Abstract:
A method of reproducing an audio file includes: applying a reproducing mode established based on an attribute information; obtaining at least a part of the audio file under the established reproducing mode; and determining whether the audio file is reproducible under the established reproducing mode by checking whether the part of the audio file constructs a specific format stream corresponding to the applied reproducing mode.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
   This application is a Continuation of application Ser. No. 11/199,150, filed on Aug. 9, 2005, now U.S. Pat. No. 7,158,456 which is a Continuation of application Ser. No. 09/951,210, filed on Sep. 11, 2001, now U.S. Pat. No. 7,050,376, for which priority is claimed under 35 U.S.C. § 120. This application also claims priority under 35 U.S.C. § 119(a) on patent application Ser. No. 54776/2000 filed in Korea on Sep. 19, 2000, Patent Application No. 54777/2000 filed in Korea on Sep. 19, 2000, Patent Application No. 54778/2000 filed in Korea on Sep. 19, 2000, and Patent Application No. 58501/2000 filed in Korea on Oct. 5, 2000. The entire contents of all of the above-identified applications are hereby incorporated by reference. 

   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to an optical disc player, and more particularly to an optical disc player and a method for reproducing thereof, which enable discriminates a kind of an inserted disc at the optical disc player. 
   2. Description of the Related Art 
   As a compact disc player has an immense popularity among many, an audio compact disc also has been growing to a key audio medium based on its excellent sound quality. In addition, since portable compact disc players are widely supplied, everyone is able to listen to a lot of music through portable compact disc players anywhere. 
   Meanwhile, as a double deck type audio compact disc player is now available, anyone can make his own compact discs by recording his voice or dubbing his favorite music from other compact discs, all without a computer operation. 
   In addition, through the Internet, it became easier for people to listen to music on a computer, where a number of music is saved in MP3 files. The MP3 means the audio compression technology of a high sound quality standardized in MPEG1. People usually download MP3 files or music through a network such as the Internet. Accordingly, portable MP3 file displayers for reproducing these MP3 files or music have been widely supplying to the markets. 
   Meanwhile, the study of optical disc players, which is reproducing the audio and MP3 files or music at one player, have been actively developing in the field of activating a utilization for the MP3 file or music. 
   However, the MP3 and the audio files and music have different data formation and construction. Accordingly, the optical disc players have to check the file formation and construction for inserted disc and perform a suitable reproducing process according to the checking result that of discriminating the disc kind in order to normally reproduce the files or music recorded onto the inserted disc by the optical disc player. 
   SUMMARY OF THE INVENTION 
   It is, therefore, an object of the present invention to provide an optical disc player and a method for reproducing thereof, which can discriminate a kind of inserted disc with the audio file disc, the MP3 file disc, and the general data file disc and normally performs the reproducing operation for the files or music recorded onto the inserted disc. 
   To achieve the above and other objects, there is provided according to an embodiment a method of reproducing an audio file, comprising: applying a reproducing mode established based on an attribute information; obtaining at least a part of the audio file under the established reproducing mode; and determining whether the audio file is reproducible under the established reproducing mode by checking whether the part of the audio file constructs a specific format stream corresponding to the applied reproducing mode. 
   In another aspect of the present invention, an apparatus for reproducing an audio file, as embodied, comprises: a mode establishing controller for establishing a reproducing mode based on an attribute information; a reader for obtaining at least a part of the audio file under the established reproducing mode; a checking controller for determining whether the audio file is reproducible under the established reproducing mode by checking whether the part of the audio file constructs a specific format stream corresponding to the applied reproducing mode. 
   Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The above objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which: 
       FIG. 1  is a block diagram illustrating a construction of an optical disc player which can reproduce an MP3 file or music according to the present invention; 
       FIG. 2  is a flow chart illustrating the state of discriminating a kind of an inserted disc at an optical disc player in which a method of discriminating the optical disc according to the present invention is applied; 
       FIG. 3  is a flow chart illustrating the state of discriminating a general text data and an MP3 data recorded onto an inserted disc at an optical disc player in which a method of discriminating the optical disc according to the present invention is applied; 
       FIG. 4  is a flow chart illustrating the state of reproducing an optical disc according to a track attribution recorded onto an inserted disc at an optical disc player in which a method of discriminating the optical disc according to the present invention is applied; 
       FIG. 5  is a flow chart illustrating the state of categorizing and reproducing tracks of an inserted disc by an attribution unit at an optical disc player in which a method of discriminating the optical disc according to the present invention is applied; 
       FIG. 6  illustrates a concept of numbering MP3 tracks of an inserted disc at an optical disc player in which a method of discriminating the optical disc according to the present invention is applied; 
       FIG. 7  illustrates the other concept of numbering MP3 tracks of an inserted disc at an optical disc player in which a method of discriminating the optical disc according to the present invention is applied; 
       FIG. 8  illustrates the state of a screen displayed on a displaying section in an MP3 stop mode at an optical disc player in which a method of discriminating the optical disc according to the present invention is applied; 
       FIG. 9  illustrates the state of a screen displayed on a displaying section in an MP3 play mode at an optical disc player in which a method of discriminating the optical disc according to the present invention is applied; 
       FIG. 10  is a block diagram illustrating a construction of an optical disc player including an MP3 reproducing means according to the present invention; and 
       FIG. 11  is a flow chart illustrating the state of reproducing an MP3 file at an optical disc player including an MP3 reproducing means according to the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, same drawing reference numerals are used for the same elements even in different drawings. The matters defined in the description such as a detailed construction and elements of a circuit are nothing but the ones provided to assist in a comprehensive understanding of the invention. Thus, it is apparent that the present invention can be carried out without those defined matters. Also, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. 
     FIG. 1  is a block diagram illustrating a construction of an optical disc player which can reproduce an MP3 file or music according to the present invention. 
   With reference to  FIG. 1 , the optical disc player of the present invention includes a disc  101  for receiving a disc; a disc discrimination section  102  for discriminating an attribution of the file or music recorded onto the disc inserted into the disc  101 ; a mi-com  103  for controlling an overall operation of the optical disc player; an audio reproducing section  104  for reproducing an audio file or music provided from the disc discrimination section  102 ; an MP3 reproducing section  105  for reproducing an MP3 file or music provided from the disc discrimination section  102 ; and an output section  106  for outputting output signals provided from the audio reproducing section  104  or the MP3 reproducing section  105 . 
   Now, a process for discriminating a kind of an inserted disc at the optical disc player will be explained referring to the  FIG. 2 .  FIG. 2  is a flow chart illustrating the state of discriminating the kind of an inserted disc at the optical disc player in which a method of discriminating the optical disc according to the present invention is applied. 
   First, the disc discrimination section  102  obtains the TOC (Table Of Content) information of the inserted disc  101  ( 201  step). The TOC information means that of a file or music attribution, a file or music number, each file or music playing time, and each file or music address recorded onto the disc. 
   Meanwhile, the disc discrimination section  102  obtains the attributive information of the inserted disc  101  from the obtained TOC information ( 202  step) after obtaining the TOC(Table Of Content) information of the inserted disc. 
   Here, the disc discrimination section  102  of the optical disc player obtains the attributive information of the file or music recorded onto the inserted disc  101  in a manner that of perceiving the attribution using an extension of the disc file from the TOC information obtained from the inserted disc  101 . 
   For example, if the extension of the inserted disc  101  is “mp3”, the disc discrimination section  102  discriminates the disc file as an MP3 file and then the MP3 reproducing section  105  reproduces the MP3 file. If the extension of the inserted disc  101  is “wav”, the optical disc player discriminates the disc file as an audio file and then the audio reproducing section  104  reproduces the MP3 file. 
   The disc discrimination section  102  discriminates a kind of the inserted disc  101  using the obtained attributive information, and can normally reproduce the file or music recorded onto the disc according to a suitable reproducing method ( 203  step). 
   Meanwhile, the optical disc player can not normally reproduce the file or music if the attribution of the file or music are wrongly recorded onto the tracks in a case that the disc discrimination section  102  obtains the TOC information of the inserted disc and discriminates the kind of the disc using the attributive information of the inserted disc from the obtained TOC information. 
   Now, a process of reproducing the file recorded onto the disc will be explained referring to  FIG. 3  when the attribution of the file or music is recorded by the MP3 formation.  FIG. 3  is a flow chart illustrating the state of discriminating a general text data and the MP3 data recorded onto the inserted disc the an optical disc player in which a method of discriminating the optical disc according to the present invention is applied. 
   First, the disc discrimination section  102  of the optical disc player obtains the TOC (Table Of Content) information of the inserted disc  101  ( 301  step). Subsequently, the disc discrimination section  102  obtains the attributive information of the file or disc recorded onto the inserted disc  101  from the obtained TOC information ( 302  step). 
   In this stage, the disc discrimination section  102  obtains a header information of the file or music if the extension of the file or music is “mp3” recorded onto the inserted disc  101  as a result of obtaining the attributive information of the file or disc at  302  step ( 303  step). Here, the header information can be selectively obtained by the disc discrimination section  102  or the MP3 reproducing section  105  depend upon a designed structure for the optical disc player. 
   For example, the disc discrimination section  102  can forward a command of reproducing the file or music to the MP3 reproducing section  105  if the extension of the file or music is “mp3” as the result of  302  step. Accordingly, the MP3 reproducing section  105  can be constructed to obtain the header information for the forwarded file or music. 
   While, the optical disc player discriminates whether the header information of the file or music includes a normal MP3 stream or not by using the header information of the file or music obtained at  303  step ( 304  step). 
   At this stage, the disc discrimination section  102  not only discriminates the file or music as the MP3 file or music, but also the inserted disc as the MP3 disc, if the header information of the file or music recorded onto the disc includes the normal MP3 stream as the result of  304  step ( 305  step). 
   Here, the discriminating operation is performed during the reproducing time of the other MP3 file or music, when the disc discrimination section  102  discriminates whether the MP3 file or music is normal state or not by using the header information of the file or music obtained from the MP3 reproducing section  105 . 
   Also, the optical disc player can be designed not to effect the reproducing operation for MP3 file or music in view of an overall reproducing conditions even if an objected file or music is an abnormal MP3 file or music even if an objected file or music is an abnormal MP3 file or music, since the discrimination operation is performed during much less than a second and the optical disc player skips the abnormal file or music to a next file or music. 
   Meanwhile, the disc discrimination section  102  discriminates the file or music as the general text data file or music, if the header information of the file or music recorded onto the disc does not include the normal MP3 stream as the result of  304  step ( 306  step). Accordingly, the audio reproducing section  104  or the MP3 reproducing section  105  skips the abnormal file or music and reproduces the next file or music. 
   According to the optical disc player of the present invention, there is provided the advantages that of discriminating the kind of inserted disc with the audio file disc, the MP3 file disc, and the general data file disc and normally performing the reproducing operation for the files or music recorded onto the inserted disc. 
     FIG. 4  is a flow chart illustrating the state of reproducing an optical disc according to a track attribution recorded onto an inserted disc at an optical disc player in which a method of discriminating the optical disc according to the present invention is applied. 
   Now, a method of reproducing the disc at the optical disc player according to the present invention will be explained with reference to  FIGS. 1 and 4 . 
   First, the disc discrimination section  102  of the optical disc player obtains the TOC information of the inserted disc  101  ( 401  step). Subsequently, the disc discrimination section  102  obtains the tracks recorded onto the inserted disc  101  with an audio track, an MP3 track, and so on from the obtained TOC information at  401  step ( 402  step). 
   In this stage, the disc discrimination section  102  obtains the attribution of each track by referring the extension information of each track from the obtained TOC information. For example, the disc discrimination section  102  discriminates the object track as the audio tracks if the track extension is “wav”, and as the MP3 tracks if the track extension is “mp3”. 
   Meanwhile, the optical disc player establishes a reproducing mode according to the track attribution recorded onto the inserted disc  101 , and reproduces the disc tracks ( 403  step). At this time, the optical disc player performs the reproducing operation according to the established reproducing mode and the track attribution recorded onto the disc. 
   Now, the operation of reproducing the inserted disc onto the optical disc player will be explained for each case. 
   1. A case that the reproducing mode of the optical disc player is established in an MP3 off mode. 
   a1. A case of merely recording the audio tracks onto the inserted disc
         If the user inputs a play key, the optical disc player reproduces from an audio track number  1 .   If the user inputs a random selection key, the optical disc player selectively reproduces the audio track.   If the user inputs a digit(s), the optical disc player reproduces the audio track corresponding to the corresponding digit, or reproduces from the audio track number  1  with displaying “input error message” if the audio track number corresponding to the number is not exist.       

   b1. A case of recording both the audio and the MP3 tracks onto the inserted disc
         If the user inputs the play key, the optical disc player reproduces from an audio track number  1 .   If the user inputs the random selection key, the optical disc player selectively reproduces the audio track.   If the user inputs the digit(s), the optical disc player reproduces the audio track corresponding to the corresponding digit, or reproduces from the audio track number  1  with displaying “input error message” if the audio track number corresponding to the number is not exist.       

   c1. A case of recording the MP3 tracks onto the inserted disc
         If the user inputs the play key, the optical disc player changes the established reproducing mode to the MP3 on mode, and reproduces from the MP3 track number  1 .   If the user inputs the random selection key, the optical disc player changes the established reproducing mode to the MP3 on mode, and selectively reproduces the MP3 track.   If the user inputs the digit(s), the optical disc player changes the established reproducing mode to the MP3 on mode, and reproduces the MP3 track corresponding to the corresponding digit, or reproduces from the MP3 track number  1  with displaying “input error message” if the MP3 track number corresponding to the number is not exist.       

   2. A case that the reproducing mode of the optical disc player is established in an MP3 on mode. 
   a2. A case of merely recording the audio tracks onto the inserted disc
         If the user inputs the play key, the optical disc player changes the established reproducing mode to the MP3 off mode and reproduces from the audio track number  1 .   If the user inputs the random selection key, the optical disc player changes the established reproducing mode to the MP3 off mode and selectively reproduces the audio track.   If the user inputs the digit(s), the optical disc player changes the established reproducing mode to the MP3 off mode and reproduces the audio track corresponding to the corresponding digit, or reproduces from the audio track number  1  with displaying “input error message” if the audio track number corresponding to the number is not exist.       

   b2. A case of recording both the audio and the MP3 tracks onto the inserted disc
         If the user inputs the play key, the optical disc player reproduces from the MP3 track number  1 .   If the user inputs the random selection key, the optical disc player selectively reproduces the MP3 track.   If the user inputs the digit(s), the optical disc player reproduces the MP3 track corresponding to the corresponding digit, or reproduces from the MP3 track number  1  with displaying “input error message” if the MP3 track number corresponding to the number is not exist.       

   c2. A case of recording the MP3 tracks onto the inserted disc
         If the user inputs the play key, the optical disc player reproduces from the MP3 track number  1 .   If the user inputs the random selection key, the optical disc player selectively reproduces the MP3 track.   If the user inputs the digit(s), the optical disc player reproduces the MP3 track corresponding to the corresponding digit, or reproduces from the MP3 track number  1  with displaying “input error message” if the MP3 track number corresponding to the number is not exist.       

   Meanwhile, the user performs the reproducing operation by inputting one of the play key, the random selection key, and the digit(s) key after inserting the disc into the optical disc player when a command for reproducing the disc track is forwarded to the optical disc player by the user. 
   Also, the user can perform the reproducing operation by inputting one of the play key, the random selection key, and the digit(s) key under condition that of putting the disc on a tray of the disc at an open state of the disc tray. In this case, the optical disc player closes the tray according to the reproducing command inputted from the user, and performs the general reproducing operation. 
   Also, it is considered that the optical disc player displays a message of non-existing the corresponding track and transits an waiting state for waiting a user command, if a disc which is not correspond to a present reproducing mode is inputted depend on a design of the optical disc player. 
   For example, the optical disc player displays a message of “No MP3” for the reproducing command inputted from the user and performs the waiting state for waiting a next command, if the current reproducing mode is the MP3 on mode and the audio track is merely recorded onto the inserted disc. 
   According to the method of reproducing the optical disc player which can reproduce the audio and the MP3 tracks, there is provided the advantages that of discriminating the attribution information of the track recorded onto the inserted disc and normally performing the reproducing operation for the audio and MP3 tracks recorded onto the inserted disc. 
     FIG. 5  is a flow chart illustrating the state of classifying and reproducing tracks of the inserted disc by the attribution unit at the optical disc player in which the method of discriminating the optical disc according to the present invention is applied. 
   With reference to  FIGS. 1 and 5 , the disc discrimination section  102  of the optical disc player obtains the TOC information of the inserted disc  101  ( 501  step). Subsequently, the disc discrimination section  102  obtains the attribution information of tracks recorded onto the inserted disc  101  with the audio track, the MP3 track, and so on from the obtained TOC information at  501  step ( 502  step). 
   In this stage, the disc discrimination section  102  obtains the attribution of each track by referring the extension information of each track from the obtained TOC information. For example, the disc discrimination section  102  discriminates the object track as the audio tracks if the track extension is “wav”, and as the MP3 tracks if the track extension is “mp3”. 
   Subsequently, the optical disc player categorizes the tracks by each attribution unit using the attribution information of the each tracks obtained at  502  step and performs the numbering operation for the categorized tracks ( 503  step). Thus, the optical disc player performs the numbering operation by the audio or the MP3 tracks, if the audio and the mP3 tracks are mixed. 
   At this stage, the information for the MP3 track recorded onto the inserted disc  101  can be provided with a formation of a file system having a tree structure, and there are many method of numbering the MP3 track recorded onto the inserted disc  101 . 
   Now, the method of numbering the MP3 track from the file system of the MP3 track having the tree structure will be explained referring to  FIGS. 6 and 7 . 
     FIG. 6  illustrates a concept of numbering MP3 tracks of the inserted disc at an optical disc player in which the method of discriminating the optical disc according to the present invention is applied, while  FIG. 7  illustrates the other concept of numbering MP3 tracks of the inserted disc at the optical disc player in which a method of discriminating the optical disc according to the present invention is applied. 
   Specially,  FIG. 6  illustrates a case that of sequentially numbering the MP3 tracks according to a horizontal hierarchy of the tree structure referring to the file system of the MP3 track recorded onto the inserted disc  101 . 
   In  FIG. 6 , the root has two sub directory folders A_dir and B_dir and two MP3 tracks 1.mp3 and 2.mp3. Also, the sub directory A_dir includes a sub directory folder AA_dir and two MP3 tracks A1.mp3 and A2.mp3, the other sub directory B_dir includes two MP3 tracks B1.mp3 and B2.mp3. Further, the sub directory folder AA_dir includes two MP3 tracks AA1.mp3 and AA2.mp3. 
   The file system can be classified three hierarchies such as a root (A_dir, B_dir, 1.mp3, and 2.mp3), the first hierarchy (AA_dir, A1.mp3, A2.mp3, B1.mp3, and B2.mp3) and the second hierarchy (AA1.mp3, and AA2.mp3). 
   Accordingly, if the MP3 tracks recorded onto the inserted disc  101  are sequentially numbered according to the horizontal hierarchy of the tree structure, the order of the MP3 tracks are followed order that 1.mp3, 2.mp3, A1.mp3, A2.mp3, B1.mp3, B2.mp3, AA1.mp3, and AA2.mp3. The optical disc player can normally reproduce a desired track due to communize the numbering information at both the user and the optical disc player, even if the user inputs a command of reproducing the n-th MP3 track. 
   Meanwhile,  FIG. 7  illustrates a case that of sequentially numbering the MP3 tracks according to a vertical hierarchy of the tree structure referring to the file system of the MP3 track recorded onto the inserted disc  101 , and two file systems shown in  FIGS. 7 and 6  have the same structure in a preferred embodiment of the present invention. 
   The file system of  FIG. 7  can be analyzed by the vertical hierarchy and the result is followed order that [A_dir-AA_dir-(AA1.mp3, AA2.mp3)], [A_dir-(A1.mp3, A2.mp3)], [B_dir-(B1.mp3, B2.mp3)], and [(1.mp3, 2.mp3)]. 
   Here, the vertical hierarchy means a vertical path linked from a node of the tree structure to a leaf by way of each branch. Accordingly, if the MP3 tracks recorded onto the inserted disc  101  are sequentially numbered according to the vertical hierarchy of the tree structure, the order of the MP3 tracks are followed order that AA1.mp3, and AA2.mp3, A1.mp3, A2.mp3, B1.mp3, B2.mp3, 1.mp3, 2.mp3. 
   Also, the numbering order can be changed depend on an arrangement reference for the numbering such as an ascending or descending order in the case that of numbering the MP3 tracks according to the horizontal or vertical hierarchy as described in  FIGS. 6 and 7 . 
   While, the optical disc displayer arranges the MP3 tracks on the basis of a specific field referring to the file system information of the obtained MP3 track and numbers according to the arranged result. For example, the optical disc player can arrange and number the MP3 tracks on the basis of an MP3 track name, an MP3 tracks playing time, and an MP3 tracks storing time referring to the file system information of the obtained MP3 track. 
   Further more, the optical disc player displays the information of the MP3 tracks which is reproducing at present and recorded onto the inserted disc, if the user inputs the play key as shown in  FIGS. 8 and 9 . 
     FIG. 8  illustrates the state of a screen displayed on a displaying section in the MP3 stop mode at the optical disc player in which the method of discriminating the optical disc according to the present invention is applied, and  FIG. 9  illustrates the state of the screen displayed on the displaying section in the MP3 play mode at the optical disc player in which the method of discriminating the optical disc according to the present invention is applied. 
   With reference to  FIG. 9 , the optical disc player displays the playing time of the total MP3 tracks recorded onto the disc such as “Total time [01:59:58]” on a displaying section in the MP3 stop mode, if the user inputs the play key. And if the user inputs the play key again, the number of the total MP3 tracks recorded onto the disc such as “MP3 Total Track [215]” is displayed on the displaying section. 
   But, the optical disc player repeatedly displays the two displaying modes of “Total time [01:59:58]” and “MP3 Total Track [215]” on the displaying section, if the user inputs the play key in the MP3 stop mode that the optical disc player is not reproduced at present. 
   With reference to  FIG. 9 , the optical disc player displays the MP3 track number which is reproduced at present such as “Track No. [001]” on a displaying section in the MP3 play mode, if the user inputs the play key. 
   And if the user inputs the play key again, the file or music name of the MP3 track reproduced at present such as “File Name [000000]” within 6 digits on the displaying section. At this stage, the file name is displayed as the file name recorded onto the disc, and the character numbers of the file name displaying onto the displaying section will be changed depend on the digit number of the displaying section. 
   Also, the user inputs the play key again, a play pass time for the MP3 track reproducing at present such as “Elapsed Time [01:20:30]” is displayed, while a play remain time for the MP3 track reproducing at present such as “Track Remain Time [01:40:30] is subsequently displayed, if the user inputs the play key again. 
   Accordingly, the optical disc player sequentially displays “Track No. [001]”, “File Name [000000]”, “Elapsed Time [01:20:30]”, and “Track Remain Time [01:40:30], if the user inputs the play key under reproducing the MP3 track. 
   But, the information of the MP3 file or music that is displayed on the displaying section will be differently displayed for the order described in previous according to an establishment of the optical disc player. 
   According to the method of reproducing the optical disc player of the present invention, there is provided the advantages that of classifying and numbering the audio and the MP3 tracks recorded onto the inserted disc, and normally performing the reproducing operation for the audio and the MP3 tracks for the user&#39;s command for reproducing. 
     FIG. 10  is a block diagram illustrating a construction of the optical disc player including the MP3 reproducing means according to the present invention. In a preferred embodiment of the invention in  FIG. 10 , the optical disc player is a double deck type disc player having two disc drivers. 
   With reference to  FIG. 10 , the optical disc player including the MP3 reproducing means includes a first disc driver  11  (e.g. for the disc player only) for receiving a disc; a second disc  12  driver (e.g. for disc writer or player) for receiving the other disc; a Mi-com  13  (as a first control section) for obtaining the attributive information of the tracks of each disc inserted each disc driver  11  or  12  and performing an overall control for the optical disc player; a FPGA (Field Programmable Gate Array)  14  (as a second control section) for receiving the MP3 track data from the Mi-com  13  and converting the received MP3 track data into a decodable data, and controlling a decoding order for the converted data; an MP3 decoder  15  for decoding the converted MP3 track data provided from the FPGA  14  and forwarding the decoded data to the FPGA  14 ; a CDDA decoder  16  for receiving a CDDA track data provided from the Mi-com  13 , and decoding the CDDA track data; a digital to analog converter  17  for converting the converted MP3 track data provided from the FPGA  14  into an analog data; and an output section  18  for outputting the converted analog data provided from the digital to analog converter  17 . 
   In the preferred embodiment of the present invention, the Mi-com  13  is used as the first control section and the FPGA  14  is used as the second control section designed using the logical operation by a system designer, but it will be understood by those skilled in the art that various changes in form. 
   Now, the operation of the optical disc player including the MP3 reproducing means according to the present invention will be explained with  FIG. 11 . 
     FIG. 11  is a flow chart illustrating the state of reproducing the MP3 file at the optical disc player including the MP3 reproducing means according to the present invention. 
   With reference to  FIGS. 10 and 11 , the Mi-com  14  obtains the attribution information of the track recorded onto the inserted disc ( 1101  step). 
   Here, the Mi-com  13  obtains the attribution information using the track extension information recorded onto the disc from the TOC information obtained from the inserted disc. 
   For example, the optical disc player discriminates the object track as the audio tracks if the track extension is “wav”, and as the MP3 tracks if the track extension is “mp3”. 
   In  FIG. 10 , each disc driver  11  or  12  has the Mi-com  13  to control each inserted disc into two disc drivers  11  and  12 , respectively. 
   Next, the optical disc player reads the MP3 track data recorded onto the inserted disc under reproducing the MP3 track ( 1102  step). At this time, the CDDA decoder  16  could not decode the MP3 track data because the data formations of the MP3 track and CDDA track are different each other. 
   Accordingly, the FPGA  14  converts the MP3 track data into the decodable data, and forwards the decoded data to the MP3 decoder  15  ( 1103  step). 
   At this time, the FPGA  14  can determine a priority for forwarding the converted data to the MP3 decoder  15  according to an originating driver from the first or second driver  11  or  12  when the converted data is forwarded to the MP3 decoder  15 . 
   Subsequently, the MP3 decoder  15  decodes the converted data of the MP3 track provided from the FPGA  14  and forwards the decoded signal to the FPGA  14  again ( 1104  step). 
   It is desirable that the FPGA  14  includes a first and a second slave FPGAs for converting the MP3 track data recorded onto the disc inserted into the first and the second disc drivers  11  and  12  into decodable data, and a master PFGA for controlling the decoding order for the converted signal of the first and the second slave FPGAs. 
   Meanwhile, it can be designed the optical disc player having new functions that the master FPGA can include a function of converting the MP3 track data, recorded onto the disc inserted into the first disc driver  11 , into the decodable data and a separated slave FPGA include a function of converting the MP3 track data, recorded onto the disc inserted into the second disc driver  12 , into the decodable data. 
   In the preferred embodiment of the present invention, the disc drive is applied with the double deck having two disc drivers. But, each disc driver can have the slave FPGA, respectively, if many disc drivers are applied into the optical disc player. 
   Meanwhile, the FPGA  14  forwards to the decoded MP3 track signal to the analog to digital converter  17 . The analog to digital converter  17  converts the decoded MP3 track signal into the analog signal and outputs through the output section  18  to perform the reproducing operation for the MP3 track ( 1105  step). 
   According to the optical disc player of the present invention, there is provided the advantages that of obtaining the track attribution recorded onto the inserted disc, and normally performing the reproducing operation for the MP3 track the disc inserted into the plurality of disc drivers using one MP3 decoder. 
   Also, the manufacturing cost of the optical disc player can be reduced by reproducing the MP3 track recorded onto the disc inserted into the plurality of disc drivers using only one MP3 decoder. 
   While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.