KR100747707B1 - Method and System for Providing Video Telephony Service Interworking Instant Messenger System and Video Telephony Terminal - Google Patents

Abstract

The present invention relates to a video telephone service providing method and system through the interworking of a video telephone system and an instant messenger system.

The present invention provides an instant messenger server for providing an instant messenger service, an outgoing / incoming video telephone terminal for transmitting and receiving video telephone calls, and an intermediate part for transmitting and receiving video signals to implement a video telephone service between the outgoing video telephone terminal and the incoming video telephone terminal. In a system comprising a video telephone network as a medium, a video telephone interworking server that connects the video telephone call between the calling video telephone terminal and the called video telephone terminal and provides the video telephone service, the video telephone terminal and the instant messenger system. A method of providing a video call service with each other, the method comprising the steps of: (a) receiving a video call request message including transmission subscriber information from the calling video telephone terminal through a video telephone network; (b) extracting the transmitting subscriber information included in the video call request message and searching the subscriber information database using the extracted transmitting subscriber information as a query to determine whether there is matching stored subscriber information; (c) when it is determined in step (b) that the stored subscriber information corresponding to the transmission subscriber information is retrieved from the subscriber information database, the video call request message is sent to the incoming video telephone terminal corresponding to the transmission subscriber information. Transmitting to; And (d) receiving a video call response message from the incoming video telephone terminal and transmitting the video call response message to the calling video telephone terminal through the video telephone network to perform the video telephone call between the calling video telephone terminal and the incoming video telephone terminal. It provides a video telephone service providing method through the interworking of an instant messenger system and a video telephone terminal comprising a.

According to the present invention, if a video telephone service is introduced between a personal computer installed with an instant messenger and a mobile / wired video telephone terminal, video phone service activation and wireless data sales can be greatly increased.

Video call, Instant messenger, Video call, Landline video call, Wireless video call

Description

Method and System for Providing Video Telephony Service through Interworking Instant Messenger System and Video Phone Terminal Interworking Instant Messenger System and Video Telephony Terminal}

1 is a configuration diagram briefly showing a video telephone service providing system through interworking of an instant messenger system and a video telephone terminal according to a preferred embodiment of the present invention;

2 is a block diagram showing an internal configuration of a video telephone interworking server according to a preferred embodiment of the present invention;

3 is a flowchart illustrating a video telephone service providing method through interworking of an instant messenger system and a video telephone terminal.

<Explanation of symbols for the main parts of the drawings>

100: mobile video telephone terminal 110: wired video telephone terminal

120: mobile video telephone network 130: wired video telephone network

140: video telephone interworking server 150: instant messenger server

160: Internet 170: user terminal

180: subscriber information database 200: receiver

210: inquiry unit 220: control unit

230: content conversion unit 240: transmission unit

The present invention relates to a video telephone service providing method and system through the interworking of a video telephone system and an instant messenger system. More specifically, when a video call request message is generated from an outgoing video phone terminal, which is a personal computer installed with an instant messenger, and transmitted to a server, the server uses the subscriber information included in the video call request message to determine whether it is a mobile video phone terminal or a wired video. Determining whether it is a telephone terminal and transmitting a video call request message to the corresponding terminal, receiving a video call response message and transmitting the video call response message to the calling video telephone terminal, thereby providing a video telephone service between the calling video telephone terminal and the incoming video telephone terminal. The present invention relates to a method and a system for providing a video telephone service through interworking of an instant messenger system and a video telephone terminal.

Due to the development of mobile communication technology, a service provided by a code division multiple access (CDMA) mobile communication system is not only a voice service but also a multimedia that transmits data such as circuit data or packet data. It is developing into a communication service.

In addition, due to the development of information and communication, IMT-2000 (International Mobile Telecommunication 2000), which is a third generation mobile communication system established by ITU-R as a standard, has been commercialized. IMT-2000 is CDMA 2000 1X, 3X, EV-DO, WCDMA (WideBand CDMA), etc .. It is a service that can provide wireless Internet at a transmission speed of up to 144 Kbps, much faster than the supportable data transfer rate of 14.4 Kbps or 56 Kbps. In particular, by using IMT-2000 service, it is possible to provide various multimedia services (AOD, VOD, etc.) at a faster speed as well as improving existing voice and WAP service quality.

With the development of the communication service performance, the utility value of the video telephony system, which is a system that can visually and visually communicate with each other at a distance with the basic configuration of hardware and software capable of processing video and audio information in real time, have. The use of such video telephony system can maximize business efficiency by improving business efficiency and making quick decision-making by eliminating frequent business trips in meeting-oriented cultures. It can be expected to have the side effect of facilitating the latest exchange of information between medical institutions, and can be used in medical institutions for patient management, telemedicine, and in the field of education.

The basic functions that video telephone terminals should have for communication with each other include video and audio input / output function and codec (Codec, Coder and Decoder) function, which is a video transmission device that compresses and encodes high resolution video data and audio data in real time, Communication control functions for controlling communication between terminals are required, and additionally, user data transmission, video message storage, and collaboration functions are required. In order to develop a video telephone system having these basic functions, a transmission path is required. Several factors should be considered, including the form and quality of the components, the methods for intercommunication and the relevant standards and applied technologies.

On the other hand, in recent years, a wireless Internet service that can use the Internet via a wireless communication network has emerged even while the mobile subscribers are moving without restriction of the place. Therefore, mobile communication subscribers can freely move and talk with the other party anytime and anywhere using the voice call service, as well as various contents (for example, games, chats, securities, Financial transactions, news, weather, sports, traffic information, etc.) can be provided in various forms such as text, voice, and image.

Nowadays, instant messengers capable of chatting and transmitting and receiving various data among a plurality of users in real time on the Internet are in the spotlight. Instant messenger is a chat service for chatting with a plurality of users by text, voice, etc., a data transmission service for exchanging various data such as still image, video, music, etc. with the counterpart user, and various information (for example, news stock, weather, It refers to information providing service providing music, e-mail, etc.), and an SMS message sending service for transmitting an SMS (Short Message Service) message to a mobile communication terminal. In general, a user mounts an instant messenger on a wired terminal (eg, a personal computer, a laptop, etc.) capable of connecting to the Internet. However, such an instant messenger has a disadvantage in that the instant messenger can be properly used only by using a wired terminal by moving to a place where the user can connect to the Internet due to mobility restrictions.

Recently, in order to solve the problem of the instant messenger, the instant messenger has been installed in a mobile communication terminal. Here, the instant messenger mounted in the mobile communication terminal is defined as a 'mobile instant messenger'. A user can use a mobile instant messenger without being restricted in mobility, that is, log on to the mobile instant messenger and use a chat service, a data transmission service, an information service service, and an SMS message transmission service while on the move. Here, a chat service, a data transmission service, an information providing service, and an SMS message transmission service are collectively defined as an instant messenger service for convenience of description.

The instant messenger service is mostly used in wired terminals capable of internet due to problems such as communication cost and speed, rather than those used in mobile communication terminals.

In addition, the video telephony service described above has a disadvantage in that the video telephony service is not activated due to the low penetration rate of the video telephony terminal despite the excellent advantage of providing a video service.

Therefore, when a video telephone service is introduced between a video telephone terminal and a wired terminal (PC) capable of instant messenger beyond the concept of video telephone service between video telephone terminals, the activation of the video telephone service and the wireless data sales can be greatly improved. It is this invention which paid attention to. Until now, there has been no technology for implementing a video telephone service by interworking a wired terminal using an instant messenger and a video telephone terminal.

In order to solve this problem, the present invention generates a video call request message from an outgoing video telephone terminal, which is a personal computer installed with an instant messenger, and transmits the video call request message to the server, and the server moves using the subscriber information included in the video call request message. It determines whether it is a video phone terminal or a wired video phone terminal, and transmits a video call request message to the terminal, receives a video call response message, and transmits the video call response message to the calling video telephone terminal. An object of the present invention is to provide a method and system for providing a video telephone service through interworking of an instant messenger system providing a telephone service and a video telephone terminal.

In order to achieve the above object, the present invention provides an instant messenger server for providing an instant messenger service, an outgoing / incoming video telephone terminal for transmitting and receiving video telephone calls, and a video telephony service between the outgoing video telephone terminal and the incoming video telephone terminal. In a system comprising a video telephone network as an intermediate medium for transmitting and receiving video signals, a video telephone interworking server for connecting the video telephone call between the calling video telephone terminal and the incoming video telephone terminal, and providing the video telephone service. A method of providing a video call service to each other by linking a video telephone terminal and an instant messenger system, the method comprising: (a) receiving a video telephone request message including transmission subscriber information from the calling video telephone terminal through a video telephone network; (b) extracting the transmitting subscriber information included in the video call request message and searching the subscriber information database using the extracted transmitting subscriber information as a query to determine whether there is matching stored subscriber information; (c) when it is determined in step (b) that the stored subscriber information corresponding to the transmission subscriber information is retrieved from the subscriber information database, the video call request message is sent to the incoming video telephone terminal corresponding to the transmission subscriber information. Transmitting to; And (d) receiving a video call response message from the incoming video telephone terminal and transmitting the video call response message to the calling video telephone terminal through the video telephone network to perform the video telephone call between the calling video telephone terminal and the incoming video telephone terminal. It provides a video telephone service providing method through the interworking of an instant messenger system and a video telephone terminal, characterized in that it comprises a.

According to another object of the present invention, an instant messenger server for providing an instant messenger service, an outgoing / incoming video telephone terminal for transmitting and receiving video telephone calls, and a video telephony service between the outgoing video telephone terminal and the incoming video telephone terminal are implemented. A system for providing a video call service between a video telephone terminal and an instant messenger system by providing a video telephone network as an intermediate medium for transmitting and receiving video signals, the video telephone including transmission subscriber information from the calling video telephone terminal. Receiving a request message, the subscriber information database is searched using the query word to determine whether there is a matching stored subscriber information, and when it is determined that there is matching data, before the incoming image corresponding to the transmitting subscriber information. Transmitting the video call request message to a terminal, receiving a video call response message from the incoming video telephone terminal as a response message, and transmitting the video call response message to the calling video telephone terminal. It provides a video telephone service providing system through the interworking of an instant messenger system and a video telephone terminal, characterized in that it comprises a video telephone interworking server for performing a video telephone call.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when a detailed description of a related well-known configuration or function is apparent to those skilled in the art, or it is determined that the subject matter of the present invention may be obscured, the detailed description thereof will be omitted.

1 is a block diagram schematically illustrating a system for providing a video telephone service through interworking of an instant messenger system and a video telephone terminal according to a preferred embodiment of the present invention.

As shown in FIG. 1, a video telephone service providing system according to a preferred embodiment of the present invention includes a mobile video telephone terminal 100, a wired video telephone terminal 110, a mobile video telephone network 120, and a wired video telephone network 130. ), The video phone interworking server 140, the instant messenger server 150, the Internet 160, the user terminal 170, and the subscriber information database 180.

The mobile / wired video telephone terminals 100 and 110 are communication terminals capable of voice and video calls through the mobile video telephone network 120 or the wired video telephone network 130. To this end, the mobile / wired video telephone terminals 100 and 110 according to the preferred embodiment of the present invention are H.263 video codec, G.723 audio codec, H.223 multiplexing protocol, H. .245 support control protocols, etc .;

H.263 is a recommendation for compressing video data at very low bit rate. It is based on H.263, an existing recommendation.It is based on H.263. Hybrid) compression method is adopted. G.723 is a recommendation for compressing speech or audio signals at low bit rates, compressing audio signals frame-by-frame using linear predictive analysis / synthesis methods and compressing them to 5.3 or 6.3 kbps as needed. However, the video codec and the audio codec used in the terminal are not limited thereto. For example, MPEG-4 or H.263 is added as a video codec, and AMR, G.711, G.729, G723.1, etc. are added as an audio codec. It can be included as.

H.223 is a packet-based multiplexing protocol for low-rate multimedia communications that provides a method of decomposing or combining video and audio data into multiple logical channels within a single packet with low latency and overhead.

H.245 is a protocol that defines the meaning and rules for the procedures and various terminal information messages necessary for starting or communicating between mobile / wired video telephone terminals 100, 110. H.245 is a symmetrical control protocol that, when initiating H.245 communication between terminals, determines which subscriber is the master, ie the right to provide a solution in the event of a collision. Set the standard to This feature, called "Master-Slave Determination", is used at the beginning of the session to identify the Master and Slave.

H.245 also provides Capability Exchange. Each terminal has different features, such as video and voice codecs, data sharing and other optional features, based on the multiplexing and splitting capabilities of H.223. H.245 therefore provides a function exchange function to negotiate these functions and to distinguish features common to both terminals.

In addition, media and data flows are configured on logical channels to support control over those flows. H.245 provides logical channel signal processing for logical channel open / close functions and parameter exchange operations.

The mobile video telephone network 120 includes a base station transmitter (not shown), a base station controller (not shown), a mobile switching center (MSC: mobile switching center, not shown), and a home location register (HLR) that accommodates a 3GPP standard wireless access standard. Home Location Register (not shown), Visitor Location Register (VLR), Short Message Service Center (SMS Center), not called "SMS Center" Configure.

In addition, the mobile video telephone network 120 is a terrestrial infrastructure that serves to ensure the mobility of the mobile / wired video telephone terminals 100 and 110, and performs handoff and wireless support management functions. The mobile video telephone network 120 supports both synchronous and asynchronous. Here, in the case of synchronous, the base station transmitter will be a base transceiver station (BTS), the base station controller will be a base station controller (BSC). Controller). Of course, the mobile video telephone network 120 according to a preferred embodiment of the present invention is not limited thereto, and may include a GSM network other than a CDMA network and an access network of a fourth generation portable Internet system to be implemented in the future.

The SMS center of the mobile video telephone network 120 may transmit the video call request message in the form of a short message to the incoming video telephone terminal.

The base station transmitter performs a wireless connection termination function between the video telephone terminals 100 and 110, and performs a function of transmitting and receiving image data such as voice and video by the WCDMA method, and directly interworks with the terminal. to be.

The base station controller controls the base station transmitter, and allocates and releases radio channels for the terminal, controls transmission output of the terminal and the base station transmitter, determines soft handoff and hard handoff between cells, and transcodes. And perform vocoding, global positioning system (GPS) clock distribution, operation and maintenance of the base station transmitter, and the like.

The mobile switching center performs basic and additional service processing, incoming and outgoing call processing of subscribers, location registration and handoff procedures, and interworking with other networks. The mobile switching center of the IS-95 A / B / C system has an Access Switching Subsystem (ASS) that performs distributed call processing, an Interconnection Network Subsystem (INS) that performs centralized call processing, and centralization of operation and maintenance. It includes a subsystem such as a Central Control Subsystem (CCS) in charge of, a Location Registration Subsystem (LRS) for storing and managing information about mobile subscribers.

The home location register receives the location information of the terminal from the visitor location register and performs functions such as registration recognition, registration deletion, and location check. The home location register also stores profile information of the mobile / wired video telephone terminals 100 and 110. Here, the profile information refers to a mobile identification number (MIN), an electronic serial number (ESN) and / or subscribed mobile communication service information of the mobile / wired video telephone terminals 100 and 110.

The visitor location register receives and stores the location information of the visiting subscriber where the location registration is performed and the subscriber data from the mobile communication switching center in the case of incoming and outgoing calls of the wireless terminal.

An SMS center is a node having a unique signaling point code (SPC) in a signaling system 7 (SS7) network. The SMS center is connected to a mobile switching center to determine the location of a receiver and to establish a public land mobile network (PLMN) (not shown). It has the function of delivering a short message to mobile subscribers.

The wired video telephone network 130 includes a private automatic branch exchange (PABX) and a public switched telephone network (PSTN), and includes a gateway mobile communication exchange (GMSC). : Connected to the mobile video telephone network 120 through a Gateway Mobile Services Switching Center (not shown).

The video phone interworking server 140 converts and generates an instant messenger program received from the instant messenger server 150 for a mobile video telephone terminal and a wired video telephone terminal, respectively, and generates a mobile video telephone network 120 and a wired video telephone network ( 130).

In addition, the video phone interworking server 140 requests a video call including transmission subscriber information from a video phone terminal (ie, any one of the user terminal 170, the mobile video phone terminal 100, and the wired video phone terminal 110). Receive a message and query the sending subscriber information (Electronic Serial Number (ESN), e-mail address, etc. of the video telephone terminal) for data matching the stored subscriber information stored in the subscriber information database 180 as a query. After the determination, if there is the matching subscriber information as a result of the determination, the corresponding video telephone network (Internet 160, mobile image) according to whether it is the user terminal 170, the mobile video telephone terminal 100, or the wired video telephone terminal 110. Each of the telephone network 120 and the wired video telephone network 130) transmits a video call request message.

In addition, the video phone interworking server 140 receives the video call response message from the incoming video phone terminal receiving the video call request message and transmits the video call request message to the calling video phone terminal which has transmitted the video call request message. Make a video phone call between telephone terminals.

Here, the outgoing video telephone terminal or the incoming video telephone terminal refers to any one device of the user terminal 170, the mobile video telephone terminal 100, and the wired video telephone terminal 110.

In addition, the data transmitted and received between the calling video telephone terminal and the incoming video telephone terminal can be reproduced in real time without limitation such as voice, video, still image, text, and the like.

The instant messenger server 150 functions to provide an instant messenger service to the user terminal 170 and the mobile / wired video telephone terminals 100 and 110 in association with the video phone interworking server 140 and the Internet 160.

The instant messenger server 150 operates a wired / wireless website to process a subscription application for an instant messenger service. Wired websites include a number of web pages created based on HTML, and wireless websites include a number of web pages created based on the Wireless Markup Language (WML).

Meanwhile, the instant messenger server 150 may enable connected terminals to chat, send and receive files, send a message, and send various emails (text mail, voice mail, video mail, etc.) using the instant messenger. In the present invention, the instant messenger program transmitted from the instant messenger server 150 and installed in the user terminal 170 and the mobile / wired video telephone terminals 100 and 110 is a voice call service and a video call service supportable program.

The internet 160 is a communication network that provides a connection path for the user terminal 170 to access the instant messenger server 150 and transmit and receive data. The Internet 160 includes various services existing in the TCP / IP protocol and higher layers, namely, HTTP ( Provides HyperText Transfer Protocol (FTP), File Transfer Protocol (FTP), Domain Name System (DNS), Simple Mail Transfer Protocol (SMTP), Simple Network Management Protocol (SNMP), Network File Service (NFS), and Network Information Service (NIS) It means a global open computer network architecture.

The user terminal 170 collectively refers to a personal digital assistant, a personal computer system (PC), etc. having an information processing function through wired / wireless communication and data input / output, and is connected to the Internet 160 via a computer and / or directly. Any device may be used as long as the terminal is connected and performs a call and is a terminal capable of transmitting and receiving wireless data with the instant messenger server 150 through the Internet 160.

The subscriber information database 180 stores service subscriber information, a terminal unique number of the service subscriber terminal, an e-mail address, and the like when a user subscribes to a video telephone service. The subscriber information database 180 refers to a general data structure implemented in a storage system (hard disk or memory) of a computer system by using a database management program (DBMS), and retrieves (extracts), deletes, edits, and adds data. It means a data storage type that can freely perform. These databases are relational database management systems (RDBMS) such as Oracle, Infomix, Sybase, DB2, or object-oriented databases such as Gemston, Orion, O2, etc. It can be implemented for the purpose of the present invention using an XML native database such as management system (OODBMS) and Excelon, Tamino, Sekaiju, etc., and achieves its own functions. It has the appropriate fields or elements to do so.

2 is a block diagram showing an internal configuration of a video telephone interworking server according to a preferred embodiment of the present invention.

As shown in FIG. 2, the video phone interworking server 140 includes a receiver 200, an inquiry unit 210, a controller 220, a content converter 230, a transmitter 240, and the like. .

The receiver 200 may be configured to provide subscriber information and terminal information through a video telephone network (any one of the Internet 160 and mobile / wired video telephone networks 120 and 130) between an outgoing video telephone terminal and an incoming video telephone terminal to use a video telephone service. And receiving a variety of information necessary to perform a video call service including image information.

The inquiry unit 210 interoperates with the subscriber information database 180 using the information of the outgoing video telephone terminal (the terminal unique number of the incoming video telephone terminal, the e-mail address, etc.) received from the receiver 200 to the incoming video telephone terminal. Performs a function to query the corresponding subscriber information. Here, the information of the called video telephone terminal may be a terminal unique number of the called video telephone terminal.

Here, the outgoing video telephone terminal or the incoming video telephone terminal is any one of a personal digital assistant, a personal computer system (PC), a user terminal 170, a mobile video telephone terminal 100, and a wired video telephone terminal 110. it means.

The controller 220 processes the data transmitted and received between the receiver 200, the transmitter 240, the inquiry unit 210, and the content converter 230 to provide a video telephone service. Control overall operation.

The content conversion unit 230 transmits the video call request message transmitted from the calling video telephone terminal to the type of the incoming video telephone terminal (mobile video telephone terminal 100, wired video telephone terminal 110, user terminal 170, etc.). Therefore, a function suitable for the corresponding terminal, that is, a function that can be converted into a form that can be output from the incoming video telephone terminal is performed.

In addition, the content conversion unit 230 transmits a video call response message, which is a response signal to the video call request message, to the type of the calling video telephone terminal (mobile video telephone terminal 100, wired video telephone terminal 110, user terminal ( 170), etc.) to convert it into a form suitable for the corresponding terminal, that is, a form that can be output from the calling video telephone terminal.

In addition, the content conversion unit 230 receives the instant messenger program from the instant messenger server 150 and performs a function of converting and generating the mobile messenger terminal and the wired video telephone terminal to meet the specifications of each terminal.

The transmission unit 240 converts the video call request message or the video call response message converted / generated by the content converter 230 into one of the video telephone network (mobile video telephone network 120, wired video telephone network 130, and the Internet 160). And transmits to the calling / incoming video telephone terminal (any one of the mobile video telephone terminal 100, the wired video telephone terminal 110, and the user terminal 170).

3 is a flowchart illustrating a video telephone service providing method through interworking of an instant messenger system and a video telephone terminal.

Before describing FIG. 3, the mobile video phone terminal 100, the wired video phone terminal 110, the user terminal 170, and the like, which use a video phone service, use an instant messenger program capable of performing a video phone call. It is assumed that it is downloaded from the video telephone interworking server 140 and installed.

Upon joining the video telephone service, an instant messenger program is installed in the mobile video telephone terminal 100, the wired video telephone terminal 110, and the user terminal 170, and the installed instant messenger program includes information of an incoming video telephone terminal to make a video call. It is saved through friend registration. Here, the instant messenger programs installed in the mobile / wired video telephone terminals 100 and 110 and the user terminal 170 may have different configurations and functions according to the type or specification of each terminal.

The current instant messenger service displays the list of users registered as friends and their current status in various icons or texts, checking on / off status, name or screen name, avatar, psychological status, current status, access status, etc. This can be referred to as a form of service using the presence information. Here, the mental state includes various states such as joy, sadness, anger, crying, and the like.

In the embodiment of the present invention, for convenience of explanation, a video call service between friends registered by an instant messenger program is illustrated, but the present invention is not limited thereto, and a video telephony service program is embedded in the video phone terminal. It would also be possible to make a video phone call between an outgoing video phone and an incoming video phone in a manner different from the instant messenger program.

For convenience of description in FIG. 3, assuming that the user terminal (personal computer) 170 is a calling video telephone terminal, the video call between the user terminal 170 and the mobile / wired video telephone terminals 100 and 110, which are called video telephone terminals, are used. We will focus on how to provide services. Therefore, the principle is the same when the mobile video telephone terminal 100 and the wired video telephone terminal 110 are outgoing video telephone terminals.

The outgoing video telephone terminal or the incoming video telephone terminal may be any one of a user terminal 170 such as a personal digital assistant, a personal computer system (PC), a mobile video telephone terminal 100, and a wired video telephone terminal 110. It is a terminal.

The user terminal 170 equipped with an instant messenger capable of a video call function receives a terminal selection signal, generates a video call request message including subscriber information selected by the user, and then generates a video call request message on the Internet. The video phone interworking server 140 is transmitted through the 160 (S300). In this case, the video call request message includes an electronic serial number (ESN), an e-mail address, information on when to log on to the instant messenger, and registration information registered on the instant messenger (e.g., an instant messenger). Information about which logged-on user is registered as a group of friends, family, co-workers, etc.), the current location of the user who is logged on to Instant Messenger, and more. Configure.

Receiving the video call request message, the video call interworking server 140 includes a subscriber information database that associates subscriber information (terminal number, e-mail address, etc.) for the incoming video call terminal included in the video call request message with a query word ( 180, it is determined whether there is video telephone terminal information (mobile video telephone terminal 100 or wired video telephone terminal 110) matching the subscriber information (S302).

If it is determined in step S302 that there is video telephone terminal information matching the subscriber information, the content conversion unit 230 of the video telephone interworking server 140 transmits the requested video telephone request message to the mobile video telephone terminal 100 or the wired image. Converted into a displayable form in the telephone terminal 110 and transmitted to the incoming video telephone terminal through the transmission unit (240) (S304, S306), based on the video telephone terminal information in the case of the mobile video telephone terminal 100, The video telephone network 120, in the case of the wired video telephone terminal 110 transmits a video call request message to the wired video telephone network 130. Here, the video call request message is transmitted to the mobile / wired video telephone terminals 100 and 110 in a text or voice message format.

Receiving the video request message, the incoming video telephone terminal (mobile / wired video telephone terminals 100 and 110) generates a video call response message for the video call request message and sends the video through the mobile / wired video telephone network 120 or 130. The phone interworking server 140 transmits (S308). Subsequently, the video phone interworking server 140 converts the video call response message into a form that can be displayed on the user terminal 170, and the user terminal via the instant messenger server 150 and the Internet 160 through the transmitter 240. 170) (S310, S312). As a result, a video call is made between the user terminal 170 and the mobile video telephone terminal 100 or the wired video telephone terminal 110.

If it is determined in step S302 that there is no video telephone terminal information matching the subscriber information, the video telephone interworking server 140 transmits a video telephone call failure message to the calling video telephone terminal (S314).

The above description is merely illustrative of the present invention, and those skilled in the art to which the present invention pertains may various modifications without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed herein are not intended to limit the present invention but to describe the present invention, and the spirit and scope of the present invention are not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all the technologies within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, if a video telephone service is introduced between a personal computer installed with an instant messenger and a mobile / wired video telephone terminal, video phone service activation and wireless data sales can be greatly increased.

The present invention uses video telephony beyond the concept of a mobile communication terminal and a mobile communication terminal and introduces a video telephone service between a PC and a mobile / wired terminal to send a document or a drawing or a meeting in addition to the purpose of making a face-to-face call. There is an effect that can use the video telephone service for a variety of purposes.

Claims (9)

An instant messenger server providing an instant messenger service, an outgoing / incoming video telephone terminal for transmitting and receiving video telephone calls, and an intermediate medium for transmitting and receiving video signals to implement a video telephone service between the outgoing video telephone terminal and the incoming video telephone terminal. In a system comprising a telephone network, the video telephone call is connected between the outgoing video telephone terminal and the incoming video telephone terminal, and a video telephone interworking server for providing the video telephone service. In the method for providing mutual video call service, (a) receiving a video call request message including transmission subscriber information from the calling video telephone terminal through a video telephone network; (b) extracting the transmitting subscriber information included in the video call request message and searching the subscriber information database using the extracted transmitting subscriber information as a query to determine whether there is matching stored subscriber information; (c) when it is determined in step (b) that the stored subscriber information corresponding to the transmission subscriber information is retrieved from the subscriber information database, the video call request message is sent to the incoming video telephone terminal corresponding to the transmission subscriber information. Transmitting to; And (d) receiving a video call response message from the incoming video telephone terminal and transmitting the video call response message to the calling video telephone terminal through the video telephone network to perform the video telephone call between the calling video telephone terminal and the incoming video telephone terminal. Method of providing a video telephone service through the interworking of an instant messenger system and a video telephone terminal, characterized in that it comprises a. The method of claim 1, The outgoing video telephone terminal or the incoming video telephone terminal is any one of a personal digital assistant, a personal computer system (PC), a mobile video telephone terminal, and a wired video telephone terminal. To provide video telephony services. The method of claim 1, And the video telephone network is any one of a mobile video telephone network, a wired video telephone network, and an internet network. The method of claim 1, wherein the method is (e) If it is determined in step (b) that the stored subscriber information corresponding to the transmission subscriber information is not retrieved from the subscriber information database, the video call interworking server generates a video call failure message to generate the outgoing video. And providing a video call service through interworking the instant messenger system and the video phone terminal. An instant messenger server providing an instant messenger service, an outgoing / incoming video telephone terminal for transmitting and receiving video telephone calls, and an intermediate medium for transmitting and receiving video signals to implement a video telephone service between the outgoing video telephone terminal and the incoming video telephone terminal. In a system comprising a telephone network, by providing a video call service to each other by connecting a video phone terminal and an instant messenger system, Receiving a video call request message including transmission subscriber information from the calling video telephone terminal, searching the subscriber information database using the transmission subscriber information as a query to determine whether there is a matching stored subscriber information, and determining that there is matching data. Transmitting the video call request message to the called video phone terminal corresponding to the transmitting subscriber information, receiving a video call response message from the called video phone terminal as a response message, and transmitting the video call response message to the calling video telephone terminal, thereby transmitting the video call request message; A video telephone interworking server that performs the video telephone call between a telephone terminal and the called video telephone terminal. System for providing video telephony services through interworking of an instant messenger system and a video telephone terminal, characterized in that it comprises a. The method of claim 5, wherein the video telephony interworking server, Providing the video call service through the interworking of the instant messenger system and the video phone terminal, wherein the video call request message is converted into a form that can be output from the terminal according to the calling video phone terminal or the called video phone terminal. system. The method according to claim 5 or 6, The outgoing video telephone terminal or the incoming video telephone terminal is any one of a personal digital assistant, a personal computer system (PC), a mobile video telephone terminal, and a wired video telephone terminal. Video telephony service providing system. The method of claim 5, wherein the video telephony interworking server, The instant messenger program received from the instant messenger server converts, generates, and transmits the instant messenger program according to a system specification of the incoming video telephone terminal. Telephone service delivery system. The method of claim 8, Interworking between the instant messenger system and the video telephone terminal, wherein the video telephone service is provided between the calling / incoming video telephone terminal and the called / incoming video telephone terminal registered by the instant messenger program. Video telephony service providing system.

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