JP2007141374A - Reproducing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce irritation of a user as much as possible even when a transferred file is reproduced after file transfer of contents data is finished. <P>SOLUTION: In the reproducing equipment, contents data with supplementary information including contents data and supplementary information being information supplemented to the contents data is acquired. File specific information specifying the file of the contents data with supplementary information is acquired, and a reproduction music list is made based on the file specifying information. The file specific information of contents data with supplementary information to be reproduced is acquired based on the reproduction music list made by the reproduction music list making means, the contents data with supplementary information of the file specified by the acquired file specifying information is reproduced. While reproduction is performed, the contents data with supplementary information is analyzed, the supplementary information is acquired, and the supplementary information list is made by registering the acquired supplementary information. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a playback device, and more particularly, to a playback device that plays back content data with supplementary information including content data and supplementary information that is information attached to the content data.

  A use form in which files such as music, still images, and moving images are transferred from a center device such as a personal computer to a playback device such as a portable storage, and the file is played back by the transferred playback device has become widespread. In such a content data transfer system composed of a center device and a playback device, a large number of files are stored in the hard disk drive of the center device, and this file includes content data, contents of the content data, etc. It is comprised by the incidental information showing.

  When transferring a file from a center device to a playback device, the center device and the playback device are often connected according to the USB (Universal Serial Bus) standard. In the USB standard, a general-purpose mass storage connection is used for the file transfer.

  In this mass storage connection, since the file management system of the center device directly accesses the hard disk drive of the playback device, the file management system of the playback device is not involved in file transfer. Therefore, the playback device cannot know what file access has occurred during file transfer.

When the mass storage connection is completed and the file management system of the playback device can manage the files on the hard disk drive, the playback device extracts the additional information from the content data with the additional information, and displays the additional information list of the content data. Generate. This incidental information list is a list obtained by extracting necessary information from the incidental information. The playback device uses the information stored in the supplementary information list to display a selection screen that allows the user to select content data, thereby providing an easy-to-use operating environment with a small screen display and fewer buttons. ing. Such configuration of content data including incidental information and generation of a management table are also disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-171684 (Patent Document 1).
JP 2004-171684 A

  However, in such a content data transfer system, if there are a large number of content data files to be transferred, even if the file transfer is completed, the playback device extracts the auxiliary information and generates the auxiliary information list. It takes a long time. For this reason, even if the user tries to reproduce the transferred content data, there is a problem that a long waiting time is generated until the reproduction is started, and the user is frustrated.

  Therefore, the present invention has been made in view of the above problems, and even when the transferred file is played after the file transfer of the content data is finished, the user's frustration is reduced as much as possible. An object is to provide a playback device.

In order to solve the above problems, a playback device according to the present invention provides:
Acquisition means for acquiring content data with additional information including content data and incidental information which is information incidental to the content data;
First storage means for storing the content data with supplementary information acquired by the acquisition means as a file;
Reproduction song list creation means for obtaining file identification information for identifying a file of content data with supplementary information from the first storage means, and creating a reproduction song list based on the file identification information;
Based on the reproduction song list created by the reproduction song list creation means, the file identification information of the content data with supplementary information to be reproduced is acquired, and the content with supplementary information of the file specified by the acquired file identification information Playback means for playing back data;
Analyzing the content data with supplementary information stored in the first storage means while the reproduction means is reproducing, obtaining the supplementary information, and registering the obtained supplementary information To create an incidental information list, an incidental information list creation means,
It is characterized by providing.

  In this case, the reproduction song list creation unit acquires file identification information of all content data files with additional information stored in the first storage unit, and registers the file identification information in the reproduction song list. You may make it do.

  In this case, the playback device may further include a selection unit that allows the user to select a file of content data with additional information to be registered at least at the beginning of the playback song list.

In addition, playback equipment
Second storage means for storing the content data with supplementary information registered in the supplementary information list;
Copy means for copying the content data with supplementary information registered in the supplementary information list from the first storage means to the second storage means;
A deletion means for deleting the content data with supplementary information stored in the first storage means after the reproduction based on the reproduction song list by the reproduction means is completed;
Further comprising
The reproduction unit may acquire the content data with the accompanying information from the first storage unit.

Further, the playback device acquires all file specifying information of the content data file with the accompanying information that is not registered in the accompanying information list, and creates a registration target list based on the acquired file specifying information. It further includes a target list creation means,
The supplementary information list creating means acquires file specifying information of content data with supplementary information to be registered in the supplementary information list based on the registration target list, and stores the file specified by the acquired file specifying information. The incidental information of content data with incidental information may be registered in the incidental information list.

The playback device according to the present invention is:
Acquisition means for acquiring content data with additional information including content data and incidental information which is information incidental to the content data;
First storage means for storing the content data with supplementary information acquired by the acquisition means as a file;
Select one of the content data with supplementary information stored in the first storage means, analyze the selected content data with supplementary information, obtain the supplementary information, and obtain this An incidental information list creating means for creating an incidental information list by registering incidental information; and
Registering information for specifying the selected content data with accompanying information, and creating a reproduction song list, a reproduction song list creating means,
Based on the reproduction song list created by the reproduction song list creation unit, the content data with supplementary information to be reproduced is obtained, and the obtained content data with supplementary information is reproduced;
It is characterized by providing.

  In this case, the playback device analyzes the content data with supplementary information that is not registered in the supplementary information list while the reproduction means is performing reproduction, and adds the supplementary information to the supplementary information list. In addition to the registration, an additional registration means may be further provided for additionally registering information specifying content data with supplementary information registered in the supplementary information list in the reproduction song list.

  In this case, the playback device may further include an arbitration unit that performs arbitration so that the playback unit and the additional registration unit do not access the playback song list at the same time.

In addition, playback equipment
Second storage means for storing the content data with supplementary information registered in the supplementary information list;
Moving means for moving the content data with auxiliary information registered in the auxiliary information list from the first storage means to the second storage means;
Further comprising
The reproduction means may acquire the content data with the accompanying information from the second storage means.

The playback device control method according to the present invention includes:
Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with supplementary information as a file in a storage means;
Acquiring file specifying information for specifying a file of content data with supplementary information from the storage means, and creating a reproduction song list based on the file specifying information;
Acquiring file specifying information of content data with supplementary information to be reproduced based on the reproduction song list, and reproducing the content data with supplementary information of the file specified by the acquired file specifying information;
While performing the reproduction, the content data with supplementary information stored in the storage means is analyzed, the supplementary information is obtained, and the supplementary information is registered to obtain the supplementary information list. The steps of creating
It is characterized by providing.

The playback device control method according to the present invention includes:
Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
One of the content data with supplementary information stored in the storage means is selected, the selected content data with supplementary information is analyzed, the supplementary information is acquired, and the acquired supplementary information is acquired. Creating an incidental information list by registering,
Registering information for identifying the selected content data with accompanying information and creating a reproduction song list;
Acquiring content data with additional information to be reproduced based on the created reproduction song list, and reproducing the acquired content data with additional information;
It is characterized by providing.

The program according to the present invention is:
Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
Acquiring file specifying information for specifying a file of content data with supplementary information from the storage means, and creating a reproduction song list based on the file specifying information;
Acquiring file specifying information of content data with supplementary information to be reproduced based on the reproduction song list, and reproducing the content data with supplementary information of the file specified by the acquired file specifying information;
While performing the reproduction, the content data with supplementary information stored in the storage means is analyzed, the supplementary information is obtained, and the supplementary information is registered to obtain the supplementary information list. The steps of creating
Is performed by a playback device.

The program according to the present invention is:
Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
One of the content data with supplementary information stored in the storage means is selected, the selected content data with supplementary information is analyzed, the supplementary information is acquired, and the acquired supplementary information is acquired. Creating an incidental information list by registering,
Registering information for identifying the selected content data with accompanying information and creating a reproduction song list;
Acquiring content data with additional information to be reproduced based on the created reproduction song list, and reproducing the acquired content data with additional information;
Is performed by a playback device.

The recording medium according to the present invention is
Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
Acquiring file specifying information for specifying a file of content data with supplementary information from the storage means, and creating a reproduction song list based on the file specifying information;
Acquiring file specifying information of content data with supplementary information to be reproduced based on the reproduction song list, and reproducing the content data with supplementary information of the file specified by the acquired file specifying information;
While performing the reproduction, the content data with supplementary information stored in the storage means is analyzed, the supplementary information is obtained, and the supplementary information is registered to obtain the supplementary information list. The steps of creating
Is recorded on the playback device.

The recording medium according to the present invention is
Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
One of the content data with supplementary information stored in the storage means is selected, the selected content data with supplementary information is analyzed, the supplementary information is acquired, and the acquired supplementary information is acquired. Creating an incidental information list by registering,
Registering information for identifying the selected content data with accompanying information and creating a reproduction song list;
Acquiring content data with additional information to be reproduced based on the created reproduction song list, and reproducing the acquired content data with additional information;
Is recorded on the playback device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments described below do not limit the technical scope of the present invention.

[First Embodiment]
FIG. 1 is a block diagram for explaining a configuration of a content data transfer system 100 according to the first embodiment. As shown in FIG. 1, the content data transfer system 100 according to the present embodiment includes a center device 110 and a playback device 120. The center device 110 is configured by, for example, a personal computer such as a desktop type or a notebook type. The playback device 120 is configured by, for example, a small portable storage.

  The center device 110 includes, for example, a central processing unit (CPU) 130, a random access memory (RAM) 132, a read only memory (ROM) 134, a hard disk drive 136, and a communication interface 138. Are connected to each other via an internal bus 140.

  The playback device 120 also includes a CPU (Central Processing Unit) 150, a RAM (Random Access Memory) 152, a ROM (Read Only Memory) 154, a hard disk drive 156, a communication interface 158, and a display 160, for example. These are connected to each other via an internal bus 162.

  In the present embodiment, the communication interface 138 and the communication interface 158 are configured by a USB (Universal Serial Bus) interface, and the USB cable 170 is used between the communication interface 138 and the communication interface 158. It is connected.

  FIG. 2 is a diagram for explaining an example of the configuration of content data with supplementary information stored in the hard disk drive 136 of the center device 110. As shown in FIG. 2, the content data with supplementary information includes at least content data and supplementary information of the content data.

  The content data may be digital data such as music data, still image data, and moving image data. In the present embodiment, one file is constituted by content data with supplementary information including the content data and supplementary information.

  In the present embodiment, the content data with supplementary information is transferred as a file from the center device 110 to the playback device 120, and the playback device 120 acquires the transferred content data file with supplementary information to obtain a hard disk drive. The file is stored in 156 as a file.

  In the example of FIG. 2, content data with supplementary information when the content data is music data is shown. Therefore, in FIG. 2, an identifier, a song title, an artist, a genre, an album, and a codec format are stored as supplementary information in the content data with supplementary information. The supplementary information is not limited to the information exemplified here, but other information may be held, and some items listed here may be omitted. In the following description, the case where the content data is a music file will be described as an example.

  Next, processing performed by the playback device 120 after the user transfers a music file from the center device 110 to the playback device 120 will be described. Here, it is assumed that after the transfer of the music file is finished, the user instructs the playback device 120 to play the transferred music file in a state where registration to the incidental information list is not performed. In this case, in order to reduce the stress on the user, it is necessary to start playing the transferred music file in as short a time as possible.

  FIG. 3 shows a playback start process started when the user instructs the playback device 120 to play a music file not registered in the supplementary information list. In the playback device 120 according to the present embodiment, the user can selectively instruct playback of a normal music file for which an incidental information list has been created and playback of a music file for which an incidental information list has not yet been created. . For this reason, after transferring a music file from the center device 110 to the playback device 120, a user who wants to play the transferred music file immediately instructs the playback device 120 to play back music data for which no supplementary information list has been created. To do.

  In the present embodiment, this playback activation process is a process realized when the CPU 150 reads and executes a reproduction activation program stored in the ROM 154 or the hard disk drive 156.

  As shown in FIG. 3, when this playback activation process is executed, it is first determined whether or not there is content data with additional information not registered in the additional information list (step S100). As shown in FIG. 4, in the hard disk drive 156 of the playback device 120 according to this embodiment, a holder for storing content data with supplementary information that is not registered in the supplementary information list, and content data with supplementary information that has been registered. Are stored in different folders. That is, unregistered content data with supplementary information is stored in the “unregistered” folder, and registered content data with supplementary information is stored in the “registered” folder. In other words, the content data with supplementary information transferred from the center device 110 is stored in the “unregistered” folder of the hard disk drive 156 as it is.

  Therefore, in step S100, the playback device 120 determines whether or not at least one content data file with supplementary information exists in the “unregistered” folder.

  If it is determined in step S100 that there is no content data with unregistered supplementary information (step S100: NO), the user is notified by voice or screen display that there is no content data with supplemental information not registered. (Step S102), and this playback activation process is terminated.

  On the other hand, if it is determined that there is content data with unregistered additional information (step S100: YES), a registration target list is created based on the unregistered content data with additional information (step S104). Specifically, the playback device 120 searches for the “unregistered” folder and registers all the files stored in the “unregistered” folder in the registration target list.

  FIG. 5 is a diagram showing an example of the registration target list TB10 created at this time. As shown in FIG. 5, in the registration target list TB10, the file name, size, and file date / time of the file stored in the “unregistered” folder are registered and stored. Therefore, when this registration target list TB10 is created, it is not necessary to refer to the contents of the file, and it can be created in a very short time. Note that the items to be registered in the registration target list TB10 may omit other items as long as they include at least the file name. That is, it is sufficient that at least information that can specify a file is registered in the registration target list TB10.

  Next, as shown in FIG. 3, the playback device 120 creates a playback song list based on the registration target list TB10 (step S106). FIG. 6 is a diagram showing an example of the reproduction song list TB20 created in step S106. As shown in FIG. 6, the reproduction music list TB20 stores the file names of the music to be reproduced.

  Therefore, in step S106, the playback device 120 generates the file name in a very short time by extracting the file name from the registration target list TB10 and registering it in the playback song list TB20.

  Next, as shown in FIG. 3, the playback device 120 starts playback processing and incidental information list creation processing (step S108). In the present embodiment, the reproduction process and the incidental information list creation process are executed in parallel. By starting these two processes, this playback start process is completed.

  Next, the content of the reproduction process started in step S108 will be described based on FIG. FIG. 7 is a flowchart illustrating the content of the playback process executed by the playback device 120 according to the present embodiment. In the present embodiment, this reproduction process is a process realized by the CPU 150 reading and executing a reproduction program stored in the ROM 154 or the hard disk drive 156.

  As shown in FIG. 7, the playback device 120 first selects one playback song based on the playback song list TB20 (step S120). In the present embodiment, one song file is selected in order from the top of the playback song list TB20.

  Next, the playback device 120 starts playback of the selected song (step S122). Specifically, since the unregistered content data with accompanying information is stored in the “unregistered” folder, the playback device 120 converts the file having the file name selected in step S120 into the “unregistered” folder. Search for and find out. Then, the content data with accompanying information of the found file is read out and reproduced. Reading of the content data with the accompanying information is performed by dividing the content data into a predetermined amount of data. For this reason, access to the hard disk drive 156 is intermittently performed.

  When the reproduction of the selected file is completed, the reproducing device 120 determines whether or not all the songs in the reproduction song list TB20 have been reproduced (step S124). If all the songs have not been played back (step S124: NO), that is, if there are still songs that have not been played back, the process returns to step S120 described above, and the next song to be played back from the playback song list TB20. Select and continue playback.

  On the other hand, if it is determined that all the songs in the playback song list TB20 have been played back (step S124: YES), the playback device 120 ends this playback process.

  While the reproduction process shown in FIG. 7 is being executed, an idle time may occur in the CPU 150. For example, in the case of playing music, it is sufficient for the CPU 150 to access a file stored in the hard disk drive 156, read out the music data, and decode it at a rate of once every 2 to 5 seconds. . Therefore, using the free time, the playback device 120 executes the incidental information list creation process. In the reproduction process, it is not necessary to access the incidental information list TB30. For this reason, there is no problem even if the supplementary information list creation process is executed using the playback process in which the supplementary information list TB30 is not used.

  FIG. 8 is a flowchart for explaining the contents of the incidental information list creation process executed by the playback device 120 according to the present embodiment. In the present embodiment, the incidental information list creation process shown in FIG. 8 is a process realized by the CPU 150 reading and executing the incidental information list creation program stored in the ROM 154 or the hard disk drive 156.

  As shown in FIG. 8, the playback device 120 selects one file to be registered in the incidental information list based on the registration target list TB10 (step S140). In the present embodiment, one is selected in order from the top of the registration target list TB10.

  Next, the playback device 120 reads the selected file from the “unregistered” folder of the hard disk drive 156, and acquires the accompanying information (step S142). In other words, the content data with supplementary information of the selected file is analyzed, and the supplementary information contained in the content data with supplementary information is read.

  Next, the playback device 120 adds the read incidental information to the incidental information list (step S144). FIG. 9 is a diagram showing an example of the incidental information list TB30 according to the present embodiment. As shown in FIG. 9, in the present embodiment, the song title, artist, genre, album, and codec format are read from the content data with supplementary information as supplementary information and stored in the supplementary information list TB30. For this reason, in the present embodiment, the incidental information list TB30 includes a song title, an artist, a genre, an album, and a codec format. Furthermore, in the present embodiment, the incident information list TB30 stores the number of each file and the file path. A serial number for organizing the file is assigned to the number, and a file path (so-called full path) is stored in the file path as information necessary for accessing the file.

  Next, the playback device 120 copies the file registered in the incidental information list TB30 from the “unregistered” folder to the “registered” folder (step S146). Here, the reason why the file is copied without being deleted is that the music is reproduced by the reproduction process using the file stored in the “unregistered” folder.

  Next, the playback device 120 determines whether or not all files in the registration target list TB10 have been registered in the incidental information list TB30 (step S148). If all the files are not registered (step S148: NO), the process returns to the above-described step S140, the next file is selected, and the process of registering the incidental information in the incidental information list TB30 is repeated. By repeating this process, in the present embodiment, the incidental information list TB30 having the contents as shown in FIG. 9 is created.

  On the other hand, when all the files in the registration target list TB10 are registered in the incidental information list TB30 (step S148: YES), it is determined whether or not the reproduction of all the files in the reproduction song list TB20 in the reproduction process has been completed. (Step S150). If the reproduction process has not been completed (step S150: NO), the process of step S150 is repeated and waits.

  On the other hand, when the reproduction process is finished (step S150: YES), that is, when the reproduction of all the files in the reproduction song list TB20 is finished, all the files in the “unregistered” folder are deleted (step S150). S152). In other words, in the playback process, music is played back using the files stored in the “unregistered” folder, so the files in the “unregistered” folder are deleted until this playback process is completed. I do not. Then, when this reproduction process is completed, the files in the “unregistered” folder are deleted.

  As a result, the file structure shown in FIG. 4 is as shown in FIG. In other words, since the registration of the files in the “unregistered” folder to the incidental information list TB30 has been completed, the files in the “unregistered” folder disappear and are moved to the “registered” folder.

  As described above, according to the playback device 120 according to the present embodiment, playback starts even if content data with supplementary information newly transferred from the center device 110 to the playback device 120 is not registered in the supplementary information list TB30. Since it was made possible to do so, the convenience of the user can be improved and the feeling of irritation can be reduced. That is, the registration to the incidental information list TB30 requires a corresponding time since the incidental information is extracted after the content data file with the incidental information is once opened and analyzed. For this reason, in the present embodiment, the reproduction song list TB20 is created without reading the auxiliary information, and the reproduction is started based on the reproduction song list TB20. Therefore, the reproduction starts immediately after the file transfer. Can do.

[Second Embodiment]
In the first embodiment described above, the user could not select a song from which to start playback, but in the second embodiment, based on the file name, at least the file of the song to be played first is selected. It is made to be able to. Hereinafter, a different part from 1st Embodiment mentioned above is demonstrated.

  FIG. 11 is a diagram illustrating a flowchart for explaining the contents of the reproduction start processing according to the present embodiment, and corresponds to FIG. 3 in the first embodiment described above. This playback activation process is a process started when the user instructs the playback device 120 to play back music data for which the supplementary information list TB30 has not been created after the transfer of the music file from the center device 110 is completed. is there.

  In the present embodiment, this playback activation process is a process realized when the CPU 150 reads and executes a reproduction activation program stored in the ROM 154 or the hard disk drive 156.

  As shown in FIG. 11, the processes in step S100 and step S102 are the same as those in the first embodiment described above.

  However, when it is determined in step S100 that there is content data with supplementary information that is not registered in the supplementary information list TB30 (step S100: YES), the playback device 120 displays a playback file selection screen on the display 160 ( Step S200).

  FIG. 12 is a diagram showing an example of a playback file selection screen W10 displayed on the display 160 according to the present embodiment. As shown in FIG. 12, a list of file names of files in the folder selected by the user is displayed on the reproduction file selection screen W10. That is, the reproduction file selection screen W10 has the same display mode as the normal file operation screen. Based on the file name displayed on the reproduction file selection screen W10, the user selects a file to be reproduced by operating the cursor CR. Here, it is assumed that the user has selected the file name “aaa03.mp3”.

  Therefore, the playback device 120 determines whether or not the user has selected one file after displaying the playback file selection screen W10 (step S202), and if not selected (step S202: NO). The process of step S202 is repeated and waited.

  When the user selects one file (step S202: YES), the playback device 120 creates a playback song list TB20 (step S204). FIG. 13 is a diagram showing an example of a reproduction song list TB20 created in the present embodiment. As can be seen from FIG. 13, in the present embodiment, the file name of the file selected by the user is registered at the head of the reproduction song list TB20. All files existing in the folder containing the file selected by the user are additionally registered after the file selected by the user. That is, the file names of all files in the “unregistered” folder are additionally registered in the reproduction song list TB20. For this reason, even when the reproduction of the file selected by the user is completed, the reproduction of the file in the same folder automatically starts based on the reproduction music list TB20.

  Next, as shown in FIG. 11, the playback device 120 creates a registration target list TB10 (step S206). That is, the playback device 120 searches the “unregistered” folder, extracts all the files in the “unregistered” folder, and registers the file names and the like in the registration target list TB10. The registration target list TB10 created here is the same as that shown in FIG.

  Next, as shown in FIG. 11, the playback device 120 starts playback processing and incidental information list creation processing (step S208). The reproduction process and the incidental information list creation process executed in this embodiment are the same as those in the first embodiment described above.

  That is, the reproduction process shown in FIG. 7 is started, and the files stored in the reproduction song list TB20 are sequentially reproduced. Also, the incidental information list creation process shown in FIG. 8 is started, and the incidental information list is created based on the idle time of the CPU 150 during the reproduction process. Thereby, the incidental information list TB30 shown in FIG. 9 is created.

  As described above, the playback device 120 according to the present embodiment also starts playback even if the content data with supplementary information newly transferred from the center device 110 to the playback device 120 is not registered in the supplementary information list TB30. Will be able to. For this reason, a user's convenience can be improved and irritation can be reduced.

  In addition, since the user can select the music to be played first on the file selection screen W10, the user can play from the music that the user most wants to play.

  In the present embodiment, the number of files that the user can select on the playback file selection screen W10 is one, but the number of files that can be selected can be arbitrarily changed, and the user can select a plurality of files. You may do it.

[Third Embodiment]
The third embodiment is a modification of the first embodiment described above, in which a reproduction process is performed while creating a reproduction song list TB20 and an accompanying information list TB30. Hereinafter, a different part from 1st Embodiment mentioned above is demonstrated.

  FIG. 14 is a flowchart illustrating the contents of the incidental information list creation processing according to the present embodiment. In the incidental information list creation process shown in FIG. 14, after the transfer of the music file from the center device 110 is completed, the user instructs the reproduction device 120 to reproduce the music data for which the incidental information list TB30 has not been created. It is a process that is started.

  Further, in the present embodiment, this reproduction activation process is a process realized by the CPU 150 reading and executing an incidental information list creation program stored in the ROM 154 or the hard disk drive 156.

  As shown in FIG. 14, when the incidental information list creation process is executed, it is first determined whether or not there is content data with additional information not registered in the incidental information list (step S300). That is, the playback device 120 determines whether at least one content data with supplementary information exists in the “unregistered” folder.

  If it is determined in step S300 that there is no content data with unregistered supplementary information (step S300: NO), the user is notified by voice or screen display that there is no content data with supplemental information not registered. In step S302, the incidental information list creation process is terminated.

  On the other hand, when it is determined that there is content data with unregistered additional information (step S300: YES), one content data with unregistered additional information is selected (step S304). That is, one file stored in the “unregistered” folder is selected. For example, in the present embodiment, the first file when the file names are arranged in ascending order is selected.

  Next, the playback device 120 analyzes the content of the selected content data with supplementary information, acquires the supplementary information included therein, and registers it in the supplementary information list TB30 (step S306).

  Next, the playback device 120 moves the selected content data file with supplementary information from the “unregistered” folder to the “registered” folder (step S308). That is, the selected content data file with supplementary information is deleted from the “unregistered” folder.

  Next, the playback device 120 registers the selected content data with additional information in the playback song list TB20 (step S310). Thereby, a reproduction music list TB20 as shown in FIG. 15 is created. That is, a reproduction song list TB20 is created in which only one file path of the selected content data with accompanying information is stored.

  Here, the file path is an example of information for specifying the content data file with supplementary information stored in the “registered” folder. Therefore, the information for specifying the file is not limited to the file path, and can be substituted by, for example, “number”.

  Next, the reproduction music list TB20 determines whether or not the reproduction process has already been activated (step S312). If the reproduction process is not activated (step S312: NO), the reproduction process is activated (step S314). On the other hand, when the reproduction process is activated (step S312: YES), the process of step S314 is passed. That is, step S314 is a process that is executed only once at the beginning when this incidental information list creation process is activated.

  Next, the playback device 120 determines whether there is still unregistered content data with additional information (step S316). That is, it is determined whether a file exists in the “unregistered” folder.

  If there is still unregistered content data with additional information (step S316: YES), the above-described steps S304 and after are repeated. That is, the next unregistered content data with supplementary information is selected, the supplementary information is acquired and registered in the supplementary information list TB30, and the process of registration in the reproduction song list TB20 is repeated. In this process, as shown in FIG. 16, information for specifying the next content data with additional information is registered in the reproduction song list TB20. This process is repeated until there is no unregistered content data with additional information.

  That is, when it is determined in step S316 that there is no unregistered content data with accompanying information (step S316: NO), this accompanying information list creation process is terminated. At the time when the incidental information list creation process is completed, a reproduction music list TB20 in which information for specifying all content data with incidental information is registered has been created.

  The reproduction process is basically the same as in the first embodiment described above. However, in the present embodiment, since the file to be played is stored in the “registered” folder, the playback device 120 reads content data with supplementary information necessary for playback from the “registered” folder. To perform the playback process.

  FIG. 17 is a diagram illustrating a flowchart for explaining the arbitration process executed by the playback device 120 according to the present embodiment. This arbitration process is a process for preventing the reproduction music list TB20 from causing logical inconsistency by simultaneously accessing the reproduction music list TB20 during the reproduction process and the incidental information list creation process.

  The arbitration process shown in FIG. 17 is a process realized by the CPU 150 reading and executing the arbitration program stored in the ROM 154 or the hard disk drive 156. In the present embodiment, the arbitration process is started simultaneously with the incidental information list creation process shown in FIG. 14, and is executed in parallel with the incidental information list creation process. When the incidental information list creation process ends, This is the process that ends with this.

  As shown in FIG. 17, when the arbitration process is started, it is first determined from the incidental information list creation process whether or not there is a request for access to the reproduction song list TB20 (step S320). That is, the process of step S310 in FIG. 14 is executed, and it is determined whether or not there is an access request for registering the selected content data file with supplementary information in the reproduction music list TB20.

  If there is an access request to the reproduction music list TB20 from the incidental information list creation processing (step S320: YES), it is determined whether or not the reproduction processing has accessed the reproduction music list TB20 (step S322). When the reproduction process accesses the reproduction music list TB20 (step S322: NO), the process of step S322 is repeated and waits.

  On the other hand, when the playback process has not accessed the playback song list TB20 (step S322: YES), the playback device 120 allows access to the playback song list TB20 in the incidental information list creation process (step S324). Specifically, in the process of step S310 in FIG. 14, the selected content data file with supplementary information is allowed to be registered in the reproduction song list TB20, whereby the reproduction data list TB20 by the supplementary information list creation process is registered. Registration is made. After the process of step S324, the process returns to the process of step S320 described above.

  On the other hand, when it is determined in step S320 described above that there is no request to access the playback song list TB20 from the incidental information list creation process (step S320: NO), the playback device 120 starts the playback song from the playback process. It is determined whether or not there is a request to access the list TB20 (step S326). The process of step S120 in FIG. 7 is executed, and it is determined whether or not a request to access the reproduction song list TB20 has been made in order to select one song to be reproduced.

  If there is no request to access the playback song list TB20 from the playback process (step S326: NO), the process returns to the above-described step S320.

  On the other hand, if there is a request for access to the reproduction music list TB20 from the reproduction processing (step S326: YES), it is determined whether or not the incidental information list creation processing has accessed the reproduction music list TB20 (step S328). . When the incidental information list creation process accesses the reproduction music list TB20 (step S328: NO), the process of step S328 is repeated and waits.

  On the other hand, when the incidental information list creation processing has not accessed the reproduction song list TB20 (step S328: YES), the reproduction device 120 allows access to the reproduction song list TB20 for reproduction processing (step S330). Specifically, in the process of step S120 in FIG. 7, it is permitted to access the reproduction song list TB20 and search for a file registered in the reproduction song list TB20. A song is selected. After the process of step S330, the process returns to the process of step S320 described above.

  As described above, the playback device 120 according to the present embodiment also starts playback even if the content data with supplementary information newly transferred from the center device 110 to the playback device 120 is not registered in the supplementary information list TB30. Will be able to. For this reason, a user's convenience can be improved and irritation can be reduced.

  In addition, in the playback process, only the content data with attached supplementary information is generated, so the playback process activated in the supplementary information list creation process is executed when there is no unregistered content data with supplementary information. The same process as the normal playback process can be performed.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, the internal configurations of the center device 110 and the playback device 120 illustrated in FIG. 1 are merely examples, and may be internal configurations other than those illustrated in FIG.

  The hard disk drives 136 and 156 in the above embodiment are an example of storage means for storing content data files with supplementary information, and the storage means can be configured by a storage device other than the hard disk drive. .

  Various information may be assumed as the information included in the supplementary information described above, and may include image information such as a thumbnail image as well as the character information such as the artist name and the song title described above. .

  In the above-described embodiment, the file name and the file path are used as the file specifying information for specifying the file in the registration target list TB10, the reproduction song list TB20, and the incidental information list TB30. It is not limited to file names and file paths. That is, various information can be used as file specifying information depending on the characteristics of the file system and the processing method. For example, a file pointer, directory entry information, a B-tree name, or the like can be used.

  When directory entry information is used, the directory entry information is defined by a sector number and the number of bytes in the sector. Therefore, the directory entry information directly determines the storage location of the file in accordance with the FAT specification. There is a merit that can be. That is, when a file is specified by a file name or file path, directory entry information is finally obtained from the file name or file path. This operation is performed by using directory entry information as file specifying information. The file access can be speeded up.

  For each process described in the above-described embodiment, a program for executing each process is recorded on a recording medium such as a flexible disk, a CD-ROM (Compact Disc-Read Only Memory), a ROM, or a memory card. Thus, it can be distributed in the form of a recording medium. In this case, the above-described embodiment can be realized by causing the playback device 120 to read and execute the program recorded on the recording medium.

  In addition, the playback device 120 may include other programs such as an operating system and another application program. In this case, in order to utilize other programs included in the playback device 120, a program including an instruction for calling a program that realizes the same processing as that of the above-described embodiment from among the programs included in the playback device 120, You may make it record on a recording medium.

  Furthermore, such a program can be distributed not as a recording medium but as a carrier wave through a network. The program transmitted in the form of a carrier wave on the network is taken into the playback device 120, and the above-described embodiment can be realized by executing this program.

  Also, when a program is recorded on a recording medium or transmitted as a carrier wave on a network, the program may be encrypted or compressed. In this case, the playback device 120 that has read the program from the recording medium or the carrier wave needs to execute the program after decoding or decompressing the program.

  Furthermore, in the above-described embodiment, various processes are implemented by software programs. However, these processes may be implemented by hardware such as an ASIC (Application Specific IC).

The figure for demonstrating the structure of the content data transfer system which concerns on 1st Embodiment thru | or 3rd Embodiment. The figure which shows an example of a data structure of the content data with supplementary information transferred with the content data transfer system of FIG. The figure which shows the flowchart explaining the content of the reproduction | regeneration starting process which concerns on 1st Embodiment. The figure which shows an example of the folder structure of the hard disk drive of the reproducing | regenerating apparatus after content data with incidental information transfer. The figure which shows an example of a structure of the registration object list | wrist produced with the reproducing | regenerating apparatus of FIG. The figure which shows an example of the reproduction | regeneration music list produced with the reproduction | regeneration apparatus of FIG. The figure which shows the flowchart explaining the content of the reproduction | regeneration processing which concerns on 1st Embodiment. The figure which shows the flowchart explaining the content of the incidental information list creation process which concerns on 1st Embodiment. The figure which shows an example of a structure of the incidental information list produced with the reproducing | regenerating apparatus of FIG. The figure which shows an example of the folder structure of the hard disk drive of the reproduction | regeneration apparatus after registering the transferred content data with supplementary information to a supplementary information list. The figure which shows the flowchart explaining the content of the reproduction | regeneration starting process which concerns on 2nd Embodiment. The figure which shows an example of the reproduction | regeneration file selection screen displayed on the display of the reproduction | regeneration apparatus which concerns on 2nd Embodiment. The figure which shows an example of a structure of the reproduction | regeneration music list produced with the reproduction | regeneration apparatus which concerns on 2nd Embodiment. The figure which shows the flowchart explaining the content of the incidental information list creation process which concerns on 3rd Embodiment. The figure which shows an example of the structure of the reproduction | regeneration music list produced with the reproducing | regenerating apparatus which concerns on 3rd Embodiment (state in which the 1st music was registered). The figure which shows an example of a structure of the reproduction | regeneration music list produced with the reproducing | regenerating apparatus which concerns on 3rd Embodiment (The state which registered the 2nd music). The figure which shows the flowchart explaining the content of the arbitration process which concerns on 3rd Embodiment.

Explanation of symbols

100 content data transfer system 110 center device 120 playback device 130 CPU
132 RAM
134 ROM
136 Hard Disk Drive 138 Communication Interface 150 CPU
152 RAM
154 ROM
156 Hard disk drive 158 Communication interface 160 Display 170 USB cable

Claims (15)

Acquisition means for acquiring content data with additional information including content data and incidental information which is information incidental to the content data;
First storage means for storing the content data with supplementary information acquired by the acquisition means as a file;
Reproduction song list creation means for obtaining file identification information for identifying a file of content data with supplementary information from the first storage means, and creating a reproduction song list based on the file identification information;
Based on the reproduction song list created by the reproduction song list creation means, the file identification information of the content data with supplementary information to be reproduced is acquired, and the content with supplementary information of the file specified by the acquired file identification information Playback means for playing back data;
Analyzing the content data with supplementary information stored in the first storage means while the reproduction means is reproducing, obtaining the supplementary information, and registering the obtained supplementary information To create an incidental information list, an incidental information list creation means,
A playback device comprising:   The reproduction song list creating means acquires file identification information of all content data files with additional information stored in the first storage means, and registers the file identification information in the reproduction song list. The playback device according to claim 1.   The playback apparatus according to claim 2, further comprising a selection unit that allows a user to select a file of content data with auxiliary information to be registered at least at the beginning of the playback song list. Second storage means for storing the content data with supplementary information registered in the supplementary information list;
Copy means for copying the content data with supplementary information registered in the supplementary information list from the first storage means to the second storage means;
A deletion means for deleting the content data with supplementary information stored in the first storage means after the reproduction based on the reproduction song list by the reproduction means is completed;
Further comprising
4. The playback device according to claim 1, wherein the playback unit acquires the content data with the accompanying information from the first storage unit. A registration target list creating means for acquiring all file specifying information of a file of content data with additional information that is not registered in the incidental information list, and creating a registration target list based on the acquired file specifying information, In addition,
The supplementary information list creating means acquires file specifying information of content data with supplementary information to be registered in the supplementary information list based on the registration target list, and stores the file specified by the acquired file specifying information. The reproduction apparatus according to any one of claims 1 to 4, wherein incidental information of content data with incidental information is registered in an incidental information list. Acquisition means for acquiring content data with additional information including content data and incidental information which is information incidental to the content data;
First storage means for storing the content data with supplementary information acquired by the acquisition means as a file;
Select one of the content data with supplementary information stored in the first storage means, analyze the selected content data with supplementary information, obtain the supplementary information, and obtain this An incidental information list creating means for creating an incidental information list by registering incidental information; and
Registering information for specifying the selected content data with accompanying information, and creating a reproduction song list, a reproduction song list creating means,
Based on the reproduction song list created by the reproduction song list creation unit, the content data with supplementary information to be reproduced is obtained, and the obtained content data with supplementary information is reproduced;
A playback device comprising:   While the reproduction means is reproducing, the content data with supplementary information that is not registered in the supplementary information list is analyzed, the supplementary information is additionally registered in the supplementary information list, and the supplementary information is also registered. 7. The playback apparatus according to claim 6, further comprising additional registration means for additionally registering information specifying content data with supplementary information registered in the list in the playback song list.   8. The playback apparatus according to claim 7, further comprising mediation means for performing mediation so that the playback means and the additional registration means do not access the playback song list at the same time. Second storage means for storing the content data with supplementary information registered in the supplementary information list;
Moving means for moving the content data with auxiliary information registered in the auxiliary information list from the first storage means to the second storage means;
Further comprising
9. The playback device according to claim 6, wherein the playback unit acquires the content data with supplementary information from the second storage unit. Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with supplementary information as a file in a storage means;
Acquiring file specifying information for specifying a file of content data with supplementary information from the storage means, and creating a reproduction song list based on the file specifying information;
Acquiring file specifying information of content data with supplementary information to be reproduced based on the reproduction song list, and reproducing the content data with supplementary information of the file specified by the acquired file specifying information;
While performing the reproduction, the content data with supplementary information stored in the storage means is analyzed, the supplementary information is obtained, and the supplementary information is registered to obtain the supplementary information list. The steps of creating
A control method for a playback device, comprising: Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
One of the content data with supplementary information stored in the storage means is selected, the selected content data with supplementary information is analyzed, the supplementary information is acquired, and the acquired supplementary information is acquired. Creating an incidental information list by registering,
Registering information for identifying the selected content data with accompanying information and creating a reproduction song list;
Acquiring content data with additional information to be reproduced based on the created reproduction song list, and reproducing the acquired content data with additional information;
A control method for a playback device, comprising: Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
Acquiring file specifying information for specifying a file of content data with supplementary information from the storage means, and creating a reproduction song list based on the file specifying information;
Acquiring file specifying information of content data with supplementary information to be reproduced based on the reproduction song list, and reproducing the content data with supplementary information of the file specified by the acquired file specifying information;
While performing the reproduction, the content data with supplementary information stored in the storage means is analyzed, the supplementary information is obtained, and the supplementary information is registered to obtain the supplementary information list. The steps of creating
For playing on a playback device. Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
One of the content data with supplementary information stored in the storage means is selected, the selected content data with supplementary information is analyzed, the supplementary information is acquired, and the acquired supplementary information is acquired. Creating an incidental information list by registering,
Registering information for identifying the selected content data with accompanying information and creating a reproduction song list;
Acquiring content data with additional information to be reproduced based on the created reproduction song list, and reproducing the acquired content data with additional information;
For playing on a playback device. Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
Acquiring file specifying information for specifying a file of content data with supplementary information from the storage means, and creating a reproduction song list based on the file specifying information;
Acquiring file specifying information of content data with supplementary information to be reproduced based on the reproduction song list, and reproducing the content data with supplementary information of the file specified by the acquired file specifying information;
While performing the reproduction, the content data with supplementary information stored in the storage means is analyzed, the supplementary information is obtained, and the supplementary information is registered to obtain the supplementary information list. The steps of creating
A recording medium on which a program for causing a playback device to execute is recorded. Acquiring content data with additional information including content data and additional information which is information incidental to the content data;
Storing the acquired content data with accompanying information as a file in a storage means;
One of the content data with supplementary information stored in the storage means is selected, the selected content data with supplementary information is analyzed, the supplementary information is acquired, and the acquired supplementary information is acquired. Creating an incidental information list by registering,
Registering information for identifying the selected content data with accompanying information and creating a reproduction song list;
Acquiring content data with additional information to be reproduced based on the created reproduction song list, and reproducing the acquired content data with additional information;
A recording medium on which a program for causing a playback device to execute is recorded.

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