KR100353159B1 - MP3 file Sound Reproduction System and the Playing Method - Google Patents

Abstract

PURPOSE: A system of reproducing MP3 files and a method for driving the system are provided to allow a user to easily select a specific song from thousands of songs stored in MP3 files in a hard disc drive. CONSTITUTION: A system of reproducing MP3 files includes a main body(200), a remote controller(100), and a sound generator(300). The main body is composed of a hard disc drive(215) in which a plurality of music files compressed in MP3 files, a drive accommodation unit(210), a main body controller(230) for reading a selected music file to store or output the music file, a signal processor(240) for converting the music file data output from the main body controller into an analog voltage signal, and a power supply(205). The remote controller includes a display(120), a button pad(110) used for selecting one of music files of a music file list displayed on the display and instructing output of the selected music file, and a sub controller(130) for inputting the output signal to the main body controller to output the selected music file. The sound generator receives the analog voltage signal from the signal processor of the main body and converts the signal into a sound signal to output the sound signal.

Description

MP3 file Sound Reproduction System and the Playing Method}

The present invention relates to a system for reproducing an MP3 file and a method of driving the same, and more particularly, to configure a system for outputting and listening to data of an MP3 file stored in a hard disk drive, without the user frequently changing the recording medium. The present invention relates to a system for reproducing an MP3 file and a driving method thereof, by which a user can easily select and listen to music of a specific desired song among thousands of songs stored as an MP3 file.

In general, an MP3 file is a kind of computer music file for recording audio data. The MP3 file is a compressed file capable of downloading and listening to desired music through the Internet without a sound recording device such as a recorder. In other words, by selectively downloading the desired music through the Internet and storing it as an MP3 file in a computer, and then extracting and outputting the MP3 file, the user can listen to the speaker connected to the computer.

Since the MP3 file can be selectively downloaded and listened to only the music file desired by the user, the conventional inconvenience of having to purchase a CD or a tape including a large number of unwanted songs in order to listen to one desired song is avoided. It has an advantage that can be solved.

Accordingly, recently, a portable MP3 file player has been developed. The portable MP3 file player can listen to music stored as an MP3 file at a desired place and time.

However, recently developed portable MP3 file players have been made portable, so that the number of recordable MP3 files is only about 10, there is a problem that is not suitable for home or car use. That is, when a user wants to listen to a specific song among a plurality of songs belonging to several genres according to a situation, a large number of MP3 file recording media must be provided, and among these recording media, the music of a specific song desired by the user can be provided. Finding a recording medium containing a file one by one, and then inserting and combining the recording medium into a portable MP3 player has been troublesome.

Accordingly, the present invention has been made to solve the above problems, and download and store the MP3 file in the hard disk drive (HDD) removable from the computer, and outputs the data of the MP3 file stored in the hard disk drive By allowing the user to listen to the music, the user can easily select and listen to the desired music according to the situation from among thousands of songs stored as MP3 files without frequent replacement of the recording medium. The main object of the present invention is to provide a suitable system for playing MP3 files and a method of driving the same.

1 is a configuration diagram of a system for playing MP3 files according to an embodiment of the present invention;

2 is a block diagram showing a specific configuration of FIG. 1;

3 is a front view illustrating an example of a remote controller in FIG. 1;

4 is a flowchart illustrating a method of driving a system for playing MP3 files according to an embodiment of the present invention;

FIG. 5 is a flowchart illustrating an embodiment which may be added to the output control step of FIG. 4;

6 is a flow chart showing another embodiment that may be added to the output control step in FIG.

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

100: remote controller, 110: button portion, 120: display portion, 130: sub control portion, 200: main body, 205: power supply portion, 210: drive storage portion, 215: hard disk drive, 220: input and output interface, 230: body control unit, 240: signal processing unit, 242: PLD, 244: MP3 decoder, 246: D / A converter, 248: amplifier, 300: sound generator, 310: cassette pack, 320: car audio set.

In order to achieve the above object, the present invention has a hard disk drive in which a plurality of music files compressed into MP3 files are recorded, and a space part to which the hard disk drive is coupled, and a list of music files stored in the hard disk drive and selected. A drive accommodating unit installed to read file data, and receiving and storing a list of music files recorded on the hard disk drive through the drive accommodating unit, and extracting and storing selected music file data according to the input output signal. A main body comprising a main body control unit for outputting, a signal processing unit for decompressing and converting the music file data output through the main body control unit to convert to an analog voltage signal, and a power supply unit for supplying power to each unit: stored in the main body control unit Enter music file list A display unit for receiving and expressing a button, a button unit for selecting one music file from the list of music files displayed on the display unit, and instructing the main body control unit to output data of the selected music file, and a music file stored in the main body control unit. A remote controller comprising a sub controller for causing a list to be displayed on the display unit and highlighting a music file selected by the button unit and outputting an output signal to the main body controller according to the operation of the button unit; A sound generator which receives an analog voltage signal output through the signal processor of the main body, converts the analog voltage signal into an acoustic signal, and outputs the sound signal; Characterized in having a.

In addition, the present invention, if the hard disk drive in which a plurality of music files are recorded coupled to the drive housing, operating the power button of the remote controller, the CPU is driven to initialize the system; A list storing step of storing a list of music files recorded on the hard disk drive in a main memory after the starting step; A list output step of outputting a list of music files stored in the main memory so as to be displayed on a display unit of a remote controller and highlighting a top level music file after the list storing step; A button operation detection step of sensing a button unit operation of the remote controller after the list output step; An output control step of selecting one music file from the music file list to be highlighted and outputting the highlighted music file through the sound generator according to the operation of the button detected in the button operation detection step; Characterized in that it comprises a.

Hereinafter, exemplary embodiments of a system for reproducing MP3 files and a method of driving the same according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a coupling diagram of a system for playing MP3 files according to an embodiment of the present invention, Figure 2 is a block diagram showing a specific configuration of Figure 1, as shown in the present invention, a remote controller ( 100), the main body 200 and the sound generator 300 is configured.

The main body 200 is a main device constituting the present invention and includes a power supply unit 205, a drive accommodating unit 210, a hard disk drive 215, a main body control unit 230, and a signal processing unit 240.

The hard disk drive (HDD) 215 is a storage medium for storing a plurality of music data compressed into MP3 files through a computer. In the case of a 2M byte hard disk drive 215, more than 2000 pieces of MP3 music file data are stored. Can be recorded and stored.

The drive accommodating part 210 includes a space part to which the hard disk drive 215 is coupled to one side of the main body 200, and a music file stored in the hard disk drive 215 coupled to the space part. It is configured to read the list and the data of the selected music file.

The main controller 230 receives, stores and outputs a list of music files recorded on the hard disk drive 215, and extracts selected music file data from the hard disk drive 215 according to the output signal. As a device for storing and outputting, the device may include a CPU 232, a main memory 234, and a code memory 236.

The code memory 236 is a memory device in which a program for operating the main body control unit 230 is stored. The code memory 236 includes an EPROM. The main memory 234 is a memory device that stores a list of music files stored in the hard disk drive 215 and data of a selected music file, and is composed of DRAM.

The CPU 232 is a device configured to perform control according to a program stored in the code memory 236. The CPU 232 reads a music file list stored in the hard disk drive 215, and reads the main memory ( 234, and when an output signal is inputted, data of the selected music file is read from the hard disk drive 215 and stored in the main memory 234, and the selected music file data is stored in the signal processor. And outputs through 240. Such a CPU 232 may be made of a small semiconductor, which may be manufactured by an instruction abbreviated computing processor (RISC CPU).

In addition, the code memory 236 stores logo music and logo screen data, and at the initial stage of program driving by the CPU 232, the logo music and the logo screen are respectively the sound generator 300 and the remote controller. It may be configured to output to (100). In addition, an input / output interface (E-IDE interface) may be coupled between the drive accommodating part 210 and the main body controller 230 so that input and output of control signals and data signals can be easily realized.

The signal processor 240 may decompress the music file data output through the main body controller 230, convert the music file data into an analog voltage signal, and output the sound signal through a speaker connected through an audio cable. The device may be configured to include a PLD 242, an MP3 decoder 244, a D / A converter 246, and an amplifier 248.

The programmable logic device (PLD) 242 is configured to receive music file data output by the microprocessor bus method from the CPU 232 of the main body control unit 230 and convert it into a serial digital signal. do. The MP3 decoder 244 is connected to an output terminal of the PLD 242 and configured to decompress and output a serial digital signal compressed into an MP3 file through the PLD 242, and the D / A converter 246 is configured to be output. And converts the digital signal output through the MP3 decoder 244 into an analog signal. The amplifier 248 is configured to amplify and convert the power of the analog signal output through the D / A converter 246 into a signal that can be transmitted to an external device. In addition, the adjusting unit 249 for adjusting the amplification ratio of the amplifier 248 may be further configured, in this case, by configuring the adjusting unit 249 as a turn button 201 exposed to the outer surface of the main body 200 It would be desirable to allow the user to easily adjust the amplification factor of the amplifier 248.

The power supply unit 205 is configured to supply power for driving the drive accommodating unit 210, the main body controller 230, the signal processing unit 240, and the like, and when the main body 200 is mounted in a vehicle. Preferably, the main body is configured to operate using a 12V battery power source B provided in a vehicle.

On the other hand, the remote controller 100, a device for controlling the operation of the main body 200 to output a specific song desired by the user, the 25-pin D-SUB cable 150 for information transfer to the main body 200 It is connected, and comprises a button unit 110, a display unit 120 and a sub control unit 130.

The sub controller 130 receives the music file list stored in the main memory 234 from the main body controller 230 and causes the music file list to be displayed on the display unit 120. In addition, the sub controller 130 allows one of the music files selected by the operation of the button unit 110 to be highlighted in the list of music files displayed on the display 120, and outputs the data of the selected music files. It sends an output signal to the main body control unit 230 as possible.

The button unit 110 is a means for selecting one music file from a list of music files displayed on the display unit 120 and instructing the main body controller 230 of data output of the selected music file. As shown in Fig. 3, the power button 111, the up / down buttons 112 and 113, the folder up / down buttons 114 and 115, the play / stop button 116 and the pause button 117 are shown. Can be configured.

The power button 111 is a button for commanding the start of the main body 200 and the remote controller 100. When the power button 111 is operated, the power supply unit 205 of the main body control unit 230 is powered. Applied to the 200 and the remote controller 100 is configured to start each device.

The up / down buttons 112 and 113 are buttons for selecting one music file from a list of music files displayed on the display unit 120. When the up button 112 is operated, a previous song of the current music file is displayed. The music file is selected while being highlighted on the display unit 120, and when the down button 113 is operated, the next music file of the current music file is selected while being highlighted on the display unit 120.

The play / stop button 116 is a button for controlling whether the music file data output from the main body 200 is output. Whenever the play / stop button 116 is operated, the play / stop button 116 may be used. The data is configured to repeat the output and the stop, wherein the data of the selected music file is output again from the beginning every time it is output again after the stop.

The folder up / down buttons 114 and 115 form music folders stored in the hard disk drive 215 by genre or singer, and music file data of the genre and singer are stored in each folder. In this case, the button is used to search the music file list by folder. When the folder up button 114 is operated, the previous folder of the folder to which the current music file belongs is selected while being highlighted on the display unit 120. When the folder down button 113 is operated, the next folder of the folder to which the current music file belongs is selected. It is configured to be selected while being highlighted on the display unit 120. At this time, if data of a predetermined music file is being output before the operation of the folder up / down buttons 114 and 115, the data output of the music file being output is terminated, and the data of the first music file of the moved folder is stored in the hard disk. It is configured to take out from the disk drive 215 and output it.

The pause button 117 is a button for pausing the output of the music file data being played, and is configured to repeat the pause and re-output of the output music file data whenever the pause button 117 is operated. At this time, the music file data is outputted from the portion following the music file data output in the previous step.

In the present invention, as a preferable music file storage medium, a hard disk drive 215 is used, but it is possible to replace the conventional CD ROM drive, of course, when installing it in the main body 200, as shown in FIG. As shown, the eject button shared with the pause button 117 may be further configured.

The display unit 120 receives and displays a list of music files stored in the main memory 234 of the main body controller 230 and highlights the music files selected according to the operation of the button unit 110. It is a device for indicating the state.

Although the music file list 124 may be configured to be displayed on the display unit 120, an operation of displaying a current control state above the display unit 120 so that a user can check the control state of the main body 200. It may be desirable to configure the display portion 122. In this case, the operation display unit 122 is configured to have a character string such as play, stop, pause, and tray open, and the selected music file data is output, stopped, and paused. Whenever the status is open, or the tray is open, you can configure the text to be highlighted.

The sound generator 300 converts an analog voltage signal output through the signal processor 240 of the main body 200 into an audible sound signal, and outputs the audio signal to the cassette pack 310 and the audio. It may consist of a set 320.

The cassette pack 310 is a device for converting a voltage signal into a magnetic signal sensed by the head of the cassette driver, has a shape that is inserted into the cassette driver 321 of the audio, the signal processor of the main body 200 240 is connected to the output terminal with a cable 250. The audio set 320 reads a magnetic signal of an inserted cassette tape, converts the magnetic signal into an audio signal, and outputs the magnetic signal. A car audio or a home audio set of a vehicle may be used. will be. Accordingly, the analog voltage signal output from the signal processor 240 is converted into a magnetic signal through the cassette pack 310, and then detected by the head of the cassette driver 321 provided in the audio, and then the sound signal. The audio signal is converted into audible audio signal through the audio speaker.

The sound generator 300 is composed of a cassette pack 310 together with an audio set 320, which is a line in which can directly connect a sound voltage signal to a speaker of general home audio or a speaker of a car car audio. in) because the terminal is not provided, and the speaker having a line in terminal capable of directly receiving a sound voltage signal, the speaker may be configured by the speaker alone. Of course.

Referring to the driving method of the system for playing MP3 files having the above configuration as follows.

As shown in Figure 4, the driving method of the system for playing MP3 files according to the present invention, the start step (S11), list storage step (S12), list output step (S14), button operation detection step (S20) and It is configured to include an output control step.

First, when the power button 111 of the remote controller 100 is operated in a state in which a hard disk drive 215 having a plurality of music file lists and music file data recorded thereon is coupled to the drive accommodating part 210, a power supply unit ( 205) When power is applied to the remote controller 100 and the main body 200, a start step S11 in which the CPU 232 of the main body 200 is started and initialized according to a program stored in the code memory 236 is performed. Is performed.

After the initialization of the system is finished in the start step (S11), a list storage step (S12) of reading the music file list recorded on the hard disk drive 215 and storing it in the main memory 234 is executed. Subsequently, a list output step S14 for outputting the music file list stored in the main memory 234 to the remote controller 100 to be displayed on the display unit 120 is performed. In this case, the display unit 120 In the list of music files to be displayed in, the top music file is displayed in a highlighted state.

When the logo music and the logo screen are stored in the code memory 236 of the main body 200, the step of outputting the logo music and the logo screen data together with the initialization of the system is performed in the start step (S11). Can be configured. In this case, the logo screen data is output to the remote controller 100 to be displayed on the display unit 120, and the logo music data is output to the signal processor 240 to be output through the sound generator 300. . Then, in the case of including the output step of the logo screen and the logo music, after performing the logo output end step (S13) to end the output of the logo music and the logo screen after the list storage step (S12) first It is configured to perform the list output step (S14).

After the list output step S14, a button operation detection step S20 for detecting an operation of the button unit 110 of the remote controller 100 is performed, and then an output control step is performed.

In the output control step, according to the operation of the button unit 110 detected in the button operation detection step (S20), one music file of the list of music files displayed on the display unit 120 of the remote controller 100 The data is selected in the highlighted state, and the data of the music file selected in the highlighted state is output to the signal processor 240 so that the sound signal is output through the sound generator 300.

While the button operation is not detected in the button operation detection step S20, the play end confirmation step S31 may be performed to determine whether the output of the played music file data is terminated. In the play end checking step (S31), if it is determined that there is no output of the played music file data or the output of the played music file data is terminated, the process returns to the button operation detecting step (S20), and the played music file data is returned. If it is determined that the output of the song is finished, the next song play step (S32) of selecting and outputting the next song is performed.

That is, in the next song play step (S32), the music file data of the next song is read from the hard disk drive 215 and stored in the main memory 234, and the music file data is stored through the signal processor 240. By outputting, it is output through the sound generator 300.

On the other hand, the output control step, the first status check step (S41), the play step (S42), the stop step (S43), the second status check step (S51), the previous song play step (S52), the previous song selection step (S53), the third status check step (S61), the next song play step (S62) and the next song selection step (S63) can be configured.

When the operation of the play / stop button 116 is detected in the button operation detection step S20, a first state checking step S41 for determining whether the present status is a play state is executed, and the first state checking step S41. If it is determined that the current status is a play state, a stop step (S43) of stopping output of the currently playing music file data and returning to the button operation detection step (S20) is executed. In addition, when it is determined in the first status checking step (S41) that the current status is stopped, the data of the music file highlighted on the display unit 120 of the remote controller 100 is output through the sound generator 300. A play step (S42) for outputting an output signal to the main body controller 230 is executed.

That is, in the play step (S42), the music file data highlighted on the display unit 120 is extracted from the music file data stored in the hard disk drive 215. Thus, the extracted music file data is extracted. Is stored in the main memory 234 via the input / output interface 220 and the CPU 232 and output to the signal processor 240. The music file data input to the signal processing unit 240 is converted into a serial digital signal through the PLD 242, decompressed through the MP3 decoder 244, and then analog via the D / A converter 246. The signal is converted into a signal, power amplified by the amplifier 248, and converted into a transmittable voltage signal, and then output through a line out terminal provided at one side of the main body 200. The sound voltage signal thus output is applied to the cassette pack 310 and converted into a magnetic signal. The cassette pack 310 is detected by the head of the combined audio, and then a speaker connected to the audio is output. It is to be output as a sound signal, and after such a play step (S42) is configured to return to the button operation detection step (S20).

When the operation of the up button 112 is detected in the button operation detecting step S20, a second status checking step S51 for determining whether the status is a play state is executed, and in the second status checking step S51. If it is determined that the current status is not in the play state, the previous song of the music file highlighted on the display unit 120 of the remote controller 100 is highlighted, and then the previous song returned to the button operation detection step (S20). The selection step S53 is executed.

If it is determined in the second status checking step (S51) that the current status is a play state, the output of the music file data currently being played is ended, and the previous song music file data is read from the hard disk drive 215 to be read. By storing the music file data read in the memory 234 and outputting the read music file data to the signal processing unit 240, the previous music file data of the song played before the up button 112 is operated is generated in the sound generator 300. By performing the previous song play step (S52) to be output as a sound signal through the), after performing the previous song play step (S52) is configured to return to the button operation detection step (S20).

When the operation of the down button 113 is detected in the button operation detecting step S20, a third status checking step S61 for determining whether the status is a play state is executed, and in the third status checking step S61. If it is determined that the present status is not in the play state, the next song of the music file highlighted on the display unit 120 of the remote controller 100 is highlighted, and then the next song returns to the button operation detecting step (S20). The selection step S63 is executed.

When it is determined in the third state checking step S61 that the current status is in the play state, the output of the music file data currently being played is ended, and the next music file data is read from the hard disk drive 215 to be read. By storing the music file data read in the memory 234 and outputting the read music file data to the signal processing unit 240, the next music file data of a song played before the down button 113 is operated is the sound generator 300. The next song play step (S62) to be output as an audio signal through the) and after performing the next song play step (S62) is configured to return to the button operation detection step (S20).

On the other hand, when the music files stored in the hard disk drive 215 is stored in the classified unit, the output control step, as shown in Figure 5, the fourth state check step (S71), the previous folder It may be configured to further include a play step (S72), the previous folder selection step (S73), the fifth status check step (S81), the next folder play step (S82) and the next folder selection step (S83).

That is, when the operation of the folder up button 114 is detected in the button operation detecting step S20, a fourth state checking step S71 for determining whether the present status is a play state is executed, and the fourth state checking step ( If it is determined in step S71 that the current status is not a play state, the previous folder of the folder to which the music file is highlighted on the display unit 120 of the remote controller 100 is highlighted, and then the button operation detection step (S20). The previous folder selection step (S73) to be returned is executed.

If it is determined in the fourth state check step (S71) that the current status is a play state, the output of the music file data currently being played is terminated, and the first music file of the previous folder of the folder to which the played music file belongs is displayed on the display unit 120. Hi), the music file data is read from the hard disk drive 215 and stored in the main memory 234, and the read music file data is output to the signal processor 240. By executing the previous folder play step (S72) to output the first folder music file data of the previous folder, the first folder music file data of the folder that was played before operating the folder up button 114, as the sound signal through the sound generator 300 After performing the previous folder play step (S72), it is configured to return to the button operation detection step (S20).

When the operation of the folder down button 115 is detected in the button operation detecting step S20, a fifth state checking step S81 for determining whether the current state is a play state is executed, and the fifth state checking step S81. If it is determined that the current status is not in the play state, the next folder of the folder to which the music file is highlighted on the display unit 120 of the remote controller 100 is highlighted, and then returns to the button operation detection step (S20). The next folder selection step (S83) is executed.

If it is determined in the fifth state checking step S81 that the current state is in the play state, the output of the music file data currently being played is terminated, and the first music file of the next folder in the folder to which the played music file belongs is displayed on the display unit 120. Hi), the music file data is read from the hard disk drive 215 and stored in the main memory 234, and the read music file data is output to the signal processor 240. By executing the next folder play step (S82) for outputting the first folder music file data of the next folder of the folder to which the song played before operating the folder down button 115 is output as an audio signal through the sound generator 300. After performing the next folder play step (S82), it is configured to return to the button operation detection step (S20).

In addition, when a pause function is included in the MP3 file playback system according to the present invention, the output control step may further include a sixth state checking step S91, a pause step S92, and a pause release step S94. have.

That is, when the operation of the pause button 117 is detected in the button operation detecting step S20, a sixth state checking step S91 for determining whether the status is a play state is executed, and the sixth state checking step S91. If it is determined that the status is a play state, the pause of the output of the music file data currently being played is performed, and the pause step S92 of returning to the button operation detection step S20 is executed. In the sixth state checking step S91, when it is determined that the current state is a pose state, the pose is released so that music file data played before the pose setting is continuously output through the sound generator 300. The release step (S94) is executed.

FIG. 6 is a flowchart illustrating a case where a CD Rom drive is applied to the main body 200 instead of the hard disk drive 215, and the eject button for opening and closing the tray of the CD Rom is configured to be shared with the pause button 117. will be.

That is, when the operation of the eject / pose button is detected in the button operation detecting step S20, the sixth state checking step S91 is executed first, and the status is the play state in the sixth state checking step S91. If it is determined, the pause step (S92) for pausing the output of the music file data being played is executed. If it is determined in the sixth state checking step S91 that the current state is not a play state, a pose checking step S93 for determining whether the current state is a pose state is executed, and the current state poses in the pose checking step S93. If it is determined that the state is a pause release step (S94) to release the pause state.

In addition, if it is determined that the current status is not in a paused state in the pose confirming step (S93), since the eject / pose button is operated in a non-played state or not in a paused state, it is operated to control opening and closing of the CD Rom tray. It is determined that it is, and to perform the eject confirmation step (S95) to determine whether the CD Rom tray is open. If it is determined in the eject confirmation step (S95) that the CD Rom tray is open, execute the cross step (S97) for closing the CD Rom tray, and then return to the start step (S11) so that the system can be initialized again. . If it is determined that the CD Rom tray is closed in the eject check step (S95), it is configured to return to the button operation detection step (S20) after executing the open step (S96) of opening the CD Rom tray.

As can be seen from the above embodiment, the system for playing MP3 files according to the present invention and a method of driving the same, the system to output and listen to the data of the MP3 files stored in the computer hard disk drive With this configuration, the user can easily select and listen to the desired specific music from the thousands of songs stored as MP3 files according to the situation without frequent change of the recording medium, thereby making the system for playing MP3 files convenient for home and car. There is an effect that can be used.

Although the above has described a system for playing MP3 files and a driving method thereof according to an embodiment of the present invention, the present invention is not limited thereto, and those skilled in the art will be able to variously modify and apply them.

Claims (15)

A hard disk drive in which a plurality of music files compressed into MP3 files are recorded, and a drive unit having a space unit where the hard disk drive is coupled and installed to read a list of music files and selected file data stored in the hard disk drive. And a main body controller for receiving and storing a list of music files recorded on the hard disk drive through the drive accommodating unit, and extracting and storing and outputting selected music file data according to the input output signal. A main body comprising a signal processing unit which decompresses the output music file data, converts it into an analog voltage signal, and outputs it; and a power supply unit supplying power to each unit: a display for receiving and displaying a list of music files stored in the main body control unit; Boo, above A button unit for selecting one music file from the list of music files displayed on the display unit and instructing the main body controller to output data of the selected music file, and a list of music files stored in the main body controller are displayed on the display unit. And a sub controller configured to highlight the music file selected by the button unit and to output an output signal to the main body controller according to the operation of the button unit; A sound generator for receiving an analog voltage signal outputted through the signal processor of the main body, converting the signal into an acoustic signal, and outputting the sound signal, the system comprising: The main body control unit stores a program, logo music, and logo screen data, and is configured to output the logo music and the logo screen for a predetermined time through the sound generator and the display unit, respectively, at the beginning of the program driving by the remote controller. Wow; A main memory for storing a music file list and selected music file data; Driving a program stored in the code memory, storing a music file list to be read through the drive accommodating unit in the main memory, and extracting selected music file data through the drive accommodating unit according to an output signal input from the sub controller; And a CPU which stores the data in a main memory and outputs the same through the signal processor. And an input / output interface is connected between the main body controller and the drive housing. delete delete delete delete delete delete delete delete delete If the power button of the remote controller is operated while the hard disk drive in which a plurality of music files are recorded is coupled to the drive housing, the CPU is driven to initialize the system and the logo music and logo stored in the code memory. A start step of outputting a screen to the sound generator and the display, respectively; A list storing step of storing a list of music files recorded on the hard disk drive in a main memory after the starting step; A list output step of outputting a list of music files stored in the main memory so as to be displayed on a display unit of a remote controller and highlighting a top level music file after the list storing step; A logo output end step of terminating the output of the logo music and logo screen after the list output step; A button operation detection step of detecting a button unit operation of the remote controller after the logo output end step; And, An output control step of selecting one music file from the music file list to be highlighted and outputting the highlighted music file through the sound generator according to the operation of the button detected in the button operation detection step; System driving method for playing MP3 files, characterized in that it comprises a. delete delete delete delete