KR101241736B1 - Port forwarding configuration method, terminal device and system using the same - Google Patents

Abstract

Port forwarding setting method according to an embodiment of the present invention comprises the steps of determining any one of the at least one network terminal device located on the private network main network terminal device; Executing port forwarding by allocating an IP and a communication port corresponding to the main network terminal device; Requesting data of a sub-network terminal located on a private network from the main network terminal to which the port forwarding has been performed; And receiving data of the sub network terminal device transmitted to the main network terminal device by the request.

Description

PORT FORWARDING CONFIGURATION METHOD, TERMINAL DEVICE AND SYSTEM USING THE SAME}

The present invention relates to a network camera and a method of setting port forwarding thereof.

Recently, due to the rapid growth of the high-speed communication network and the Internet population, the movement to use the Internet for controlling and monitoring electronic devices or facilities in the home has been greatly increased. Of course, even before the spread of the Internet, there have been efforts to control various devices by the number of ringing sounds from the outside, but due to the limitations of home network technology, they have not been actively deployed. However, with the proliferation of various wired and wireless communication technologies such as power line communication and wireless communication, interest and demand for home networks are increasing.

Such a home network is a control network for the control and automation of lighting, air conditioning, and home appliances in homes and offices. It operates at a low speed of less than 1 Mbps, and requires low interoperability between different equipments. It should be possible.

In particular, in order to remotely control and monitor the Internet, networking of a home gateway and a controlled device with a web server is required. It is common for home lighting appliances, heating appliances and home appliances to have a microprocessor.

Most RS-232C serial communication ports for test computers are supported, making it easy to connect to a home gateway.

However, in order to remotely control the control target devices in the wireless LAN environment through the Internet, first, the user directly accesses the setting program of the control target device, sets a fixed IP and a port to be used, and then uses a wired / wireless router ( There was a problem in that the port forwarding setting was manually set to the fixed IP set in the control target device and the port to be used by accessing the AP's configuration program.

According to an embodiment of the present invention, a plurality of network terminal apparatuses existing on a private network can be connected through a minimum port forwarding operation, and thus image data acquired by the connected network terminal apparatus can be provided.

The technical problems to be solved in the proposed embodiments are not limited to the above-mentioned technical problems, and other technical problems which are not mentioned are clearly described from the following description to those skilled in the art It can be understood.

Port forwarding setting method according to an embodiment of the present invention comprises the steps of determining any one of the at least one network terminal device located on the private network main network terminal device; Executing port forwarding by allocating an IP and a communication port corresponding to the main network terminal device; Requesting data of a sub-network terminal located on a private network from the main network terminal to which the port forwarding has been performed; And receiving data of the sub network terminal device transmitted to the main network terminal device by the request.

Preferably, the network terminal device is a network camera, and the data includes image data.

More preferably, there are a plurality of network terminal apparatuses located on the private network, the main network terminal apparatus is any one of the plurality of network terminal apparatuses, and the sub network terminal apparatus is the main network among the plurality of network terminal apparatuses. Other network terminal devices except network terminal devices.

More preferably, the method may further include receiving a list of the sub network terminal devices transmitted from the main network terminal device.

More preferably, displaying the received list; And selecting one of the sub-network terminal devices from the displayed list, wherein the requesting data includes requesting data provided by the selected sub-network terminal device.

More preferably, the main network terminal apparatus searches for at least one sub network terminal apparatus existing on a private network and stores a list of the searched sub network terminal apparatuses.

More preferably, the main network terminal periodically re-searches the sub network terminal and updates the stored list accordingly.

In addition, a network system according to an embodiment of the present invention includes a plurality of network terminal devices; A sharing device for performing port forwarding by allocating an IP address and a communication port to a main network terminal device among the plurality of network terminal devices; And a user terminal device connected to the main network terminal device on which the port forwarding has been performed through a network, and receiving data transmitted from the main network terminal device via the sharing device. In response to a data request from a user terminal device, data about any one of the plurality of network terminal devices is transmitted to the user terminal device.

Preferably, the network terminal device is a network camera, and the requested and transmitted data includes image data captured by the network camera.

More preferably, the main network terminal device is any one of the plurality of network terminal devices, and the sub network terminal device is a remaining network terminal device except for the main network terminal device among the plurality of network terminal devices.

More preferably, the main network terminal device transmits a list for the sub network terminal device to the user terminal device according to a request of the user terminal device.

More preferably, the user terminal device displays a list transmitted through the main network terminal device, requests the main network terminal device for data on any one sub-network terminal device included in the list, and the main network terminal device. The network terminal device transmits data on the sub-network terminal device requested by the user terminal device to the user terminal device.

More preferably, the main network terminal apparatus searches for and registers at least one network terminal apparatus existing on a private network, and updates the list at regular intervals.

In addition, the network terminal device according to an embodiment of the present invention includes a first communication unit for communicating with the user terminal device through the IP and communication port assigned through the sharing device; A second communication unit for communicating with other network terminal devices located around the periphery; And a controller configured to receive data of another network terminal device requested by the user terminal device through the second communication unit, and to control the received data to be transmitted to the user terminal device through the first communication unit.

Preferably, the apparatus further includes a storage unit for storing a list of other network terminal devices located in the vicinity, and the controller searches for and registers another network terminal device located in the list, and stores the list in the storage unit. .

More preferably, the controller transmits the stored list to the user terminal device, and transmits data of another network terminal device selected from the transmitted list to the user terminal device.

More preferably, another network terminal device located in the periphery is a terminal device in which port forwarding is not performed with the sharing device.

More preferably, the camera unit further comprises an image sensor for converting the input image data into digital image data, and an image encoder for compressing the digital image data converted by the image sensor.

According to an embodiment of the present invention, the main network terminal device forms a list of other network terminal devices, and connects the data obtained by the other network terminal device to view the data obtained by using the configured list. There is an effect of improving the ease of use by solving the inconvenience of having to perform port forwarding for accessing the other network terminal device.

1 is a schematic structural diagram of a network system according to an embodiment of the present invention.
2 is a block diagram of a network terminal device according to an embodiment of the present invention.
3 is a diagram illustrating a list of network terminal devices provided according to an embodiment of the present invention.
4 and 5 are flowcharts illustrating step-by-step method of the port forwarding method according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

1 is a schematic structural diagram of a network system according to an embodiment of the present invention.

Referring to FIG. 1, a network system includes a plurality of network terminal devices 100, a sharing device 200, and a user terminal device 300.

The plurality of network terminal devices 100 may include a first network terminal device 100 # 1, a second network terminal device 100 # 2, and an Nth network terminal device 100 # N.

The plurality of network terminal devices 100 may include a network service device using the Internet such as a network camera, an internet phone, a web hard drive, a card reader, and may include all devices that can be connected to a network to be developed in the future.

In the embodiment according to the present invention, it will be described on the assumption that the network terminal device 100 is composed of a network camera. However, the network terminal device 100 may be configured as any one of the above-described devices other than the network camera.

The network terminal device 100 receives an IP and a communication port to be used for data communication from the sharing device 200 and performs data communication using the assigned IP and communication port.

In this case, the network terminal device 100 is classified into a main network terminal device and a sub network terminal device.

The main network terminal device is a terminal device to which an IP and a communication port are allocated from the sharing device 200, and the sub network terminal device is a terminal device to which an IP and communication port are not allocated from the sharing device 200.

In other words, the main network terminal device is a device that has performed port forwarding with the sharing apparatus 200, and the sub network terminal device is a device that has not performed port forwarding with the sharing apparatus 200.

Accordingly, the main network terminal device can directly communicate with the user terminal device 300 described later using the assigned IP and communication port, but the sub network terminal device allocates the IP and communication port to be used for data communication. Since it has not been received, direct data communication with the user terminal device 300 is impossible.

Accordingly, in the embodiment according to the present invention, only the main network terminal apparatus performs direct data communication with the user terminal apparatus 300 via the sharing apparatus 200, and the remaining sub network terminal apparatuses perform the main network terminal. Data communication with the user terminal 300 is performed via the device and the sharing device 200. Preferably, the sub network terminal device transmits the data acquired by the sub network terminal device to the main network terminal device, and the main network terminal device transmits the data transmitted from the sub network terminal device to the allocated IP and communication port. This request is retransmitted to the user terminal device 300.

The sharing device 200 performs a function of connecting the plurality of network terminal devices with each other when a plurality of network terminal devices intend to share and use one IP address.

That is, the sharing device 200 enters the IP sharer setting menu and allows port forwarding of the communication port number used by the network terminal device 100 to allow external access of the network terminal device 100 connected to the network. do.

For example, when the network terminal device 100 uses 193.168.1.10 as the private IP address and the communication port number is 7070 port, the port forwarding function of the sharing device 200 setting menu is as follows. You can forward it.

Port forwarding

192.168.1.10 port: 7070

As described above, when the port forwarding is executed, even when the network terminal device 100 is installed in the private network through the sharing device 200, the user may use the user terminal device 300 to access the network terminal from the outside through the network. Connection to device 100 is possible.

In this case, in general, the port forwarding should be performed for all network terminal devices existing on the current network, but the present invention executes only one network terminal device among all network terminal devices existing on the current network. .

To this end, in an embodiment according to the present invention, any one of the network terminal devices existing in the network is set as the main network terminal device, and accordingly port forwarding is performed only for the device configured as the main network terminal device. Run

The user terminal device 300 is a device for viewing data acquired by the network terminal device 100 existing on the network, and may be included in the device if the device is accessible to the network. For example, the user terminal device 300 may include a computer terminal including a computer, a PDA, a mobile phone, etc., as well as a phone terminal including a general telephone, another network device, a video telephone, an internet telephone, and the like.

The Internet may refer to a service provided by an Internet service computer such as ADSL, VDSL, or the like, which is usually used at home.

The user terminal device 300 may access the main network terminal device on which the port forwarding has been performed, and thus may view data acquired by the main network terminal device.

In this case, since the port forwarding is not performed in the sub network terminal devices, the user terminal device 300 cannot directly view data of the sub network terminal devices.

Accordingly, the user terminal device 300 according to an embodiment of the present invention requests the main network terminal device to transmit a data of a specific sub network terminal device, and accordingly, the user terminal device 300 requests the data of the sub network terminal device through the main network terminal device. Allow data to be sent.

This will be described in more detail below.

2 is a block diagram of a network terminal device according to an embodiment of the present invention.

Although FIG. 2 may be any one of the plurality of network terminal apparatuses 100, the network terminal apparatus 100 illustrated in FIG. 2 will be described as an example of the main network terminal apparatus.

Referring to FIG. 2, the network terminal device 100 includes an image sensor 101, an image encoder 102, a storage unit 103, a first communication unit 105, a second communication unit 105, and a control unit 106. Include.

The image sensor 101 receives image information, and thus converts the received image information into digital image information.

The image encoder 102 compresses the digital image information converted by the image sensor 101.

The storage unit 103 stores various information necessary for the operation of the network terminal device and information generated during the operation of the network terminal device.

In particular, the storage unit 103 stores a list of other network terminal devices located around.

The first communication unit 104 performs data communication with the user terminal device 300 using the IP and the communication port allocated from the sharing device 200 during the port forwarding process.

The second communication unit 105 performs data communication with other network terminal devices located around.

The control unit 106 controls the overall operation of the network terminal device.

In particular, the control unit 106 stores the IP and the communication port assigned in the port forwarding process, and thus data communication can be performed using the assigned IP and communication port.

In addition, when data of another network device on which port forwarding is not executed is requested from the user terminal device 300, the controller 106 obtains data of the other network device, and accordingly the data of the obtained other network terminal device. Transmits to the user terminal device 300.

To this end, the controller 106 searches for other network devices located in the vicinity, and accordingly stores the searched network devices in a list. Thereafter, if there is a data request from the user terminal device, the controller 106 transmits the configured list to the user terminal device 300.

In addition, when any one network terminal apparatus is selected from the transmitted list, the controller 106 performs data communication with the selected network terminal apparatus and acquires data obtained from the network terminal apparatus through the second communication unit 105. To be provided.

In addition, the control unit 106 retransmits the data provided through the second communication unit 105 to the user terminal device 300 through the allocated IP and communication port.

As such, the network terminal device (main network terminal device on which port forwarding has been executed) according to the present invention may generate data of another network terminal device (another network terminal device on which port forwarding is not executed) according to a request of the user terminal device 300. Obtains and transmits the obtained data to the user terminal device 300.

For example, when the first to sixth network terminal device exists on the network as described above, and the first network terminal device is set as the main network terminal device and port forwarding is executed, the user terminal device 300 is The first network terminal device set as the main network terminal device is preferentially connected. Thereafter, the first network terminal device provides the user terminal device with a list of other network terminal devices, that is, second through sixth network terminal devices located around the user terminal device 300 according to the connection of the user terminal device 300.

Accordingly, as shown in FIG. 3, the user terminal device 300 may display a list transmitted from the first network terminal device and select one specific network terminal device to be checked by the user terminal device 300. The first network terminal device obtains data about a specific network terminal device selected from the user terminal device 300 and transmits the data to the user terminal device 300.

As described above, according to an exemplary embodiment of the present invention, the main network terminal device forms a list of other network terminal devices, and connects the data obtained from the other network terminal devices using the configured list. By doing so, the inconvenience of having to perform port forwarding for accessing the other network terminal device can be improved.

4 and 5 are flowcharts illustrating step-by-step method of the port forwarding method according to an embodiment of the present invention.

First, referring to FIG. 4, the sharing apparatus 200 checks the network terminal apparatus 100 currently existing on the network (step 410).

In this case, various types of devices may be included in the network terminal device. In the embodiment of the present invention, it is assumed that the network terminal device is a network camera. However, the network terminal device may be another device other than the network camera.

Thereafter, the sharing device 200 sets one specific network terminal device among the plurality of network terminal devices 100 existing on the current network as the main network terminal device (step 420).

In this case, the main network terminal device may be arbitrarily designated by the sharing device 200 itself among the plurality of network terminal devices, or may be designated by the user through the user terminal device 300.

When the main network terminal device is designated in the above, the sharing device 200 performs a port forwarding operation for the main network terminal device.

To this end, the sharing device 200 first allocates an IP address to the main network terminal device (step 430).

Thereafter, the sharing device 200 sets a communication port for data communication in the main network terminal device (step 440).

That is, the IP address and communication port used by the main network terminal device for data communication are set, and port forwarding corresponding to the main network terminal device is executed.

Next, as illustrated in FIG. 5, the user terminal device 300 accesses the main network terminal device on which port forwarding is performed as described above, and requests data for a specific network terminal device (step 510).

That is, the user terminal device 300 accesses the main network terminal device and receives a list of other sub network terminal devices located in the vicinity of the main network terminal device. In addition, the user terminal device 300 may request the main network terminal device for data obtained from the selected network terminal device by selecting any one specific network terminal device included in the provided list. In this case, the user terminal device 300 may request data for the main network terminal device as well as data for the sub network terminal device.

As described above, when a specific network terminal device is selected in the user terminal device 300 and requests data for the selected network terminal device, the main network terminal device requests a data transmitted through the user terminal device 300. Receive the signal. In this case, the data request signal may include device information on the network terminal selected by the user terminal.

The main network terminal checks whether the received request signal is a signal for requesting its own data (step 520).

As a result of the determination (step 520), if the request signal is a signal for requesting its own data, the main network terminal device determines the allocated IP and communication port for data acquired by itself, that is, image data photographed by itself. In step 530, the user terminal 300 transmits the data to the user terminal device 300.

In operation 520, if the request signal is not a signal for requesting its own data, the main network terminal device identifies other sub-network terminal devices currently located around it (step 540).

Thereafter, the main network terminal device determines whether there is a sub-network terminal device providing data requested by the user terminal device among the checked sub-network terminal devices (step 550).

That is, the main network terminal device determines whether the sub network terminal device selected by the user terminal device exists in the checked sub network terminal device.

Thereafter, the main network terminal device transmits an error message to the user terminal device 300 when the sub network terminal device selected by the user terminal device does not exist among the checked sub network terminal devices (step 560).

In operation 570, the main network terminal apparatus transmits a data request signal to the corresponding sub network terminal apparatus when the sub network terminal apparatus selected by the user terminal apparatus 300 exists among the checked sub network terminal apparatuses.

Thereafter, the main network terminal device receives data transmitted from the sub network terminal device by the request signal, and transmits the data transmitted from the sub network terminal device through the allocated IP and communication port to the user terminal device 300. Retransmit) (step 580, 590).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications other than those described above are possible. For example, each component shown in detail in the embodiment of the present invention may be modified. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

100: network terminal device
200: shared device
300: user terminal device

Claims (18)

Dividing a plurality of network terminal devices located on a private network into a main network terminal device and a sub network terminal device;
Executing port forwarding by allocating an IP and a communication port to the divided main network terminal devices;
Requesting the main network terminal device for data on a plurality of network terminal devices including the main network terminal device and the sub network terminal device; And
And receiving data transmitted from the main network terminal device by the request. The method of claim 1,
The network terminal device is a network camera,
And the data comprises image data. The method of claim 1,
The main network terminal device is any one of the plurality of network terminal devices,
The sub network terminal device is a port forwarding setting method, characterized in that the remaining network terminal device other than the main network terminal device of the plurality of network terminal devices. The method of claim 1,
And receiving a list of the sub network terminal device from the main network terminal device. 5. The method of claim 4,
Displaying the received list; And
The method may further include selecting one of the sub network terminal devices from the displayed list.
Requesting the data
Requesting data provided by the selected sub-network terminal device. 5. The method of claim 4,
The main network terminal device searches for at least one sub network terminal device existing on a private network, and stores a list of the searched sub network terminal device. The method according to claim 6,
And the main network terminal periodically re-scans the sub network terminal and updates the stored list accordingly. A plurality of network terminal devices;
A sharing device for classifying the plurality of network terminal apparatuses into a main network terminal apparatus and a sub network terminal apparatus, and performing port forwarding by allocating an IP address and a communication port to the main network terminal apparatus; And
A user terminal device connected to the main network terminal device on which the port forwarding has been performed through a network, and receiving data transmitted from the main network terminal device via the sharing device;
The main network terminal device transmits data for at least one network terminal device among a plurality of network terminal devices including the main network terminal device and a sub network terminal device to the user terminal device according to a data request of the user terminal device. Network system. The method of claim 8,
The network terminal device is a network camera,
The request and the data to be transmitted includes a network data captured by the network camera. The method of claim 8,
The main network terminal device is any one of the plurality of network terminal devices,
The sub network terminal device is a network system, characterized in that the remaining network terminal device other than the main network terminal device of the plurality of network terminal devices. The method of claim 10,
The main network terminal device transmits a list of the sub-network terminal device to the user terminal device at the request of the user terminal device. 12. The method of claim 11,
The user terminal device displays a list transmitted through the main network terminal device, requests the main network terminal device for data on any one sub-network terminal device included in the list,
The main network terminal device transmits data about the sub network terminal device requested by the user terminal device to the user terminal device. 12. The method of claim 11,
The main network terminal device searches for and registers at least one network terminal device existing on a private network in a list, and updates the list at regular intervals. A first communication unit configured to communicate with a user terminal device through an IP and a communication port allocated through a sharing device;
A second communication unit which communicates with other network terminal devices located in the vicinity; And
And a controller configured to receive data of another network terminal device requested by the user terminal device through the second communication unit and to transmit the received data to the user terminal device through the first communication unit.
The other network terminal device located in the periphery is a network device that has not performed port forwarding with the sharing device. The method of claim 14,
A storage unit for storing a list for the other network terminal devices located in the vicinity is further included.
The control unit searches for other network terminal devices located in the vicinity, registers the list, and stores the list in the storage unit. 16. The method of claim 15,
The controller transmits the stored list to the user terminal device, and transmits data of another network terminal device selected from the transmitted list to the user terminal device. delete The method of claim 14,
And a camera unit including an image sensor for converting input image data into digital image data, and an image encoder for compressing the digital image data converted by the image sensor.

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