the lip sync media, and transmits the generated multimedia message to the terminal.

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