JP2010268060A - Content acquisition method, content acquisition device, content acquisition program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To transmit/receive contents by one time communication without switching voice speech to data transceiving. <P>SOLUTION: A communication unit 12 originates a call, establishes both of a voice session and a control session, and can receive contents performing voice speech by receiving the contents using the control session. Moreover, it can receive the contents after the voice session is cut out. Since the voice speech and the data communication are done using different sessions, transceiving of the contents is not necessary to use a corresponding voice, conversion processing to the corresponding voice is not necessary, and the transmitting/receiving of the contents becomes possible without a load to the voice session. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technique for acquiring content via a network.

  2. Description of the Related Art Conventionally, as a system for transmitting and receiving content using a telephone line and the Internet network, after a receiving device transmits to a transmitting device and selects content by voice guidance using IVR (Interactive Voice Response), the transmitting device transmits Connect to the receiving device and send the content, or the receiving device sends and connects to the transmitting device, and after the user selects the content according to the voice guidance flowing from the transmitting device, the content is received by the deemed audio signal How to do is known.

  Patent Document 1 discloses a technique in which a fax communication terminal transmits image data via the Internet.

JP 2006-352552 A

  In the prior art, since an audio signal is used for content selection and communication other than the audio signal is used for transmission / reception of content, content selection cannot be performed continuously in one communication from acquisition to content acquisition. There is a problem that it is necessary to perform communication twice for selection and transmission / reception of content.

  Also, in the method of transmitting / receiving content following a voice call, content transmission / reception is performed with deemed audio that converts data into audio signals and transmitted / received, and the lack of audio signals in the communication path causes the loss of content data. There is a problem of affecting.

  The present invention has been made in view of the above, and an object of the present invention is to transmit / receive content in one communication without switching a voice call to data transmission / reception.

  A content acquisition method according to a first aspect of the present invention is a content acquisition method in which a content acquisition device acquires content from a content distribution device via a network, and the content acquisition device calls the content distribution device for voice communication. The content acquisition device includes a step of establishing two sessions, a voice session used for the communication and a control session used for data communication, and a step of receiving content from the content distribution device using the control session. The content is received while the control session is established even after disconnection.

  In the content acquisition method, capability information indicating capability that can be used to accept a selection of content to be acquired by presenting a list of content provided by the content distribution device to the user by the content acquisition device is generated. A step of transmitting capability information to the content distribution device using a control session; and a step of receiving capability information by the content distribution device and providing a list of content to the content acquisition device by a method according to the capability information. And a step of presenting a list of contents provided by the content acquisition device to the user and receiving selection of the content by the content acquisition device.

  In the content acquisition method, the content distribution device provides a list of content by voice communication.

  In the content acquisition method, the content distribution device provides a list of content through data communication.

  A content acquisition method according to a second aspect of the present invention is a content acquisition method in which a content acquisition device acquires content from a content distribution device via a network, and is issued to the content distribution device using SIP by the content acquisition device. A step for establishing a control session to be called and used for data communication, and a capability that can be used to accept from the user a selection of content to be obtained by presenting a list of content provided by the content distribution device to the user A step of generating capability information, a step of transmitting capability information to a content distribution device using a control session, and receiving a capability information by the content distribution device and acquiring a content list by a method according to the capability information Providing to the device, and by the content acquisition device, And having a step of accepting the selection of content by presenting a list of contents content acquisition device provides to the user, receiving the content using a control session from the content distribution device.

  A content acquisition device according to a third aspect of the present invention is a content acquisition device that acquires content from a content distribution device via a network, and that is used for voice sessions and data communication that are called to the content distribution device and used for voice communication. Content having communication means for establishing two of the control sessions to be used and reception means for receiving content from the content distribution apparatus using the control session, with the control session established even after the audio session is disconnected Is received.

  The content acquisition device includes a selection unit that presents a list of content provided by the content distribution device to the user and accepts selection of the content, and a generation unit that generates capability information indicating the capability of the selection unit. The communication unit transmits the capability information to the content distribution apparatus using the control session.

  A content acquisition program according to a fourth aspect of the present invention causes a computer to function as each means constituting the content acquisition device.

  A recording medium according to a fifth aspect of the present invention records a content acquisition program for causing a computer to function as each means constituting the content acquisition apparatus.

  According to the present invention, it is possible to transmit / receive content in one communication without switching voice communication to data transmission / reception.

It is a block diagram which shows the structure of the content delivery system in 1st Embodiment. It is a figure which shows the example of capability information. It is a figure which shows the example of a content list. In the said content delivery system, it establishes a voice session and a control session, and is a sequence diagram which shows the flow of a process until a content receiving apparatus notifies its capability. It is a sequence diagram showing a flow of processing for prompting selection of content by voice and receiving content. It is a sequence diagram which shows the flow of the process which displays a content list, prompts selection of a content, and receives a content. It is a sequence diagram which shows the flow of a process of the content delivery system in 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a block diagram showing the configuration of the content distribution system in the first embodiment. The content distribution system shown in FIG. 1 includes a content receiving device 10 and a content distribution server 20, and uses SIP (Session Initiation Protocol) for call control, and transmits / receives content via the IP network 100.

  The content receiving apparatus 10 includes a communication I / F (Interface) 11, a communication unit 12, a capability generation unit 13, a content selection unit 14, and a content reception unit 15, and prints the function of the key telephone and the content such as a received document. Has the function of The content receiving device 10 may be configured by a computer including an arithmetic processing device, a storage device, a memory, and the like, and the processing of each unit may be executed by a program. This program is stored in a storage device included in the content receiving apparatus 10, and can be recorded on a recording medium such as a magnetic disk, an optical disk, or a semiconductor memory, or provided through a network. Hereinafter, each part will be described.

  The communication unit 12 performs call control, voice communication, and data communication, and makes a call so that two sessions of a voice session used for voice communication and a control session used for data communication are established with the content distribution server 20. To do. The communication unit 12 is connected to the IP network 100 via the communication I / F 11.

  The capability generation unit 13 generates capability information of the content receiving device 10. The capability information is the presence / absence or performance of means available for accepting selection of content from the user, such as presence / absence of operation buttons, presence / absence of display means, presence / absence of a receiver, and the like. FIG. 2 shows an example of capability information. The capability information generated by the capability generation unit 13 is transmitted to the content distribution server 20 using the control session. The content distribution server 20 provides a content selection method according to the capability information.

  The content selection unit 14 uses various means connected to the content selection unit 14 to prompt the user to select content and accepts content selection. In the embodiment shown in FIG. 1, an input unit 141 and a display unit 142 are connected to the content selection unit 14. The input unit 141 has an operation button, for example, and the display unit 142 has a liquid crystal display, for example.

  The content receiving unit 15 receives content using the control session and stores it in a storage device or the like. It may have a function of printing or displaying a content such as a received document or photo.

  On the other hand, the content distribution server 20 includes a communication I / F 21, a communication unit 22, a capability selection unit 23, a response function unit 231, a content list unit 232, a content transmission unit 24, and a content storage unit 25.

  The communication unit 22 performs call control, voice communication, and data communication. The communication unit 22 is connected to the IP network 100 via the communication I / F 21.

  The capability selecting unit 23 determines a content selection method to be provided to the content receiving device 10 based on the capability information received from the content receiving device 10. The capability selection unit 23 includes a response function unit 231 and a content list unit 232 for providing a content selection method. The response function unit 231 provides a list of contents by voice guidance using a voice session and prompts selection of the contents. The content list unit 232 transmits and displays a content list, which is a list of content, and prompts selection of the content. FIG. 3 shows an example of the content list. In the figure, examples of contents such as documents and photographs are shown, but the present invention is of course not limited thereto, and other data such as music and moving images may be used as contents.

  The content transmission unit 24 reads content to be transmitted from the content storage unit 25 and transmits the content to the content reception device 10.

  Next, the flow of processing for transmitting and receiving content will be described.

  FIG. 4 is a sequence diagram showing a flow of processing until communication is established between the content receiving device 10 and the content distribution server 20 until the content receiving device 10 notifies its own capability.

  First, the communication unit 12 of the content receiving apparatus 10 specifies to establish both a voice session and a control session, and makes a call to the content distribution server 20 (step S11). Specifically, two description formats conforming to RFC starting with "m = audio" and "m = application" are described in the SDP (Session Description Protocol) media name (parameter specified by m). Call.

  Subsequently, the content receiving server 10 is notified that the content distribution server 20 is calling (step S12), and the call is received (S13). When the content distribution server 20 receives the call, the content distribution server 20 responds that it can handle both the voice session and the control session (step S14).

  The content receiving apparatus 10 that has received the response confirms that the content distribution server 20 can handle both the audio session and the control session (step S15). Then, two sessions are established between the content receiving device 10 and the content distribution server 20, an audio session using RTP (Real-time Transport Protocol) and a control session using TCP (Transmission Control Protocol) (steps). S16, step S17).

  Moreover, the communication part 12 requests | requires the capability information used for content selection from the capability generation part 13 (step S18). The capability generation unit 13 inquires the content selection unit 14 (step S19), and notifies the communication unit 12 of capability information corresponding to the response from the content selection unit 14 (step S20, step S21). And the communication part 12 transmits the capability information to the content delivery server 20 (step S22).

  Upon receiving the capability information, the content distribution server 20 returns a capability notification reception confirmation (step S23) and notifies the capability selection unit 23 of the received capability information (step S24).

  The voice session and the control session are established between the content receiving device 10 and the content distribution server 20 through the processing so far, and the content distribution server 20 is notified of the content selection capability of the content receiving device 10. Hereinafter, two types of processing until the content receiving apparatus 10 selects content and receives the content will be described. The first is for prompting selection of content by voice, and the second is for prompting selection of content by displaying a content list.

  FIG. 5 is a sequence diagram showing a flow of processing for prompting selection of content by voice and receiving content, and is processing subsequent to FIG. This is used when the content receiving device 10 does not have the ability to display a list of content.

  In FIG. 4, the capability selection unit 23 that has received the capability information selects a content selection method based on the capability information, and instructs the response function unit 231 that prompts selection of the content by voice to start voice guidance (step S31).

  When the response function unit 24 starts voice guidance, that is, when voice guidance is received using a voice session (step S32), the user listens to the voice guidance from the content receiver 10 (step S33).

  In accordance with the voice guidance, the user inputs the content to be received to the input unit 141 by operating a button (step S34). When the input unit 141 notifies the content selection unit 14 of the button operation (step S35), the content selection unit 14 transmits content selection information corresponding to the button operation to the content distribution server 20 (step S36). The content selection information includes information for identifying the content selected by the user, and is transmitted using the control session.

  When the content is selected, the response function unit 24 transmits confirmation of the content selected using the voice session, operation guidance, and the like (step S37). The user listens to the voice guidance from the content receiving device 10 (step S38). Further, the response function unit 24 notifies the content transmission unit 24 of the selected content (step S39). The content transmission unit 24 reads the content selected from the content storage unit 25 and prepares for content transmission (step S40).

  The user confirms the content transmitted by voice guidance, puts the handset, and ends voice communication (step S41). Here, the user may select the content again by operating the button. If the content is selected again, the process jumps to step S34.

  When the user puts the handset, the communication unit 12 transmits a voice call disconnect request to the content distribution server 20 (step S42), and the content distribution server 20 disconnects the voice call (step S43). This process disconnects the voice session, but the control session remains established.

  When the communication unit 12 transmits a content transmission request to the content distribution server 20 (step S44), the content transmission unit 24 transmits content using the control session (step S45), and the content receiving apparatus 10 receives the content (step S44). S46). When the content reception is completed, the control session is disconnected and the communication is terminated.

  FIG. 6 is a sequence diagram illustrating a flow of processing in which the content receiving apparatus 10 receives a content list, displays the content list on the display unit 142, prompts selection of the content, and receives the content, and is processing subsequent to FIG. This is used when the content receiving apparatus 10 has a capability of displaying a list of contents.

  In FIG. 4, the capability selection unit 23 that has received the capability information selects a content selection method based on the capability information, and instructs the content list unit 232 to transmit the content list (step S51). At this time, voice guidance such as an operation method may be transmitted to the content receiving apparatus 10 using a voice session. In the following, since only the control session is used for transmission / reception of information related to content selection, the audio session may be disconnected here.

  The content list unit 232 instructed to transmit the content list requests the content storage unit 25 for the content list (step S52), acquires the content list (step S53), and transmits the content list to the content receiving apparatus 10. (Step S54).

  The content selection unit 14 that has received the content list displays the content list on the display unit 142 and prompts the user to select content (steps S55 and S56).

  The user confirms the display unit 142 and inputs the content to be received to the input unit 141 by operating a button (step S57). When the input unit 141 notifies the content selection unit 14 of the button operation (step S58), the content selection unit 14 notifies the communication unit 12 of content selection information corresponding to the button operation (step S59), and the communication unit 12 A content transmission request is transmitted to the content distribution server 20 (step S60). The content transmission request includes information for identifying the content selected by the user, and is transmitted using the control session. In addition, before transmitting a content transmission request | requirement, content selection information may be transmitted to the content delivery server 20, and you may make a user confirm the content to transmit.

  When the content distribution server 20 receives the content transmission request, the content transmission unit 24 reads the selected content from the content storage unit 25 (step S61), and transmits the content using the control session (step S62). Then, the content receiving device 10 receives the content (step S63). When the content reception is completed, the control session is disconnected and the communication is terminated.

  Therefore, according to the present embodiment, the communication unit 12 makes a call to establish both a voice session and a control session, and receives the content while performing a voice call by receiving the content using the control session. In addition, the content can be received even if the voice session is disconnected. As a result, content selection and acquisition are completed in one communication, so that only one communication charge is required. In addition, since voice communication and data communication are performed in separate sessions, it is not necessary to use deemed audio for sending and receiving content, and conversion processing to deemed audio is not necessary, and content can be sent and received without burden. Become. Also, by using TCP for content transmission / reception, retransmission control can be performed, and loss of content data can be prevented.

  According to the present embodiment, after the voice session and the control session are established, content information is transmitted by transmitting to the content distribution server 20 capability information indicating capability that can be used to accept selection of content to be acquired from the user. Since the server 20 can provide a selection method suitable for the content receiving apparatus 10, it is possible to improve user convenience.

[Second Embodiment]
FIG. 7 is a sequence diagram showing a flow of processing in which the content distribution system in the second embodiment establishes communication and transmits capability information. The second embodiment differs from the first embodiment in that only a control session is established without establishing a voice session. For example, it is used when voice guidance is unnecessary.

  The content receiving apparatus shown in FIG. 7 also performs call control by SIP as in the first embodiment. Normally, when SIP is used, it is intended for voice communication, but in the second embodiment, voice communication is not performed and only data transmission / reception using a control session is performed. Hereinafter, the flow of processing will be described.

  When the user inputs the telephone number of the content distribution server 20, the content receiving device 10 specifies to establish a control session and makes a call to the content distribution server 20 (step S71). Specifically, the SDP media name is described with a description format compliant with RFC starting with “m = application”.

  Subsequently, the content receiving server 10 is notified that the content distribution server 20 is calling (step S72), and the call is received (S73). When the content delivery server 20 receives the call, the content delivery server 20 responds that it can handle the control session (step S74).

  The content receiving apparatus 10 that has received the response confirms that the content distribution server 20 can handle the control session (step S75), and establishes a control session using TCP (step S76).

  Then, the content receiving apparatus 10 acquires capability information indicating the content selection capability and transmits it to the content distribution server 20 (step S77). When receiving the capability information, the content distribution server 20 returns a capability notification reception confirmation (step S78).

  In the second embodiment, since no audio session is established, content selection by audio is not performed, and content selection is performed by the method of displaying the content list shown in FIG. Since the subsequent content selection and reception processing flow is the same as that shown in FIG. 6, duplicate description will be omitted.

DESCRIPTION OF SYMBOLS 10 ... Content receiver 11 ... Communication I / F part 12 ... Communication part 13 ... Capability production | generation part 14 ... Content selection part 141 ... Input part 142 ... Display part 15 ... Content reception part 20 ... Content delivery server 21 ... Communication I / F Unit 22 ... communication unit 23 ... capability selection unit 231 ... response function unit 232 ... content list unit 24 ... content transmission unit 24 ... response function unit 25 ... content storage unit 100 ... IP network

Claims (9)

A content acquisition method in which a content acquisition device acquires content from a content distribution device via a network,
By the content acquisition device,
Establishing two sessions, a voice session used for voice communication and a control session used for data communication by calling the content distribution device;
Receiving the content from the content distribution device using the control session,
The content acquisition method, wherein the content acquisition apparatus receives the content while the control session is established even after the audio session is disconnected. By the content acquisition device,
Generating capability information indicating capability that can be used to accept from the user a selection of content to be obtained by presenting a list of content provided by the content distribution device to the user;
Transmitting the capability information to the content delivery device using the control session;
According to the content distribution device,
Receiving the capability information and providing a list of content to the content acquisition device in a method according to the capability information;
By the content acquisition device,
Presenting a list of the content provided by the content acquisition device to the user and accepting selection of the content;
The content acquisition method according to claim 1, further comprising:   The content acquisition method according to claim 2, wherein the content distribution device provides a list of the content by voice communication.   The content acquisition method according to claim 2, wherein the content distribution device provides a list of the content through data communication. A content acquisition method in which a content acquisition device acquires content from a content distribution device via a network,
By the content acquisition device,
Establishing a control session to be used for data communication by calling the content distribution device using SIP;
Generating capability information indicating capability that can be used to accept from the user a selection of content to be obtained by presenting a list of content provided by the content distribution device to the user;
Transmitting the capability information to the content delivery device using the control session;
According to the content distribution device,
Receiving the capability information and providing a list of content to the content acquisition device in a method according to the capability information;
By the content acquisition device,
Presenting a list of the content provided by the content acquisition device to the user and accepting selection of the content;
Receiving the content from the content distribution device using the control session;
The content acquisition method characterized by having. A content acquisition device that acquires content from a content distribution device via a network,
A communication unit that establishes two sessions, a voice session used for voice communication by calling the content distribution device and a control session used for data communication;
Receiving means for receiving the content from the content distribution device using the control session,
The content acquisition apparatus, wherein the content is received while the control session is established even after the voice session is disconnected. A selection means for presenting a list of contents provided by the content distribution device to a user and receiving selection of the contents;
Generating means for generating capability information indicating the capability of the selection means,
The content acquisition device according to claim 6, wherein the communication unit transmits the capability information to the content distribution device using the control session.   The content acquisition program for functioning a computer as each means which comprises the content acquisition apparatus of Claim 6 or 7.   A recording medium on which a content acquisition program for causing a computer to function as each means constituting the content acquisition device according to claim 6 or 7 is recorded.

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