JP4944940B2 - Media information sharing system and media information sharing method - Google Patents

Description

  The present invention relates to a media information sharing system and a media information sharing method for sharing media information such as photographs, music, and video between devices connected to different network segments.

  2. Description of the Related Art In recent years, with the advancement of network technology, a technology related to a home network for connecting a general personal computer or home appliance via a LAN has become widespread.

  By constructing a home network, it is possible to share and use an Internet connection line, a printer, or a file among a plurality of computers in the home.

  By the way, when media information such as photos, music, video, etc. is stored in a device connected to this home network, there is a case where it is desired to view them on a device connected to a network of a segment different from the home network. .

  As a technique for sharing information between different networks, there is an invention described in Patent Document 1. According to the present invention, when a plurality of communication apparatuses connected to different networks have identifiers uniquely assigned on each network stored in a central server, a connection request is made between different networks. The virtual communication path is generated between the corresponding devices based on the association information.

  By using the technology of the present invention, direct communication between terminals on different networks is possible.

JP 2009-182660 A

  However, since a private IP address is used for communication between devices in the home network, and this private IP address cannot be known from the outside, it is described in Patent Document 1 between terminals of home networks in different segments. There was a problem that it was not possible to communicate directly using technology.

  Therefore, an object of the present invention is to provide a media information sharing system and a media information sharing method capable of easily sharing media information between devices in different network segments.

A media information sharing system of the present invention for solving the above-described problem is different from the first home network, and a first home gateway connected to a digital media server device compliant with the DLNA standard via a first home network. A second home gateway connected to a digital media player device conforming to the DLNA standard via a second home network constructed in a segment is connected via an IP network, and the digital media player device uses the digital media server device. in the media information sharing system that performs content acquisition process to view stored content information, the digital media server device, browsing information is a storage area information of the content information and the content information serial When the content acquisition request for acquiring the content information from the first home gateway is acquired, the response is acquired by acquiring the content information from the storage unit and returning the content information to the first home gateway. The first home gateway receives a proxy communication setting process execution instruction for performing communication with the digital media player device as an access source and the digital media server device as an access destination. The IP address used for communication on the IP network side of the second home gateway is acquired and set as information on a device that permits reception of an access request to the digital media server device, and the digital used for the access The first home network of the media server device When the browsing request for acquiring the browsing information from the second home gateway is received, the browsing number transmitted to the stored port number and stored in the digital media server device is stored. The information is acquired, and the IP address and port number on the first home network side of the digital media server device included in URL information as storage area information of each content information added to the acquired browsing information are When rewriting the IP address and port number on the IP network side of one home gateway and returning the information to the second home gateway and receiving the content acquisition request sent from the second home gateway to the digital media server device, The The IP address and port number on the IP network side of the first home gateway included in the URL information as the storage area information of the content information added to the content acquisition request is used as the first home network of the digital media server device. The IP address and the port number on the side are rewritten, transmitted to the digital media server device, and the content information returned from the digital media server device when the content acquisition request is transmitted is returned to the second home gateway. and a 1 proxy response unit, the digital media player device, generates a content acquisition request to acquire the browsing request and content information for obtaining browsing information stored in the digital media server device An operation unit that, displays the browsing information returned from the home gateway based on the browsing request generated by the operation unit, which is returned from the second home gateway based on the generated content acquisition request The second home gateway generates information including an IP address and a port number on the first home network side of the digital media server device as identification information of an access destination. Further, device description information is generated by rewriting the IP address and port number in the information with the IP address and port number on the second home network side of the second home gateway, and connected to the second home network. Device Set as destination information when access is requested barrel media server device, when the device description request requesting information accessible device from the digital media player device is broadcast in said second network A UPnP unit that transmits the set device description information to the digital media player device as accessible device information, IP address information used in communication on the IP network side of the first home gateway, and the content The port number used in the acquisition process is acquired, set as transfer destination information when access is requested from the digital media player device to the digital media server device, and the device description information is transmitted. Accordingly, when the browsing request addressed to the digital media server is received from the digital media player device, the browsing request is transferred to the first home gateway based on the transfer destination information, and the browsing information is transferred from the first home gateway by the transfer. When received, the IP address and the port number on the IP network side of the first home gateway included in the URL information as the storage area information of each content information added to the browsing information is the first address of the second home gateway. 2. Rewrite the IP address and port number on the home network side, send it to the digital media player device, and obtain a content acquisition request from the digital media player device based on the browsing information sent Then, the IP address and port number on the second home network side of the second home gateway included in the URL information as the storage area information of the content information added to the content acquisition request are set as the transfer destination information. The content sent back from the first home gateway by rewriting the IP address information and the port number on the IP network side of the first home gateway based on the first home gateway and transferring it to the first home gateway and transferring the content acquisition request And a second proxy response unit that returns information to the digital media player device .

The media information sharing system further includes a setting server device connected to the first home gateway and the second home gateway via the IP network, the setting server device serving as the identification information of the access destination. , Acquiring and storing the IP address and port number on the first home network side of the digital media server device, further acquiring the IP address and port number on the second home network side of the second home gateway, From the device connected to the second home network, the information obtained by rewriting the stored identification information of the access destination with the acquired IP address and port number of the second home network on the second home network side is generated. In the digital media server device May be transmitted in order to set as the device description information as the destination information when access is requested UPnP portion of the second home gateway.

In addition, the media information sharing method of the present invention includes a first home gateway connected to a digital media server device compliant with the DLNA standard via a first home network, and a first segment constructed in a segment different from the first home network. Content information stored in the digital media server device by the digital media player device connected to the second home gateway connected to the digital media player device compliant with the DLNA standard via the home network In the media information sharing method for performing content acquisition processing for viewing content, the digital media server device stores content information and browsing information that is storage area information of the content information; When an instruction to execute proxy communication setting processing for performing communication with the digital media player device as an access source and the digital media server device as an access destination is input, the IP gateway of the second home gateway The first home network of the digital media server device used for acquiring the IP address used for communication on the network side and setting it as information of a device that permits reception of an access request to the digital media server device Storing a port number on the side, and the second home gateway generates information including an IP address and a port number on the first home network side of the digital media server device as access destination identification information, and In this information Device description information is generated by rewriting the P address and port number with the IP address and port number on the second home network side of the second home gateway, and the digital media server is generated from a device connected to the second home network. A step of setting as transmission destination information when access is requested to the device; and the second home gateway is used in the IP address information used in communication on the IP network side of the first home gateway and the content acquisition process A port number to be acquired and set as transfer destination information when access to the digital media server device is requested from the digital media player device, and information on devices accessible from the digital media player device When the device description request for requesting is broadcasted in the second network, the second home gateway transmits the set device description information to the digital media player device as accessible device information. And, when the digital media player device receives the device description information, generating a browsing request for acquiring browsing information stored in the digital media server device, and the second home When the gateway receives the browsing request addressed to the digital media server from the digital media player device, the gateway forwards the browsing request to the first home gateway based on the transfer destination information. When the first home gateway receives the browsing request, the first home gateway acquires the browsing information transmitted to the stored port number and stored in the digital media server device, and is added to the acquired browsing information. The IP address and port number on the first home network side of the digital media server device included in the URL information as the storage area information of each content information are set to the IP address and port number on the IP network side of the first home gateway. The step of rewriting and returning to the second home gateway, and when the second home gateway receives the browsing information from the first home gateway, the storage area information of each content information added to the browsing information is used. The digital media player device rewrites the IP address and port number on the IP network side of the first home gateway included in the URL information of the first home gateway to the IP address and port number on the second home network side of the second home gateway. Transmitting to the digital media player device, the digital media player device displaying the browsing information returned from the home gateway, and the digital media player device acquiring content information selected based on the displayed browsing information. Generating a content acquisition request for the content acquisition request, and when the second home gateway acquires the content acquisition request from the digital media player device, the content acquisition request is added to the content acquisition request. The IP address and port number of the second home gateway side of the second home gateway included in the URL information as the storage area information of the content information is set on the IP network side of the first home gateway based on the transfer destination information. Rewriting to IP address information and port number and transferring to the first home gateway, and when the first home gateway receives a content acquisition request transmitted from the second home gateway to the digital media server device, The IP address and port number on the IP network side of the first home gateway included in the URL information as the storage area information of the content information added to the content acquisition request is used as the first host of the digital media server device. Rewriting the IP address and port number on the network network side and transmitting them to the digital media server device; and when the digital media server device obtains a content acquisition request, the stored content information is stored in the first home Responding by returning to the gateway, the first home gateway returning the content information returned from the digital media server device to the second home gateway, and the second home gateway Returning the content information returned from the first home gateway to the digital media player device; and displaying the content information returned from the second home gateway by the digital media player device; Characterized in that it has.

In this media information sharing method , the setting server device connected to the first home gateway and the second home gateway via the IP network uses the first of the digital media server devices as the access destination identification information. Obtaining and storing an IP address and port number on one home network side, further obtaining an IP address and port number on the second home network side of the second home gateway, and storing the stored identification information of the access destination Is generated by rewriting the acquired IP address and port number of the second home gateway on the second home network side, and access to the digital media server device is requested from a device connected to the second home network. Destination information There may further comprise the step of transmitting as the device description information in order to set the UPnP portion of the second home gateway.

  According to the media information sharing system and the media information sharing method of the present invention, media information can be easily shared between devices in different network segments.

It is a block diagram which shows the structure of the media information sharing system by one Embodiment of this invention. It is a sequence diagram which shows the operation | movement of the proxy communication setting process performed with the media information sharing system by one Embodiment of this invention. It is a sequence diagram which shows the operation | movement of the browsing information acquisition process performed with the media information sharing system by one Embodiment of this invention. It is a display figure which shows an example of the browsing information displayed on the digital media player of the media information sharing system by one Embodiment of this invention. It is a sequence diagram which shows the operation | movement of the content information acquisition process performed with the media information sharing system by one Embodiment of this invention.

  As one embodiment of the present invention, content information recorded as media information in a digital media server (hereinafter referred to as DMS) connected to the first home network 20 constructed in the dwelling unit A is constructed in the dwelling unit B. A case will be described in which a digital media player (hereinafter referred to as DMP) connected to the second home network 50 is shared and viewed.

<Configuration of Media Information Sharing System According to One Embodiment>
FIG. 1 shows the configuration of a media information sharing system according to an embodiment of the present invention.

  The media information sharing system 1 according to the present embodiment includes a DMS 10 installed in a dwelling unit A, a first home gateway (hereinafter referred to as HGW) 30 connected to the DMS 10 via a first home network 20, and a dwelling unit B. An installed digital media player (hereinafter referred to as “DMP”) 40, a second HGW 60 connected to the DMP 40 via the second home network 50, and connected to the first HGW 30 via the IP network 70; The setting server device 80 is connected to the second HGW 60 via the IP network 70, and the operation terminal 90 is connected to the setting server device 80.

  The DMS 10 is a personal media server used in the dwelling unit A, and stores content information such as photographs, music, and video, and a storage unit 11 that stores browsing information that is a list of the stored content information. When a device description information acquisition message is acquired in the proxy communication setting process described later, device description information including identification information about the own device is returned in response to this, and when a browsing request is acquired, it is responded And the response on the first home network 20 side when the browsing information stored in the storage unit 11 is returned and the content information stored in the storage unit 11 is returned in response to the content request. And a port 13 used in the above.

  The first home network 20 is a home network constructed in the dwelling unit A.

  The first HGW 30 is used for communication on the IP network 70 side, the first UPnP unit 31 that performs proxy communication setting for enabling communication with the second HGW 60, the first proxy response unit 32 that performs communication between the second HGW 60 and the DMS 10, and the like. Port 33.

  The DMP 40 is a personal digital media player used in the dwelling unit B. The DMP 40 receives a browsing request for requesting the DMS 10 of the dwelling unit A to acquire browsing information and a content request for requesting acquisition of content information to be viewed by the user. And a display unit 42 for displaying browsing information or content information acquired by transmitting a browsing request or content request from the operation unit 41.

  The second home network 50 is a network constructed in the dwelling unit B and having a different segment from the first home network 20.

  The second HGW 60 is used for communication on the second home network side, the second UPnP unit 61 that performs proxy communication setting for enabling communication with the first HGW 30, the second proxy response unit 62 that performs communication between the first HGW 30 and the DMP 40, And a port 64 used for communication on the IP network 70 side.

  The IP network 70 is a network using an IP technology such as the Internet or NGN (Next Generation Network).

  The setting server device 80 performs proxy communication setting processing for enabling communication between the first HGW 30 and the second HGW 60 according to an instruction from the operation terminal 90.

  The operation terminal 90 is operated by a user and transmits an instruction for causing the setting server device 80 to execute proxy communication setting processing.

<Operation of Media Information Sharing System According to One Embodiment>
Next, proxy communication setting processing, browsing information acquisition processing, and content information acquisition processing executed in the media information sharing system according to the present embodiment will be described with reference to FIGS.

  In this embodiment, the private IP address on the first home network 20 of the DMS 10 installed in the dwelling unit A is “192.168.2.34”, and the global IP address on the IP network 70 of the first HGW 30 is “200.100.10.1”. The private IP address on the second home network 50 of the second HGW 60 is “192.168.1.1”, and the global IP address on the IP network 70 of the second HGW 60 is “200.100.20.1”.

  In this embodiment, it is assumed that a music folder, a photo folder, and a video folder are generated in advance in the storage unit 11 of the DMS 10, and content information of the videos A to C is recorded in the video folder.

[Proxy communication setting process]
In order to allow the content information recorded in the DMS 10 installed in the dwelling unit A to be shared and viewed in the DMP 40 installed in the dwelling unit B, the DMP 40 and the DMS 10 can communicate with each other with respect to the first HGW 30 and the second HGW 60. To perform proxy communication setting processing. The proxy communication setting process will be described with reference to the sequence diagram of FIG.

  First, when the operation terminal 90 is operated by the user, an instruction to execute a proxy communication setting process for performing communication using the DMP 40 of the dwelling unit B as the access source and the DMS 10 installed in the dwelling unit A as the access destination is input. . The proxy communication setting process execution instruction input from the operation terminal 90 is transmitted to the setting server device 80.

  When the setting server device 80 receives an instruction to execute the proxy communication setting process (S1), it acquires device description information for acquiring device description information including identification information such as the IP address of the DMS 10 to be accessed. A message is generated and transmitted to the first HGW 30 via the IP network 70 (S2).

  The device description information acquisition message transmitted from the setting server device 80 is acquired by the first UPnP unit 31 of the first HGW 30 and further transmitted to the DMS 10 via the first home network 20 (S3).

  When the device description information acquisition message is acquired from the first HGW 30 in the DMS 10, the private IP address “192.168.2.34” on the first home network, which is identification information of the own device, and the first home network 20 side in the response unit 12 Device description information A including the port number of the currently used port 13 is generated and transmitted to the first UPnP unit 31 of the first HGW 30 (S4).

  When the device description information A is acquired from the DMS 10 by the first UPnP unit 31 of the first HGW 30, it is further transmitted to the setting server device 80 as a response to the device description information acquisition message (S5).

  In the setting server device 80, the device description information A acquired as a response to the device description information acquisition message transmitted in step S2 is stored as access destination information (S6). In the setting server device 80, the second HGW 60 on the second home network 50 to which the DMP 40 is connected as information for specifying the access source to the first HGW 30 on the first home network 20 to which the DMS 10 to be accessed is connected. A proxy response setting message for setting the identification information is generated and transmitted to the first HGW 60 (S7). This proxy response setting message includes the global IP address “200.100.20.1” of the second HGW 60.

  Next, the proxy response setting message transmitted from the setting server device 80 is received by the first proxy response unit 32 of the first HGW 30, and the DMS 10 (private IP address) is transmitted from the transmission source indicated by the global IP address “200.100.20.1” of the second HGW 30. The access request to the address “192.168.2.34”) is permitted and the port 13 of the DMS 10 used to access the DMS 10 (private IP address “192.168.2.34”) from the global IP address “200.100.20.1” The proxy response is set by storing the port number (S8).

  When the proxy response is set in step S8, the global IP address “200.100.10.1” on the IP network 70 side of the first HGW 30 and the port number of the port 33 are set from the first proxy response unit 32 of the first HGW 30 to the setting server device 80. (S9).

  In this embodiment, a single IP network 70 is used. However, as another form, another network may be used for proxy response setting and media browsing and viewing. Therefore, in step S9, the first HGW 30 is used. The global IP address “200.100.10.1” on the IP network 70 side and the port number of the port 33 are transmitted to the setting server device 80.

  The global IP address “200.100.10.1” and the port number of the port 33 transmitted from the first HGW 30 to the setting server device 80 are further transmitted to the second HGW 60 by the setting server device 80 (S10).

  The global IP address “200.100.10.1” of the first HGW 60 and the port number of the port 33 transmitted from the setting server device 80 are received by the second proxy response unit 62 of the second HGW 60 and are the access destination from the DMP 40 that is the access source. It is set as transfer destination information when an access request to the DMS 10 (private IP address “192.168.2.34”) is received (S11).

  Next, a private IP address acquisition message is transmitted from the setting server device 80 to the second HGW 60 (S12). This private IP address acquisition message is received by the second UPnP unit 61 of the second HGW 60, and as a response to this message, the private IP address “192.168.1.1” on the second home network 50 of the second HGW 60 and the port number of the port 63 are set. It is transmitted to the server device 80 (S13).

  When the setting server device 80 receives the private IP address “192.168.1.1” of the second HGW 60 and the port number of the port 63, the device description information A stored as access destination information when accessing the DMS 10 in step S6 The private IP address “192.168.2.34” on the first home network and the port number of the port 13 on the first home network 20 side are obtained as the private IP address on the second home network 50 of the second HGW 60. The device description information B rewritten with “192.168.1.1” and the port number of the port 63 is generated (S14).

  Then, the rewritten device description information B is transmitted to the second UPnP unit 61 of the second HGW 60 (S15), and is transmitted as destination information when an access is requested to the DMS 10 from a device connected to the second home network 50. The second UPnP unit 61 is set (S16). Since the destination information when the access is requested to the DMS 10 is set in the second UPnP unit 61, the device connected to the second home network 50 can access the DMS 10 connected to the first home network 20. It becomes possible.

  In the proxy response setting in step S8 described above, the transfer destination information setting in step S11, and the device description information B setting in step S16, the port number is included in addition to the setting destination IP address, which will be described later. The communication path established in the browsing information acquisition process can be continuously used in the content information acquisition process.

  This completes the proxy communication setting process for enabling communication between the DMP 40 and the DMS 10.

[Browsing information acquisition processing]
Next, in the access source DMP 40, the browsing information that is a list of content information stored in the access destination DMS 10 is acquired and provided for the user to select desired content. This will be described with reference to the drawings.

  First, when the user operates the operation unit 41 of the access source DMP 40, a device description request for requesting device description information of an accessible device is broadcasted to the second home network 50 (S21).

  When a device description request is transmitted from the DMP 40 by broadcast, a response is made by transmitting information on an accessible device from the second HGW 60. In the present embodiment, device description information B, which is transmission destination information when accessing the DMS 10 from a device connected to the second home network 50 set in the second UPnP unit 61 of the second HGW 60, is accessible. It is responded by being transmitted to the DMP 40 as device information (S22).

  In the DMP 40, device description information B, which is transmission destination information of the DMS 10, is displayed on the display unit 42 as information on accessible devices. When the device description information B is selected to access the DMS 10 by the operation of the operation unit 41 by the user, the private IP address “192.168.1.1” and the port 63 of the second HGW 60 are selected based on the device description information B. A browsing request for accessing the DMS 10 is transmitted from the DMP 40 to the port number (S23).

  In the second HGW 60, when a browsing request with the DMP 40 as the access source and the DMS 10 as the access destination is received from the port 63, the IP network 70 is set based on the transfer destination information set in the second proxy response unit 62 in step S11. Via the global IP address “200.100.10.1” of the first HGW 30 and the port number of the port 33 (S24).

  The first HGW 30 is permitted to receive a browsing request from the port 33 with the global IP address “200.100.20.1” of the second HGW 30 as the transmission source and the DMS 10 as the access destination because the proxy response is set in step S8. It is transmitted to the port number of the port 13 of the private IP address “192.168.2.34” of the DMS 10 that is the destination (S25).

  In the DMS 10, as a response to the browsing request received from the port 13, the browsing information stored in the storage unit 11 is acquired by the response unit 12 and returned to the first HGW 30 (S26).

  The returned browsing information includes URL information including the private IP address of the DMS 10 and the port number of the port 13 being used as storage area information of each content information, for example, “http: // [private IP address of the DMS 10”. 192.168.2.34 "]: [Port number of port 13 of DMS 10] / ~~" is added.

  When the first proxy response unit 32 of the first HGW 30 receives the browsing information from the DMS 10, the storage area information of each content information added to the browsing information is the global IP of the first HGW 30 that is the identification information of the own device. Information in which the port number of the port 13 of the DMS 10 is inserted with the address and the port number of the port 33 being used, for example, “http: // [global IP address“ 200.100.10.1 ”of the first HGW 30”]: [first 1 HGW 30 and port 33 port number] / [port number of DMS 10 port 13] / ˜˜ ”.

  When the storage area information of each content information is replaced, the browsing information to which the replaced information is added is returned from the first proxy response unit 32 of the first HGW 30 to the second HGW 60 via the port 33 and the IP network 70. (S27).

  The browsing information returned from the first HGW 30 is received by the second proxy response unit 62 from the port 64 of the second HGW 60, and the storage area information of each content information added to the browsing information is the identification information of the own device. Information in which the port number of the port 13 of the DMS 10 is rewritten with the private IP address of the 2HGW 60 and the port 63 being used and the port number of the port 13 of the DMS 10 is inserted, for example, “http: // [private IP address of the second HGW 60“ 192.168.1.1 ” ]: [The second HGW 60 and the port number of the port 63] / [the port number of the port 13 of the DMS 10] / ˜˜ ”. By inserting the port number of the DMS 10 used here, the same communication channel that has already been established can be used when the content information is accessed later.

  When the storage area information of each content information is replaced, browsing information to which the replaced information is added is transmitted from the second proxy response unit 62 of the second HGW 60 to the DMP 40 via the port 63 and the second home network 50. (S28).

  In the DMP 40, the browsing information received from the second HGW 60 is displayed on the display unit 42 and presented to the user (S29).

  An example of browsing information displayed on the display unit 42 of the DMP 40 is shown in FIG.

  In the browsing information displayed as shown in FIG. 4, an area for the music folder 111, an area for the photo folder 112, and an area for the video folder 113 are generated in advance in the storage unit 11 of the DMS 10. It is shown that bibliographic information 1131 of video A, bibliographic information 1132 of video B, and bibliographic information 1133 of video C are stored in the area. Note that the storage area information 1131a, 1132a, and 1133a illustrated in FIG. 4 is information that is replaced by the second proxy response unit 62 of the first HGW 60 in step S28.

  Of the information shown in FIG. 4, the storage area information 1131a, 1132a, and 1133a may or may not be displayed on the display unit 42, but these are the bibliographic information 1131 of video A, the bibliographic information 1132 of video B, And the bibliographic information 1133 of the video C are included in the browsing information. The storage area information 1131a to 1133a includes storage area information of each content information, for example, “http: // [second HGW 60. Private IP address “192.168.1.1”]: URL information in a format of [port number of second HGW 60 and port 63] / [port number of port 13 of DMS 10] / ˜˜ ”is included.

  Through the above processing, the browsing information acquired from the DMS 10 of the dwelling unit A is displayed on the DMP 40 of the dwelling unit B and provided to the user.

[Content information acquisition processing]
Next, processing when content information selected by the user from the browsing information displayed on the DMP 40 is acquired from the DMS 10 and viewed will be described with reference to the sequence diagram of FIG.

  First, when the user operates the operation unit 41 of the access source DMP 40 and the bibliographic information 1131 of the video A is selected from the browsing information displayed on the display unit 42, the content information of the video A is requested. A content acquisition request is generated. The generated content acquisition request for the video A is transmitted to the private IP address “192.168.1.1” of the second HGW 60 and the port number of the port 63 according to the information indicated in the storage area information 1131a of the video A (S31). .

  The content acquisition request transmitted from the DMP 40 is received by the second proxy response unit 62 from the port 63 of the second HGW 60, and the URL information “http: // [private IP address of the second HGW 60 is indicated in the storage area information 1131a”. “192.168.1.1”]: [second HGW 60 and port 63 port number] / [port number of DMS 10 port 13] / ˜˜ ”[second HGW 60 private IP address“ 192.168.1.1 ”] and [second HGW 60 port number] 2HGW 60 and port 63 port numbers] are replaced with [first HGW 30 global IP address “200.100.10.1”]: [first HGW 30 and port 33 port numbers] according to the transfer destination information set in step S11.

  In accordance with the URL information thus replaced, a content acquisition request is transmitted from the second proxy response unit 62 of the second HGW 60 to the first HGW 30 via the port 64 and the IP network 70 (S32).

  The content acquisition request transmitted from the second proxy response unit 62 of the second HGW 60 is received by the first proxy response unit 32 from the port 33 of the first HGW 30, and the URL information “http: // indicated in the storage area information 1131a is received. / [Global IP address of the first HGW 30 “200.100.10.1”]: [Port number of the first HGW 30 and the port 33] / [Port number of the port 13 of the DMS 10] / ˜˜] 200.100.10.1 ”) and [the port number of the first HGW 30 and the port 33] according to the proxy response setting performed in step S8 [the private IP address of the DMS 10“ 192.168.2.34 ”]: [the port number of the port 13 of the DMS 10] And the port number of the inserted port 13 of the DMS 10 is deleted.

  In accordance with the URL information thus replaced, a content acquisition request is transmitted from the first proxy response unit 32 of the first HGW 30 to the DMS 10 via the first home network 20 (S33).

  The content acquisition request transmitted from the first proxy response unit 32 of the first HGW 30 is received by the response unit 12 from the port 13 of the DMS 10, and the content information of the video A stored in the area indicated by the URL information is stored in the storage unit. 11 is obtained.

  The acquired content information of video A is returned from the response unit 12 of the DMS 10 to the first HGW 30 via the port 13 and the first home network 20 as a response to the content acquisition request (S34).

  The content information of the video A returned from the DMS 10 is received by the first proxy response unit 32 of the first HGW 30 and sent to the second HGW 60 via the port 33 and the IP network 70 as a response to the content acquisition request transmitted in step S33. It is returned (S35), and further transmitted from the second HGW 60 to the DMP 40 via the port 63 and the second home network 50 (S36).

  In the DMP 40, the content information of the video A acquired from the second HGW 60 is reproduced by being displayed on the display unit 42 and provided to the user (S37).

  According to the above embodiment, when accessing the DMS 10 connected to the first home network built in the dwelling unit A from the DMP 40 connected to the second home network built in the dwelling unit B, 2. Set information for transfer to the home gateway connected to the first home network in the home gateway connected to the home network, and connect to the second home network to the home gateway connected to the first home network. By setting the information for permitting access from the home gateway, it is possible to access using the private IP address as if it is connected to the same home network. Thereby, it becomes possible to acquire and view the content information stored in the DMS 10 in the DMP 40 with a simple operation.

  In the present embodiment, the case where the first HGW 30 connected to the first home network 20 and the second HGW 60 connected to the second home network 50 can directly communicate with each other has been described. However, according to the network standard, the first HGW 30 and the second HGW 60 If it is impossible to communicate directly, the proxy communication setting process described above is performed by performing a setting process for enabling communication in the relay apparatus connected to the IP network 70, for example, the setting server apparatus 80 or the like. The browsing information acquisition process and the content information acquisition process can be executed.

DESCRIPTION OF SYMBOLS 1 ... Media information sharing system 10 ... Digital media server apparatus 11 ... Memory | storage part 12 ... Response part 13 ... Port 20 ... 1st home network 30 ... 1st home gateway 31 ... 1st UPnP part 32 ... 1st proxy response part 33 ... Port DESCRIPTION OF SYMBOLS 40 ... Digital media player apparatus 41 ... Operation part 42 ... Display part 50 ... 2nd home network 60 ... 2nd home gateway 61 ... 2nd UPnP part 62 ... 2nd proxy response part 63 ... Port 64 ... Port 70 ... IP network 80 ... Setting server device 90 ... operation terminal 111 ... music folder 112 ... photo folder 113 ... video folder 1131 to 1133 ... bibliographic information 1131a to 1133a ... storage area information

Claims (4)

A first home gateway connected to a digital media server device compliant with the DLNA standard via a first home network, and a DLNA standard compliant via a second home network constructed in a different segment from the first home network A medium that is connected to a second home gateway connected to the digital media player device via an IP network and performs content acquisition processing for viewing content information stored in the digital media server device by the digital media player device In the information sharing system,
The digital media server device includes:
A storage unit that stores content information and browsing information that is storage area information of the content information ;
When acquiring a content acquisition request for acquiring the content information from the first home gateway, a response unit that responds by acquiring the content information from the storage unit and returning the content information to the first home gateway;
Have
The first home gateway is
Communication on the IP network side of the second home gateway when an instruction to execute proxy communication setting processing for performing communication with the digital media player device as an access source and the digital media server device as an access destination is input And obtains the IP address to be used in the network and sets it as information on a device that is permitted to receive an access request to the digital media server device, and the port number on the first home network side of the digital media server device used for the access Remember
Upon receiving a browsing request for acquiring the browsing information from the second home gateway, the browsing information transmitted to the stored port number and stored in the digital media server device is acquired, and the acquired browsing information is acquired. The IP address and port number on the first home network side of the digital media server device included in the URL information as storage area information of each content information added to the IP address on the IP network side of the first home gateway Rewrite the address and port number and return the information to the second home gateway,
When the content acquisition request transmitted from the second home gateway to the digital media server device is received, the first home included in the URL information as storage area information of the content information added to the content acquisition request. The IP address and port number on the IP network side of the gateway are rewritten to the IP address and port number on the first home network side of the digital media server device, transmitted to the digital media server device, and the content acquisition request is transmitted A first proxy response unit that returns the content information returned from the digital media server device to the second home gateway ;
The digital media player device comprises:
An operation unit for generating a browsing request for acquiring browsing information stored in the digital media server device and a content acquisition request for acquiring content information;
The browsing information returned from the home gateway based on the browsing request generated by the operation unit is displayed, and the content information returned from the second home gateway based on the generated content acquisition request is displayed. Having a display and
The second home gateway is
Information including an IP address and a port number on the first home network side of the digital media server device as identification information of the access destination is generated, and the IP address and port number in this information are further stored in the second home gateway. Device description information rewritten with the IP address and port number on the second home network side is generated, and transmission destination information when access to the digital media server device is requested from a device connected to the second home network Set as
When a device description request for requesting information on a device accessible from the digital media player device is broadcast in the second network, the set device description information is used as information on a device that can be accessed as the digital information. A UPnP section that transmits to the media player device;
When IP address information used in communication on the IP network side of the first home gateway and a port number used in the content acquisition process are acquired, and access is requested from the digital media player device to the digital media server device When the browsing request addressed to the digital media server is received from the digital media player device by transmitting the device description information, the first home gateway is set based on the transfer destination information. When the browsing information is received from the first home gateway due to the transfer, the first home gateway included in the URL information as the storage area information of each content information added to the browsing information. The IP address and port number on the IP network side of the way are rewritten to the IP address and port number on the second home network side of the second home gateway, transmitted to the digital media player device, and based on the browsing information transmitted When the content acquisition request is acquired from the digital media player device, the second home network side of the second home gateway included in the URL information as the storage area information of the content information added to the content acquisition request. The IP address and port number are rewritten to the IP address information and port number on the IP network side of the first home gateway based on the transfer destination information, transferred to the first home gateway, and the content collection is performed. Media information sharing system characterized by a second proxy response unit for returning the content information returned from the first home gateway to the digital media player device by transferring the request. A setting server device connected to the first home gateway and the second home gateway via the IP network;
The setting server device
As the access destination identification information, an IP address and a port number on the first home network side of the digital media server device are acquired and stored, and further, an IP address on the second home network side of the second home gateway and Obtaining a port number, generating information in which the stored identification information of the access destination is rewritten with the IP address and port number on the second home network side of the obtained second home gateway, and generating the second home The device description information, which is transmission destination information when access is requested from the device connected to the network to the digital media server device, is transmitted to be set in the UPnP unit of the second home gateway. The medium according to claim 1, wherein A information sharing system. Compliant with the DLNA standard via a first home gateway connected to a digital media server device compliant with the DLNA standard via a first home network and a second home network constructed in a segment different from the first home network The second home gateway connected to the digital media player device is connected via an IP network, and the digital media player device performs content acquisition processing for viewing content information stored in the digital media server device. In the media information sharing method,
The digital media server device storing content information and browsing information which is storage area information of the content information;
When the first home gateway receives an instruction to execute a proxy communication setting process for performing communication with the digital media player device as an access source and the digital media server device as an access destination, the second home gateway An IP address used for communication on the IP network side of the network is acquired and set as information of a device that permits reception of an access request to the digital media server device, and the first of the digital media server devices used for the access Storing a port number on one home network side;
The second home gateway generates information including an IP address and a port number on the first home network side of the digital media server device as access destination identification information, and further the IP address and port number in this information Is generated by rewriting the IP address and port number on the second home network side of the second home gateway, and access to the digital media server device is requested from a device connected to the second home network. Setting as destination information when
The second home gateway acquires IP address information used in communication on the IP network side of the first home gateway and a port number used in the content acquisition process, and the digital media server device from the digital media player device Setting as forwarding information when access is requested to,
The second home gateway can access the set device description information when a device description request for requesting information on a device accessible from the digital media player device is broadcast in the second network. Transmitting information to the digital media player device as information about the device,
Generating a browsing request for acquiring browsing information stored in the digital media server device when the digital media player device receives the device description information; and
When the second home gateway receives the browsing request addressed to the digital media server from the digital media player device, the second home gateway transfers the browsing request to the first home gateway based on the transfer destination information;
When the first home gateway receives the browsing request, the first home gateway acquires the browsing information transmitted to the stored port number and stored in the digital media server device, and is added to the acquired browsing information. The IP address and port number on the first home network side of the digital media server device included in the URL information as the storage area information of the content information are rewritten to the IP address and port number on the IP network side of the first home gateway. Replying to the second home gateway;
When the second home gateway receives browsing information from the first home gateway, the IP network side of the first home gateway included in URL information as storage area information of each content information added to the browsing information Rewriting the IP address and port number of the second home gateway to the IP address and port number on the second home network side of the second home gateway, and transmitting to the digital media player device;
The digital media player device displaying browsing information returned from the home gateway;
The digital media player device generating a content acquisition request for acquiring content information selected based on the displayed browsing information;
When the second home gateway acquires a content acquisition request from the digital media player device, the second home gateway includes the URL information as storage area information of the content information added to the content acquisition request. Rewriting the IP address and port number on the second home network side to the IP address information and port number on the IP network side of the first home gateway based on the transfer destination information, and transferring to the first home gateway;
When the first home gateway receives a content acquisition request transmitted from the second home gateway to the digital media server device, URL information as storage area information of the content information added to the content acquisition request The IP address and port number on the IP network side of the first home gateway included in the first home gateway are rewritten to the IP address and port number on the first home network side of the digital media server device, and transmitted to the digital media server device Steps,
When the digital media server device acquires a content acquisition request, responding by returning the stored content information to the first home gateway;
The first home gateway returning the content information returned from the digital media server device to the second home gateway;
The second home gateway returning the content information returned from the first home gateway to the digital media player device;
The digital media player device displaying the content information returned from the second home gateway;
A media information sharing method characterized by comprising: The setting server device connected to the first home gateway and the second home gateway via the IP network has, as the access destination identification information, an IP address on the first home network side of the digital media server device, and The port number is acquired and stored, the IP address and the port number of the second home gateway on the second home network side are acquired, and the stored identification information of the access destination is acquired. Information generated by rewriting the IP address and port number of the gateway on the second home network side, and transmission destination information when access to the digital media server device is requested from a device connected to the second home network A certain device description Further comprising the step of transmitting in order to set the UPnP portion of the second home gateway as information
The media information sharing method according to claim 3 .

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