KR20040064956A - Method for reproducing select audio file having directory structure - Google Patents

Abstract

PURPOSE: A method for selectively reproducing an audio file having a directory structure is provided to generate a multi-level directory menu screen, and to automatically read/reproduce the first MP3 file included in a sub directory of the lowest level designated by a user, so that the user can simply select desired directories. CONSTITUTION: A system reads navigation information related to a directory structure from a recording medium where plural audio data files having the directory structure are recorded(Step1). The system generates/displays a multi-level directory menu screen such that a user can sequentially select desired directories, in reference to the read navigation information(Step2). The system reads/reproduces an audio data file included in a sub directory of the lowest level selected through the displayed directory menu screen(Step3).

Description

{Method for reproducing select audio file having directory structure}

The present invention relates to an audio file selection and playback method having a directory structure for outputting and displaying a multi-level directory menu screen on an audio device such as an MP3 player, so that a user can easily select and play a desired audio data file. It is about.

Recently, an audio device such as an MP3 player capable of reproducing high quality audio data for a long time has been widely used and commercialized. For example, the MP3 player records audio song data compressed in an MPEG manner, that is, an MP3 file. A stored flash memory may be included, or an optical disk such as 'MP3-CD' may be inserted and seated.

On the other hand, in the MP3 file, in addition to the audio song data, various additional information about the audio song, for example, title information (Title_Info) and singer information (Singer_Info), etc., for the audio song are recorded as tag information. Can be.

In addition, the MP3 player retrieves and reads tag information of an MP3 file recorded on an optical disc such as the MP3-CD, reads and displays additional information for each audio song, and then selects one arbitrary audio song selected by the user. The tag information of the MP3 file being read or played back or retrieved is searched and read, so that the user can easily identify additional information on the audio song.

However, on an optical disc such as a general MP3-CD, hundreds or more MP3 files can be recorded and stored, so that additional information such as the song name for each audio song can be manually added in order to select and designate any one audio song desired by the user. After confirming the search, the user needs to select and designate the desired audio song, and thus, there is a problem that it takes a long time to feel uncomfortable to select the audio song.

Accordingly, the present invention was created to solve the above problems, and generates and displays a multi-level directory menu screen for allowing a user to sequentially select and specify a directory including a desired audio data file. It is an object of the present invention to provide a method for selecting and playing an audio file having a directory structure for reading and playing back audio data files included in a subdirectory of the lowest level selected by a user through a directory menu screen.

1 illustrates a configuration of an audio device to which an audio file selection reproduction method according to the present invention is applied.

2 illustrates a configuration of an MP3 file to which the present invention is applied.

3 and 4 show navigation information on a directory structure of an optical disc to which the present invention is applied;

5 illustrates an embodiment of a root directory structure of an optical disc according to the present invention in the form of a tree.

6 illustrates menu screens that are sequentially output and displayed by an audio file selection reproduction method having a directory structure according to the present invention.

※ Explanation of code for main part of drawing

10: optical disc 11: optical pickup

12: playback system 13: micom

14 memory 15 liquid crystal display

The audio file selection reproduction method having a directory structure according to the present invention for achieving the above object is to read the navigation information related to the directory structure from a recording medium in which a plurality of audio data files having a directory structure are recorded and stored. Stage 1; Generating and displaying a multi-level directory menu screen for sequentially selecting and designating a desired directory by referring to the read navigation information; And reading and reproducing the audio data file included in the subdirectory of the lowest level selected and selected through the displayed directory menu screen.

In addition, the audio file selection reproduction method having a directory structure according to the present invention comprises the steps of: reading navigation information related to the directory structure from a recording medium on which a plurality of audio data files having a directory structure are recorded; Displaying a directory by referring to the read navigation information; And playing the first audio data file included in the directory when selecting the displayed directory.

Hereinafter, a preferred embodiment of an audio file selection reproduction method having a directory structure according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a configuration of an audio device to which an audio file selection and reproduction method according to the present invention is applied. For example, in an MP3 player in which an optical disc such as 'MP3-CD' is inserted and seated, The pickup 11, the playback system 12, the microcomputer 13, the memory 14, the liquid crystal display 15, and the like may be included.

On the other hand, in the MP3 file recorded on the optical disc 10 such as the MP3-CD, the header information, the MP3 audio data, and the tag information are recorded as shown in FIG. The tag information may include and record title information (Title_Info) corresponding to an audio song name and playback time, and singer information (Singer_Info) corresponding to a singer name and a singer history.

In addition, a plurality of MP3 files recorded and stored on the optical disc 10 may have a directory structure. As illustrated in FIG. 3, the directory structure for MP3 files may include 'Primary Volume Descriptor (PVD) information'. It is defined by navigation information recorded in 157 to 190 'bytes.

For example, the total data length, root position, time, file flag, file unit size, interleave, volume sequence number, file ID length, and the like are recorded in the '157 to 190' bytes of the PVD information. In the root directory, the current position, the upper level position, the position and size of each directory, and the position and size information of each file are recorded.

In addition, the general directory under the root directory includes the current location, the upper level location, and the directory location and size, and file location and size information. The current location and the parent directory are also included in the subdirectory below the general directory. Level location, directory location and size, and file location and size information are recorded and included.

Meanwhile, as shown in FIG. 4, the synchronization information, the header information, and the sub-header information are sequentially recorded and recorded in the navigation information, for example, the root directory record, for the directory structure recorded and managed on the optical disc 10. After this, the current directory record, the high level directory record, the next directory record, and the directory name information are recorded.

Accordingly, the microcomputer 13 reads the navigation information recorded on the optical disc 10, downloads the navigation information to the memory 14, and then refers to the navigation information, and the plurality of MP3 files recorded on the optical disc. Determining and recognizing the directory structure for the, for example, the directory structure that is determined and recognized through the above process, as shown in Figure 5, recorded as including a plurality of general directories under one root directory, Six sub-directories may be recorded under each general directory, for example, under the fourth directory DIR 4.

In addition, a plurality of MP3 files may be included and recorded in a fifth subdirectory Sub-DIR 5 of the six subdirectories, and the microcomputer 13 has an optical disc having the directory structure as described above. When a user inputs a predetermined key, for example, a directory selection menu key, a JPEG image of a folder shape previously stored in the memory 14 is read out, as shown in FIG. After generating the directory menu screen of the first step (Step 1), the output is displayed through the liquid crystal display (15).

In this case, as shown in FIG. 6, the liquid crystal display 15 includes a 'ROOT' menu item that can directly return to the root directory, a 'Current' menu item for indicating the current directory, and a root directory. A plurality of general directories in may be respectively displayed as JPEG images in a folder shape, and arrow-shaped menu buttons for selecting a screen display of a Prev / Next page may be displayed together.

In addition, in the microcomputer 13, when the user selects and designates the fourth directory DIR 4 under the root directory through the directory menu screen of the first step, the microcomputer 13 has a first directory under the fourth directory. Folder-shaped JPEG images of the sixth to sixth subdirectories Sub-DIR 1 to 6 are read out from the memory, and as shown in FIG. 6, the subdirectory menu screen of the second step (Step 2) is opened. After generating, the output is displayed through the liquid crystal display 15.

In addition, in the microcomputer 13, when the user selects and specifies the fifth subdirectory Sub-DIR 5 through the subdirectory menu screen of the second step, a plurality of sub-directories below the fifth subdirectory. Among the MP3 files, the first MP3 file (MP3 File 1) is read and reproduced. At this time, the microcomputer 13 searches for and checks tag information included in the first MP3 file, and checks the audio song name and As shown in Fig. 6, the reproduction time information is output and displayed in the directory menu screen of the third step (Step 3), so that the user can easily identify the audio song currently being reproduced.

For reference, the menu screen outputted as described above may further include and display additional information of various shapes or types. The present invention may be applied to various other recording media and audio devices other than an optical disc such as an MP3-CD. Applicable

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

The audio file selection reproducing method having the directory structure according to the present invention constituted and constructed as described above reads navigation information related to the directory structure from an optical disc on which a plurality of MP3 files having a directory structure are recorded and downloaded into the device. After that, the multi-level directory menu screen for generating and displaying the user's desired directory sequentially is created, and the first sub-directory included in the lowest level selected by the user through the multi-level directory menu screen is displayed. By automatically reading and playing MP3 files, users with audio devices such as MP3 players can easily select the directory they want through multi-level user menu screens, and place them in the lowest level subdirectory. This is a very useful invention that makes it easier to read and play the included MP3 files.

Claims (6)

Reading out navigation information related to the directory structure from a recording medium having a plurality of audio data files having a directory structure recorded thereon; Generating and displaying a multi-level directory menu screen for sequentially selecting and designating a desired directory by referring to the read navigation information; And And reading out and reproducing the audio data file included in the subdirectory of the lowest level selected and selected through the displayed directory menu screen. The method of claim 1, The first step is a method for selecting and reproducing an audio file having a directory structure, wherein the navigation information related to the directory structure is read from the optical disc on which a plurality of MP3 files having a directory structure are recorded and downloaded into the device. The method of claim 1, In the second step, the directory menu screen is displayed to generate and display a directory menu screen including a folder shape that can be sequentially selected and designated from the root directory to the lowest level subdirectory with reference to the read navigation information. How to play audio file selection. The method of claim 1, The method of claim 3, wherein the first MP3 file included in the lowest level subdirectory selected by the user is read and reproduced through the displayed directory menu screen. The method of claim 4, wherein In the step 3, the tag information of the MP3 file to be read and reproduced is searched and confirmed, and at least one of the audio song name or the playing time information is outputted and displayed. Reading out navigation information related to the directory structure from a recording medium having a plurality of audio data files having a directory structure recorded thereon; Displaying a directory by referring to the read navigation information; And And reproducing the first audio data file included in the directory when the displayed directory is selected.