JP2009010912A - Communication system, server device, and mobile device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To control transfer of a content from a server device 20 to a player device 30 without increasing a processing workload in a mobile device 10. <P>SOLUTION: The server device 20 belonging to a home network 50 of the mobile device 10 is configured to transfer a content to the player device 30 belonging to a move destination network 40 without interposing the mobile device 10 in the case where it is judged that the mobile device 10 is located within the mobile destination network 40, and the server device 20 is configured to stop transferring the content to the player device 30 in the case where it is judged that the mobile device 10 is not located within the move destination network 40 any more. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a communication system, a server device, and a mobile device.

  In recent years, with the advancement of mobile devices such as mobile phone terminals and PDA (Personal Digital Assistants) terminals and the expansion of storage size, they have been stored in personal computers and HDDs (Hard Disk Recorders) HDDs (Hard Disk Drives). Content (for example, video) is transferred to a mobile device via a removable media such as a CF (Compact Flash) card or an SD card, or transferred to a mobile device via a USB cable, It has become possible to play (view) content on mobile devices.

  By adopting the MPEG4 or H.264 format compression method as a compression method for realizing the transfer of content to the mobile device and the reproduction of the content on the mobile device, removable media of several gigabytes (GB). On the other hand, it is possible to store content having a playback time ranging from several hours to several tens of hours.

  However, HDDs installed in personal computers and HDRs have a capacity of several hundred gigabytes (GB) to several terabytes (TB), and can record content with playback times ranging from hundreds of hours to thousands of hours. In comparison, it is hard to say that content with sufficient playback time can be stored.

  Therefore, a technique for playing back content stored in a server device belonging to a home network of a mobile device using a player device belonging to a destination network where the mobile device is located is known.

  Specifically, in such a technique, as shown in FIG. 20, the server device 20 (or the relay server device 500) belonging to the home network 50 of the mobile device 10 exists in the relay server device 500 and the destination network 40. The content is transmitted to the player device 30 belonging to the movement-destination network 40 via a secure tunnel established with the mobile device 10 in the service area.

Alternatively, in such a technique, as shown in FIG. 21, the mobile device 10 transmits a secure tunnel established between the relay server device 500 and the mobile device 10 from the server device 20 (or the relay server device 500). After acquiring the authority to acquire the content and giving the authority to the player device 30, the player device 30 is established between the relay server device 500 and the player device 30 using the authority. The content is acquired from the server device 20 (or the relay server device 500) via the secure tunnel and played back.
JP 2007-74529 A JP 2003-46958 A Japanese Patent Laid-Open No. 2005-31803 JP 2006-53673 A JP 2002-344475 A Patent 3810265

  However, in the configuration shown in FIG. 20, since the content transmitted from the server device 20 (or the relay server device 500) is relayed by the mobile device 10 and reaches the player device 30, the processing load on the mobile device 10 is high. There was a problem of becoming.

  In the configuration shown in FIG. 21, after the mobile device 10 gives the above authority to the player device 30, the content is transferred from the server device 20 (or the relay server device 500) to the player device 30. Therefore, even when the mobile device 10 is no longer in the destination network 40, the content transfer is continued and control from the mobile device 10 cannot be performed sequentially. There was a problem.

  Therefore, the present invention has been made in view of the above-mentioned problems, and only when the mobile device is located in the destination network, the server device (or relay server device) is not transmitted via the mobile device. The communication system, the server device, and the mobile device that can control the transfer of the content without increasing the processing load on the mobile device by transferring the content to the player device 30 The purpose is to provide.

  A first feature of the present invention is a communication system for transferring content from a server device to a player device, wherein the server device belonging to a home network of the mobile device is located in a destination network. The server device is configured to transfer the content to the player device belonging to the destination network without passing through the mobile device when the mobile device is determined to be The gist of the invention is that the transfer of the content to the player device is stopped when it is determined that the mobile network is no longer in the destination network.

  In the first aspect of the present invention, the server device may be configured to determine that the mobile device is no longer in the destination network in response to a movement notification received from the mobile device. .

  In the first aspect of the present invention, the mobile device is configured to transmit a predetermined signal at a predetermined interval to the server device when the mobile device is located in the destination network. The server device may be configured to determine that the mobile device is no longer in the destination network when the server no longer receives the predetermined signal.

  In the first aspect of the present invention, the mobile device receives a predetermined signal transmitted from the server device at a predetermined interval when the mobile device is located in the destination network, and The server device is configured to transmit a response signal to the predetermined signal, and the server device determines that the mobile device is no longer in the destination network when the server device does not receive the response signal. It may be configured.

  In the first aspect of the present invention, when the mobile device leaves the destination network, the mobile device transmits a movement notification and a connection continuation notification to the server device, and the mobile device transmits a predetermined period of time to the player device. Alternatively, it is configured to notify a service providing period indicating a predetermined number of times, and the connection continuation notification accepts the content list and the content transfer request transmitted from the player device for the predetermined period or the predetermined number of times. The server device, after receiving the connection continuation notification, stops the exchange of the predetermined signal performed with the mobile device, and only the predetermined number of times or the predetermined period After transferring the content list or the content, the content list or the content list It may be configured to stop the transfer of content.

  In the first aspect of the present invention, the mobile device transmits a content list including address information of a server device that stores the content to the player device when the mobile device is located in the destination network. The player device is configured to transmit a content transfer request for requesting the server device to transfer the content based on the content list, and The server device may be configured to transfer the content to the player device in response to the content transfer request without going through the mobile device.

  In the first aspect of the present invention, the mobile device is configured to transmit address information of a server device that stores the content to the player device when the mobile device is located in the destination network. The player device is configured to transmit a content list and a content transfer request for requesting transfer of the content to the server device based on the address information. In response to the content transfer request, the device may be configured to transfer the content list and the content to the player device without going through the mobile device.

  In the first aspect of the present invention, the player device is configured to transmit, together with the content transfer request, authentication information transmitted from the mobile device to the server device. When the authentication process using the authentication information is successful, the content may be transferred to the player device without going through the mobile device.

  In the first aspect of the present invention, the mobile device requests the server device to transfer the content to the player device when the mobile device is located in the destination network. The server device may be configured to transfer the content to the player device in response to the content transfer request.

  In the first aspect of the present invention, the mobile device requests the player device to acquire the content from the server device when the mobile device is in the destination network. In response to the content acquisition request, the player device acquires the content from the server device by transmitting the content acquisition request to the server device. It may be configured.

  In the first aspect of the present invention, the mobile device is configured to acquire the content list when the mobile device is in the home network, and the mobile device includes the acquired content list. The address information included is converted into address information that can be accessed from the player device to the server device, and when the mobile device is located in the destination network, the player The content list including the converted address information may be transmitted to the device.

  In the first aspect of the present invention, the mobile device is configured to acquire the content list when the mobile device is located in the home network, and the mobile device is located in the destination network. When the mobile device is in a service area, it is configured to acquire the difference information of the content list from the server device, and the mobile device acquires the content when it is in the service destination network The content list generated based on the list and the difference information may be configured to be transmitted to the player device.

  In the first feature of the present invention, the mobile device is configured to transmit viewing-in-progress information indicating the playback status of the content to the player device, and the player device is configured to transmit the viewing-in-progress information. The content transferred from the server device may be played based on the content.

  In the first aspect of the present invention, the mobile device acquires restrictions on contents that can be transferred to the player device from the server device, and notifies the player devices of the acquired restrictions. The player device may be configured to acquire the content from the server device based on the notified restriction.

  In the first aspect of the present invention, the mobile device may be configured to acquire and display incidental information related to the content transferred from the server device to the player device.

  In the first aspect of the present invention, the mobile device may be configured to notify the player device of identification information of content stored in the mobile device.

  In the first aspect of the present invention, the mobile device acquires a transfer status of content by the server device, acquires content determined to satisfy a predetermined condition based on the transfer status, and acquires the content determined from the server device The content may be configured to be transmitted to the player device.

  A second feature of the present invention is a communication system for transferring content from a server device to a player device, wherein the server device belonging to a destination network of a mobile device has the mobile device in the destination network. The content is transferred to the player device belonging to the home network of the mobile device without passing through the mobile device when the mobile device is determined to be in a service area, The gist of the invention is that the transfer of the content to the player device is stopped when it is determined that the mobile device is no longer in the destination network.

  A third feature of the present invention is a server device that transfers content to a player device, belongs to a home network of the mobile device, and determines that the mobile device is located in a destination network The content is transferred to the player device belonging to the destination network without going through the mobile device, and the mobile device is no longer in the destination network. The gist of the invention is that the transfer of the content to the player device is stopped when it is determined.

  According to a fourth aspect of the present invention, there is provided a mobile device used in a communication system for transferring content from a server device to a player device. The mobile device is configured to transmit a content list including address information of a server device storing the content, and by transmitting a movement notification for notifying that the mobile network is no longer in the destination network, The gist is to instruct the server device to stop transmitting the content from the server device without going through the device.

  As described above, according to the present invention, only when the mobile device is located in the destination network, the player device 30 can be connected from the server device (or relay server device) without going through the mobile device. It is possible to provide a communication system, a server device, and a mobile device that can control the transfer of the content without increasing the processing load on the mobile device by configuring to transfer the content to the mobile device. .

(Configuration of communication system according to first embodiment of the present invention)
The configuration of the communication system according to the first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the communication system according to the present embodiment includes a mobile device 10, a server device 20, a player device 30, and a relay server device 500.

  In the example of FIG. 1, the server device 20 and the relay server device 500 belong to the home network 50 of the mobile device 10. In the example of FIG. 1, the mobile device 10 is located in the movement destination network 40, and the player device 30 belongs to the movement destination network 40.

  Here, the relay server device 500 establishes connection # 1 with the mobile device 10 via a BBR (Broad Band Router) 510 belonging to the home network 50, the Internet 60, and a BBR 410 belonging to the destination network 40. It is configured as follows.

  The relay server device 500 is configured to establish connection # 3 with the player device 30 via a BBR (Broad Band Router) 510, the Internet 60, and the BBR 410.

  In addition, when there are a plurality of server devices 20 in the home network 50, the relay server device 500 manages content and a content list (described later) stored in the plurality of server devices 20, and the plurality of servers Instead of the device 20, communication is performed between the mobile device 10 and the player device 30.

  Hereinafter, in the present embodiment, an example in which the relay server device 500 acts as a proxy for a plurality of server devices 20 belonging to the home network 50 will be described. However, in the present invention, the relay server device 500 includes a plurality of server devices 20. It can be applied to an example in which no proxy is used.

  Therefore, the term “server device” in this specification includes both the server device 20 and the relay server device 500.

  The mobile device 10 establishes connection # 2 with the player device 30 by wireless LAN, near field wireless communication (such as Bluetooth (registered trademark) or infrared communication), or wired communication (such as USB (Universal Serial Bus) cable connection). Configured to establish.

  A DDNS (Dynamic Domain Name Server) 70 is connected to the Internet 60. The DDNS 70 is configured to manage a host name and a dynamic global IP address in association with each other.

  Hereinafter, in the present embodiment, a case will be described in which communication performed between the mobile device 10, the server device 20, and the player device 30 via the Internet 60 is compliant with IP. However, such communication should be compliant. The communication protocol is not limited to IP.

  In the present embodiment, the mobile device 10, the server device 20, and the player device 30 may be PCs (Personal Computers) that perform communication according to IP, PDA (Personal Digital Assistants) terminals that perform communication according to IP, It may be a mobile phone terminal.

  That is, the mobile device 10, the server device 20, and the player device 30 may be any computer device as long as it has a function of performing communication according to a predetermined communication protocol.

  FIG. 2 shows a hardware configuration of the mobile device 10. Since the hardware configuration of the mobile device 10 is similar to the hardware configuration of a general computer apparatus, only the hardware configuration related to the present invention will be described with reference to FIG.

  The CPU 101 is configured to control each part of the hardware configuration of the mobile device 10 by executing a program stored in the storage unit 105.

  The storage unit 105 includes a RAM (Random Access Memory) 102 and a ROM (Read Only Memory) 103.

  The RAM 102 is configured to temporarily store data used by the CPU 101.

  The ROM 103 is configured to store a program 100A described later with respect to the CPU 101.

  The operation unit 104 includes a keyboard, a mouse, and the like, and is configured to notify the CPU 101 of an operation command corresponding to a user operation.

  The communication module 106 is configured to perform communication between the server device 20 or the relay server device 500 and the player device 30.

  The security module 107 is configured to manage information necessary for authentication processing and encryption processing.

  The removable medium 108 is configured to store content acquired from the server device 20 (or the relay server device 500) and a content list.

  Next, functions of the mobile device 10 according to the present embodiment will be described with reference to FIG. As shown in FIG. 3, the function of the mobile device 10 according to the present embodiment is realized by the CPU 101 executing a program 100A.

  As shown in FIG. 3, the functions of the mobile device 10 according to the present embodiment include a virtual server device activation unit 11, a server device information acquisition unit 11 </ b> A, a content list transfer request transmission unit 12, and a content list transmission unit 13. The movement notification transmission unit 14 is provided.

  The server device information acquisition unit 11A transmits a server device information confirmation request via the communication module 106 in response to a user operation using the operation unit 104, whereby the server device information acquisition unit 11A receives the server device information acquisition request from the server device 20 (or the relay server device 500). The server device information indicating one or a plurality of server devices 20 belonging to the home network 50 is acquired.

  The virtual server device activation unit 11 is configured to provide some functions of the server device 20 to the player device 30.

  For example, the virtual server device activation unit 11 is configured to provide the above-described server device information to the player device 30 in response to a user operation using the operation unit 104.

  The content list transfer request transmission unit 12 transmits the content list transfer request received from the player device 30 via the communication module 106 to the server device 20 (or the relay server device 500) via the communication module 106. It is configured.

  Here, the content list transfer request is a request to transfer a content list related to content that is stored in the server device 20 selected by the player device 30 and can be provided to the player device 30. .

  The content list transmission unit 13 extracts the content list including the address information of the server device that stores the content from the removable medium 108 or the storage unit 105 when the mobile device 10 is located in the destination network 40. The content list is transmitted to the player device 30 via the communication module 106.

  Specifically, the content list associates identification information of each content (for example, the name of the content) with address information (for example, URL, global IP address, etc.) of the server device that stores the content. is there.

  The movement notification transmission unit 14 notifies the server device 20 (or the relay server device 500) via the communication module 106 when the mobile device 10 is no longer in the movement destination network 40. Is configured to transmit a movement notification for

  Here, the movement notification transmission unit 14 transmits the above-described movement notification to the server device 20 (or relay server) without passing through the mobile device 10 to the server device 20 (or relay server device 500). The device 500) can instruct the player device 30 to stop transmitting content.

  FIG. 4 shows the hardware configuration of the server device 20 (or the relay server device 500). Since the hardware configuration of the server device 20 (or the relay server device 500) is the same as the hardware configuration of the mobile device 10, only the difference between them will be described with reference to FIG.

  The HDD 208 is configured to store the above-described content and content list. Note that the HDD 208 provided in the relay server device 500 is configured to store content and a content list stored in each server device 20.

  Next, functions of the server device 20 according to the present embodiment will be described with reference to FIG. As illustrated in FIG. 5, the function of the server device 20 according to the present embodiment is realized by the CPU 201 executing the program 100B.

  As shown in FIG. 5, the function of the server device 20 according to the present embodiment includes a server device information transmission unit 21, a content list transmission unit 22, a content transmission unit 23, and a movement notification reception unit 24. Yes.

  In response to the server device information confirmation request from the mobile device 10, the server device information transmission unit 21 sends the server device 20 (or one belonging to the home network 50) to the mobile device 10 via the communication module 206. Alternatively, server device information indicating a plurality of server devices 20) is transmitted.

  The content list transmission unit 22 is stored in the server device 20 (or the relay server device 500) for the mobile device 10 via the communication module 206 in response to a content list transfer request from the mobile device 10. The content list related to the content that can be provided to the player device 30 is transmitted.

  The movement notification receiving unit 24 is configured to receive the above movement notification from the mobile device 10 via the communication module 206.

  When the content transmission unit 23 receives a content transfer request from the player device 30 and determines that the mobile device 10 is located in the movement-destination network 40, the content transmission unit 23 sends the mobile device 10 a mobile The content is transferred without going through the device 10.

  Further, when the content transmitting unit 23 determines that the mobile device 10 is no longer in the movement destination network 40 while transferring the content to the player device 30, the content transmitting unit 23 stops the transfer of the content to the player device 30. Is configured to do.

  Here, the content transmitting unit 23 is configured to determine that the mobile device 10 is no longer in the destination network 40 when the movement notification is received from the mobile device 10 by the movement notification receiving unit 24. Yes.

(Operation of the communication system according to the first embodiment of the present invention)
The operation of the communication system according to the first embodiment of the present invention will be described with reference to FIG.

  As shown in FIG. 6, in step S1001, the mobile device 10 sends a server device information confirmation request for confirming one or more server devices 20 belonging to the home network 50 of the mobile device 10 to each server device 20. (Or relay server device 500).

  In step S1002, each server device 20 (or relay server device 500) selects the server device 20 (or one or more server devices 20 belonging to the home network 50) in response to the server device information confirmation request. The server device information shown is transmitted to the mobile device 10.

  The mobile device 10 is activated as a virtual server device in step S1003, and transmits the received server device information to the player device 30 in step S1004.

  In step S1005, the player device 30 selects one or a plurality of server devices 20 from the server devices 20 included in the server device information in accordance with a user operation, and stores them in the selected server device 20 in step S1006. A content transfer request for requesting to transfer a content list relating to the content being transmitted is transmitted to the mobile device 10.

  In step S1007, the mobile device 10 transmits the received content transfer request to the selected server device 20 (or relay server device 500).

  In step S <b> 1008, the server device 20 (or the relay server device 500) transmits a content list related to the content stored in the server device 20 to the mobile device 10.

  Here, the content list includes identification information of one or more contents that can be provided to the player device 30, and address information (for example, URL, global IP address, etc.) of the server device 20 in which the contents are stored. ).

  In step S <b> 1009, the mobile device 10 transmits the received content list to the player device 30.

  In step S1010, the player device 30 selects a desired content from the content included in the received content list in response to a user operation, and in step S1011 the address information of the server device associated with the content. Is transmitted to the server device 20 (or the relay server device 500) to request transfer of the content.

  Here, when the address information of the server device is a URL, the player device 30 acquires a global IP address corresponding to the URL by using an address resolution process by the DDNS 70.

  In step S1012, the server device 20 (or the relay server device 500) transmits the content to the player device 30 without passing through the mobile device 10 in response to the received content transfer request.

  Thereafter, when the mobile device 10 no longer exists in the destination network (step S1013), in step S1014, the mobile device 10 transmits a movement notification indicating that to the server device 20 (or the relay server device 500). .

  In step S1015, the server device 20 (or relay server device 500) stops the transfer of content to the player device 30 in response to the received movement notification.

  Here, in step S1004 in FIG. 6, the mobile device 10 notifies only the address information of the server device 20 (or the relay server device 500) that stores the content to the player device 30, and the player device 30 Based on the address information, the server device 20 (or the relay server device 500) transmits a content transfer request for requesting transfer of the content list and content to the server device 20 (or the relay server device 500). ) May be configured to transfer the content list and the content to the player device 30 without passing through the mobile device 10 in response to the received content transfer request.

  In such a case, the player device 30 transmits a content transfer request to the server device 20 in step S1006, and the server device 20 transmits a content list to the player device 30 in step S1009, so that steps S1007 and S1008 are unnecessary. Become.

  Alternatively, in step S1004 in FIG. 6, after the mobile device 10 notifies the address information of the server device 20 (or the relay server device 500) that stores the content, the mobile device 10 activates the server device 20 to the player device 30. Only the event information for notifying the state such as the end is notified, and the player device 30 is configured to directly acquire the content list and content from the server device 20 and acquire only the event information of the server device 20 from the mobile device 10. It may be.

(Operations and effects of the communication system according to the first embodiment of the present invention)
According to the communication system according to the first embodiment of the present invention, only when the mobile device 10 is located in the destination network 40, the server device 20 (or relay) does not pass through the mobile device 10. By configuring the content to be transferred from the server device 500) to the player device 30, it is possible to control the transfer of the content without increasing the processing load on the mobile device 10.

(Communication system according to the second embodiment of the present invention)
Next, a difference between the communication system according to the second embodiment of the present invention and the communication system according to the first embodiment will be mainly described.

  Here, with reference to FIG. 7, the operation of the communication system according to the present embodiment will be described. The operations in steps S2001 to S2006 shown in FIG. 7 are the same as the operations in steps S1001 to S1006 shown in FIG.

  In step S2007, the mobile device 10 sends an authentication information request for requesting transmission of information (authentication information) necessary for the authentication process of the player device 30 together with the received content transfer request to the selected server device 20 (or To the relay server device 500).

  In step S2008, the server device 20 (or the relay server device 500) transmits the content list related to the content stored in the server device 20 and the authentication information described above to the mobile device 10.

  In step S2009, the mobile device 10 transmits the received content list and authentication information to the player device 30.

  In step S2010, the player device 30 selects a desired content from the contents included in the received content list in response to a user operation. In step S2011, the address information of the server device associated with the content is selected. Is transmitted to the server device 20 (or the relay server device 500), the content transfer request for requesting the transfer of the content and the authentication information described above.

  In step S2012, the server device 20 (or relay server device 500) performs authentication processing on the player device 30 using the received authentication information.

  If the authentication process is successful, in step S2013, the server device 20 (or relay server device 500) transfers the content to the player device 30 without going through the mobile device.

  The operations in steps S2014 to S2016 shown in FIG. 7 are the same as the operations in steps S1013 to S1015 shown in FIG.

(Communication system according to the third embodiment of the present invention)
Next, a difference between the communication system according to the third embodiment of the present invention and the communication system according to the first embodiment will be mainly described.

  As shown in FIG. 8, the function of the mobile device 10 according to the present embodiment includes a player device selection unit 15 and a content transfer request transmission unit 16 in addition to the configuration shown in FIG.

  The player device selection unit 15 acquires a plurality of player device information indicating the player devices 30 belonging to the destination network 40, and in response to a user operation command via the operation unit 105, a plurality of players included in the player device information. A desired player device 30 is selected from the devices 30.

  The content transfer request transmitting unit 16 selects the desired content from the server device 20 (or the relay server device 500) when the mobile device 10 is located in the destination network 40. 30 is configured to transmit a content transfer request requesting to be transferred to 30.

  Next, the operation of the communication system according to the present embodiment will be described with reference to FIG.

  As shown in FIG. 9, in step S3001, the mobile device 10 sends a server device information confirmation request for confirming one or more server devices 20 belonging to the home network 50 of the mobile device 10 to each server device 20. (Or relay server device 500).

  In step S3002, each server device 20 (or relay server device 500) selects the server device 20 (or one or more server devices 20 belonging to the home network 50) in response to the server device information confirmation request. The server device information shown is transmitted to the mobile device 10.

  In step S3003, the mobile device 10 transmits a player device information search request for searching for the player device 30 located in the movement destination network 40, and acquires player device information from each player device 30 in step S3004. .

  In step S3005, the mobile device 10 selects a desired player device 30 from the plurality of player devices 30 included in the acquired player device information.

  In step S3006, the mobile device 10 sends a content transfer request to the server device 20 (or the relay server device 500) to request transfer of a content list related to the content stored in the desired server device 20. Send.

  In step S3007, the server device 20 (or the relay server device 500) transmits a content list related to the content stored in the server device 20 to the mobile device 10.

  In step S3008, the mobile device 10 selects a desired content from the contents included in the received content list in response to a user operation. In step S3009, the address information of the server device associated with the content is selected. Is transmitted to the server device 20 (or the relay server device 500) to request that the content be transferred to the player device 30.

  In step S3010, the server device 20 (or relay server device 500) transmits the content to the player device 30 without passing through the mobile device 10 in response to the received content transfer request.

  The operations in steps S3011 to S3013 shown in FIG. 9 are the same as the operations in steps S1013 to S1015 shown in FIG.

  Here, in the content list notified from the server device 20, the server device 20 (or the relay server device 500) does not allow the malicious user to view the address information of the server device that stores the content. Accepts only the content list transfer request from the player device 30 belonging to the destination network 40 in which the mobile device 10 is located.

  Furthermore, the server device 20 may be configured to obfuscate the address information so that it cannot be easily inferred when the address information is disclosed to the player device 30 belonging to the destination network 40. Alternatively, it may be configured to notify the mobile device 10 after updating the address information once viewed or the address information after a predetermined time has elapsed since reception. .

  As shown in FIG. 10, the mobile device 10 searches for the player device 30 located in the destination network 40 in step B008 while playing the content acquired from the server device 20 in step B007. Player device information search request is transmitted, and player device information is acquired from each player device 30 in step B009.

  In step B010, the mobile device 10 selects a desired player device 30 from the plurality of player devices 30 included in the acquired player device information.

  In step B011, the mobile device 10 stops the transfer of the content currently being viewed on the mobile device 10, and simultaneously sends a content transfer request for requesting the selected player device 30 to continue transferring the content. It transmits with respect to the said server device 20 (or relay server device 500).

  In step B012, the server device 20 (or the relay server device 500) transmits the content to the player device 30 without passing through the mobile device 10 in response to the received content transfer request.

(Communication system according to the fourth embodiment of the present invention)
Next, the communication system according to the fourth embodiment of the present invention will be described mainly with respect to differences from the communication system according to the third embodiment described above.

  The operation of the communication system according to this embodiment will be described below with reference to FIG.

  As shown in FIG. 11, in step A008, the mobile device 10 selects a desired content from the contents included in the received content list in response to a user operation, and is associated with the content in step A009a. The server device 30 is notified of the address information of the server device that is currently being used as a content acquisition request.

  In step A009, the player device 30 transmits a content transfer request for requesting transfer of the content to the player device 30 to the server device 20 (or the relay server device 500).

  The operations in other steps shown in FIG. 11 are the same as the operations shown in FIG.

(Communication system according to the fifth embodiment of the present invention)
Next, the communication system according to the fifth embodiment of the present invention will be described mainly with respect to differences from the communication system according to the first embodiment described above.

  Hereinafter, the operation of the communication system according to the present embodiment will be described with reference to FIG.

  As shown in FIG. 12, in step S4001, the mobile device 10 confirms one or more server devices 20 belonging to the home network 50 in a state where the mobile device 10 is in the home network 50 of the mobile device 10. Server device information confirmation request is transmitted to each server device 20 (or relay server device 500).

  In step S4002, each server device 20 (or relay server device 500) selects the server device 20 (or one or more server devices 20 belonging to the home network 50) in response to the server device information confirmation request. The server device information shown is transmitted to the mobile device 10.

  In step S4003, the content transfer requesting the mobile device 10 to transfer the content list related to the content stored in the desired server device 20 while the mobile device 10 is in the home network 50 of the mobile device 10 The request is transmitted to the server device 20 (or the relay server device 500).

  In step S <b> 4004, the server device 20 (or the relay server device 500) transmits a content list related to content stored in the server device 20 to the mobile device 10.

  Here, the content list includes identification information of one or more contents that can be provided to the player device 30 and address information (for example, URL, private IP address, etc.) of the server device 20 in which the contents are stored. ).

  Thereafter, after moving from the home network 50 to the destination network 40, the mobile device 10 is activated as a virtual server device in step S4005, and transmits the received server device information to the player device 30 in step S4006.

  In step S4007, the player device 30 selects one or a plurality of server devices 20 from the server devices 20 included in the server device information in accordance with a user operation, and stores them in the selected server device 20 in step S4008. A content transfer request is transmitted to the mobile device 10 for requesting transfer of a content list related to the content that is being processed.

  In step S4009, the mobile device 10 transfers difference information with the content list acquired in step S4004 to the selected server device 20 (or relay server device 500) in response to the received content transfer request. A content list difference confirmation request is transmitted.

  In step S4010, the server device 20 (or the relay server device 500) sends the difference information between the content list related to the content stored in the server device 20 and the content list transmitted in step S4004 to the mobile device 10. Send.

  In step S4011, the mobile device 10 generates the latest content list according to the content list acquired in step S4004 and the difference information acquired in step S4010, and transmits it to the player device 30.

  Here, the mobile device 10 converts the address information (private IP address) of the server address 20 included in the acquired content list into address information (global IP address) accessible from the player device 30 to the server device 20.

  The operations in steps S4012 to S4017 shown in FIG. 11 are the same as the operations in steps S1010 to S1015 shown in FIG.

(Communication system according to the sixth embodiment of the present invention)
Next, the communication system according to the fifth embodiment of the present invention will be described mainly with respect to differences from the communication system according to the first embodiment described above.

  As shown in FIG. 13, the function of the mobile device 10 according to this embodiment includes a content transfer status confirmation unit 17, a content acquisition unit 18, and a content transmission unit 19 in addition to the configuration shown in FIG. ing.

  The content transfer status confirmation unit 17 is configured to acquire the content transfer status by the server device 20.

  Specifically, the content transfer status confirmation unit 17 transmits a content transfer status confirmation request (described later) to the server device 20 (or the relay server device 500), thereby the server device 20 (or the relay). The server device 500) may be configured to check the content transfer status.

  Further, the content transfer status confirmation unit 17 may be configured to monitor the content transfer status by the server device 20 (or the relay server device 500).

  Here, as the content transfer status, the number of reproductions indicating the number of times that the content has been transferred from the server device 20 (or the relay server device 500) to one or more player devices 30, or the server device 20 (or The number of transfer failures (transfer failure probability) indicating the number (probability) of transfer of the content from the relay server device 500 to one or more player devices 30 is assumed.

  The content acquisition unit 18 is configured to acquire from the server device 20 (or the relay server device 500) content that is determined to satisfy a predetermined condition based on the transfer status.

  For example, the content acquisition unit 18 may be configured to acquire in advance from the server device 20 (or the relay server device 500) and store the content whose number of reproductions is equal to or greater than a predetermined threshold.

  In addition, the content acquisition unit 18 acquires the content having the transfer failure frequency (transfer failure probability) equal to or greater than a predetermined threshold not via the Internet 6 but via a mobile communication network (for example, FOMA (registered trademark) network). It may be configured as follows.

The content transmission unit 19 is configured to transmit the content acquired by the content acquisition unit 18 to the player device 30. Hereinafter, with reference to FIG. 14, the operation of the communication system according to the present embodiment will be described. explain.

  As shown in FIG. 14, the player device 30 selects a desired content in step S5001, and sends a content transfer request for requesting transfer of the selected content in step S5002 to the server device 20 (or relay server). Device 500).

  In step S5003, the server device 20 (or the relay server device 500) counts the content transfer status, and transmits the content to the player device 30 without passing through the mobile device 10 in step S5004.

  Thereafter, in step S5006, the mobile device 10 transmits a content transfer status confirmation request for confirming the latest content transfer status to the server device 20 (or the relay server device 500).

  In step S5007, the server device 20 (or the relay server device 500) transmits the transfer status of the content stored in the server device 20 to the mobile device 10.

  In response to a user operation, the mobile device 10 designates content determined to satisfy the predetermined condition in step S5008 (for example, content having the above-described number of reproductions or transfer failure count (transfer failure probability) equal to or higher than a predetermined threshold). In step S5009, a content transfer request for requesting transfer of the content is transmitted to the server device 20 (or the relay server device 500).

  In step S5010, the server device 20 (or the relay server device 500) transmits the content to the mobile device 10 in response to the received content transfer request.

  Here, when the mobile device 10 notifies the player device 30 of the content list, the content identification information acquired and stored in advance in step S5010 or the content stored in the mobile device 10 is identified. It may be configured to notify information.

(Communication system according to the seventh embodiment of the present invention)
Next, the communication system according to the seventh embodiment of the present invention will be described mainly with respect to differences from the communication system according to the first embodiment described above.

  In the present embodiment, as shown in FIG. 15, the player device 30 and the relay device 600 belong to the home network 50 of the mobile device 10. In the example of FIG. 15, the mobile device 10 is located in the destination network 40, and the server device 20 belongs to the destination network 40.

  Here, the relay device 600 is configured to establish connection # 1 with the mobile device 10 via the BBR 510 belonging to the home network 50, the Internet 60, and the BBR 410 belonging to the destination network 40.

  The relay device 600 is configured to establish connection # 3 with the server device 20 via the BBR 510, the Internet 60, and the BBR 410.

  Hereinafter, in this embodiment, an example in which the relay device 600 acts as a proxy for a plurality of player devices 30 belonging to the home network 50 will be described. However, in the present invention, the relay device 600 acts as a proxy for a plurality of player devices 30. It is also applicable to examples that are not performed.

  Therefore, the term “player device” in this specification includes both the player device 30 and the relay device 600.

  Hereinafter, the operation of the communication system according to the present embodiment will be described with reference to FIG.

  As shown in FIG. 16, in step S6001, the mobile device 10 confirms the server device information confirmation request for confirming one or more server devices 20 belonging to the destination network 40 in which the mobile device 10 is located. Is transmitted to each server device 20.

  In step S6002, each server device 20 transmits server device information indicating the server device 20 to the mobile device 10 in response to the server device information confirmation request.

  In step S6003, the mobile device 10 is activated as a virtual server device. In step S6004, the mobile device 10 transmits the received server device information to the player device 30 (or the relay device 600) belonging to the home network 50.

  The operations in steps S6005 to S6015 shown in FIG. 16 are the same as the operations in steps S1005 to S1015 shown in FIG.

  Here, as shown in FIG. 17, the mobile device 10 selects the player device 20 in advance in step C005, and notifies the server device 20 of the content to be displayed as a content transfer request in step C009. In step C010, the content may be transferred from the server device 20 to the player device 30 and displayed without passing through the mobile device 10. At this time, the player device 30 or the relay device 600 may receive the content.

  As shown in FIG. 18, the mobile device 10 selects the player device 30 in advance in D005, and notifies the player device 20 of the content to be displayed as a content acquisition request in step D009, and then in step D010. In step D011, the player device 30 transmits a content transfer request to the server device 20, and the content may be transferred from the server device 20 to the player device 30 without the mobile device 10 and displayed. At this time, the player device 30 or the relay device 600 may receive the content.

(Modification 1)
In the communication system according to the first modification, when the movement notification transmission unit 14 of the mobile device 10 is located in the movement destination network 40 instead of transmitting the above-described movement notification, the server device 20 (or the relay server) A predetermined signal is transmitted to the device 500) at predetermined intervals.

  The server device 20 (or the relay server device 500) is configured to determine that the mobile device 10 is no longer in the destination network 40 when the predetermined signal is not received from the mobile device 10. Has been.

  Alternatively, in the communication system according to the first modification, the movement notification transmission unit 14 of the mobile device 10 receives the predetermined signal transmitted from the server device 20 at predetermined intervals when the mobile device 10 is in the movement destination network 40. The server device 20 may be configured to transmit a response signal to the predetermined signal.

  The server device 20 (or the relay server device 500) is configured to determine that the mobile device 10 is no longer in the destination network 40 when the response signal is no longer received from the mobile device 10. May be.

  Further, the communication system according to the first modification may be configured to perform the operation illustrated in FIG.

  As shown in FIG. 19, in step E001, the mobile device 10 sets a service period defined by a predetermined period or a predetermined number of times.

  In step E002, the mobile device 10 notifies the set service period to the player device 30.

  In step E003, the mobile device 10 transmits a movement notification and a connection continuation notification to the server device 20 (or the relay device 500), and leaves the movement destination network 40 in step E004.

  Here, the movement notification notifies that the mobile device 10 leaves the destination network 40, and the connection continuation notification is transmitted from the player device 30 for a predetermined period or a predetermined number of times set in step E001. Request to accept the received content list and content transfer request.

  Then, after receiving the connection continuation notification, the server device 20 (or the relay device 500) stops the exchange of the predetermined signal performed with the mobile device 10 and performs the predetermined number of times or the predetermined period. Only after the content list or content is transferred (steps E005 and E006), the transfer of the content list or content is stopped (step E007).

  In step E008, the player device 30 deletes the stored server information related to the server device 20 (or the relay server 500). As a result, the player device 30 has the content from the server device 20 (or the relay server 500) even after the mobile device 10 has left the destination network 40 for a predetermined period or only a predetermined number of times. Can be obtained and played.

  Then, after acquiring and playing back the content for a predetermined period or a predetermined number of times, the player device 30 deletes the server information related to the server device 20 (or the relay server 500), and the server device 20 (or the relay server 500) Access from the player device 30 (for content lists and content) can be denied.

(Modification 2)
In the communication system according to the second modification, the content list transmission unit 13 of the mobile device 10 transmits to the player device 30 viewing / listening information (bookmark information) indicating the reproduction status of each content together with the above-described content list. It is configured as follows.

  The player device 30 is configured to play back the content transferred from the server device 20 (or the relay server device 500) based on the received viewing-in-progress information.

  Specifically, when “10 minutes have elapsed” or “10 kbytes” has been set in the viewing-in-progress information, the player device 30 determines that “10 minutes have elapsed for the content associated with the viewing-in-progress information” It is configured to play back from “time point” or “10 kbyte time point”.

  Such viewing-in-progress information may be set by the server device 20 (or the relay server device 500) or may be set by the mobile device 10.

  As a result, the player device 30 can take over the playback status of the mobile device 10 and other player devices.

(Modification 3)
In the communication system according to the third modification, the content list transmission unit 13 of the mobile device 10 sends the restrictions on the content that can be transferred to the player device 30 together with the content list described above to the server device 20 (or relay server). The device 500 is configured to notify the player device 30 of the acquired restrictions.

  The player device 30 is configured to acquire content from the server device 20 (or the relay server device 500) based on the notified restriction.

  Here, such a restriction is to allow content that is not normally transferred to the player device 30 outside the home network 50 to be transferred to a specific player device 30 for a predetermined period or a predetermined number of times. Permit information (for example, including authentication information).

  For example, such restrictions are usually given to specific player devices 30 in an environment where only audio content is provided to player devices 30 outside the home network 50 and video content is not provided. This is permission information for permitting transfer of video content for a period or a predetermined number of times.

  In such a case, the specific player device 30 can acquire not only audio content but also video content from the server device 20 (or the relay server device 500) based on the notified restriction.

(Modification 4)
In the communication system according to the modification example 4, the mobile device 10 acquires incidental information (thumbnail, digest image, etc.) regarding the content transferred from the server device 20 (or the relay server device 500) to the player device 30. Configured to display.

(Modification 5)
In the communication system according to the modification example 5, the above-described content list may be different for each mobile device 10.

  That is, each mobile device 10 may be configured to reconfigure the content list acquired from the server device 20 (or the relay server device 500) and provide it to the player device 30.

  Further, the server device 20 (or the relay server device 500) may be configured to provide a different content list for each mobile device 10.

  That is, the server device 20 (or the relay server device 500) may not include all the content stored in the HDD 208 in the content list.

  For example, the server device 20 (or the relay server device 500) takes into consideration the number of times of reproduction and the frequency of reproduction by each player device 30 (or the number of times of reproduction and reproduction frequency mediated by each mobile device 10). It may be configured to preferentially include content with high reproduction frequency in the content list.

(Modification 6)
In the communication system according to the modified example 6, the mobile device 10 is configured to perform predetermined processing on the content received by the player device 30.

  For example, the mobile device 10 performs a copy process, a delete process, an edit process, or the like on the content transferred from the server device 20 (or the relay server device 500) to the player device 30 without going through the mobile device 10. Playback processing (including double-speed playback processing and CM skip processing) can be performed.

  Although the present invention has been described in detail using the above-described embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

1 is an overall configuration diagram of a communication system according to a first embodiment of the present invention. It is a hardware block diagram of the mobile device which concerns on the 1st Embodiment of this invention. It is a software block diagram of the mobile device which concerns on the 1st Embodiment of this invention. It is a hardware block diagram of the server device which concerns on the 1st Embodiment of this invention. It is a software block diagram of the server device which concerns on the 1st Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 1st Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 2nd Embodiment of this invention. It is a software block diagram of the mobile device which concerns on the 3rd Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 3rd Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 3rd Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 4th Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 5th Embodiment of this invention. It is a software block diagram of the mobile device which concerns on the 6th Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 6th Embodiment of this invention. It is a whole communication system lineblock diagram concerning a 7th embodiment of the present invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 7th Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 7th Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the 7th Embodiment of this invention. It is a sequence diagram which shows operation | movement of the communication system which concerns on the example 1 of a change of this invention. It is a figure for demonstrating the problem of the conventional communication system. It is a figure for demonstrating the problem of the conventional communication system.

Explanation of symbols

10 ... Mobile device 101 ... CPU
102 ... RAM
103 ... ROM
DESCRIPTION OF SYMBOLS 104 ... Operation part 105 ... Memory | storage part 106 ... Communication module 107 ... Security module 108 ... Removable media 11 ... Virtual server device starting part 11A ... Server device information acquisition part 12 ... Content list transfer request transmission part 13 ... Content list transmission part 14 ... Movement notification transmission unit 15 ... player device selection unit 16 ... content transfer request transmission unit 17 ... content transfer status confirmation unit 18 ... content acquisition unit 19 ... content transmission unit 20 ... server device 21 ... server device information transmission unit 22 ... content list transmission Unit 23 ... content transmission unit 24 ... movement notification reception unit 30 ... player device 40 ... destination network 410, 510 ... BBR
50 ... Home network 500 ... Relay server device 60 ... Internet 70 ... DDNS

Claims (20)

A communication system for transferring content from a server device to a player device,
When the server device belonging to the home network of the mobile device determines that the mobile device is located in the destination network, the server device passes through the mobile device to the player device belonging to the destination network. And is configured to transfer the content,
The communication system, wherein the server device is configured to stop transfer of the content to the player device when it is determined that the mobile device is no longer in the destination network.   2. The server device according to claim 1, wherein the server device is configured to determine that the mobile device is no longer in the destination network in response to a movement notification received from the mobile device. Communications system. The mobile device is configured to transmit a predetermined signal at predetermined intervals to the server device when the mobile device is located in the destination network.
The communication according to claim 1, wherein the server device is configured to determine that the mobile device is no longer in the destination network when the predetermined signal is not received. system. When the mobile device is located in the destination network, the mobile device receives a predetermined signal transmitted from the server device at a predetermined interval, and transmits a response signal to the predetermined signal to the server device. Is configured as
The communication according to claim 1, wherein the server device is configured to determine that the mobile device is no longer located in the destination network when the server device no longer receives the response signal. system. When the mobile device leaves the destination network, the mobile device transmits a movement notification and a connection continuation notification to the server device, and provides a service providing period indicating a predetermined period or a predetermined number of times to the player device. Configured to notify,
The connection continuation notification is a request to accept the content list and content transfer request transmitted from the player device for the predetermined period or the predetermined number of times.
After receiving the connection continuation notification, the server device stops exchanging the predetermined signal performed with the mobile device, and stores the content list or the content only for the predetermined number of times or the predetermined period. The communication system according to claim 3 or 4 configured to stop the transfer of the content list or the content after the transfer. The mobile device is configured to transmit a content list including address information of a server device that stores the content to the player device when the mobile device is located in the destination network.
The player device is configured to transmit a content transfer request for requesting the server device to transfer the content based on the content list;
6. The server device according to claim 1, wherein the server device is configured to transfer the content to the player device without using the mobile device in response to the content transfer request. The communication system as described in any one. The mobile device is configured to transmit address information of a server device that stores the content to the player device when the mobile device is located in the destination network.
The player device is configured to transmit a content list and a content transfer request for requesting transfer of the content to the server device based on the address information.
The server device is configured to transfer the content list and the content to the player device without passing through the mobile device in response to the content transfer request. The communication system according to any one of 1 to 5. The player device is configured to transmit the authentication information transmitted from the mobile device together with the content transfer request to the server device,
The server device is configured to transfer the content to the player device without passing through the mobile device when the authentication process using the authentication information is successful. The communication system according to claim 6. The mobile device is configured to transmit a content transfer request for requesting the server device to transfer the content to the player device when the mobile device is in the destination network. ,
The communication according to any one of claims 1 to 5, wherein the server device is configured to transfer the content to the player device in response to the content transfer request. system. The mobile device is configured to transmit a content acquisition request for requesting the player device to acquire the content from the server device when the mobile device is located in the destination network. ,
The player device is configured to acquire the content from the server device by transmitting the content acquisition request to the server device in response to the content acquisition request. Item 6. The communication system according to any one of Items 1 to 5. The mobile device is configured to obtain the content list when located in the home network;
The mobile device is configured to convert the address information included in the acquired content list into address information accessible from the player device to the server device;
The mobile device is configured to transmit a content list including the converted address information to the player device when the mobile device is located in the destination network. Item 7. The communication system according to Item 6. The mobile device is configured to obtain the content list when located in the home network;
The mobile device is configured to acquire difference information of the content list from the server device when the mobile device is located in the destination network,
The mobile device is configured to transmit the content list generated based on the acquired content list and the difference information to the player device when the mobile device is located in the destination network. The communication system according to claim 6. The mobile device is configured to transmit viewing information indicating the playback status of the content to the player device,
The communication system according to claim 1, wherein the player device is configured to reproduce the content transferred from the server device based on the viewing-in-progress information. The mobile device is configured to acquire restrictions on content that can be transferred to the player device from the server device, and to notify the player device of the acquired restrictions.
The communication system according to claim 1, wherein the player device is configured to acquire the content from the server device based on the notified restriction.   The communication system according to claim 1, wherein the mobile device is configured to acquire and display incidental information regarding the content transferred from the server device to the player device.   The communication system according to claim 6, wherein the mobile device is configured to notify the player device of identification information of content stored in the mobile device.   The mobile device acquires a transfer status of content by the server device, acquires content determined to satisfy a predetermined condition based on the transfer status, from the server device, and transmits the acquired content to the player device The communication system according to claim 1, wherein the communication system is configured to transmit. A communication system for transferring content from a server device to a player device,
When it is determined that the mobile device is located in the destination network, the server device belonging to the destination network of the mobile device transmits the mobile device to the player device belonging to the home network of the mobile device. Configured to transfer the content without going through the device,
The communication system, wherein the server device is configured to stop transfer of the content to the player device when it is determined that the mobile device is no longer in the destination network. A server device for transferring content to a player device,
Belongs to the mobile device's home network,
When it is determined that the mobile device is located in the destination network, the content is transferred to the player device belonging to the destination network without passing through the mobile device. And
A server device configured to stop transfer of the content to the player device when it is determined that the mobile device is no longer in the destination network. A mobile device used in a communication system for transferring content from a server device to a player device,
A content list including address information of a server device that stores the content is transmitted to the player device when the mobile device is in a destination network;
By transmitting a movement notification for notifying that the mobile terminal is no longer in the destination network, it stops transmitting the content from the server device to the player device without going through the mobile device. A mobile device characterized by directing to.

Images