KR20000014721A - Method and device for recording and reproducing a computer music file data - Google Patents

Abstract

PURPOSE: A method is provided to record and reproduce a computer music file data. CONSTITUTION: The method for recording and reproducing a music file data comprises the steps of: performing a music file managing program in a personal computer(200); setting a power supply mode of a portable audio record and reproduce apparatus(300) connected to the personal computer(200), to a hard disk mode; loading a music file data and table information down or up to the portable audio record and reproduce apparatus(300); storing the data and table information loaded down to from the personal computer(200) into a hard disk; setting the power supply mode to a reproduce mode; selecting a music file data referring to the stored table information; reading the selected music file data from the hard disk; decoding the read music file information; and converting the decoded music file data to analog audio signal to output the converted audio signal.

Description

Method for recording and playing back computer music file data, and apparatus therefor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recording and reproducing computer music file data and a device thereof, and more particularly to portable audio recording of MP3 (MPEG LAYER 3 data compressed data data) downloaded to a personal computer through the Internet or a PC communication network. And a method and an apparatus capable of downloading a downloaded data to a hard disk of a reproducing apparatus and reproducing the downloaded data.

Recently, computer music, MP3, has become a huge hit for netizens. MP3 is a new concept of media that compresses music into 4 ~ 6MB computer file by MPEG1 LAYER3 method and then transmits it through PC communication or internet to play it on multimedia personal computer. MP3 has a clear sound quality, and you can download various genres of music through the Internet.

Therefore, netizens are gathering on the Internet homepage and the PC communication menu containing MP3 music, and homepages containing thousands of MP3 songs by singer and genre are in the works.

However, since MP3 music cannot be carried like a CD or cassette tape and can be enjoyed only on a computer through the Internet, there is a problem that it can not be enjoyed in a moving or no space.

Therefore, in order to enjoy MP3 music in a space without a computer, it was possible to record analog-converted music on a cassette tape on a computer and listen to the recorded cassette tape through a portable cassette tape player. However, the cassette tape may have noise during the recording process, and the playback quality of the tape may be degraded by repeated playback. Therefore, the cassette tape may not enjoy the pure sound quality of digital music as it is.

Therefore, as the demand for the appearance of a device that can enjoy the computer music in the original sound even in the space of moving or without a computer is being actively researched and developed.

In response to this, the present applicant has developed the world's first portable audio recording and reproducing apparatus that can store MP3 music using a flash memory so that MP3 music can be enjoyed in a computer-free space, and has applied for a patent application 97-62315.

However, since the number of songs that can be stored in the flash memory is determined according to the memory capacity, the cost increases when the memory capacity is increased to store many songs. Normally, MP3 files have a size of 3 to 4MB, so up to 16 songs can be stored in 64MB of flash memory.

SUMMARY OF THE INVENTION The present invention provides a method of recording and playing back computer music file data that enables users to store hundreds of MP3 files on a hard disk in order to solve the problems of the prior art. To provide the device.

Another object of the present invention is to provide a portable audio recording and reproducing apparatus of computer music file data which is conveniently mounted on a vehicle and used.

1 is a diagram showing the configuration of a computer music file data recording and reproducing apparatus according to the present invention;

2 is a block diagram of a portable audio recording and reproducing apparatus according to the present invention.

3 is a view showing a tune table and a play table according to the present invention;

4 is a diagram for explaining a reproducing operation state of the portable recording and reproducing apparatus according to the present invention;

5 to 7 are views showing the display state in each operation mode of the LCD display window according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100: PC network or Internet 200: Personal computer

300: portable recording and reproducing apparatus 400; cable

500: Earphone

312; Printer connector 314; Data storage

316: first interface unit 318: hard disk driver

320; Data reproducing section 322; Decoder

324; Analog-to-digital converter 326; Earphone jack 328: line output jack 330: display unit 332: key input unit 334: control unit 336; Micro 338: Rom

340: RAM 342: second interface unit

344: power supply unit 346: battery

348: DC-DC converter 350: power mode switch

352; External Power Jack

In order to achieve the above object of the present invention, the method of the present invention comprises: executing a music file management program in a personal computer; Setting the power supply mode of the portable audio recording and playback device connected to the personal computer to the hard disk mode; Downloading or uploading music file data and table information to a portable audio recording and reproducing apparatus connected through a printer port on a management program; A portable audio recording and reproducing apparatus, comprising: storing data and table information downloaded from the personal computer on a hard disk; Setting a power supply mode of the portable audio recording and playback apparatus to the playback mode; Selecting music file data with reference to the stored table information; Reading selected music file data from the hard disk; Decoding the read music file data; And converting the decoded music file data into an analog audio signal to output audio.

A device of the present invention includes a music file management program, comprising: a personal computer for downloading and uploading music file data and digital voice data through an input / output port on an executed management program; And when connecting to the personal computer through an input / output port, only the hard disk and the interface unit apply an operating voltage to download and upload music file data and table information, and store the downloaded music file data and table information on the hard disk. In the reproducing mode, the operating voltage is supplied to each unit to read the selected music file data from the hard disk with reference to the stored table information, decode the read music file data, and convert the decoded music file data into an analog music signal. And a portable audio recording and reproducing apparatus for converting and outputting speech.

In addition, the portable device of the present invention comprises a housing having a form suitable for carrying; A plurality of jacks respectively installed on an outer circumferential surface of the housing and configured to connect earphones and an external power source, respectively; a key input unit for generating a command input via a plurality of keypads installed on the outer circumferential surface of the housing as a key signal; A display unit installed on an outer circumferential surface of the housing and configured to display an operation state; A first interface unit connected to a personal computer through a parallel port provided on an outer circumferential surface of the housing and for interfacing input / output of the connected personal computer with music file data; A hard disk installed in the housing and configured to store music file data and table information provided through the first interface unit; A decoder installed in the housing, for decoding music file data read out from the hard disk; A digital analog converter installed in the housing and converting the data output through the decoder into an analog voice signal and outputting the converted voice signal through the earphone connection jack; A control unit installed in the housing and reading music file data and table information from the hard disk through the first interface unit, displaying the read table information on the display unit, and providing the selected music file data to the decoder through a key input unit. ; And a battery detachably housed in the housing, the operation voltage being generated from a DC voltage supplied through the external power connection jack or a terminal voltage of the battery, and connected to the personal computer and the hard disk. And a power supply unit that provides an operating voltage only to the hard disk and provides an operating voltage to each unit when the hard disk and the controller are connected to each other.

Hereinafter, with reference to the accompanying drawings, it will be described in detail the present invention through an embodiment of the present invention.

1 shows a configuration of a computer music file data recording and reproducing apparatus according to the present invention. The personal computer 200 is connected to the Internet or a PC communication network to download MP3 music file data. The personal computer 200 is connected to the portable device 300 and the printer port connection cable 400 to enable bidirectional communication. The personal computer 200 includes an external input device such as a keyboard and a mouse and an external output device such as a monitor, and requires a Windows program and an Explorer program as a multimedia environment capable of PC communication. The computer 200 is installed with a portable device hard disk management program provided as a bundled CD on Windows.

The personal computer 200 searches for the portable device 300 connected through the cable 400 and recognizes the external hard disk driver as a system driver. Therefore, the music file downloaded on the computer can be stored in the hard disk of the portable apparatus 300 under the environment of the computer. The personal computer 200 may support printer ports in SPP, EPP, and ECP modes.

In the personal computer 200, when the downloaded music files are registered in the song table, the song names are classified and arranged sequentially in the song table shown in FIG. If the hard disk is 2GB in size, it can store up to 500 MP3 files with 4MBDML size. In order to manage such a large number of songs, a song table is required. In the personal computer 200, a play list table can be created as shown in FIG.

In the playlist table, 500 songs are classified according to genre, singer, or era, and the classified songs are stored.

The created music table and playlist table are downloaded to the hard disk of the portable apparatus 300 together with the MP3 file. In the personal computer 200, the portable device 300 may copy a music file to a DML hard disk or delete a stored music file.

2 shows a block configuration of a portable audio recording and reproducing apparatus according to the present invention. The portable device 300 includes a housing having a form suitable for carrying, as shown in FIG. 1.

The portable device 300 is installed on the outer circumferential surface of the housing, respectively, and includes a plurality of jacks for connecting earphones and external power, for example, an earphone jack 326, a line output jack 328, an external power connection jack 352, and the like. It includes. The portable device 300 includes a plurality of keypads installed on the outer circumferential surface of the housing, for example. Play list key, up key, down key, volume up key, volume down key, play / stop key, and the like. And a key input unit 332 for generating commands input via these keypads as key signals.

The play / stop key toggles between play and stop modes with each press.

The up arrow moves the cursor on the display window to the previous line, and the down arrow moves the cursor on the display window to the next line. Also, pressing the up key during playback plays the previous song, and pressing the down key plays the next song.

Press the Playlist key to select a group in the order of Total Songs-Group 1-Group 2-Group 3-....

Volume up and down keys adjust the volume up and down.

The portable device 300 includes an LCD display window installed on an outer circumferential surface of the housing and includes a display unit 330 for displaying an operation state. LCD display window can display 8 characters and 4 lines in Korean and Japanese, and 16 characters and 4 lines in English. Its built-in backlight also makes it easy to see in low-light environments such as cars.

The portable device 300 is connected to a personal computer through a printer port 312 installed on an outer circumferential surface of the housing, and includes a first interface 316 for interfacing input and output of music file data with the connected personal computer, and a first interface. A data storage unit 314 including a hard disk 318 for storing music file data and table information provided through the unit 316 is included.

The first interface unit 316 converts the number of bits of data from 16 bits to 8 bits and from 8 bits to 16 bits in order to communicate data from the hard disk of the 16-bit communication method to the personal computer through the printer port of the 8-bit communication method. It plays a role. The first interface unit 316 interfaces the communication of the hard disk with the microcomputer of the personal computer 200 or the control unit.

Hard disk 318 is a 2.5-inch hard disk driver, using a conventional hard disk mainly developed for notebooks.

The portable device 300 is installed in the housing, and decompresses the music file data read out from the hard disk 318 to output audio data, and the audio data output through the decoder 322 is analog voice. And a digital-to-analog converter 324 for converting the signal and outputting the converted voice signal through the earphone jack 326 or the line output jack 328.

The portable apparatus 300 reads music file data and table information from the hard disk 318 through the first interface unit 314, displays the read table information on the display unit 330, and displays the key input unit 332. And a controller 334 for providing the selected music file data to the decoder 322. The controller 334 includes a microcomputer 336, a ROM 338, a RAM 340, and a second interface unit 342.

The microcomputer (3360 uses an IBM-PC compatible 16-bit XT one-chip computer. Internally, it operates at 16 bits, but external device connections operate at 8 bits, so the memory interface is very simple, allowing for low power consumption product design. Do.

The ROM 388 has a size of 512 kbytes and includes a BIOS, ROM-DOS, ROMDISK, and the like. The RAM 340 has a size of 512 kbytes and is used as a dot M / device driver resident, an LCD display buffer, an MP3 bit stream temporary storage area, and a program occupying memory.

The second interface unit 342 manages I / O related to a memory, a key input unit, an LCD, a decoder, a printer port, and the like connected to the microcomputer. Communication between the microcomputer 336 and the decoder 322 converts 8-bit parallel data into serial data and provides it to the decoder 322. The second interface unit 342 is configured to process the data at high speed by configuring a printer port therein and supporting a bidirectional mode for communication between the microcomputer 336 and the hard disk.

The portable device 300 includes a battery 346 detachably housed in a housing, and generates an operating voltage VCC from a DC voltage supplied through the external power connection jack 352 or a terminal voltage of the battery. When the personal computer 100 and the data storage unit 314 are connected, the operating voltage is provided only to the data storage unit 314, and when the data storage unit 314 and the control unit 320 are connected, the data storage unit 9314 and the data are provided. The power supply unit 344 provides an operating voltage to the regeneration unit 320. The power supply unit 344 turns on the DC-DC converter 348 for converting an input DC voltage of 6 to 14 V into an operating voltage VCC and outputs the data to the data reproducing unit 320 in the data reproducing mode. It includes a power mode switch 350. Therefore, the connection of the vehicle cigar jack is also possible.

The reproducing operation of the portable device 300 of the present invention configured as described above is as follows.

As shown in FIG. 4, when the power mode switch 350 is first switched to the regeneration mode, an operating voltage is provided to each unit. In the display window of the display unit 330, the group name display and the number of music display are performed (360). When the playlist key is pressed through the key input unit 332 in step 360, the playlist 1 table, the group name display, and the number of songs are displayed (362). When the play list key is pressed in step 362, the play list 2 table and group names are displayed and the number of songs is displayed (364). In this manner, after all the play list tables are displayed, step 360 is displayed again.

When the play / stop key is pressed in step 360, all songs are automatically played (366). That is, in the automatic playing step, the current song number / total number of songs, information of the music to be played back, display of the playback state, etc. are displayed on the display unit. Pressing the down key in this step 366 starts playing the next song (368). In this case, when the up key is pressed, the performance of the previously played song is reproduced by performing step 366. Pressing the play / stop key in step 366 returns to step 360.

When the play / stop key is pressed in step 362, the playing of all the songs in the play list starts (370). In step 370, the current song number / total number of songs and the song information / playback progress indicator to be played are displayed on the display window of the display unit. When the next song is selected using the down arrow key in step 370, the next song of the currently played song is selected and played (372). When the up key is pressed in step 372, step 370 is performed again to play the previous song. In step 370, pressing the play / stop key returns to step 362.

In operation 364, four music names are displayed on the display window when the down key is pressed (374). If the down arrow is pressed while the song name is displayed, the cursor is moved down by one step by pressing the down key, and the cursor is moved upward by one step. When the play / stop key is pressed while the cursor is positioned, playing of the song at which the cursor is positioned starts (378). Similarly, the display window displays the current song number / total number of songs, the information of the song to be played, and the display of the playback progress.

5 shows a display state of the LCD display window in the play list mode. The first and second lines show the playlist name, and the third and fourth lines show the total number of songs.

6 shows a display state of the LCD display window in the playback mode. The first line shows the song number / whole number, the second line shows the song name, the third line shows the bit rate and song size, and the fourth line shows the progress bar.

In the song name display mode, a song name is displayed for each line in Korean 8 characters and English 16 characters.

As described above, according to the present invention, not only the music file and the hard disk installed in the table portable device can be uploaded / down and the audio data can be reproduced by outputting down data between the computer and the portable device. Since the user can select a song in the portable device, the user can improve the convenience of use by easily indexing even after storing hundreds of songs.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Claims (7)

Executing, on a personal computer, a music file management program; Setting a power supply mode of a portable audio recording and playback device connected to the personal computer to a hard disk mode; Downloading or uploading music file data and table information onto the portable audio recording and reproducing apparatus connected through a printer port on the management program; In the portable audio recording and reproducing apparatus, storing data and table information downloaded from the personal computer on a hard disk; Setting a power supply mode of the portable audio recording and playback apparatus to a playback mode; Selecting music file data with reference to the stored table information; Reading the selected music file data from the hard disk; Decoding the read music file data; And And converting the decoded music file data into an analog audio signal for audio output. The method of claim 1, wherein the table information is a song table information and a play list table. A personal computer including a music file management program, for downloading and uploading music file data and digital voice data through an input / output port on the executed management program; And When connecting to the personal computer through the input / output port, only the hard disk and the interface unit apply an operating voltage to download and upload music file data and table information, store the downloaded music file data and table information on the hard disk, In the reproducing mode, the operating voltage is supplied to each unit to read the selected music file data from the hard disk with reference to the stored table information, decode the read music file data, and convert the decoded music file data into an analog music signal. And a portable audio recording and reproducing apparatus for converting and outputting voice data. 4. The recording and reproducing system of computer music file data according to claim 3, wherein the personal computer downloads the music file data via the Internet or a PC communication network. A housing having a form suitable for carrying; A plurality of jacks respectively installed on an outer circumferential surface of the housing and configured to connect earphones and an external power source, respectively; a key input unit for generating a command input via a plurality of keypads installed on the outer circumferential surface of the housing as a key signal; A display unit installed on an outer circumferential surface of the housing and configured to display an operation state; A first interface unit connected to a personal computer through a parallel port provided on an outer circumferential surface of the housing and for interfacing input / output of the connected personal computer with music file data; A hard disk installed in the housing and configured to store music file data and table information provided through the first interface unit; A decoder installed in the housing, for decoding music file data read out from the hard disk; A digital analog converter installed in the housing and converting the data output through the decoder into an analog voice signal and outputting the converted voice signal through the earphone connection jack; A control unit installed in the housing and reading music file data and table information from the hard disk through the first interface unit, displaying the read table information on the display unit, and providing the selected music file data to the decoder through a key input unit. ; And a battery detachably housed in the housing, the operation voltage being generated from a DC voltage supplied through the external power connection jack or a terminal voltage of the battery, and connected to the personal computer and the hard disk. And a power supply unit which provides an operating voltage only to the hard disk and provides an operating voltage to each unit when the hard disk and the control unit are connected to each other. 6. The portable audio recording and reproducing apparatus according to claim 5, wherein the power supply unit includes a switch for selectively providing an operating voltage to each unit except the hard disk and the first interface. 6. The portable audio recording and reproducing apparatus according to claim 5, wherein the power supply unit comprises a 6 to 14 V prevolt DC-DC converter for receiving a battery of an automobile from an external power source.