JP2014531147A - Electronic apparatus and method for transmitting contents on cloud system to devices connected to DLNA - Google Patents

Abstract

Provided is an electronic apparatus and method for transmitting content on a cloud system to a device connected to a DLNA. An operation method of an electronic device on a cloud service system, comprising: receiving a stream metadata table including at least one piece of content information from a server; Converting to match a format used by a selected client from at least one connected client, streaming the selected content from the server, and transmitting the selected content to the selected client; And an electronic apparatus and method for transmitting content on a cloud system to a device connected to DLNA.

Description

  The present invention relates to a cloud system.

  A cloud service is an Internet-based computer technology that provides data, utilities, and the like stored on a server on the Internet to a client (client) terminal such as a computer or mobile phone when a user needs it. is there. A system for efficiently providing resources of cloud infrastructure is based on a user's own terminal and does not recognize local storage and various dissimilar storage separately, and responds to various requests. It is possible to provide an elastic storage provisioning method that dynamically expands and uses a storage. When the client receives a file access request from the application, the client determines whether to process the file access request as a local file access request for the local storage or as a cloud file access request for a cloud storage connected via the Internet. The relay server receives the cloud file access request and supports the client to use the cloud server.

  A conventional cloud service has a two-tier structure that performs a function of providing meta data of the cloud infrastructure resource via a relay server when accessing the cloud infrastructure resource. As a result, the conventional cloud service determines whether the actually provided content exists locally or on the cloud, and provides suitable content. However, the above-described method has a problem that the relay server only makes a determination on file access, and the content cannot be converted into a form suitable for the client.

  The present invention has been proposed in order to solve the above-described problems of the conventionally proposed method, and an object of the present invention is to provide each client connected to DLNA with content received from a cloud server. It is an object to provide an apparatus and a method for reproducing data on a computer.

  It is another object of the present invention to provide an apparatus and method for changing metadata provided on a cloud system to match a format of a client connected to DLNA.

  In order to achieve the above object, an operation method of an electronic device according to the present invention is an operation method of an electronic device on a cloud service system, wherein the stream metadata table includes at least one piece of content information from a server. Receiving the content, converting the metadata of the content selected from the content to a format used by the client selected from at least one client connected to the network, and from the server And a process of streaming the selected content and transmitting it to the selected client.

  Preferably, a step of confirming a type of protocol provided by the server, a step of requesting the server to get the confirmed protocol, and a step of receiving a response message of the confirmed protocol from the server, And requesting the stream metadata table from the server.

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

  Preferably, the step of confirming the metadata information of the at least one content provided by the server analyzes the response message of the received protocol, or uses the API provided by the cloud. Information related to metadata of one content can be confirmed.

  Preferably, the method may further include confirming the accessibility of the selected client.

  Preferably, the step of confirming the accessibility of the selected client includes a step of transmitting a ProtocolInfo message to the selected client and a step of receiving a response signal to the ProtocolInfo message from the selected client. be able to.

  Preferably, the network can be DLNA.

  Preferably, the process of converting the metadata of the content selected from the content so as to match the format used by the client selected from at least one client connected to the network includes any of the at least one content. A process of confirming that one content has been selected, a process of confirming the metadata of the selected content among the information of the metadata of the confirmed at least one content, and the confirmed metadata Converting to match the format used by the selected client concatenated to DLNA.

  Preferably, the process of converting the identified metadata to match the format used by the selected client concatenated to DLNA so as to match the format used by the selected client, A process of converting at least one of the URI, type, size, playback time, and thumbnail URI of the content among the confirmed metadata may be included.

  Preferably, a process of converting a public IP address, which is an address on a web browser on which the at least one content is posted, into a private IP address, and a private client including the converted IP address in the selected client And transmitting the URI and the converted metadata.

  Preferably, the process of streaming the selected content from the server and transmitting it to the selected client can be pushed so that the content streamed from the server is played by the selected client. .

  Preferably, the process of streaming the selected content from the server and transmitting it to the selected client can be pulled so that the content streamed from the server can be played back by the selected client. .

  According to an aspect of the present invention, a client operating method for achieving the above-described object is a client operating method on a cloud service system, which includes receiving metadata from an electronic device that matches a network format in use. And a process of streaming arbitrary content from the electronic device.

  Preferably, the method may further include a process of confirming accessibility through the electronic device.

  Preferably, the step of confirming the accessibility via the electronic device may include a step of receiving a ProtocolInfo message from the electronic device and a step of transmitting a response signal to the ProtocolInfo message to the electronic device.

  Preferably, in the process of receiving metadata matching the format of the network in use from the electronic device, the private URI of the arbitrary content can be received together.

  Preferably, the network can be DLNA.

  To achieve the above object, an electronic device according to the present invention is an electronic device on a cloud service system, and receives a stream metadata table including at least one piece of content information from a server. (Protocol Extractor) and a metadata generator (MetaData Generator) that converts the metadata of the content selected from the content so as to match the format used by the client selected from at least one client connected to the network. DLNA DMC (Digital Media Controller) for streaming the selected content from the server and transmitting the selected content to the selected client It is characterized by the structure to include.

  Preferably, the protocol extractor confirms the type of protocol provided by the server, requests the server to get the confirmed protocol, and receives a response message of the confirmed protocol from the server. The server can request the stream metadata table.

  Preferably, the information processing apparatus may further include a metadata generator for confirming metadata information of the at least one content provided by the server.

  Preferably, the metadata generator can analyze the received response message of the protocol or use the API provided by the cloud to check information regarding the metadata of the at least one content.

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

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

  Preferably, the network can be DLNA.

  Preferably, the metadata generator confirms that any one content of the at least one content is selected, and the metadata content of the confirmed at least one content is selected. The metadata can be verified and the confirmed metadata can be converted to match the format used by the selected client linked to DLNA.

  Preferably, the metadata generator selects at least one of a URI, a type, a size, a playback time, and a thumbnail URI of the content among the confirmed metadata so as to match a format used by the selected client. Can be converted.

  Preferably, the metadata generator converts a public IP address, which is an address on a web browser on which the at least one content is posted, into a private IP address, and the selected IP address is transmitted to the selected client. The included private URI and the converted metadata can be transmitted.

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

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

  The client according to the feature of the present invention for achieving the above-mentioned object is a client on a cloud service system, receives metadata matching the format of the network in use from the electronic device, and receives any metadata from the electronic device. It includes a communication module that streams content and a control unit that controls the overall operation.

  Preferably, the communication module can confirm accessibility through the electronic device.

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

  Preferably, the network can be DLNA.

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

It is a figure for demonstrating the whole client which transmits the content on the cloud system which concerns on this invention to the device connected with DLNA. It is a figure which shows one Embodiment which streams a content from the server on the cloud system which concerns on this invention, and transmits to a client. It is a figure which shows one Embodiment which streams a content from the server on the cloud system which concerns on this invention, and transmits to a client. It is a figure which shows one Embodiment which streams a content from the server on the cloud system which concerns on this invention, and transmits to a client. FIG. 5 is a diagram illustrating an embodiment of media protocol mapping and cloud content mapping according to the present invention. FIG. 5 is a diagram illustrating an embodiment of media protocol mapping and cloud content mapping according to the present invention. FIG. 5 is a diagram illustrating an embodiment of media protocol mapping and cloud content mapping according to the present invention. 4 is a flowchart illustrating a flow of operations of a server, an electronic device, and a client according to an embodiment of the present invention. It is a flowchart which shows the flow of operation | movement of the electronic device which concerns on this invention. It is a block diagram which shows the structure of the electronic device by one Embodiment of this invention. 4 is a flowchart illustrating a flow of operation of a client according to an embodiment of the present invention. It is a block diagram which shows the structure of the client by one Embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Further, in describing the present invention, when it is determined that a specific description related to a related known function or configuration may obscure the gist of the present invention, detailed description thereof is omitted. Moreover, the term mentioned later is a term defined in view of the function in this invention, and this may differ according to a user, an operator's intention, or a custom. Therefore, the definition should be made based on the entire contents of this specification.

  FIG. 1 is a diagram for explaining an entire client that transmits content on a cloud system according to the present invention to a device connected to DLNA. As shown in FIG. 1, the present invention can be configured by a server 101, an electronic device 102, and a client 103 on a cloud system. Here, the cloud service is a client connected to the server and can be defined as a service for downloading and using content stored in the server. In other words, it is a computer service in which computer resources such as hardware and software that exist in an intangible form like a cloud are rented and used by the client as much as necessary, and the usage fee is paid for this. It means a technology that provides computer resources that are integrated in different physical locations using virtualization technology. For example, a client using a cloud service can connect to a server and download and display desired content regardless of time or place even if large-capacity content is not stored in the client. .

  The server 101 on the cloud system can transmit at least one stored content to the electronic device 102. More specifically, the server 101 can transmit a specific content to the electronic device 102 in response to a request for streaming of the specific content from the electronic device 102. Hereinafter, the operation flow of the server in the present invention will be described in detail. First, the server 101 can communicate with the electronic device 102 using a protocol provided on the cloud system. Upon receiving a request for a protocol (GET) from the electronic device 102 that has confirmed the protocol, the server 101 A protocol response message can be sent to the device 102. Upon receiving the protocol response message to the electronic device 102, the cloud server 101 receives a request for a stream metadata table including at least one piece of content information from the electronic device 102, and the electronic device 102 receives the requested stream meta data. A data table can be sent. Next, the server 101 can receive a request for a stream of any one of 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 can receive a stream metadata table including at least one piece of content information from the server 101. More specifically, the electronic device 102 confirms the type of protocol provided by the server 101, requests the server 101 to obtain the confirmed protocol, and receives a response message of the confirmed protocol from the server 101. can do. Here, the electronic device 102 can confirm metadata information of at least one content provided by the server 101. More specifically, the electronic device analyzes the response message of the protocol received from the server 101 or uses the API (Application Program Interface) provided by the cloud to obtain information on at least one content metadata. Can be confirmed. Next, the electronic device 102 can 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 request a stream metadata table including at least one piece of content information, and the electronic device 102 includes at least one piece of content information from the server 101. Stream metadata tables can be received.

  Next, the electronic device 102 can confirm the accessibility of the selected client 103. More specifically, the electronic device 102 can transmit a ProtocolInfo message to the client 103 selected by the user and receive a response signal for the ProtocolInfo message from the selected client 103. Here, the reason why the electronic device 102 confirms the accessibility of the selected client 103 is to confirm how metadata information should be transmitted to the client 103. That is, the electronic device 102 according to the present invention is selected because it performs a relay function for converting the metadata of the specific content streamed from the server 101 so as to match the DLNA format used by the selected client 103. The accessibility of the client 103 is confirmed preferentially. Here, DLNA (Digital Living Network Alliance) is a new official organization that leads the commercialization of the global home network. DHWG (Digital Home Working Group) established in June 2003 has been renamed It has been changed. DLNA connects home appliances such as PCs at home with a wired or wireless network, enables sharing of the Internet and data, sharing of peripheral devices such as scanners and printers, and mutual control. In conjunction with an external network using a portable information terminal, it can be defined as a system capable of remotely controlling home appliances such as a home TV, refrigerator, air conditioner, DVD player, digital camera and the like freely and always anywhere.

  Next, the electronic device 102 converts the metadata of the content selected from the at least one content to match the format used by the client 103 selected from the at least one client 103 connected to the network. Can do. That is, the electronic device 102 matches the metadata of any one of the at least one content selected by the user with the format used by the client 103 selected from the at least one client 103 connected to the DLNA. Can be converted to More specifically, the electronic device 102 confirms that any one of the at least one content is selected, and the metadata of the content selected from the confirmed metadata information of the at least one content And the confirmed metadata can be converted to match the format used by the selected client 103 linked to the DLNA. Here, the electronic device 102 has a URI (Uniform Resource Identifier), a type (type), a size (size), and a playback time of the content among the confirmed metadata so as to match the format used by the selected client. At least one of (Duration) and Thumbnail URI can be converted. Next, the electronic device 102 converts a public IP address, which is an address on a web browser on which at least one content is posted, into a private IP address, and sends it to the selected client 103. The private URI including the converted IP address and the converted metadata can be transmitted. The electronic device 102 can then stream the selected content from the server 101 and transmit it to the selected client 103. More specifically, the electronic device 102 can push or pull so that the content streamed from the server 101 is played by the selected client 103.

  The client 103 on the cloud system can confirm the accessibility via the electronic device 102. More specifically, the client 103 can receive a ProtocolInfo message from the electronic device and transmit a response signal to the ProtocolInfo message to the electronic device 102. The reason why the electronic device 102 confirms the accessibility of the selected client 103 is to confirm how metadata information is transmitted to the client 103. That is, the electronic device 102 according to the present invention is selected because it performs a relay function for converting the metadata of the specific content streamed from the server 101 so as to match the DLNA format used by the selected client 103. The accessibility of the client 103 is confirmed preferentially. The client 103 can then receive metadata from the electronic device 102 that matches the format of the network in use and stream any content. More specifically, the client 103 can receive the metadata matching the format of the DLNA being used and the private URI of the content from the electronic device 102, and can stream any content.

  2A to 2C are diagrams illustrating an embodiment in which content is streamed from a server on a cloud system according to the present invention and transmitted to a client. FIG. 2A is a diagram illustrating an embodiment in which content is streamed from a server on a cloud system according to the present invention and pushed to a client. First, as shown in FIG. 2A, the cloud proxy 202 according to the present invention includes a protocol extractor 203, a protocol handler 204, a metadata generator 205, a DLNA DMC (Digital Media Controller). ) 206 and DLNA DMS (Digital Media Server) 207. The protocol extractor 203 can interpret the protocol provided by the cloud service provider 201 and confirm what kind of protocol is provided to the cloud service provider. For example, when the protocols provided by the cloud service provider 201 are HTTP (Hyper Text Transfer Protocol), RTP (Real-time Transfer Protocol), and MMS (Multimedia Messaging Service), the protocol extractor 203 is the cloud service provider. It can be confirmed that the protocols provided by 201 are HTTP, RTP and MMS, respectively. The protocol handler 204 receives the protocol interpreted by the protocol extractor 203 from the protocol extractor 203 and transmits it to the metadata generator 205. For example, when the protocol interpreted by the protocol extractor 203 is HTTP, the protocol handler 204 can receive the HTTP protocol from the protocol extractor 203 and transmit it to the metadata generator 205. The metadata generator 205 extracts information necessary for the streaming player (client 208) to reproduce the selected content from the protocol information obtained via the protocol handler 204. The DLNA DMC 206 is a device that can push or control the content that the DMS has in DLNA. The DLNA DMS 207 is a device that functions as a server having content in the DLNA. More specifically, the DLNA DMS 207 can stream the content streamed by the client 208 as if it were stored without substantially storing the content streamed from the cloud service provider 201. A DLNA DMR (Digital Media Renderer) provided in the client 208 has a function of playing back DMS content. In the present embodiment, it is indicated that the cloud proxy 202 pushes specific content to the client 208. More specifically, the cloud proxy 202 transmits a command word that instructs the client to play specific content. Next, the DLNA DMR provided in the client 208 can reproduce the contents of the DMS.

  FIG. 2B is a diagram showing an embodiment in which a content streamed from a server on a cloud system according to the present invention is pulled to a client. First, as shown in FIG. 2B, the cloud proxy 210 according to the present invention can be configured by a protocol extractor 211, a protocol handler 212, a metadata generator 213, and a DLNA DMS 214. The protocol extractor 211 can interpret the protocol provided by the cloud service provider 209 and check what kind of protocol is provided to 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 indicates that the protocols provided by the cloud service provider 209 are HTTP, RTP, and MMS, respectively. Can be confirmed. The protocol handler 212 receives the protocol interpreted by the protocol extractor 211 from the protocol extractor 211 and transmits it to the metadata generator 213. For example, when the protocol interpreted by the protocol extractor 211 is RTP, the protocol handler 212 can receive the RTP protocol from the protocol extractor 211 and transmit it to the metadata generator 213. The metadata generator 213 extracts information necessary for the streaming player (client 215) to play back the selected content from the protocol information obtained via the protocol handler 212. The DLNA DMS 214 is a device that functions as a server having content in the DLNA. More specifically, the DLNA DMS 214 can stream the content streamed by the client 215 as if it was stored without substantially storing the content streamed from the cloud service provider 209. The DLNA DMR provided in the client 215 performs the function of playing back the contents of the DMS. In the present embodiment, it is indicated that the cloud proxy 210 pulls specific content to the client 215. More specifically, the cloud proxy 210 receives an instruction word for instructing to play a specific content from the client 215, and causes the DLNA DMR provided in the client 215 to reproduce the content of the DMS. .

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

  3A to 3C are diagrams illustrating an embodiment of media protocol mapping and cloud content mapping according to the present invention. FIG. 3A is a diagram illustrating an embodiment of media protocol mapping according to the present invention. The cloud proxy according to the present invention can match the resource information of the item that the user wants to play with the DMR protocol information, create a common matching list, and call the DMR highest priority protocol list. For example, after generating eight resources corresponding to the content item 2, the cloud proxy searches for three resources that are resources supported by the DMR. As a result, the cloud proxy can confirm that the resource No. 5 generated by the proxy maps to the resource No. 3 supported by the DMR. Also, the cloud proxy can convert an external public IP into a private IP, and can have a relay server for checking the validity of the DMR. This server can respond by adding DLNA to the reverse-NAT and DMR HTTP head commands.

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

  FIG. 4 is a flowchart showing a flow of operations of a server, an electronic device, and a client according to an embodiment of the present invention. First, the electronic apparatus can receive a stream metadata table including information of at least one content from the server (401). More specifically, the electronic device can confirm the type of protocol provided by the server, request the server for a confirmed protocol, and receive a response message of the confirmed protocol from the server. The electronic device can then request the stream metadata table from the server and receive the stream metadata table from the server. More specifically, the electronic apparatus requests a stream metadata table including at least one piece of content information from the server, and the electronic apparatus transmits a stream metadata table including at least one piece of content information from the server. Can be received. Here, the electronic apparatus can check the metadata information of at least one content provided by the server. More specifically, the electronic device can analyze the response message of the protocol received from the server, or can confirm information regarding the metadata of at least one content by using an API provided by the cloud.

  The electronic device that has received the stream metadata table can check the accessibility of the selected client (402). More specifically, the electronic device can transmit a ProtocolInfo message to a client selected by the user and receive a response signal for the ProtocolInfo message from the selected client. Here, the reason why the electronic device confirms the accessibility of the selected client is to confirm how the metadata information is transmitted to the client. In other words, the electronic device according to the present invention performs a relay function for converting the metadata of the specific content streamed from the server so as to match the DLNA format used by the selected client. Check accessibility first.

  The electronic device may then convert the metadata of the content selected from the at least one content to match the format used by the client selected from the at least one client coupled to the network ( 403). In other words, the electronic apparatus matches the metadata of any one content selected by the user among the at least one content with the format used by the client selected from at least one client connected to the DLNA. Can be converted. More specifically, the electronic device confirms that any one of the at least one content is selected, and selects the metadata of the content selected from the confirmed metadata information of the at least one content. The confirmed and confirmed metadata can be converted to match the format used by the selected client concatenated to DLNA. Here, the electronic device may convert at least one of the content URI, type, size, playback time, and thumbnail URI of the confirmed metadata so as to match the format used by the selected client. it can.

  The electronic device can then convert the public IP to a private IP (404). More specifically, the electronic device can convert a public IP address, which is an address on a web browser on which at least one content is posted, into a private IP address.

  The electronic device that has converted the public IP into the private IP can transmit the private URI and the converted metadata to the client (405). More specifically, the electronic device can send a private URI including the translated IP address and translated metadata to the client by the user. That is, the electronic apparatus converts the metadata in which at least one of the URI, type, size, playback time, and thumbnail URI of the content among the confirmed metadata is converted so as to match the format used by the client together with the private URI. Can be sent.

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

  Finally, the electronic device can stream the selected content from the server and transmit it to the client (407). More specifically, the electronic device can be pushed or pulled to the client so that the content streamed from the server is played on the selected client.

  FIG. 5 is a flowchart showing an operation flow of the electronic apparatus according to the present invention. First, as shown in FIG. 5, the electronic apparatus can receive a stream metadata table including information of at least one content from the server (501). More specifically, the electronic device can confirm the type of protocol provided by the server, request the server to get the confirmed protocol, and receive a response message of the confirmed protocol from the server. . The electronic device can then request the stream metadata table from the server and receive the stream metadata table from the server. More specifically, the electronic device requests a stream metadata table including at least one piece of content information from the server, and the electronic device receives stream metadata including at least one piece of content information from the server. A table can be received.

  The electronic device that has received the stream metadata table including at least one piece of content information from the server can confirm the accessibility of the selected client (502). More specifically, the electronic device can transmit a ProtocolInfo message to a client selected by the user, and can receive a response signal to the ProtocolInfo message from the selected client. Here, the reason why the electronic device confirms the accessibility of the selected client is to confirm how the metadata information should be transmitted to the client. In other words, the electronic device according to the present invention performs a relay function for converting the metadata of the specific content streamed from the server so as to match the DLNA format used by the selected client. Check accessibility first.

  The electronic device that has confirmed the accessibility of the client converts the metadata of the content selected from at least one content so as to match the format used by the client selected from at least one client connected to the network. (503). In other words, the electronic apparatus matches the metadata of any one content selected by the user among the at least one content with the format used by the client selected from at least one client connected to the DLNA. Can be converted. More specifically, the electronic device confirms that any one of the at least one content is selected, and selects the metadata of the content selected from the confirmed metadata information of the at least one content. The confirmed and confirmed metadata can be converted to match the format used by the selected client concatenated to DLNA. Here, the electronic device can convert at least one of the content URI, type, size, playback time, and thumbnail URI among the metadata confirmed to match the format used by the selected client. .

  Next, the electronic device can convert a public IP address, which is an address on a web browser on which at least one content is posted, into a private IP address (504). More specifically, the electronic device can convert a public IP address, which is an address on a web browser on which at least one content is posted, into a private IP address.

  The electronic device that has converted the public IP into the private IP can transmit the private URI and metadata to the client (505). More specifically, the electronic device can send a private URI including the translated IP address and translated metadata to the client by the user. That is, the electronic apparatus converts the metadata in which at least one of the URI, type, size, playback time, and thumbnail URI of the content among the confirmed metadata is converted so as to match the format used by the client together with the private URI. Can be sent.

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

  The electronic device that relayed the URI validity check from the client can stream the content selected from the server and transmit it to the client (507). More specifically, the electronic device can be pushed or pulled to the client so that the content streamed from the server is played on the selected client.

  FIG. 6 is a block diagram showing a configuration of an electronic device according to an embodiment of the present invention. As shown in FIG. 5, an electronic apparatus 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. Can be configured.

  First, the protocol extractor 601 interprets a protocol provided by a cloud service provider (server) and confirms what type of protocol is provided by the cloud service provider. For example, the protocol extractor 601 receives a stream metadata table including information on at least one content from the server. Also, the protocol extractor 601 confirms the type of protocol provided by the server, requests the server for the confirmed protocol, receives a response message for the confirmed protocol from the server, and sends the stream meta data to the server. Request a data table.

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

  The metadata generator 603 extracts information basically necessary for the streaming player (client) to play the selected content from the protocol information obtained via the protocol handler 602. For example, the metadata generator 603 converts the metadata of the content selected from the content to match the format used by the client selected from at least one client connected to the network. Further, the metadata generator 603 confirms metadata information of at least one content provided by the server, analyzes the received response message of the protocol, or uses at least one API provided by the cloud. Information about the metadata of one content. Further, the metadata generator 603 confirms that any one of the at least one content is selected, and confirms the metadata of the selected content from the information of the confirmed at least one content metadata. Then, the confirmed metadata is converted to match the format used by the selected client connected to the DLNA. Also, the metadata generator 603 converts at least one of the content URI, type, size, playback time, and thumbnail URI of the confirmed metadata so as to match the format used by the selected client. Further, the metadata generator 603 converts a public IP address, which is an address on a web browser on which at least one content is posted, into a private IP address, and includes a private URI including the IP address converted into the selected client. And send the converted metadata. Also, the metadata generator 603 pushes the content streamed from the server to be played back by the selected client, and pulls the content streamed from the server to be played back by the selected client.

  The DLNA DMC 604 streams the selected content from the server, transmits it to the selected client, and confirms the accessibility of the selected client. Also, the DLNA DMC 604 transmits a ProtocolInfo message to the selected client, and receives a response signal for the ProtocolInfo message from the selected client.

  FIG. 7 is a flowchart showing a flow of operations of the client according to the embodiment of the present invention. First, as shown in FIG. 7, the client can confirm the accessibility via the electronic device (701). More specifically, the client can 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 confirms the accessibility of the selected client is to confirm how the metadata information should be transmitted to the client. In other words, the electronic device according to the present invention performs a relay function for converting the metadata of the specific content streamed from the server so as to match the DLNA format used by the selected client. Check accessibility first.

  The client that has confirmed the accessibility via the electronic device can receive the private URI and metadata from the electronic device (702). More specifically, the client can receive both the metadata matching the format of the DLNA in use and the content private URI from the electronic device. That is, since the electronic device has confirmed the accessibility of the client in the previous step (701), it can determine how the metadata should be transmitted to the client. Therefore, the client can receive metadata that matches the DLNA format from the electronic device.

  The client can then check the validity of the private URI (703). More specifically, i.e., when the client requests the electronic device to check for URI validity in order to check the validity of the private URI received from the electronic device, the client checks the URI validity from the electronic device. Can receive a relay response.

  A client that checks the validity of the private URI can stream content from the electronic device (704). More specifically, the client 103 can receive the metadata matching the format of the DLNA being used and the private URI of the content from the electronic device 102, and can stream any content.

  FIG. 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 can be configured by a control unit 801, a communication module 802, and a storage unit 803.

  The control unit 801 can control the overall operation of the client.

  The communication module 802 processes signals transmitted and received via an antenna for voice and data communication. For example, the communication module 802 receives metadata that matches the format of the network in use from the electronic device, and streams arbitrary content from the electronic device. In addition, the communication module 802 confirms accessibility through the electronic device. The communication module 802 also 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 any content.

  The storage unit 803 can be configured by a program storage unit that stores a program for controlling the operation of the client and a data storage unit that stores data generated during the execution of the program.

  In the block configuration described above, the control unit 801 can perform the overall functions of the client. In the present invention, this is separately configured for the purpose of distinguishing each function. Therefore, when the product is actually implemented, all of the client functions may be processed by the control unit 801, or only a part of the functions may be processed by the control unit 801.

  It goes without saying that there are various ways in which such embodiments can be modified while remaining within the scope of the claims. In other words, there may be various other methods that can implement the present invention without departing from the scope of the claims below.

101 Server 102 Electronic Device 103 Client 202 Cloud Proxy 203 Protocol Extractor 204 Protocol Handler 205 Metadata Generator 206 DLNA DMC
207 DLNA DMS

Claims (15)

An operation method of an electronic device on a cloud service system,
Receiving a stream metadata table including information of at least one content from a server;
Converting metadata of content selected from the content to match a format used by a client selected from at least one client connected to a network;
Streaming the selected content from the server and communicating it to the selected client. An electronic device on a cloud service system,
A protocol extractor that receives a stream metadata table including at least one piece of content information from the server;
A metadata generator (MetaData Generator) for converting metadata of content selected from the content to match a format used by a client selected from at least one client connected to a network;
A DLNA DMC (Digital Media Controller) that streams the selected content from the server and communicates it to the selected client. A method according to claim 1 or an apparatus according to claim 2, comprising:
Confirming the type of protocol provided by the server;
Confirming metadata information of the at least one content provided by the server;
Requesting the server to get the confirmed protocol (GET);
Receiving a response message of the confirmed protocol from the server;
Requesting the stream metadata table from the server. Confirming metadata information of the at least one content provided by the server includes:
The method according to claim 3, wherein the response message of the received protocol is analyzed, or the information about the metadata of the at least one content is confirmed using an API provided by the cloud. apparatus. A method according to claim 1 or an apparatus according to claim 2, comprising:
A method or apparatus further comprising the step of confirming the accessibility of the selected client. The process of confirming the accessibility of the selected client includes:
Sending a ProtocolInfo message to the selected client;
6. The method or apparatus of claim 5, comprising: receiving a response signal to the ProtocolInfo message from the selected client. A method according to claim 1 or an apparatus according to claim 2, comprising:
The method or apparatus, wherein the network is a DLNA (Digital Living Network Alliance). A method according to claim 1 or an apparatus according to claim 2, comprising:
The process of converting the metadata of the content selected from the content to match the format used by the client selected from at least one client connected to the network,
Confirming that any one of the at least one contents is selected;
Confirming the metadata of the selected content among the confirmed metadata information of the at least one content;
Transforming the identified metadata to match the format used by the selected client concatenated to DLNA. The process of converting the confirmed metadata to match the format used by the selected client concatenated to DLNA comprises:
Of the confirmed metadata, the URI (Uniform Resource Identifier), type (type), size (size), playback time (duration), and thumbnail (of the confirmed metadata are matched with the format used by the selected client. thumbnail) including converting at least one of the URIs;
Converting a public IP address, which is an address on a web browser on which the at least one content is posted, into a private IP address;
9. The method or apparatus of claim 8, further comprising: transmitting a private URI including the translated IP address and the transformed metadata to the selected client. A method according to claim 1 or an apparatus according to claim 2, comprising:
Streaming the selected content from the server and communicating it to the selected client comprises:
A method or apparatus for pushing or pulling content streamed from the server to be played on the selected client. A method of operating a client on a cloud service system,
Receiving metadata from the electronic device that matches the format of the network in use;
Streaming any content from the electronic device. A client on a cloud service system,
A communication module that receives metadata matching the format of the network in use from the electronic device and streams any content from the electronic device;
And a control unit that controls the overall operation. A method according to claim 11 or a client according to claim 12, comprising:
The network is DLNA;
A method or client comprising the step of checking accessibility via the electronic device. The process of confirming accessibility via the electronic device includes:
Receiving a ProtocolInfo message from the electronic device;
The method or the client according to claim 13, further comprising: transmitting a response signal to the ProtocolInfo message to the electronic device. A method according to claim 11 or a client according to claim 12, comprising:
Receiving metadata from the electronic device that matches the format of the network in use;
A method or client characterized by receiving a private URI of the arbitrary content together.

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