JP4438804B2 - Content reproduction apparatus and content reproduction program - Google Patents

Description

  The present invention relates to a content reproduction apparatus and a content reproduction program, and more particularly to a content reproduction apparatus and a content reproduction program capable of continuously reproducing a plurality of content files stored in a storage medium.

  An AV player generally reproduces a plurality of content files stored on an optical disc such as a CD or a DVD and a plurality of content files stored on an internal hard disk (HDD). Recent AV players can further reproduce a plurality of content files stored on an optical disc or HDD in a predetermined order or randomly. Hereinafter, a method of reproducing content files in a predetermined order is referred to as “continue mode”, and a method of reproducing content files in a random order is referred to as “shuffle mode”.

As described above, recent AV players can select and play back either the continuous mode or the shuffle mode. However, if such a playback method (hereinafter referred to as a play mode) is to be switched during playback of a content file, the AV player must execute a play mode switching process together with the playback process. , Load increases. If the load increases, the reproduction process is affected, such as occurrence of sound interruption. Therefore, a conventional AV player does not accept a play mode switching instruction during reproduction, and when reproduction stops, accepts a play mode switching instruction and performs play mode switching processing.
Japanese Patent Laid-Open No. 2006-238012

  An object of the present invention is to provide a content reproduction apparatus capable of executing play mode switching while suppressing an influence on reproduction processing even when a play mode switching instruction is received during reproduction of a content file.

Means for Solving the Problems and Effects of the Invention

A content reproduction apparatus according to the present invention reproduces a plurality of content files stored in a storage medium. The content reproduction apparatus includes a playlist creation unit, a first determination unit, a playlist update unit, a reproduction unit, a second determination unit, and a display unit. The playlist creation means creates a playlist in which a plurality of content files are listed in a predetermined order when the play mode is the continuous mode, and a plurality of content files in a random order when the play mode is the shuffle mode. Create an enumerated playlist. The accepting means accepts a play mode switching instruction during the reproduction of the content file. The first determining means determines whether or not the accepting means accepts an instruction to switch to a play mode different from the current play mode before the next content file is played after the content file being played is played to the end. Determine whether. The playlist update means is instructed by the switching instruction before the next content file is reproduced when the receiving means receives the switching instruction to the play mode different from the current play mode as a result of the determination. The playlist is updated according to the play mode. The reproduction means reproduces the content files in the order listed in the playlist created by the playlist creation means, and when the playlist is updated by the playlist update means, the content files are in the order listed in the updated playlist. Play. When the receiving means receives the play mode switching instruction, the second determining means determines whether or not the play mode instructed by the switching instruction is different from the play mode of the playlist in which the content file being reproduced is listed. to decide. The display means displays the play mode of the playlist in which the content file being played is listed, and the play mode instructed by the switching instruction is different from the play mode of the playlist in which the content file being played is listed. When the second determining means determines, the displayed play mode is changed to the play mode instructed by the switching instruction. Here, the storage medium may be, for example, an optical disk such as a DVD or a CD, or a hard disk. The content file is, for example, an audio file or a file containing audio and video.

When the content reproduction apparatus according to the present invention receives an instruction to switch the play mode during reproduction of the content file, the content reproduction apparatus does not update the playlist until the reproduction of the content file is completed. Therefore, even if a play mode switching instruction is received during reproduction, the load on the content reproduction apparatus being reproduced can be suppressed, and the influence on the reproduction process can be suppressed. Further, after the reproduction of the content file is completed, the playlist is updated before the next content file is reproduced. Therefore, when the play mode switching instruction is received, the next content file is reproduced based on the updated playlist.
Furthermore, the playlist is updated by the play mode switching instruction after the playback of the content file being played is completed or stopped halfway, but the display of the play mode is switched when the switching instruction is received. . Thereby, the user can confirm that the switching instruction has been accepted.

  Preferably, the content reproduction apparatus further includes a stop unit that stops reproduction of the content file being reproduced in response to a user operation. The first determining means further determines whether or not the accepting means accepts an instruction to switch to a play mode different from the current play mode when the stopping means stops the reproduction of the content file.

  In this case, for example, the content playback apparatus 1 can update the playlist at a timing when the playback of the content file is stopped by a command for stopping playback of the content being played back, such as a stop command or a track skip command.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

[overall structure]
Referring to FIG. 1, content reproduction apparatus 1 according to the present embodiment includes receiving unit 10, microcomputer 11, memory 12, hard disk (HDD) 13, communication unit 14, optical disk drive 15, D / D An A converter 16 and a display 17 are provided. These are connected to each other by a bus 19. The content reproduction apparatus 1 further includes a speaker 18 connected to the D / A converter 16.

  When an optical disk 20 that is a storage medium such as a CD or a DVD is inserted, the optical disk drive 15 reads a plurality of music files in the inserted optical disk 20.

  The HDD 13 as a storage medium stores a plurality of music files transmitted from another computer device (not shown) connected to the communication unit 14. The HDD 13 may also store a plurality of music files read by the optical disk drive 15.

  The memory 12 includes a read only memory (ROM) and a random access memory (RAM). A content reproduction program is installed in advance in the ROM in the memory 12. By executing the content reproduction program by the microcomputer 11, the content reproduction apparatus 1 can execute the operation process described below.

  The memory 12 also stores a song information table 21 shown in FIG. 2 and a playlist 22 shown in FIG. Information related to a plurality of song files stored in the optical disc 20 is registered in the song information table 21. Specifically, the song information table 21 includes a field in which an artist name is registered, a field in which an album name is registered, a field in which a song file ID corresponding to a track number in the optical disc 20 is registered, and each song. It includes a field in which the song title of the file ID is registered and a field in which the reproduction time (performance time) of each song file ID is registered. These pieces of information are displayed on the display 17 while the corresponding music file is being reproduced.

  When the optical disc 20 is inserted into the optical disc drive 15, the content reproduction apparatus 1 reads out the table of contents information (for example, Tabel of Contents: TOC) in the optical disc 20, and based on the table of contents information, the contents of the optical disc 20 are read from a CDDB server (not shown). Get information. The acquired information is registered in the music information table 21 described above. The TOC includes, for example, the total number of songs in the optical disc 20 and the playback time (performance time) of each song. Note that the song information table 21 related to a plurality of song files stored in the HDD 13 is stored in the HDD 13 in advance.

  In the playlist 22 shown in FIG. 3, the music files to be reproduced are listed in the order of reproduction. Referring to FIG. 3, playlist 22 includes a field for registering a reproduction number and a field for registering a music file ID corresponding to each reproduction number. When the play mode is the continuous mode, the music file is listed in the play list 22 in a predetermined order. The predetermined order is, for example, the order stored in the optical disc 20 (that is, the order of track numbers in the music information table 21 described above), the order of arrangement in the HDD 13, and the like. On the other hand, when the play mode is the shuffle mode, the music file is listed in the playlist 22 in a random order. The content playback apparatus 1 performs playback based on a playlist 22 in which song files are listed in a predetermined order in the continuous mode, and a playlist 22 in which song files are listed in a random order in the shuffle mode. Playback based on As a result, in the continuous mode, for example, the music files are played in the order in which they are stored on the optical disk 20 (track number order), and in the shuffle mode, the music files are random rather than in the track number order in the optical disk 20. Played in order.

  The memory 12 also stores a reproduction state table 23 shown in FIG. The reproduction state table 23 includes an “execution play mode” field, a “reproduction number” field, a “switching instruction” field, a “display play mode” field, and a “curID” field. In the “execution play mode” field, the type of play mode currently being executed (continuous mode or shuffle mode) is registered. In the “reproduction number” field, the reproduction number on the playlist 22 of the currently reproduced music file is registered. A switching instruction flag is registered in the “switching instruction” field. When the receiving unit 10 has not received a play mode switching instruction (hereinafter simply referred to as a switching instruction or a switching command) by a user operation, the switching instruction flag is “0”. When the receiving unit 10 receives a switching instruction, the switching instruction flag becomes “1”. In the “display play mode” field, the type of play mode (continuous mode or shuffle mode) displayed on the display 17 is registered. In the “curID” field, the music file ID being reproduced when the receiving unit 10 receives the switching instruction is registered.

  The reproduction state table 23 is used when the content reproduction apparatus 1 switches the play mode.

  The microcomputer 11 controls the entire content reproduction apparatus 1. The microcomputer 11 also executes the operation process described below by executing the content reproduction program stored in the memory 12.

  As shown in FIG. 5, the display 17 displays the artist name, album name, song title, playing time, etc. of the currently playing song file. These pieces of information are specified based on the playlist 22 and the song information table 21. Specifically, the music file ID to be reproduced is specified by the playlist 22, and the music information of the specified music file ID is read from the music information table 21.

  The display 17 further displays the type of the current play mode (continuous mode or shuffle mode) in the area 100. The current play mode is specified based on the “display play mode” field in the playback state table 23. In FIG. 5, the play mode is the continuous mode. In FIG. 5, the play mode is displayed with characters, but may be displayed with a different icon for each type of play mode.

  The receiving unit 10 receives various commands according to user operations. Specifically, a command for changing the status (state) of the playback operation of the content playback device 1 such as a normal playback command, a fast-forward command, a stop command, a track skip command, etc. according to a user operation (hereinafter, these commands are statuses) Accepts a change command). Here, the track skip command is a command for instructing the content reproduction apparatus 1 to stop reproduction of the currently reproduced music file and to reproduce the next music file to be reproduced. Note that when these status change commands are received, the type of the received command is stored in the memory 12.

  The receiving unit 10 further receives a play mode switching command in response to a user operation. The switching command includes the type of play mode specified by the user (continuous mode or shuffle mode). For example, the accepting unit 10 may be a keyboard as the key button, or a receiver that receives various commands transmitted from a remote control device (not shown). Various commands are input to the content reproduction apparatus 1 by the above-described key buttons, keyboard, and remote control device. A toggle switch button may be used as the switch command button.

  The D / A converter 16 converts the music file to be reproduced from a digital signal to an analog signal. The speaker 18 receives the analog signal output from the D / A converter 16 and outputs it as sound to the outside.

[Operation overview]
The operation of the content reproduction apparatus 1 having the above configuration is as follows. In the present embodiment, the operation of the content reproduction apparatus 1 when reproducing a plurality of song files in the optical disc 20 inserted in the optical disc drive 15 will be described. However, a plurality of song files stored in the HDD 13 are described. The operation of the content reproduction apparatus 1 when reproducing is the same.

  The receiving unit 10 of the content playback apparatus 1 receives a play mode switching command and a normal playback command based on a user operation. Here, it is assumed that the type of play mode included in the switching command is “continuous mode”.

  The microcomputer 11 reads the table of contents information (TOC) in the optical disc 20 and creates a song information table 21. Further, the microcomputer 11 creates a playlist 22 in which song files are listed in the order of track numbers of a plurality of song files stored on the optical disc 20 based on the type of play mode in the switching command = continuous mode. After creating the playlist 22, the microcomputer 11 sequentially reproduces the music file in the order listed in the playlist 22. In addition, when reproducing the music file, the content reproduction apparatus 1 identifies the music file ID to be reproduced based on the playlist 22 and reads the music information of the identified music file ID from the music information table 21. The content playback apparatus 1 displays the read song information (artist, album, title, playback time, etc.) on the display 17. Furthermore, the content reproduction apparatus 1 displays the play mode (here, the continuous mode) of the created playlist 22 in the area 100 of the display 17.

  When the user wants to switch the play mode during reproduction of the music file, the user transmits or inputs a switching command to the content reproduction apparatus 1 using a remote control device or the like. When receiving the switching command, the content reproducing apparatus 1 switches the play mode displayed in the area 100 in the display 17 to the play mode specified by the switching command and displays it. Thereby, the user can recognize that the play mode switching command has been accepted.

  As described above, the content reproduction apparatus 1 reproduces the music file in the order listed in the playlist 22. Therefore, when the play mode is switched, the playlist 22 must be updated. However, when the content playback apparatus 1 receives a switching command during playback, the content playback apparatus 1 switches the display on the display 17 but does not update the playlist 22 during playback. If the playlist 22 is updated during the reproduction of the music file, the load on the microcomputer 11 increases. This is because the microcomputer 11 has to execute the update process of the playlist 22 together with the reproduction process of the music file. If the load on the microcomputer 11 increases, the music file playback process may be affected, and the audio of the music file may be interrupted.

  Therefore, when the content playback device 1 receives the switching command, the content playback device 1 switches the display on the display 17 but does not execute the update processing of the playlist 22. Then, after the music file has been played to the end, when the next music file is prepared for playback, a playlist update process is executed. Thereby, when the next music file is reproduced, the music file can be reproduced based on the updated playlist 22. That is, the play mode can be switched. Furthermore, since the play list 22 is updated after the music file has been reproduced to the end, there is no audio interruption or the like.

  In order to achieve the above-described effect, the content reproduction apparatus 1 executes the reproduction process shown in FIGS. 6 and 7 and the play mode switching acceptance process shown in FIG. Details of the operation of the content reproduction apparatus 1 will be described below.

[Operation processing during normal playback]
First, the operation of the content playback apparatus 1 that has received a play mode switching instruction during normal playback of the music file M3 based on the playlist 22 (continuous mode playlist) shown in FIG. 3 will be described. To do.

  With reference to FIGS. 6 to 8, the content playback apparatus 1 determines whether or not a status change command is input (S1) in the playback process (FIG. 6) and the song file M3 during playback of the song file M3. It is monitored whether or not the reproduction is completed (S6). Further, in the play mode switching reception process (FIG. 8), the content reproduction apparatus 1 monitors whether or not the reception unit 10 has received a play mode switching command in response to a user operation during the reproduction of the music file M3 (S41). . When the reception unit 10 receives the switching command (YES in S41), the microcomputer 11 determines whether or not the play mode in the switching command is the same as the execution play mode in the reproduction state table 23 shown in FIG. S42). When the play mode in the switching command is the shuffle mode, the execution play mode in the reproduction state table 23 is different from the continuous mode (NO in S42). That is, the microcomputer 11 determines that a command for switching to a play mode different from the current play mode has been received. At this time, the microcomputer 11 sets the switching instruction flag in the reproduction state table 23 to “1” (S43), and registers the ID = M3 of the currently reproduced music file M3 as curID (S44).

  Subsequently, the microcomputer 11 switches the play mode displayed in the area 100 of the display 17 from “continue” to “shuffle” (S45). At this time, the microcomputer 11 switches the play mode registered in the “display play mode” in the reproduction state table 23 from “continue” to “shuffle”.

  By switching the play mode displayed on the display 17, the user can recognize that the play mode switching command has been received by the content reproduction device 1. As described above, the content reproduction apparatus 1 switches the display on the display 17 when receiving a command for switching to a play mode different from the current play mode. However, the content reproduction apparatus 1 does not execute the update process of the playlist 22 until the reproduction of the music file M3 is completed.

  When the music file M3 has been played to the end (YES in S6), the content playback device 1 executes the next music playback preparation process shown in FIG. 7 (S13). In the next song playback preparation process, a song file to be played next (hereinafter referred to as the next song file) is specified and played back. However, when the play mode switching command has already been received, the playlist 22 is updated, and the playlist 22 corresponding to the play mode instructed by the switching command is constructed. Then, based on the newly constructed playlist 22, the next music file is identified and reproduced.

  Referring to FIG. 7, the microcomputer 11 first determines whether or not the switching instruction flag in the reproduction state table 23 is “1” (S21). When the switching instruction flag is “0” (NO in S21), since the play mode switching command has not been received, the next song file is identified based on the playlist 22 currently stored in the memory 12 (S26 and S27). Specifically, the reproduction number “3” in the reproduction state table 23 is incremented to “4” (S26), and the music file M4 with the reproduction number “4” is specified as the next music file on the playlist 22 (S26). S27). Then, the reproduction of the specified music file M4 is started (S39).

  On the other hand, if the result of determination in step S21 is that the switch instruction flag is “1” (YES in S21), the content playback apparatus 1 accepts a switch command during playback of the song file M3. Therefore, the microcomputer 11 executes a playlist update process (S20). In the playlist update process, the playlist 22 is updated to a playlist corresponding to the play mode (shuffle mode) designated by the switching command.

  The microcomputer 11 first resets the playlist 22 stored in the memory 12 (S22). Subsequently, the type of play mode instructed by the switching command is specified (S23). The microcomputer 11 specifies the play mode registered in the “display play mode” in the reproduction state table 23 as the play mode instructed by the switching command. Here, the play mode instructed by the switching command is specified as the shuffle mode. At this time, the microcomputer 11 updates the “execution play mode” in the reproduction state table 23 to the shuffle mode.

  Subsequently, the playlist 22 is reconstructed based on the specified play mode (shuffle mode). Since the identified play mode is the shuffle mode (NO in S24), the microcomputer 11 creates a playlist 22 in which a plurality of song files M1 to M10 in the optical disc 20 are listed at random (S28 to 32).

  First, the music file M3 registered in the curID in the reproduction state table 23 is registered at the beginning (reproduction number = 1) of the playlist 22 that has been reset (S28). Subsequently, the microcomputer 11 generates a random number RN within a range from 1 to the total number of music files in the optical disc 20 (here, 10) (S29). Here, the total number of music files is determined based on the music information table 21.

  The microcomputer 11 identifies the music file with the track number = RN based on the music information table 21 and determines whether the identified music file is already registered in the playlist 22 (S30). For example, when the track number RN = 3, the specified music file is M3, but the music file M3 is already registered with the reproduction number = 1 (YES in S30). In this case, the process returns to step S29 to generate the random number RN again (S29). By step S30, it is possible to prevent the same music file from being registered in the playlist 22, and it is also possible to prevent the same music file from being registered continuously.

  As a result of the determination in step S30, if the song file identified by the track number RN is not registered in the playlist 22 (NO in S30), the identified song file is registered in the playlist 22 (S31). At this time, the music file ID is registered in order from the field corresponding to the smallest reproduction number among the fields in which the music file ID is not registered. When the microcomputer 11 determines that any of the music files stored on the optical disc 20 is not registered in the playlist 22 (NO in S32), the process returns to S29. In short, the processing of steps S29 to S31 is repeated until all the music files in the optical disc 20 are listed in the playlist 22.

  When all the music files are registered in the playlist 22 (YES in S32), the update of the playlist 22 is completed. An example of the playlist 22 based on the shuffle mode is shown in FIG. After updating the playlist 22, the microcomputer 11 sets the switching instruction flag in the reproduction state table 23 to “0” and resets curID (S33). Further, the reproduction number in the reproduction state table 23 is set to “1” (S40).

  After completing the playlist update process (S20), the microcomputer 11 specifies the next song file (S26 and S27). The microcomputer 11 increments the reproduction number “1” in the reproduction state table 23 to “2” (S26), and selects the music file M9 corresponding to the reproduction number “2” on the updated playlist 22 in FIG. The next music file is specified (S27). At this time, the microcomputer 11 reads the music information of the specified music file M9 from the music information table 21 and displays it on the display 17. Then, the specified music file M9 is reproduced (S39).

  As described above, when the content reproduction apparatus 1 receives a play mode switching command during reproduction of a music file, the content reproduction apparatus 1 does not execute the playlist update process until the reproduction of the music file is completed. For this reason, the load on the microcomputer 11 during reproduction is suppressed, and even if a switching command is received during reproduction, the sound is not cut off.

  Furthermore, when the content playback device 1 receives a switching command, the content playback device 1 switches the play mode displayed in the area 100 of the display 17. As a result, the user can immediately confirm that the switching command has been accepted.

  The playlist update process (S20) when the content playback device 1 receives a command to switch to the continuous mode while the music file M9 is being played in the playlist 22 based on the shuffle mode is as follows.

  After the music file M9 has been reproduced to the end (YES in S6), the microcomputer 11 executes a playlist update process (S20). The microcomputer 11 resets the current playlist 22 (S22). Then, referring to the “display play mode” in the reproduction state table 23, the play mode instructed by the switching command is identified as the continue mode (S23). Since the identified play mode is the continue mode (YES in S24), the microcomputer 11 reconstructs the playlist 22 based on the continue mode (S34 to S38).

  First, the microcomputer 11 registers curID = M9 at the head of the playlist 22 (reproduction number = 1) (S34). Subsequently, the microcomputer 11 refers to the song information table 21 and identifies the track number k of the song file M9 (S35). Here, the track number k = 9.

  Subsequently, the microcomputer 11 increments the track number k to k = 10 (S36), specifies the song file M10 with the track number k = 10 in the song information table 21, and sets the song number to the reproduction number 2 on the playlist. The file M10 is registered (S37). Until all the music files M1 to M10 in the music information table 21 are registered in the playlist 22 (YES in S38), the microcomputer 11 sequentially registers the music files specified in step S37 in the order of the reproduction numbers of the playlist 22. To do. FIG. 10 shows an example of the playlist 22 updated by the above operation.

  When all the music files are registered in the playlist 22 (YES in S38), the update of the playlist 22 is completed. After updating the playlist 22, the microcomputer 11 sets the switching instruction flag in the reproduction state table 23 to “0” and resets curID (S33). Further, the reproduction number in the reproduction state table 23 is set to “1” (S40). The subsequent operation is the same as that when the playlist 22 in the shuffle mode is constructed. When the playlist 22 shown in FIG. 10 is constructed, the music file M10 is specified as the next music file (S26 and S27).

[Operation when status change command is received by user operation]
The content playback apparatus 1 may receive a play mode switching command during playback of a music file, and then may receive status change commands such as fast-forward playback, track skip, stop, normal playback, etc. by user operation. Even in such a case, the content playback apparatus 1 executes the play mode update process after playing the music file being played to the end or stopping the music file being played in response to the status change command. . Hereinafter, the operation of the content reproduction apparatus 1 when receiving a status change command will be described.

[Track skip command]
First, the operation of the content reproduction apparatus 1 when the content reproduction apparatus 1 that is reproducing the music file M3 receives a track skip command based on a user operation after receiving a command to switch to a play mode different from the current play mode. Will be described. The track skip command is a command for instructing the reproduction of the music file to be reproduced next after stopping the reproduction of the music file being reproduced.

  When the microcomputer 11 receives the status change command (YES in S1), the microcomputer 11 specifies the type of the status change command (S2 to S5). When the status change command is a track skip command (YES in S3), the microcomputer 11 stops the reproduction of the music file M3 currently being reproduced (S7), and executes the next music reproduction preparation process (S13).

  As a result, the content reproduction apparatus 1 can execute the playlist update process (S20) after stopping the reproduction of the music file currently being reproduced in response to the track skip command. Then, the next song file can be identified and reproduced based on the updated playlist 22 (S26, S27 and S39).

[Stop and normal playback]
During playback of the music file M3, the content playback apparatus 1 receives a command for switching to a play mode different from the current play mode, and further receives a stop command based on a user operation (YES in S1 in FIG. 6). The microcomputer 11 stops the reproduction of the music file M3 (S7). After the stop, the microcomputer 11 executes the next music reproduction process (S13) and executes the play mode update process (S20). After execution, the type of command currently instructed is specified (S25). When receiving the status change command, the content reproduction apparatus 1 registers the received command type in the memory 12. When a new status change command is received, the command registered in the memory 12 is updated to the newly received status change command.

  If the result of determination in step S25 is that the type of command stored in the memory 12 is a stop command (YES in S25), the microcomputer 11 ends the next playback preparation process. That is, in this case, reproduction is not started.

  When the microcomputer 11 receives a normal playback command based on a user operation (YES in S1 in FIG. 6 and YES in S5), the microcomputer 11 starts playback from the music file with the playback number = 1 in the updated playlist 22. In other words, after receiving a stop command and then receiving a normal start command, the content playback apparatus 1 starts playback from the first song file in the playlist 22.

[Fast forward playback]
When the content playback apparatus 1 receives a fast-forward playback command based on a user operation during playback of the music file M3 (YES in S1 in FIG. 6, YES in S4), the microcomputer 11 starts fast-forward playback of the music file M3. (S8). As a result of the fast-forward playback, when the music file M3 is fast-forwarded to the end (YES in S9), the microcomputer 11 executes the next music playback preparation process (S13). On the other hand, when the fast-forward playback cancel command is received by the user operation before fast-forwarding the music file M3 to the end (YES in S10), the microcomputer 11 stops the fast-forwarding, and the music file M3 from the point when the music file M3 is stopped Normal reproduction is resumed (S11). In short, in the case of fast forward playback, the microcomputer 11 executes the next music playback preparation process (S13) and the playlist update process (S20) only when the music file M3 is played back to the end by fast forward playback.

  As described above, in the present embodiment, the operation of the content reproduction apparatus 1 when reproducing the optical disc 20 has been described. However, even when a plurality of song files stored in the HDD 13 are reproduced, the play mode is switched by the above-described method. Is possible.

  In the present embodiment, the content reproduction apparatus 1 reproduces a song file. However, instead of the song file, the content reproduction apparatus 1 may reproduce another audio file, a video file, or a file including video and audio. In short, the content reproduction apparatus 1 can reproduce a content file.

  In the present embodiment, when the playlist 22 in the continuous mode is created, a plurality of music files stored on the optical disc are listed in the playlist 22 in order from the track number = 1. Also good. In short, the enumeration of song files in the playlist in the continuous mode may be either in ascending order or descending order.

  Also, in this embodiment, after receiving the stop command, the continue mode playlist 22 is created with the curID song file as the head. However, the curID song file is not set as the head, and the song information table 21 contains the curID song file. A playlist 22 listing song files in ascending or descending order of track numbers may be created.

  While the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiment, and can be implemented by appropriately modifying the above-described embodiment without departing from the spirit thereof.

It is a functional block diagram which shows the structure of the content reproduction apparatus by embodiment of this invention. It is a figure which shows the data structure of the music information table stored in the memory in FIG. It is a figure which shows the data structure of the play list stored in the memory in FIG. It is a figure which shows the data structure of the reproduction | regeneration state table stored in the memory in FIG. It is an example of the display screen displayed on the display in FIG. It is a flowchart which shows the detail of the reproduction | regeneration processing of the content reproduction apparatus shown in FIG. It is a flowchart which shows the detail of operation | movement of step S13 in FIG. It is a flowchart which shows the detail of the play mode switch reception process of the content reproduction apparatus shown in FIG. It is a figure which shows the other example of the play list shown in FIG. FIG. 10 is a diagram illustrating another example of the playlist illustrated in FIGS. 3 and 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Content playback apparatus 10 Reception part 11 Microcomputer 12 Memory 13 Hard disk 17 Display 20 Optical disk 21 Song information table 22 Playlist 23 Playback state table

Claims (3)

A content reproduction device for reproducing a plurality of content files stored in a storage medium,
When the play mode is the continuous mode, a playlist is created in which the plurality of content files are listed in a predetermined order. When the play mode is the shuffle mode, the plurality of content files are listed in a random order. Playlist creation means for creating a playlist;
Accepting means for accepting an instruction to switch the play mode during reproduction of the content file;
After the content file being played is played back to the end, before the next content file is played back, a first determination is made as to whether or not the receiving means has received an instruction to switch to a play mode different from the current play mode. Judgment means,
As a result of the determination, when the accepting unit accepts an instruction to switch to a play mode different from the current play mode, the play list designated by the switch instruction is displayed before the next content file is played. Playlist update means for updating the playlist according to the mode;
The content files are reproduced in the order listed in the playlist created by the playlist creation means, and when the playlist is updated by the playlist update means, the content files are played in the order listed in the updated playlist. Playback means for playback;
When the accepting unit accepts the play mode switching instruction, it is determined whether the play mode instructed by the switching instruction is different from the play mode of the playlist in which the content file being reproduced is listed. Means of judging,
When the play mode of the playlist in which the content file being reproduced is listed is displayed and the play mode instructed by the switching instruction is different from the play mode of the playlist in which the content file being reproduced is listed, the second And a display means for changing the displayed play mode to the play mode instructed by the switching instruction. The content playback apparatus according to claim 1, further comprising:
In response to a user operation, it comprises stop means for stopping the playback of the content file being played,
The first judging means further judges whether or not the accepting means accepts an instruction to switch to a play mode different from the current play mode when the stopping means stops the reproduction of the content file. Content playback apparatus. A content reproduction program installed in a content reproduction device for reproducing a plurality of content files stored in a storage medium,
A playlist in which the plurality of content files are listed in a predetermined order when the play mode is the continuous mode, and a playlist in which the plurality of content files are randomly listed when the play mode is in the shuffle mode. The steps of creating
Receiving a play mode switching instruction during playback of a content file;
Determining whether or not an instruction to switch to a play mode different from the current play mode is received after the content file being played is played to the end and before the next content file is played;
As a result of the determination, when an instruction to switch to a play mode different from the current play mode is received , the play list is set in accordance with the play mode instructed by the switch instruction before the next content file is reproduced . Updating to a playlist;
Playing the content files in the order listed in the created playlist, and when the playlist is updated, playing the content files in the order listed in the updated playlist;
Determining whether the play mode instructed by the switching instruction is different from the play mode of the playlist in which the content file being reproduced is listed when receiving the play mode switching instruction;
When the play mode of the playlist in which the content file being played is listed is displayed, and the play mode instructed by the switching instruction is determined to be different from the play mode of the playlist in which the content file being played is listed A content reproduction program for causing a computer to execute the step of changing the displayed play mode to the play mode instructed by the switching instruction.

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