JP2008225119A - Content reproduction device, content reproduction method, content reproduction program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reproduce a content by streaming reproduction, even after a purchased content is deleted. <P>SOLUTION: When reproduction instruction of the content is received by a receiving section 108, it is detected whether or not, the content which the reproduction instruction is received by a detecting section 109, is recorded in the recording medium. When it is detected that the content is not recorded in a recording medium 102, and right information of the content which the reproduction instruction is received, is acquired by an acquiring section 110, it is determined whether or not, streaming reproduction information which is related to the right information is extracted by an extraction section 111. When it is determined that the streaming reproduction information is extracted, streaming reproduction from a distribution server is performed by control of a reproduction control section 112. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a content playback apparatus, a content playback method, a content playback program, and a recording medium for streaming playback of deleted content. However, the use of the present invention is not limited to the above-described content reproduction device, content reproduction method, content reproduction program, and recording medium.

  Conventionally, a deletion history is created when the owned content is deleted, the deletion history is displayed on the display screen when the user gives an instruction, and the deletion content selected from the deletion history is displayed on the external information device. There is a terminal device that requests transfer (for example, see Patent Document 1 below).

JP 2006-294172 A

  However, with the technology of Patent Document 1 described above, the content deleted from the recording medium can be re-recorded on the recording medium by being transferred from another information device, and can be viewed or listened to. As an example, there is a problem that viewing or listening cannot be performed when there is no space and recording cannot be performed again. In addition, in order to create a deletion history of the content deleted from the recording medium, for example, when the content is purchased, if the recording medium is not recorded because there is no free space, this content is specified. An example of such a problem is that it cannot be recorded again on a recording medium and cannot be viewed or listened to.

  In order to solve the above-described problems and achieve the object, the content playback apparatus according to the first aspect of the present invention is a content playback apparatus that records content purchased from a distribution server on a recording medium, and accepts reception of the content playback instruction. Means for detecting whether or not the content whose playback instruction has been received by the receiving means is recorded on the recording medium, and acquisition of rights information issued when the content is purchased from a distribution server And a reproduction control means for performing streaming reproduction from the distribution server when the content is detected not to be recorded on the recording medium by the detection means and the right information is acquired by the acquisition means. It is characterized by providing.

  According to a seventh aspect of the present invention, there is provided a content reproduction method in a content reproduction apparatus for recording content purchased from a distribution server on a recording medium, wherein the content reproduction method includes a reception step for receiving the content reproduction instruction, and the reception step. A detection step of detecting whether or not the content for which the reproduction instruction has been received is recorded on the recording medium; an acquisition step of acquiring right information issued when the content is purchased from a distribution server; and the detection step A reproduction control step of performing streaming reproduction from the distribution server when it is detected that the content is not recorded on the recording medium and the right information is acquired by the acquisition step.

  According to an eighth aspect of the present invention, a content reproduction program causes a computer to execute the content reproduction method according to the seventh aspect.

  A recording medium according to a ninth aspect of the invention is characterized in that the content reproduction program according to the eighth aspect is recorded in a computer-readable state.

  Exemplary embodiments of a content reproduction apparatus, a content reproduction method, a content reproduction program, and a recording medium according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Embodiment)
(Functional configuration of content playback device)
First, a functional configuration of the content reproduction apparatus 100 according to the embodiment of the present invention will be described. FIG. 1 is a block diagram showing a functional configuration of the content reproduction apparatus according to the present embodiment.

  In FIG. 1, the content reproduction apparatus 100 includes an output unit 101, a recording medium 102, a purchase unit 103, a determination unit 104, a deletion unit 105, a determination unit 106, an association unit 107, a reception unit 108, A detection unit 109, an acquisition unit 110, an extraction unit 111, and a reproduction control unit 112 are provided. The output unit 101 outputs content. The content is audio information, video information, character information, and the like. Specifically, the output unit 101 includes, for example, a speaker that outputs audio information and a display screen that outputs video information and character information.

  The recording medium 102 records content purchased from the distribution server. The recording medium 102 may record right information issued when the content is purchased. The right information is information on a list of contents purchased in the past, and even if the contents themselves are deleted from the recording medium 102, they are not deleted from the list. Further, the right information may be recorded on the distribution server that distributes the content without being recorded on the recording medium 102. Here, when the right information is recorded in the distribution server, the right information can be managed for each content reproduction apparatus 100 or for each user.

  The purchase unit 103 purchases content from the distribution server. Specifically, for example, content can be purchased from a distribution server that provides a content sales service, a content subscription service, or the like via a network. These services issue rights information when purchasing content. Specifically, for example, the content sales service purchases content by paying a predetermined amount. The purchased content can be streamed. In addition, for example, the content subscription service allows a user to pay a predetermined contract fee and download or stream playback content of a predetermined content group only during the contract period.

  The determination unit 104 determines whether the content purchased by the purchase unit 103 is to be recorded on the recording medium 102. Specifically, for example, it is determined whether the purchased content is recorded on the recording medium 102 and read out from the recording medium 102 and played back, or is not recorded on the recording medium 102 but played back by streaming playback. The determination unit 104 may determine whether to record the content on the recording medium 102 according to an instruction from the user. Further, the determination unit 104 may determine whether to record the content purchased by the purchase unit 103 on the recording medium 102 based on the free space of the recording medium 102. Specifically, for example, if the recording medium 102 has a free space for recording the purchased content, it is determined that the recording medium 102 is to be recorded. Further, for example, when the recording medium 102 does not have enough free space for recording purchased content, the user may be notified that there is no free space for recording.

  The deletion unit 105 deletes the content recorded on the recording medium 102. Specifically, for example, the file of the content itself recorded on the recording medium 102 is deleted. In addition, when the deletion unit 105 deletes the content purchased by the purchase unit 103, the right information is not deleted.

  The determination unit 106 determines whether to perform streaming playback from the distribution server after the content deleted by the deletion unit 105 is deleted. Specifically, for example, when streaming playback from the distribution server is possible, it is determined whether or not the content is to be streamed after being deleted from the recording medium 102. The determination unit 106 may determine whether or not to perform streaming playback from the distribution server after deleting the content, according to an instruction from the user. When the determination unit 106 determines to perform streaming playback, streaming playback information is generated. The streaming reproduction information is information indicating whether or not the content is reproduced by streaming reproduction from the distribution server even if the content is not recorded on the recording medium 102. The streaming playback information is information for specifying content to be played back by streaming, and may be associated with right information.

  The association unit 107 associates the streaming reproduction information with the right information issued when the purchase unit 103 purchases the content when the determination unit 104 determines that the content is not recorded on the recording medium 102. The streaming reproduction information may be automatically generated for the content purchased by the purchase unit 103. Further, the association unit 107 associates the streaming reproduction information with the right information when the determination unit 106 determines to perform streaming reproduction from the distribution server. Therefore, even when the content recorded on the recording medium 102 is deleted, streaming reproduction from the distribution server can be performed by associating the streaming reproduction information with the right information. Thus, for example, even if the content playback list includes content recorded on the recording medium 102 and content deleted after purchase, playback can be performed along the playback list.

  The accepting unit 108 accepts a content reproduction instruction. Specifically, for example, a content reproduction instruction is received from a user. The content that receives the reproduction instruction is content recorded on the recording medium 102, content that has been deleted from the recording medium 102 but has right information, and the like. In addition, the reception unit 108 may receive a reproduction instruction for a reproduction list including a plurality of contents.

  The detection unit 109 detects whether or not the content whose reproduction instruction has been received by the reception unit 108 is recorded on the recording medium 102. Specifically, for example, it is detected whether or not it is recorded on the recording medium 102 based on the content specific information. The specific information may be, for example, metadata such as a title name or author name of the content, a content ID (IDentifier) such as a copyright number, or an identification number in each service. Further, it may be information including a feature amount of the content or a part of the content. By including the feature amount and part of the content, it is possible to easily identify the same content when there is a difference in version such as a recording environment.

  The acquisition unit 110 acquires right information issued when the content is purchased from the distribution server. The acquisition unit 110 acquires right information from the distribution server or the recording medium 102. Further, the acquisition unit 110 may acquire right information from another device owned by the same user.

  The extraction unit 111 extracts streaming reproduction information associated with the right information and indicating whether or not to perform streaming reproduction. The streaming reproduction information may be associated with the right information, or may be stored separately from the right information. Further, the streaming reproduction information may be recorded on the recording medium 102 or may be recorded on the distribution server. Here, when the streaming playback information is recorded in the distribution server, since the streaming playback information associated with the right information can be managed for each content playback device 100 or for each user, the purchased content is recorded. Streaming playback can be performed regardless of whether the device is a device. Therefore, for example, even if the device does not record the purchased content, streaming playback can be performed if the user has recorded the purchased content in another device.

  When the detection unit 109 detects that the content is not recorded on the recording medium 102 and the acquisition unit 110 acquires the right information, the playback control unit 112 performs streaming playback from the distribution server. Further, the reproduction control unit 112 may perform streaming reproduction from the distribution server when the streaming reproduction information is extracted by the extraction unit 111. In this case, the content may not be played when the streaming information is not extracted even if the right information is acquired.

(Content playback processing procedure of content playback device)
Next, a content reproduction processing procedure of the content reproduction apparatus 100 according to the present embodiment will be described. FIG. 2 is a flowchart showing a content reproduction processing procedure of the content reproduction apparatus according to this embodiment. In the flowchart of FIG. 2, first, until the content reproduction instruction is received by the reception unit 108 (step S201: No loop), and when the content reproduction instruction is received (step S201: Yes), the detection unit 109 It is detected whether the content accepted in step S201 is recorded on the recording medium 102 (step S202).

  If it is detected in step S202 that the content is not recorded on the recording medium 102 (step S202: No), the acquisition unit 110 determines whether the content right information accepted in step S201 has been acquired (step S203). ). If it is determined in step S203 that rights information has been acquired (step S203: Yes), whether or not the streaming reproduction information associated with the rights information determined to have been acquired in step S203 is extracted by the extraction unit 111. Judgment is made (step S204).

  If it is determined in step S204 that the streaming reproduction information has been extracted (step S204: Yes), streaming reproduction from the distribution server is performed under the control of the reproduction control unit 112 (step S205), and the series of processing ends. On the other hand, when it is detected in step S202 that the data is recorded on the recording medium 102 (step S202: Yes), the content is read from the recording medium 102 and played back, and normal playback is performed (step S206), and the series of processing ends. To do.

  Further, when the right information cannot be acquired in step S203 (step S203: No), and when the streaming reproduction information is not extracted in step S204 (step S204: No), the series of processes is terminated without reproducing the content.

  In the flowchart of FIG. 2, it is determined whether or not the information is recorded on the recording medium 102 in step S202, and whether or not the right information is acquired in step S203, but is not limited thereto. . Specifically, for example, step S202 and step S203 may be omitted, and the process may proceed to step S204 to determine whether or not streaming reproduction information has been extracted. If the streaming reproduction information is not extracted in step S204: No, the process proceeds to step S206, and normal reproduction may be performed.

  Further, in the flowchart of FIG. 2, it is determined whether or not the streaming reproduction information is extracted in step S204, but the present invention is not limited to this. Specifically, for example, when step S204 is omitted and the right information is acquired in step S203: Yes, the process may proceed to step S205 to perform streaming reproduction.

  As described above, according to the content reproduction apparatus 100 of the present embodiment, the content that has been accepted for reproduction by the acceptance unit 108 is detected by the detection unit 109 as not being recorded on the recording medium 102, and is acquired by the acquisition unit 110. When the right information issued when the content is purchased from the distribution server is acquired, the reproduction control unit 112 performs streaming reproduction from the distribution server. Therefore, when the content for which the playback instruction has been received is content that has been deleted after purchase, streaming playback can be performed. As a result, for example, when the recording medium 102 has insufficient free space, the user can view or listen to the purchased content by streaming playback even if the content is deleted.

  Further, according to the content reproduction apparatus 100 of the present embodiment, the reproduction control unit 112 performs streaming reproduction from the distribution server when the extraction reproduction unit 111 extracts the streaming reproduction information. Therefore, if the content for which the playback instruction has been received is not recorded on the recording medium 102, streaming playback can be performed if the streaming playback information is extracted. Thus, for example, if streaming playback information is extracted, the user can view or listen to the content by streaming playback even if no content is recorded on the recording medium 102.

  Further, according to the content reproduction apparatus 100 of the present embodiment, the determination unit 104 determines whether or not the content purchased from the distribution server by the purchase unit 103 is recorded on the recording medium 102. If the determination unit 104 determines not to record the recording medium 102, the associating unit 107 associates the streaming reproduction information with the right information issued when the purchase unit 103 purchases the content. Therefore, even if the purchased content is not recorded on the recording medium 102, the streaming reproduction can be performed by associating the streaming reproduction information with the right information. As a result, for example, when the recording medium 102 has insufficient free space, the user can view or listen to the content through streaming playback without downloading the purchased content.

  Further, according to the content reproduction apparatus 100 of the present embodiment, the determination unit 104 determines whether or not to record the content purchased by the purchase unit 103 on the recording medium 102 based on the free capacity of the recording medium 102. . Accordingly, when the recording medium 102 has free space, the purchased content is recorded on the recording medium 102, and when the recording medium 102 does not have free space, the purchased content is not recorded on the recording medium 102 and streaming playback is performed. Can do. As a result, the user can purchase content without worrying about the free capacity of the recording medium 102.

  Further, according to the content reproduction apparatus 100 of the present embodiment, it is determined whether or not to perform streaming reproduction from the distribution server after the content deleted by the deletion unit 105 is deleted by the determination unit 106. When the determining unit 106 determines to perform streaming playback from the distribution server, the associating unit 107 associates the streaming playback information with the right information. Therefore, when the purchased content is deleted, it is possible to determine whether to perform streaming playback after the deletion. As a result, when deleting the purchased content, the user can determine whether or not the content that the user wants to view or listen to after playback is to be played back by streaming playback.

  Further, according to the content reproduction apparatus 100 of the present embodiment, the acquisition unit 110 can acquire right information from the distribution server or the recording medium 102. Therefore, the right information may be managed by the own device or the distribution server. Thus, for example, even when rights information is managed in the distribution server, the user can view or listen to the purchased content by streaming playback even if the content is not recorded in the recording medium 102 if the content is purchased. Can do.

  Examples of the present invention will be described below. In the present embodiment, an example in which the content reproduction apparatus of the present invention is implemented by a music reproduction apparatus that can be connected to a distribution server via a network will be described. In the present embodiment, the content is described as music, but the present invention is not limited to this. For example, an image, a video, a character, etc. may be used.

(Hardware configuration of music player)
Next, a hardware configuration of the music playback device 300 according to the present embodiment will be described. FIG. 3 is a block diagram of the hardware configuration of the music playback device according to the present embodiment. In FIG. 3, a music reproducing device 300 includes a CPU 301, a ROM 302, a RAM 303, a magnetic disk drive 304, a magnetic disk 305, an optical disk drive 306, an optical disk 307, an audio I / F (interface) 308, and a speaker. 309, an input device 310, a video I / F 311, a display 312, and a communication I / F 313. Each component 301 to 313 is connected by a bus 320.

  First, the CPU 301 governs overall control of the music playback device 300. The ROM 302 records programs such as a boot program and a data update program. The RAM 303 is used as a work area for the CPU 301. That is, the CPU 301 controls the entire music reproducing device 300 by executing various programs recorded in the ROM 302 while using the RAM 303 as a work area.

  The magnetic disk drive 304 controls the reading / writing of the data with respect to the magnetic disk 305 according to control of CPU301. The magnetic disk 305 records data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, an HD (hard disk) or an FD (flexible disk) can be used.

  The optical disk drive 306 controls reading / writing of data with respect to the optical disk 307 according to the control of the CPU 301. The optical disk 307 is a detachable recording medium from which data is read according to the control of the optical disk drive 306. As the optical disc 307, a writable recording medium can be used. As a removable recording medium, in addition to the optical disk 307, an MO, a memory card, or the like may be used.

  The audio I / F 308 is connected to a speaker 309 for audio output. The speaker 309 outputs a sound obtained by D / A converting a predetermined sound signal in the sound I / F 308.

  Examples of the input device 310 include a remote controller having a plurality of keys for inputting characters, numerical values, various instructions, a keyboard, a touch panel, and the like. The input device 310 may be realized by any one form of a remote control, a keyboard, and a touch panel, but can also be realized by a plurality of forms.

  The video I / F 311 is connected to the display 312. Specifically, the video I / F 311 is output from, for example, a graphic controller that controls the entire display 312, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. And a control IC for controlling the display 312 based on the image data to be processed.

  The display 312 displays icons, cursors, menus, windows, or various data such as characters and images. As the display 312, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be used.

  The communication I / F 313 is connected to a network via wireless and functions as an interface between the music playback device 300 and the CPU 301. The communication I / F 313 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 301. Communication networks include LANs, WANs, public line networks and mobile phone networks. Specifically, the communication I / F 313 is configured by, for example, an FM tuner.

  The output unit 101, the recording medium 102, the purchase unit 103, the determination unit 104, the deletion unit 105, the determination unit 106, the association unit 107, the reception unit 108, the detection unit 109, and the acquisition unit 110 included in the content reproduction apparatus 100 illustrated in FIG. The extraction unit 111 and the reproduction control unit 112 are configured such that the CPU 301 executes a predetermined program using programs and data recorded in the ROM 302, RAM 303, magnetic disk 305, optical disk 307, and the like in the music reproduction device 300 shown in FIG. And the function is implement | achieved by controlling each part in the music reproduction apparatus 300. FIG.

  That is, the music playback device 300 of the embodiment executes the content playback program recorded in the ROM 302 as a recording medium in the music playback device 300, thereby providing the functions of the content playback device shown in FIG. It can be executed by the content reproduction processing procedure shown in FIG.

(Contents of music player playback process)
Next, the contents of processing of the music reproducing device 300 according to the present embodiment will be described. FIG. 4 is a flowchart showing the content of the playback process of the music playback device according to the present embodiment. In the flowchart of FIG. 4, first, it waits until a music playback instruction is received by the input device 310 (step S401: No loop). When a music playback instruction is received (step S401: Yes), the playback instruction is received in step S401. It is determined whether or not the music is in the music storage list (step S402). In step S <b> 402, the music storage list is a list of music recorded on the magnetic disk 305 or the optical disk 307. Further, the music storage list may be a list of music recorded in the connected device, for example, when connected to another device via the communication I / F 313.

  If it is determined in step S402 that it is not in the music storage list (step S402: No), it is determined whether it is in the music purchase list (step S403: Yes). In step S403, the music purchase list is a list of music purchased from a distribution server that sells music. When music is purchased from a plurality of distribution servers that provide different services, there may be a music purchase list for each distribution server. In step S403, it may be determined whether or not the user is on a music purchase list purchased by another device.

  If it is in the music purchase list in step S403 (step S403), it is determined whether or not the streaming playback information is ON (step S404). In step S404, the streaming playback information is information indicating whether or not streaming playback from the distribution server is performed when no music is recorded on the magnetic disk 305 or the optical disk 307. The streaming reproduction information may be associated with the music purchase list. If the streaming playback information is ON in step S404 (step S404: Yes), the music is streamed (step S405), and the series of processes is terminated.

  On the other hand, if it is in the music storage list in step S402 (step S402: Yes), it is read out from the magnetic disk 305 or the optical disk 307, and normal reproduction of the music is performed (step S406), and the series of processing is terminated. If the music purchase list is not found in step S403 (step S403: No), or if the streaming reproduction information is OFF (step S404: No), the music is not reproduced and the series of processes is terminated as it is.

  In the flowchart of FIG. 4, it is determined in step S404 whether the streaming playback information is ON, but the present invention is not limited to this. Specifically, for example, when it is not determined whether or not the streaming playback information is ON and the music purchase list is in step S403: Yes, the process may proceed to step S405 to perform streaming playback.

(Contents of music purchase processing of music playback device)
Next, the contents of the music purchase process of the music playback device 300 according to the present embodiment will be described with reference to FIG. FIG. 5 is a flowchart showing the contents of the music purchase process of the music reproducing apparatus according to the present embodiment. In FIG. 5, first, it waits until a music purchase instruction is received (step S501: No loop). When a music purchase instruction is received (step S501: Yes), the music for which the purchase instruction is received in step S501 is displayed. It is determined whether or not streaming playback is to be performed (step S502). In step S502, whether or not to perform streaming playback may be determined by accepting an instruction from the user, or the free space for recording music by detecting the free space of the magnetic disk 305 or the optical disk 307. You may judge by whether there is.

  When it is determined in step S502 that streaming playback is to be performed (step S502: Yes), specifically, for example, when an instruction to perform streaming playback is received from a user, or music is stored on the magnetic disk 305 or the optical disk 307. If there is no free space to be recorded, the streaming playback information is turned on (step S503), and the series of processes is terminated. The streaming playback information may be associated with the music purchase list, or may be recorded separately from the music purchase list. In step S503, for example, when the magnetic disk 305 or the optical disk 307 has no free space for recording music, the user may be notified. Specifically, the notification to the user may be, for example, voice information or text information such as “There is no free space. Do you want to play streaming?”.

  On the other hand, when it is determined in step S502 that streaming playback is not to be performed (step S502: No), specifically, for example, when an instruction not to perform streaming playback is received from a user, or to the magnetic disk 305 or the optical disk 307. If there is a free space for recording music, the streaming playback information is turned off (step S504). And a music is downloaded from a delivery server (step S505), and a series of processes are complete | finished. In step S505, the downloaded music is recorded on the magnetic disk 305 or the optical disk 307.

  In the flowchart of FIG. 5, the music whose streaming playback information is turned on in step S503 may be downloaded after the music purchase processing of FIG. In this case, for the downloaded music, the streaming playback information may be changed to OFF.

  In the flowchart of FIG. 5, the music player 300 performs the music purchase process of FIG. 5, but the present invention is not limited to this. For example, the music purchase process may be performed by a distribution server (not shown). In this case, in step S505, the music is distributed to the music playback device 300.

(Contents of music deletion process of music playback device)
Next, the contents of the music deletion process of the music playback device 300 according to the present embodiment will be described with reference to FIG. FIG. 6 is a flowchart showing the contents of the music deletion process of the music reproducing apparatus according to the present embodiment. In FIG. 6, first, it waits until a music deletion instruction is accepted (step S601: No loop), and when a music deletion instruction is accepted (step S601: Yes), whether or not the music is to be streamed after deletion. Judgment is made (step S602). In step S602, whether or not the music is to be played by streaming may be determined by receiving an instruction from the user.

  If it is determined in step S602 that the music is to be streamed after deletion (step S602: Yes), specifically, for example, if an instruction to stream the music after deletion is received from the user, the streaming playback information is turned ON. In this manner (step S603), a series of processing is terminated.

  On the other hand, if it is determined in step S602 that the music is not streamed after deletion (step S602: No), specifically, for example, if the user does not accept an instruction to stream the music after deletion, streaming playback is performed. The information is turned off (step S604), and the series of processing ends.

  In the flowchart of FIG. 6, when an instruction to delete a song is accepted in step S601: Yes, it is determined whether or not the song is to be streamed after deletion in step S602. However, the present invention is not limited to this. Specifically, for example, step S602 may be omitted, and the process may proceed to step S603 to turn on the streaming reproduction information of all the songs for which the deletion instruction has been accepted.

  The music deleted in the flowchart of FIG. 6 may be re-downloadable even when the streaming reproduction information is ON or OFF. Further, for example, when the streaming playback information is turned off in step S604, a configuration in which the music cannot be downloaded again may be used.

(Contents of music purchase list)
Next, the contents of the music purchase list according to the present embodiment will be described with reference to FIG. FIG. 7 is an explanatory diagram showing the contents of a music purchase list according to the present embodiment. FIG. 7 shows a music purchase list 701, streaming playback information 702, and a music storage list 710. The streaming playback information 702 may be associated with the music purchase list 701 or may be a list different from the music purchase list 701. The music purchase list 701 and the music storage list 710 may be recorded on the magnetic disk 305 or the optical disk 307 of the music playback device 300, or may be recorded on a distribution server (not shown) that distributes music.

  The music purchase list 701 is an example of right information issued when music is purchased from a distribution server. Specifically, for example, it is a list of information related to music purchased by the user from the distribution server. Therefore, for example, in the music purchase list 701, information related to music deleted after purchase is also recorded. The information related to the music includes, for example, the title name of the music, metadata such as the author name, the music ID such as the copyright number, and the identification number in each service. The music purchase list 701 may be distinguished for each service provided by each distribution server. In addition, the music purchase list 701 may add information related to music purchased from other devices (devices other than the music playback device 300) by the same user to the list. Specifically, the music purchase list 701 is, for example, a list of information related to music purchased from a music sales service or a list of information related to music downloaded from the service during the contract period with the music subscription service. .

  When the streaming playback information 702 is turned on in step S503 in the flowchart of FIG. 5 and step S603 in the flowchart of FIG. 6 described above, the streaming playback information 702 is added to the corresponding music information in the list such as the music purchase list 701. Added. Further, the streaming reproduction information 702 may be turned off for the music in the music storage list 710 in the music purchase list 701, for example.

  The music storage list 710 is a list of information related to music recorded on the magnetic disk 305 or the optical disk 307. Specifically, for example, the music storage list 710 relates to only the music stored in the music playback device 300 when the same user stores different music by the music playback device 300 and other devices. It is a list of information.

  As described above, according to the music reproducing device 300 of the present embodiment, the content for which the receiving instruction has been received by the receiving unit 108 is detected by the detecting unit 109 as not being recorded on the recording medium 102, and the content is acquired by the acquiring unit 110. Is acquired from the distribution server, the reproduction control unit 112 performs streaming reproduction from the distribution server. Therefore, when the content for which the playback instruction has been received is content that has been deleted after purchase, streaming playback can be performed. As a result, for example, when the recording medium 102 has insufficient free space, the user can view or listen to the purchased content by streaming playback even if the content is deleted.

  Also, according to the music playback device 300 of the present embodiment, the playback control unit 112 performs streaming playback from the distribution server when the streaming playback information is extracted by the extraction unit 111. Therefore, if the content for which the playback instruction has been received is not recorded on the recording medium 102, streaming playback can be performed if the streaming playback information is extracted. Thus, for example, if streaming playback information is extracted, the user can view or listen to the content by streaming playback even if no content is recorded on the recording medium 102.

  Also, according to the music reproducing device 300 of the present embodiment, the determination unit 104 determines whether or not the content purchased from the distribution server by the purchase unit 103 is to be recorded on the recording medium 102. If the determination unit 104 determines not to record the recording medium 102, the associating unit 107 associates the streaming reproduction information with the right information issued when the purchase unit 103 purchases the content. Therefore, even if the purchased content is not recorded on the recording medium 102, the streaming reproduction can be performed by associating the streaming reproduction information with the right information. As a result, for example, when the recording medium 102 has insufficient free space, the user can view or listen to the content through streaming playback without downloading the purchased content.

  Further, according to the music reproducing device 300 of the present embodiment, the determination unit 104 determines whether to record the content purchased by the purchase unit 103 on the recording medium 102 based on the free space of the recording medium 102. Accordingly, when the recording medium 102 has free space, the purchased content is recorded on the recording medium 102, and when the recording medium 102 does not have free space, the purchased content is not recorded on the recording medium 102 and streaming playback is performed. Can do. As a result, the user can purchase content without worrying about the free capacity of the recording medium 102.

  Further, according to the music reproducing device 300 of the present embodiment, the content deleted by the deleting unit 105 is deleted by the determining unit 106, and then it is determined whether or not to perform streaming playback from the distribution server. When the determining unit 106 determines to perform streaming playback from the distribution server, the associating unit 107 associates the streaming playback information with the right information. Therefore, when the purchased content is deleted, it is possible to determine whether to perform streaming playback after the deletion. As a result, when deleting the purchased content, the user can determine whether or not the content that the user wants to view or listen to after playback is to be played back by streaming playback.

  Further, according to the music reproducing device 300 of the present embodiment, the acquisition unit 110 can acquire the right information from the distribution server or the recording medium 102. Therefore, the right information may be managed by the own device or the distribution server. Thus, for example, even when rights information is managed in the distribution server, the user can view or listen to the purchased content by streaming playback even if the content is not recorded in the recording medium 102 if the content is purchased. Can do.

  As described above, according to the content playback apparatus, content playback method, content playback program, and recording medium of the present invention, even if the music playback apparatus 300 does not receive the music for which the playback instruction has been received, If it is in the music purchase list 701 and the streaming playback information is ON, streaming playback can be performed. Thus, for example, even if the music is deleted when the free space of the magnetic disk 305 or the optical disk 307 is insufficient, the user can view or listen to the purchased music by streaming playback.

  Note that the content reproduction method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer, a workstation, or a mobile terminal device (mobile phone). This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

It is a block diagram which shows the functional structure of the content reproduction apparatus concerning this Embodiment. It is a flowchart which shows the content reproduction processing procedure of the content reproduction apparatus concerning this Embodiment. It is a block diagram which shows the hardware constitutions of the music reproduction apparatus concerning a present Example. It is a flowchart which shows the content of the reproduction | regeneration processing of the music reproduction apparatus concerning a present Example. It is the flowchart shown about the content of the music purchase process of the music reproduction apparatus concerning a present Example. It is the flowchart shown about the content of the music deletion process of the music reproduction apparatus concerning a present Example. It is explanatory drawing shown about the content of the music purchase list concerning a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Content reproduction apparatus 101 Output part 102 Recording medium 103 Purchasing part 104 Determination part 105 Deletion part 106 Determination part 107 Association part 108 Reception part 109 Detection part 110 Acquisition part 111 Extraction part 112 Playback control part

Claims (9)

In a content reproduction apparatus for recording content purchased from a distribution server on a recording medium,
Receiving means for receiving an instruction to reproduce the content;
Detecting means for detecting whether or not the content whose playback instruction has been received by the receiving means is recorded on the recording medium;
Obtaining means for obtaining right information issued when the content is purchased from a distribution server;
A reproduction control unit that performs streaming reproduction from the distribution server when the detection unit detects that the content is not recorded on the recording medium and the acquisition unit acquires the right information;
A content playback apparatus comprising: Extracting means for extracting streaming reproduction information indicating whether to perform streaming reproduction associated with the right information;
The content reproduction apparatus according to claim 1, wherein the reproduction control unit performs streaming reproduction from the distribution server when streaming reproduction information is extracted by the extraction unit. Purchasing means for purchasing content from the distribution server;
Determining means for determining whether to record the content purchased by the purchasing means on a recording medium;
An association means for associating the streaming playback information with the right information issued when the content is purchased by the purchase means when it is determined by the determination means not to be recorded on a recording medium;
The content reproduction apparatus according to claim 2, further comprising:   4. The content reproduction apparatus according to claim 3, wherein the determination unit determines whether or not to record the content purchased by the purchase unit on the recording medium based on a free capacity of the recording medium. Deleting means for deleting the content recorded on the recording medium;
Determining means for determining whether to perform streaming playback from the distribution server after deleting the content deleted by the deleting means;
The content reproduction apparatus according to claim 3, wherein the association unit associates the streaming reproduction information with the right information when the determination unit determines to perform streaming reproduction from the distribution server.   The content reproduction apparatus according to claim 1, wherein the acquisition unit acquires the right information from the distribution server or the recording medium. In a content reproduction method in a content reproduction apparatus for recording content purchased from a distribution server on a recording medium,
A reception step of receiving an instruction to reproduce the content;
A detection step of detecting whether or not the content whose playback instruction has been received by the reception step is recorded on the recording medium;
An acquisition step of acquiring right information issued when the content is purchased from a distribution server;
When the detection step detects that the content is not recorded on the recording medium and the right information is acquired by the acquisition step, a reproduction control step of performing streaming reproduction from the distribution server;
A content reproduction method comprising:   A content reproduction program for causing a computer to execute the content reproduction method according to claim 7.   A computer-readable recording medium on which the content reproduction program according to claim 8 is recorded.

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