KR100514004B1 - System and method for selecting play using portable digital audio player - Google Patents

Abstract

A storage module for storing audio files received from an external file or folder unit, a list providing module for providing a list of files or folders stored in the storage module, and information about a file or folder selected by the user from the list. And a play list generation module for generating a playlist by extracting from the corresponding area, a play module for playing a file registered in the playlist or a file in a folder, and a control module for controlling the functions of the respective modules. An optional playback system applied to an audio device is disclosed.

Description

Selective playback system and method for portable digital audio device {System and method for selecting play using portable digital audio player}

The present invention relates to a selective playback system and method applied to a portable digital audio device, and more particularly to a file or folder selected by a user arbitrarily selecting a file or folder stored in a storage medium of the portable digital audio device. A selective playback system and method applied to a portable digital audio device capable of playing back.

In general, a file system of various storage media includes a directory entry area in which information about a file, such as a file size and a cluster number, is stored, and a file information in which information about a file (cluster) is stored. It is divided into a File Allocation Table (FAT) area and a data area in which files are actually stored.

In the conventional portable digital audio device, since a directory entry is used as a playlist, the playback order of the files is generally determined according to the storage order in the directory entry. In order to change the playback order, the directory is added with a random function. You can change the playback order within the entry.

In this way, even when the random function is added, only the playback order can be changed, so that the files stored in the storage medium of the portable digital audio device are sequentially displayed in the playback order, similarly to the method of using a directory entry as a playlist. Play it.

In addition, recently, as the storage medium of the portable digital audio device has increased in size, the number of files that can be stored increases, thereby supporting a folder function for dividing files into folders, which also plays all folders in a playback order. .

In order to modify the files stored in the storage media of the portable digital audio device, it is difficult to edit the files without the PC because the unwanted files must be deleted and the files to be added must be downloaded and edited. Due to its characteristics, there is a difficulty that cannot be edited.

Human emotions change from time to time, and the type of music to be listened to varies depending on the mood or condition at the time. Since a conventional portable digital audio device has only one playlist, the user's selection range is reduced, and the music that he does not want to listen to is changed. There is an inconvenience to listen together.

Moreover, such inconveniences are aggravated by the increase in capacity of the storage medium.

Accordingly, the present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a portable digital audio device with a playlist composed of songs selected by the user, whereby the user can select and listen to only the music to be listened to. The present invention seeks to provide a portable digital audio device.

Other objects and features of the present invention will be more clearly understood through the preferred embodiments described below.

According to an aspect of the present invention, a storage module for storing an audio file received from an external file or folder unit, a list providing module for providing a list of files or folders stored in the storage module to a user, a file selected by the user from the list or A playlist generation module for generating a playlist by extracting information about folders from a corresponding area of the storage module, a playback module for playing a file registered in the playlist or a file in a folder, and a control module for controlling the functions of each module. Disclosed is a selective playback system applied to a portable digital audio device comprising:

In addition, the corresponding area of the storage module includes a directory entry area in which information about all files stored in the storage module is stored, a designated folder information area in which information on a folder designated by a user is stored, and information on a file designated by a user. Includes the specified file information area where.

According to another aspect of the present invention, a storage module for storing audio files, a list providing module for extracting a list of audio files and providing them to a user, and a playlist generation module for generating a playlist by extracting audio files according to a user's selection The present invention is applied to an optional playback system applied to a portable digital audio device comprising a playback module for playing a file of a playlist, and a control module for controlling the functions of the modules. Extracting a playlist from the corresponding area by the play mode selected by the user; providing a list of designated folders or designated files registered in the playlist by the list providing module, optionally designated folders by the user, or The step in which the specified file is set or released, the designated folder When the further or designated file is set or released, the information of the corresponding area is modified, and the playlist generation module re-extracts the playlist according to the modified information, and the playback module sequentially assigns files or designated files in the designated folder by the playlist. Disclosed is a selective playback method applied to a portable digital audio device comprising the step of playing a file.

The reproduction mode also includes a basic reproduction mode, a designated folder reproduction mode, and a designated file reproduction mode, and the corresponding area includes a directory entry area, a designated folder information area, and a designated file information area.

Preferably, the playlist is extracted from the directory entry area if the playback mode is the basic playback mode, from the designated folder information area if the playback mode is the designated folder playback mode, or from the designated file information area if the playback mode is the designated file playback mode. Can be.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the functional configuration of a selective playback system according to the present invention.

The control module 100 controls the functions of the storage module 200, the list providing module 300, the playlist generation module 400, and the playback module 500.

The storage module 200 stores digital audio files received from the outside by a user (for example, connected to a PC and downloaded from the Internet or a hard disk) in units of files or folders.

The list providing module 300 provides a list of files or folders stored in the storage module 200 to the user, and is preferably provided to the user in a form similar to a window explorer of a PC.

The playlist generation module 400 selects a folder or a file to be played by the user from the list when the list of files or folders is provided to the user by the list providing module 300. In this case, the file or folder selected by the user is selected. To create a playlist.

The playback module 500 plays back files in a file or folder registered in the playlist generated by the playlist generation module 400.

2 is a block diagram illustrating a file system according to the present invention.

Various storage media, such as a hard disk (HDD), have a different storage method according to an operating system (OS), and a storage system used by the operating system to store files is called a file system 600.

As each data is stored in the storage module 200 by the file system 600, as is generally known, the file system 600 includes a directory entry area 622, a file allocation table area 624, and a data area. 626, and in a preferred embodiment of the present invention, it further includes a designated folder information area 642 and a designated file information area 644.

According to an embodiment of the present invention, the directory entry area 622, the file allocation table area 624, and the data area 626 are called the real area 620, and the designated folder information area 642 and the designated file information. Region 644 is referred to as virtual region 640.

The directory entry area 622 stores information about all files stored in the storage module 200.

The file allocation table area 624 stores information about a location (cluster) in which the file is stored, and can be regarded as a kind of index table for the file.

The data area 626 is an area where a file is actually stored. The data area 626 is divided into a minimum unit (cluster) of storage, and the file is stored.

The designated folder information area 642 stores information about the designated folder selected by the user for playback from the list of folders provided to the user by the list providing module 300.

The designated file information area 644 stores information about the designated file selected by the user for playback from the list of files provided to the user by the list providing module 300.

Briefly looking at the process of reading a specific file stored in the storage module 200 by the file system 600, a command to load the corresponding file stored in the storage module 200 from the control module 100 is issued, the directory entry area It is determined whether the file is the same as the file based on the name, capacity, and storage date of the file stored in 622.

Read information about the file from the directory entry area 622 based on the cluster number of the head of the retrieved file, and locate the file based on the cluster number of the head and the second cluster number stored in the file allocation table area 624. Figure out.

In the data area 626, data scattered and stored in a plurality of clusters are connected to each other to form a single file, and the file configured as described above is provided to the module to be processed by the control module 100.

Although a method of importing information about a file stored in the directory entry area 622 has been described, information on a designated folder and a designated file stored in the designated folder information area 642 and the designated file information area 644 are described. Can also be recalled in the same way.

3 is a flowchart for explaining a selective playback method according to the present invention.

A user using the selective playback system applied to the portable digital audio device according to the present invention selects one of the basic playback mode, the designated folder playback mode, and the designated file playback mode (step S10).

Here, it is assumed that there is a history that the user has selected the designated folder and the designated file through the portable digital audio device, so that there is a designated folder or the designated file stored in the designated folder information area 642 and the designated file information area 644. If there is no previously used history, a message indicating that there is no designated folder or designated file can be displayed.

If the user selects the basic playback mode, the playlist generation module 400 extracts the playlist from the directory entry area 622 (step S14), and if the designated folder playback mode is selected, the designated folder information area 642. In step S12, the playlist is extracted from the designated file information area 644 (step S16).

Provide the user with a list of designated folders registered in the playlist extracted by the list providing module 300 to ask the user whether there are folders to be set or released in addition to the designated folders (steps S 18 to S20), and the user designates them. When the folder is modified, the modified contents are stored in the designated folder information area 642 (step S22).

In addition, by providing a list of designated files to the user, asking whether there is a file to be set or released in addition to the designated file (steps S 18 to S24), and when the user modifies the designated file, the designated file information area 644 is modified. The stored contents are stored (step S26).

When the contents of the designated folder information area 642 and the designated file information area 644 are modified, the user is provided with a list of the designated folder or the designated file again (step S18).

If the designated folder or the designated file no longer needs to be modified, the user's intention is changed to ask whether or not to change the playback mode (step S28), and if the playback mode is to be changed, the playback mode is selected (step S10). If the user wants to proceed without changing the playback mode, the user is asked whether or not playback is to be started (step S30).

The user determines whether to start playback, and if it is desired to play, files or designated files in the designated folder registered in the playlist by the corresponding playlist are sequentially played by the playback module 500 (step S32), If the intention is changed and the playback is not desired, the playback is stopped (step S36).

In addition, when the intention to change the playback mode is input from the user during playback, the process returns to the step of selecting the playback mode (step S10) and the same process is repeated.

The selective playback system and method applied to the portable digital audio device according to the present invention can be applied to all portable digital audio devices including MP3 players.

Although the above has been described based on the preferred embodiment of the present invention, it can be appropriately changed or modified by those skilled in the art without departing from the scope of the present invention. It is natural that such changes or modifications fall within the scope of the present invention without departing from the spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims of the patent described below.

As described above, the selective playback system and method applied to the portable digital audio device according to the present invention can select a respective playback mode and provide a search window similar to a window explorer to the user's intention. Accordingly, it is possible to easily select a file or folder to be played, and there is an advantage of providing file management in a portable digital audio device using a large storage medium.

In addition, since each playlist is provided, the user can select and listen to only the songs he / she wants to listen to by holding his or her own music list in the portable digital audio device even when not connected to the PC, and provides the user with various music listening methods. There is an advantage to this.

Moreover, even if you do not delete the file, you can choose not to play the file, so you can eliminate the inconvenience of having to download it again later if you do not want to listen to the specific file stored in the middle of several files. There is an advantage to that.

1 is a block diagram showing the functional configuration of a selective playback system according to the present invention.

2 is a block diagram illustrating a file system according to the present invention.

3 is a flowchart for explaining a selective playback method according to the present invention.

Claims (5)

delete delete A storage module for storing an audio file, a list providing module for extracting a list of the audio file and providing the same to a user, a playlist generation module for generating a playlist by extracting the audio file according to a user's selection, and a file of a playlist Applied to an optional playback system applied to a portable digital audio device consisting of a playback module to play, a control module to control the functions of each module, Selecting a play mode by the user; Extracting, by the playlist generating module, a playlist from a corresponding region by the play mode selected by the user; Providing, by the list providing module, a list of designated folders or designated files registered in the playlist to the user; Selectively setting or releasing the designated folder or designated file by the user; Modifying the information of the corresponding area when the designated folder or the designated file is set or released, and replaying the playlist by the playlist generating module according to the modified information; Playing the file or the designated file in the designated folder sequentially by the play module by the playlist; The playback mode includes a basic playback mode, a designated folder playback mode, a designated file playback mode, and the corresponding area includes a directory entry area, a designated folder information area, and a designated file information area, The playlist is extracted from the directory entry area if the play mode is a basic play mode, and extracted from the designated folder information area if the play mode is a designated folder play mode, and the designated file if the play mode is a designated file play mode. A selective playback method applied to a portable digital audio device, characterized in that it is extracted from an information area. delete delete