JP2010288086A - Information processing device, information processing method, operation terminal and information processing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new and improved technology for reducing development costs for creating equipment corresponding to play list playback and raising convenience when the play list playback is performed. <P>SOLUTION: This information processing device 200 includes a content data transmission control part 224 which makes a communication part 230 execute processing for converting, when it is determined that second play list identification information is included in a transmission request which the communication part 230 receives from a playback device 300, the second play list identification information into first play list identification information, connecting a plurality of pieces of content data according to a playback order described in a play list to be identified by the first play list identification information to be transmitted to the playback device 300 as one piece of content data. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an information processing apparatus, an information processing method, an operation terminal, and an information processing system.

  In recent years, there are various techniques for continuously reproducing a plurality of content data according to a playlist (hereinafter, also simply referred to as “playlist reproduction”). For example, there is a technique corresponding to a dynamic change in a playlist held by a server (see, for example, Patent Document 1).

  In DLNA (Digital Living Network Alliance), a method for realizing playlist reproduction is defined. Each device can realize play list reproduction by following a method defined in DLNA. However, in DLNA, it is not obliged to have a configuration capable of playing a playlist (a configuration corresponding to playlist playback). For this reason, when it is desired to perform playlist playback (for example, continuous playback of music content data), it is necessary to purchase a server, operation terminal, playback device, etc. that support playlist playback. An example of the server is DMS (Digital Media Server). Similarly, DMC (Digital Media Controller) is an example of the operation terminal. An example of a playback apparatus is DMR (Digital Media Renderer).

JP 2006-345306 A

  However, in the situation where there is a device that does not support playlist playback, if a product that supports playlist playback is created and put on the market, DMS, DMC, and DMR that support playlist playback are newly created. Need to do. In such a situation, since the development cost at the time of initial introduction of the product corresponding to the playlist reproduction is high, there is a problem that it is difficult to put a product compatible with the playlist reproduction on the market.

  As another technique, it is also possible for the DMC to realize playlist reproduction by giving a reproduction instruction to the DMR for each piece of content data (one piece of music data in the case of music content data). However, when using such a technique, the DMC is connected to the same network as the network to which the DMR is connected while being activated until the transmission of the last content data to the DMR is completed. It needs to be done. For this reason, there is a problem that it is inconvenient because the power of the DMC cannot be turned off until the transmission of the last content data to the DMR is completed.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to reduce the development cost for creating a device compatible with playlist playback and perform playlist playback. It is an object of the present invention to provide a new and improved technique capable of improving convenience at the time.

  In order to solve the above problems, according to an aspect of the present invention, a plurality of content data and each piece of content identification information for identifying each of the plurality of content data are described in the order of reproduction of the plurality of content data. A storage unit that stores the first playlist identification information for identifying the playlist and the playlist and the second playlist identification information obtained by converting the first playlist identification information, and between the operation terminal The operation is performed when the first play list identification information is received from the operation terminal and continuous reproduction is impossible when continuous reproduction in which a plurality of content data is received and reproduced sequentially as a response to one transmission request is possible. It is possible to execute processing for transmitting / receiving information to / from a playback device that receives the second playlist identification information from the terminal A communication unit; a request reception control unit that causes the communication unit to execute a process of receiving a transmission request including the first playlist identification information or the second playlist identification information from the playback device; and a transmission request received by the communication unit. When it is determined that the request determination unit that determines which of the first playlist identification information and the second playlist identification information is included, and the transmission request includes the second playlist identification information Then, the second playlist identification information is converted into the first playlist identification information, and a plurality of content data are connected in accordance with the reproduction order described in the playlist identified by the first playlist identification information as one content data. There is provided an information processing apparatus including a content data transmission control unit that causes a communication unit to execute processing to be transmitted to a playback device.

  The content data transmission control unit, when the request determination unit determines that the first playlist identification information is included in the transmission request, the reproduction described in the playlist identified by the first playlist identification information The communication unit may be caused to execute a process of sequentially transmitting each of the plurality of content data to the playback device according to the order.

  The content data transmission control unit converts a piece of content data into a format that can be played back by the playback device when the communication unit executes a process of connecting a plurality of content data and transmitting the content data to the playback device as one content data. The content data obtained by the conversion may be used as data to be transmitted to the playback device.

  The content data transmission control unit may execute a cross-fade process on a joint portion of the plurality of content data when connecting the plurality of content data.

  In order to solve the above problem, according to another aspect of the present invention, a communication unit capable of executing a process of transmitting and receiving information between the information processing apparatus and the reproduction apparatus; A device that causes the communication unit to execute processing for acquiring device information indicating whether or not continuous playback is possible in which the playback device sequentially receives and plays back a plurality of content data as a response to one transmission request. An information acquisition unit; first playlist identification information for identifying a playlist in which each piece of content identification information for identifying each of a plurality of pieces of content data is described in order of reproduction of the plurality of pieces of content data; The playlist identification information is acquired by causing the communication unit to execute processing for acquiring the second playlist identification information obtained by converting the playlist identification information from the information processing apparatus. And the device information determination unit that determines the device information acquired by the communication unit, and the device information determination unit selects the first playlist identification information when it is determined that continuous playback by the playback device is possible When the device information determination unit determines that continuous playback by the playback device is impossible, the playlist identification information selection unit that selects the second playlist identification information and the playlist identification information selection unit select An operation terminal is provided that includes a playlist identification information transmission control unit that causes a communication unit to execute a process of transmitting the first playlist identification information or the second playlist identification information to the playback device.

  As described above, according to the present invention, it is possible to reduce the development cost for creating a device that is compatible with playlist reproduction, and to improve the convenience when performing playlist reproduction.

It is a figure which shows the structure of the information processing system which concerns on this embodiment. It is a figure which shows the function structure of the operating terminal which concerns on this embodiment. It is a figure which shows the function structure of the information processing apparatus which concerns on this embodiment. It is a figure which shows the function structure of the reproducing | regenerating apparatus which concerns on this embodiment. It is a figure which shows an example of a play list selection screen. It is a flowchart which shows the flow of the process which an operating terminal performs. It is a flowchart which shows the flow of the process which information processing apparatus performs. It is a flowchart which shows the flow of the process which a reproducing | regenerating apparatus performs. It is explanatory drawing for demonstrating the content data transmitted to an reproducing | regenerating apparatus from information processing apparatus. It is a figure which shows an example of the play list identification information transmitted to an operation terminal from information processing apparatus. It is a figure which shows the structure of the information processing system which concerns on the modification of this embodiment.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol. The description will be given in the following order.

1. 1. First embodiment 1-1. Configuration of information processing system 1-2. Functional configuration of operation terminal 1-3. Functional configuration of information processing apparatus 1-4. Functional configuration of playback apparatus 1-5. Example of playlist selection screen 1-6. Flow of processing executed by operation terminal 1-7. Flow of processing executed by information processing apparatus 1-8. Flow of processing executed by playback device 1-9. Content data transmitted from information processing apparatus to playback apparatus 1-10. 1. playlist identification information transmitted from the information processing apparatus to the operation terminal 2. Modification of first embodiment Summary

<1. First Embodiment>
A first embodiment of the present invention will be described.

[1-1. Configuration of information processing system]
FIG. 1 is a diagram illustrating a configuration of an information processing system according to the present embodiment. As shown in FIG. 1, the information processing system according to this embodiment includes an operation terminal (DMC) 100, an information processing device (DMS) 200, and a playback device (DMR) 300. The operation terminal (DMC) 100, the information processing device (DMS) 200, and the playback device (DMR) 300 are communicable via a network. The playback device (DMR) 300 may be a case where content data cannot be played back according to a playlist defined by DLNA. Here, the playlist is a description in which each piece of content identification information for identifying each of a plurality of content data is arranged in the order of reproduction of the plurality of content data. In the following, a URL is used as an example of content identification information. The playback device (DMR) 300 acquires content data for the URL of the content list set by the operation terminal (DMC) 100, and plays back the acquired content data.

  If the content data specified by the playlist is arranged in order in the content data acquired by the playback device (DMR) 300, then the content data for the playback device (DMR) 300 is played back. However, as a result, the playback device (DMR) 300 is performing playlist playback.

  In order to realize this, the operation terminal (DMC) 100 performs browsing on the information processing apparatus (DMS) 200 (step S1) and searches for a playlist to be reproduced by the reproduction apparatus (DMR) 300. The operation terminal (DMC) 100 acquires the URL of the playlist in a format that can be played back by the playback device (DMR) 300 from the information processing device (DMS) 200 (step S2). The operation terminal (DMC) 100 sets the acquired URL of the playlist to the playback device (DMR) 300 (step S3).

  The playback device (DMR) 300 accesses the URL set by the operation terminal (DMC) 100, acquires content data, and performs playback (step S4). The information processing device (DMS) 200 transmits content data in accordance with the content data transmission request from the playback device (DMR) 300 (step S5). At that time, the information processing apparatus (DMS) 200 transmits the content data specified by the playlist in a sequence specified by the playlist.

  FIG. 2 is a diagram illustrating a functional configuration of the operation terminal according to the present embodiment. As illustrated in FIG. 2, the operation terminal (DMC) 100 includes an input unit 110, a processing unit 120, a communication unit 130, and a storage unit 140. The processing unit 120 includes a device information acquisition unit 121, a URL acquisition unit 122 as an example of a playlist identification information acquisition unit, a device information determination unit 123, and a URL selection unit 124 as an example of a playlist identification information selection unit. And a URL transmission control unit 125 as an example of a playlist identification information transmission control unit. The processing unit 120 includes, for example, a CPU (Central Processing Unit) and a RAM (Random Access Memory), and executes the program stored in the storage unit 140.

  The input unit 110 is configured by an input device, for example, and receives input of information from the user. Although the kind of input device is not specifically limited, For example, it is comprised with a keyboard, a button, etc.

  The communication unit 130 is configured by a communication device, for example, and can execute processing for transmitting and receiving information between the information processing device (DMS) 200 and the playback device (DMR) 300. For example, the communication unit 130 can execute a process of transmitting and receiving information between the information processing apparatus (DMS) 200 and the reproduction apparatus (DMR) 300 via a network.

  The storage unit 140 is configured by a storage device, for example, and stores programs, data, and the like for realizing the functions of the operation terminal (DMC) 100. The storage unit 140 is also used to store data used when being calculated by the processing unit 120.

  The device information acquisition unit 121 reproduces device information indicating whether or not continuous playback in which the playback device (DMR) 300 receives and plays back a plurality of content data sequentially as a response to one transmission request is possible. (DMR) 300 causes the communication unit 130 to execute processing.

  The URL acquisition unit 122 acquires, from the information processing apparatus (DMS) 200, first playlist identification information for identifying a playlist and second playlist identification information obtained by converting the first playlist identification information. The communication unit 130 executes the process. The method for obtaining the second playlist identification information by converting the first playlist identification information is not particularly limited. For example, the URL acquisition unit 122 converts the first playlist identification information into the second playlist identification information by adding a predetermined character string to the first playlist identification information. The predetermined character string is not particularly limited, and for example, a character string such as “aaa” is converted to the second playlist identification information by being added to the end of the first playlist identification information.

  The device information determination unit 123 determines the device information acquired by the communication unit 130.

  When the device information determination unit 123 determines that continuous playback by the playback device (DMR) 300 is possible, the URL selection unit 124 selects the first playlist identification information, and the device information determination unit 123 reproduces it. When it is determined that continuous playback by the device (DMR) 300 is impossible, the second playlist identification information is selected.

  The URL transmission control unit 125 causes the communication unit 130 to execute a process of transmitting the first playlist identification information or the second playlist identification information selected by the URL selection unit 124 to the playback device (DMR) 300.

  FIG. 3 is a diagram illustrating a functional configuration of the information processing apparatus according to the present embodiment. As illustrated in FIG. 3, the information processing apparatus (DMS) 200 includes a storage unit 210, a processing unit 220, and a communication unit 230. The processing unit 220 includes a URL provision control unit 221, a request reception control unit 222, a request determination unit 223, and a content data transmission control unit 224. The processing unit 220 is configured by, for example, a CPU and a RAM, and executes a program stored in the storage unit 210.

  The storage unit 210 includes, for example, a storage device, and stores programs, data, and the like for realizing the functions of the information processing device (DMS) 200. The storage unit 210 is also used to store data used when being calculated by the processing unit 220. The storage unit 210 includes a playlist 211 and content data 212. The content data 212 is composed of a plurality of content data, and the playlist 211 is for designating the reproduction order of the plurality of content data. The storage unit 210 further stores first playlist identification information for identifying a playlist and second playlist identification information obtained by converting the first playlist identification information.

  The communication unit 230 is constituted by, for example, a communication device, and can execute processing for transmitting and receiving information between the operation terminal (DMC) 100 and the playback device (DMR) 300.

  The URL provision control unit 221 causes the communication unit 230 to execute a process of transmitting a URL (first playlist identification information and second playlist identification information) to the operation terminal (DMC) 100.

  The request reception control unit 222 causes the communication unit 230 to execute a process of receiving a transmission request including the first playlist identification information or the second playlist identification information from the playback device (DMR) 300.

  The request determination unit 223 determines which of the first playlist identification information and the second playlist identification information is included in the transmission request received by the communication unit 230.

  When it is determined that the transmission request includes the second playlist identification information, the content data transmission control unit 224 converts the second playlist identification information into the first playlist identification information. The content data transmission control unit 224 connects a plurality of content data according to the playback order described in the playlist identified by the first playlist identification information obtained by the conversion, and plays it as one content data as a playback device (DMR). The communication unit 230 executes the process of transmitting to 300. Here, the method of converting the second playlist identification information into the first playlist identification information is not particularly limited. For example, the first playlist is removed by removing a predetermined character string from the second playlist identification information. It can be converted into playlist identification information.

  The content data transmission control unit 224 is described in a playlist identified by the first playlist identification information when the request determination unit 223 determines that the first playlist identification information is included in the transmission request. The communication unit 230 is caused to execute processing for sequentially transmitting each of the plurality of content data to the playback device (DMR) 300 according to the playback order.

  When the content data transmission control unit 224 causes the communication unit 230 to execute a process of connecting a plurality of content data and transmitting the content data as one content data to the playback device (DMR) 300, the playback device (DMR) 300 may play back the content data. The content data may be converted into a possible format, and the content data obtained by the conversion may be used as data to be transmitted to the playback device (DMR) 300.

  When connecting a plurality of content data, the content data transmission control unit 224 may execute a cross-fade process on a joint portion of the plurality of content data. The cross-fade process means that the transition to the next content data is gradually executed with the joint portion of the content data as a boundary.

  FIG. 4 is a diagram illustrating a functional configuration of the playback apparatus according to the present embodiment. As illustrated in FIG. 4, the playback device (DMR) 300 includes a storage unit 310, a processing unit 320, a communication unit 330, and an output unit 340. The processing unit 320 includes a URL reception control unit 321, a content data acquisition unit 322, and a playback unit 323. The processing unit 320 is configured by, for example, a CPU and a RAM, and executes a program stored in the storage unit 310.

  The storage unit 310 is configured by, for example, a storage device, and stores programs, data, and the like for realizing the functions of the playback device (DMR) 300. The storage unit 310 is also used to store data used when being calculated by the processing unit 320.

  The communication unit 330 is constituted by a communication device, for example, and can execute a process of transmitting and receiving information between the operation terminal (DMC) 100 and the information processing device (DMS) 200.

  The output unit 340 is for outputting information and is not particularly limited. The communication unit 230 includes, for example, a display device for outputting an image and a sound output device for outputting sound. When the content data is played back by the playback device (DMR) 300, the playback result is displayed on the display device as an image or output as sound by the audio output device.

  The URL reception control unit 321 causes the communication unit 230 to execute a process of receiving the first playlist identification information or the second playlist identification information from the operation terminal (DMC) 100.

  The content data acquisition unit 322 performs processing for transmitting to the information processing apparatus (DMS) 200 a transmission request including the first playlist identification information or the second playlist identification information received by the communication unit 330. It is something to be made. The content data acquisition unit 322 causes the communication unit 330 to execute processing for acquiring content data as a response to the transmission request from the information processing apparatus (DMS) 200.

  The reproduction unit 323 reproduces the content data received by the communication unit 330.

  FIG. 5 is a diagram illustrating an example of a playlist selection screen. As shown in FIG. 5, the playlist selection screen 341 is output by the output unit of the operation terminal (DMC) 100. The playlist selection screen 341 includes, for example, a playlist selection field 3411, and the user can select one of the playlist names displayed in the playlist selection field 3411 (for example, “playlist A”). Is possible. For the content specified by the playlist corresponding to the playlist name selected by the user, for example, the song title 3412 and the playback time 3413 may be displayed.

  Further, the playlist selection screen 341 may include, for example, a reproduction start button 3415, a reproduction stop button 3416, and the like. The user may start playback of a playlist by pressing a playback start button 3415 or stop playback of a playlist by pressing a playback stop button 3416.

  FIG. 6 is a flowchart showing a flow of processing executed by the operation terminal. As shown in FIG. 6, the operation terminal (DMC) 100 acquires device information of the playback device (DMR) 300 from the playback device (DMR) 300 (step S101). Subsequently, the operation terminal (DMC) 100 accepts a playlist selection from the user (step S102). Subsequently, the operation terminal (DMC) 100 acquires the URL of the playlist from the information processing apparatus (DMS) 200 (step S103).

  The operation terminal (DMC) 100 determines the device information acquired from the playback device (DMR) 300 (step S104). If the operation terminal (DMC) 100 determines that the playback device (DMR) 300 is compatible with playlist playback defined by DLNA as a result of the determination ("Yes" in step S105), the information processing device Among the URLs acquired from the (DMS) 200, a URL for a playback apparatus that supports playlist playback defined by DLNA is selected (step S106), and the process proceeds to step S108.

  If the operation terminal (DMC) 100 determines that the playback device (DMR) 300 does not support playlist playback defined by DLNA ("No" in step S105), the information processing device Among the URLs acquired from the (DMS) 200, a URL for a playback apparatus that does not support playlist playback defined by DLNA is selected (step S107), and the process proceeds to step S108.

  The operation terminal (DMC) 100 transmits the selected URL to the playback device (DMR) 300 and ends the process. Note that steps S101 and S104 may be executed at any timing as long as they are before step S105.

  FIG. 7 is a flowchart illustrating a flow of processing executed by the information processing apparatus. As illustrated in FIG. 7, the information processing device (DMS) 200 receives an HTTP (HyperText Transfer Protocol) GET for the URL of the playlist from the playback device (DMR) 300 (step S <b> 201). Subsequently, the information processing apparatus (DMS) 200 determines the URL specified by HTTP GET (step S202). When the information processing apparatus (DMS) 200 determines that the URL is a URL for DMR corresponding to playlist reproduction defined by DLNA as a result of the determination (“Yes” in step S203), The process proceeds to S204. The information processing device (DMS) 200 sequentially transmits the content data from the first song to the last song as a response to the playback device (DMR) 300, and disconnects the HTTP connection (step S204).

  When the information processing apparatus (DMS) 200 determines that the URL is a URL for DMR that does not support play list reproduction defined by DLNA as a result of the determination ("No" in step S203). The process proceeds to step S205. The information processing device (DMS) 200 transmits the content data of the first song as a response to the playback device (DMR) 300 (step S205). The information processing device (DMS) 200 transmits the content data of the second song and the third song to the playback device (DMR) 300 without disconnecting the HTTP connection after transmitting the content data of the first song (step S206).

  The information processing apparatus (DMS) 200 disconnects the HTTP connection after transmitting the content data of the last song (step S207), and ends the process. Although FIG. 7 shows an example in which music data is used as content data, the content data is not limited to music data. FIG. 7 shows the case where three or more pieces of music data as an example of content data are transmitted. However, the music data as an example of content data to be transmitted is not limited to three or more pieces of music data. It may be a song.

  FIG. 8 is a flowchart showing the flow of processing executed by the playback apparatus. As shown in FIG. 8, the playback device (DMR) 300 acquires the URL of the playlist from the operation terminal (DMC) 100 (step S301). The playback device (DMR) 300 performs HTTP GET on the acquired URL (step S302). The playback device (DMR) 300 plays back the content data acquired from the information processing device (DMS) 200 as a response (step S303), and ends the process.

  FIG. 9 is an explanatory diagram for explaining content data transmitted from the information processing apparatus to the reproduction apparatus. As shown in FIG. 9, the DMS (information processing apparatus) 200 includes content data 1 to n in the playback order of playlists in one HTTP response and transmits the content data 1 to n to the playback apparatus (DMR) 300. A DMR (reproducing device) 300 reproduces the received content data. As a result, it can appear that the DMR (reproducing device) 300 is reproducing the content data according to the playlist. In addition, this makes it possible for the DMR (playback apparatus) 300 that does not support playlist playback defined by DLNA to view the received content data 1 to n as a single content, so that playlist playback can be performed.

  If the DMS (information processing apparatus) 200 has a format conversion capability for content data, the content data can be transmitted after being converted into a content format supported by the DMR (reproducing apparatus) 300. At that time, the DMS (information processing apparatus) 200 sets the URL of the playlist corresponding to the content format that can be converted by the DMS (information processing apparatus) 200 on the CDS (Content Directory Service). As a result, the DMC (operation terminal) 100 can select the URL corresponding to the format supported by the DMR from the URL when passing the URL of the playlist to the DMR (reproducing device) 300. The DMS (information processing apparatus) 200 can also perform transmission by performing a cross-fade process on the connection between content data.

  FIG. 10 is a diagram illustrating an example of playlist identification information transmitted from the information processing apparatus to the operation terminal. FIG. 10 shows a case where playlist identification information transmitted from the information processing apparatus (DMS) 200 to the operation terminal (DMC) 100 is set to CDS. As shown in FIG. 10, a playlist URL is set as an example of playlist identification information, and a URL is set for each content data format. The operation terminal (DMC) 100 can select a URL having a format supported by the DMR (reproducing device) from these URLs.

  The playback apparatus 300 is not limited to DMR, and for example, DMP (digital media player) can also be used. For example, DMP can perform playlist playback by selecting a URL in a format that can be played back from the URL transmitted from the information processing apparatus 200 and acquiring content data from the information processing apparatus 200.

  By using such a mechanism, it is possible to cause the playback apparatus (DMR) 300 that does not support playlist playback to execute playlist playback. Further, the operation terminal (DMC) 100 that has issued a reproduction instruction to the reproduction apparatus (DMR) 300 can be disconnected from the network.

<2. Modification of First Embodiment>
In addition, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  FIG. 11 is a diagram illustrating a configuration of an information processing system according to a modification of the present embodiment. As shown in FIG. 11, also in the modification of the first embodiment, it is assumed that the operation terminal (DMC) 100A causes the playback device (DMR) 300A that does not support playlist playback to execute playlist playback. To do.

  In such a case, the operation terminal (DMC) 100A transmits the playlist URL to the proxy playback device (proxy DMR) 400, thereby performing playlist playback on the proxy playback device (proxy DMR) 400. Make a request. The proxy playback device (proxy DMR) 400 receives content data one by one from the information processing device (DMS) 200 according to the URL of the playlist, and sends the content data in the playlist to the playback device (DMR) 300A. Send one by one. As a result, playlist playback can be realized on the playback device (DMR) 300A that does not support playlist playback. Also, the operation terminal (DMC) 100A that has issued a reproduction instruction to the proxy reproduction apparatus (proxy DMR) 400 can be disconnected from the network, and the operation terminal (DMC) that has issued the reproduction instruction to the proxy reproduction apparatus (proxy DMR) 400 ( DMC) 100A can be turned off. It is assumed that the proxy playback device (proxy DMR) 400 can interpret the playlist format defined by DLNA.

<3. Summary>
According to the present embodiment, the information processing apparatus (DMS) 200 that provides a playlist connects the content data registered in the playlist in the order of the list to form one content, and the URL is sent to the operation terminal (DMC) 100. provide. When the operation terminal (DMC) 100 wants to instruct the reproduction apparatus (DMR) 300 that does not support reproduction of a playlist defined by DLNA to reproduce content data according to the playlist, the information processing apparatus The URL provided from the (DMS) 200 is passed to the playback device (DMR) 300. The playback device (DMR) 300 performs playlist playback by acquiring and playing back content data with respect to the URL received from the operation terminal (DMC) 100. Accordingly, it is possible to cause the playback device (DMR) 300 to perform playlist playback without changing the existing playback device (DMR) 300. Further, since only the information processing apparatus (DMS) 200 needs to be newly developed, there is a possibility that development costs can be suppressed.

  Also, the DMP can obtain the playlist reproduction by acquiring the URL of the playlist provided by the DMS and reproducing the content data according to the URL. As a result, playlist playback is also possible for DMP that does not support playlist playback.

DESCRIPTION OF SYMBOLS 110 Input part 120 Processing part 121 Device information acquisition part 122 URL acquisition part 123 Device information judgment part 124 URL selection part 125 URL transmission control part 130 Communication part 140 Storage part 200 Information processing apparatus 210 Storage part 211 Playlist 212 Content data 220 Process Unit 221 URL provision control unit 222 request reception control unit 223 request determination unit 224 content data transmission control unit 230 communication unit 300 playback device 310 storage unit 320 processing unit 321 URL reception control unit 322 content data acquisition unit 323 playback unit 330 communication unit 340 Output unit 341 Playlist selection screen 3411 Playlist selection field 3412 Song name 3413 Playback time 3415 Playback start button 3416 Playback stop button

Claims (7)

A play list in which a plurality of content data and each piece of content identification information for identifying each of the plurality of content data are arranged in order of reproduction of the plurality of content data and a first play for identifying the playlist A storage unit for storing list identification information and second playlist identification information obtained by converting the first playlist identification information;
When it is possible to perform continuous playback in which the plurality of content data is sequentially received and played back as a response to one transmission request with the operating terminal, the first playlist identification information is received from the operating terminal and A communication unit capable of executing a process of transmitting / receiving information to / from a playback device that receives the second playlist identification information from the operation terminal when continuous playback is impossible;
A request reception control unit that causes the communication unit to execute a process of receiving the transmission request including the first playlist identification information or the second playlist identification information from the playback device;
A request determination unit that determines which of the first playlist identification information and the second playlist identification information is included in the transmission request received by the communication unit;
When it is determined that the second playlist identification information is included in the transmission request, the second playlist identification information is converted into the first playlist identification information, and the first playlist identification information is converted. A content data transmission control unit that causes the communication unit to execute a process of connecting the plurality of content data in accordance with the reproduction order described in the playlist identified by and transmitting the content data as one content data to the reproduction device;
An information processing apparatus comprising: The content data transmission control unit
When the request determination unit determines that the first playlist identification information is included in the transmission request, the playback order described in the playlist identified by the first playlist identification information In accordance with the above, causing the communication unit to execute a process of sequentially transmitting each of the plurality of content data to the playback device,
The information processing apparatus according to claim 1. The content data transmission control unit
When the communication unit executes the process of connecting the plurality of content data and transmitting the content data as one content data to the playback device, the one content data is converted into a format that can be played back by the playback device, Using the content data obtained by conversion as data to be transmitted to the playback device,
The information processing apparatus according to claim 1. The content data transmission control unit
When connecting the plurality of content data, a crossfading process is performed on a joint portion of the plurality of content data.
The information processing apparatus according to claim 1. A play list in which a plurality of content data and each piece of content identification information for identifying each of the plurality of content data are arranged in order of reproduction of the plurality of content data and a first play for identifying the playlist Between the storage unit for storing the list identification information and the second playlist identification information obtained by converting the first playlist identification information, and the operation terminal, the plurality of content data as a response to one transmission request. The first playlist identification information is received from the operation terminal when continuous playback is possible by sequentially receiving and playing, and the second playlist identification is received from the operation terminal when the continuous playback is impossible. Communication unit capable of executing processing for transmitting / receiving information to / from a playback device that receives information The request reception control unit of the information processing apparatus including a request reception control unit, a request determination unit, and a content data transmission control unit, from the playback device to the first playlist identification information or the second playlist identification information. A step of causing the communication unit to execute a process of receiving the transmission request including:
Determining, by the request determination unit, which of the first playlist identification information and the second playlist identification information is included in the transmission request received by the communication unit;
When the content data transmission control unit determines that the second playlist identification information is included in the transmission request, the second playlist identification information is converted into the first playlist identification information. , Causing the communication unit to execute a process of connecting the plurality of content data according to the playback order described in the playlist identified by the first playlist identification information and transmitting the content data as one content data to the playback device Steps,
Including an information processing method. A communication unit capable of executing processing for transmitting and receiving information between the information processing device and the reproduction device;
The communication unit executes processing for acquiring, from the playback device, device information indicating whether or not continuous playback is possible in which the playback device sequentially receives and plays back a plurality of content data as a response to one transmission request. A device information acquisition unit
First playlist identification information and first playlist identification for identifying a playlist in which each piece of content identification information for identifying each of a plurality of content data is described in the order of reproduction of the plurality of content data A playlist identification information acquisition unit that causes the communication unit to execute processing for acquiring second playlist identification information obtained by converting information from the information processing device;
A device information determination unit that determines the device information acquired by the communication unit;
When the device information determination unit determines that the continuous playback by the playback device is possible, the first playlist identification information is selected, and the device information determination unit performs the continuous playback by the playback device. If it is determined that it is impossible, a playlist identification information selection unit that selects the second playlist identification information;
A playlist identification information transmission control unit that causes the communication unit to execute a process of transmitting the first playlist identification information or the second playlist identification information selected by the playlist identification information selection unit to the playback device;
An operation terminal comprising: An information processing system comprising an operation terminal, an information processing device, and a playback device,
The information processing apparatus includes:
A play list in which a plurality of content data and each piece of content identification information for identifying each of the plurality of content data are arranged in order of reproduction of the plurality of content data and a first play for identifying the playlist A storage unit for storing list identification information and second playlist identification information obtained by converting the first playlist identification information;
When it is possible to perform continuous playback in which the plurality of content data is sequentially received and played back as a response to one transmission request with the operating terminal, the first playlist identification information is received from the operating terminal and A communication unit capable of executing a process of transmitting / receiving information to / from a playback device that receives the second playlist identification information from the operation terminal when continuous playback is impossible;
A request reception control unit that causes the communication unit to execute a process of receiving the transmission request including the first playlist identification information or the second playlist identification information from the playback device;
A request determination unit that determines which of the first playlist identification information and the second playlist identification information is included in the transmission request received by the communication unit;
When it is determined that the second playlist identification information is included in the transmission request, the second playlist identification information is converted into the first playlist identification information, and the first playlist identification information is converted. A content data transmission control unit that causes the communication unit to execute a process of connecting the plurality of content data in accordance with the reproduction order described in the playlist identified by and transmitting the content data as one content data to the reproduction device;
Have
The operation terminal is
A communication unit capable of executing a process of transmitting and receiving information between the information processing apparatus and the reproduction apparatus;
A device information acquisition unit that causes the communication unit to execute processing for acquiring device information indicating whether or not the continuous playback by the playback device is possible;
A playlist identification information acquisition unit that causes the communication unit to execute a process of acquiring the first playlist identification information and the second playlist identification information from the information processing device;
A device information determination unit that determines the device information acquired by the communication unit;
When the device information determination unit determines that the continuous playback by the playback device is possible, the first playlist identification information is selected, and the device information determination unit performs the continuous playback by the playback device. If it is determined that it is impossible, a playlist identification information selection unit that selects the second playlist identification information;
A playlist identification information transmission control unit that causes the communication unit to execute a process of transmitting the first playlist identification information or the second playlist identification information selected by the playlist identification information selection unit to the playback device;
An information processing system.

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