KR102079339B1 - Apparatas and method for contents transfer to dlna connected device of cloud system in an electronic device - Google Patents

Abstract

The present invention provides a method of operating a client on a cloud service system, the method comprising: receiving a stream metadata table including information of at least one content from a server; Converting metadata of the selected content among the contents to match a format used in the selected device among at least one device connected through a network; And an electronic device and a method for delivering content on a cloud system to a device connected to DLNA, the process of streaming the selected content from the server and delivering the selected content to the selected device.

Description

Electronic devices and methods for delivering content on cloud systems to devices connected to DLNA {APPARATAS AND METHOD FOR CONTENTS TRANSFER TO DLNA CONNECTED DEVICE OF CLOUD SYSTEM IN AN ELECTRONIC DEVICE}

The present invention relates to a cloud system.

The cloud service is an internet-based computing technology that provides data, utilities, and the like stored in a server on the Internet to a client terminal such as a computer or a mobile phone when a user needs it. The system for efficiently providing the resources of the cloud infrastructure does not need to distinguish between local storage and various heterogeneous storages in the user's own terminal, and dynamically expands the storage according to various needs. Elastic storage provisioning techniques can be provided. When the client receives a file access request from an application, the client determines whether to process the file access request as a local file access request for local storage or a cloud file access request for cloud storage connected through the Internet. The mediation server receives the cloud file access request and supports the client in using the cloud server.

The conventional cloud service has a two-tier structure that serves to provide meta data of cloud infrastructure resources through an intermediary server when accessing resources of the cloud infrastructure. Accordingly, the conventional cloud service determines whether the content to be actually provided is local or on the cloud, and provides appropriate content. However, the above-described method has a problem that the mediation server can not only determine the file access, but also convert the content into a form suitable for the client.

The present invention has been proposed to solve the above problems of the conventionally proposed methods, and proposes an apparatus and method for reproducing content received from a cloud server in each client connected by DLNA.

Another proposal of the present invention is to propose an apparatus and method for changing metadata provided on a cloud system to match a format of a client connected by DLNA.

According to an aspect of the present invention, there is provided a method of operating an electronic device, the method comprising: receiving a stream metadata table including information of at least one content from a server; process; Converting metadata of the selected content among the contents to match a format used in the selected client among at least one client connected through a network; And streaming the selected content from the server and delivering the selected content to the selected client.

Preferably, the step of checking the type of protocol provided by the server; Requesting the server for the identified protocol; Receiving a response message of the checked protocol from the server; And requesting the stream metadata table from the server.

Preferably, the method may further include checking metadata information of the at least one content provided by the server.

Preferably, the checking of the metadata information of the at least one content provided by the server may include analyzing the response message of the received protocol or using the API provided by the cloud to determine the metadata of the at least one content. You can check the information about the data.

Preferably, the accessibility of the selected client can be checked.

Preferably, the checking of the accessibility of the selected client comprises: transmitting a ProtocolInfo message to the selected client; And receiving a response signal for a ProtocolInfo message from the selected client.

Preferably, the network may be DLNA.

Preferably, the step of converting the metadata of the selected content of the content to match the format used in the selected client of the at least one client connected to the network, confirming that any one of the at least one content is selected Process of doing; Checking metadata of the selected content among metadata information of the at least one identified content; And converting the identified metadata to match a format used by the selected client connected by DLNA.

Preferably, the step of converting the identified metadata to match the format used by the selected client connected by DLNA includes: URI, type of content among the checked metadata to match the format used by the selected client; At least one of the size, the play time, and the thumbnail URI may be converted.

Preferably, the step of converting a public IP address, which is an address on the web browsing in which the at least one content is published into a private IP address; And transmitting the converted URI and the private URI including the converted IP address to the selected client.

Preferably, the process of streaming the selected content from the server to the selected client may push the content streamed from the server to be played on the selected client.

Preferably, the process of streaming the selected content from the server and delivering the selected content to the selected client may pull the content streamed from the server to be played on the selected client.

According to an aspect of the present invention, there is provided a method of operating a client, the method comprising: receiving metadata corresponding to a format of a network being used from an electronic device; And a process of streaming arbitrary content from the electronic device.

Preferably, the method may further include checking accessibility from the electronic device.

Preferably, the step of checking accessibility from the electronic device comprises: receiving a ProtocolInfo message from the electronic device; And transmitting a response signal to a ProtocolInfo message to the electronic device.

Preferably, in the process of receiving the metadata that matches the format of the network being used from the electronic device, the private URI of the arbitrary content may be received together.

Preferably, the network may be DLNA.

An electronic device according to an aspect of the present invention for achieving the above object is a protocol extractor for receiving a stream metadata table including information of at least one content from a server in an electronic device on a cloud service system. ; A metadata generator for converting metadata of the selected content among the contents to match a format used in the selected client among at least one client connected through a network; And a DLNA DMC (Digital Media Controller) for streaming the selected content from the server and delivering the selected content to the selected client.

Preferably, the protocol extractor checks the type of protocol provided by the server, requests the server to get the identified protocol, receives a response message of the checked protocol from the server, and The stream metadata table may be requested.

The metadata generator may further include a metadata generator for identifying metadata information of the at least one content provided by the server.

Preferably, the metadata generator may analyze information on the metadata of the at least one content by analyzing a response message of the received protocol or using an API provided by the cloud.

Preferably, the DLNA DMC can check the accessibility of the selected client.

Preferably, the DLNA DMC may transmit a ProtocolInfo message to the selected client and receive a response signal to the ProtocolInfo message from the selected client.

Preferably, the network may be DLNA.

Preferably, the metadata generator confirms that any one content of the at least one content is selected, and checks the metadata of the selected content among the metadata information of the at least one content identified, The identified metadata may be converted to match the format used by the selected client connected by DLNA.

Preferably, the metadata generator may convert at least one of a URI, a type, a size, a playback time, and a thumbnail URI of content among the checked metadata to match a format used in the selected client.

Preferably, the metadata generator converts a public IP address, which is an address on web browsing in which the at least one content is published, into a private IP address, and includes a private URI including the converted IP address in the selected client and the private IP address. The converted metadata can be sent.

Preferably, the metadata generator may push the content streamed from the server to be played on the selected client.

Preferably, the metadata generator may pull content streamed from the server to be played on the selected client.

A client according to an aspect of the present invention for achieving the above object, in the client on the cloud service system, receives metadata that matches the format of the network being used from the electronic device, and receives arbitrary content from the electronic device. A communication module for streaming; And a control unit for controlling the overall operation.

Preferably, the communication module may receive accessibility confirmation from the electronic device.

Preferably, the communication module may receive a ProtocolInfo message from the electronic device and transmit a response signal to the ProtocolInfo message to the electronic device.

Preferably, the communication module may receive a private URI of the arbitrary content together.

Preferably, the network may be DLNA.

According to the electronic device and the method for delivering the content on the cloud system of the present invention to a device connected by DLNA, the content received from the cloud server can be played by each client connected by DLNA.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram for explaining a client as a whole delivering content on a cloud system to a device connected by DLNA according to the present invention.
2 is a diagram illustrating an embodiment of streaming content from a server on a cloud system and transmitting the same to a client according to the present invention.
3 is a diagram illustrating an embodiment of mapping of a media protocol and mapping of cloud content according to the present invention;
4 is a flowchart illustrating an operation sequence of a server, an electronic device, and a client according to an embodiment of the present invention.
5 is a flowchart illustrating an operation sequence of an electronic device according to the present invention.
6 is a block diagram illustrating a configuration of an electronic device according to an embodiment of the present disclosure.
7 is a flowchart illustrating an operation sequence of a client according to an embodiment of the present invention.
8 is a block diagram showing a configuration of a client according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

1 is a view for explaining the client as a whole to deliver the content on the cloud system to the DLNA connected device according to the present invention. As shown in FIG. 1, the present invention may be composed of a server 101, an electronic device 102, and a client 103 on a cloud system. Here, the cloud service may be defined as a service that can download and use content stored in the server from a client connected to the server. In other words, it is a computing service that borrows computing resources such as hardware and software that exist in an intangible form, such as a cloud, and pays for them as necessary.The computing services exist at different physical locations. A technology that integrates and provides resources with virtualization technology. For example, a client using a cloud service may download and display content desired by the client regardless of time and place by connecting to a server even if a large amount of content is not stored in the client.

The server 101 on the cloud system may transmit at least one stored content to the electronic device 102. More specifically, the server 101 may receive a request for streaming specific content from the electronic device 102 and transmit the corresponding content to the electronic device 102. Hereinafter, the operation procedure of the server in the present invention will be described in detail. First, the server 101 may communicate with the electronic device 102 using a protocol provided on a corresponding cloud system. The server 101 receives a request for a protocol (GET) of the protocol from the electronic device 102 that has confirmed the protocol. 102 may transmit a response message of the protocol. The cloud server 101, which transmits a protocol response message to the electronic device 102, receives a stream metadata table including information of at least one content from the electronic device 102, and receives the request from the electronic device 102. Can send stream metadata table. Thereafter, the server 101 may receive a stream of any one content among at least one content from the electronic device 102 and transmit the requested content to the electronic device 102.

The electronic device 102 on the cloud system may receive a stream metadata table including information of at least one content from the server 101. More specifically, the electronic device 102 checks the type of protocol provided by the server 101, requests the server 101 to get the protocol identified, and sends a response message of the protocol confirmed from the server 101. Can be received. Here, the electronic device 102 may check metadata information of at least one content provided by the server 101. More specifically, the electronic device may analyze the response message of the protocol received from the server 101 or check information on metadata of at least one content by using an application program interface (API) provided by the cloud. Thereafter, the electronic device 102 may request the stream metadata table from the server 101 and receive the stream metadata table from the server 101. More specifically, the electronic device 102 requests the server 101 to the stream metadata table including the information of the at least one content, so that the electronic device 102 receives the information of the at least one content from the server 101. The included stream metadata table may be received.

Thereafter, the electronic device 102 may check the accessibility of the selected client 103. More specifically, the electronic device 102 may transmit a ProtocolInfo message from the user to the selected client 103 and receive a response signal to the ProtocolInfo message from the selected client 103. Here, the reason why the electronic device 102 checks the accessibility of the selected client 103 is to check how to transmit metadata information to the corresponding client 103. That is, since the electronic device 102 according to the present invention performs a relay function for converting the metadata of the specific content streamed from the server 101 to match the format of the DLNA used in the selected client 103, the selected device 103 is selected. The accessibility of the client 103 is first checked. Here, DLNA (Digital Living Network Alliance) is a new official partnership that will lead the commercialization of the world's home network, and renamed the Digital Home Working Group (DHWG), which was launched in June 2003. DLNA connects information appliances such as home PCs through a wired or wireless network to enable internet and data sharing, and to share and control peripheral devices such as scanners and printers, and to communicate with external networks using the Internet or portable information terminals. It can be defined as a system that can remotely control home appliances such as TV, refrigerator, air conditioner, DVD player, and digital camera at home anytime and anywhere.

Thereafter, the electronic device 102 may convert metadata of the selected content of the at least one content to match the format used by the selected client 103 of the at least one client 103 connected through the network. That is, the electronic device 102 may convert the metadata of any one content selected from the user among the at least one content to match the format used in the selected client 103 of the at least one client 103 connected by DLNA. have. More specifically, the electronic device 102 confirms that any one content of the at least one content is selected, checks the metadata of the selected content among the metadata information of the at least one identified content, and confirms the checked meta The data can be converted to match the format used by the selected client 103 connected by DLNA. Herein, the electronic device 102 may identify a Uniform Resource Identifier (URI), a type, a size, a playback time, and a thumbnail of the content among the metadata determined to match the format used by the selected client. ) At least one of the URI can be converted. Subsequently, the electronic device 102 converts a public IP address, which is an address on web browsing in which at least one content is displayed, into a private IP address, and converts the IP into a selected client 103. You can send the private URI containing the address and the translated metadata. Thereafter, the electronic device 102 may stream the selected content from the server 101 and deliver it to the selected client 103. More specifically, the electronic device 102 may push or pull the content streamed from the server 101 to be played on the selected client 103.

The client 103 on the cloud system may receive accessibility confirmation from the electronic device 102. More specifically, the client 103 may receive a ProtocolInfo message from the electronic device and transmit a response signal to the ProtocolInfo message to the electronic device 102. Here, the reason why the electronic device 102 checks the accessibility of the selected client 103 is to check how to transmit metadata information to the corresponding client 103. That is, since the electronic device 102 according to the present invention performs a relay function for converting the metadata of the specific content streamed from the server 101 to match the format of the DLNA used in the selected client 103, the selected device 103 is selected. The accessibility of the client 103 is first checked. Thereafter, the client 103 may receive metadata corresponding to the format of the network being used from the electronic device 102 and stream arbitrary content. More specifically, the client 103 may receive the metadata corresponding to the format of the DLNA used by the electronic device 102 and the private URI of the content together, and stream arbitrary content.

2 is a diagram illustrating an embodiment of streaming content from a server on a cloud system and transmitting the same to a client according to the present invention. 2 (a) is a diagram illustrating an embodiment in which content is streamed from a server on a cloud system and pushed to a client according to the present invention. First, as shown in (a) of FIG. 2, the cloud proxy 202 according to the present invention includes a protocol extractor 203, a protocol handler 204, a metadata generator, and a metadata generator. 205), a DLNA DMC (Digital Media Controller) 206 and a DLNA DMS (Digital Media Server, 207). The protocol extractor 203 may interpret the protocol provided by the cloud service provider 201 to determine what kind of protocol is provided by the cloud service provider. For example, when the protocols provided by the cloud service provider 201 are Hyper Text Transfer Protocol (HTTP), Real-time Transfer Protocol (RTP), and Multimedia Messageing Service (MMS), respectively, the protocol extractor 203 The prototol provided by the cloud service provider 201 may be confirmed that the HTTP, RTP and MMS, respectively. The protocol handler 204 receives the protocol interpreted by the protocol extractor 203 from the protocol extractor 203 and delivers it to the metadata generator 205. For example, when the protocol interpreted by the protocol extractor 203 is HTTP, the protocol handler 204 may receive the HTTP protocol from the protocol extractor 203 and deliver the HTTP protocol to the metadata generator 205. The metadata generator 205 extracts information necessary for the streaming player (client) 208 to play the selected content through protocol information obtained through the protocol handler 204. The DLNA DMC 206 is a device that can push or control the contents of the DMS in the DLNA. The DLNA DMS 207 is a device serving as a server having content in DLNA. More specifically, the DLNA DMS 207 may stream the content to the client 208 as if it is stored, without substantially storing the content streamed from the cloud service provider 201. The DLNA DMR (Digital Media Renderer) provided in the client 208 plays a role of playing the contents of the DMS. In this embodiment, the specific content is pushed from the cloud proxy 202 to the client 208. More specifically, the cloud proxy 202 sends instructions to the client to play specific content. Thereafter, the DLNA DMR included in the client 208 can play the contents of the DMS.

FIG. 2B is a diagram showing an embodiment of pulling content streams from a server on a cloud system according to the present invention to a client. First, as shown in FIG. 2B, the cloud proxy 210 according to the present invention is a protocol extractor 211, a protocol handler 212, a metadata generator 213, and a DLNA DMS 214. Can be configured. The protocol extractor 211 may interpret the protocol provided by the cloud service provider 209 to determine what kind of protocol is provided by the cloud service provider. For example, when the protocols provided by the cloud service provider 209 are HTTP, RTP, and MMS, respectively, the protocol extractor 211 may have the protocols provided by the cloud service provider 209 as HTTP, RTP, respectively. And MMS. The protocol handler 212 receives the protocol interpreted by the protocol extractor 211 from the protocol extractor 211 and delivers the protocol to the metadata generator 213. For example, when the protocol interpreted by the protocol extractor 211 is RTP, the protocol handler 212 may receive the RTP protocol from the protocol extractor 211 and transmit it to the metadata generator 213. The metadata generator 213 extracts information basically required for the streaming player (client) 215 to play the selected content through the protocol information obtained through the protocol handler 212. DLNA DMS 214 is a device that acts as a server having content in DLNA. More specifically, the DLNA DMS 214 does not substantially store the content streamed from the cloud service provider 209, but can stream the content to the client 215 as if it is stored. The DLNA DMR included in the client 215 plays a role of playing the contents of the DMS. In this embodiment, it is shown that the specific content is pulled from the cloud proxy 210 to the client 215. More specifically, the cloud proxy 210 receives a command to play a specific content from the client 215, so that the DLNA DMR provided in the client 215 can play the content of the DMS.

2 (c) is a diagram illustrating an embodiment of streaming content from a server when the cloud proxy according to the present invention is located in a local device. First, as shown in FIG. 2C, it may be located in a cloud proxy local device (client) 217 according to the present invention. The client 217 according to the present invention may be composed of a protocol extractor 218, a protocol handler 219, a metadata generator 220, a streaming buffer, and a streaming player. In the present embodiment, when the cloud proxy is located on the local device, the cloud service may be provided from the cloud service provider 216 at the local device by providing an HTTP stream directly to the buffer of the streaming player.

3 is a diagram illustrating an embodiment of mapping of a media protocol and mapping of cloud content according to the present invention. 3A is a diagram illustrating an embodiment of mapping of a media protocol according to the present invention. In the present invention, the cloud proxy may match the resource information of the item that the user wants to play with the protocol information of the DMR to create a common matching list, and may bring the highest priority protocol list of the DMR. For example, the cloud proxy generates eight resources corresponding to the content item 2 and then searches for three resources, which are resources supported by the DMR. As a result, the cloud proxy can confirm that resource number 5 generated by the proxy and resource number 3 supported by the DMR are mapped. In addition, the cloud proxy may convert an external public IP into a private IP, and may have a relay server for validating a DMR. The server can respond by adding DLNA to the HTTP head commands of Reverse-NAT and DMR.

FIG. 3B is a diagram illustrating an embodiment of mapping cloud content according to the present invention, and FIG. 3C is a diagram illustrating another embodiment of mapping cloud content according to the present invention. First, a method for generating metadata in a metadata generator of a cloud proxy according to the present invention can be largely divided into two methods. 3 (b) illustrates a case where a table is provided through a data API or an HTTP request without processing individual items as individual URIs in a cloud service. For example, fmt code = 18 indicates that when the fmt (format) code is 18, the content type of DNLA is converted to mp4: DLNA.ORG-PN = MPEG4-P2-MP4-ASP-AAC. That is, the present embodiment illustrates a metadata conversion method, and more specifically, illustrates a codec information conversion method. 3 (c) illustrates an embodiment in which individual URIs are provided for individual content. More specifically, as shown in FIG. 3 (b), the present embodiment shows an embodiment of providing individual URIs for individual contents without converting metadata by using a table provided through a data API or an HTTP request. . For example, the content feature is extracted separately to show that the content type of DNLA is converted to mp4: DLNA.ORG-PN = AVC-TS-MP-HD-AAC-MULT5.

4 is a flowchart illustrating an operation sequence of a server, an electronic device, and a client according to an embodiment of the present invention. First, the electronic device may receive a stream metadata table including information of at least one content from a server (401). More specifically, the electronic device may check the type of the protocol provided by the server, request a get of the identified protocol from the server, and receive a response message of the identified protocol from the server. Thereafter, the electronic device may request the stream metadata table from the server and receive the stream metadata table from the server. More specifically, the electronic device may request a stream metadata table including information of at least one content from a server to the server, and the electronic device may receive a stream metadata table including information of at least one content from the server. Here, the electronic device may check metadata information of at least one content provided by the server. More specifically, the electronic device may analyze the response message of the protocol received from the server or check information on metadata of at least one content by using an API provided by the cloud.

Upon receiving the stream metadata table, the electronic device may verify accessibility of the selected client (402). More specifically, the electronic device may transmit a ProtocolInfo message from the user to the selected client to receive a response signal for the ProtocolInfo message from the selected client. Here, the reason why the electronic device checks the accessibility of the selected client is to check how to transmit metadata information to the corresponding client. That is, since the electronic device according to the present invention performs a relay function for converting the metadata of the specific content streamed from the server to match the format of the DLNA used in the selected client, the accessibility of the selected client is first checked.

Thereafter, the electronic device may convert the metadata of the selected content among the at least one content to match the format used by the selected client among the at least one client connected through the network (403). That is, the electronic device may convert the metadata of any one content selected from the user among the at least one content so as to match the format used in the selected one of the at least one client connected by DLNA. More specifically, the electronic device determines that any one of the at least one content is selected, checks the metadata of the selected content among the metadata information of the at least one identified content, and checks the identified metadata for DLNA. Can be converted to match the format used by the connected client. Here, the electronic device may convert at least one of a URI, a type, a size, a playback time, and a thumbnail URI of content among metadata identified to match a format used in the selected client.

Thereafter, the electronic device may convert the public IP into private IPFH (404). More specifically, the electronic device may convert a public IP address, which is an address on web browsing in which at least one content is displayed, into a private IP address.

The electronic device converting the public IP into the private IP may transmit the private URI and the converted metadata to the client (405). More specifically, the electronic device may transmit the private URI including the converted IP address and the converted metadata by the user. That is, the electronic device may transmit the converted metadata of at least one of the URI, the type, the size, the playback time, and the thumbnail URI of the content among the metadata identified to match the format used in the client together with the private URI.

Thereafter, the electronic device may relay a check for a URI validity from the client (406). That is, when the client requests the electronic device to check the validity of the URI in order to check the validity of the private URI received from the electronic device, the electronic device may relay the check for the validity of the URI.

Finally, the electronic device may stream the selected content from the server and deliver it to the client (407). More specifically, the electronic device may push or pull to the client so that the content streamed from the server can be played on the selected client.

5 is a flowchart illustrating an operation sequence of an electronic device according to the present invention. First, as shown in FIG. 5, the electronic device may receive a stream metadata table including information on at least one content from a server (501). More specifically, the electronic device may check the type of the protocol provided by the server, request a get of the identified protocol from the server, and receive a response message of the identified protocol from the server. Thereafter, the electronic device may request the stream metadata table from the server and receive the stream metadata table from the server. More specifically, the electronic device may request a stream metadata table including information of at least one content from a server to the server, and the electronic device may receive a stream metadata table including information of at least one content from the server.

Upon receiving the stream metadata table including the at least one piece of content information from the server, the electronic device may check accessibility of the selected client (502). More specifically, the electronic device may transmit a ProtocolInfo message from the user to the selected client to receive a response signal for the ProtocolInfo message from the selected client. Here, the reason why the electronic device checks the accessibility of the selected client is to check how to transmit metadata information to the corresponding client. That is, since the electronic device according to the present invention performs a relay function for converting the metadata of the specific content streamed from the server to match the format of the DLNA used in the selected client, the accessibility of the selected client is first checked.

After determining the accessibility of the client, the electronic device may convert metadata of the selected content among the at least one content to match the format used by the selected client among the at least one client connected through the network (503). That is, the electronic device may convert the metadata of any one content selected from the user among the at least one content so as to match the format used in the selected one of the at least one client connected by DLNA. More specifically, the electronic device determines that any one of the at least one content is selected, checks the metadata of the selected content among the metadata information of the at least one identified content, and checks the identified metadata for DLNA. Can be converted to match the format used by the connected client. Here, the electronic device may convert at least one of a URI, a type, a size, a playback time, and a thumbnail URI of content among metadata identified to match a format used in the selected client.

Thereafter, the electronic device may convert a public IP address, which is an address on web browsing in which at least one content is published, into a private IP address (504). More specifically, the electronic device may convert a public IP address, which is an address on web browsing in which at least one content is displayed, into a private IP address.

The electronic device converting the public IP into the private IP may transmit the private URI and the metadata to the client (505). More specifically, the electronic device may transmit the private URI including the converted IP address and the converted metadata by the user. That is, the electronic device may transmit the converted metadata of at least one of the URI, the type, the size, the playback time, and the thumbnail URI of the content among the metadata identified to match the format used in the client together with the private URI.

Thereafter, the electronic device may relay a check for a URI validity from the client (506). That is, when the client requests the electronic device to check the validity of the URI in order to check the validity of the private URI received from the electronic device, the electronic device may relay the check for the validity of the URI.

The electronic device relaying the URI validity check response from the client may stream the selected content from the server and deliver the selected content to the client (507). More specifically, the electronic device may push or pull to the client so that the content streamed from the server can be played on the selected client.

6 is a block diagram illustrating a configuration of an electronic device according to an embodiment of the present disclosure. As shown in FIG. 5, an electronic device according to the present invention includes a protocol extractor 601, a protocol handler 602, a metadata generator 603, and a DLNA DMC (Digital Media Controller). 604).

First, the protocol extractor 601 interprets the protocol provided by the cloud service provider (server) and checks what kind of protocol is provided by the cloud service provider. For example, the protocol extractor 601 receives a stream metadata table containing information of at least one content from a server. In addition, the protocol extractor 601 checks the type of protocol provided by the server, requests the server to get the identified protocol, receives a response message of the protocol confirmed from the server, and transmits the stream metadata table to the server. Ask.

The protocol handler 602 receives the protocol interpreted by the protocol extractor 601 from the protocol extractor 601 and delivers the protocol to the metadata generator 603.

The metadata generator 603 extracts information basically required for the streaming player (client) to play the selected content through the protocol information obtained through the protocol handler 602. For example, the metadata generator 603 converts the metadata of the selected content among the contents to match the format used in the selected client among at least one networked client. In addition, the metadata generator 603 checks metadata information of at least one content provided by the server, analyzes the response message of the received protocol, or uses the API provided by the cloud to determine the metadata of the at least one content. Check the information on. In addition, the metadata generator 603 confirms that any one of the at least one content is selected, checks the metadata of the selected content among the metadata information of the at least one identified content, and confirms the confirmed metadata. Is converted to match the format used by the selected client connected by DLNA. In addition, the metadata generator 603 converts at least one of a URI, a type, a size, a playback time, and a thumbnail URI of the content among the metadata identified to match the format used in the selected client. In addition, the metadata generator 603 converts a public IP address, which is an address on web browsing in which at least one content is placed, into a private IP address, and converts the private URI including the converted IP address into the selected client and the converted metadata. Send. In addition, the metadata generator 603 pushes the content streamed from the server to be played on the selected client, and pulls the content streamed from the server to be played on the selected client.

The DLNA DMC 604 streams the selected content from the server to the selected client and verifies the accessibility of the selected client. The DLNA DMC 604 also sends a ProtocolInfo message to the selected client and receives a response signal to the ProtocolInfo message from the selected client.

7 is a flowchart illustrating an operation sequence of a client according to an embodiment of the present invention. First, as shown in FIG. 7, the client may receive accessibility confirmation from the electronic device from the electronic device (701). More specifically, the client may receive a ProtocolInfo message from the electronic device and transmit a response signal to the ProtocolInfo message to the electronic device. Here, the reason why the electronic device checks the accessibility of the selected client is to check how to transmit metadata information to the corresponding client. That is, since the electronic device according to the present invention performs a relay function for converting the metadata of the specific content streamed from the server to match the format of the DLNA used in the selected client, the accessibility of the selected client is first checked.

The client that has received access from the electronic device may receive a private URI and metadata from the electronic device (702). More specifically, the client may receive both the metadata corresponding to the format of the DLNA used by the electronic device and the private URI of the content. That is, since the electronic device checks the accessibility of the client in step 701, the electronic device may determine how to send metadata to the client. Thus, the client can receive metadata from the electronic device that matches the format of the DLNA.

Thereafter, the client may check the validity of the private URI (703). More specifically, when the client requests the electronic device to check the validity of the URI in order to check the validity of the private URI received from the electronic device, the client may receive a response for checking the URI validity from the electronic device.

After checking the validity of the private URI, the client may stream the content from the electronic device (704). More specifically, the client 103 may receive the metadata corresponding to the format of the DLNA used by the electronic device 102 and the private URI of the content together, and stream arbitrary content.

8 is a block diagram showing the configuration of a client according to an embodiment of the present invention. As shown in FIG. 8, the client according to the present invention may include a controller 801, a communication module 802, and a storage 803.

The controller 801 may control overall operations of the client.

The communication module 802 processes signals transmitted and received through an antenna for voice and data communication. For example, the communication module 802 receives metadata that matches the format of the network being used from the electronic device, and streams arbitrary content from the electronic device. In addition, the communication module 802 receives accessibility from the electronic device. In addition, the communication module 802 receives a ProtocolInfo message from the electronic device, transmits a response signal to the ProtocolInfo message to the electronic device, and receives a private URI of arbitrary content together.

The storage unit 803 may include a program storage unit for storing a program for controlling the operation of the client and a data storage unit for storing data generated while the program is being executed.

In the above-described block configuration, the controller 801 may perform the overall function of the client. In the present invention, the configuration and illustration are separately intended to distinguish each function. Therefore, in the case of actually implementing the product, all of the functions of the client may be configured to be processed by the controller 801, and only some of the functions may be configured to be processed by the controller 801.

Apparently, there are many different ways to modify these embodiments while remaining within the scope of the claims. In other words, there may be many other ways in which the invention may be practiced without departing from the scope of the following claims.

101: server 102: electronic device
103: Client 201: Cloud Service Provider
202: Cloud Proxy 203: Protocol Extractor
204: protocol handler 205: metadata generator
206: DLNA DMC 207: DLNA DMS
208: Client 209: Cloud Service Provider
210: cloud proxy 211: protocol exporter
212: Protocol Handler 213: Metadata Generator
214: DLNA DMS 215: Client
216: cloud service provider
217: Client 218: Protocol Extractor
219: protocol handler 220: metadata generator
301: Resource 302: Supported Resource
601: protocol exporter 602: protocol handler
603: Metadata Generator 604: DLNA DMC
801: control unit 802: communication module
803: storage unit

Claims (34)

A method of operating an electronic device connected to a plurality of client devices on a cloud service system,
Receiving metadata including information of one or more contents from a server;
Selecting a client to play the selected content among the one or more contents among the plurality of client devices;
In response to the selection, determining a metadata format usable by the selected client;
Converting the received metadata of the selected content into the determined format,
Transmitting metadata of the selected content, converted to the determined format, to the selected client, wherein the metadata is used by the selected client to play the selected content,
Receiving the selected content from the server and transmitting the selected content to the selected client,
The conversion process,
Determining the selected content among the one or more contents,
Determining metadata of the selected content from the received metadata;
Determining a protocol matching one or more resources corresponding to the selected content among one or more protocols supported by the selected client,
Based on the determined protocol, converting a metadata format of the selected content into the determined format.
The method of claim 1,
Checking a type of a protocol provided by the server;
Requesting the server for the identified protocol (GET);
Receiving a response message of the checked protocol from the server; And
Requesting the metadata from the server.
The method of claim 2,
And identifying metadata information of the one or more contents provided by the server.
The method of claim 3,
Checking the metadata information of the one or more contents provided by the server,
Analyzing the response message of the received protocol or using the application program interface (API) provided by the cloud to check the information on the metadata of the one or more contents.
The method of claim 1,
The method of claim 1 further comprising the step of checking the accessibility (capability) of the selected client.
The method of claim 5,
Checking the accessibility of the selected client,
Transmitting a ProtocolInfo message to the selected client; And
Receiving a response signal for a ProtocolInfo message from the selected client.
The method of claim 1,
The network connecting the plurality of client devices and the electronic device,
DLNA (Digital Living Network Alliance).
delete The method of claim 1,
Converting the metadata format of the selected content into the determined format,
The metadata format of the selected content is converted based on at least one of a Uniform Resource Identifier (URI), a type, a size, a playback time, and a thumbnail URI of the selected content. Characterized in that the method.
The method of claim 1,
Converting a public IP address, which is an address on web browsing in which the selected content is published, into a private IP address; And
And transmitting to the selected client a private URI including the converted IP address and metadata converted into the determined format.
The method of claim 1,
The process of transmitting the metadata of the selected content,
And pushing the selected content to be played on the selected client.
The method of claim 1,
The process of transmitting the metadata of the selected content,
And pulling the selected content to be played on the selected client.
delete delete delete delete delete An electronic device connected to a plurality of client devices on a cloud service system,
A protocol extractor for receiving metadata including information of one or more contents from a server;
Among the plurality of client devices, select a client to play the selected content from the one or more content,
In response to the selection, determining a metadata format usable by the selected client,
A metadata generator for converting the received metadata of the selected content into the determined format; And
A DLNA Digital Living Network Alliance Digital Media Controller (DNA) for transmitting metadata of the selected content, converted to the determined format, to the selected client,
The metadata generator,
Determine the selected content from the one or more content,
Determine metadata of the selected content from the received metadata,
From among one or more protocols supported by the selected client, determine a protocol matching one or more resources corresponding to the selected content,
And converting a metadata format of the selected content into the determined format based on the determined protocol.
The method of claim 18,
The protocol extractor checks the type of protocol provided by the server, requests the server to get the identified protocol, receives a response message of the confirmed protocol from the server, and sends the metadata to the server. Requesting the electronic device.
The method of claim 19,
And a metadata generator for identifying metadata information of the one or more contents provided by the server.
The method of claim 20,
The metadata generator analyzes the response message of the received protocol or checks the information on the metadata of the one or more contents by using an API provided by the cloud.
The method of claim 18,
The DLNA DMC checks the accessibility of the selected client.
The method of claim 22,
The DLNA DMC transmits a ProtocolInfo message to the selected client, and receives a response signal for a ProtocolInfo message from the selected client.
The method of claim 18,
The network connecting the plurality of client devices and the electronic device is DLNA.
delete The method of claim 18,
And the metadata generator converts the metadata format of the selected content based on at least one of a URI, a type, a size, a playback time, and a thumbnail URI of the selected content.
The method of claim 18,
The metadata generator converts a public IP address, which is an address on web browsing in which the selected content is displayed, into a private IP address, and converts the private URI including the converted IP address into the selected client into the determined format. And transmitting the metadata.
The method of claim 18,
The metadata generator pushes the selected content to be played on the selected client.
The method of claim 18,
And the metadata generator pulls the selected content so that the selected content can be played on the selected client. delete delete delete delete delete

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