KR20060099057A - Host mp3 player device - Google Patents

Abstract

The disclosed host MP3 player device is an audio device for reproducing sound information stored in an audio file including an MP3, WAV, WMV file, etc., which is one of computer music files, and has a plurality of input terminals exposed on one surface thereof. Including an MP3 player having a detachable portion for installing a USB flash drive (hereinafter referred to as an UFD) interface unit, and a UFD having a built-in chip in which the audio file is stored and a USB terminal formed in a predetermined pattern exposed on one surface as an output terminal of the chip The UFD is inserted into and detached from the MP3 player, and the input terminal is electrically connected to the USB terminal.

According to the above configuration, the audio file is stored in the UFD, and if necessary, the MP3 player can be detachably mounted so that the audio file stored in the UFD can be played through the MP3 player.

MP3 player, USB flash drive, cradle, audio device.

Description

Host MP3 player device

1 is a perspective view of a host MP3 player device according to an embodiment of the present invention;

2 is an exploded perspective view of FIG. 1;

3 is a rear view of FIG. 1;

4 is a block diagram showing an example of an internal configuration of the MP3 player shown in FIG. 1;

5 is a block diagram showing the configuration of the cradle shown in FIG.

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

100: MP3 player 200: USB flash drive

300: cradle 302: frequency selection switch

204: USB connector 306: DC / DC jack

308: auxiliary input jack 310: holder

312 input and output connector 320 FM transmitter

322: antenna 332: LED

400: Computer 500: Earphone

The present invention relates to a host MP3 player device, and more particularly, to mount an MP3 player in a cradle to output an audio file (MP3, WAV, WMV file, etc.) to an external audio device, and to the cradle. The present invention relates to a host MP3 player device capable of playing an audio file stored in a USB mass storage through an MP3 player using a USB connector.

The MP3 player is an audio device for playing sound information stored in audio files (hereinafter referred to as audio files) such as MP3 files, WAV files, and WMV files, which are one of computer music files. At the same time, the market area is gradually expanding due to the increase in capacity.

MP3 files are short for Moving Picture Experts Group (MPEG) Audio Layer-3. MP3 music files can be stored as CD-like sound quality by compressing the original sound to 1/12 using the algorithm of MPEG1. Music files.

The MP3 player connects to a computer through a USB port and downloads and stores the audio file stored in the computer in the memory so that the user can play and listen to it later.

The USB (Universal Serial Bus) is a device that allows a peripheral device to be conveniently connected to a computer. Recently, a plurality of peripheral devices can be connected to a serial port, and data transmission and reception speed is widely used.

This MP3 player is a way to listen to music through the earphones inserted into the earphone jack, there was a problem that several people can not listen together in the car or at home.

Meanwhile, a USB flash drive (UFD) is a drive that allows data stored in a flash memory to be used in a computer, and has a large data storage capacity and is easy to use.

The UFD has a shape in which a USB control unit and a flash memory are built in a main body, and a USB terminal is exposed outside. Such UFDs are becoming smaller in size.

MP3 players generally play audio files by inserting internal memory or externally removable memory sticks, but there is no disclosure about playing audio files by inserting the above-mentioned UFDs. Development of an MP3 player is necessary.

The present invention has been made in order to solve the above problems, and can be used to store the audio file in the UFD and plug in the UFD if necessary, it is used exclusively for the MP3 player having a USB connector on the cradle on which the MP3 player is mounted The main purpose of the present invention is to provide a host MP3 player device that can play audio files of USB mass storage using a USB connector by allowing the plug-in to be used as well as other UFDs.

Another object of the present invention is to provide a host MP3 player device that can play an audio file of an MP3 player and listen to it through an audio device provided in a vehicle or home.

In order to achieve the above object, the host MP3 player device according to an embodiment of the present invention, the audio for reproducing the sound information stored in the audio file, such as MP3, WAV, WMV files, which is one of the computer music files An apparatus comprising: an MP3 player having a detachable portion provided with a USB flash drive (hereinafter referred to as an UFD) interface unit provided with a plurality of input terminals exposed on one surface thereof, and a chip storing the audio file embedded therein as an output terminal of the chip. Including a UFD provided with a USB terminal formed in a predetermined pattern exposed on one surface, the UFD is attached to and detached from the detachable portion of the MP3 player, the input terminal is in contact with the USB terminal is electrically connected.

Preferably, in addition to the above-described configuration, an input / output connector electrically connected to the MP3 player, a frequency selection switch for selecting synchronization with an FM frequency of an external audio device, and audio music data reproduced by the MP3 player are connected to the input / output connector. When input through, the cradle including the FM transmitter for transmitting the audio music data to the FM frequency selected by the frequency selection switch to the external audio device via the antenna is configured to further include.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the host MP3 player according to the present invention.

1 is a perspective view of a host MP3 player according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a rear view of FIG. 1.

As shown, the host MP3 player device according to the present invention includes an MP3 player 100, which is an audio device for playing sound information stored in an audio file such as an MP3, WAV, WMV file, which is one of the music files of the computer 400, In addition, the UFD 200 is inserted into the MP3 player 100 to provide the MP3 player 100 with the stored audio file for playback.

The UFD 200 is detachably attached to the detachable portion 108 formed on the rear surface of the MP3 player 100.

The UFD 200 has a chip (flash memory) in which an audio file can be stored, and is provided with a USB terminal 202 formed in a predetermined pattern exposed on one surface as an output terminal of the chip (see FIG. 4).

In addition to the MP3 player 100 and the UFD 200, an MP3 player 200 is mounted to provide the MP3 player 100 with an audio file stored in a USB mass storage and to play the audio file. It may be configured to further include a cradle 300 to be sent to the device.

As illustrated in FIG. 4, the MP3 player 100 includes a CPU 122 for system control, a battery 120 for power supply, and buttons for selecting functions such as selecting, playing, and stopping music. The keypad 102, the computer interface 132 connected to the computer 400 to download the audio file from the computer 400, the decoder 128 for restoring the audio file, and the restored audio file. And a DAC unit 126 for converting a digital signal into an analog signal, and an earphone jack 106 for outputting the converted analog signal to the earphone 500.

The present invention further includes an UFD interface unit 136 connected to the UFD 200 which stores the audio file downloaded from the computer 400 and provides the MP3 player 100 in addition to the general MP3 player driving system. .

The UFD interface unit 136 is provided with an input terminal 136a for electrically connecting with the USB terminal 202 of the UFD 200.

When the UFD 200 in which the audio file is stored is inserted into the detachable part 108 of the MP3 player 100, the input terminal 136a and the UFD 200 of the UFD interface part 136 of the MP3 player 100 are mounted. The USB terminal 202 is electrically connected to enable playback of the audio file.

In addition, the MP3 player 100 further includes a cradle interface unit 130 connected to the cradle 300 when the MP3 player is mounted to the cradle 300.

When the cradle interface unit 130 is inserted into the mounting hole 310a formed in the holder 310 of the cradle upper part, the cradle interface unit 130 is formed under the MP3 player 100 to be electrically connected to the cradle 300. .

In the description of the MP3 player, reference numeral 104 denotes an LCD display window provided on the front of the MP3 player, and 102a or 102b is a keypad for selecting a mode or playing / stopping music.

The cradle will be described in more detail with reference to FIG. 5, and the frequency selection switch 302 provided at the lower front surface of the cradle 300 selects synchronization with the FM frequency of the car audio device mounted on the vehicle. .

In the present invention, two stages and three stages of PLL stops can be selected according to the output of a noise-free and clean car audio device, and two frequencies are 87.7 MHz and 87.9 MHz, for example.

The PLL is a phase locked loop and is a frequency negative feedback circuit configured to maintain a constant frequency of an output signal at all times.

The USB connector 304 is provided at the lower side of the cradle to connect an external USB mass storage including another UFD in addition to the UFD 200 mounted to the MP3 player 100 to cradle audio files stored in the USB mass storage. Play through the MP3 player 100 mounted on the 300.

The USB connector 304 is configured to listen to music by inserting a UFD of a shape other than the UFD 200 used in the MP3 player 100, in which case the MP3 player 100 is cradle 300. Should be mounted on the

The input / output connector 312 connected to the USB connector 304 connects the MP3 player 100 to the cradle 300, through which the audio file of the USB mass storage is transferred to the MP3 player 100 through the input / output connector 312. Is provided).

The input / output connector 312 is provided on the inner upper surface of the mounting hole 310a formed in the holder 310 of the cradle upper portion and is electrically contacted with the cradle interface unit 136 provided in the lower portion of the MP3 player 100. Connected.

The auxiliary input jack 308 provided at the bottom of the rear of the cradle 300 is FM through the left and right input lines (R_IN, L_IN) when the music data to be played on the external playback device (cassette tape player / CD player, etc.) is input Send to transmitter 320.

Meanwhile, the music data ROUT_TX and LOUT_TX of the audio file reproduced by the MP3 player 100 are also sent to the FM transmitter 320 through the left and right input lines R_IN and L_IN.

At this time, when the external playback music data and the music data played on the MP3 player 100 enter the left and right input lines at the same time, the music data played on the MP3 player 100 is automatically disconnected.

When an external player is inserted into the auxiliary input jack 308, music can be heard through the car audio device without the MP3 player 100.

When the FM transmitter 320 inputs the externally reproduced music data or the music data played by the MP3 player, the FM transmitter 320 performs signal conversion on the music data, and then loads it on the FM frequency selected by the frequency selection switch 302. It transmits to a car audio device through the antenna 322.

The DC / DC jack 306 provided side by side of the auxiliary input jack 308 converts the output voltage of the vehicle cigar jack (for example, DC 12V) into the cradle driving voltage (DC 5V) and cradle 300. Internally supplied, this voltage is used to charge the battery and to power the mains.

When a vehicle cigar jack is inserted into the DC / DC jack 306 to supply power, the LED 332 emits light to brighten a portion of the holder 310 of the cradle.

Looking at the operation and effects of the above configuration, in the case of consisting only of the MP3 player 100 and the UFD 200 first, the audio file is stored in a compressed state in the portable UFD 200, and then the audio file stored in the UFD The MP3 player 100, which is a dedicated player, restores the original sound and plays the sound through the earphone 500.

The storage of the audio file as a sound source, that is, the memory, may use the UFD 200, which may be used for external purposes, as a storage space of the audio file.

In the case of the MP3 player 100, the UFD 200, and the cradle 300, the audio file is stored in the compressed state in the UFD 200, and the audio file stored in the UFD 200 is the MP3 player. Through 100, the original sound is restored and reproduced.

The reproduced music data is sent to the FM transmitter 320 through the input / output connector 312 and left and right input lines R_IN and L_IN of the cradle 300, and the reproduced music is transmitted to the FM frequency in the FM transmitter 320. By sending it to a car audio device, you listen to music through the car audio device.

In the above configuration, when another UFD or USB mass storage is inserted into the USB connector 304 of the cradle 300, the audio file stored in the compressed state in the other UFD or USB mass storage is connected to the input / output connector 312. Send it to the MP3 player 100 that is a dedicated player through the MP3 player to restore the original sound to play.

The reproduced music data is sent to the FM transmitter 320 through the input / output connector 312 and the left and right input lines R_IN and L_IN, and the FM transmitter 320 carries the reproduced music on the FM frequency and transmits it to the car audio device. This allows you to listen to music on your USB mass storage through your car audio device.

As described above, in the configuration of the MP3 player 100, the UFD 200, and the cradle 300, the music of the USB mass storage can be reproduced through the USB connector 304, and the FM transmitter 320 is loaded at the FM frequency. By sending it, you can listen through the car audio device.

When an external playback device such as a cassette tape player or a CD player is inserted into the auxiliary input jack 308 and constitutes an external playback device and a cradle 300, the external playback music data by the external playback device is input / output connector 312. And the left and right input lines (R_IN, L_IN) are sent to the FM transmitter 320, and the FM transmitter 320 carries the reproduced music on the FM frequency to the car audio device to listen to the external playback music through the car audio device. do.

As described above, in the configuration of the external player and the cradle, the music reproduced by the external player is transmitted to the car audio device by the FM transmitter 320 so that it can be heard through the car audio device.

In the above, the car audio device provided in the vehicle is exemplified as the audio device transmitted to the FM transmitter 320, but the music can be transmitted to the home audio device.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, according to the present invention, the audio file is stored in the UFD, and if necessary, the UFD can be inserted into the MP3 player, and the cradle in which the MP3 player is mounted is provided with a USB connector, which is used exclusively for the MP3 player. In addition to UFDs, you can plug and use other shapes of UFDs to play audio files from USB mass storage using the USB connector.

According to the present invention, an audio file of an MP3 player can be played and listened to through an audio device provided in a vehicle or a home.

Claims (8)

An audio device for reproducing sound information stored in an audio file such as an MP3, WAV, or WMV file, which is one of computer music files, and a USB flash drive (UFD) interface unit having a plurality of input terminals exposed on one surface thereof An MP3 player having a detachable unit installed therein; And A UFD having a built-in chip in which the audio file is stored and a USB terminal formed in a predetermined pattern exposed on one surface as an output terminal of the chip; The host MP3 player device of the MP3 player is attached to and detached from the UFD, the input terminal is electrically connected to the USB terminal. The method of claim 1, An input / output connector electrically connected to the MP3 player, a frequency selection switch for selecting synchronization with an FM frequency of an external audio device, and audio music data reproduced by the MP3 player when inputted through an input / output connector And a cradle comprising an FM transmitter for loading data to an FM frequency selected by a frequency selection switch and transmitting the data to an external audio device through an antenna. The method of claim 2, The MP3 player is mounted to the mounting hole formed in the holder on the cradle, the host MP3 player device characterized in that the lower surface of the MP3 player is further provided with a cradle interface unit in contact with the input and output connector on the upper surface of the holder formed with the mounting hole. The method of claim 2, The cradle further includes an auxiliary input jack connected to an external playback device such as a cassette tape player or a CD player, and when music data reproduced by the external playback device is input to the FM transmitter through the auxiliary input jack, A host MP3 player device, characterized in that the FM transmitter transmits this externally reproduced music data to an FM audio frequency selected by a frequency selection switch and to an external audio device through an antenna. The method of claim 4, wherein The audio reproduction music data and the external reproduction music data are input to the FM transmitter in a stereo type through left and right input lines, but when the two music data enter the left and right input lines together, the audio reproduction music data is automatically cut off. Host MP3 Player Device. The method of claim 2, The frequency selection switch is a host MP3 player device, characterized in that for selecting two stages of the frequency and the PLL (Phase Locked Loop) stop (Stop) according to the output of the audio device. The method of claim 2, The cradle further includes a USB connector that is electrically connected to an input / output connector and to which an external USB mass storage for storing an audio file is inserted, thereby storing the stored audio file of the USB mass storage through an MP3 player. Host MP3 player device, characterized in that the playback. The method according to claim 2 or 7, The cradle further includes a DC / DC jack for supplying power to the cradle by converting an output voltage of the vehicle cigar jack into a cradle driving voltage, and the FM transmitter transmits music data to a car audio device of the vehicle. Host MP3 player device.

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