KR20050043597A - Method of visitor confirming and communication service using internet - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a home visitor identification service method using the Internet.

2. The technical problem to be solved by the invention

According to the present invention, a user installs a SIP UA module in a terminal and a video door phone to which a user wants to receive a home visitor confirmation service, and the visitor identification terminal registers a current location and a SIP address with a home gateway through the Internet anytime, anywhere. The purpose of the present invention is to provide a home visitor verification service method for receiving a video door phone doorbell press at a current location through a home gateway, so that a user can check an image of a home visitor.

3. Summary of the solution of the invention

The present invention provides a visitor verification service method using an internet protocol (IP) -based home network, and has a SIP proxy server and a SIP register (register) function at a home gateway and a video door phone and a visitor identification terminal. An address registration step of registering a current location and an access address of the visitor identification terminal with a SIP user agent (UA) module; An address confirmation and session connection request step of, when the bell press event is generated from the video door phone, the home gateway checking a user's access address and requesting a session connection to the visitor verification terminal of the corresponding access address; Establishing, by the home gateway, a session between the video door phone and the visitor checking terminal according to the session connection response from the visitor checking terminal; An image transmission step of transmitting, by the home gateway, the visitor image transmitted from the video door phone to the visitor identification terminal through the formed session; And a session release step of the home gateway releasing the formed session according to the session release request from the visitor confirmation terminal.

4. Important uses of the invention

The present invention is used in home gateways and the like.

Description

Method of Visitor Confirming and Communication Service using Internet}

The present invention relates to a home visitor identification service method using the Internet, and more particularly, a SIP (Session Initiation Protocol) SIP (UA) for a terminal (visitor identification terminal) and a video door phone that a user wants to receive home visitor identification and call service. By installing the User Agent module, the visitor confirmation terminal registers the current location and SIP address with the home gateway through the Internet anytime and anywhere, and receives the home visitor's video door phone doorbell press from the current location through the home gateway. The present invention relates to a home visitor identification service method using the Internet for making a voice call while checking a video of a home visitor.

Here, SIP (Session Initiation Protocol) is a simple text-based application layer control protocol for transmitting voice and video to the Internet based on the Internet Engineering Task Force (IETF), which establishes international Internet technology standards. Allow them to create, modify, and terminate sessions together. These sessions include teleconferences over the Internet, telephone calls, visits, event notifications, instant messaging, and the like.

SIP is independent of the underlying packet protocols (TCP, UDP, ATM, X.25), and SIP is based on a client / server architecture in which the server responds to calls when clients initiate a call. SIP follows these existing text-based Internet standards, making troubleshooting and network debugging easier. Therefore, the SIP standard technology is not a conventional H.323 technology that is a combination of several communication protocols, so that the user's PC load can be reduced and other tasks can be smoothly transmitted at the same time. In addition, since voice and video messages are directly exchanged between subscriber PCs, the same voice quality is always supported regardless of the number of subscribers, and supports the use of various Internet-based additional services easily.

Recently, the interest in the home network has increased due to the increase of the home PC, the development of communication technology, and the intelligentization of home devices, and the technology of the home gateway that can control and manage various home devices in the home network has been variously increased. Is being studied. Among them, a technology that attracts attention is that the home network is configured with an IP-based network so that the devices in the home have their respective IP addresses. It is emerging.

For example, there is a "home networking method using SIP" (Korean Patent Publication No. 2001-0036480, 2003.01.08 publication) (hereinafter referred to as "first prior art"), here SIP (SIP After registering an address that can access the devices inside the home from anywhere using), the technology for accessing and controlling the devices constituting the home network from the outside is described. That is, the present invention relates to a home network control method including a plurality of home network devices and a supervisory control device for controlling the devices inside or outside the home. However, the first prior patent only mentions that in-home controllers (ie, devices operate as SIP UA) can be used by connecting various media when making a connection between each device and the controlling devices. No specific method is disclosed for media transmission between devices essential to a home network.

Currently, the Internet network is based on the IPv4 addressing system. When the home network is configured with the same IP network, the IP address shortage is likely to occur. Therefore, considering the construction of a home network based on private IP, additional technologies such as network address translation (NAT) are required for device terminals to connect to domestic terminals in an external Internet network. .

That is, since most home networks are composed of private IP networks, additional technologies such as network address translation (NAT) are required for device terminals in order to connect to home terminals in the external Internet. Here, NAT refers to translation of an IP address in an internal network using an IP address different from that known to the external network. For example, a company maps its internal network address to one or more public IP addresses. Then, the public IP address on the incoming packets is converted back to the private IP address. By doing so, each outgoing or incoming request must go through an address translation process, which helps to ensure security issues, and also provides an opportunity to limit or authenticate the request and to match the previous request. NAT also preserves the number of public IP addresses required by the company and allows the company to use only one public IP address for communication with external networks.

On the other hand, when a visitor presses the doorbell in a general home, the door phone is installed, and when the visitor presses the door bell, a signal is sounded inside the home and the residents can view the video data of the visitor and make a voice call. Mostly. In addition, the apartment is equipped with a home automation system to add the ability to talk to the guard when you go out. However, in this existing system, the resident could not know who visited or went to work while he was out, and the visitor could not be informed of where the resident was going and how he could be contacted. . In addition, since there are many working couples and the house is empty during the day, if there is no reaction inside after pressing the door phone for the purpose of injustice, there are many cases of opening the door and making theft. In this situation, a countermeasure is required.

Although, in the "apparatus for connecting a visitor's door phone call to a mobile phone when going out" (Korean Utility Model Registration No. 2000-0013227, registered on July 19, 2000) (hereinafter referred to as "second prior art") When the outsider visits while they are out and presses the door phone, the device automatically connects to the mobile phone of the resident, so that the device can be used for business and social use. The second prior art restricts the visitor checking terminal to a mobile phone, and the user has to carry the mobile phone at all times. In addition, there is a problem that the economic cost is high because it is based on a pay phone or wireless network.

The present invention has been proposed in order to solve the above problems, by installing a SIP UA module on the terminal and the video door phone that the user wants to receive the home visitor confirmation service, the visitor confirmation terminal anytime, anywhere through the Internet home Provides home visitor identification service method to register current location and SIP address to gateway and receive home visitor's video door phone door bell press from home location through home gateway, so that user can check home visitor's image Its purpose is to.

In addition, another object of the present invention is to provide a home visitor verification service method for enabling a voice call after confirming the video of the home visitor.

In order to achieve the above object, the present invention provides a visitor verification service method using an internet protocol (IP) -based home network, comprising: a video door phone having a SIP proxy server and a SIP register function at a home gateway; An address registration step of including a SIP user agent (UA) module in the visitor identification terminal to register a current location and an access address of the visitor identification terminal; An address confirmation and session connection request step of, when the bell press event is generated from the video door phone, the home gateway checking a user's access address and requesting a session connection to the visitor verification terminal of the corresponding access address; Establishing, by the home gateway, a session between the video door phone and the visitor checking terminal according to the session connection response from the visitor checking terminal; An image transmission step of transmitting, by the home gateway, the visitor image transmitted from the video door phone to the visitor identification terminal through the formed session; And a session release step of the home gateway releasing the formed session according to the session release request from the visitor confirmation terminal.

In addition, the present invention is characterized in that through the session formed, the home gateway comprises a voice data exchange step of relaying the voice data of one side to the other side.

The present invention is to provide a visitor identification and call service to the user using the SIP in the home gateway, when the user registers the location of the terminal that the user wants to provide services anytime, anywhere, the home visitor is connected to the home gateway video When the door phone bell is pressed, the event is notified to the user so that the user can make a voice call while checking the video of the home visitor.

To this end, in the present invention, when the user goes out, when the doorbell of the front door rings, the home gateway notifies this event to the Internet terminal through which the current user can make a call through the Internet. By allowing the caller to speak with the visitor as it is, the existing visitor verification service can be provided anywhere in the home as well as on the Internet.

According to the present invention, the image of the visitor is transmitted to the visitor confirmation terminal of the user through RTP, and the visitor hears only the user's voice through the video door phone.

In the present invention, the SIP protocol is used for establishing and releasing a multimedia call session between a visitor and a user, and the Request for Comments (RFC) 1889 Real Transport Protocol (RTP) / RTCP (Real-time) is used to transmit voice and video between the visitor and the user. Transport Control Protocol) is used.

       The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

 1 is an exemplary system configuration for home visitor identification and call service to which the present invention is applied.

      As shown in FIG. 1, a system for home visitor identification and call service includes a terminal having a home visitor identification and call service function at a current location of a user of a video door phone 50 receiving a home visitor doorbell event. Visitor identification terminals) 70 to 90, and the home gateway 60 to which the visitor identification terminals 70 to 90 register SIP addresses.

For home visitor identification and call service, the SIP proxy server and SIP register (register) function is placed in the home gateway 60 in the IP-based home network, and the video door phone 50 and the user want to check the home visitor and call service. With a SIP UA (User Agent) module in the terminal (visitor checking terminal) 70 to 90, the user registers his current location to the home gateway 60 anytime, anywhere, and the visitor later calls the video door phone bell. When pressed, the event is notified to the user (which may be inside or outside the home) so that the user can make a voice call while checking the visitor's video.

The visitor identification terminals 70 to 90 are not limited to the wired / wireless internet connection such as a PC, a laptop, a PDA, a web terminal (WAP) terminal, and the like, as long as possible.

      2 is a detailed view illustrating an address registration process in a home visitor verification service method according to the present invention, wherein a user registers his access address information in the home gateway 60 through an internal or external terminal device. Shows.

As shown in FIG. 2, the home gateway 60 includes a SIP proxy server, a SIP register 110, and a SIP location server.

The video door phone 50 and the visitor identification terminals 70 to 100 may be equipped with a SIP UA module to register the current location and SIP address with the home gateway 60 anytime and anywhere.

First, the visitor identification terminal 70 finds the location of the SIP registrar 110 and requests registration of its location and SIP address. Here, the SIP address of the visitor identification terminal 70 is registered to be distinguished from the SIP address of the other visitor identification terminal (80 ~ 100). Subsequently, the SIP registrar 110 receiving the registration request from the visitor identification terminal 70 stores the location (inside and outside of the visitor identification terminal 70) and the SIP address of the visitor identification terminal 70 to provide a location service to the SIP proxy server. do.

Other user access terminals 80 to 100 also register their location and SIP address through the above process.

3 is a flowchart illustrating an embodiment of a home visitor identification service method according to the present invention. However, for the convenience of description, the same reference numerals will be used for the overlapping procedure of FIGS. 4 to 7 below.

First, the video door phone 50 that receives a doorbell press event from a visitor 401 generates a SIP connection request message and transmits it to the home gateway 60 (403,501). In contrast, the home gateway 60 receiving the SIP connection request message from the video door phone 50 transmits the SIP connection request message to the visitor confirmation terminal 70 to 100 by checking the current location of the user (510,601). ).

Thereafter, the visitor checking terminal 70 to 100 receiving the SIP connection request message from the home gateway 70 checks the setting state (602), and if the visitor checking terminal 70 to 100 is in the rejection state, rejects the SIP connection. The response message is transmitted to the video door phone 50 through the home gateway 60 (607, 404). At this time, the video door phone 50 receiving the SIP connection reject response message outputs a denial message to the visitor, "Please visit next" (407).

On the other hand, if the setting state check result 602, the setting state of the visitor confirmation terminal (70-100) is not rejection, the visitor confirmation terminal (70-100) outputs a doorbell event to the user (604), In response to the input of the connection response allow button being pressed (606), a SIP connection permission response message is generated and transmitted to the video door phone 50 through the home gateway 60 (607, 404). In response, the video door phone 50 receiving the SIP connection permission response message from the visitor confirmation terminal 70 transmits the SIP connection response confirmation message to the visitor confirmation terminal 70 through the home gateway 60 (406 and 608). . Then, the visitor confirmation terminal 70 to 100 receiving the SIP connection response confirmation message establishes a connection for transmitting / receiving voice data and receiving video data (609). Therefore, the video door phone 50 transmits the visitor's image from the video door phone 50 to the visitor check terminals 70 to 100, and a voice call is possible between the video door phone 50 and the visitor check terminals 70 to 100. .

That is, the video door phone 50 receives the visitor's video data and audio data through the input device, compresses the visitor's video data and makes it into RTP packets, and transmits them to the visitor check terminals 70 to 100. The video data and the audio data received from the video door phone 50 are output to the audio / audio output device and the display device connected to the visitor check terminals 70 to 100, and the user's voice data is input through the audio / sound input device. It receives the compressed data into RTP packets and transmits them to the video door phone 50. On the other hand, the video door phone 50 receiving the user's voice data RTP packet from the visitor confirmation terminal 70 outputs the user's voice data through the voice / sound output device. That is, the voice and video of the visitor are transmitted and output to the visitor confirmation terminals 70 to 100, and the voice of the user is transmitted and output to the video door phone 50.

Meanwhile, in the home visitor confirmation and call service session connection state at the user's current location, the visitor confirmation terminal 70 to 100 receives a press of the session connection end button from the user (701), and transmits / receives and receives video data. In order to terminate the session connection for receiving data, a SIP connection termination request message is generated and transmitted to the video door phone 50 through the home gateway 60 (704). In response to this, the video door phone 50 receiving the SIP connection termination request message from the visitor confirmation terminal 70 through the home gateway 60 checks the visitor through the home gateway 60 in response to the SIP connection termination request. The terminal transmits to the terminals 70 to 100 (705). At this time, the visitor confirmation terminal 70 receiving the SIP connection termination response message from the video door phone 50 through the home gateway 60 maintains the idle state until the next SIP connection request message is received.

       4 is a detailed flowchart illustrating an operation process of a video door phone in the home visitor confirmation service method according to the present invention, and illustrates an operation procedure when a home visitor confirmation call service session is connected in the video door phone 50.

      First, the video door phone 50 that receives the doorbell press event from the visitor in the idle state generates a SIP connection request message and transmits it to the home gateway 60 (401 to 403). Thereafter, the video door phone 60 transmits the SIP connection response confirmation message to the home gateway 60 in response to the SIP connection response message (connection grant or connection rejection) received from the home gateway 60 being the connection grant ( 404 to 406, a voice data transmission / reception and video data transmission session are connected between the visitor confirmation terminal 70 to 100 and the video door phone 50 (609).

However, if the SIP connection response message received from the home gateway 60 is a SIP connection reject response message, the video door phone 50 outputs a visitor rejection message to the visitor.

      FIG. 5 is a detailed flowchart illustrating an operation process of a home gateway in the home visitor confirmation service method according to the present invention, and illustrates an operation procedure when the home gateway 60 receives a SIP connection request message.

First, as the home gateway 60 receives the SIP connection request message from the video door phone 50 in the idle state (501), decodes the SIP connection request message (502).

Thereafter, the home gateway 60 searches for SIP address information of the visitor identification terminals 70 to 100 accessed by the user through the SIP registrar 110 (503) and checks the home network IP (504).

As a result of the check 504, if the home network IP is configured as a public IP, the home gateway delivers the SIP connection request message to the visitor checking terminals 70 to 100 without converting the address / port information.

As a result of the check 504, if the home network IP is configured as a private IP, the home gateway 60 checks the current position of the visitor checking terminals 70 to 100 (505).

As a result of the check 505, if the location of the visitor check terminals 70 to 100 is inside the home, the home gateway 60 additionally processes the SIP connection request message without modification of the address / port information (508), and checks the visitor check terminal ( 70 to 100) (509), and the idle state.

If the check result 505, the location of the visitor confirmation terminal (70 ~ 100) is outside, the home gateway 60 is network address translation (NAT) for the connection address / port of the home visitor confirmation service session at the user's current location Register the table (506). The SDP field in the SIP connection request message is modified (507), and the additionally processed SIP connection request message is transmitted to the visitor confirmation terminal 70 (508 and 509).

In the above process, the home network 50 receiving the SIP connection request message from the video door phone 50 transmits the received SIP connection request message to the visitor confirmation terminals 70 to 100. When the IP (Authenticated IP, Private IP) of the 70 to 100 is different, the home gateway processes the address / port information in the SIP connection request message to the public IP by performing network address translation (NAT), and confirms the visitor. It is about the process of conveying. That is, when the home network is a public IP and the home network is a private IP, and the visitor identification terminals 70 to 100 are also private IPs, the SIP is sent to the visitor identification terminal 70 to 100 without modification of address / port information in the SIP connection request message. The connection request message is delivered, and the home network is a private IP and the visitor verification terminal 70 to 100 only modifies the address / port information in the SIP connection request message to the visitor verification terminal 70 to 100 using the public IP. Deliver SIP connection request message.

FIG. 6 is a detailed flowchart illustrating a session setting process in a visitor confirming terminal of the home visitor confirming service method of the user according to the present invention, when a visitor confirming terminal 70 to 100 connects to a visitor confirming call service session; Indicates the operating procedure.

First, the visitor checking terminal that receives the SIP connection request message from the home gateway 60 in the idle state (70-100) checks the setting state (601, 602).

If the result of the check (602), the reception rejection state (603), the SIP connection rejection response message is transmitted to the video door phone 50 through the home gateway 60 (605). At this time, the video door phone 50 receiving the SIP connection rejection response message outputs a rejection message of "Please visit next."

If the check result (602), if not in the rejection state (603), the visitor confirmation terminal 70 ~ 100 outputs the doorbell event of the home visitor to the user (604), and receives the SIP connection response permission button from the user ( In operation 606, the SIP connection authorization response message is transmitted to the video door phone 50 through the home gateway 60 (607). When the visitor confirmation terminal 70 to 100 receives the SIP connection response confirmation message from the video door phone 50 through the home gateway 60 (608), the visitor confirmation terminal 70 to 100 and the video door phone A voice data transmission / reception and video data reception session are connected between 50 (609).

FIG. 7 is a detailed flowchart illustrating a session releasing process of a home visitor confirmation terminal in the home visitor confirmation service method according to the present invention. FIG. 7 is a flowchart illustrating an operation procedure when the visitor confirmation call service session ends in the visitor confirmation terminal 70 to 100. Indicates.

First, when the voice data transmission / reception and video data reception session connection state of FIG. 6 is received (609), when a user presses an end button press event from the user (701), the visitor confirmation terminal 70-100 transmits / receives voice data. And terminates the video data receiving session connection state (702), generates a SIP connection termination request message (703) and transmits to the video door phone 50 through the home gateway 60 (704). On the other hand, when the visitor confirmation terminal 70 to 100 receives the SIP connection termination response message from the video door phone 50 through the home gateway 60 (705), the call establishment connection with the video door phone 50 is established. Release it.

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

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the present invention can check the home visitor verification service at the user's current location in real time not only at home but also anywhere on the Internet, thereby removing the positional restriction on the home visitor verification service.

In addition, the present invention has the advantage that the home visitor hears only the user's voice, so that the user feels as if they are inside the home to have the effect of crime prevention.

In addition, the present invention has an economical advantage in the home visitor confirmation service method of the user's current location because it is based on the Internet rather than a paid telephone network or a wireless network.

1 is an exemplary system configuration for home visitor identification and call service to which the present invention is applied.

Figure 2 is a detailed description of an embodiment showing an address registration process of the home visitor verification service method according to the present invention.

Figure 3 is a flow diagram of one embodiment of a home visitor identification service method according to the present invention.

4 is a detailed flowchart illustrating an operation of the video door phone in the home visitor confirmation service method according to the present invention.

5 is a detailed flowchart illustrating an operation process of a home gateway in a home visitor identification service method according to the present invention;

6 is a flowchart illustrating a session establishment process in a visitor confirmation terminal of the home visitor confirmation service method according to the present invention;

7 is a detailed flowchart illustrating a session releasing process in a visitor confirmation terminal of the home visitor confirmation service method according to the present invention.

* Explanation of symbols on the main parts of the drawing

50: video door phone 60: home gateway

70,80,90,100: visitor check terminal 110: SIP register

Claims (8)

In the visitor verification service method using an Internet protocol (IP) -based home network, Address that registers the current location and access address of the visitor identification terminal with a SIP proxy server and SIP register function at the home gateway, and a SIP user agent (UA) module in the video door phone and the visitor identification terminal. Registration step; An address confirmation and session connection request step of, when the bell press event is generated from the video door phone, the home gateway checking a user's access address and requesting a session connection to the visitor verification terminal of the corresponding access address; Establishing, by the home gateway, a session between the video door phone and the visitor checking terminal according to the session connection response from the visitor checking terminal; An image transmission step of transmitting, by the home gateway, the visitor image transmitted from the video door phone to the visitor identification terminal through the formed session; And The session release step of the home gateway releasing the formed session according to the session release request from the visitor confirmation terminal; Home visitor identification service method using the Internet comprising a. The method of claim 1, Voice data exchange step of the home gateway relays the voice data of one side to the other side through the formed session Home visitor identification service method using the Internet further comprising. The method according to claim 1 or 2, The address registration step, Requesting the video door phone and the visitor identification terminal to register a current location and a SIP address; And According to the registration request, storing and registering a current location and a SIP address of the video door phone and the visitor identification terminal by the SIP registrar of the home gateway; Home visitor identification service method using the Internet comprising a. The method of claim 3, wherein The address verification and session connection request step, In response to receiving a doorbell press event, the video doorphone transmitting a SIP connection request message to the home gateway; Verifying a home network IP by the home gateway; A first session connection request step of transmitting a SIP connection request message to the visitor verification terminal without address conversion when the home network is configured as a public IP as a result of the verification of the home network IP verification step; A result of the home network IP verification step, when the home network is configured with a private IP, the home gateway checks the current location of the visitor verification terminal; A second session connection request step of delivering a SIP connection request message to the visitor identification terminal in the home network if the location of the visitor identification terminal is inside the home, as a result of the checking of the current location confirmation step; And A third session connection request step of transmitting a SIP connection request message to the visitor identification terminal outside the home network by performing network address translation (NAT) if the location of the visitor identification terminal is not inside the home, as a result of the checking of the current location confirmation step; Home visitor identification service method using the Internet, including The method of claim 4, wherein The third session connection request step, Registering a network address translation table for the address of the visitor identification terminal located outside; And Modifying SDP in SIP Connection Request Message Home visitor identification service method using the Internet comprising a. The method of claim 3, wherein The session establishment step, A confirmation step of the visitor confirmation terminal confirming its setting state; A session connection rejection step of transmitting, by the visitor confirmation terminal, a SIP connection rejection message to the video door phone when the setting state is a reception rejection state; Outputting the doorbell press event by the visitor checking terminal if the setting state is not a reception rejection result of the checking step; In response to receiving a session connection permission button press from a user, generating, by the visitor confirmation terminal, a SIP connection permission message and transmitting the SIP connection permission message to the video door phone; And When the video door phone generates and transmits a SIP connection response confirmation message, the home gateway establishes a session between the video door phone and the visitor confirmation terminal; Home visitor identification service method using the Internet comprising a. The method of claim 6, After the session connection rejection step or after the doorbell press event output step, if the visitor check terminal does not receive the session connection permission response, the video door phone outputs a visit rejection message Home visitor identification service method using the Internet further comprising. The method of claim 3 The session release step, Terminating video data transmission and / or audio data transmission / reception channel connection upon receiving an end button press event from a user; Generating, by the visitor confirmation terminal, a SIP termination request message and transmitting the generated SIP termination request message to the video door phone; And Generating, by the video door phone, a SIP termination permission message and transmitting it to the visitor checking terminal; Home visitor identification service method using the Internet comprising a.