KR100940447B1 - System and method offering free image communication service for interconnectiong between systems based on dynamic IP address - Google Patents

Abstract

The present invention includes a first video terminal for transmitting video data for a video call and storing an assigned ID and a dynamic IP address; A first gateway transferring image data transmitted from the video terminal to an internet network; A second gateway receiving image data transmitted through the Internet network and delivering ID and dynamic IP address information of the first video terminal transmitted from the first gateway through a PSTN network; A second video terminal configured to output video data received through the second gateway and to store the ID and IP address of the first video terminal; A system for providing a free video call service between a system based on a dynamic IP address including an ISP server for assigning a dynamic IP address to the first and second video terminals.

Home Network, Home Gateway, Dynamic IP, Video Call

Description

System and method offering free image communication service for interconnection between systems based on dynamic IP address}

The present invention provides a video phone for home network, WallPad, Based on the dynamic IP address, the generations of home networks using IDs pre-registered in video terminal devices such as WebPad, interphone, electronic photo frame and IPTV PC can use free video call service regardless of region, distance and location. The present invention relates to a system and a method for providing a free video call service between systems.

Every network device connected to the Internet has its own unique TCP / IP address. Using this IP address, it is possible to access the network device from the outside network and use the Internet service.

IP addresses required to access such Internet networks are classified into static and dynamic IP addresses according to the type of access to an Internet Service Provider (ISP).

That is, when connected through a dedicated line, the client is always given a fixed IP, and can be easily connected from the outside through the fixed IP. However, when connected using commonly used dynamic IPs (ADSL, PSTN, PPP, etc.), since the new IP is given when the connection is made, the dynamic IP is not known, and therefore cannot be accessed from the outside.

 Therefore, in a home network constructed based on a static IP address, the mutual IP address can be known in advance, and each other can be easily connected to each other if security access is allowed.

However, it is not economically or practically feasible for a general user to use a fixed IP to construct a home network and use a video call because it is expensive.

In a home network system built on a dynamic IP address, it is not easy to interconnect each other without a specific service server that can match the information on the changed IP because the IPs cannot be known.

1 is a diagram illustrating a home network system constructed based on a conventional dynamic IP address.

Referring to FIG. 1, a conventional network system receives a dynamic IP address from an ISP server A 10 at a terminal A 11, and stores an ID and a dynamic IP address of the terminal A 11 in the service server 30. If a client 21 having a dynamic IP address is given a dynamic IP address from another ISP server B 20 and wants to connect to the other terminal A 11, the other terminal is connected to the service server 30. Requests the changed dynamic IP address information of the A (11), and the client 21 is connected to the other terminal A (11) using the dynamic IP address information of the terminal A (11) received from the service server 30 A complicated process is required.

In such a conventional network structure, a service server connecting between terminals having a dynamic IP is required to exist separately, and an expensive database construction cost for processing a plurality of users is required to install a service server. This is an economically and practically impossible way to access Internet services between a small number of users and not a majority.

In order to solve the above problems, the present invention provides a free video call using a PSTN network simply by using a PSTN network through a synchronization operation without a specific server in a home network system built on the basis of such a dynamic IP address. An object of the present invention is to provide a system and method for providing a free video call service between dynamic IP address-based systems for making a service available.

The present invention for achieving the above object, the first video terminal for transmitting the video data for the video call, and stores the given ID and dynamic IP address; A first gateway transferring image data transmitted from the first video terminal to an internet network, and transmitting an ID and a dynamic IP address assigned to the first video terminal through a PSTN network; A second gateway that receives image data transmitted through the Internet network and ID and dynamic IP address information of the first video terminal transmitted from the first gateway through a PSTN network, and transmits the same to the second video terminal; Receives and outputs the image data received through the second gateway, stores the ID and IP address of the first video terminal transmitted through the second gateway, and can directly register the ID and IP address through the GUI A second video terminal; And an ISP server for assigning a dynamic IP address to the first and second video terminals, wherein the first gateway, the first video terminal, and the second gateway and the second video terminal perform the same function with each other. To provide a free video call service between the dynamic IP address-based system.

Preferably, when the first video terminal is in operation, the first gateway middleware for a home network transmits dynamic IP address information of the first video terminal to a registered user group through a PSTN network, and receives image data. The second gateway middleware located at the side may transmit ID and IP address information of the first video terminal transmitted from the first gateway through a PSTN network to the second video terminal.

In addition, when the IP address of the first video terminal is changed, the first gateway middleware may update the IP address information by transmitting the changed IP address information of the first video terminal to a registered user group through a PSTN network. have.

In addition, the present invention comprises the steps of registering the IP address of the second video terminal to the first video terminal through the PSTN network; Checking whether an IP address assigned to the first gateway has been changed in a first gateway middleware for a home network connected to the first video terminal; Periodically checking whether the IP address assigned to the first gateway is changed by the first gateway middleware; When the IP address of the first gateway is changed, updating data of the first gateway is transmitted through a PSTN network to an ID of the second video terminal stored in the first video terminal connected to the first gateway. step; And updating and storing the update data of the first gateway, which is transmitted from the second gateway, to provide a free video call service between systems based on a dynamic IP address.

Preferably, registering the IP address of the second video terminal to the first video terminal may receive and register counterpart IP address information using a PSTN network.

The registering of the IP address of the second video terminal to the first video terminal may include registering the IP address information of the second video terminal by using a GUI of the first video terminal. You can register IP address information directly.

In addition, the update data may include a change flag value, an ID (telephone number), a changed IP address, and an existing registration flag value of the first gateway.

In addition, the present invention comprises the steps of checking the connection state with the gateway group previously registered in the booting process after the power-on at the first gateway; If there is no response from the second gateway, transmitting a DTMF signal requesting the changed IP address information to the second gateway through a PSTN network; Confirming IP address information currently assigned from the second gateway; Transmitting its current IP address from the second gateway to the first gateway in a DTMF signal; Changing and storing, at the first gateway, IP address information of the changed second gateway transmitted from the second gateway to an existing stored data area; Transmitting address information including its own IP to a second gateway through an internet network by using the IP address information of the second gateway stored in the first gateway; And registering the address information including the IP of the first gateway received from the first gateway in a second video terminal.

Preferably, transmitting the DTMF signal for requesting the changed IP address information through the PSTN network to the second gateway transmits a specific DTMF signal in the ARS of the first gateway according to the announcement output from the second gateway. Requesting current IP information of the second gateway.

In addition, the present invention comprises the steps of transmitting a video call service request signal using the IP address information registered in advance from the first video terminal to the second video terminal; Generating a request event to allow a user to determine reception of a request signal at a second video terminal receiving the video call service request signal; And receiving a video call service from a user at the second video terminal, and connecting the first video terminal with an internet network to provide a video call service. Provides a video call service providing method.

As described above, the present invention can provide a video call service free of charge without additional costs after a predetermined registration process between generations of a home network based on dynamic IP, without regional and spatial restrictions.

This economic effect can serve as a facilitator in the home network industry that targets the existing generation (base) rather than new construction. One business model can be provided.

In order to fully understand the present invention, the advantages of the operability of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings, which illustrate preferred embodiments of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

2 is a diagram showing a system for providing a free video call service between dynamic IP address based systems according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the present invention includes a video terminal and a gateway for a video call in a home in a home network system built on an internet network.

In more detail, a first video terminal 100 for transmitting video data for a video call and storing an assigned ID and a dynamic IP address, and a first video terminal for transmitting video data transmitted from the video terminal 100 to the Internet network. A gateway 110 receives image data transmitted through the Internet network, and transmits ID and dynamic IP address information of the first video terminal 100 transmitted from the first gateway 110 through a PSTN network. A second video terminal 130 that outputs image data received through the second gateway 120 and the second gateway 120 and stores the ID and IP address of the first video terminal 100 transmitted; ISP server 140 for providing a dynamic IP address to the first and second video terminals (100, 130).

Looking at the operation process of the free video call service providing system, if a home network based on a dynamic IP address is established, and the first video terminal 100 is in operation, the first gateway 110 middleware for the home network is currently Dynamic IP address information of the video terminal 100 is transmitted to the registered user group through the PSTN network, and in the second gateway 120 middleware located at the receiving side of the image data, the first gateway 110 is transmitted from the first gateway 110 through the PSTN network. The transmitted ID and IP address information of the first video terminal 100 is transmitted to the second video terminal 130. Then, when the IP address of the first video terminal 100 is changed, the first gateway 110 middleware transmits the changed IP address information of the first video terminal 100 to the registered user group through the PSTN network. To update the IP address information.

Through this process, the mutually registered video terminals can always be connected through the IP address synchronization operation, and users can use the free video call service only with the call button with the other party who wants to use the video call.

That is, the present invention does not require a service server that stores information on a dynamic IP address, and provides a free video call service regardless of a fixed IP or a dynamic IP allocated from an external Internet service provider (ISP).

3 is a flowchart illustrating a process of synchronizing IP information in a method for providing a free video call service between dynamic IP address based systems according to an exemplary embodiment of the present invention.

Referring to FIG. 3, a method of automatically registering counterpart IP address information by using a predetermined registration procedure (eg, a PSTN network) or a counterpart IP information using a GUI on a terminal. Direct registration via a method such as direct registration) to connect a network (S100). Thereafter, the first gateway 110 for the home network checks whether its IP address has been changed (S110). The first gateway 110 periodically checks whether the IP address is changed in the middleware (S120), and when the IP address is changed, it is stored in the first video terminal 100 connected with the first gateway 110. It is a video call group including the second video terminal 130 which is configured as a flag value ("1"), an ID (line telephone number), a changed IP address, an existing flag or not flag of the first gateway 110. (Flag) The data to be updated, such as a value "1", is transmitted (S130). The second gateway 120 of the video call group distinguishes the transmitted update data by the ID and updates the corresponding information to always synchronize the IP information between the groups (S140).

If there is no change in the IP address at step S120, the process returns to step S110 to check whether the IP address is changed.

If the power of the first gateway 110 is turned off in a situation where the first gateway 110 and the second gateway 120 are connected, the dynamic IP of the second gateway 120 is changed to the first gateway. When the IP information synchronization operation with the 110 is not performed, the first gateway 110 and the second gateway 120 may be disconnected from each other. In order to solve this problem, both gateways check the connection status with the previously registered group during the booting process after power-on, and if there is no response from the other gateway in this process, the connection is regarded as disconnected. And re-enrollment process.

4 is a flowchart illustrating a re-registration process in a method of providing a free video call service between dynamic IP address based systems according to an exemplary embodiment of the present invention.

Referring to FIG. 4, when the power-off first gateway 110 is turned on, IP address information is checked for a previously registered gateway group during a booting process. The re-registration process is performed (S200). More specifically, when the IP address information of the second gateway 120 can be confirmed, the IP address information of the other second gateway 120 can be checked, and if the IP address information of the second gateway 120 cannot be verified, The first gateway 110 makes an ARS call to the second gateway 120 with no answer using the trunk line number (S210). In this process, the situation may be divided into two cases in which the user or the system receives the ARS signal (S220).

First, when the first gateway 110 makes an ARS call to the second video terminal 130, a person receives a call received from the other party. In this case, the registration process is performed by the user pressing the 'register' button by the ARS message output through the second video terminal 130 (S230).

For example, an ARS message, “The existing IP information has been changed. Please hang up the phone and press the registration button on the video terminal” from the first gateway 110 is output through the second video terminal 130. When the user hangs up, the user presses a 'register' button on the second video terminal 130 to update IP information between systems.

Secondly, when an ARS call is made from the first gateway 110 to the second video terminal 130, the second gateway 120 may receive a call. In this case, the ARS message is output from the second gateway 120 to the first gateway 110 (S240).

Since the second gateway 120 is an ARS associated with the home network system, an ARS message for the home network is output. While such a comment appears, the ARS of the first gateway 110 sends a specific DTMF signal '*' to request current IP information of the second gateway 120 (S250).

If the second gateway 120 receives a specific DTMF signal such as a 'register' button or a '*' in step S250 in step S230, the second gateway 120 recognizes that it is an IP information re-registration request and is currently connected to a second gateway ( The dynamic IP address information of 120 is checked (S260). When confirming the IP address information, the second gateway 120 transmits its IP address to the first gateway 110 in a DTMF signal (S270). The first gateway 110 changes and stores IP address information of the changed second gateway 120 transmitted from the second gateway 120 in an existing stored data area (S280). Using the stored IP address information, the first gateway 110 is configured as a second gateway 120 in a format of "change flag, ID (line number), changed IP address information, existing registration flag" format. The data is transmitted (S290). The second video terminal 130 registers ID and address information of the first gateway 110 transmitted from the first gateway 110 (S300).

The above process is the same in all systems when the IP information synchronization fails after changing the IP information in a specific system, so even if the power is turned off in a specific system, the system was automatically reconnected and registered upon reboot Do not disconnect from the liver.

5 is a flowchart illustrating a method of providing a free video call service between dynamic IP address-based systems according to an exemplary embodiment of the present invention.

Referring to FIG. 5, the video call service request signal is transmitted from the first video terminal 100 using the pre-registered IP address information for the second video terminal 130 (S400). The second video terminal 130 receiving the video call service request signal generates a request event to allow the user to determine the reception of the request signal (S410). When the user of the second video terminal 130 approves the video call service (S420), the video call service is provided (S430), and if it is not approved, the connection failure message is output (S440).

Since the IP address is always synchronized between the first gateway 110 and the second gate, when using the video call service, there is no need to request IP information from a specific server that stores the IP information. Just like using a telephone, you can easily provide a video call service even on a dynamic IP basis by selecting the other party's name and pressing the call button.

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

1 is a diagram illustrating a home network system constructed based on a conventional dynamic IP address.

2 is a diagram showing a system for providing a free video call service between dynamic IP address based systems according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a process of synchronizing IP information in a method for providing a free video call service between dynamic IP address based systems according to an exemplary embodiment of the present invention.

4 is a flowchart illustrating a re-registration process in a method for providing a free video call service between dynamic IP address based systems according to an exemplary embodiment of the present invention.

5 is a flowchart illustrating a method of providing a free video call service between dynamic IP address based systems according to an exemplary embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: first video terminal 110: first gateway

120: second gateway 130: second video terminal

140: ISP server

Claims (10)

A first video terminal for transmitting video data for a video call and storing an assigned ID and a dynamic IP address; A first gateway transferring image data transmitted from the first video terminal to an internet network, and transmitting an ID and a dynamic IP address assigned to the first video terminal through a PSTN network; A second gateway that receives image data transmitted through the Internet network and ID and dynamic IP address information of the first video terminal transmitted from the first gateway through a PSTN network, and transmits the same to the second video terminal; Receives and outputs the image data received through the second gateway, stores the ID and IP address of the first video terminal transmitted through the second gateway, and can directly register the ID and IP address through the GUI A second video terminal; And an ISP server for assigning a dynamic IP address to the first and second video terminals, wherein the first gateway, the first video terminal, and the second gateway and the second video terminal perform the same function with each other. A system for providing free video call service between dynamic IP address based systems. The method of claim 1, When the first video terminal is in operation, the first gateway middleware for a home network transmits dynamic IP address information of the first video terminal to a registered user group through a PSTN network. The second gateway middleware located at the receiving side of the image data transmits the ID and IP address information of the first video terminal transmitted from the first gateway through the PSTN network to the second video terminal. Free video call service system between. The method of claim 1, When the IP address of the first video terminal is changed, the first gateway middleware transmits the changed IP address information of the first video terminal to the registered user group through the PSTN network to update the IP address information. Free video call service between two systems. Registering an IP address of the second video terminal with the first video terminal through the PSTN network; Checking whether an IP address assigned to the first gateway has been changed in a first gateway middleware for a home network connected to the first video terminal; Periodically checking whether the IP address assigned to the first gateway is changed by the first gateway middleware; When the IP address of the first gateway is changed, updating data of the first gateway is transmitted through a PSTN network to an ID of the second video terminal stored in the first video terminal connected to the first gateway. step; And And updating and storing the update data of the first gateway received from the second gateway. The method of claim 4, wherein Registering the IP address of the second video terminal to the first video terminal is a method of providing a free video call service between the dynamic IP address-based system that receives and registers the other party's IP address information using a PSTN network. The method of claim 4, wherein The registering of the IP address of the second video terminal in the first video terminal may include the IP address of the second video terminal using the GUI of the first video terminal when the IP address information of the second video terminal is known in advance. Free video call service between dynamic IP address-based systems that directly register information. The method of claim 4, wherein The update data is a free video call between a dynamic IP address based system including a flag value of change of the first gateway, an ID (telephone number), a changed IP address and a flag value of existing registration (Flag). How we deliver the service. Checking a connection state with a previously registered gateway group in a booting process after powering on the first gateway; If there is no response from the second gateway, transmitting a DTMF signal requesting the changed IP address information to the second gateway through a PSTN network; Confirming IP address information currently assigned from the second gateway; Transmitting its current IP address from the second gateway to the first gateway in a DTMF signal; Changing and storing, at the first gateway, IP address information of the changed second gateway transmitted from the second gateway to an existing stored data area; Transmitting address information including its own IP to a second gateway through an internet network by using the IP address information of the second gateway stored in the first gateway; And And registering address information including the IP of the first gateway received from the first gateway in a second video terminal. The method of claim 8, Transmitting a DTMF signal requesting changed IP address information to the second gateway through a PSTN network; A method of providing a free video call service between a system based on a dynamic IP address, wherein the ARS of the first gateway sends a specific DTMF signal and requests current IP information of the second gateway according to the announcement output from the second gateway. . delete

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