KR20150121994A - The system to control sharing contents among DLNA devices mutually spaced at a long distance - Google Patents

Abstract

The present invention provides a system for controlling content sharing among DLNA devices located far away from each other, comprising: a plurality of DLNA devices; a plurality of network devices for supporting wireless communications among DLNA devices located in a predetermined region, among the DLNA devices; and a plurality of servers for performing wireless communications with the network devices, respectively, generating a list including DLNA devices that can share content, and sharing the generated list with other servers. The servers can determine DLNA devices for allowing to use a DLNA device which has transmitted a message, as DLNA devices which can share content, when the message for searching for a device is received from a DLNA device existing in another network.

Description

[0001] The present invention relates to a system for controlling content sharing between remote DLNA devices,

Embodiments relate to a system for controlling content sharing between DLNA devices located remotely.

DLNA is an abbreviation of Digital Living Network Alliance. It is a group that defines protocols for sharing and reproducing various media contents (music / photo / video) regardless of manufacturer and product type through DLNA certified network. In addition, the function of sharing or reproducing various media contents regardless of the manufacturer and product type through the network is called DLNA function, and a device equipped with DLNA function is also called DLNA device.

Devices equipped with DLNA function can share and play various multimedia contents with each other. However, devices equipped with the DLNA function can share and reproduce contents within a limited area. For example, devices equipped with the DLNA function can share and reproduce contents only among devices existing in a region capable of performing wireless communication through one wireless network device. As such, only devices located within a restricted area can share and play content, so that the range of content sharing and playback is limited to within the physical distance range that can perform wireless communication through the network device. Therefore, there is a demand for a method of expanding the use area of the content without being limited by the physical distance between the DLNA devices. However, there is a risk that the DLNA device may be hacked by a user of another DLNA device for which the content is not intended when the content is used without being limited by the physical distance. Therefore, an environment is required in which only the DLNA device approved by the user of the DLNA device can share or reproduce the content. In addition, since a situation in which a plurality of users simultaneously share or reproduce contents may occur, a method of adjusting the use of the contents in such a situation is required.

Embodiments can provide a system for controlling content sharing between DLNA devices located remotely that can share content without being limited by physical distance.

It is also possible to provide a system for controlling content sharing between remote DLNA devices that can share content only with a DLNA device that has approved use.

In addition, it is possible to provide a system for controlling content sharing between remote DLNA devices that can prevent content from being shared indiscriminately and reduce the risk of hacking.

It is also possible to provide a system that controls content sharing among DLNA devices that can share content continuously without interrupting the use of the content due to other DLNA devices.

A system for controlling content sharing between remote DLNA devices in accordance with an embodiment includes: a plurality of DLNA devices; Among the plurality of DLNA devices, a plurality of network devices supporting wireless communication between DLNA devices located within a certain area; And a plurality of servers for performing a wireless communication with the plurality of network devices, generating a list including DLNA devices capable of sharing contents, and sharing the generated list with other servers, When a plurality of servers receive a message for searching for a device from a DLNA device existing in another network, the DLNA devices that have approved the use of the DLNA device that transmitted the message are identified as DLNA devices capable of sharing the content .

In addition, the plurality of servers may share the contents with DLNA devices sharing contents with other DLNA devices.

In addition, when the plurality of servers receives an approval request from a DLNA device existing in another network, the plurality of servers can approve the use of each DLNA device existing in the network.

A system for controlling content sharing between remote DLNA devices in accordance with another embodiment includes a plurality of DLNA devices; And a list including DLNA devices capable of transmitting the message to another network and multicasting a message for device search from any one DLNA device among the plurality of DLNA devices, Wherein the agent module acknowledges the use of the DLNA device that multicasted the message and sends the authorized DLNA devices to the DLNA devices capable of sharing the content, .

In addition, the agent module may not determine that the DLNA device sharing the content with another DLNA device is a DLNA device capable of sharing the content.

When the agent module receives an approval request from a DLNA device existing in another network, the agent module can approve the use of each DLNA device in the network.

According to the system for controlling content sharing among DLNA devices located at a remote location according to the embodiment, content can be shared without being limited by physical distance.

In addition, content can only be shared by authorized DLNA devices.

In addition, content can be prevented from being shared indiscriminately, and the risk of hacking can be reduced.

In addition, content can be continuously shared without stopping the use of the content due to other DLNA devices.

1 is a diagram showing a configuration of a system for controlling content sharing among DLNA devices located at a long distance according to the first embodiment.
2 shows a list of DLNA devices according to the first embodiment.
3 is a diagram showing a configuration of a system for controlling content sharing among DLNA devices located at a long distance according to the second embodiment.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of example, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. It is also to be understood that the location or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention may be limited only by the appended claims, along with the full scope of equivalents to which the claims are entitled, if properly explained. In the drawings, like reference numbers may refer to the same or similar functions throughout the several views.

Hereinafter, preferred 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.

1 is a diagram showing a configuration of a system for controlling content sharing among DLNA devices located at a long distance according to the first embodiment. Hereinafter, with reference to FIG. 1, a description will be made of the operation of the system 10 for controlling content sharing among DLNA devices located at a long distance according to the first embodiment.

The system 10 for controlling content sharing between remote DLNA devices according to the first embodiment includes first to third DLNA devices 100a, 100b and 100c, first to third network devices 110a and 110b , 110c and first to third servers 120a, 120b, 120c.

The first to third DLNA devices 100a, 100b, and 100c are devices equipped with the DLNA function, and the type thereof is not particularly limited. In general, a smartphone can be, but is not necessarily limited to, a smart TV, a computer, a notebook, a PDA, a digital camera, and the like.

The first to third network devices 110a, 110b, and 110c are devices that support wireless communication between devices located within a certain area, and the first and second network devices 110a, 110b, . Through the first to third network devices 110a, 110b, and 110c, the areas where wireless communication is possible can be expressed as a first network, a second network, and a third network, respectively. The first to third network devices 110a, 110b, and 110c may be connected to each other through a VPN (Virtual Private Network). Accordingly, a DLNA device connected to any one network device can be connected to a DLNA device connected to another network device, and can share or reproduce contents with each other.

For example, the first DLNA device 100a connected to the first network device 110a may be connected to the second DLNA device 100b connected to the second network device 110b, and may share contents with each other. The second DLNA device 100b connected to the second network device 110b may be connected to the third DLNA device 100c connected to the third network device 110c and may share contents with each other. Accordingly, the first to third network devices 110a, 110b, and 110c are connected to each other through a network, and the first to third DLNA devices 100a, 100b, and 100c can share or play content with each other.

The first to third servers 120a, 120b and 120c are connected to the first to third DLNA devices 100a, 100b and 100c via the corresponding first to third network devices 110a, 110b and 110c, Can be connected. When the first to third DLNA devices 100a, 100b, and 100c located in the network connected to the network are to search for a device for content sharing, the first to third servers 120a, 120b, A message for searching can be transmitted. At this time, the message for the DLNA device to search for the device for content sharing may be a Discovery message conforming to the DLNA protocol. The first to third servers 120a, 120b, and 120c can automatically transmit a message, search for DLNA devices capable of sharing or playing back content, generate and transmit a list including the retrieved devices, An agent program that can execute the program can be implemented.

For example, when the first DLNA device 100a requests a device search, the first server 120a connected to the network in the same network as the first DLNA device 100a transmits a discovery message for searching for the device to the first network device 110a to the second network device 110b and the third network device 110c connected via the VPN. At this time, the first server 120a may package the discovery message into TCP / IP packets and then transmit the packaged message to other networks. In addition, a request for a message for the first DLNA device 100a to search for a device for sharing content can be made through a method of multicasting a discovery message in a network.

The second network device 110b and the third network device 110c receive the discovery message from the first network device 110a and the received discovery message is transmitted to the second server 120b and the third server 120c . The second server 120b and the third server 120c having received the discovery message change the sender IP portion of the message of the received discovery to the IP of the first DLNA device 100a requesting the device search, Discovery messages can be multicast within the network.

The second server 120b and the third server 120c may then generate a list of DLNA devices capable of sharing or playing content with the first DLNA device 100a. In addition, the list of generated DLNA devices may be transmitted to the first server 120a. The device in which the first DLNA device 100a can share and reproduce contents may be different depending on whether or not the DLNA device 100a is authorized and whether or not it is used.

The device by which the first DLNA device 100a can share and reproduce the content may be different depending on whether the first DLNA device 100a is authorized or not. The second server 120b and the third server 120c can respectively approve the use of the second DLNA device 100b and the third DLNA device 100c located in the network by the first DLNA device 100a . In addition, although only one DLNA device exists in each network in FIG. 1, there may be two or more DLNA devices in each network. The second server 120b and the third server 120c may approve DLNA devices available for use by the first DLNA device 100a among DLNA devices existing in the network.

2 shows a list of DLNA devices according to the first embodiment. 2, the list 20 of DLNA devices according to the first embodiment includes a search request network 200, a search request device 210, a usage request network 220, a usage device 230, (240).

The search request network 200 may indicate the network in which the DLNA device that requested the device search exists. The search requesting device 210 may indicate the DLNA device that requested the device search. The usage request network 220 may indicate the network that the DLNA device that requested the device search is intended to use. The using device 230 may display DLNA devices present in the network that the DLNA device requesting the device search may use. The use device 230 is present in the use request network 220, and DLNA devices connected to the network can be displayed. Thus, DLNA devices that are not connected to the network, such as the situation that the power is off, may not be displayed on the using device 230. And, DLNA devices currently sharing or reproducing contents by other DLNA devices may not be displayed in the usage device 230. [ The acknowledgment 240 may indicate that the DLNA device requesting the device search is authorized to use the devices displayed in the device 230. [ That is, DLNA devices that can be used by the DLNA device requesting the device search can be approved for each DLNA device, and can be displayed in the approval status 240.

2, the first DLNA device existing in the first network requests use of the second network, and the second network includes a smart TV, a PC, a notebook, and a digital camera. In the second network device, Smart TVs, notebooks, and digital cameras.

The list of DLNA devices shown in FIG. 2 can be implemented in a web browser form in a display device (not shown) connected to the first to third servers 120a, 120b and 120c. Accordingly, the first to third servers 120a, 120b, and 120c can identify the DLNA devices available to the DLNA devices in each network. Since the first to third servers 120a, 120b, and 120c communicate with the DLNA devices existing in each network in real time, the DLNA devices currently in use can be confirmed in real time. As a result, the DLNA devices currently in use can be excluded from the list of the devices 230 in the list of DLNA devices. That is, the list of DLNA devices can be updated in real time.

The first to third servers 120a, 120b, and 120c may request authorization for an unapproved DLNA device. For example, in the list of DLNA devices shown in FIG. 2, the first server 110a existing in the same network as the first DLNA device 100a may request permission to use the PC existing in the second network . Then, the second server 120b of the second network can approve or reject the approval of the use approval request. If approved by the second server 120b, the PC in the list of DLNA devices of FIG. 2 may be changed and displayed as approved.

The first to third servers 120a, 120b, and 120c may transmit, from the list of DLNA devices, a list showing only the actually used devices 230 to the DLNA devices 100a, 100b, and 100c. For example, the first server 120a may transmit only the smart TV, the notebook, and the digital camera to the searched DLNA device list, except for the PC which is not approved as the first DLNA device 100a. The first DLNA device 100a receiving the searched DLNA device list can select one of the DLNA devices included in the received list. And, you can share or play content with the selected DLNA device.

According to the system 10 for controlling content sharing between remote DLNA devices according to the first embodiment, when content is shared among DLNA devices located at a remote location, , But only DLNA devices that are approved by each server can share content. Therefore, a user of each DLNA device can not share content with a DLAN device that he does not want, and can solve security problems such as hacking and the like. And, since the DLNA device currently sharing or reproducing the content can not share or play the content in another DLNA device, the DLNA device can continuously share or play the content.

3 is a diagram showing a configuration of a system for controlling content sharing among DLNA devices located at a long distance according to the second embodiment. Hereinafter, with reference to FIG. 3, a description will be made of the operation of the system 30 for controlling content sharing between DLNA devices located at a long distance according to the second embodiment.

A system 30 for controlling content sharing between remote DLNA devices according to the second embodiment includes first to third DLNA devices 300a, 300b, 300c and first to third network devices 310a, 310b , 310c.

The system 30 for controlling content sharing between remote DLNA devices according to the second embodiment differs from the system 10 for controlling content sharing between remote DLNA devices according to the first embodiment, And may not include servers connected to each network device.

Discovery messages are automatically transmitted to the first to third network devices 310a, 310b, and 310c, DLNA devices capable of sharing or playing back content are searched, and a list of searched devices is generated and transmitted And an agent program that can approve the use request of the DLNA device can be implemented.

This agent program operates in the first to third network devices 310a, 310b and 310c and is connected to the first to third network devices 310a, 310b and 310c in the form of a display device (not shown) .

Therefore, the system 30 for controlling the content sharing between the DLNA devices located at a distance according to the second embodiment is able to control DLNA devices for content sharing or playback in the first to third network devices 310a, 310b, and 310c Retrieve, create and send a list of retrieved devices, and approve usage for a DLNA device requesting content sharing or playback.

Accordingly, the system 30 for controlling the content sharing between DLNA devices located at a remote location according to the second embodiment can construct a system without including a separate server. And, since DLNA devices that are approved only share the contents, it is possible to selectively share contents and enhance security. And, the DLNA device currently in use can continuously share or reproduce contents.

10, 30: a system for controlling content sharing between DLNA devices located remotely
100a, 300a: a first DLNA device
100b, 300b: the second DLNA device
100c, 300c: a third DLNA device
110a, 310a: a first network device
110b, 310b: a second network device
110c and 310c: a third network device
120a: first server
120b: a second server
120c: a third server

Claims (6)

A plurality of DLNA devices;
Among the plurality of DLNA devices, a plurality of network devices supporting wireless communication between DLNA devices located within a certain area; And
A plurality of servers for generating a list including DLNA devices capable of performing wireless communication with the plurality of network devices, sharing contents, and sharing the generated list with other servers,
When the plurality of servers receive a message for device search from a DLNA device existing in another network, the DLNA devices that have approved the use of the DLNA device that transmitted the message are identified as DLNA devices capable of sharing the content The content sharing between DLNA devices located at a distance. The method of claim 1, wherein the plurality of servers
Wherein the DLNA device sharing content with another DLNA device controls content sharing between remote DLNA devices that do not discriminate the DLNA device capable of sharing the content. The method of claim 1, wherein the plurality of servers
A system for controlling content sharing between DLNA devices located at a remote location that accepts use of DLNA devices existing in a network when receiving an approval request from a DLNA device existing in another network. A plurality of DLNA devices; And
A list including DLNA devices capable of transmitting the message to another network and capable of sharing contents from the other network by multicasting a message for device search in any DLNA device among the plurality of DLNA devices, A plurality of network devices including a receiving agent module,
The agent module authorizes use of the DLNA device that multicasted the message and controls the sharing of content between DLNA devices located remotely that determines the authorized DLNA devices as DLNA devices capable of sharing the content system. 5. The method of claim 4, wherein the agent module
Wherein the DLNA device sharing content with another DLNA device controls content sharing between remote DLNA devices that do not discriminate the DLNA device capable of sharing the content. 5. The method of claim 4, wherein the agent module
A system for controlling content sharing between DLNA devices located at a remote location that accepts use of DLNA devices existing in a network when receiving an approval request from a DLNA device existing in another network.

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