KR100783713B1 - Surveillance system based on internet protocol and method thereof - Google Patents

Abstract

An IP(Internet Protocol)-based monitoring system, an IP address allocation method using the system, and a network camera operation method are provided to enable an equipment to automatically set an IP and to register channels once a user connects a cable with a desired port even without any knowledge of an IP network, thus the user can easily use the equipment. Plural network cameras(100) take pictures of monitoring areas, process the taken pictures according to IPs, and transmit the processed pictures. A network video recorder(200) receives port numbers by using virtual LAN(Local Area Network) ID tags assigned to each port connected with a hub from the cameras(100) coupled with the embedded hub, and allocates IP addresses based on the port numbers to broadcast the IP addresses, then receives/records the pictures of the monitoring areas sent from the cameras(100).

Description

Surveillance system based on internet protocol and method etc.

1 is a view showing the configuration of a monitoring system based on the Internet protocol according to an embodiment of the present invention.

2 is a diagram showing the detailed configuration of a network video recorder according to an embodiment of the present invention.

3 is a view showing a detailed configuration of a network camera according to an embodiment of the present invention.

4 is a diagram illustrating a method for allocating an internet protocol address according to an embodiment of the present invention.

The present invention relates to an internet protocol based surveillance system, an internet protocol address allocation method and a network camera operating method using the same. More specifically, to install a plurality of network equipment on the Internet protocol network is to enable easy installation even if the outside (문 外 漢) for the Internet protocol network.

With the development of digital video processing technology, IP (Internet Protocol) video technology is being introduced to the CCTV (Closed Circuit Television) market composed of coaxial cable.

However, while most CCTV installation technicians are familiar with analog technology, IP video equipment can only be installed with a good understanding of the IP network, so it is still an area that only professionals can handle.

The customer's request for easy installation and configuration has introduced methods that use autoconfiguration on existing IP networks, such as Dynamic Host Configuration Protocol (DHCP), but still require a significant understanding of the IP network itself.

Conventionally, a general CCTV system uses one line per camera to connect to a port of a video recorder, in which case the port number of the video recorder is the video channel number of the video recorder.

In other words, since the port to which the user connects becomes the video channel number to be observed and recorded, all the configuration is completed with only one 'connection' without any special setting or adjustment.

However, in an internet protocol based CCTV system, the user must first assign an internet protocol address so as not to overlap with existing user equipments, connect the network camera to the internet protocol video network, and reassign each internet protocol address.

All these steps are hampering the introduction of Internet protocol video into the CCTV market.

At this time, in the conventional Internet protocol based CCTV system, IP address is usually assigned directly.

In addition, when automatically assigning an IP address, a DHCP method can be used.

However, the DHCP method also needs to understand the IP network itself, and the IP address is empty as many as the number of cameras to be connected, and the user must know in advance the range of IP addresses to be used for the device and enter information into the DHCP server.

If you know the range of IP addresses to assign to the devices, you can use DHCP as an alternative. This is a way that one DHCP server assigns multiple DHCP clients one address in the IP address assigned to them.

According to this DHCP method, when power is applied, the DHCP client announces its presence to the DHCP server through broadcast on the network.

When the DHCP server receives this broadcast packet, it selects one of the ranges of IP addresses it has given and broadcasts the available IP address to the client that requested the IP address.

The DHCP client changes its IP address to the IP address assigned by this server.

However, after allocating an IP address, the relationship between the IP address and the video channel must be set separately, and problems such as changing the IP address when the power is turned off and on still exist.

In other words, assuming 16 network cameras and 1 network video recorder and this one network video recorder is a DHCP server, the user must first inform the network video recorder of the 16 IP address ranges assigned.

Then, the DHCP server installed in the network video recorder accepts requests from network cameras, which are DHCP clients, and allocates 16 IP addresses to each network camera.

After the IP assignment, the user must again inform the network video recorder which IP address corresponds to which channel.

Therefore, even if the DHCP method is set to allocate an empty Internet protocol address on the network, it is not known which camera has been assigned which Internet protocol address, and the Internet protocol address may be changed again when the power is turned off. To prevent this, more information (such as the camera's mac address) must be entered into the DHCP server, but this also requires user intervention.

That is, the problems of the conventional Internet protocol based CCTV system are classified into the network resources, the cabling side, and the IP address allocation side as follows.

First, in terms of network resources and cabling, connecting a network camera and a network video recorder to a user's Internet protocol network reduces the overall bandwidth of the network. To avoid this, configuring a separate network requires some network expertise, starting with the configuration of the equipment. In other words, what kind of product should be chosen as the hub, and how to make the wiring?

Next, according to the IP address allocation aspect, the user must directly assign and enter the addresses of the network video recorder and the network camera, or use a DHCP server, both of which require network expertise.

Accordingly, a technical problem of the present invention is to provide an internet protocol-based surveillance system that simplifies the allocation and connection of an internet protocol network by embedding a hub in the network video recorder itself, an internet protocol address allocation method, and a network camera operating method using the same. It is.

Internet protocol-based monitoring system according to a feature of the present invention in order to achieve the problem as described above,

A plurality of network cameras which capture an image of the surveillance area and process and transmit the image according to an Internet protocol; And receiving a corresponding port number from the plurality of network cameras connected to a built-in hub by using a virtual LAN ID tag assigned to each port connected to the hub, and broadcasting by assigning an internet protocol address based on the port number. It includes a network video recorder for receiving and recording the transmitted image of the surveillance area,

The plurality of network cameras,

In response to a request of the network video recorder using the virtual LAN ID tag, the virtual LAN ID tag matching the corresponding port number connected to the hub is broadcasted to receive the allocated Internet protocol address.

Internet protocol allocation method according to a feature of the present invention,

A method of allocating an internet protocol address to a plurality of network cameras that receive and record an image of a surveillance region by recording and processing an image of the surveillance region according to an internet protocol. Broadcasting, by a network video recorder connected to a network camera, first packet data including a virtual LAN ID tag assigned to each port to which the network camera is connected; Receiving second packet data broadcasted from the plurality of network cameras, each including the virtual LAN ID tag corresponding to the corresponding port number; Allocating an internet protocol address to a corresponding network camera based on the corresponding port number; And broadcasting third packet data including the assigned internet protocol address.

A network camera operating method for allocating an internet protocol address according to an aspect of the present invention may include:

An operation method for receiving a network protocol record from a network video recorder for receiving and recording an image of the surveillance region by a plurality of network cameras which capture an image of the surveillance region and process and transmit it according to an internet protocol. Receiving broadcast first packet data for requesting transmission of a number of a corresponding port connected to the hub by using a virtual LAN ID tag attached to each corresponding port connected to a hub embedded in a recorder; Generating and broadcasting second packet data including the virtual LAN ID tag matching the corresponding port connected to the hub; Receiving broadcasted third packet data including an internet protocol address allocated based on the port number of the corresponding port; And setting a network address of the network camera with the internet protocol address obtained from the third packet data.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.

In addition, the term module described herein refers to a unit for processing a specific function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

Now, an internet protocol based monitoring system and method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the configuration of a monitoring system based on the Internet protocol according to an embodiment of the present invention.

According to FIG. 1, a surveillance system based on an Internet protocol includes a plurality of network cameras (where only three network cameras are shown in the drawing, but not limited to the above) 100, a network video recorder 200, and a user computer 300. ).

The network camera 100 captures an image of the surveillance region, processes the image, and transmits the image according to the Internet protocol. In particular, at the request of the network video recorder 200, it broadcasts a virtual LAN ID tag matching with the corresponding port number connected thereto, and receives the assigned Internet protocol address.

The network video recorder 200 records an image of the surveillance area received from the network camera 100. In particular, a hub connected to the plurality of network cameras 100 is embedded. It assigns a virtual LAN ID tag to each port connected to the hub and receives each port number from the network camera using it. Broadcast by assigning internet protocol address using the received port number.

The user computer 300 is connected to the network video recorder 200 through a user network to provide an internet protocol based surveillance service using an image of a surveillance region recorded by the network video recorder 200.

2 is a diagram showing the detailed configuration of a network video recorder according to an embodiment of the present invention.

According to FIG. 2, the network video recorder 200 includes a hub 220 and a controller 240.

The hub 220 assigns a virtual LAN ID tag to each corresponding port to which the plurality of network cameras 100 are connected and processes data input / output for communication with the plurality of network cameras 100.

Here, a virtual local area network (VLAN) is a function used to limit data communication between devices connected to the hub 220. This is a function in which data communication between devices is limited by grouping ports of a hub to which each device is connected to deny data communication between ports belonging to different groups.

The hub 220 assigns a virtual LAN ID to each port to which each network camera 100 is connected by using the virtual LAN function.

The control unit 240 checks a corresponding port number of each of the network cameras 100 using the virtual LAN function of the hub 220 and allocates and broadcasts an internet protocol address based on the corresponding port number.

In more detail, this includes the broadcasting module 242, the internet protocol allocation module 244, and the CPU (central processing unit) 246.

The broadcasting module 242 includes the virtual LAN ID tag assigned by the hub 220 for each port by using the virtual LAN function in the first packet data requesting to transmit the connected port number of each of the network cameras 100. do.

The broadcasting module 242 receives the second packet data broadcasted in response to the first packet data by including a virtual LAN ID tag matched to each connected port of the network camera 100.

The broadcasting module 242 broadcasts the third packet data including the Internet protocol address allocated based on the port number of the network camera 100.

The internet protocol allocation module 244 allocates the Internet protocol address of the network camera 100 based on the port number checked through the virtual LAN ID tag obtained from the second packet data received by the broadcasting module 242.

At this time, the Internet protocol assignment module 244 sets the received port number as the video channel number of the corresponding network camera.

In addition, the Internet protocol assignment module 244 may allocate the Internet protocol address to include the corresponding port number so that the Internet protocol address can be identified for each of the plurality of network cameras.

For example, 192.168.0.1 is assigned to the network camera connected to port 1, 192.168.0.2 to port 2, and 192.168.0.16 to port 16, and each port is recognized as a channel of each video.

The CPU (central processing unit) 246 is connected to the broadcasting module 242 and the Internet protocol allocation module 244 to control the function linkage between each module and the processing of the operation accordingly.

3 is a view showing a detailed configuration of a network camera according to an embodiment of the present invention.

According to FIG. 3, the network camera 100 includes a hub connection unit 120 and a controller 140.

The hub connection unit 120 is connected to the hub 220 embedded in the network video recorder 200, receives a request of the network video recorder 200 and an internet protocol address, and outputs a virtual LAN ID tag matching the port number. .

When the transmission of the corresponding port number connected to the hub 220 is requested, the controller 140 checks the corresponding port number and broadcasts the virtual LAN ID tag matching the broadcasted Internet protocol address assigned based on the corresponding port number. Receive

In more detail, this includes the broadcasting module 142, the internet protocol setting module 144, and the CPU (central processing unit) 146.

The broadcasting module 142 receives the first packet data broadcasted to request transmission of the corresponding port number by including the virtual LAN ID tag. In addition, the second packet data including the virtual LAN ID tag matching the corresponding port number is broadcast. In addition, the third packet data broadcasted including the Internet protocol address allocated based on the corresponding port number is received.

The internet protocol setting module 144 sets a network address with the internet protocol address received by the broadcasting module 142.

The CPU (central processing unit) 146 is connected to the broadcasting module 142 and the Internet protocol setting module 144 to control the function linkage between each module and the processing of the operation accordingly.

Now, a method of allocating an Internet protocol address based on the above-described configuration will be described.

4 is a diagram illustrating a method for allocating an internet protocol address according to an embodiment of the present invention.

According to FIG. 4, the network video recorder 200 and the network camera 100 are connected through a hub 220 embedded in the network video recorder to communicate with each other.

The network video recorder 200 assigns a virtual LAN ID for each port to which the network cameras 100 are connected by using the virtual LAN function of the built-in hub 220 (S101).

The network video recorder 200 generates and broadcasts the first packet data including the virtual LAN ID given in step S101 (S103).

In this case, the first packet data is packet data for requesting transmission of the connected port number of each of the network cameras 100.

When the first packet data is received, the network camera 100 checks the connected port number (S105).

The network camera 100 generates second packet data including the virtual LAN ID tag matching the checked port number (S107).

The network camera 100 broadcasts the second packet data generated in step S107 in response to the first packet data (S109).

The network video recorder 200 checks the connected port number of each of the network cameras 100 through the broadcasted second packet data (S111).

The network video recorder 200 allocates an internet protocol address based on the identified port number (S113).

The network video recorder 200 broadcasts the third packet data including the Internet protocol address allocated in step S113 (S115).

The network video recorder 200 sets the port number to the video channel number of the corresponding network camera 100 (S117).

Therefore, since the user does not need to separately set the relationship between the network camera 100 and the image channel, a port connected to the hub 220 becomes a channel soon, which enables intuitive installation.

The network camera 100 that has received the third packet data in step S115 sets its network address to the Internet protocol address assigned in step S113 (S119).

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

The scope of the present invention is not limited to the above-described embodiments, but various modifications and improvements of those skilled in the art using the basic concept of the present invention as defined in the following claims are also within the scope of the present invention.

As described above, according to the embodiment of the present invention, the user simply connects the cable to the desired port without knowledge of the IP network, and automatically sets the IP and registers the channel through the device's own communication. It's easy to use without knowing that you're using a network.

In addition, by providing an easy installation method for customers who want to replace existing analog equipment with IP equipment in the IP video surveillance market, it lowers the barrier to entry into the IP video surveillance market.

Claims (14)

A plurality of network cameras which capture an image of the surveillance area and process and transmit the image according to an Internet protocol; And Receives the corresponding port number by using the virtual LAN ID tag assigned to each port connected to the hub from the plurality of network cameras connected to the built-in hub, broadcasts by allocating an Internet protocol address based on the port number, and transmits the plurality of network cameras. A network video recorder for receiving and recording an image of the surveillance area; The plurality of network cameras, And receiving the allocated Internet protocol address by broadcasting the virtual LAN ID tag matching the corresponding port number connected to the hub according to a request of the network video recorder using the virtual LAN ID tag. The method of claim 1, The network video recorder, Internet protocol-based monitoring system, characterized in that for setting the received port number to the video channel number of the network camera. The method of claim 1, The network video recorder, And assigning the port number to the internet protocol address so as to identify the internet protocol address for each of the plurality of network cameras. The method according to any one of claims 1 to 3, The network video recorder, A hub for assigning the virtual LAN ID tag to each corresponding port to which the plurality of network cameras are connected and processing data input / output for communication with the plurality of network cameras; And A control unit connected to the hub to request transmission of a corresponding port number to which each of the network cameras is connected, and to allocate and broadcast an Internet protocol address based on the received port number. Internet protocol based surveillance system comprising a. The method of claim 4, wherein The control unit, The first packet data for requesting transmission of the corresponding port number including the virtual LAN ID tag assigned by the hub and the Internet protocol address allocated based on the corresponding port number are broadcasted and matched with the corresponding port number. A broadcasting module for receiving the broadcasted virtual LAN ID tag; And An internet protocol allocation module for allocating the internet protocol address based on the corresponding port number identified based on the received virtual LAN ID tag Internet protocol-based monitoring system comprising a. The method according to any one of claims 1 to 3, The plurality of network cameras, A controller for checking a corresponding port number and transmitting the virtual LAN ID tag matched with the corresponding port number and receiving the Internet protocol address allocated based on the corresponding port number when a request for transmission of a corresponding port number connected to the hub is requested; And A hub connection unit connected to the hub to receive a request of the network video recorder and the Internet protocol address and to output the virtual LAN ID tag Internet protocol based surveillance system comprising a. The method of claim 6, The control unit, Receiving the first packet data broadcasted to request transmission of the corresponding port number by including the virtual LAN ID tag and broadcasting the second packet data including the virtual LAN ID tag, wherein the Internet protocol address is A broadcasting module for receiving the third packet data included in the broadcast; And An internet protocol setting module configured to set a network address of the network camera using the received internet protocol address Internet protocol-based monitoring system comprising a. In a method of allocating an internet protocol address to a plurality of network cameras that receive and record an image of a surveillance area, process the image of the surveillance area, process the image according to an internet protocol, and transmit the same. Broadcasting, by a network video recorder having a plurality of network cameras connected to an embedded hub, first packet data including a virtual LAN ID tag assigned to each port to which each network camera is connected; Receiving second packet data broadcasted from the plurality of network cameras, each including the virtual LAN ID tag corresponding to the corresponding port number; Allocating an internet protocol address to a corresponding network camera based on the corresponding port number; And Broadcasting third packet data including the assigned internet protocol address; Internet protocol address assignment method comprising a. The method of claim 8, The broadcasting of the first packet data may include: Assigning a virtual LAN ID tag that matches a corresponding port number for each port connected to the hub; And Broadcasting the first packet data including the virtual LAN ID tag Internet protocol address allocation method comprising a. The method according to claim 8 or 9, Setting the received port number as an image channel number of the corresponding network camera Internet protocol address assignment method further comprising. The method of claim 10, Assigning the address, And assigning the port number to the internet protocol address so as to identify the internet protocol address for each of the plurality of network cameras. In the operation method for a plurality of network cameras to take the image of the surveillance area, process and transmit according to the Internet protocol to receive an Internet protocol address from the network video recorder for receiving and recording the image of the surveillance area, Receiving broadcast first packet data requesting to transmit a number of a corresponding port connected to the hub by using a virtual LAN ID tag assigned to each corresponding port connected to a hub embedded in the network video recorder; Generating and broadcasting second packet data including the virtual LAN ID tag matching the corresponding port connected to the hub; Receiving broadcasted third packet data including an internet protocol address allocated based on the port number of the corresponding port; And Setting a network address of the network camera with the internet protocol address obtained from the third packet data Network camera operating method comprising a. The method of claim 12, The broadcasting step, Confirming a corresponding port number when the first packet data is received; Generating second packet data including the virtual LAN ID tag matching the identified port number; And Broadcasting the second packet data Network camera operating method comprising a. The method according to claim 12 or 13, The corresponding port number is Method of operating a network camera, characterized in that the video channel number of the network camera is set.

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