KR101085115B1 - Internet virtual home network system based on DLNA - Google Patents

Abstract

The present invention relates to a DLNA-based Internet virtual home network system and a networking method using the same. The present invention provides a communication system comprising: a registration relay server which is a server for registering status and information by a DLNA compatible device and a DLNA incompatible device on a home network; A presence relay server that reports a network connection state of the DLNA compatible device and the DLNA non-compliant device, and wherein the DLNA compatible device of the home network informs a method of connecting the external DLNA non-compliant device; A relay relay server which is a server which relays when a direct connection between the DLNA compatible device and the DLNA incompatible device is impossible; A DLNA rendezvous for determining the connection method by querying network environment information of the DLNA noncompliant device registered in the presence relay server when the network is connected for data transmission to the DLNA noncompliant device; And a DLNA agent installed in the DLNA incompatible device, the DLNA agent in charge of communication with the DLNA rendezvous installed in the home network. Characterized in that it comprises a. As a result, the media sharing technology designed and implemented under the home network base such as DLNA provides the effect of operating on the Internet. In addition, by connecting and configuring various computing resources carried not only by the home network but also by the company, school, or mobile, into one virtual home network, these devices are logically formed as if they exist in one sub-network. to provide. In addition, existing DLNA-compatible devices can connect devices spread across the Internet at once, share multimedia, and play on a single logically integrated virtual home network.

Description

Internet virtual home network system based on DLNA

The present invention relates to a home network technology, and more particularly, to a DLNA-based Internet virtual home network system that allows a media sharing technology designed and implemented under a home network such as DLNA to operate on the Internet.

Recently, various digital devices such as digital TV (DTV), digital video camera (DVC), digital versatile disk player (DVDP), digital set-top box have been introduced, and home network construction of these devices has been introduced. For this purpose, the IEEE 1394 standard, which has been approved by the IEEE Committee as a digital network interface, is drawing attention. In general, all home appliances provide a method for allowing a user to operate various functions provided by the home appliance. A representative method is a method using an operation button and a remote controller.

In devices that meet the IEEE1394 standard, control commands are used to control devices. The most representative control command is A / V Control Command and Transaction Set (AV / C CTS).

This method defines a hexadecimal code for each function of the device. For example, the play command for the VCR is defined as "OxC8" in hexadecimal. Currently, in IEEE1394 TA, standardization of all control commands for each device group (eg, VCR group, disk group, camera group, etc.) is in progress.

In the digitalized home network system using the IEEE 1394 network, control between devices will be performed by configuring one device as a control device and a plurality of devices as control devices as target devices. This type of home network system has the following problems. First, one device to be a control device must have all the instruction sets for each target device, thus bringing considerable software and hardware burden. Secondly, the control device does not know commands other than those provided at the time of product release, and thus does not have a control method for the new target device.

Third, it is not easy to provide a graphical user interface (GUI). In other words, the unified GUI form that can be applied to all kinds of devices is inherently difficult to define, and there is a limit in defining the product type.

As a method for solving such a problem, a method has been sought to remove various spatial restrictions in operating various devices and to effectively display various information by employing a web server in devices employing IEEE1394. In this case, an IEEE1394 device having a display device such as a DTV or a PC may have a built-in web browser to generate a device page so that it is easier to control the IEEE1394 device having a web server.

The web server must exist on the IEEE 1394 layer based on the Internet protocol layer, and if so, each of the devices employing the web server must have an Internet protocol address (IP address). However, the home network based on the web browser may be assigned an IP address representatively, but unlike a network such as a general office, it is difficult for each device included in the home network to be assigned a 2 IP address. Since the IP address is finite and is currently assigned to many networks, it will be difficult to obtain an IP address for each of the devices included in the home network. As an alternative to this problem, consider using a virtual IP address only within the home network.

In this case, when a user outside the home network wants to access a device connected to the home network through a computer in an office, that is, a device assigned with a virtual IP, the user uses a domain name address to select the device. There must be a way to process the domain name address to make it accessible.

As such, technologies for controlling and transmitting and receiving data between a home network and an external device are receiving attention. Accordingly, in the technical field, a media sharing technology designed and implemented under a home network such as DLNA can operate on the Internet. There is a need for technology development to ensure this.

In order to solve the above problems, the present invention provides a DLNA-based Internet virtual home network system and a networking method using the same so that the media sharing technology designed and implemented under the home network, such as DLNA can also operate on the Internet It is to.

According to another embodiment of the present invention, by connecting and configuring not only a home network but also various computing resources carried by a company, a school, or a mobile device through a single virtual home network, these devices exist as if they are in one subnetwork. The present invention provides a DLNA-based Internet virtual home network system and a networking method using the same.

According to another embodiment of the present invention, DLNA-compatible devices such as TVs in homes can easily find and connect personal PCs, laptops, servers, etc., which exist in different sub-networks connected to the Internet, just like devices in a local network. The present invention provides a DLNA-based Internet virtual home network system and a networking method using the same for enabling multimedia such as pictures, music, and videos stored therein to be played immediately.

According to another embodiment of the present invention, a DLNA-based device for enabling existing DLNA-compatible devices to connect devices spread across the Internet at once and share multimedia can be played on a single logical home network logically integrated. To provide an Internet virtual home network system and a networking method using the same.

In order to achieve the above object, a DLNA-based Internet virtual home network system according to an embodiment of the present invention is a registration relay, which is a server for registering status and information by a DLNA compatible device and an external DLNA non-compliant device on a home network. server; A presence relay server that reports a network connection state of the DLNA compatible device and the DLNA non-compliant device, and wherein the DLNA compatible device of the home network informs a method of connecting the external DLNA non-compliant device; A relay relay server which is a server which relays when a direct connection between the DLNA compatible device and the DLNA incompatible device is impossible; Network connection for interworking with non-compliant devices in home network or transmitting data to non-compliant devices in home network by making DLNA incompatible or compatible devices in external internet network appear as DLNA compatible devices in local home network. A DLNA rendezvous for determining the connection method by referring to network environment information of the DLNA incompatible device registered in the presence relay server; And a DLNA agent installed in the DLNA incompatible device, the DLNA agent in charge of communication with the DLNA rendezvous installed in the home network. Characterized in that it comprises a.

In the DLNA-based Internet virtual home network system according to another embodiment of the present invention, the registration relay server, all the DLNA compatible or DLNA non-compliant device is registered, grouping devices according to a user criteria or a predetermined scenario To perform an inquiry for the DLNA incompatible devices remotely by the DLNA rendezvous.

In the DLNA-based Internet virtual home network system according to another embodiment of the present invention, the DLNA rendezvous is a program installed in the DLNA compatible device is always connected to the network and is on-line, It is characterized in that it serves to make an external DLNA incompatible device connected to the Internet appear as the DLNA compatible device in the same home network.

In the DLNA-based Internet virtual home network system according to another embodiment of the present invention, the DLNA agent is a device that is installed directly on the DLNA non-compliant device, such as a server or a PC to be installed as a DLNA compatible device, The device information is registered in the relay registration server or the DLNA rendezvous in the remote home network receives a request (Request), collects data from the incompatible device, and then the DLNA rendezvous transmits the desired data. do.

Networking method using a DLNA-based Internet virtual home network system according to an embodiment of the present invention, when the DLNA non-compatible device connected to the Internet (online) is online (online) registers the device information through the pre-installed DLNA agent Registering with the relay server and the presence relay server; A second step of transmitting a find command of the DLNA incompatible device to the registration relay server by using the DLNA rendezvous in which a home TV is located in a home network among DLAN compatible devices of a home network; A third step of the registration relay server returning the DLNA incompatible device information that the registration relay server already has to the DLNA rendezvous; The DLNA rendezvous is a fourth step of sending information received from the registration relay server to the home TV and waiting for a next request; The home TV may include a fifth step of recognizing a PC among the DLNA incompatible devices as a DLNA media server in a local network and transmitting a video playback request; A sixth step in which the DLNA rendezvous receives the video play request, connects the PC directly connected to the Internet using the presence relay server, and acquires the desired video data from the home TV to the home TV; And a seventh step of receiving, by the home TV, the video data from the DLNA rendezvous; Characterized in that it comprises a.

Networking method using a DLNA-based Internet virtual home network system according to another embodiment of the present invention, the home network DLNA compatible camera, the first step of searching for a remote TV that is a DLNA non-compliant device; A second step in which the remote TV registers its TV information in a DLNA rendezvous installed in its home network; A third step of the DLNA rendezvous registering the registered information with a registration relay server and a presence relay server; The request for searching for the DLNA compatible camera is transmitted to the DLNA rendezvous of the local home network where the compatible camera is located, and the DLNA rendezvous inquires the registration relay server and returns registered remote TV information to the DLNA compatible camera. Fourth step; The DLNA compatible camera may further comprise: transmitting photographic data to the remote TV which is an acquired device after acquiring uploadable DMR information; Transmitting the photo data to a DLNA rendezvous in a home network where a camera is located and retransmitting it to a DLNA rendezvous in a home network where a remote TV is located; The network connection between DLNA rendezvous in local and remote home networks is based on the actual network connection information obtained by referring to the Prezone relay server. The data passed through DLNA rendezvous in local and remote home networks is finally transmitted to the remote TV. 7 steps; And an eighth step of the remote TV outputting the data transmitted through the DLNA rendezvous of both the DLNA compatible camera and the relay relay server to the screen. Characterized in that it comprises a.

DLNA-based Internet virtual home network system according to an embodiment of the present invention, the media sharing technology designed and implemented under the home network, such as DLNA provides an effect that can operate on the Internet.

In addition, the DLNA-based Internet virtual home network system according to another embodiment of the present invention, by connecting and configuring a variety of computing resources that individuals carry not only a home network, but also a company, school, or mobile in a single virtual home network It provides the effect that devices form logically as if they exist in one subnetwork.

In addition, the DLNA-based Internet virtual home network system according to another embodiment of the present invention, the personal PC, notebook, server, etc. that exist in different sub-network that DLNA compatible devices such as TV in the home is connected to the Internet It's easy to find and connect like a device on a local network and instantly play multimedia such as photos, music and videos stored in it.

In addition, the DLNA-based Internet virtual home network system according to another embodiment of the present invention, the existing DLNA-compatible devices in a single addressing on a logically integrated virtual home network connects the devices spread over the Internet at once Provides the effect of sharing and playing multimedia.

1 is a diagram showing a DLNA-based Internet virtual home network system according to an embodiment of the present invention.
2 is a diagram illustrating a picture transmission from a digital camera connected to a local home network to a remote TV in a DLNA-based Internet virtual home network system according to an embodiment of the present invention.
3 is a diagram illustrating a virtual DLNA home network configuration of a local home and a remote home network according to another embodiment of the present invention.
4 is a flowchart illustrating a case where a TV of a home, which is a home network, searches for an Internet-connected PC) or a server and plays video data therein according to an embodiment of the present invention.
5 is a flowchart illustrating a case where a digital camera connected to a local home network transmits a picture to a remote TV according to an exemplary embodiment of the present invention.

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted when it is deemed that they may unnecessarily obscure the subject matter of the present invention.

In the present specification, when one component 'transmits' data or a signal to another component, any one component may directly transmit data or a signal to another component, and at least one other component. This means that data or a signal can be transmitted to other components through the APC.

1 is a diagram illustrating a DLNA-based Internet virtual home network system according to an embodiment of the present invention. Referring to FIG. 1, a DLNA-based Internet virtual home network system 1 includes a registration relay server 100, a presence relay server 200, a relay relay server 300, a DLNA rendezvous 400 and a DLNA agent 500. It may include.

The registration relay server 100 is for registering its own status and information by the DLNA compatible device 10 on the home network and the device 20 connected to the Internet (devices such as the PC 21 and the server 23). Server.

More specifically, the registration relay server 100 is a server that registers all devices 10 and 20 interspersed with the Internet, and all DLNA compatible or non-compliant devices connected to the Internet are registered. The devices are grouped accordingly. Accordingly, the DLNA rendezvous 400 performs an inquiry about the DLNA incompatible devices in the remote area using the registration relay server 100.

The presence relay server 200 reports the actual TCP / IP network connection status (router, firewall, public IP, private IP, induced IP, etc.) of each device, and the DLNA compatible device 10 of the home network is a real Internet device ( It is a server that tells how to connect.

More specifically, the presence relay server 200 is a server for monitoring the network environment for all DLNA incompatible device 20 or compatible device 10 connected to the Internet. When the devices connected to the Internet come online, they periodically update their network status (router, firewall, public IP, private IP, dynamic IP, etc.) with the presence relay server 200 to perform an update.

The DLNA rendezvous 400 may determine how to connect the network device for data transmission to the remote device 20 by querying the network environment information of the remote device 20 registered in the presence relay server 200. do.

The relay relay server 300 is a server that relays them when direct connection between the devices is impossible (that is, when the devices are both inside the firewall and cannot directly connect with each other).

More specifically, the relay relay server 300 when a direct connection (TCP, TCP back connect, etc.) between the DLNA rendezvous 400 and the remote device is impossible (particularly, the DLNA rendezvous 400 and the remote device) is impossible. All are inside the firewall), relaying connections and data transfers between them.

The DLNA rendezvous 400 is a server installed in the home network of the home and receiving a request (media server search and play) of the DLNA compatible device 10 in the home network and transmitting the request to the external device 20 and relaying it.

More specifically, the DLAN rendezvous 400 is a program installed in the device 10 existing in the home network. The DLAN rendezvous 400 should always be connected to the network and be in an on-line state. The DLAN rendezvous 400 operates in the same manner as other DLNA compatible devices 10 existing in the home network and performs a role on behalf of all devices connected to the Internet outside the home network.

That is, the DLNA rendezvous 400 acts as an agent of the DLNA non-compliant device 20 in the home network in place of the external DLNA non-compliant device 20, and all external devices to other DLNA devices in the home network ( 20) to make the DLNA compatible device 10 in the same home network. In addition, the DLNA rendezvous 400 relays the transmission of media data (pictures, music, video) from the DLNA incompatible device 20 which is actually external to the DLNA compatible device in the home network.

Internet connection between the home network and the external DLNA incompatible device 20 is preferred for P2P-based direct connection, but if the direct connection is difficult, the relay relay server 300 is assisted.

More specifically, the role of the DLNA rendezvous 400, first, the DLNA rendezvous 400 replaces a DLNA compatible digital media server (DMS) for a remote DLNA incompatible device 20 connected to the Internet. The DLNA rendezvous 400 connects the external incompatible device 20 to a network and operates as a DMS for the external incompatible device 20. The DLNA rendezvous 400 supports DMS searching in the home network, uploading data to the DMS, media play from the DMS, and the like.

Secondly, DLNA Rendezvous 400 replaces a DLNA compatible Digital Media Renderer (DMR) that is remotely connected to the Internet. That is, the DLNA rendezvous 400 receives a media transmission from another DLNA compatible device in the home network and sends it to an external DMR in place of a remote DMR connected to the Internet.

Third, the DLNA Rendezvous 400 replaces a DLNA compatible Digital Media Printer (DMPr) that is remotely connected to the Internet. The DLNA rendezvous 400 receives the print request from the DLNA compatible device 10 in the home network and transmits the request to the remote DMPr.

Fourth, DLNA rendezvous 400 is a P2P connection with the external device 20 connected to the Internet (direct connection if the direct connection by the official IP or dynamic IP, direct connection, if the private IP connected to the firewall and the router bypass) It performs all the necessary preliminary work and relays data transmission and reception to actual external remote device.

The DLNA agent 500 is a server installed in the device 20 of the external internet. Specifically, the DLNA agent 500 is a program installed in the DLNA incompatible device 20 located remotely, and is responsible for communicating with the DLNA rendezvous 400 installed in the home network. The DLNA agent 500 includes all of the DLNA software stacks, and is in charge of a direct connection with the DLNA rendezvous 400 inside the home network. In addition, the DLNA agent 500 receives a desired request (DLNA rendezvous 400), collects data from the incompatible device, and transmits to the DLNA rendezvous 400.

On the other hand, in the configuration of Figure 1 attached as another embodiment of the present invention Figure 2 is a diagram illustrating a picture transmission to a remote TV from a digital camera connected to the local home network, the configuration and function is the same as above.

4 shows a home TV 11 of a home network that is a home network in a networking method using a DLNA-based Internet virtual home network system according to an embodiment of the present invention, and finds an Internet-connected PC 21 or a server 23 therein. This flowchart shows the case where video data is played. 1 and 2, a DLNA incompatible device connected to the Internet, that is, a remote device 20 such as a PC 21 or a server 23 is installed when a DLNA agent (online) is installed. The device information is registered in the registration relay server 100 and the presence relay server 200 through S500 (S1).

Among the devices 10 of the home network, the home TV 11 searches for digital media servers (DMS) in the local network (S2). At this time, the DLNA rendezvous 400 installed in the home network interprets the request and transmits a find command to the registration relay server 100.

The registration relay server 100 returns the remote device information which it already has to the DLNA rendezvous 400 (S3).

The DLNA rendezvous 400 sends the home TV 11 that originally requested the information received from the registration relay server 100 and waits for the next request (S4).

The home TV 11 recognizes the external PC 21 as if it is a DLNA media server on a local network and sends a video playback request thereto (S5).

The video playback request from the home TV 11 is received by the DLNA rendezvous 400 again, and with the help of the presence relay server 200, a remote PC 21 directly connected to the Internet is connected to the home TV 11. The desired video data is taken and transferred to the home TV 11 (S6).

The home TV 11 receives video data from the DLNA rendezvous 400 and plays it on its own screen (S7).

FIG. 5 is a flowchart illustrating a case in which a digital camera connected to a local home network transmits a picture to a remote TV 11 in a networking method using a DLNA-based Internet virtual home network system according to an embodiment of the present invention. 1 to 3, a user intends to upload a picture stored in a DLNA compatible camera 13 existing in a local home network to a remote TV 25 connected to the Internet (S11).

The DLNA compatible camera 13, which is a digital media controller (DMC), searches for a certified remote TV 25, which is a digital media renderer (DMR), on the home network (S12).

The remote TV 25 authenticated by the DMR located remotely registers its information in the DLNA rendezvous 400 installed in the remote subnetwork (S13). The DLNA rendezvous 400 registers the registered information with the registration relay server 100 and the presence relay server 200 (S13).

The search request of the DLNA compatible camera 13 in step S2 is transmitted to the DLNA rendezvous 400 existing in the home network where the camera is located, and the DLNA rendezvous 400 inquires the registration relay server 100. The registered remote TV 25 information is returned to the DLNA compatible camera 13 (S14).

The DLNA compatible camera 13 acquires uploadable DMR information and then sends photo data to the remote TV 25 which is the acquired device (S15).

Photo data transmission of the step (S15) is delivered to the DLNA rendezvous 400 in the home network in which the camera is located, DLNA rendezvous 400 using the actual network connection information obtained by referring to the photo data from the presence relay server 200 Direct transmission to the remote TV 25 obtained (S16).

That is, the photo data transmission is transmitted to the DLNA rendezvous 400 in the home network in which the camera is located and re-delivered to the DLNA rendezvous 400 in the home network in which the remote TV is located.

In this case, the network connection between the DLNA rendezvous 400 existing in the local and remote home networks uses the actual network connection information obtained by referring to the Pre-Hence relay server 200.

According to the above procedure, the data passed through the DLNA rendezvous 400 in the local and remote home networks are finally transmitted to the remote TV 25.

The remote TV 25 outputs the picture data transmitted to the screen as if the DLNA rendezvous 400 and the relay relay server 300 play the picture transmitted from the camera in the network to which they belong (S17).

That is, the remote TV 25 outputs the picture data transmitted through the DLNA rendezvous 400 of both the DLNA compatible camera and the relay relay server 300 to the screen.

The method of transmitting a picture from the digital camera connected to the local home network to the remote TV 11 among the above-described configuration and the networking method using the DLNA-based Internet virtual home network system is similar to the configuration of another embodiment as shown in FIG. Recognizes home and remote home networks as one DLNA home network and configures one virtual DLNA home network so that data can be transmitted and output on the screen according to the above configuration and operation. Detailed operation procedure Is omitted in the same manner as the above procedure.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (eg, transmission over the Internet). It also includes.

The computer readable recording medium can also be injected onto a networked computer system so that the computer readable code is stored and executed in a distributed fashion. And functional programs, codes and code segments for implementing the present invention can be easily inferred by programmers in the art to which the present invention belongs.

Although the contents of the present invention have been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art may realize various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

10: Home Network Device 11: Home TV
13: DLNA compatible camera 20: remote device
21: PC 23: Server
25: Remote TV 100: Registration relay server
200: presence relay server 300: relay relay server
400: DLNA Rendezvous 500: DLNA Agent

Claims (6)

In order to provide the Internet virtual home network system, it consists of a registration relay server, a pre-existence relay server, a relay relay server, a DLNA rendezvous, a DLNA agent, and registers the status and information by DLNA compatible devices and external DLNA incompatible devices on the home network. Registration relay server that is a server for; A presence relay server that reports a network connection state of the DLNA compatible device and the DLNA non-compliant device, and wherein the DLNA compatible device of the home network informs a method of connecting the external DLNA non-compliant device; A relay relay server which is a server which relays when a direct connection between the DLNA compatible device and the DLNA incompatible device is impossible; In the DLNA-based Internet virtual home network system comprising a; and a program installed in the DLNA non-compliant device, a DLNA agent responsible for communication with the DLNA rendezvous installed in a home network,
The DLNA rendezvous is installed in a home network to make a DLNA incompatible or compatible device on an external Internet network look like a DLNA compatible device in a local home network to interoperate with an incompatible device in a home network or to transmit data to the DLNA incompatible device. Determining the connection method by querying the network environment information of the DLNA non-compliant device registered in the presence relay server when the network connection is performed.
The registration relay server,
The DLNA compatible or DLNA incompatible devices are all registered, and are configured to group devices according to a user or a predetermined scenario to perform an inquiry for the DLNA incompatible devices remotely by the DLNA rendezvous, and the DLNA agent Is,
A program that is installed directly on a DLNA incompatible device such as a server or a PC so that the installed device operates like a DLNA compatible device, registers device information with the relay registration server, or requests the DLNA rendezvous in a remote home network. DLNA based Internet virtual home network system, characterized in that after receiving the data collected from the incompatible device, the DLNA rendezvous transmits the desired data.
delete The method of claim 1, wherein the DLNA rendezvous,
A program installed on the DLNA compatible device, which is always connected to the network and is on-line so that the external DLNA non-compliant device connected to the Internet can be seen as the DLNA compatible device in the same home network. DLNA-based Internet virtual home network system, characterized in that to play a role.
delete delete delete

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