JP2005196833A - Data reproducing apparatus and management method of reproduced data in data reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a "data reproducing apparatus and management method of reproduced data in its apparatus" which can delete reproduced data from the registration of a reproducing list efficiently in a short period of time. <P>SOLUTION: An audio system 1 has a memory means (a hard disk 10) to store a plurality of music data; a play list creation means to choose desired music data from a plurality of music data stored in a hard disk, to register the chosen music data into a play list, and create the play list; a list memory means (the hard disk 10) to store a plurality of play lists created by the play list creation means; and a management database means (the hard disk 10) to store identification information to identify which play list the music data are registered in at the time of the creation of the play list. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a data reproducing apparatus that reproduces music, video data, and the like, and more particularly, to a data reproducing apparatus having a mass storage device such as a hard disk drive (HDD) as a storage medium.

  In recent years, audio / video (AV) devices equipped with a hard disk drive have been commercialized. As a feature of an AV device equipped with an HDD, a large amount of music, video data, and the like can be stored, and the stored data can be edited.

  In general, music data stored in the HDD can be collectively managed and controlled by a single database. However, when the number of songs increases, music selection and editing become complicated and complicated for the user. Therefore, a playlist function is used to facilitate management of music stored in the HDD. The playlist function is a function in which the user selects tens to hundreds of units of music from songs stored in the HDD according to his / her preference and registers the selected music in a file called a playlist. When a desired playlist is selected, the music registered in the playlist can be reproduced and edited.

  Patent Document 1 relates to an editing apparatus that edits a program recorded on a recording medium. When a track (music file) is edited, information corresponding to the track is deleted from a playlist, thereby editing the track. Is performed, the playback of the music registered in the playlist is not disturbed.

JP 2003-51179 A

  However, conventional data reproducing apparatuses such as AV equipment have the following problems. As the number of playlists increases with the increase in the number of data stored in the HDD, the time required for managing registration and deletion of each complicated song tends to increase. In particular, in the case of in-vehicle devices, the tendency is remarkable due to the performance of the mounted hard wafer, CPU, and the like.

  For example, when managing a song by creating a large number of playlists, if an arbitrary song is deleted from the playlist, whether or not the deletion candidate song is registered with reference to each playlist file In order to follow the procedure of searching for “no” and then deleting the song, a huge amount of time must be spent on a series of processing operations. Suppose that 50 songs are registered in one playlist and there are 100 playlists. Opening a playlist file, searching for a song to be deleted, deleting the corresponding song, and taking about 100 ms to close the file, this is done for all playlists, It takes 100 ms × 100 = 10 seconds. This time of 10 seconds in the passenger compartment is bothersome for the user and causes stress.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to provide a data reproduction apparatus capable of efficiently managing reproduction data stored in a storage device and a reproduction data management method in the apparatus. .
Still another object of the present invention is to provide a data reproducing apparatus capable of efficiently deleting reproduction data from registration of a reproduction list in a short time and a method for managing reproduction data in the apparatus.

  A data reproduction apparatus having a data reproduction function according to the present invention includes a storage unit that stores a plurality of reproduction data, and selects desired reproduction data from the plurality of reproduction data stored in the storage unit, and selects the selected reproduction data. Playlist creation means for registering in a playlist and creating the playlist, playlist storage means for storing a plurality of playlists created by the playlist creation means, and which playback data is played back when the playlist is created And management database means for storing identification information for identifying whether the information is registered in the list.

  Preferably, the data reproduction apparatus further includes a search unit that searches the corresponding reproduction list with reference to the identification information of the management database unit when processing the reproduction data. This process includes deleting the reproduction data from the registration of the reproduction list searched by the search means.

  The data playback apparatus further determines a storage unit that stores the playlist searched by the search unit as a deletion candidate playlist, and determines whether or not the playlist selected by the user matches the stored deletion candidate playlist. And a deletion unit that deletes reproduction data from the deletion candidate reproduction list when it is determined that the two match.

  A data reproducing apparatus having a data reproducing function according to another invention selects a reproduction means to be reproduced from a storage means for storing a plurality of reproduction data and a plurality of reproduction data stored in the storage means. Playlist creation means for registering data in a reorganization list and creating a playlist, playlist storage means for storing a plurality of playlists created by the playlist creation means, and playback data when creating the playlist The reproduction data is registered with reference to the identification information of the reproduction data when processing the reproduction data, and the adding means for adding the identification information for identifying the reproduction list to which the reproduction data is registered. And a search means for searching the playback list.

  Furthermore, a method for managing reproduction data in a data reproduction apparatus according to the present invention includes a step of storing a plurality of reproduction data in a storage device, selecting reproduction data from the plurality of reproduction data stored in the storage device, and selecting the selected reproduction data Creating a playlist by registering the data in the playlist, storing the created playlist in the storage device, and indicating to which playlist the playback data is registered when the playlist is created Creating identification information for identification and storing it in the storage device; and when processing the reproduction data, refer to the identification information stored in the storage device and refer to the reproduction list in which the reproduction data is registered. Searching.

  According to the present invention, at the time of creating a playlist, the management database means for storing identification information for identifying in which playlist the reproduction data is registered is provided, and the reproduction data is referred to by referring to this identification information. Can be searched efficiently. For this reason, when deleting playback data registered in a playlist, it is not necessary to open individual playlist files and check for the presence or absence of playback data, as in the past. In addition, a reproduction list can be searched in a short time, and reproduction data can be deleted therefrom. Further, by referring to the identification information, it is possible to collectively display all reproduction lists in which reproduction data is registered.

  The data reproducing apparatus according to the present invention is preferably implemented by an audio apparatus equipped with an HDD as a storage medium.

  FIG. 1 is a block diagram showing the configuration of an audio device equipped with an HDD according to an embodiment of the present invention. The audio apparatus 1 according to the present embodiment includes a hard disk 10 that stores a plurality of music data (music files) and a management database for managing music data, a decoder 12, and a digital audio signal output from the decoder 12 in analog form. It has a digital / analog converter (DAC) 14 for converting into an audio signal, an amplifier 16 for amplifying the analog audio signal, and a speaker 18 for converting the amplified analog audio signal into an audible sound. The music data can be stored in the hard disk 10 in a compression format such as MP3 (MPEG-1 layer 3), WAV, WMA (Windows Media Audio), etc., and the decoder 12 decompresses the read music data.

  The audio device 1 is further connected to a read / write control unit 20 for writing data to the hard disk 10 or reading data from the hard disk 10 and a personal computer or other CD / DVD playback device, etc., from which digital audio data is input. Or an input / output port 22 for outputting digital audio data to them, an input unit 24 for receiving operation input from a user, a RAM 26 for temporarily storing music data, processed data, and the like, and the audio apparatus of this embodiment A ROM 28 for storing a program for controlling the data management, a CPU 30 for executing the program and controlling each unit, a display control unit 32, and a display 34 such as a liquid crystal.

  Next, the management method of music data according to the present embodiment will be described in order of (a) creating a playlist, (b) editing a playlist, and (c) displaying a playlist.

(A) Creation of Playlist FIG. 2 is a diagram showing an operational flowchart for creating a playlist. When the audio apparatus 1 is in the standby state, the CPU 30 determines whether or not a playlist has been created (step S101). For example, when a user requests creation of a playlist via the input unit 24, the CPU 30 starts creating a playlist. Alternatively, when a CD playback device or a DVD playback device is connected to the input / output port 22, the CPU 30 may automatically determine ripping (recording) and start creating a playlist.

  If it is determined that a playlist is to be created, the CPU 30 displays a playlist creation screen on the display 34 via the display control unit 32 (step S102). FIG. 3 is an example of a playlist creation screen. For example, a list 100 of music files stored in the HDD is displayed on the display 34. Each music file is given a song number (1, 2, 3,...) In the order of the stored file, and further, a song name, artist name, playback time, etc., showing the simple features of the music file are displayed. Below that, a play list 110, a selection button 112, a registration button 114, a cancel button 116, and an end button 118 are displayed.

  When a playlist 110 is newly created, a new playlist having consecutive numbers from the playlist that has already been created is displayed. As will be described later, when editing the playlist, it responds to the user's selection. Then, the playlist stored in the HDD is displayed.

  The user selects the selection button 112 by cursor operation or touch panel operation, and selects a desired music file from the list of music files 100. Next, a music file is registered in the playlist 110 by selecting the registration button 114 (step S103).

  When the registration of all music files is completed, the user selects the end button 118 (step S104). As a result, the CPU 30 stores the playlist 110 in the management database. At the same time, the CPU 30 creates identification information indicating in which playlist the music file is registered, and stores this in the management database (step S105). In the illustrated example, identification information indicating that each of the music pieces A to D registered in the playlist 3 is registered in the playlist 3 is created and stored.

  FIG. 4 is a diagram for explaining the contents of the management database. The management database 200 is a database for managing various data such as music data stored in the HDD. Here, the relationship with the playlist will be particularly described. The management database 200 includes a song number 202, a start address 204, and identification information 206 for a stored music file (music data). The song number 202 is a sequential number assigned from the first music file to the last music file, and can also be used to identify the music file. The start address 204 indicates the address of the HDD where the music file is actually stored. The identification information 206 indicates the playlist number in which the music file is registered. For example, by referring to the identification information 206, it is understood that the song number 1 is registered in the playlist 3 (PL # 3) and the song number 2 is registered in the playlist 5 (PL # 5). It can also be seen that song number 3 is registered in the playlists 2 and 5 in duplicate. In this example, the total number of stored music files is shown as 5000 songs.

  On the other hand, ten playlists from 211 to 220 are created, and 50 music files are registered in each playlist. As a matter related to the registered music file, in addition to the start address, a song name, artist name, playback time, etc. may be registered.

  When performing data reproduction, the user can select a desired playlist from the input unit 24. For example, a plurality of playlist headings can be displayed on the display 34, and a desired playlist can be selected therefrom. The CPU 30 refers to the start address of the registered music file for the selected playlist, reads the corresponding music data from the HDD via the read / write control unit 20, and outputs this from the speaker 18. At this time, the name of the song being played, the name of the artist, and the playback time are displayed on the display 34. The playback order of the songs may be the order of registration in the playlist or may be random.

(B) Editing Playlist As an example of editing a playlist, an example in which a music file registered in a playlist is deleted will be described with reference to the flowchart of FIG. When deleting a music file from registration of a playlist, the user sets the audio device to a playlist editing mode, and further sets a music file deletion mode therefrom. Next, the user inputs a song name, a song number, etc. in order to specify a music file to be deleted from the input unit 24. Thereby, CPU30 starts the process which deletes the input music file from a play list (step S201).

  The CPU 30 searches for the music file input from the management database stored in the HDD, and refers to the identification information 206 (step S202). Then, the playlist in which the music file to be deleted is registered from the identification information is searched (step S203), and the music file is deleted therefrom (step S204). When the music file is registered in another playlist, the music file is also deleted from the playlist. Thus, this routine is repeated until the corresponding music file is deleted from all the playlists (step S205).

  For example, in the example shown in FIG. 4, when there is an input to delete the music file with the music number 3, the playlist 2 (PL # 2) is searched from the identification information 206, and the music file with the music number 3 is searched from there. Is deleted (step S204). Further, since the music file of the music number 3 is also registered in the playlist 5 (PL # 5), the playlist 5 is searched and the music file is deleted therefrom.

  When deleting a music file, for example, a deletion screen as shown in FIG. 6 is displayed on the display 34 to highlight the music file to be deleted (hatching in the figure). The user may confirm the music file to be deleted, select the cancel button 116, and execute deletion. Or you may make it delete automatically, without displaying such a deletion screen.

  When deleting a music file from playlist registration by the conventional method, it is necessary to check whether or not the corresponding music file is registered after opening each playlist file, in other words, from step S203. Although it is necessary for the user to repeat the loop processing up to S205 for the number of playlists, in this embodiment, only the corresponding playlist can be searched from the identification information in the management database, so the music file can be deleted in a very short time. It can be performed.

(C) Display of playlist When the user wants to check which playlist a music file to be reproduced is registered in, the user can display the playlist in which the music file is registered in a lump. For example, when the edit mode is set to the display mode and the user inputs a song name or song number of the music file, the CPU 30 refers to the identification information 206 in the management database and searches all playlists in which the music file is registered. Then, this is collectively displayed on the display 34.

  The user can check those playlists and, for example, can add and register other music files (for example, the same album, the same artist, the same genre) related to the music files registered in the playlist. .

  Next, a second embodiment of the present invention will be described. In the above embodiment, when there is a request to delete a music file, the corresponding playlist is searched, and the music file is deleted at that time. In the second embodiment, the corresponding playlist is selected by the user. Delete music files. FIG. 7 is a flowchart showing the operation of deleting a music file according to the second embodiment.

  Steps S301 to S303 are the same as in the first embodiment. Next, the searched playlist is stored in the RAM 26 or HDD as a deletion candidate playlist (step S304). Thereafter, when the playlist is edited in the audio device or when data reproduction is performed by the playlist function, the CPU 30 determines whether or not the selected playlist matches the stored playlist (step). S305) When it is determined that they match, the music file to be deleted from the playlist is deleted (step S306). Thereby, the trouble of deleting the music file from the playlist can be further simplified.

  Next, a third embodiment of the present invention will be described. In the first and second embodiments, the identification information is added to the management database, and the identification information is referenced to search the playlist in which the desired music file is registered. In this embodiment, the music file is provided with identification information. For example, music data such as MP3 has tag information in itself. Accordingly, identification information for identifying the playlist as described above can be added to the tag information. For example, when the user requests to delete a desired music file from the playlist, the CPU 30 may search for the music file from the management database and search for the playlist from the identification information included therein.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. Deformation / change is possible.

  In the above embodiment, music data is exemplified as reproduction data. However, the present invention is not limited to this, and video data may be used. In this case, the present invention is implemented in an AV apparatus or the like capable of reproducing video data.

  The data reproducing apparatus according to the present invention and the method for managing reproduced data in the apparatus are used in an AV apparatus equipped with a rewritable mass storage device such as a hard disk. The AV device can reproduce audio and video data, and may be for in-vehicle use. Further, such an AV device may be an electronic device or an electronic system combined with a television reception function, a navigation function, or the like.

It is a block diagram which shows the structure of the audio apparatus with HDD which concerns on the Example of this invention. It is an operation | movement flowchart about creation of the play list in a present Example. It is a figure which shows the creation screen of a play list. It is a figure explaining the contents of a management database. It is an operation | movement flowchart about deletion of a play list. It is a figure which shows a deletion screen. It is an operation | movement flowchart about the deletion of the music file by 2nd Example.

Explanation of symbols

1: Audio device, 10: HDD
12: Decoder, 14: DAC
16: AMP, 18: speaker 20: R / W control unit, 22: I / O port 24: input unit, 26: RAM
28: ROM, 28: CPU
32: Display control unit, 34: Display

Claims (10)

A data reproduction device having a data reproduction function,
Storage means for storing a plurality of reproduction data;
Playlist creation means for selecting desired playback data from a plurality of playback data stored in the storage means, registering the selected playback data in a playlist, and creating a playlist;
Playlist storage means for storing a plurality of playlists created by the playlist creation means;
A management database means for storing identification information for identifying in which playlist the playback data is registered when the playlist is created;
A data reproducing apparatus having: 2. The data reproduction apparatus according to claim 1, further comprising a retrieval unit that retrieves a reproduction list in which reproduction data to be processed is registered by referring to the identification information of the management database unit when processing the reproduction data. apparatus. The data reproduction apparatus according to claim 2, wherein the processing of the reproduction data includes deleting the reproduction data from registration of the reproduction list searched by the search means. The data playback apparatus further determines a storage unit that stores the playlist searched by the search unit as a deletion candidate playlist, and determines whether or not the playlist selected by the user matches the stored deletion candidate playlist. 4. The data reproducing apparatus according to claim 3, further comprising: a determining unit that deletes reproduction data from the deletion candidate reproduction list when it is determined that the two match. The data reproducing apparatus according to claim 2, further comprising display means for collectively displaying the reproduction list searched by the searching means. A data reproduction device having a data reproduction function,
Storage means for storing a plurality of reproduction data;
Playlist creation means for selecting playback data to be played back from a plurality of playback data stored in the storage means, registering the selected playback data in a rearrangement list, and creating a playlist;
Playlist storage means for storing a plurality of playlists created by the playlist creation means;
A granting unit for granting identification information for identifying to which playlist the playback data is registered when the playlist is created;
Search means for searching for a reproduction list in which reproduction data is registered with reference to identification information of the reproduction data when processing the reproduction data;
A data reproducing apparatus having: The data reproduction apparatus according to claim 6, wherein the corresponding reproduction data is deleted from the searched reproduction list. A method for managing playback data in a data playback device, comprising:
Storing a plurality of reproduction data in a storage device;
Selecting reproduction data from a plurality of reproduction data stored in the storage device, creating the reproduction list by registering the selected reproduction data in the reproduction list, and storing the created reproduction list in the storage device;
When creating a playlist, create identification information for identifying which playlist the playback data is registered in, and store this in the storage device.
When processing the reproduction data, the reproduction list in which the reproduction data is registered is searched with reference to the identification information stored in the storage device.
Management method of playback data. The reproduction data management method according to claim 8, wherein the reproduction data management method further includes deleting the corresponding reproduction data from the searched reproduction list. The reproduction data management method according to claim 8, wherein the reproduction data management method further displays all the searched reproduction lists.

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