JP5192034B2 - Content playback apparatus and program - Google Patents

Description

  The present invention relates to a content reproduction apparatus that reads out and reproduces content data such as music from a recording medium, and a program that causes a computer to function as the apparatus.

  As a conventional content reproduction apparatus, for example, there is an automatic performance apparatus disclosed in Patent Document 1. In this apparatus, the data holding structure of the storage means is a directory structure, and a plurality of song data representing songs and song order data representing the order of reproduction of the plurality of song data are stored in one directory. Play music data in the order specified by the data.

  Patent Document 2 discloses a music playback device that simplifies the process of registering song order data. The playlist data that defines the playback order of song data handled by this apparatus is composed of item data corresponding to each song data, and the item data is composed of number data, check mark data, and the like. The song data is played in the playback order defined by the number data of the item data, and the user can specify whether or not the song data can be played by simply specifying the check mark data presented via the display unit. .

JP 2001-109470 A JP 2006-196058 A

  Conventional devices handle music data recorded on different types of recording media, such as CD (Compact Disc), USB (Universal Serial Bus), and hard disk devices, without regard to the type of recording media. There was a problem that the playback order could not be set arbitrarily.

  For example, Patent Document 1 reproduces music data stored in one directory in an order defined by music order data, and does not consider music data recorded on recording media of different types. Also in Patent Document 2, it is not possible to perform unified control of the reproduction order of music data recorded on different types of recording media.

  The present invention has been made in order to solve the above-described problems, and by handling a plurality of types of recording media in a unified manner, the reproduction order of content data such as music without being conscious of the type of recording media It is an object of the present invention to obtain a content reproducing apparatus capable of controlling the above and a program for causing a computer to function as this apparatus.

The content reproduction apparatus according to the present invention extracts the additional information from a plurality of types of recording media on which content data and additional information for specifying the content are recorded, and records the additional information and the content data for each content. Database generation means for generating a content database in which path information indicating a location is registered; access time detection means for detecting access time to content data recorded on the recording medium; and additional information extracted from the content database In order to determine the playback order in the order list listed in the playback order, when the plurality of additional information is set to a plurality of contents that are not the same content in the same playback order, the access time detecting means detects Access for each recorded recording medium Depending on the time, order generation priority means for giving a priority level of the reproduction order to the additional information, and rearrangement of the reproduction order of the order list, and for the additional information of the same reproduction order, the priority Order generation means for determining the playback order based on the level, and content playback means for playing back the content data recorded on the recording medium based on the path information acquired from the content database in the playback order of the order list. Is.

According to the present invention, when a plurality of additional information is set in the content of the same playback order in the order list, the priority level of the playback order is given to the additional information according to the access time for each recording medium, When performing rearrangement of the order of playback in the order list, the content recorded on the recording medium in the order of playback of the order list is determined based on the priority level for the additional information of the content having the same playback order. Play the data. By doing so, there is an effect that a plurality of types of recording media can be handled in a unified manner, and the playback order of content data such as music can be controlled without being conscious of the type of recording media.

It is a block diagram which shows the structure of the content reproduction apparatus by Embodiment 1 of this invention. It is a figure which shows the structural example of the music database in FIG. It is a figure which shows the structural example of a track table. It is a figure which shows the structural example of a track name table. It is a figure which shows the structural example of an artist name table. It is a figure which shows the structural example of a playlist name table. It is a figure which shows the structural example of a folder table. It is a figure which shows the hierarchical relationship of a folder. It is a figure which shows the structural example of an order list production | generation track table. It is a figure which shows the structural example of a playlist table. It is a figure which shows the structural example of an order list production | generation playlist table. It is a figure which shows the structural example of an order list. It is a block diagram which shows the internal structure of the order list control means in FIG. 1, and its periphery structure. 5 is a flowchart showing a flow of setting processing of reproduction order in the order list according to the first embodiment. It is a figure which shows the selection screen of the reproduction | regeneration order of an order list. It is a figure which shows an example of the selection screen of the reproduction | regeneration order of an order list. It is a figure which shows the other example of the selection screen of the reproduction | regeneration order of an order list.

Hereinafter, in order to describe the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a content reproduction apparatus according to Embodiment 1 of the present invention, and shows a case where the present invention is applied to a music reproduction apparatus that reproduces music as content. 1, the content playback apparatus according to the first embodiment includes an order list control unit 1, a music database 2, a music database generation unit 4, a media access time detection unit 6, a track playback unit 7, and an HMI unit 8.

  The order list control means 1 searches and extracts the additional information of the music data from the music database 2 based on the contents of each table 2a, and generates the order list 3 in which the additional information of the extracted music data is listed. The reproduction order of the song data is controlled by the order control of the list items in the order list 3.

  In the present invention, music and video such as audio data, video data, karaoke data, ringtone melody data, podcast data, and mixed data including music data (for example, MP3 music data) are reproduced and recorded. Content data is called content. Further, the list data representing the reproduction order and the recording order of the contents like the music order data is referred to as an order list 3.

  The music database (content database) 2 is a database composed of a table 2 a in which additional information of music data recorded on various types of recording media 5 is registered. Search extraction is possible. The table 2a is table data in which additional information recorded on the recording medium 5 along with the song data is registered as attribute information of the song data.

  As the additional information of the song data, information described in the song information tag incorporated in the song data file can be considered. In the case of MP3 (MPEG audio layer 3) data, there is information such as “artist, creation year, song name” described in an ID3 tag (ID3v1 tag, ID3v1.1 tag, ID3V2 tag, etc.).

  Specifically, the track (song data) genre (Genre), the track name (Track Title), the track name reading (Rubi) (Track Title YOMI), the artist name (Artist Name), the artist name Reading (Artist YOMI), album (playlist) name (Playlist Name), playlist name reading (Playlist YOMI), track number (Tracks) in the album that contains the track, date the album was published Information such as (Album Year) and album genre (Album Genre) is read out.

  The music database generation means (database generation means) 4 registers the additional information of the music data read from each recording medium 5 in the table 2a in association with the track path indicating the storage location of the music data (track). Thus, the music database 2 is generated. As item information registered in the music database 2, for example, a track ID (Track ID) which is index information to each table constituting the table 2a relating to the track, a track path (Track Path) indicating a track storage location, and a directory structure Folder number (Folder No) for specifying a folder corresponding to each track, and a folder depth (Folder Depth) indicating the depth of the directory hierarchy from the root folder.

  Examples of the recording medium 5 include a music medium A in which song data is recorded on a hard disk device (HDD), a music medium B in which song data is recorded in a USB memory, and a music medium C in which song data is recorded on a CD or DVD. Here, the recording medium 5 includes drive devices and interfaces for the music media A to C.

  The media access time detection means (access time detection means) 6 detects an access time required to access the music data recorded on the music media A to C via the drive device and interface of the recording medium 5. For example, the access time for music data recorded on the music medium C depends on the pickup (head) of a CD or DVD disk drive device and the position on the disk where the music data (music file) exists. It also depends on the folder depth of the folder where the song data exists. As the access time, a media average access time, a minimum access time, and a maximum access time in a predetermined access can be considered.

  The track reproduction means (content reproduction means) 7 specifies music data of music media defined by the track path in accordance with the reproduction order of the tracks (songs) set in the order list 3, and reproduces each track. The HMI means 8 is a human machine interface (HMI) for exchanging information between the content reproduction apparatus and the user using an input device and a display device (not shown). For example, under the control of the order list control means 1 or the track playback means 7, the registration information of the music database 2, the information of the order list 3 and the information of the track (song data) being played are displayed on the display screen of the display device. To do. Further, by providing a voice recognition device as the HMI means 8, information may be input by voice uttered by the user.

  The above-described order list control means 1, music database generation means 4, media access time detection means 6, track reproduction means 7 and HMI means 8 cause a computer to read a program for constructing a content reproduction apparatus according to the gist of the present invention, for example. By controlling the operation, it can be realized as a specific means in which software and hardware cooperate on this computer.

  The music database 2 and the order list 3 may be constructed on a storage area of a storage device (HDD) mounted on the computer. From the order list control means 1, the music database generation means 4, and the track playback means 7. It may be constructed on a storage area of an external device capable of data communication.

  FIG. 2 is a diagram illustrating a configuration example of the music database in FIG. When creating a database in units of tracks, the music database 2 includes a track table 2a-1, a track name table 2a-2, an artist name table 2a-3, a playlist name table 2a-4, a folder, as shown in the upper part of FIG. Table 2a-5, and these tables 2a-1 to 2a-5 are composed of an order list generation track table 2a-6 associated with a lower hierarchy. The tables 2a-1 to 2a-5 are three IDs of track ID (Track ID), artist name ID (Artist Name ID), and playlist ID (Playlist ID) managed by the order list generation track table 2a-6. Associated.

  The track table 2a-1 manages additional information other than the track name (song name). In this table, a track ID (Track ID) which is index information to each table constituting the music database 2, a track path (Track Path) indicating a storage location of the track, and a track in an album in which the track (song) is recorded A number (Tracks) and a track genre (Genre) are registered.

  The track name table 2a-2 manages additional information of track names (song names). In this table, a track name ID (Track Title ID) that becomes index information to each table constituting the music database 2 by being associated with the track ID, a track name (Track Title) specified by the track name ID, and a track The name of the name (Rubi) (Track Title YOMI) is registered.

  The artist name table 2a-3 manages additional information of artist names. In this table, an artist name ID (Artist Name ID) which is ID information for specifying an artist name in the music database 2, an artist name (Artist Name) specified by the artist name ID, and an artist name reading (ruby) (Artist YOMI) is registered.

  The playlist name table 2a-4 manages additional information of playlist (album) names. This table includes a playlist name ID (Playlist Name ID) which is ID information for specifying a playlist name in the music database 2, a playlist name (Playlist Name) specified by the playlist name ID, and a playlist name. Reading (ruby) (Playlist YOMI) is registered.

  The folder table 2a-5 manages additional information related to the folder corresponding to the playlist. The table 2a-5 includes a folder number (Folder No) for specifying a folder corresponding to the playlist, and a root folder (0 hierarchy (depth = 0)) of folders managed hierarchically in the directory structure. The folder depth (Folder Depth) indicating the depth (hierarchy depth) is registered.

  The order list generation track table 2a-6 is table data for managing tracks (songs) and generating an order list for each track. In this table, a track ID, an artist name ID, and a playlist ID are registered. The track table 2a-1 and the track name table 2a-2 are associated with track IDs managed by the order list generation track table 2a-6.

  The artist name table 2a-3 is associated with the artist name ID managed by the order list generation track table 2a-6. The playlist name table 2a-4 and the folder table 2a-5 are associated with a playlist ID managed by the order list generation track table 2a-6.

  The tables 2a-1 to 2a-5 in which the additional information of the song data is classified in this way are associated with the three ID information registered in the order list generation track table 2a-6. Thereby, based on the information item of each table 2a-1 to 2a-5, it is possible to search for information to be searched and specify the information. Even if there is a change in the additional information of the song data, it is possible to cope with the change of the additional information by specifying the corresponding table in order from the ID information of the order list generation track table 2a-6.

  Further, when creating a database in units of albums (playlists), the music database 2 includes an artist name table 2a-3, a playlist name table 2a-4, a folder table 2a-5, a playlist, as shown in the lower part of FIG. Table 2a-7, and these tables 2a-3 to 2a-5 and 2a-7 are composed of an order list generation playlist table 2a-8 associated with a lower hierarchy. The tables 2a-3 to 2a-5 and 2a-7 are associated with two IDs, that is, a playlist ID and an artist name ID managed by the order list generation playlist table 2a-8.

  The playlist table 2a-7 manages additional information other than the name of the playlist (album). This table includes a playlist ID (Playlist ID) which is ID information for specifying a playlist in the music database 2, a year (Album Year) when the album (playlist) was issued, and an album genre (Album Genre). Is registered.

  The order list generation playlist table 2a-8 is table data for managing a playlist (album) and generating an order list for each playlist. In this table, a playlist ID and an artist name ID are registered.

  The playlist table 2a-7, the playlist name table 2a-4, and the folder table 2a-5 are associated with a playlist ID managed by the order list generation playlist table 2a-8. The artist name table 2a-3 is associated with the artist name ID managed by the order list generation playlist table 2a-8.

  Each table 2a-3 to 2a-5 and 2a-7 in which the additional information of the song data is classified is associated with two pieces of ID information registered in the order list generation playlist table 2a-8. Thereby, search of information to be searched and identification thereof can be executed from the additional information of the song data by the information items of the tables 2a-3 to 2a-5 and 2a-7. Further, even if there is a change in the additional information of the song data, it is possible to cope with the change of the additional information by specifying the corresponding table in order from the ID information of the order list generation playlist table 2a-8.

Next, the operation will be described.
(1) Music Database Generation Processing First, the HMI means 8 is used to select a folder associated with music data recorded on the HDD (music media A), and a USB memory (music media B) is connected to the USB connector. Alternatively, a CD or DVD (music media C) is loaded into the disk drive device, and the music media A to C are made accessible by the music database generation means 4.

  When the music media A to C are set in an accessible state, the music database generation means 4 has a music information tag (such as an ID3 tag of MP3 data) incorporated in a music data file recorded in the music media A to C. ) Is extracted and the description information is searched, and the additional information described in the music information tag is read out. The music database generation means 4 extracts information such as a track path, a folder number, and a folder depth from the library information of the music data from which the music information tag is read.

  When the music media A to C are set in an accessible state, the music database generation means 4 displays a selection screen listing the song names specified by the music information tags read from the music media A to C. The songs displayed on the display screen and selected by the user using the input device may be selected.

  Next, the music database generating means 4 generates the music database 2 by classifying and registering the information read out as described above into the information items of the table 2a. Referring to the music database 2 shown in FIG. 2, among the information read from the music information tag, the information regarding the track (song) is classified into the tables 2 a-1 and 2 a-2 associated by the track ID, Information related to the artist name is classified in the table 2a-3 associated with the artist name ID, and information related to the playlist is classified and registered in the tables 2a-4 and 2a-5 associated with the playlist ID.

  Here, as indicated by an arrow in FIG. 2, the track table 2a-1 is associated with the track ID of the track table 2a-1 and the track ID of the order list generation track table 2a-6. It is associated with a track title ID in the table 2a-2. In the order list generation track table 2a-6, since the track ID and the playlist ID are associated with each other, as shown in FIG. 3, in the track table 2a-1, the track ID, the track name ID, and the artist name ID , Playlist ID, track number (Tracks), genre, and track path are associated with each other.

  From this table 2a-1, it can be seen that the information corresponding to, for example, track ID = 4 is track name ID = 3, track number = 2, genre = 1, track path = ¥ system_0 ¥ folder_2 ¥ Track_2. The track table 2a-1 has attribute information of the track (song) and information on the track position (storage location).

  The track name table 2a-2 constitutes table data in which track name ID, track name, and track reading are registered as shown in FIG. In addition, the character information which comprises a table is expressed using UTF-8 which is a Unicode character encoding system, for example.

  From this table 2a-2, for example, it is understood that the information corresponding to the track name ID = 3 is track name = “mountain” and track reading = “yama”. In the track name table 2a-2, the track names are uniquely registered without duplication. However, even if the tracks are different, the same name is not distinguished. For this reason, the same ID is registered as the track name ID.

  Similarly, the artist name table 2a-3 constitutes table data in which artist name ID, artist name (album artist or track artist), and artist reading are registered as shown in FIG. For example, it can be seen that the information corresponding to the artist name ID = 1 is artist name = “AAA” and artist name reading = “aaa”. In this table 2a-3, artist names are uniquely registered without duplication. However, even if they are different artists, there is no distinction between the same name and the same name. Therefore, the artist name ID is registered with the same ID.

  Further, the playlist name table 2a-4 constitutes table data in which playlist name ID, playlist name, and playlist reading are registered as shown in FIG. Here, it is understood that the information corresponding to the playlist ID = 3 is the playlist name = “Namiki Michi” and the playlist reading = “Namikimichi”. In this table 2a-4, playlist names are registered uniquely without duplication. However, even if the playlists are different, there is no distinction between the same names. For this reason, the playlist name ID is registered with the same ID.

  Further, as indicated by arrows in FIG. 2, the playlist name ID of the playlist name table 2a-4 and the folder number of the folder table 2a-5 are associated with the playlist ID of the order list generation track table 2a-6. Thus, the folder table 2a-5 is associated with the playlist name ID in the playlist name table 2a-4. As a result, as shown in FIG. 7, the folder table 2a-5 associates the folder number, the playlist ID, and the folder depth.

  FIG. 8 is a diagram showing the hierarchical relationship of folders associated with song data. A folder table 2a-5 shown in FIG. 7 is obtained by structuring the relationship shown in FIG. 8 as a table. In the folder table 2a-5, it can be seen that the information corresponding to the folder number = 2 is the playlist ID = 1 and the folder depth = 2. In this way, by referring to the registered contents of the folder table 2a-5, the hierarchical relationship between folders, the position of the folder, whether the folder includes a track (song), that is, whether or not it corresponds as a playlist, etc. Judgment can be made.

  When the music database generating unit 4 generates the tables 2a-1 to 2a-5 as described above, the music database generating unit 4 associates the track ID, artist name ID, and playlist ID with each other, and uses the ID information as the order list generating track table 2a. Register in -6. Thereby, in the music database 2, each table 2a-1 to 2a-6 is associated with the above three ID information.

  By referring to the order list generation track table 2a-6, it is understood that the information corresponding to the track ID = 3 is artist name ID = 1 and play list ID = 2 as shown in FIG. Further, by referring to the track table 2a-1 and the order list generation track table 2a-6 shown in FIG. 3, the information corresponding to the track name = 1 through the track ID is track number = 1, genre = 1, track It can be seen that the path = \ system_0 \ folder_2 \ Track_1.

  Further, by referring to the artist name table 2a-3 and the order list generation track table 2a-6 shown in FIG. 5, it is possible to recognize artist name = “AAA” and artist reading = “aaa” through the artist name ID. it can. Further, by referring to the playlist name table 2a-4 and the order list generation track table 2a-6 shown in FIG. 6, information corresponding to the playlist name ID = 2 is obtained through the playlist ID. It can be seen that “to loved ones” and “playlist name reading” = “to loved ones”.

  On the other hand, when creating a database in units of albums (playlists), the music database generation unit 4 includes information related to the playlist among the information read from the music information tag, in the table 2a-7 associated with the playlist ID. , 2a-4, 2a-5, and information related to the artist name is classified and registered in the table 2a-3 associated with the artist name ID.

  Here, as shown by arrows in FIG. 2, the playlist table 2a-7 is associated with the playlist ID of the playlist table 2a-7 and the playlist ID of the order list generation playlist table 2a-8. 7 is associated with a playlist name ID (Playlist Name ID) in the playlist name table 2a-4. Further, in the order list generation playlist table 2a-8, the playlist ID and the artist name ID are associated with each other. Therefore, in the playlist table 2a-7, as shown in FIG. , Artist name ID, album publication year, and album genre are associated with each other.

  In the example of FIG. 10, according to the playlist table 2a-7, information corresponding to the playlist ID = 2 is playlist name ID = 2, artist name ID = 2, album issue year = 2004, and album genre = 1. I understand that. Thus, in the playlist table 2a-7, attribute information of the playlist is registered.

  When the music database generating unit 4 generates the tables 2a-3 to 2a-5 and 2a-7 as described above, the music database generating unit 4 associates the playlists with the playlist IDs and the artist name IDs, and uses the ID information as the order list generation playlist. Register in Table 2a-8. Thereby, in the music database 2, each table 2a-3-2a-5, 2a-7 is linked | related by said two ID information.

  By referring to the order list generation playlist table 2a-8, it is understood that playlist ID = 4 corresponds to artist name ID = 2 as shown in FIG. Further, by referring to the playlist table 2a-7 and the order list generation playlist table 2a-8 shown in FIG. 10, the information corresponding to the playlist name ID = 4 through the playlist ID is the album publication year = 2005. It can be seen that the album genre = 1.

  Furthermore, by referring to the artist name table 2a-3 and the order list generation playlist table 2a-8 shown in FIG. 5, the artist reading corresponding to artist name = “BBB” is “bbb” through the artist name ID. I can recognize that. Further, by referring to the playlist name table 2a-4 and the order list generation playlist table 2a-8 shown in FIG. 6, the playlist name reading corresponding to the playlist name = “universe” is read through the playlist ID. You can see that it is “Uchu”.

  As described above, in the music database 2, the additional information of the music data recorded on the various recording media 5 is associated with each other using the three ID information of the track ID, artist name ID, and playlist ID. It is classified and registered in various tables. Thereby, the additional information of the music data recorded on the various recording media 5 is managed in a unified manner without depending on the type of the recording media 5 in the music database 2.

  Further, in the music database 2, when the information to be searched is specified, searched, and registered in the order list 3, by referring to the items in the various tables constituting the table 2a, the correspondence between the information is followed. The above processes can be easily executed without being conscious of the type of the recording medium 5. Even if there is a change in the additional information of the song data, it is only necessary to change the related information in the table.

(2) Order List Generation Processing The order list control means 1 generates the order list 3 by combining the tables 2a-1 to 2a-5 and 2a-7 shown in FIGS. The order list 3 has a list structure as shown in FIG. 12, and is a set of information related to tracks and playlists corresponding to music data to be reproduced. In the example shown in FIG. 12, the track ID is an index to the various tables 2a-1 to 2a-5 in which information about the track (song) is registered, and the information about the playlist (album) is registered as the playlist ID. It is an index to the various tables 2a-3 to 2a-5 and 2a-7.

(3) Order List Playback Order Setting Processing FIG. 13 is a block diagram showing the internal configuration of the order list control means in FIG. 1 and its peripheral configuration, and the order list among the components of the order list control means 1 3 is a component extracted for setting the track reproduction order. In FIG. 13, the order list control means 1 includes an order list order generation priority means 9 and an order list order generation means 10 as components for setting the track reproduction order of the order list 3.

  The order list order generation priority means (order generation priority means) 9 determines the access time for each recording medium 5 input from the medium access time detection means 6 when determining the playback order for each track (song) in the order list 3. Considering this, the priority level of the playback order for each track is determined. The order list order generation means (order generation means) 10 inquires the music database 2 about the registered contents of the order list 3, and determines the playback order in ascending or descending order according to the attribute items of the music data.

Next, the details of the reproduction order setting process in the order list will be described.
As pre-processing for setting the reproduction order, the media access time detection means 6 detects the access time for each recording medium 5 when the music database generation means 4 accesses the various recording media 5 to generate the music database 2.

  Note that the media access time detection means 6 may detect the access time during the order list reproduction order setting process by the order list control means 1 instead of as pre-processing. The access time for each recording medium 5 detected in this way is output from the media access time detection means 6 to the order list order generation priority means 9.

FIG. 14 is a flowchart showing the flow of the process for setting the playback order in the order list according to the first embodiment. The details of the process for setting the playback order by the components in FIG. 13 will be described with reference to FIG.
First, when the order list 3 is input, the order list order generation means 10 searches the music database 2 with information on items registered in the order list 3 and sets the playback order of the list items in ascending order according to the items in the music database 2. Arrange in descending order (step ST1a).

  In step ST1a, the order list order generation means 10 displays a track playback order selection screen of the order list 3 as shown in FIG. 15 on the display screen of the display device, and the user desires using an input device (not shown). It is also possible to select and specify the order. In FIG. 15, “Song Title”, “Artist Name”, “Genre”, “Album Name”, and “Release Date” are displayed as the attribute information of the order list 3, and the playback order of the tracks is determined based on these information. Selectable in ascending or descending order. In this selection screen, the playback order may be set by selecting each attribute information of “Song Title”, “Artist Name”, “Genre”, “Album Name”, and “Release Date” independently. Some of them may be handled in combination to set the playback order.

The process of setting the playback order as specified by the user will be described in detail with reference to FIG.
In FIG. 15, the ascending order of the release time is selected by clicking the item column of “release time” and selecting “upwardly convex black triangle symbol”. Thereafter, the descending order of the song title is selected by clicking the item column of “Song Title” and selecting “Symbol of black triangle protruding downward”. Here, the original reproduction order of the order list 3 may be restored by clicking the triangle symbol again on the selection screen and setting it to “no mark”.

In FIG. 15, the order determination in ascending order by release time> descending order by song name affects the release time and song name in the order list 3. This is expressed in the database language as follows.
SELECT *
FROM OrderList
ORDER BY AlbumYear ASC, TrackTitleName DESC

  Also, a priority level for determining the playback order may be set for each item of the attribute information and displayed on the selection screen. Specifically, the user designates a priority level for giving priority to the reproduction order for each item via the HMI means 8. The order list order generation means 10 displays the priority level for each item designated by the user on the selection screen.

  The priority level is displayed by identifying each item column by color (for example, the priority level is in the order of blue> green> yellow> orange> pink> red). Also good. In this case, when the items displayed in blue are selected in ascending order and the items displayed in red are selected in descending order, the order list order generation means 10 rearranges the tracks in ascending order of the items displayed in blue and plays them in the playback order. Set.

  Further, as shown in FIG. 16, the ascending order and descending order of the reproduction order may be represented by arrow symbols 8b1 and 8b2, and priority levels (priority levels 1 and 2) may be described in the arrow symbols 8b1 and 8b2. Also in this case, the original reproduction order is restored by deleting the symbols by clicking again on the arrow symbols 8b1 and 8b2 on the selection screen.

  Furthermore, as shown in FIG. 17, the ascending order of the reproduction order may be represented by the mark 8c1 for the character U, the descending order may be represented by the mark 8c2 for the character D, and the height of the priority level may be represented by the size of the mark. In this case, when the mark 8c1 of the large character U is selected and the mark 8c2 of the small character D is selected, the order list order generation unit 10 arranges the tracks in ascending order of the items in which the mark 8c1 of the large character U is described. Change the playback order. Note that the original reproduction order may be restored by deleting the symbols by clicking the marks 8c1 and 8c2 again on the selection screen.

  When the order list 3 generation unit 10 sets the order of reproduction of the order list 3 as described above, the order list order generation unit 10 determines whether or not a track having the same reproduction order exists in the order list 3 (step ST2a). At this time, if there is no track having the same reproduction order, the order list order generation means 10 sets the order list 3 for which the reproduction order is set in step ST1a as a final list.

  On the other hand, when there are tracks having the same playback order, the order list order generation priority unit 9 uses the access times of the music media A to C input from the media access time detection unit 6 to create instances of the tracks having the same playback order. Give priority level to. Here, the order list order generation priority means 9 assigns a higher priority level in order of shorter access time (step ST3a).

  Next, the order list order generation means 10 compares the priority levels given by the order list order generation priority means 9 between the tracks of the same reproduction order, and the order list 3 is set with the highest priority track as the track at the reproduction order. Is set (step ST4a). Note that the process of setting the playback order of the order list 3 is the same as the process described above.

(4) Content reproduction processing The order list 3 in which the reproduction order is set is stored in a memory (not shown) in the order list control means 1. When a reproduction request is made by the user via the HMI unit 8, the track reproduction unit 7 inputs information for each track in the reproduction order of the order list 3, and searches the music database 2 with the track ID corresponding to the track. The track path is read from the track table 2a-1 and stored. When this is expressed in a database language, it can be expressed as follows.
SELECT
TrackTable. TrackPath TrackPath
FROM TrackTable, Orderlist
WHERE Orderlist.rowid = 1
AND Orderlist.TrackID = TrackTable.TrackID;

  Based on the track path acquired as described above, the track playback means 7 accesses the music data of the corresponding recording medium 5 and executes playback processing. For example, in the case of the order list 3 shown in FIG. 12, the track name “love” at the head of the list is reproduced in order. At this time, the track reproducing means 7 may display the additional information and the reproduction status of the song data being reproduced on the display screen of the display device.

  As described above, according to the first embodiment, when a plurality of additional information is set in the same playback order in the order list 3, the priority of the playback order is given to the additional information according to the access time for each recording medium 5. When assigning levels and rearranging the order of reproduction in the order list 3, the additional information in the same reproduction order is determined on the basis of the priority level, and the recording medium 5 in the order of reproduction in the order list 3 is determined. Play back the song data recorded in. By doing so, a plurality of types of recording media 5 can be handled in a unified manner, and the playback order of content data such as music can be controlled without being conscious of the type of recording media.

  In the first embodiment, the case where music data such as MP3 (MPEG audio layer 3) data is handled has been described. However, the present invention is not limited to this. For example, music and video content such as audio data, video data, karaoke data, ringtone melody data, podcast data, and mixed data of any of these can be handled in the same manner.

Claims (5)

Content in which the additional information is extracted from a plurality of types of recording media on which content data and additional information for specifying the content are recorded, and path information indicating the recording location of the additional information and the content data is registered for each content Database generation means for generating a database;
Access time detecting means for detecting an access time to the content data recorded on the recording medium;
The additional information extracted from the content database is listed in the order in which the content is played back. In determining the playback order in the order list, a plurality of additional information is set to a plurality of non-same content in the same playback order. If there is, order generation priority means for giving a priority level of the reproduction order to the additional information according to the access time for each recording medium detected by the access time detection means,
Reordering the playback order of the order list, and for the additional information of the same playback order, order generation means for determining the playback order based on the priority level;
A content reproduction apparatus comprising: content reproduction means for reproducing content data recorded on the recording medium based on path information acquired from the content database in the order of reproduction of the order list.   2. The content reproduction apparatus according to claim 1, wherein the order generation priority unit assigns a higher priority level to the additional information in the order of shorter access time.   The order generation means presents each item information constituting the additional information registered in the order list in a list format for each content, and displays a selection screen for designating ascending or descending order for each item information on the display device, 2. The content reproducing apparatus according to claim 1, wherein a designation input of a reproduction order is received for each item information in accordance with the selection screen, and the additional information of the order list is rearranged in the designated reproduction order.   4. The content reproduction apparatus according to claim 3, wherein the order generation means displays the priority in the reproduction order designation for each item information on the selection screen.   A program for causing a computer to function as the content reproduction apparatus according to claim 1.

Images