KR20130128748A - Relay apparatus - Google Patents

Relay apparatus Download PDF

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Publication number
KR20130128748A
KR20130128748A KR1020120052724A KR20120052724A KR20130128748A KR 20130128748 A KR20130128748 A KR 20130128748A KR 1020120052724 A KR1020120052724 A KR 1020120052724A KR 20120052724 A KR20120052724 A KR 20120052724A KR 20130128748 A KR20130128748 A KR 20130128748A
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KR
South Korea
Prior art keywords
relay device
communication
network
power
communication path
Prior art date
Application number
KR1020120052724A
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Korean (ko)
Inventor
이두영
Original Assignee
엘지이노텍 주식회사
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Publication date
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to KR1020120052724A priority Critical patent/KR20130128748A/en
Publication of KR20130128748A publication Critical patent/KR20130128748A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

The relay device according to the embodiment may include: a first relay device installed between a first heterogeneous network to form a first communication path for relaying communication signals between the first heterogeneous networks; And a second relay device provided between a second heterogeneous network to form a second communication path for relaying communication signals between the second heterogeneous networks, wherein the first communication path includes a base station and a first network. A second communication path is formed between the devices, and the second communication path is formed between the first relay device and the second network device.

Description

Relay device {RELAY APPARATUS}

The embodiment relates to a relay device, and more particularly, to a relay device serving as an intermediary capable of connecting to an Ethernet port.

In order to provide wireless Internet to a WLAN terminal, a relay device (also referred to as a wireless router) that connects to a WLAN terminal through a wireless link and an internet or a WiBro network connected to the relay device via a wired or wireless connection are required.

The Wireless Broadband Internet (WiBro) is a wireless Internet technology using a 2.3 GHz to 2.4 GHz band developed in Korea, and has been in the spotlight as one of the next generation wireless communication technologies with adoption as a world standard.

WiBro networks enable users to use wireless data communications anytime, anywhere, anytime, anywhere.

At this stage, the prevalence of WiBro networks is started, and the prevalence of WiBro terminals that can be directly connected to WiBro networks is not high. In the current wireless Internet type, it is common for wireless LAN terminals to access WiBro networks through relay devices.

The embodiment enables the Ethernet port to be connected to another desk-top or gateway to a pedestal through which the relay device is used so that an Ethernet application can be used.

The technical problems to be solved by the embodiments are not limited to the technical problems mentioned above, and other technical problems which are not mentioned are obviously understood by those skilled in the art to which the embodiments proposed from the following description belong, .

The relay device according to the embodiment may include: a first relay device installed between a first heterogeneous network to form a first communication path for relaying communication signals between the first heterogeneous networks; And a second relay device provided between a second heterogeneous network to form a second communication path for relaying communication signals between the second heterogeneous networks, wherein the first communication path includes a base station and a first network. A second communication path is formed between the devices, and the second communication path is formed between the first relay device and the second network device.

The first heterogeneous network includes a first wireless network and a second wireless network, and the second heterogeneous network includes the first wireless network and a wired network.

The first wireless network may include a WiBro network, the second wireless network may include a wireless LAN network, and the wired network may include an Ethernet network.

In addition, the first relay device is connected to the base station, the first communication module for communicating with the base station, the first network device formed in the first communication path, and the connected first network device and A second communication module performing communication, a first signal conversion unit converting the communication signal according to a communication scheme between the first communication module and the second communication module, and the second relay device, And a first control unit for communicating with a second relay device, a first control unit for controlling operations of the first and second communication modules, and a first signal conversion unit.

The first relay apparatus may further include a charging unit having a battery therein and supplying driving power to each component included in the first relay apparatus using the power charged in the battery.

The first relay apparatus further includes a display unit that displays operation state information of the first relay apparatus.

The first control unit may output the received communication signal to the second communication module based on a destination of the communication signal received through the first communication module, or the second communication module through the first communication interface unit. Output to the relay device.

The second relay apparatus may further include a second communication interface unit connected to the first communication interface unit to receive a communication signal transmitted through the first relay device, and a second network formed in the second communication path. A communication port connected to the device and communicating with the connected second network device, a second signal converter converting the communication signal according to a communication method between the second communication interface unit and the third communication module; The power supply port receives power from the outside and supplies driving power to each component included in the second relay device using the supplied power, and the operation of each component constituting the second relay device. And a second control unit for controlling.

The communication port also includes an Ethernet port connected to a second network device formed in the second communication path by an Ethernet cable.

The first and second communication interface units may include a data line for transmitting / receiving the communication signal and a power line for supplying power, and the second control unit may be provided from the power supply port through the power line. The supplied power is supplied to the first relay device, and the charging unit charges an internal battery based on the power supplied through the power line.

In addition, the first control unit selectively transmits a charge request signal to the second relay device according to the charge amount of the battery included in the charging unit.

On the other hand, the relay device according to the embodiment includes a body forming an appearance; And a pedestal for mounting the body, wherein the body is provided with a first relay device for forming a first communication path between the first heterogeneous networks, and the pedestal has a second communication path between the second heterogeneous networks. It includes a second relay device for forming a.

The pedestal is also provided with a communication port for forming the second communication path between the second relay device and the network device.

In addition, the communication port includes an Ethernet port.

The pedestal is also provided with a power supply port for supplying driving power to the second relay device.

In addition, between the body and the pedestal, a power cable for supplying power supplied through the power supply port to the first relay device provided in the body to charge the internal battery is formed.

In addition, the power cable includes a USB (Universal Serial Bus) standard cable.

The first heterogeneous network includes a first wireless network and a second wireless network, and the second heterogeneous network includes a first wireless network and a wired network formed by the first relay device.

According to the embodiment, by configuring a communication port that can form a communication path different from the communication path formed in the relay device on the pedestal of the relay device, it is possible to configure the network more efficiently, the desk-top or gateway to the communication port You can easily connect to Ethernet applications.

1 is a diagram illustrating a network system according to an exemplary embodiment.
2 is a view for explaining the external structure of the relay apparatus according to the embodiment.
FIG. 3 is a diagram for explaining an internal configuration of the first relay device shown in FIG. 2.
4 is a view for explaining an internal configuration of the second relay device shown in FIG. 2.
5 is a flowchart illustrating a method of relaying a relay device according to an embodiment step by step.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out 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.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, except to exclude other components unless otherwise stated.

1 is a diagram illustrating a network system according to an exemplary embodiment.

Referring to FIG. 1, a network system includes a base station (BTS) 100, a relay device 200, and a network device 300.

The base station (BTS) BASE STATION TRANSCEIVER (BTS) 100 performs a connection for data communication to a predetermined network device 300.

The relay device 200 is installed between heterogeneous networks, and relays the network device 300 to receive a wireless Internet service through the base station 100.

In this case, the heterogeneous network may include a first heterogeneous network including a first wireless network and a second wireless network, and a second heterogeneous network including a first wireless network and a wired network.

Specifically, the first wireless network may be a WiBro network, the second wireless network may be a wireless LAN, and the wired network may be an Ethernet network.

However, the types of the first and second wireless networks and the wired network are only exemplary embodiments, but need not be limited thereto.

Hereinafter, for convenience of explanation, it will be assumed that the first wireless network is a WiBro network, the second wireless network is a wireless LAN, and the wired network is configured as an Ethernet network.

Preferably, the relay device 200 is installed between the first heterogeneous network, and is installed between the first relay device 210 serving as a relay for the wireless Internet service and a second heterogeneous network. It includes a second relay device 220 to serve as a relay for.

In this case, the second relay device 220 is installed between the second heterogeneous network including a communication path formed by the first relay device 210 through data communication with the first relay device 210.

The network device 300 may include a desktop computer, a notebook computer, a gateway, a tablet computer, an internet phone, a television, and a terminal. In this case, the terminal may include a mobile phone, a smart phone, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, and the like.

That is, the network device 300 may include all terminals having a means for connecting to a wireless LAN or an Ethernet network.

Accordingly, the relay device 200 receives the Internet data in the WiBro network and transfers the data to the network device 300 so that the network device 300 equipped with the wireless LAN enables the Internet wirelessly.

In addition, the relay device 200 receives the Internet data in the WiBro network and transmits the data to the network device 300 through an Ethernet network, and the network device 300 connected to the relay device 200 through an Ethernet cable. ) To enable wired internet.

2 is a view for explaining the external structure of the relay apparatus according to the embodiment.

Referring to FIG. 2, the relay device 200 includes a first relay device 210 and a second relay device 220.

The first relay device 210 is a general router.

More specifically, the first relay device 210 is the body of the router, the component is configured in the body for the connection between the first heterogeneous network.

The second relay device 220 is a cradle of the first relay device 210.

That is, the second relay device 220 is a cradle capable of mounting the first relay device 210, and the inside of the cradle includes components for connection between the second heterogeneous networks.

When the second relay device 220 mounts a mobile router (first relay device) at home, the second relay device 220 serves as a medium for connecting the other network device 300 as well as a pedestal for fixing the mobile router. .

FIG. 3 is a diagram for explaining an internal configuration of the first relay device shown in FIG. 2.

Referring to FIG. 3, the first relay device 210 may include a first communication module 211, a first signal converter 212, a second communication module 213, a first storage unit 214, and a display unit 215. ), A charging unit 216, a first communication interface unit 217, and a first control unit 218.

The first communication module 211 is connected to the base station 100 to transmit and receive data with the base station 100.

In this case, the first communication module 211 may be connected to a WiBro network to transmit and receive data through the WiBro network. The WiBro network may include a base station for providing an Internet service to the network device 300. Alternatively, the WiBro network may include a WiBro terminal.

The first signal converter 212 performs a function of converting data to be transmitted through the first communication module 211 or data received through the first communication module 211.

For example, the first signal converter 212 converts the data of the WiBro method transmitted through the base station 100 into data of a wireless LAN method.

In addition, the first signal converter 212 converts the data of the wireless LAN method provided through the second communication module 213, which will be described later, into the data of the WiBro method.

The second communication module 213 is wirelessly linked with the network device 300 to transmit and receive data with the network device 300.

The network device 300 includes a desktop computer, a notebook computer, a gateway, a tablet computer, an Internet phone, a television, and a terminal, wherein the terminal is a mobile phone, a smart phone, a digital broadcasting terminal, a personal digital assistant (PDA). Digital Assistants (PMP), Portable Multimedia Player (PMP), navigation, etc. may be included, and all terminals having a means for accessing the wireless LAN may be included.

The second communication module 213 applied to the embodiment is a wireless LAN communication module, which may also be referred to as a Wi-Fi (Wireless Fidelity) communication module.

The first storage unit 214 is a driving operating system program, various application programs, information required for communicating with the network device 300 and the base station 100, respectively (for example, channel information, IP address (IP) Address) information is stored.

The first storage unit 214 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (eg, SD or XD memory, etc.). ), RAM, or ROM (EEPROM, etc.) may include at least one type of storage medium.

The display unit 215 displays operation state information of the first relay device 210.

For example, the display unit 215 may display information indicating that data communication is performed by the first relay device 210.

The display unit 215 may include a display panel such as a PDP, an LCD, an OLED, a flexible display, or the like.

In addition, the display unit 215 may be configured of a plurality of light emitting devices having different colors, and the display unit 215 may display the information by driving a light emitting device having a color corresponding to an operating state of the first relay device 210. have.

That is, the display unit 215 may be configured of a plurality of light emitting devices that display operation state information such as whether or not the power supply of the first relay device 210 is supplied, or a battery charging state, a network connection state, and an operation channel.

The charging unit 216 includes a battery therein, charges the battery using power supplied from the outside, and supplies driving power to each component constituting the first relay device 210 by discharging the battery. Supply.

The first communication interface unit 217 is connected to the second relay device 220 to transmit data to the second relay device 220 or to receive data transmitted through the second relay device 220. .

In this case, the line included in the first communication interface unit 217 includes a data line for transmitting / receiving the data and a power line for receiving charging power of the battery included in the charging unit 216.

The first communication interface unit 217 is preferably configured as a universal serial bus (USB) port.

The first control unit 218 controls the overall operation of the first relay device 210.

For example, the first control unit 218 converts the data received from the at least one network device 300 connected through the second communication module 213 into data that can be transmitted to the base station 100, The converted data is transmitted to the base station 100 through the first communication module 211.

In addition, the first controller 218 controls the converted data to be transmitted to the network device 300 so that the data received from the base station 100 is converted into data that can be transmitted to the network device 300. .

In addition, the first controller 218 may be configured to transmit and receive IP addresses to the plurality of network devices 300 such that a plurality of network devices 300 may be simultaneously connected through the second communication module 213. Functions such as scheduling of data can be performed.

In addition, the first control unit 218 confirms the destination of the data received through the first communication module 211 and controls the movement path of the received data according to the confirmed destination.

For example, if the destination of the data received through the first communication module 211 is the network device 300 connected through the second communication module 213, the first control unit 218 may be configured to receive the received data. It is input to the second communication module 213.

Alternatively, if the destination of the data received through the first communication module 211 is the network device 300 connected to the Ethernet port of the second relay device 220, the first control unit 218 may receive the received data. The second communication device 220 is transmitted to the second relay device 220 through the first communication interface unit 217.

In addition, the first controller 218 may determine the state of the charging unit 216 and transmit a charge request signal to the second relay device 220 according to the determined state.

That is, the first controller 218 transmits a charge request signal to the second relay device 220 when the amount of charge of the battery included in the charger 216 is less than or equal to a predetermined reference value, and accordingly, the second relay device. The battery is charged by the charging power supplied through 220.

4 is a view for explaining an internal configuration of the second relay device shown in FIG. 2.

Referring to FIG. 4, the second relay device 220 may include a second communication interface unit 221, a second signal converter 222, a communication port 223, a second storage unit 224, and a power supply port ( 225 and a second control unit 226.

The second communication interface unit 221 is connected to the first relay device 210 to transmit data to the first relay device 210 or to receive data transmitted through the first relay device 210. .

Substantially, the second communication interface unit 221 is connected to the first communication interface unit 217 provided in the first relay device 210.

In this case, the line included in the second communication interface unit 221 includes a data line for transmitting / receiving the data and a power line for supplying charging power of a battery included in the first relay device 210. do.

The second communication interface unit 221 is preferably configured as a universal serial bus (USB) port.

The second signal converter 222 converts data to be transmitted to the first relay device 210 through the second communication interface 221 or data received through the second communication interface 221. It performs a function.

For example, the second signal converter 222 converts the WiBro-type data received through the first communication module 211 of the first relay device 210 into Ethernet-type data.

In addition, the second signal converter 222 converts Ethernet type data received through the communication port 223 to be described later into WiBro type data.

The communication port 223 transmits and receives data with the network device 300 through an Ethernet cable.

The communication port 223 may be an Ethernet port, for example RJ 45, and may be configured in plurality.

The network device 300 includes a desktop computer, a notebook computer, a gateway, a tablet computer, an Internet phone, a television, and a terminal, wherein the terminal is a mobile phone, a smart phone, a digital broadcasting terminal, a personal digital assistant (PDA). Digital Assistants (PMP), Portable Multimedia Player (PMP), navigation, etc. may be included, and all terminals having a means capable of being connected to the communication port 223 through the above Ethernet cable may be included.

Further, preferably, the network device 300 connected to the communication port 223 is a computer, a notebook or a gateway.

The second storage unit 224 is a driving operating system program, various application programs, information required to communicate with the network device 300 and the first relay device 210 (for example, channel information, IP address information is stored.

The second storage unit 224 may include a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (eg, SD or XD memory, etc.). ), RAM, or ROM (EEPROM, etc.) may include at least one type of storage medium.

The power supply port 225 receives power from the outside and supplies driving power to each component constituting the second relay device 220 using the supplied power.

In addition, the power supply port 225 is connected to the second communication interface 221 to supply the power to the first relay device 210 under the control of the second control unit 226 which will be described later.

The second control unit 226 controls the overall operation of the second relay device 220.

For example, the second control unit 226 converts the data received from the at least one network device 300 connected through the communication port 223 into data that can be transmitted to the base station 100, and converts the data. The processed data is transmitted to the first relay device 210 through the second communication interface unit 221.

In addition, the second control unit 226 converts the data received from the first relay device 210 into data that can be transmitted to the network device 300, and the converted data is converted into the network device 300. Control to be sent).

In addition, the second controller 226 may be configured to allocate IP addresses to the plurality of network devices 300 and to transmit / receive data so that the plurality of network devices 300 may be simultaneously connected through the communication port 223. Functions such as scheduling can be performed.

In addition, the second control unit 226 is the power supplied through the power supply port 225 in accordance with the charging signal requested through the first relay device 210 through the second communication interface unit 221 To be transmitted to the first relay device 210.

According to the embodiment, by configuring a communication port that can form a communication path different from the communication path formed in the relay device on the pedestal of the relay device, it is possible to configure the network more efficiently, the desk-top or gateway to the communication port You can easily connect to Ethernet applications.

5 is a flowchart illustrating a method of relaying a relay device according to an embodiment step by step.

Referring to FIG. 5, the first relay device 210 forms a first communication path (step 101).

That is, the first relay device 210 is installed between the base station 100 and the network device 300 to form a first communication path using a WiBro and a wireless LAN method.

The second relay device 220 forms a second communication path (step 102).

That is, the second relay device 220 is installed between the first relay device 210 and the network device 300 to form a second communication path by WiBro and Ethernet.

Thereafter, the first relay device 210 receives a communication signal transmitted through the base station 100 (step 103).

When the communication signal is received, the first relay device 210 confirms the destination of the received communication signal, and accordingly the destination is a network device disposed on the first communication path or the second communication path. In operation 104, it is determined whether the network device is disposed on the network device.

As a result of the determination (step 104), if the destination of the communication signal is a network device arranged on a first communication path, the first relay device 210 may use a protocol for using the received communication signal on the first communication path. The signal is converted to the corresponding signal (step 105).

That is, the first relay device 210 converts the received WiBro communication signal into a wireless LAN communication signal and transmits the converted communication signal to a network device corresponding to the destination.

On the other hand, if it is determined in step 104 that the destination of the communication signal is a network device disposed on the second communication path, the first relay device 210 transmits the received communication signal to the second relay device 220. Deliver (step 106).

Thereafter, the second relay device 220 converts the received communication signal into a signal corresponding to a protocol used on the second communication path (step 107).

That is, the second relay device 220 converts the received WiBro communication signal into an Ethernet communication signal and transmits the converted communication signal to a network device corresponding to the destination.

Thereafter, the second relay device 220 checks whether the second communication path is used or is waiting for communication (step 108).

Alternatively, the second relay device 220 determines whether the charge request signal is transmitted from the first relay device 220.

As a result of the determination, if the communication is in the standby state or the charge request signal is transmitted, the second relay device forms a path for supplying power to the first relay device 210 (step 109).

Thereafter, the second relay device 220 supplies power to the first relay device 210 (step 110).

The first relay device 210 charges an internal battery using power supplied through the second relay device 220 (step 111).

According to the embodiment, by configuring a communication port that can form a communication path different from the communication path formed in the relay device on the pedestal of the relay device, it is possible to configure the network more efficiently, the desk-top or gateway to the communication port You can easily connect to Ethernet applications.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: base station
200: repeater
210: first relay device
211: first communication module
212: first signal conversion unit
213: second communication module
214: first storage unit
215: display unit
216: live part
217: first communication interface unit
218: first control unit
220: second relay device
221: second communication interface unit
222: second signal conversion unit
223: communication port
224: second storage unit
225: power supply port
226: second control unit
300: network device

Claims (18)

A first relay device disposed between first heterogeneous networks to form a first communication path for relaying communication signals between the first heterogeneous networks; And
A second relay device installed between a second heterogeneous network to form a second communication path for relaying communication signals between the second heterogeneous networks,
The first communication path is,
Formed between the base station and the first network device,
The second communication path is,
A relay device formed between the first relay device and the second network device. The method of claim 1,
The first heterogeneous network is,
A first wireless network and a second wireless network,
The second heterogeneous network,
A relay device including the first wireless network and a wired network. The method of claim 2,
The first wireless network includes a WiBro network,
The second wireless network includes a wireless LAN network,
The wired network, the relay device comprising an Ethernet network. The method of claim 1,
The first relay device,
A first communication module connected to the base station and communicating with the base station;
A second communication module connected to a first network device formed in the first communication path and communicating with the connected first network device;
A first signal converter converting the communication signal according to a communication method between the first communication module and the second communication module;
A first communication interface connected to the second relay device to communicate with the second relay device;
And a first controller configured to control operations of the first and second communication modules and the first signal converter. 5. The method of claim 4,
The first relay device,
And a charging unit having a battery therein and supplying driving power to each component included in the first relay device by using the power charged in the battery. 5. The method of claim 4,
The first relay device,
And a display unit for displaying operation state information of the first relay device. 5. The method of claim 4,
The first control unit,
The relay device outputs the received communication signal to the second communication module or the second communication device through the first communication interface unit based on the destination of the communication signal received through the first communication module. 6. The method of claim 5,
The second relay device,
A second communication interface unit connected to the first communication interface unit to receive a communication signal transmitted through the first relay device;
A communication port connected to a second network device formed in the second communication path and communicating with the connected second network device;
A second signal conversion unit converting the communication signal according to a communication method between the second communication interface unit and the third communication module;
A power supply port that receives power from an external source and supplies driving power to each component included in the second relay device using the supplied power;
And a second control unit controlling an operation of each component constituting the second relay device. The method of claim 8,
The communication port,
And an Ethernet port connected to a second network device formed in the second communication path by an Ethernet cable. The method of claim 8,
The first and second communication interface unit,
A data line for transmitting / receiving the communication signal;
It includes a power line for power supply,
Wherein the second control unit comprises:
Supplying power supplied from the power supply port through the power line to the first relay device,
The charging unit includes:
A relay device for charging an internal battery based on power supplied through the power line. The method of claim 10,
The first control unit,
The relay device for selectively transmitting a charge request signal to the second relay device in accordance with the charge amount of the battery provided in the charging unit. A body forming an appearance; And
A pedestal for mounting the body,
In the body,
A first relay device is provided that forms a first communication path between the first heterogeneous networks,
On the pedestal,
And a second relay device for forming a second communication path between the second heterogeneous networks. 13. The method of claim 12,
On the pedestal,
And a communication port for forming the second communication path between the second relay device and the network device. The method of claim 13,
The communication port,
Relay device that includes an Ethernet port. 13. The method of claim 12,
On the pedestal,
And a power supply port for supplying driving power to the second relay device. 16. The method of claim 15,
Between the body and the pedestal,
And a power cable configured to supply power supplied through the power supply port to a first relay device provided in the body to charge an internal battery. 17. The method of claim 16,
The power cable,
Relay device containing a cable of the Universal Serial Bus (USB) specification. 12. The method of claim 11,
The first heterogeneous network is,
A first wireless network and a second wireless network,
The second heterogeneous network,
A relay device comprising a first wireless network and a wired network formed by said first relay device.
KR1020120052724A 2012-05-17 2012-05-17 Relay apparatus KR20130128748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120052724A KR20130128748A (en) 2012-05-17 2012-05-17 Relay apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120052724A KR20130128748A (en) 2012-05-17 2012-05-17 Relay apparatus

Publications (1)

Publication Number Publication Date
KR20130128748A true KR20130128748A (en) 2013-11-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120052724A KR20130128748A (en) 2012-05-17 2012-05-17 Relay apparatus

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