JP4834794B2 - Content transmission device and content transmission / reception control device - Google Patents

Description

  The present invention relates to a content reception device that receives content transmitted from a content transmission device via a content transmission / reception control device such as a gateway. The present invention also relates to a content transmission device that transmits content to a content reception device via a content transmission / reception control device. The present invention also relates to the content transmission / reception control apparatus described above.

  In recent years, content recording / playback apparatuses connectable to a network have become widespread. Examples of the content recording / playback apparatus include a digital TV (DTV) and a digital video recorder (DVR). For example, two content recording / reproducing apparatuses are connected via a network, and one content recording / reproducing apparatus (hereinafter referred to as a content transmitting apparatus) is connected to the other content recording / reproducing apparatus (hereinafter referred to as a content receiving apparatus). On the other hand, content can be transmitted.

  However, if the content receiving device is not activated, the content transmitting device cannot transmit content to the content receiving device. In such a case, for example, the content transmission device notifies the user of a transmission error, and the user periodically tries to retransmit the content by the content transmission device. If the content receiving device is activated when attempting to retransmit the content, the content transmitting device can transmit the content to the content receiving device.

  For example, an electronic mail delivery device that automatically delivers mail in a delayed manner is disclosed (see Patent Document 1), and such a delayed delivery technique is applied to automatically send (retransmit) content in a delayed manner. If the content receiving device is activated at the timing of delayed transmission, the content transmitting device can transmit content to the content receiving device.

JP-A-7-143163

  However, the content receiving device is not always activated at the timing of delayed transmission. If the content receiving device is not activated at the timing of delayed transmission, the content transmitting device transmits content to the content receiving device. I can't. That is, it is difficult to efficiently improve the transmission error as described above even when the delay distribution technique is applied.

  An object of the present invention is to provide a content receiving apparatus capable of receiving content efficiently with a time difference. Another object of the present invention is to provide a content transmission apparatus capable of efficiently transmitting content with a time difference. Another object of the present invention is to provide a content transmission / reception control device capable of mediating transmission / reception of content efficiently with a time difference.

  A content receiving apparatus according to an embodiment of the present invention includes: a communication unit that communicates with a content transmission / reception control apparatus; and a communication unit that communicates with the content transmission / reception control apparatus using the communication unit and that is managed by the content transmission / reception control apparatus. Communication control means for receiving content transmission time information, requesting content managed by the content transmission device based on the content transmission time information, and receiving the content.

  A content transmission device according to an embodiment of the present invention includes a communication unit that communicates with a content transmission / reception control device, and communicates with the content transmission / reception control device via the communication unit, and content transmission available time information to the content transmission / reception control device. And a communication control means for receiving a content transmission request from the content receiving device from the content transmission / reception control device and transmitting the content in response to the reception of the transmission request.

  A content transmission / reception control device according to an embodiment of the present invention includes: a communication unit that communicates with a content transmission device and a content reception device; and a communication unit that communicates with the content transmission device through the communication unit. The content transmission time information is transmitted to the content reception device, a content transmission request is received from the content reception device based on the content transmission time information, and the content transmission device is received. Communication control means for transmitting the content transmission request.

  ADVANTAGE OF THE INVENTION According to this invention, the content receiver which can receive a content efficiently by a time difference can be provided. Furthermore, according to the present invention, it is possible to provide a content transmission device that can efficiently transmit content with a time difference. Further, according to the present invention, it is possible to provide a content transmission / reception control device capable of mediating transmission / reception of content efficiently with a time difference.

It is a figure for demonstrating an example of a content transmission / reception process when a content transmission request generate | occur | produces in the state which the content receiver has not started. It is a figure for demonstrating an example of a content transmission / reception process when a content reception apparatus starts after content transmission request generation. It is a figure for demonstrating an example of a content transmission / reception process when a content is actually transmitted / received. It is a figure which shows an example of registration processes, such as content transmission possible time information (activation time information) of a content transmission apparatus. It is a figure which shows an example of the transmission / reception process of the content based on content transmission possible time information (starting time information). It is a block diagram which shows an example of a content transmitter or a content receiver. It is a block diagram which shows an example of a content transmission / reception control apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, although the content demonstrated by this embodiment is demonstrated by the meaning of a single (a content), multiple (contents) may be sufficient. The content is assumed to be, for example, moving image data such as a home video or still image data such as a photo, but the content is not limited to these data.

  1 to 3 are diagrams illustrating an example of the overall configuration of a content transmission / reception system. More specifically, FIG. 1 is a diagram for explaining an example of content transmission / reception processing when a content transmission request is generated in a state where the content receiving device is not activated. FIG. 2 is a diagram for explaining an example of content transmission / reception processing when the content receiving apparatus is activated after the content transmission request is generated. FIG. 3 is a diagram for explaining an example of content transmission / reception processing when content is actually transmitted / received.

  FIG. 6 is a block diagram illustrating an example of a content receiving device or a content transmitting device that constitutes a content transmitting / receiving system. In the present embodiment, a common configuration of the content reception device and the content transmission device will be described, but the configuration of the content reception device and the content transmission device may not be completely the same.

  The content transmission device 1 and the content reception device 5 are, for example, a digital TV (DTV) or a digital video recorder (DVR) that can be connected to a network.

  The content transmitting apparatus 1 includes a main control module 11, a user interface module (UI) 12, a scheduling module 13, a content management / input / output module 14, a connection management module 15, a communication module 16, a content storage module 17, and an address storage module 18. I have.

  The main control module 11 functions as a communication control unit that controls content transmission / reception processing. The user interface module 12 receives an instruction from the user. The scheduling module 13 manages a content transmission / reception schedule and controls activation of the main control module 11 and the like. The content management / input / output module 14 manages the content stored in the content storage module 17, outputs the content stored in the content storage module 17, and inputs the content to the content storage module 17. The connection management module 15 manages the address stored in the address storage module 18 and connects to the connection partner device based on the address. The communication module 16 communicates with the content transmission / reception control device 2.

  The content receiver 5 includes a main control module 51, a user interface module (UI) 52, a scheduling module 53, a content management / input / output module 54, a connection management module 55, a communication module 56, a content storage module 57, and an address storage module 58. I have.

  The main control module 51 functions as communication control means for controlling content transmission / reception processing. The user interface module 52 receives instructions from the user. The scheduling module 53 manages the content transmission / reception schedule and controls the activation of the main control module 51 and the like. The content management / input / output module 54 manages the content stored in the content storage module 57, outputs the content stored in the content storage module 57, and inputs the content to the content storage module 57. The connection management module 55 manages the address stored in the address storage module 58 and connects to the connection partner device based on the address. The communication module 56 communicates with the content transmission / reception control device 4.

  FIG. 7 is a block diagram showing an example of a content transmission / reception control device (gateway) that constitutes the content transmission / reception system.

  As shown in FIGS. 1 to 3, the content transmission / reception control device 2 is configured to be communicable with the content transmission device 1, and is attached to a telephone session via a network via an SIP (Session Initiation Protocol) server (network server). 3 is communicable. Further, the content transmission / reception control device 4 is configured to be communicable with the content receiving device 5, and is configured to be communicable with the SIP server 3 via a network accompanying a telephone session. The SIP server 3 associates a telephone number with an IP address based on SIP, and connects the calling device and the called device.

  As shown in FIG. 7, the content transmission / reception control device 2 includes a main control module 21, a connection control module 22, a registered device management module 23, a connection management module 24, a communication module 25, a communication module 26, and a registered device / registration history storage module. 27. A waiting information storage module 28 is provided.

  The main control module 21 and the connection control module 22 function as communication control means for controlling content transmission / reception processing. The registered device management module 23 registers the content transmission device 1 and the like as a registered device in the registered device / registration history storage module 27. The connection management module 24 manages the waiting information stored in the waiting information storage module 28. The communication module 25 communicates with the SIP server 3 via a wide area network (WAN). The communication module 26 communicates with the content transmission device 1 via a local area network (LAN).

  The content transmission / reception control device 4 includes a main control module 41, a connection control module 42, a registered device management module 43, a connection management module 44, a communication module 45, a communication module 46, a registered device / registration history storage module 47, and a waiting information storage. A module 48 is provided.

  The main control module 41 and the connection control module 42 function as communication control means for controlling content transmission / reception processing. The registered device management module 43 registers the content receiving device 5 or the like as a registered device in the registered device / registration history storage module 47. The connection management module 44 manages the waiting information stored in the waiting information storage module 48. The communication module 45 communicates with the SIP server 3 via the WAN. The communication module 26 communicates with the content receiving device 5 via the LAN.

  As shown in FIGS. 1 to 3, when the content transmission device 1 transmits content to the content reception device 5, the content transmitted from the content transmission device 1 is the content transmission / reception control device 2, the SIP server 3. Then, it is transmitted to the content receiving device 5 via the content transmission / reception control device 4.

  When the content transmitting apparatus 1 tries to transmit content to the content receiving apparatus 5 in real time, it is a condition that the content receiving apparatus 5 is in a content receivable state. That is, the condition is that the content receiving device 5 is activated. The content transmission device 1 of the present embodiment can efficiently transmit content with a time difference even when the content reception device 5 is not in a content receivable state. Also, the content receiving device 5 of the present embodiment can efficiently receive content with a time difference when content transmission is requested when the content receiving device 5 is not in a content receivable state.

  An example of content transmission / reception processing will be described with reference to FIGS.

  For example, as shown in FIG. 4, a telephone (or IP telephone) 1a corresponding to the content transmitting apparatus 1 or a telephone (or IP telephone) 1a configured integrally with the content transmitting apparatus 1 The telephone (or IP telephone) 5 a corresponding to the receiving apparatus 5 or the telephone (or IP telephone) 5 a configured integrally with the content receiving apparatus 5 is configured to be communicable.

  A connection request from the telephone 1a to the telephone 5a is notified to the telephone 5a via the content transmission / reception control device 2, the SIP server 3, and the content transmission / reception control device 4, and a connection response (connection OK) from the telephone 5a to the telephone 1a is received. The telephone 1a is notified through the content transmission / reception control device 4, the SIP server 3, and the content transmission / reception control device 2. Through the transmission / reception of the connection request and the transmission / reception of the connection response, the telephone 1a and the telephone 5a are in a connected state, and the address of the content transmission apparatus 1 is notified to the content transmission / reception control apparatus 4 and the content reception apparatus 5, and the content reception apparatus 5 is notified to the content transmission / reception control device 2 and the content transmission device 1.

  The registered device management module 23 of the content transmission / reception control device 2 manages the activation state (power ON state) or the stop state (power OFF state) of the device connected to the content transmission / reception device 2. That is, the registered device management module 23 manages the activation state (power ON state) or the stop state (power OFF state) of the content transmission device 1. Similarly, the registered device management module 43 of the content transmission / reception control device 4 manages the activation state (power ON state) or the stop state (power OFF state) of the device connected to the content transmission / reception control device 4. That is, the registered device management module 43 manages the activated state or the deactivated state of the content receiving device 5. Note that the content transmission / reception control device 2 manages whether the device is in an activated state or a stopped state depending on whether SIP REGISTER / or UPnP Subscribe is output from the device connected to the content transmitting / receiving device 2. Similarly, the content transmission / reception control device 4 also manages whether the device is activated or stopped depending on whether SIP REGISTER / or UPnP Subscribe is output from the device connected to the content transmission / reception control device 4.

  For example, when the user interface module 12 of the content transmission device 1 accepts a content transmission instruction, the communication module 16 of the content transmission device 1 issues a connection request addressed to the content reception device 5. Note that the content transmission instruction described above is an instruction to transmit the content stored in the content storage module 17 to the content receiving device 5 at the address stored in the address storage module 18.

  The connection request addressed to the content reception device 5 is notified to the content transmission / reception control device 4 via the content transmission / reception control device 2 and the SIP server 3. When the registered device management module 43 of the content transmission / reception control device 4 manages the stopped state of the content reception device 5, the connection management module 44 of the content transmission / reception control device 4 registers the connection request in the waiting information storage module 48. .

  The connection request includes content transmission available time information (activation time information) of the content transmission device 1 and content storage location information (URI of the content transmission device 1). For example, the activation time information is information indicating an activation time schedule of the content transmission device 1, and the activation time information includes activation time zone information determined by an activation start time (for example, the next activation start time) and an activation end time. . The activation time information is generated from program recording reservation information, program viewing reservation information, and download processing information. For example, program recording reservation information A (19: 00-20: 00), program recording reservation information B (20: 00-21: 0), program viewing reservation information C (21: 00-21: 30), download processing information Starting time information E (18: 00-18: 10, 18: 58-21: 30) is generated from D (18: 00-18: 10). The download process information is information indicating a process of periodically connecting to a network and downloading various information (program information and the like).

  The connection management module 44 sets a predetermined time included in the content transmission available time zone determined from the content transmission available time information as a waiting time, and the communication module 45 passes through the SIP server 3 and the content transmission / reception control device 2. The content transmission device 1 is notified of the meeting time.

  Note that the connection management module 44 not only sets a predetermined time included in the content transmission available time zone as the waiting time, but also waits for the entire content transmission available time zone (including the start time and end time), for example. Can also be set. The communication module 45 may notify the content transmitting apparatus 1 not of the waiting time but a response that “the waiting time has been set”.

  The communication module 16 of the content transmitting apparatus 1 receives the waiting time information, and the scheduling module 13 manages the received waiting time information. The scheduling module 13 also manages content transmission available time information (activation time information), and the scheduling module 13 activates the main control module 11 and the like based on the content transmission available time information, Control to send ready state.

  Further, as shown in FIG. 5, when the user interface module 52 of the content receiving device 5 receives the activation instruction, the main control module 51 and the like are activated, and the content receiving device 5 enters a content receivable state (activated state). Alternatively, when the scheduling module 53 of the content receiving device 5 activates the main control module 51 or the like based on the recording reservation information or the like, the content receiving device 5 enters a content receivable state (activated state).

  The communication module 56 of the content receiving device 5 in the content receivable state notifies the content transmission / reception control device 4 of activation and requests device registration. The communication module 46 of the content transmission / reception control device 4 receives a device registration request from the content receiving device 5, and the registered device management module 43 registers the content receiving device 5 (being activated). In response to this, the communication module 46 transmits the content transmission available time information (startup time information) of the content transmission device 1 included in the connection request from the content transmission device 1 stored in the waiting information storage module 48, and Content storage location information (URI) is transmitted to the content receiving device 5. Alternatively, the communication module 46 transmits the waiting time and content storage location information (URI) included in the content transmission available time zone to the content receiving device 5.

  The communication module 56 of the content receiving device 5 receives the content transmission available time information of the content transmitting device 1 and the content storage location information. Alternatively, the communication module 56 of the content receiving device 5 receives the waiting time and the content storage location information. The scheduling module 53 manages the content transmission possible time information or the waiting time of the content transmission device 1, starts the main control module 51 based on the content transmission available time information or the waiting time of the content transmission device 1, and sets the content reception device 5. Control to receive content.

  As described above, since the waiting time is a predetermined time included in the content transmission available time information (starting time information) of the content transmitting device 1, the content transmitting device 1 is in an active state at the waiting time. As described above, one content receiving device 5 receives content transmission available time information (startup time information) or waiting time of the content transmitting device 1 from the content transmission / reception control device, and the scheduling module 53 of the content receiving device 5. Controls the activation of the main control module 51 and the like based on the content transmission available time information or the waiting time. For this reason, at the content transmission possible time or the waiting time, the content transmission device 1 is in a content transmission enabled state (starting state), and the content receiving device 5 is in a content receiving ready state (starting state).

  The communication module 56 of the content receiving device 5 in a content receivable state issues a connection request addressed to the content transmitting device 1. The connection request addressed to the content transmission device 1 is notified to the content transmission device 1 via the content transmission / reception control device 4, the SIP server 3, and the content transmission / reception control device 2.

  The content transmission device 1 transmits a connection response (connection OK) in response to the connection request from the content reception device 5. That is, the content transmission device 1 transmits a connection response to the content reception device 5 via the content transmission / reception device 2, the SIP server 3, and the content transmission / reception device 4. Through the transmission / reception of the connection request and the transmission / reception of the connection response, the content transmission device 1 and the content reception device 5 are connected.

  Subsequently, the communication control module 56 of the content receiving apparatus 5 issues a content acquisition request based on the content storage location information. A content acquisition request including content storage location information is notified to the content transmission device 1 via the content transmission / reception control device 4, the SIP server 3, and the content transmission / reception device 3.

  In the case of a connection system (call control system) in which the address of the content transmission apparatus 1 that is the transmission partner is known in advance, the SIP server 3 is not interposed.

  The communication module 16 of the content transmission device 1 receives the content acquisition request, the content management / input / output module 14 reads the content based on the content acquisition request, and the communication module 16 reads the content reception device 5. Sent content. The read content is transmitted to the content reception device 5 via the content transmission / reception control device 2, the SIP server 3, and the content transmission / reception control device 4.

  The communication module 56 of the content receiving device 5 receives the content transmitted from the content transmitting device 1, and the content management / input / output module 54 stores the received content in the content storage module 57.

  Note that the content transmission / reception processing of the present embodiment is not limited to the above description.

  For example, the content transmission device 1 periodically transmits content transmission available time information (start-up time information) to the content reception device 5, or the content reception device 5 periodically transmits the content transmission device. 1 may transmit content receivable time information (activation time information). Thereby, for example, the content transmission apparatus 1 can detect the actual content transmission timing when a content transmission request is generated, and can transmit the content more efficiently.

  Alternatively, the content transmission device 1 may schedule content transmission in a time zone such as a dawn when traffic is low and the content reception device 5 is activated after a content transmission request is generated. it can. This is useful for sending content that does not need to be sent immediately.

  Alternatively, the content transmitting apparatus 1 may receive and register the event date (year-end / new year, birthday) via the user interface module 12, and transmit the content requested to be transmitted in advance so as to be in time for the event date. it can. For example, if it is found that the content receiving device 5 is not activated at the event date and time, the content transmitting device 1 can transmit the content on the date and time closest to the event date and time before the event date and time.

  Further, when the content transmitting apparatus 1 transmits content to the content receiving apparatus 5 for content backup, the content receiving apparatus 5 may manage the received content so that the received content cannot be easily deleted. it can. In this case, the content transmission device 1 transmits content management information to the content reception device 5 together with the content. The content management information includes information indicating that the content is for backup. The content receiving device 5 receives content management information with the content, and detects that the received content is backup data based on the content management information. When the content receiving device 5 receives an instruction to delete the received content via the user interface module 52, the content management / input / output module 54 outputs a warning or the like. In response to the output of this warning or the like, for example, “If this content is deleted, your backup content stored in the content transmission device 1 is also deleted” is displayed.

  According to the present embodiment described above, the content transmission device 1 can efficiently transmit content to the content reception device 5 with a time difference even when the content reception device 5 is not activated. Further, the content transmission / reception processing of the present embodiment can be realized without changing existing hardware and without increasing the power consumption during standby of each device. Furthermore, since content can be transmitted and received in a time zone with little network traffic, the load on the network can be reduced and distributed. Thereby, a large number of contents or large-capacity contents can be efficiently transmitted and received.

  In the above description, the case where the content transmission device 1 and the content reception device 5 transmit and receive content via the content transmission / reception control device 2, the SIP server 3, and the content transmission / reception control device 4 has been described. 1 recognizes the address of the content receiving device 5, or when the content receiving device 5 recognizes the address of the content transmitting device 1, the content transmitting device 1 and the content receiving device 5 perform content transmission / reception control. Content can be transmitted and received without going through the device 2, the SIP server 3, and the content transmission / reception control device 4.

  The module described above may be realized by hardware, or may be realized by software using a CPU or the like.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the embodiments may be appropriately combined as much as possible, and in that case, the combined effect can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention Can be obtained as an invention.

  The invention described in the claims at the beginning of the filing of the original application is appended below.

[1]
A communication means for communicating with the content transmission / reception control device;
The communication means communicates with the content transmission / reception control device, receives content transmission possible time information of the content transmission device managed by the content transmission / reception control device, and is managed by the content transmission device based on the content transmission possible time information. Communication control means for requesting the received content and receiving the content;
A content receiving apparatus comprising:

[2]
The communication control unit receives the storage location information of the content managed by the content transmission / reception control device, and transmits the content to the content transmission / reception control device based on the content transmission available time information and the storage location information. The content receiving device according to [1], wherein the content is received.

[3]
[1], wherein the communication control unit requests the content transmission / reception control device to transmit the content during the content transmission possible time of the content transmission device indicated by the content transmission available time information. The content receiving device described.

[4]
The communication control unit requests the content from the content transmission device via the content transmission / reception control device and a network server, and receives the content transmitted from the content transmission device. 1].

[5]
[2] The content receiving apparatus according to [1], further comprising an activation control unit that activates the communication control unit based on the content transmission available time information and enables the content request and the content reception.

[6]
A communication means for communicating with the content transmission / reception control device;
The communication means communicates with the content transmission / reception control device, transmits content transmission available time information to the content transmission / reception control device, receives a content transmission request from the content reception device from the content transmission / reception control device, Communication control means for transmitting the content in response to reception of a transmission request;
A content transmission apparatus comprising:

[7]
The communication control means transmits content storage location information to the content transmission / reception control device, receives the transmission request for the content of the storage location information from the content reception device, from the content transmission / reception control device, The content transmission apparatus according to [6], wherein the content is transmitted in response to reception of the transmission request.

[8]
The communication control means transmits the content transmission available time information to the content transmission / reception control device even when the content reception device is in a content unreceivable state, and sends the content transmission request from the content reception device. Waiting, receiving the content transmission request from the content receiving device from the content transmission / reception control device, and transmitting the content in response to the reception of the transmission request, [6] apparatus.

[9]
Communication means for communicating with the content transmitting device and the content receiving device;
The communication means communicates with the content transmission device, receives the content transmission available time information of the content transmission device, transmits the content transmission available time information to the content reception device, and transmits the content transmission available time information to the content transmission available time information. Communication control means for receiving a content transmission request from the content reception device based on the content transmission request and transmitting the content transmission request to the content transmission device;
A content transmission / reception control device comprising:

[10]
The content transmission / reception control device according to [9], wherein the communication control means transmits the content transmission available time information in response to an activation notification from the content reception device.

[11]
The communication control means transmits the content transmission request to the content transmission device, receives the content transmitted from the content transmission device, and transmits the content to the content reception device. [9] The content transmission / reception control device according to [9].

DESCRIPTION OF SYMBOLS 1 ... Content transmission apparatus, 11 ... Main control module, 12 ... User interface module (UI), 13 ... Scheduling module, 14 ... Content management / input / output module, 15 ... Connection management module, 16 ... Communication module, 17 ... Content storage Module, 18 ... Address storage module, 2 ... Content transmission / reception control device, 21 ... Main control module, 22 ... Connection control module, 23 ... Registration device management module, 24 ... Connection management module, 25 ... Communication module, 26 ... Communication module, 27 ... Registered device / registration history storage module, 28 ... Meeting information storage module

Claims (2)

A communication means for communicating with the content transmission / reception control device;
The communication means communicates with the content transmission / reception control device, transmits content transmission available time information to the content transmission / reception control device, receives a content transmission request from the content reception device from the content transmission / reception control device, Communication control means for transmitting the content in response to reception of a transmission request;
Equipped with a,
Further, the communication control means transmits content storage location information to the content transmission / reception control device, and receives the transmission request for the content of the storage location information from the content reception device from the content transmission / reception control device. And transmitting the content of the storage location information in response to receiving the transmission request for the content of the storage location information from the content receiving device,
Further, the communication control means transmits the content transmission available time information to the content transmission / reception control device even when the content reception device is in a content unreceivable state, and transmits the content from the content reception device. Waiting for a request, receiving the content transmission request from the content reception device from the content transmission / reception control device, and storing the content corresponding to the reception of the content transmission request of the storage location information from the content reception device Send the content of the location information,
The content transmission / reception control device stores the content transmission available time information and transmits the content transmission available time information to the content reception device in response to activation of the content reception device.   Communication means for communicating with the content transmitting device and the content receiving device;
  The communication means communicates with the content transmission device, receives content transmission available time information from the content transmission device, transmits the content transmission available time information to the content reception device, and transmits the content transmission available time information. Receiving the content transmission request from the content reception device based on the content transmission device, transmitting the content transmission request to the content transmission device, and transmitting the content in response to the reception of the transmission request in the content transmission device Communication control means for receiving the content transmitted from a device and transmitting the content to the content receiving device;
  Storage means for storing the content transmission available time information;
  With
  Further, the communication control means receives content storage location information from the content transmission device, receives the content transmission request for the storage location information from the content reception device, and sends the content transmission device to the content transmission device. The storage location information transmitted from the content transmission device in response to receiving the transmission request for the content of the storage location information in the content transmission device. Receiving the content of
  Further, the communication control means receives the content transmission available time information from the content transmission device even when the content reception device is in a content unreceivable state, and sends the content transmission request from the content reception device. Waiting, receiving the transmission request for the content from the content receiving device, transmitting the transmission request for the content to the content transmitting device, and transmitting the content of the storage location information in the content transmitting device Receiving the content of the storage location information transmitted from the content transmission device in response to receiving the request;
  Further, the storage unit stores the content transmission available time information, and the communication control unit transmits the content transmission available time information to the content receiving device in response to activation of the content receiving device. Content transmission / reception control device.

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