KR20080022328A - Method of playing audio file for media player and computer-readable medium having thereon program performing function embodying the same - Google Patents

Abstract

A method of reproducing audio files in a media player and a computer readable recording medium recorded with a program embodying the same are provided to reduce the time for searching or reproducing audio files by extracting information of the audio files and providing an interface allowing a user to search through each field. A method of reproducing audio files in a media player comprises the steps of: extracting discrimination information of plural audio files stored in a storage medium(S210); storing the discriminated information on the basis of classification information(S220); providing a user interface for searching files and searching the discrimination information d the file searching information as the classification information; receiving a selection command for the audio files corresponding to searching(S240); and reproducing the selected audio files(S250).

Description

METHOD OF PLAYING AUDIO FILE FOR MEDIA PLAYER AND COMPUTER-READABLE MEDIUM HAVING THEREON PROGRAM PERFORMING FUNCTION EMBODYING THE SAME}

1 is a flowchart of an ID3 tag searching method in a media playback apparatus according to the prior art.

2 is an exemplary flowchart of a method of playing an audio file in a media playback device according to the present invention;

The present invention relates to a method of reproducing an audio file in a media reproducing apparatus and a computer-readable recording medium having recorded thereon a program for realizing the same. Audio file playback on media playback devices that reduce the time required for audio file search and playback by easily searching for and playing back the desired audio file even when multiple audio files are stored by providing an interface that can be searched through A computer readable recording medium having recorded thereon a method and a program for realizing the same.

The most widely used standard or medium for storing audio data is CD-DA (CD-Digital Audio). The CD-DA can store an audio signal of about 74 minutes in the case of a disc having a diameter of 12 cm, for example.

On the other hand, audio data compression technologies such as MP3 (MPEG-1 Audio Layer-III), WMA (Windows Media Audio), AAC (Advanced Audio Coding), and OGG (Ogg Vorbis) have recently been introduced. The capacity can be compressed, for example, about one tenth, and the sound quality is not so degraded. The music recording time is limited to about 74 minutes for one disc in the case of uncompressed audio data by CD-DA, whereas 700 minutes or more can be recorded in one disc in case of compressed audio data. Therefore, if 20 CDs of audio files in a CD-DA format are recorded on a conventional CD disc, audio files having MP3, WMA, AAC, OGG, etc., of such compressed audio formats may have about 1,000 audio files. You can save the file. In addition, when these compressed audio files are stored on DVD discs rather than CD discs, thousands of songs may be recorded.

Audio files in the above-described CD-DA format and files such as MP3, WMA, AAC, and OGG in the compressed audio format have different formats, but all have the commonality as files recording audio data. Devices that can play DA files and MP3 or WMA, AAC, and OGG files are being developed. For example, an MP3 CD player or a DVD player that is currently commercially available may be mentioned.

In the present invention, a playback apparatus capable of playing back a disc-shaped playback medium such as an MP3 CD playback apparatus or a DVD playback apparatus and simultaneously playing back at least one of files of compressed audio format such as MP3 or WMA, AAC, OGG, etc. Referred to as "media playback device". Examples of such a media playback apparatus include a computer apparatus having a playback program including a CD player or a car audio or audio codec in an automobile.

When storing a disc such as a CD or a DVD storing various types of formats and inserting the same into a media playback apparatus The media playback apparatus reads each file during the playback of the disk, extracts information, and then plays back based on the information. .

For example, a process of reading an ID3 tag for performing playback of an audio file in MP3 file format is as follows.

1 is a flowchart of an ID3 tag searching method in a media playback apparatus according to the prior art.

First, when the disc is inserted into the media reproducing apparatus, the disc reading position is moved to an MP3 file corresponding to one song to be played (S110).

When moving to the MP3 file corresponding to the next song, the ID3 tag of the corresponding MP3 file is searched first (S120).

The ID3 tag is information stored in the MP3 file and stores additional information of the MP3 file. ID3 tags have the format of version 1 (ID3v1) or version 2 (ID3v2).

First of all, ID3v1 is recorded in the last 256 bytes of the MP3 file in the form of 30 bytes of song title and 30 bytes of artist information. The tag information that can be stored in the ID3v1 is limited in advance to the title, artist, album, production year, etc., and the length of each tag is also limited. In addition, version 1.1 (ID3v1.1) adds track information to such information, but basically the configuration is the same as that of ID3v1.

The ID3v2 standard has been introduced in order to improve the disadvantage that the limitation of ID3v1, for example, the length of additional information such as a song title or a singer, is limited, and information that can be recorded with a tag is also limited. ID3v2 is set so that the additional information of the MP3 file can be infinitely recorded in units of frames. For example, as a title is written in the title frame of ID3v2 and the album name is recorded in the album name frame, ID3v2 can theoretically have infinite frames, and new frames can be arbitrarily defined and recorded as necessary.

In addition, ID3v2 may include binary data such as an album jacket or a singer's image, and may also include lyrics information, and thus its use is spreading.

In the search for the ID3 tag, it is first checked whether the ID3 tag exists in the front of the file (S130). In other words, version 2, the ID3v2 tag, is located at the beginning of the file, so it is checked to see if the ID3v2 tag is present at the beginning of the file.

 In this case, if the ID3v2 tag exists, it is read (S135), and playback of the MP3 file is started (S140).

If the ID3 tag does not exist in the front of the file in step S130, it moves to the last part of the file and checks whether the ID3 tag is located (S150). In other words, version 1, or version 1.1, that is, ID3v1 or ID3v1.1 tags are located at the end of the file, so it is checked whether an ID3v1 or ID3v1.1 tag exists at the end of the file.

In this case, if an ID3v1 or ID3v1.1 tag exists, it is read (S155) and then moved back to the beginning of the file (S160).

After that, MP3 file playback is started (S140).

The reading and storing of the file are somewhat different depending on the implementation. However, the media reproducing apparatus plays the next song based on the storing of the file.

When the file is played in this manner, the playback start time of the MP3 file is delayed to search for the ID3 tag. In particular, in an MP3 reproducible disc player having a configuration in which file information is read out from a flash memory or the like, rather than reading digital information recorded on a recording medium such as a CD or a DVD through an optical pickup, the MP3 reproducible disc player is recorded on the recording medium. Since the pickup position must be moved to read the file information, a time delay occurs to read the ID3 tag information.

In particular, if it contains ID3v1 or ID3v1.1, move the disc reading position to the end of the MP3 file to read ID3v1 or ID3v1.1, read the ID3v1 or ID3v1.1 tag, and read the disc back to the beginning of the MP3 file. Since the MP3 audio data is reproduced by moving the position, the time taken to start the reproduction increases in response to the increase in the optical pickup movement and the setting time.

As described above, when each file is checked in order to search for a desired audio file, since the ID3 tag search as shown in FIG. 1 is continuously performed, a time delay occurs.

If the user directly saves the disc and stores the MP3 files, for example, is organized in a directory form and classified and stored based on the singer or the music genre or song name, the user can select the desired song based on this. Playback is possible.

However, when this classification is not made or when playing a disc of another person, the process of searching for and playing these stored files is complicated by the above-described process, for example, searching for an ID3 tag. After checking and selecting the file to play, the process of playing it.

Therefore, the user has a disadvantage that it takes a lot of time to play the desired audio file.

SUMMARY OF THE INVENTION An object of the present invention is to extract information of an audio file such as MP3 in advance and provide an interface for a user to search through each field so that a user can easily search and play a desired audio file even when a plurality of audio files are stored. The present invention provides a method for reproducing an audio file in a media reproducing apparatus which reduces the time required for searching and playing an audio file.

Another object of the present invention is to provide a computer-readable recording medium having recorded thereon a program for realizing each step of the audio file reproduction method in the media reproduction apparatus.

In order to achieve the above technical problem, the present invention provides a method for reproducing an audio file in a media reproducing apparatus, comprising: (a) extracting identification information of a plurality of audio files stored from a media storage medium, and (b) extracting a plurality of extracted audio files; Storing audio file identification information based on the classification information; (c) providing the file search user interface and retrieving the plurality of audio file identification information using the file search information received correspondingly as the classification information; And (d) receiving a selection command for the audio file corresponding to the search, and (e) playing the selected audio file.

The present invention also provides a computer-readable recording medium having recorded thereon a program for realizing each step of the audio file reproduction method in the media reproduction device of the present invention.

Hereinafter, a method of reproducing an audio file in a media reproducing apparatus of the present invention and a computer-readable recording medium recording a program for realizing the same will be described in more detail step by step with reference to the accompanying drawings.

2 is an exemplary flowchart of an audio file playback method in a media playback device according to the present invention.

As shown, first, identification information of a plurality of audio files stored from a media storage medium is extracted (S210).

The media storage medium may be a disc in the form of a CD or DVD, for example. That is, it may be a disc generally used for playback in a device such as a car audio or a CD player.

Or, for example, when there is an audio file reproduction function in a navigation device or an auto PC mounted in an automobile, such audio file reproduction is mainly stored in a nonvolatile memory such as a hard disk or a flash memory.

Thus, the media storage medium may be such a hard disk or nonvolatile memory.

In addition, the stored audio files may be stored in formats such as MP3, WMA, AAC, and OGG. Or in addition, it may be encoded and stored based on various formats used for compressed storage of audio files.

Thereafter, the plurality of audio file identification information extracted in step S210 is stored based on the classification information (S220).

That is, the audio compression file includes various fields for recording additional information. For example, it includes a field in which the title, artist, album, year of production and other additional information of the audio file are recorded.

In operation S220, the extracted information is designated as classification information, and identification information of a plurality of audio files is stored as metadata in response to the classification information.

That is, for example, metadata for each artist may be collected and stored, or metadata for each genre may be collected and stored.

In this way, identification information for a plurality of audio files can be stored based on the classification information to facilitate subsequent audio file retrieval.

In addition, the steps S210 to S220 may be performed for various media storage media. For example, if a plurality of CDs are inserted and played back alternately, once the identification information of the audio file is stored for one CD based on the classification information, if the CD is inserted again, new information is read and stored. There is no need to simply use identification information for a number of pre-stored audio files for the CD.

Therefore, in operation S220, the extracted plurality of pieces of audio file identification information may be stored based on the unique identification information of the media storage medium.

In this case, although not shown after step S220, the method may further include extracting unique identification information of the media storage medium to be reproduced. In a later step, a search may be performed based on a plurality of audio file identification information corresponding to the extracted unique identification information.

After storing a plurality of audio file identification information through steps S210 to S220, a user may try to search for and play an audio file in a media storage medium.

In this case, the media playback apparatus provides a file search user interface to the user and performs a file search based on the file search information received corresponding thereto (S230). In this case, if file search information for searching for an audio file for the singer "SG Wannabe " is received from the user, for example, the stored audio file identification information is searched for as the classification information. Thereafter, a user interface for selecting an audio file corresponding to the retrieved audio file identification information is provided.

Thereafter, the user receives a selection command for a desired audio file from the user (S240).

The file search user interface may provide a user interface for receiving a text input, a user interface for presenting searched audio files in response to the text input, and a user interface for selecting a desired file from among the presented audio files. .

Thereafter, the selected audio file is played (S250).

Through the audio file playback method of the media player according to the present invention, the user can easily search for and play a desired audio file.

The present invention also provides a computer-readable recording medium having recorded thereon a program for realizing each step of the audio file reproduction method in the media reproduction apparatus according to the present invention.

However, a detailed description of the computer-readable recording medium according to the present invention will be omitted since it overlaps with the description of the audio file reproduction method in the media reproducing apparatus according to the present invention with reference to FIG.

Although the configuration of the present invention has been described in detail, it is only for illustrating the present invention, and the protection scope of the present invention is not limited thereto, and the protection scope of the present invention is defined through the description of the claims.

As described above, according to the present invention, a user can search for a desired audio file even when a plurality of audio files are stored by providing an interface through which the user can search through each field by extracting information of an audio file such as an MP3 stored in advance. By simply searching and playing, the time required for searching and playing audio files can be reduced.

Claims (8)

An audio file playback method in a media playback device, (a) extracting identification information of the plurality of audio files stored from the media storage medium; (b) storing the extracted plurality of audio file identification information based on the classification information; (c) providing a file search user interface and searching the plurality of audio file identification information using the file search information received correspondingly as the classification information; (d) receiving a selection command for an audio file corresponding to the search; (e) playing the selected audio file Audio file playback method in a media playback device comprising a. The method of claim 1, And the media storage medium is a disc in the form of a CD or a DVD. The method of claim 1, And the media storage medium is a hard disk or a nonvolatile memory. The method of claim 1, And the audio file is encoded using at least one of the following formats: MP3, WMA, AAC, and OGG. The method of claim 1, And the classification information includes any one or more of a title, an artist, an album, a production year, and additional information of the audio file. The method of claim 1, The file retrieval user interface includes a user interface for receiving a text input, a user interface for presenting searched audio files corresponding to the text input, and a user interface for selecting a desired file among the presented audio files. To play audio files. The method of claim 1, The step (b) includes (b-1) storing the extracted plurality of audio file identification information based on the unique identification information of the media storage medium, After step (b) (f) extracting the unique identification information of the media storage medium to be played More, The step (c) may include: (c-1) providing the file retrieval user interface based on the plurality of audio file identification information corresponding to the extracted unique identification information. Audio file playback method in a media playback device comprising a. A computer-readable recording medium having recorded thereon a program for realizing each step of an audio file playback method in the media playback device according to any one of claims 1 to 7.

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