KR100846558B1 - Apparatus and method for reproducing audio data - Google Patents

Abstract

An audio data reproduction method according to an embodiment of the present invention, the audio data reproduction method comprising the steps of: identifying the attribute information of the audio file based on the attribute information; And converting the identified audio file into decodable data, wherein the attribute information includes extension information of the audio file.

Audio, playback, MP3

Description

Method and device for reproducing audio data {APPARATUS AND METHOD FOR REPRODUCING AUDIO DATA}

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram schematically showing the configuration of an optical recorder equipped with an MP3 playback means as an embodiment of the present invention.

2 is a flowchart illustrating a process of reproducing an MP3 in an optical recorder equipped with an MP3 reproducing unit according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

11 ... 1st disk drive 12 ... 2nd disk drive

13 ... Micom 14 ... FPGA

15 ... MP3 Decoder 16 ... CDDA Decoder

17 ... DAC 18 ... Output

The present invention relates to an audio data reproducing apparatus and an audio data reproducing method.

Today, audio compact discs have become an essential audio medium, with the popularity of compact discs and the explosion of popularity. Also, with the spread of portable compact disc players, music recorded on compact discs can be heard on the go.

Meanwhile, with the advent of the double deck audio compact disc player / recorder, anyone can record their own voice or other compact disc music on a blank compact disc at home without the aid of a computer. You can make your own compact disc.

In addition, with the spread of the Internet environment, music using a computer is conveniently made available through a file in the form of MP3 (one of the high-quality audio compression techniques defined by MPEG1). The MP3 track can be conveniently downloaded and used through a network such as the Internet. Accordingly, a lot of portable MP3 players that can play such MP3 tracks have been widely used.

On the other hand, thanks to the activation of the use of such MP3 tracks, research into an optical record player capable of reproducing an existing audio (CDDA) track and an MP3 track in one device is being actively conducted.

However, such an MP3 track and an existing audio track have different configurations. Therefore, in order to reproduce a track recorded on a disc into which an optical recorder is inserted, the configuration form (attribute) of the track recorded on the inserted disc is determined. You should identify the type of disc inserted and play it back.

On the other hand, in order to play MP3 tracks recorded on each disc that is inserted into a plurality of disc drives in the optical recorder, an MP3 decoder must be provided as many as the number of disc drives. However, in the case of designing the optical recorder equipped with the MP3 decoder as many as the number of the disk drives, the manufacturing cost is high.

In the present invention, in reproducing audio data, management information related to an audio file stored in a storage medium is obtained to obtain attribute information of the audio file from the information, and the attribute information of the audio file stored in the storage medium is identified by the attribute information. It is an object of the present invention to provide a method and apparatus for reproducing audio data in which a reproduction mode according to an audio attribute stored in the storage medium is provided, wherein the attribute information includes extension information of the audio file.

In the present invention, in reproducing the audio data, the attribute of the audio file is identified based on the attribute information, and a reproduction mode for reproducing the identified audio file is determined, wherein the attribute information includes extension information of the audio file. The present invention provides a method and apparatus for reproducing audio data.

An audio data reproduction method according to an embodiment of the present invention, the audio data reproduction method comprising the steps of: identifying the attribute information of the audio file based on the attribute information; And converting the identified audio file into decodable data, wherein the attribute information includes extension information of the audio file.

An audio data reproducing apparatus according to an embodiment of the present invention, comprising: control means for identifying attribute information of an audio file based on attribute information; And processing means for processing the audio file under control of the control means, wherein the control means controls the processing means to convert the identified audio file into decodable data, and the attribute information is audio And extension information of the file.

In the audio data reproducing method according to the present invention, in the identifying step, when the extension information indicates mp3, the corresponding audio file is identified as an MP3 audio file.

In the audio data reproducing method according to the present invention, in the identifying step, when the extension information is information other than mp3, the corresponding audio file is identified as a second audio file instead of an MP3 audio file. do.

In the audio data reproduction method according to the present invention, when the extension information indicates wav, the corresponding audio file is identified as a wave file.

In the audio data reproduction method according to the present invention, the installing may include selecting a decoder according to an attribute of an audio file stored in the storage medium.

In the audio data reproduction method according to the present invention, when the extension information is mp3, an MP3 decoder is selected to decode the MP3 audio file.

In the audio data reproducing method according to the present invention, the selecting may include converting the MP3 audio file into decodable data and outputting the converted data to the MP3 decoder.

In the audio data reproduction method according to the present invention, when the extension information is not mp3, another decoder other than an MP3 decoder is selected to decode the audio file.

In the audio data reproduction method according to the present invention, when the extension information is wav, a wave file decoder is selected to decode the wave file.

In addition, the audio data playback apparatus according to the present invention for achieving the above object,

An audio data reproducing apparatus, comprising: control means for identifying an attribute of an audio file based on attribute information, and determining a reproduction mode for reproducing the identified audio file; And processing means for processing the audio file according to the control of the control means, wherein the control means determines the attribute of the corresponding audio file based on the attribute information including extension information of the audio file. It is characterized by controlling a processing means.

In the audio data reproducing apparatus according to the present invention, when the extension information indicates mp3, the control means identifies the corresponding audio file as an MP3 audio file.

In the audio data reproducing apparatus according to the present invention, the processing means includes a plurality of decoding means, wherein the control means selects the MP3 decoding means for decoding the MP3 audio file.

In the audio data reproducing apparatus according to the present invention, when the extension information is information other than mp3, the control means identifies the corresponding audio file as a second audio file instead of an MP3 audio file. .

In the audio data reproducing apparatus according to the present invention, the processing means includes a plurality of decoding means, wherein the control means selects a second decoding means other than an MP3 decoding means to decode the second audio file. Characterized in that.

In the audio data reproducing apparatus according to the present invention, the control means identifies the corresponding audio file as a wave file when the extension information indicates wav.

In the audio data reproducing apparatus according to the present invention, the processing means includes a plurality of decoding means, wherein the control means selects second decoding means other than MP3 decoding means to decode the wave file. It is done.

In the audio data reproducing apparatus according to the present invention, the apparatus further comprises conversion means for converting the MP3 audio file into decodable data.

In the audio data reproducing apparatus according to the present invention, the apparatus further comprises a digital-to-analog converter for converting the decoded data into an analog signal through the MP3 decoding means.

Also, in order to achieve the above object, the optical recording / reproducing apparatus provided with the MP3 reproducing means includes: a plurality of disc drives into which a disc is inserted; A first control unit for acquiring attribute information of tracks recorded on discs inserted into the plurality of disc drives and performing overall control; A second control unit which receives data of an MP3 track from the first control unit, converts the transferred MP3 track data into a decodable signal, and controls a decoding order of the converted signal; An MP3 decoder for decoding data of the converted MP3 track transmitted from the second control unit and transmitting the decoded signal to the second control unit; A digital analog converter for converting the decoded MP3 track signal transmitted from the second control unit into an analog signal; And an output unit for outputting a signal transmitted from the digital-to-analog converter.

In the optical recording / reproducing apparatus, the first control unit is provided, and each of the plurality of disk drives is provided with a separate first control unit.

The second controller converts the plurality of slave second controllers and the plurality of slave second controllers to convert the data of the MP3 tracks stored in the disks inserted into the plurality of disk drives into decodable signals. It is characterized in that it is composed of a master second control unit for controlling the decoding order for the received signal.

In addition, the slave second controller is characterized in that each of the plurality of disk drives are provided separately.

According to the present invention, it is possible to grasp the attributes of the tracks recorded on the disc inserted into the optical recorder, and to play back the MP3 tracks recorded on the discs inserted into the plurality of disc drives using one MP3 decoder. .

Meanwhile, in the embodiment of the present invention, a case in which the first control unit is configured as 'microcom' and the second control unit is configured as 'FPGA (Field Programmable Gate Array)' designed by the system designer using logical operations will be described. do. However, this embodiment is for convenience of description, and it will be apparent to a designer having ordinary knowledge in the art that the controller can be freely determined within the scope of the technical idea of the present invention.

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

1 is a block diagram schematically showing the configuration of an optical recorder equipped with an MP3 playback means according to the present invention. 1 illustrates a case of a double deck optical recorder equipped with two disk drives.

Referring to Fig. 1, the optical recording / reproducing apparatus provided with the MP3 reproducing means according to the present invention includes a first disc drive (for example, a disc drive for reproduction) 11 into which a disc is inserted, and a second disc drive into which a disc is inserted. (E.g., a recording / playback disc drive) 12, and an attribute for acquiring attribute information of tracks recorded on discs inserted into the first and second disc drives 11 and 12, and performing overall control. A control unit, for example, receives the data of the MP3 track from the microcomputer 13 and the microcomputer 13, converts the data of the transferred MP3 track into a decodable signal, and controls the decoding order of the converted signal. A second controller, for example, an FPGA 14, an MP3 decoder 15 for decoding data of the converted MP3 track transmitted from the FPGA 14, and transmitting the decoded signal to the FPGA 14; my A CDDA decoder 16 which receives data of the CDDA track from 13 and decodes the data of the CDDA track; and a decoded track signal transmitted from the FPGA 14 and the CDDA decoder 16 as analog. And a digital analog converter 17 for converting into a signal and an output unit 18 for outputting a signal transmitted from the digital analog converter 17.

Next, a process of reproducing the MP3 track in the optical recorder equipped with the MP3 reproducing means having the above configuration will be described with reference to FIG. 2 is a flowchart illustrating a process of reproducing MP3 in the optical recorder equipped with the MP3 reproducing means according to the present invention.

Referring to Fig. 2, first, the microcomputer (see 13 in Fig. 1) of the optical recorder acquires the attribute information of the track contained in the inserted disc (step 201).

Here, the microcomputer 13, in grasping the attribute information of the track recorded on the inserted disc, uses the extension information of the track recorded on the disc from TOC (Table Of Contents) information obtained from the inserted disc. Figure out.

For example, if the extension of the track recorded on the inserted disc is "mp3", the track is identified as an MP3 track. If the track of the track recorded on the inserted disc is "wav", the track is identified as a wave track. do.

In addition, in the optical recording / reproducing apparatus, the microcomputer 13 is provided, and each of the first and second disk drives 11 and 12 is provided with a separate microcomputer 13, so that each disk drive 11 ( It may be designed to control the drive for the disc inserted in 12).

On the other hand, when the optical recorder plays back the MP3 track, the data of the MP3 track recorded on the inserted disc is read (step 202). At this time, the data of the MP3 track cannot be decoded by the CDDA decoder 16 because the data format is different from that of the normal CDDA track.

Therefore, the FPGA 14 converts the data of the MP3 track into decodable data and transmits the converted data to the MP3 decoder 15 (step 203). At this time, the FPGA 14 transmits the converted data to the MP3 decoder 15 so that the MP3 tracks from which the converted data is transmitted from any one of the first and second disk drives 11 and 12. According to the recognition, the priority to transmit to the MP3 decoder 15 may be determined.

 Accordingly, the MP3 decoder 15 decodes the converted data of the MP3 track transmitted from the FPGA 14 and retransmits the decoded signal to the FPGA 14 (step 204).

Here, the FPGA 14 may include first and second slave FPGAs for converting data of an MP3 track recorded on a disk inserted into the first and second disk drives 11 and 12 into a decodable signal; The first and second slave FPGAs may be separated and configured as a master FPGA for controlling the decoding order for the converted signal.

In addition, according to the design of the FPGA, the master FPGA for controlling the decoding order includes a function for converting the data of the MP3 track contained in the disc inserted in the first disk drive 11 into a decodable signal, the second disk drive It is also possible to design an optical recorder having a separate slave FPGA having a function of converting data of the MP3 track contained in the disc inserted in (12) into a decodable signal.

In the present embodiment, a double deck using two disk drives has been described as an example. However, when a plurality of disk drives are used, the slave FPGAs may be designed to be provided separately for each of the plurality of disk drives.

Meanwhile, the FPGA 14 transmits the decoded MP3 track signal to the digital analog converter 17. Accordingly, the digital-to-analog converter 17 converts the decoded MP3 track signal into an analog signal and outputs it through the output unit 18, so that playback of the MP3 track can be performed (step 205).

As described above, the optical recording / reproducing apparatus provided with the MP3 reproducing means according to the present invention grasps the attributes of tracks recorded on the disc which is inserted into the optical recording / reproducing apparatus, and uses the single MP3 decoder to input the plurality of disc drives The advantage is that MP3 tracks recorded on the disc can be played normally.

In addition, as one MP3 decoder is used to play MP3 tracks recorded on discs inserted into a plurality of disc drives, the manufacturing cost of the optical recorder can be lowered.

Claims (16)

In the audio data playback method, Identifying attribute information of the audio file based on the attribute information; And If the identified audio file is an MP3 file, converting it into decodable data by an MP3 decoder; wherein the attribute information includes extension information of an audio file. The method of claim 1, And when the extension information indicates mp3, identify the audio file as an MP3 audio file. The method of claim 1, And when the extension information is information other than mp3, identify the audio file as a second audio file instead of an MP3 audio file. The method of claim 1, And when the extension information indicates wav, identify the audio file as a wave file. The method of claim 1, And selecting a decoder according to attribute information of the audio file. The method of claim 5, wherein And when the extension information is mp3, select an MP3 decoder to decode an MP3 audio file. The method of claim 5, wherein And when the extension information is not mp3, select a decoder other than an MP3 decoder to decode the audio file. The method of claim 8, And recognizing the audio file as a wave file and selecting a wave file decoder when the extension information is wav. In the audio data reproducing apparatus, Control means for identifying attribute information of the audio file based on the attribute information; And Processing means for processing the audio file according to the control of the control means; The control means controls the processing means to convert the identified audio file into a decodable data in an MP3 decoder when the identified audio file is an MP3 file, And the attribute information includes extension information of an audio file. The method of claim 9, And the control means identifies the audio file as an MP3 audio file when the extension information indicates mp3. The method of claim 9, And the control means identifies the audio file as a second audio file instead of an MP3 audio file when the extension information is information other than mp3. The method of claim 9, And the control means identifies the audio file as a wave file when the extension information indicates wav. The method of claim 9, And said processing means comprises a decoder selected by said control means in accordance with attribute information of said audio file. The method of claim 13, And the control means selects an MP3 decoder to decode an MP3 audio file when the extension information is mp3. The method of claim 13, And the control means selects a decoder other than an MP3 decoder to decode the audio file when the extension information is not mp3. The method of claim 15, And the control means recognizes the audio file as a wave file and selects a wave file decoder when the extension information is wav.

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