KR20030034958A - Home monitoring system and control method thereof - Google Patents

Abstract

PURPOSE: A home monitoring system and a method of controlling the system are provided to allow even an Internet subscriber line using flexible IP to connect to a subscriber's PC to monitor the inside of the house using a PC camera. CONSTITUTION: A home monitoring system includes a plurality of PC cameras(211) set in the house or an area to be monitored, and a monitoring terminal(212) that controls the PC cameras, connects to the Internet through an Internet subscriber line, and has a client program(213) installed therein. The home monitoring system further includes a dynamic domain name server(220), and at least one external terminal(230). The dynamic domain name server is connected with the monitoring terminal through the Internet and gives a domain name to the monitoring terminal to allow the monitoring terminal to connect to the Internet in the same domain name all the time. The external terminal is connected with the Internet to monitor the situation of the home or area to be monitored, photographed by the PC cameras, and remotely controls the monitoring terminal.

Description

Home monitoring system and control method

The present invention relates to a home monitoring system (Home Monitoring System) for monitoring the status of a home through the Internet from a remote location, and more particularly, by assigning a domain name to a personal computer of a subscriber. The present invention relates to a home monitoring system based on the Dynamic Domain Name System that can be accessed with the same domain name regardless of the dynamic IP (Internet Protocol) that changes every time the Internet is connected.

In the conventional home monitoring system, as shown in FIG. 1, a camera 112 and a video server 111 are installed in each home or surveillance region 110, and the Internet 100 is connected using a dedicated line 130. Connected. The user monitors each home or area to be monitored 110 by the terminal 120 using a web browser from the outside.

In the Internet-based communication, the other party's IP needs to be known. In order for the user to access the subscriber's video server or the control device through a terminal connected to the Internet, and to view the monitoring situation, the user's IP must be known.

However, most Internet subscriber lines use xDSL, cable modems, etc., most of which use dynamic IPs that change every time a subscriber connects to the Internet. In the case of using such a dynamic IP, since the IP of the subscriber's PC changes every time when accessing the Internet, the subscriber from the outside cannot access the PC and remotely monitor the home or the monitored area.

Therefore, the conventional home monitoring system has a disadvantage in that fixed IP is allocated to expensive leased lines or xDSL, cable modem, etc., to be allocated a fixed IP in order to solve the above problems. have.

In addition, since a control device for controlling a video server or various monitoring devices is purchased, and an expensive monitoring camera must be purchased, there is a problem in that installation cost is high.

Accordingly, an object of the present invention is to use a dynamic IP by assigning a domain name to a subscriber's PC and having a dynamic domain name server capable of always accessing the same domain name regardless of the changing IP when the subscriber PC is connected to the Internet. It is to provide a home monitoring system and a method of controlling the same so that an Internet subscriber line can access a subscriber's PC and monitor various places in the house with a PC camera.

In order to achieve the above object, the home monitoring system according to the present invention controls a plurality of PC cameras installed in a home or a surveillance target area, the PC cameras, and is connected to the Internet by an Internet subscriber line. A dynamic domain name server connected to the installed monitoring terminal, the internet with the monitoring terminal, and assigning a domain name to the monitoring terminal so that the same terminal can always be connected with the same domain name regardless of the IP changing every time the internet is connected, and access to the internet. One or more external terminals are provided to monitor the situation of the home or surveillance region captured by the PC camera and perform remote control of the monitoring terminal.

In order to achieve the above object, a home monitoring control method according to the present invention includes a first step in which a monitoring terminal accesses a dynamic domain name server to register an ID, a password, and a domain name, and an IP assigned by the monitoring terminal at internet access. The second step of transmitting the to the dynamic domain name server, the third step of storing the bound domain name and IP after binding the transmitted IP with the registered domain name, and the external terminal connected to the Internet A fourth step of querying a domain name server for an IP of the monitoring terminal corresponding to the domain name, a fifth step of responding with an IP which is most recently bound of the monitoring terminal corresponding to the domain name, and an external receiving the IP The terminal connects to the monitoring terminal and controls the operation of several PC cameras. And a sixth step of monitoring the image.

1 is a view for explaining a home monitoring system through a conventional Internet.

2 is a block diagram of a home monitoring system according to the present invention.

3 is a block diagram of the dynamic domain name server of FIG.

4 is a view for explaining the operation of the home monitoring system according to the present invention.

5 is a flow chart for explaining the operation of the client program of the present invention.

6 is a flow chart for explaining the operation of the client daemon of FIG.

7 is a flow chart for explaining the operation of the NS daemon of FIG.

Explanation of symbols on the main parts of the drawings

211: PC camera 212: Monitoring terminal

213: Client Program 220: Dynamic Domain Name Server

230: external terminal 240: Internet subscriber line

310: web server 311: web service

312: client daemon 320: name server

321: NS Daemon 322: BIND

330: DB server 331: DDNS DB

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

2 is a configuration diagram of a home monitoring system according to the present invention, and FIG. 3 is a configuration diagram of the dynamic domain name server of FIG. 1.

Referring to these drawings, in the home monitoring system according to the present invention, as shown in FIG. 2, a plurality of PC cameras 211 are installed in a home or surveillance region 210.

The plurality of PC cameras 211 are connected to one monitoring terminal 212. The monitoring terminal 212 is a general personal computer by an Internet subscriber line, for example, xDSL, cable modem, or the like. It is connected to the Internet and controls the operation of the PC camera 211.

The monitoring terminal 212 transmits an IP (Internet Protocol) assigned to the monitoring terminal to the dynamic domain name server 220, that is, binding and external binding after binding. In the connection request 230, a client program 213 which is responsible for service thereof is installed and executed. The client program 213 loads the PC camera 211 into a memory and transmits an input image to the external terminal 230.

The dynamic domain name server 220 is connected to the monitoring terminal 212 and the external terminal 230 by being connected to the Internet, and after assigning a domain name to the monitoring terminal 212, the user of the external terminal 230 Regardless of the IP changing every time the monitoring terminal 212 is connected to the Internet, the monitoring terminal 212 is always connected to the monitoring terminal 212 to monitor a video of a home or a surveillance target area.

The external terminal 230 is connected to the Internet and monitors the situation of the home or surveillance region 210 captured by the PC camera in a video, and remotely control the monitoring terminal 212 or the monitoring terminal 212 Monitor the situation elsewhere by changing the number of the PC camera 211 connected to.

The dynamic domain name server 220 includes three servers, such as a web server 310, a name server 320, and a DB server 330, as shown in FIG. 3. It is composed.

The web server 310 is a client daemon (312) for receiving and processing a variety of information, for example, ID, IP, domain, etc. delivered from the client program 213 of the monitoring terminal 212, the client program It is composed of a web service (311) that can play the role of (213) on the web.

The name server 320 generates a dynamic update packet based on the binding / unbinding information transmitted from the client daemon 312 and returns the result to the client daemon 312. A daemon (NS daemon) 321 and a Berkeley Internet Name Domain (BIND) 322 for connecting a dynamic update packet generated by the NS daemon 321 to a domain and an IP.

The DB server 330 is configured as a DDNS DB 331 to store and manage various user information, binding states, unbinding states, home monitoring states, and the like.

The client daemon 312 receives and processes various pieces of information transmitted from the client program 213 of the monitoring terminal 212, and the IP assigned to the internet connection of the monitoring terminal 212 is a dynamic domain name server 220. ), The client daemon 312 receives and processes it.

In addition, the client daemon 312 stores data in the DB server 330 when a login, a binding request, an unbinding request, and the like are transmitted, and names each request. Transfer to NS daemon 321 of server 320. When the result is returned from the NS daemon 321, the result is returned to the client.

The NS daemon 321 generates a dynamic update packet based on the binding / unbinding information transmitted from the client daemon 312 and sends it to the BIND 322, and sends the result to the client daemon 312. Return to. The BIND 322 is the most widely used software for Domain Name System (DNS).

The operation of the home monitoring system having the above configuration will be described with reference to the accompanying drawings.

In general, Domain Name System (DNS) implements the mapping function of domain names to static IP. In other words, 211.107.23.255 상호 provides the interconversion of sea.thenewland.com and the name syntax rules of sea.thenewland.com.

There is a need for an external terminal 230 equipped with a web browser capable of connecting to an Internet subscriber line 240 using a dynamic IP, that is, an xDSL, a cable modem, or the like.

In the Internet subscriber line 240 using the floating IP, since the monitoring terminal 212 is assigned an IP when connecting to the Internet, the monitoring terminal 212 cannot be externally connected to the monitoring terminal 212. Accordingly, the dynamic domain name server 220 supports the connection to the same domain name at all times even if the monitoring terminal 212 has an IP that changes every time the Internet is connected.

4 is a view for explaining the operation of the home monitoring system according to the present invention.

Referring to FIG. 4, first, a user of the monitoring terminal 212 accesses the Internet and then accesses the dynamic domain name server 220 to register an ID, a password, and a domain name to be used for the monitoring terminal 212. (S401).

Thereafter, the monitoring terminal 212 transmits the dynamic IP assigned to the dynamic domain name server 220 when the Internet is connected (S402). If the allocated IP is 211.107.23.255, the IP is transmitted to the dynamic domain name server 220.

The dynamic domain name server 220 binds the transmitted IP to a domain name that has already been registered, and stores the bound domain name and the allocated IP in pairs (S403). If the registered domain name of the monitoring terminal 212 is sea.thenewland.com, it is stored as a pair of 211.107.23.255 ⇔ sea.thenewland.com, thereby completing the connection to the monitoring terminal 212 from the external Internet network.

The external terminal 230 connected to the Internet network queries the dynamic domain name server 220 for the IP of the monitoring terminal corresponding to the domain name (http://sea.thenewland.com) (S404). In this case, when the user of the external terminal 230 accesses the monitoring terminal 212 through the Internet, the user accesses the domain name, and does not participate in the IP number.

The dynamic domain name server 220 responds with the most recently bound IP (211.107.23.255) of the monitoring terminal corresponding to the domain name requested by the external terminal 230 (S405).

The user of the external terminal 230 receiving the IP is connected to the monitoring terminal 212 to control the operation of the plurality of PC cameras 211 and monitor the captured video (S406).

In this case, steps S402 and S403 shown in FIG. 4 are performed every time the monitoring terminal 212 is connected to the Internet, and the step S402 is performed automatically so that the monitoring terminal 212 is automatically performed without user involvement when connecting to the Internet. 213).

The user of the monitoring terminal 212 executes the client program 213 when connected to the Internet. When the subscriber of the monitoring terminal 212 executes the client program 213, the client program 213 transmits the allocated IP of the monitoring terminal 212 to the dynamic domain name server 220 and the external terminal 230. ) Allows a user to access the monitoring terminal 212 with a domain name, such as http://sea.thenewland.com. That is, the PC camera 211 is loaded into a memory to transmit an input image to a user of the external terminal 230.

5 is a flowchart illustrating the operation of the client program of the present invention.

Referring to FIG. 5, the subscriber of the monitoring terminal 212 registers an IP, a password and a domain name to be used in the dynamic domain name server 220, for example, sea.thenewland.com (S501). These properties are stored without duplication in communication with the client daemon 312 of the dynamic domain name server 220.

The subscriber of the monitoring terminal 212 logs in to the dynamic domain name server 220 by inputting the registered ID and password (S502).

If the authentication is successful (S503), a local IP, for example, 211.107.23.255 is brought (S504), wherein the IP is a floating IP assigned by the monitoring terminal 212 when accessing the Internet.

The obtained IP is transmitted to the dynamic domain name server 220 (S505), and the received dynamic domain name server 220 binds to the domain name (sea.thenewland.com) previously registered.

When the return of the binding success is received from the client daemon 312, the PC camera 211 is loaded into the memory to prepare for monitoring (S507). Thereafter, the client program 213 enters a standby state and waits for an external home monitoring connection (S508).

When an external connection is received from at least one external terminal 230 (S509), basic authentication, for example, ID and password input, etc., starts broadcasting of the captured video to the PC camera 211 (S510). In this case, when there are a large number of PC cameras, the user of the external terminal 230 may change the camera, and broadcast the captured video to the changed camera while changing the camera device according to the change of the camera number (S512).

As described above, when the broadcast termination signal is input from the external terminal 230 in the course of the broadcast, the broadcast ends (S513) (S514).

By the operation of the client program as described above, the Internet user of the external terminal 230 connects to a domain name such as http://sea.thenewland.com using a web browser and monitors the current house situation or monitoring. Monitor the target area.

For reference, FIG. 6 is a flowchart for describing an operation of the client daemon of FIG. 3.

Referring to FIG. 6, when the client daemon 312 is connected from the outside in the process of maintaining a standby state waiting for the connection from the external monitoring terminal 212, the monitoring terminal 212 requests The service type is determined (S601) (S602).

When the service requested by the monitoring terminal 212 is ID registration, the input ID, password, and domain name are registered (S603), and the result is returned to the monitoring terminal 212 (S608).

When the service required by the monitoring terminal 212 is a binding, the IP is bound and transmitted to the DB server 330 and the name server 320 (S604) (S606), and receives the binding result and returns to the monitoring terminal 212. (S607) (S608).

When the service required by the monitoring terminal 212 is unbinding, the IP is unbound and transferred to the DB server 330 and the name server 320 (S605) (S606), and the unbinding result is received from the monitoring terminal 212. (S607) (S608).

On the other hand, Figure 7 is a flow chart for explaining the operation of the NS daemon of FIG.

Referring to FIG. 7, when the NS daemon 321 makes a connection from the client daemon 312 while maintaining a standby state, the NS daemon 321 determines the type of service input from the client daemon 312 (S701). (S702).

When the service input from the client daemon 312 is a binding, after generating a binding packet, the generated binding packet is transmitted to the BIND 322 (S703) (S705), and the result is the client daemon. It returns to 312 (S706).

If the service input from the client daemon 312 is unbinding, after generating an unbinding packet, the generated unbinding packet is transmitted to the BIND 322 (S704) (S705), and as a result, To the client daemon 312 (S706).

The home monitoring system according to the present invention may use various additional services as the domain name is assigned to the monitoring terminal 212 of the subscriber. As an additional service, a domain name is assigned to the monitoring terminal 212, which may serve as an Internet server, thereby enabling services such as web, ftp, and mail.

In addition, since the dynamic domain name server 220 provides a means for accessing a subscriber PC used as the monitoring terminal 212 in the Internet, the dynamic domain name server 220 may be provided as a foundation technology of many applications based on the same. That is, SOHO operators can operate their own web sites at their homes, and remotely access files at home from the office via ftp, And mail service is possible. In addition, it can be a base technology of remote access for various information appliances.

What has been described above is just one embodiment of a home monitoring system and a control method according to the present invention, anyone of ordinary skill in the art to which the present invention pertains various modifications.

As described above, the home monitoring system and its control method according to the present invention has the following effects.

First, Internet subscriber line using dynamic IP, such as xDSL, Cable Modem, etc., can be connected to monitoring terminal in home or surveillance area by inputting domain name only, so that it can be connected to office or PC room. It is possible to access the PC in the home or surveillance area from anywhere and monitor the current situation by video, and also to provide Internet services such as web, ftp and mail from the subscriber's PC.

Second, there are advantages such as using PCs and PC cameras that are prevalent in most homes, and using expensive leased lines and not having to allocate a fixed IP, so that there is no additional cost.

Claims (5)

Several PC cameras installed in a home or surveillance area; A monitoring terminal that controls the PC camera and is connected to the Internet by an Internet subscriber line (xDSL, Cable Modem, etc.) and has a client program installed therein; A dynamic domain name server connected to the monitoring terminal through the Internet and assigning a domain name to the monitoring terminal to always access the same domain name regardless of a changing IP every time the Internet is connected; And And at least one external terminal connected to the Internet to monitor a situation of a home or a surveillance region photographed by the PC camera and performing remote control of the monitoring terminal. The method of claim 1, wherein the client program installed in the monitoring terminal, A home monitoring system, characterized in that it transmits the assigned IP (Internet Protocol) to the dynamic domain name server when the monitoring terminal is connected to the Internet, and is responsible for servicing the connection request from an external terminal. The method of claim 1, wherein the dynamic domain name server, A web server comprising a client daemon for receiving and processing various pieces of information transmitted from a client program of the monitoring terminal, and a web service for delivering the various pieces of information on the web; NS daemon for generating a dynamic update packet based on the binding / unbinding information transmitted from the client daemon and returning the result to the client daemon, and a domain for generating the dynamic update packet generated by the NS daemon. A name server comprising a BIND (Berkeley Internet Name Domain) for connecting to the IP; And Home monitoring system, characterized in that provided with a DB server (DB server) for storing and managing a variety of user information, binding status, unbinding status, home monitoring status. A first step of the monitoring terminal accessing the dynamic domain name server to register an ID, a password, and a domain name; A second step of the monitoring terminal transmitting the allocated IP to the dynamic domain name server when accessing the Internet; A third step of binding the transmitted IP with the registered domain name and storing the bound domain name and the IP; A fourth step of, by an external terminal connected to the Internet, querying the dynamic domain name server of the IP of the monitoring terminal corresponding to the domain name; Responding with the most recently bound IP of the monitoring terminal corresponding to the domain name; And And a sixth step of controlling the operation of the plurality of PC cameras and monitoring the captured video by accessing the external terminal receiving the IP to the monitoring terminal. The method of claim 4, wherein the second step and the third step, Home monitoring control method characterized in that the monitoring terminal is made every time the Internet access.