JP4252525B2 - Music player - Google Patents

Description

  The present invention relates to a music playback device that plays back music data recorded in units of folders.

Recently, with the progress of music data compression technology such as MP3 (MPEG-1 Audio Layer 3) and the price reduction of hard disk devices, the music data recorded on CDs and DVDs are compressed and stored in the hard disk devices. A music playback device that reads out and plays back the stored music data as appropriate is becoming widespread (see, for example, Patent Document 1). By using this music playback device, a user can perform a complicated operation of exchanging a CD or the like only by designating music data to be listened to from a huge number of music data stored in the hard disk device. You can listen to any music without. Further, in this music playback apparatus, the user can specify an appropriate folder and store music data. For example, a folder can be created for each album sold (for each CD). It is also possible to handle the folder as a virtual CD.
JP 2002-278564 A (page 4-6, FIG. 1-7)

  By the way, in the music playback device disclosed in Patent Document 1 described above, a user can arbitrarily set a folder for recording music data, but if there are too many music data to be recorded in one folder, music selection is performed. There was a problem that it was difficult to operate. For example, when one folder is associated with one CD, the folder can be changed for each album name, so the user can listen to music recorded in one album in order. If you want to listen to the music in the next album on the way, you can do a predetermined operation to switch folders. However, if one folder corresponding to the artist name is created or one folder corresponding to all music data is created, the playback target may be switched from the current album to the next album. It cannot be handled by the folder switching operation. At this time, if the contents (contents of the ID tag) of each music data in the folder can be displayed, the music data is selected while viewing the displayed contents and a track jump (for example, one music data per track) However, the operation while confirming the display contents is very complicated, and is difficult to implement with an in-vehicle music playback device or the like.

  The present invention was created in view of the above points, and an object of the present invention is to provide a music playback device that can improve operability during music playback.

  In order to solve the above-described problems, a music playback device according to the present invention reads music data from music data recording means in which music data to be played is recorded together with attached data in units of folders. A music playback processing means for performing music playback, an operating means for accepting a switching operation for switching a folder including music data to be played back, and a music data recording means when a switching operation using the operating means is performed. When two or more folders are included, the folder including the music data to be played is switched, and one music data contained in the folder after the switching is specified as the next playback target, and the music If the data recording means contains only one folder, it will not be played back at that time contained in this folder. Music data other than that searching on the basis of the adjunct data and a music data retrieval means for identifying as the next playback target. As a result, even if a large amount of music data is recorded in one folder, it is possible to display other music data and perform other folder music switching operations without performing a selection operation. Data can be played back, and operability when playing back music data can be improved.

  The music data described above is recorded in the music data recording means in a compressed format, and the music reproduction processing means decompresses the music data read from the music data recording means into uncompressed data and then reproduces the music. It is desirable to do. In particular, when music data is recorded in a compressed format, the number of music data increases, but even in such a case, it can be recorded in one folder simply by instructing folder switching. In addition, it is possible to specify other music data to be reproduced next from the enormous number of music data.

  Further, the above-mentioned attached data includes a search keyword common to one or a plurality of music data, and the music data search means searches when the music data recording means includes only one folder. It is desirable to search for music data to be reproduced next using a keyword. Thereby, music data can be searched using the search keyword, so that the burden of search processing can be reduced.

  Further, the above-mentioned attached data includes a plurality of types of attribute data, and the music data search means pays attention to one attribute data among the plurality of types of attribute data, and becomes a reproduction target at that time. It is desirable to search for music data to be reproduced next by using a content different from the content of the one attribute data corresponding to the existing music data as a search keyword. As a result, when a folder switching operation is performed, other music data having different attributes can be reproduced, so that it is possible to perform music reproduction with a variety of contents.

  The attached data described above includes an album name assigned to each group including a plurality of music data to be sold, and the music data search means includes only one folder in the music data recording means. If included, it is desirable to search for other music data corresponding to another album name different from the album name corresponding to the music data to be played back at that time. In particular, the music reproduction processing means described above is configured to store a plurality of music data corresponding to the same album name as the other album names when the music data searching means searches for music data corresponding to other album names. It is desirable to read out music data in order from the data recording means. As a result, even when music data with different album names is recorded in one folder, it becomes possible to switch the playback order for each album name. A complicated operation such as searching for music data by specifying an album name can be prevented, and operability can be improved.

  Further, the above-mentioned attached data includes the genre of the song corresponding to each of the music data, and the music data search means is the time when the music data recording means contains only one folder. It is desirable to search for other music data corresponding to another genre different from the genre corresponding to the music data to be reproduced in. In particular, the above-described music reproduction processing means sequentially reads a plurality of music data belonging to other genres from the music data recording means when the music data search means searches for music data corresponding to another genre. It is desirable to play music. As a result, even when music data of different genres is recorded in one folder, the playback order can be switched for each genre, and the folders can be switched for each genre, or the music data in the folder can be recorded. It is possible to prevent complicated operations such as searching by specifying a genre, and operability can be improved.

  Hereinafter, a music recording / playback apparatus according to an embodiment to which the present invention is applied will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of a music recording / playback apparatus according to an embodiment. A music recording / reproducing apparatus 100 according to this embodiment shown in FIG. 1 is mounted on a vehicle, and includes a disc player 10, a music data creating unit 12, a hard disk device 14, a music data reading unit 16, a music data reproducing unit 18, and attached data. The reading unit 20, the music data search unit 22, and the operation unit 30 are included.

  The disc player 10 reads out music data recorded on a CD or DVD and data associated with the music data. For example, the disc player 10 outputs uncompressed music data after performing reproduction processing on various types of data recorded on a CD, and various information recorded on a TOC (Table of Content). Is read and output. Normally, an audio device integrated with or separate from the music recording / reproducing device 100 is mounted on the vehicle, and this audio device may be equipped with a disc player for reading music data from a CD or DVD. Therefore, it may be used as the disc player 10 of the music recording / reproducing apparatus 100.

  The music data creation unit 12 performs compression processing on the uncompressed music data output from the disc player 10 to create music data in a predetermined format (for example, MP3 format). In this embodiment, music data compressed in MP3 format is created based on uncompressed audio data output from the disc player 10, but music data in MP3 format has already been recorded on a CD or the like. If music data compressed by a method other than the MP3 format is recorded on a CD or the like, the MP3 format is converted from the music data compressed by a method other than the MP3 format. You may make it produce music data directly. The music data in the MP3 format created by the music data creation unit 12 is recorded in a designated folder in the hard disk device 14 as music data together with attached data read in parallel with the music data from a CD or the like.

FIG. 2 is a diagram showing a data structure of music data recorded on the hard disk device 14. As shown in FIG. 2, the music data of the present embodiment includes “compressed music data” created by compressing music data by the MP3 method for each music and attached data indicating various attribute data related to the music. “ID3 tag information” is included. In this ID3 tag information,
a. "Title" indicating the song title
b. "Artist" indicating the name of the singer who is singing this song or the name of the performer
c. "Album" that represents the album name as a group name that contains multiple songs to be sold
d. Year indicating the announcement year of a song (or an album containing this song) e. “Comments”, which are various types of information that can be arbitrarily added to a song
f. "Genre" that represents genre information (pops, rock, classical music, etc.)
Etc. are included.

  The music data reading unit 16 reads the compressed music data in the music data recorded on the hard disk device 14 in a predetermined order. For example, when a folder to be read is specified, an operation of reading the compressed music data included therein in order from the smallest track number is performed. The music data reproducing unit 18 decompresses the compressed music data of each piece of music read from the hard disk device 14 by the music data reading unit 16 and performs a process of converting the decompressed music data into an analog music signal. . The music signal output from the music data reproduction unit 18 is amplified by a built-in or external amplifier (not shown) and output from a plurality of speakers (not shown) into the vehicle interior.

  The attached data reading unit 20 reads ID3 tag information in the music data recorded on the hard disk device 14. The music data search unit 22 searches for the presence or absence of another folder when an instruction to switch the playback music accompanied by the folder movement is given during playback of the music data, and when the other folder does not exist, Search for other music in the folder corresponding to the music. Details of this search operation will be described later.

  The operation unit 30 is for accepting an instruction to switch the reproduced music accompanied by folder movement, and includes at least a folder UP (up) key and a folder DOWN (down) key operated by the user. The folder UP key is used to give an instruction to move a folder including the music data to be played in a predetermined direction. The folder DOWN key is used to move the folder included in the music data to be played in the opposite direction. It is for giving instructions. The operation unit 30 is also used to designate a folder when recording music data on the hard disk device 14. The user can arbitrarily designate a folder when recording music data. For example, if a new folder is specified for each album, that is, for each CD or DVD, and music data is recorded in the folder, a playback instruction for each album can be given by specifying the folder later. . However, a user who thinks that it is troublesome to specify a new folder each time a CD or the like is replaced is not necessary to specify a new folder each time, that is, use the specified folder only once or in the initial state. It is also possible to record music data corresponding to a plurality of CDs and DVDs using a folder prepared in advance.

  The hard disk device 14 described above is the music data recording means, the music data reading section 16, the music data reproducing section 18 is the music reproduction processing means, the operating section 30 is the operating means, the attached data reading section 20, and the music data searching section 22 are. Each corresponds to music data retrieval means.

  The music recording / reproducing apparatus 100 of this embodiment has such a configuration, and the operation thereof will be described next. FIG. 3 is a flowchart showing an operation procedure of the music recording / reproducing apparatus 100 when the music data recorded on the hard disk device 14 is read and reproduced, and folder movement is instructed using the operation unit 30 during music reproduction. The operation procedure is shown.

  When the power is turned on and the music recording / reproducing apparatus 100 becomes operable, the music data reading unit 16 determines whether or not the user has operated the operation unit 30 to give a reproduction instruction (step 100). If no reproduction instruction is given, a negative determination is made and this determination is repeated. If the user gives a playback instruction, an affirmative determination is made in the determination in step 100, and then the music data reading unit 16 reads the music data in the folder specified in the playback instruction in a predetermined order. The read / music data reproduction unit 18 expands the compressed music data included in the read music data and starts a reproduction process of converting the expanded music data into an analog music signal (step 101). If no folder is specified at the time of playback, the music data in the default folder (for example, the folder with the smallest serial number when managed with a serial number) is read and played. Processing begins. Further, when music data is read from a CD or DVD and recorded on the hard disk device 14, music data with the same album name is continuously recorded. Therefore, when the reproduction order is not changed, the same album is recorded. The reproduction processing of a plurality of corresponding music data is continued.

  Next, the music data reading unit 16 determines whether or not the user has operated the operation unit 30 to instruct the end of the reproduction operation (step 102). When the end of reproduction is instructed, an affirmative determination is made, and after the reproduction process is completed, the process returns to step 100 and the presence / absence determination of reproduction instruction is repeated.

  If the end of playback is not instructed, a negative determination is made in the determination in step 102, and the music data search unit 22 then presses either the folder UP key or the folder DOWN key by the user. It is then determined whether or not folder switching has been instructed (step 103). If no key is pressed, a negative determination is made, and the reproduction end determination in step 102 is repeated. If any key is pressed, an affirmative determination is made in step 103. Next, the music data search unit 22 examines the recorded contents of the hard disk device 14 and determines whether there is a folder other than the folder corresponding to the music data being played back (step 104). If there is another folder, an affirmative determination is made, and after switching the folder to be played back (step 105), the process returns to step 101 to start playing the music data in the folder after switching.

  If no other folder exists, a negative determination is made in the determination in step 104. Next, the music data search unit 22 starts searching in the folder being played back (step 106). Specifically, the attached data reading unit 20 reads the ID3 tag information included in the music data being played and extracts the album name (step 107), and the music data search unit 22 uses the album name as a search keyword. It is determined whether there is music data having an album name other than the extracted album name (step 108). If it exists, after switching the playback target to music data having another album name (step 109), the process returns to step 101 to start playback of the music data after the switching. Further, when there is no music data with another album name (when music data is read and recorded from only one CD or DVD), a negative determination is made in the determination of step 108, and the user is predetermined. Is notified (step 110). For example, it is displayed on the display unit (not shown) that there is no folder or other album to be switched to. Thereafter, the process returns to step 103, and the presence / absence determination of the folder switching instruction is repeated.

  As described above, in the music recording / reproducing apparatus 100 of the present embodiment, even when a lot of music data is recorded in one folder, the contents of each music data are displayed and the folder switching is performed without performing the selection operation. It is possible to reproduce other music data in the folder only by performing an operation, and the operability at the time of music data reproduction can be improved. In particular, when music data is recorded in a compressed format, the number of music data increases, but even in such a case, it can be recorded in one folder simply by instructing folder switching. In addition, it is possible to specify other music data to be reproduced next from the enormous number of music data.

  Further, music data can be searched using the ID3 tag information as attached data as a search keyword, so that the burden of search processing can be reduced. In particular, the attached data includes a plurality of types of attribute data. Focusing on one attribute data, the content differs from the content of one attribute data corresponding to the music data to be played at that time. By searching for the next music data to be played using as a search keyword, other music data with different attributes can be played when a folder switching operation is performed. Playback can be performed.

  Also, when there is only one folder, music data with a different album name differs from the album name corresponding to the music data to be played, so the music data with a different album name is searched for playback processing. Even when data is recorded in a single folder, it is possible to switch the playback order for each album name, change the folder for each album, and record the music data in the folder by specifying the album name. Therefore, it is not necessary to perform complicated operations such as searching, and operability can be improved.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. In the above-described embodiment, the music data is recorded on the hard disk device 14, but the music data may be recorded on a CD, a DVD, a semiconductor memory, or the like. Moreover, although MP3 was demonstrated as an example of a compression system, you may make it record the music data compressed with the other compression system.

  In the above-described embodiment, the music recording / reproducing apparatus 100 has a function of compressing and recording music data, but it may have only a reproducing function. In this case, it is necessary to transfer the compressed music data to the hard disk device 14 by some method. This transfer is performed using a memory card, CD, DVD or the like, or via a communication medium such as the Internet. You may make it carry out using methods, such as a download.

  Further, in the above-described embodiment, when there is only one folder, when switching the folder is instructed, other music data having another album name is searched. You may make it search other music data by making ID3 tag information) into a search keyword. For example, the genre may be used as a search keyword. In this case, when there is only one folder, music data of another genre different from the genre corresponding to the music data to be reproduced is searched for and reproduction processing is performed. As a result, even when music data of different genres is recorded in one folder, it becomes possible to switch the playback order for each genre. There is no need to perform complicated operations such as searching for data by specifying a genre, and operability can be improved.

It is a figure which shows the structure of the music recording / reproducing apparatus of one Embodiment. It is a figure which shows the data structure of the music data recorded on a hard-disk apparatus. It is a flowchart which shows the operation | movement procedure of a music recording / reproducing apparatus in the case of reading and reproducing the music data currently recorded on the hard disk device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Disc player 12 Music data creation part 14 Hard disk device 16 Music data reading part 18 Music data reproduction part 20 Attached data reading part 22 Music data search part 30 Operation part 100 Music recording / reproducing apparatus

Claims (6)

Music data recording means for recording music data to be reproduced together with attached data in units of folders;
Music reproduction processing means for reading out the music data from the music data recording means and performing music reproduction;
An operation means for accepting a switching operation for switching the folder including the music data to be reproduced;
When two or more folders are included in the music data recording unit when the switching operation using the operation unit is performed, the folder including the music data to be reproduced is switched. One music data included in the folder after the switching is specified as a next reproduction target, and when only one folder is included in the music data recording unit, the music data is included in the folder. Music data search means for searching for the music data other than the playback target at that time based on the attached data and specifying it as the next playback target ,
The attached data includes a plurality of types of attribute data,
When the music data recording means includes only one folder, the music data search means pays attention to one attribute data among the plurality of types of attribute data, and becomes a reproduction target at that time. music reproducing device which is characterized that you find the music data to be played back next the corresponding music data have the attribute data of the content different from the content of the first attribute data as a search keyword. In claim 1,
The music data is recorded in the music data recording means in a compressed format,
The music playback apparatus according to claim 1, wherein the music playback processing means performs music playback after decompressing the music data read from the music data recording means into uncompressed data. In claim 1 or 2,
The attached data includes an album name assigned to each group including a plurality of the music data to be sold,
When the music data recording means includes only one folder, the music data search means is a different album name from the album name corresponding to the music data to be played back at that time. A music reproducing apparatus for searching for other music data corresponding to the above. In claim 3,
The music reproduction processing means, when the music data search means searches for the music data corresponding to the other album name, a plurality of the music data corresponding to the same album name as the other album name Is reproduced in order from the music data recording means to perform music reproduction. In claim 1 or 2,
The attached data includes genres of songs corresponding to the music data,
The music data search means corresponds to another genre different from the genre corresponding to the music data to be reproduced at that time when only one folder is included in the music data recording means. A music reproducing apparatus for searching for the other music data. In claim 5,
When the music data search means searches for the music data corresponding to the other genre by the music data search means, the music reproduction processing means retrieves the plurality of music data belonging to the other genre from the music data recording means. A music playback device, wherein the music playback is performed by sequentially reading the music.

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