KR20010037513A - Portable music video reproducing apparatus and method for reproducing thereof - Google Patents

Abstract

PURPOSE: A portable video music player and a method thereof are provided to play a video music file in a portable player having a limited storage capacity, to capture and compress a video of a television broadcasting, and to enable video, music and video music data between portable players to be wirelessly communicated in a short distance. CONSTITUTION: An interface part(410) uploads/downloads video files and audio files by being connected to a host. A storing part(430) stores the plurality of video files and audio files downloaded. An instruction input part(424) selects a music video. A video decoding part decodes a video data and outputs the decoded video signal. An audio decoding part decodes an audio data and outputs the decoded audio signal. A display part displays the decoded video signal. Ann audio output part(470) outputs the decoded audio signal into a sound. If a music video is selected by the instruction input part(424), a system control part(420) reads out the plurality of video files with respect the audio files in response to a link table of the selected music video, from the storing part(430) and provides the audio data to the audio decoding part and provides the video data to the video decoding part.

Description

PORTABLE MUSIC VIDEO REPRODUCING APPARATUS AND METHOD FOR REPRODUCING THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable video music player (hereinafter referred to as a portable device) and a method, and more particularly, to downloading a video file and an audio file through a computer and to reproducing the audio file by combining a plurality of video files. The present invention relates to a portable image music player and a method for displaying a video screen.

Recently, music files and MP3 (MPEG1 Layer3) files have been widely spread by music lovers on the Internet. However, such an MP3 file can only be enjoyed on the Internet through a computer, and thus cannot be enjoyed in a space without a computer.

Therefore, portable MP3 players that allow users to enjoy MP3 music even in places without computers have been developed and introduced as products.

Portable MP3 players can be manufactured in a small size and light weight by using nonvolatile semiconductor memory, or flash memory, as a storage means instead of magnetic tape, and can store several to several tens of songs depending on the capacity of the flash memory. Enjoy high quality music.

In general, MP3 files are composed of 4 to 5 MB of MP3 format data by compressing 40 to 50 MB of CD format data per song to about 1/7 to 1/10. Therefore, when the flash memory has a capacity of 32 MB, about 8 songs can be stored, and when 64 MB, 16 songs can be stored.

However, since the music video, i.e., the video file of the video music, is a video, it is approximately 60MB per song (when compressed to MPEG1), and therefore only one piece of video music can be stored when 64MB flash memory is used. Therefore, there is a problem that the price of a portable device is too expensive because a larger capacity flash memory is required to realize a portable music video player.

In addition, since it takes a lot of time to download a large 60MB music video file through a computer, it was practically very difficult to realize a full video music video on a portable device.

An object of the present invention is to realize the image music in a portable device having a limited storage capacity by combining a plurality of video files consisting of graphics or still images to form a background of one audio file in order to solve the problems of the prior art. The present invention provides a portable video music playback apparatus and method.

Another object of the present invention is to provide a portable video music player and method capable of capturing and compressing video of a television broadcast.

It is still another object of the present invention to provide a portable video music player and method for wirelessly transmitting and receiving video, music, and video music data between portable devices.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing a host connection structure through a personal computer of a portable video music reproducing apparatus of the present invention.

2 is a diagram illustrating a host connection structure through a mobile communication terminal of a portable video music player of the present invention.

Figure 3 is a view showing the appearance of a preferred embodiment of a portable video music playback apparatus according to the present invention.

Figure 4 is a block diagram of a preferred embodiment of a portable video music player according to the present invention.

5 is a memory map configuration diagram for explaining the structure of the static music video of the portable video music player according to the present invention.

6 is a block diagram of an audio file of a static music video according to the present invention.

7 is a block diagram of a video file of a static music video according to the present invention.

8 is a block diagram of a link table of a static music video according to the present invention;

9 is a memory map configuration diagram for explaining the structure of a dynamic music video according to the present invention.

10 is a block diagram of an audio file of a dynamic music video according to the present invention.

11 is a block diagram of a still picture file of a dynamic music video according to the present invention.

12 is a block diagram of a video link table of a dynamic music video according to the present invention;

13 is a view showing a data transmission and reception relationship between portable devices according to the present invention.

<Explanation of symbols for main parts of drawing>

100: music video web server 200: Internet

300: personal computer 310: base station

320: mobile communication terminal 400: portable video music playback device

410; Interface unit 420: system control unit

430: storage unit 440: video codec unit

450: audio codec unit 460: video output unit

470: audio output unit 480: module connection terminal

485: infrared transceiver 490: power supply

500: Headphone 600: TV receiving module

700: camera module

In order to achieve the above object of the present invention, the apparatus of the present invention is connected to the host interface unit for uploading and downloading video files and audio files, a storage unit for storing a plurality of downloaded video files and audio files and A command input section for selecting a music video, a video decoding section for decoding video data and outputting a decoded video signal, an audio decoding section for decoding audio data and outputting a decoded audio signal, and the decoded video signal. A video display associated with the associated audio file in response to a link table of the selected music video, when a music video is selected through the display unit for displaying a video, an audio output unit for audio outputting the decoded audio signal, and the command input unit. Read them from the storage The audio data is provided to the audio decoding unit, and the video data is provided to the video decoding unit.

The method of the present invention comprises the steps of downloading and storing at least one music video consisting of a link table, a video file and an audio file from a host to a portable video music player, and selecting one of the at least one music video; Reading the audio file and the plurality of video files of the selected music video with reference to the link table; and decoding the respective data of the read audio file and the plurality of video files, respectively, and outputting the audio signal and the video signal. Characterized in that provided.

In addition, another method of the present invention comprises the steps of downloading at least one audio file and video files from the host to the portable video music player and storing in the storage unit, selecting any one of the at least one audio file, Reading the selected audio file from the storage, sequentially reading a plurality of related video files from the storage by referring to the video link table of the read audio file, and reading each of the read audio file and the video file And decoding the data to output an audio signal and a video signal, respectively.

Here, the video link table includes a video file group code consisting of a plurality of video files and video display attribute information.

According to another aspect of the present invention, an interface unit for connecting to a host to upload / download video files and audio files, a storage unit for storing a plurality of downloaded video files and audio files, and a command input unit for selecting a music video are provided. And, an audio analog digital converter for converting an external audio signal input through a microphone or an audio input terminal into digital audio data, and a video analog digital for converting an external video signal input through a video input terminal into digital video data. A converting section, a video codec section for decoding video data, outputting a decoded video signal, performing encoding for compressing the captured video data, and providing encoded video data to the storage section; Output decoded audio signal And an audio codec unit for encoding the input audio data and providing the encoded audio data to the storage unit, a display unit for displaying a decoded video signal or a video signal input through the video input terminal, and decoded audio. An audio output unit for audio outputting a signal or an audio signal input through the audio input terminal; and when a music video is selected through a command input unit, a plurality of video files associated with an associated audio file are responded to in response to a link table of the selected music video. The audio data is read from the storage unit and provided to the audio decoding unit, the video data is provided to the video decoding unit, and external audio and video signals are directly supplied to the video and audio output units when external audio and video signals are input. Connect, And a system controller for capturing, compressing and encoding the input video signal in response to the capture command and storing the compressed video signal in the storage unit.

Here, the other device preferably further includes an infrared transceiver for optically modulating and transmitting the video data captured and compressed at the time of the data transmission command, and receiving the optical signal. Therefore, the infrared transceiver unit allows the portable device to exchange music, video and video music data at a short distance.

In addition, another device is a TV receiving module for providing a video signal and an audio signal of a tuned television broadcast coupled to audio and video input terminals, and coupled to the video input terminal to provide an image picked up from a video camera as a video signal. It may be further provided with a camera module.

The interface unit preferably includes any one of a parallel input / output unit for inputting and outputting video and audio data as parallel data, a serial input / output unit for inputting and outputting video and audio data as serial data, or a combination thereof. Here, the serial input / output unit is connected to a mobile communication terminal such as a cellular phone or a PCS phone, a serial input / output method for transmitting and receiving data wirelessly with a host, a serial input / output method for transmitting and receiving data connected to a wireless modem or a data modem, and a universal standard. It may include at least one or more of the bus system or a combination thereof.

In the present invention, the audio data of the audio file is composed of files such as MP1, MP2, MP3, MP4, DOLBY AC-3, AAC, the video file is compressed video screen data in the BMP, GIF, JPEG, M-JPEG method, Or preferably composed of RGB graphic data.

In the present invention, the nonvolatile storage means includes a semiconductor memory device such as an EEPROM, a flash memory, a magnetic disk drive device such as a hard disk (aka CLICK), a large capacity floppy disk (aka ZIP), and an optical recording such as a DVD-RAM or a DVD-ROM. It is preferable to comprise a media device.

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 host connection structure through a personal computer of a portable video music reproducing apparatus of the present invention. The web server 100 provided as a host creates a video music file according to the present invention and provides it on the Internet 200. The portable device 400 is connected to the personal computer 300. The personal computer 300 is connected to the Internet 200 through a modem, and the user accesses a video music site on the Internet 200 and downloads a desired video music file on the hard disk of the personal computer 300. The video music file stored in the hard disk by the user is downloaded to the portable video music player 400. The headphone 500 is connected to the portable device 400.

2 shows a host connection structure through a mobile communication terminal of a portable video music reproducing apparatus of the present invention. In FIG. 2, the portable device 400 is connected to a mobile communication terminal 320 such as a cellular phone or a PCS phone. The web server 100 is connected to the base station 310 through the Internet (200). Therefore, the portable device 400 can connect with the web server through the mobile communication network.

As shown in FIG. 3, the portable device includes a main body 400, a television receiving module 600, and a camera module 700. The television receiving module 600 and the camera module 700 are formed to be detachable from the main body 400. These modules 600 and 700 are electrically connected to the internal circuit of the main body 400 through the connection terminals 480 of the main body 400.

A 320 * 240 size LCD 460 is installed in front of the main body 400, and a touch screen is formed on the LCD 460. Speaker 476, transmission key and capture key are installed on the right side of LCD 460, earphone or headphone jack 474, volume, computer connection connector 413, etc. are installed on the right side, and video input, etc. Connection terminals 480 and infrared transceiver 485 for obtaining are provided. Various selection keys and function keys are provided on the touch screen.

4 shows a block configuration of a portable device according to the present invention. The portable device 400 includes an interface unit 410, a system control unit 420, a system memory 422, a command input unit 424, a nonvolatile storage unit 430, a video codec unit 440, and an audio codec unit 450. ), A video output unit 460, an audio output unit 470, a module connection terminal 480, an infrared transceiver unit 485, and a power supply unit 490.

The interface unit 410 includes a parallel input / output unit 412 and a serial input / output unit 414. The parallel input / output unit 412 is connected to a personal computer or a printer through a computer connection connector 413. It is for downloading data transferred from a personal computer and for uploading data to a personal computer or a printer. The serial input / output unit 414 interfaces with a mobile communication terminal such as a PCS phone or a digital cellular phone, or a data transmission / reception in a serial manner with a modem such as a wireless modem or a data modem. The serial input / output unit 414 also includes a universal standard bus system (USB) port, and can be connected to a personal computer via USB.

The system controller 420 includes a central processing unit, a digital signal processing unit, a memory management unit, a memory control unit, and the like.

The system memory 422 includes DRAM, SRAM, MROM, and the like, and in particular, includes two memory regions M1 and M2 to process screen data in an interleaved manner, thereby enabling high-speed processing.

The command input unit 424 includes a function key such as a transmission key and a capture key and a touch screen.

The storage unit 430 is configured with 8, 16, 32, 64 or 128MB flash memory. Here, the flash memory 430 may be configured to be fixed and removable. Removable can be configured with flash memory cards such as smart media and memory sticks. In addition, the storage unit 430 may include a hard disk, a magnetic disk such as a large capacity floppy disk, and an optical recording / playback apparatus such as a DVD-ROM or a DVD-RAM.

The video codec unit 440 performs decoding and encoding of video data. In decoding, JPEG, M-JPEG-type compressed image screen data is input and decompressed, and the decompressed YUV video data is converted into RGB data and output. At the time of encoding, the video data input from the outside through the analog-to-digital converter 444 is provided as image data compressed in the JPEG and M-JPEG methods.

The audio codec unit 450 performs decoding and encoding of audio data. During decoding, compressed audio data is input by using MP1, MP2, MP3 MP4, DOLBY AC-3, AAC, etc. to decompress and output the decompressed audio data. At the time of encoding, audio data input from the outside through the analog-to-digital converter 454 is compressed by a compression algorithm without a copyright problem and provided as compressed audio data. The analog-to-digital converter 454 samples the audio signal selectively input through the microphone 474 or the module connection terminal 480 through the switching means 456 at 4, 8, 16, 22, 32 or 44.1K sampling frequency. To convert the digital audio data.

The video output unit 460 includes a video output circuit 462 and an LCD 464. The video output circuit 462 provides the LCD 464 with the selected video signal under the control of the system controller 420. The video data provided from the video codec unit 440 and the video signal provided through the module connection terminal 480 are selectively provided to the LCD 464. In addition, the video output circuit 462 may respond to the control of the system controller 420 to visual effect, such as overlay technique, alpha blending technique, TRANSPARENCY technique, ZOOM-IN. / Provides lively images by generating various visual effects by image editing with Zoom-out technique.

The audio output unit 470 includes an audio output circuit 472, an earphone jack 474, and a speaker 476. The audio output circuit 472 converts the audio data provided from the audio codec unit 450 into an analog audio signal, and selectively converts the converted audio signal and the audio signal provided from the module connection terminal 480 under the control of the system controller. Output The output audio signal is output through voice through the speaker 476 or through earphone jack 474 to earphone or headphone.

The module connection terminal 480 includes a power supply terminal, a ground terminal, a video input terminal, an audio input terminal, and a serial type control terminal. Accordingly, the modules 600 and 700 are connected to the system controller 420 through the transceiver 482 to transmit and receive control data.

The television receiving module 600 includes a tuner for receiving television broadcasts and outputs video and audio signals of the received channel. In addition, the television receiving module 600 may include an FM, AM, and a radio receiving function.

The camera module 700 includes a CCD and a CIS image pickup device 710, and picks up an image and outputs it as an RGB signal or a YUV signal.

The infrared transceiver 485 is connected to the system controller 420 to optically modulate and transmit or receive data at a maximum speed of 4Mbps. Therefore, it is possible to exchange music, video, video music data, and the like between portable devices within a short distance, that is, within a distance capable of transmitting and receiving optical signals.

The power supply unit 490 regulates a power supply voltage provided from a battery to provide an operating voltage of each circuit block.

5 shows a memory map for explaining the structure of the static music video of the portable video music player according to the present invention.

A static music video file means that a plurality of video files associated with an audio file are fixed. That is, when the audio is played back, the background screen is fixed to preset screens.

In the static music video method, the memory map includes a system program area 802, a file allocation table area 804, a link table area 806, and a music video file area 808. Each music video file MV1 to MVn includes an audio file A 810 and a plurality of video files V1 to Vi, V1 to Vj, and V1 to Vk 812.

As shown in Fig. 6, each audio file A is composed of a header portion 814 and audio data 816 compressed by the MP3 method.

The header portion 814 includes a file name, file size, header size, video link table size, audio data size, audio data compression scheme, audio data attributes, and the like.

The audio data 816 is composed of audio data compressed by the MP3 method and has a size of about 4 to 5 MB per song.

As shown in FIG. 7, the video file is composed of a header portion 818, video image data 820 compressed by BMP, GIF, JPEG and M-JPEG.

The header unit 818 includes a file name, file size, header size, video data size, image group information, video data compression method, video data attribute, and the like.

The video data 820 is image screen data compressed by BMP, GIF, JPEG, and M-JPEG. The size of the video data 820 is as follows.

In the case of 320 * 240 screen size, one pixel data of YUV method can be represented by 1.5 bytes, and thus has 115.2KB of data amount per screen. When such video data is compressed to 30: 1 using the JPEG method, it becomes 3.8KB. Further, in the case of graphic data, when it is composed of 5: 6: 5 RGB 2-byte data of 8 * 8 size, the data can be composed of 128 bytes.

Therefore, assuming that the video screen changes every 5 seconds on average, approximately 48 video screens are required for a song having a playback time of 4 minutes.

Therefore, the amount of video data per song is 48 * 3.8KB = 1,824KB, so that the size of the entire music video file can be approximately 6MB.

If the memory size is 64MB, it can store approximately 10 static music video files.

8 shows a configuration of a link table of the static music video file method according to the present invention. That is, the link table 806 includes the initial address information MV1 of the music video file, the video file sequence, and the display information DT, DP, DS, PE. Display information includes display time, display position, display size, visual effects, and the like.

The playback operation of the static music video is as follows.

First, a plurality of music video files are downloaded from a computer and stored in the storage 430. The system controller 420 prepares a storage location of the downloaded music video file as a file allocation table (FAT).

When the user selects the icons of the songs displayed on the LCD screen through the touch screen of the command input unit, the QUICK PREVIEW screen is displayed to index the contents of the songs. The user selects a music video to watch through the quick preview screen. The system controller 420 refers to the link table 806 in response to the input command, and reads the corresponding audio file 810 from the storage 430 based on the initial address information of the selected music video MV1. The header portion 814 and the audio data 816 of the read audio file are separated. The separated audio data 816 is provided to the audio codec unit 450. The system controller 420 sequentially reads the video files V1 to Vi and provides them to the video codec unit 440 in response to the sequence information of the link table. The system controller 420 controls the video output circuit 462 in response to the video attribute information DT, DP, DS, and PE information to control the display time, display position, display size, visual screen effect, etc. of the decoded video data. do.

The audio data provided to the audio codec unit 450 is decompressed and provided to the audio output unit 470 as audio data. The audio output unit 470 converts the audio data into an analog signal and amplifies the earphone jack 474 or the like. Audio is output through the speaker 476.

Meanwhile, when the television module 600 and the camera module 700 are combined with the main body and the television mode or the camera mode is selected, the television module 600 and the camera module 700 may be selected. That is, it can be used as a portable television or a digital video camera.

When simply watching a video using such a module, the analog video signal is converted into a simple digital signal or output directly connected to the LCD through an analog video output circuit without undergoing a separate digital signal processing and compression process. Audio signals are similarly output to the speakers directly through the audio output circuits without going through digital signal processing and compression, thus avoiding the use of video / audio buffer memory, making signal processing easier with real-time display and lower power. It is possible to capture a desired video screen instantly.

That is, when a capture key is selected to capture a desired video screen while watching a television broadcast, the system controller 420 controls the analog-to-digital converter 444 to convert the video signal into digital video data and convert the converted video data into video. The video screen may be captured by compressing and encoding the codec unit 440 and then storing the encoded data in the storage unit 430.

In addition, as shown in FIG. 13, the captured video screen can be transmitted to another portable device. That is, when the transmission key is selected, the system controller 420 reads the selected capture screen from the storage unit 430, optically modulates the read video data, and transmits the same through the infrared transceiver 485.

9 shows a memory map structure for explaining the structure of a dynamic music video of a portable apparatus according to the present invention. The dynamic music video is a music video in which the backgrounds of the same song are not fixed to specific screens, but the backgrounds are changed randomly every time it is played. That is, in the static music video, since the background is fixed, the same wallpaper is displayed every time the playback is performed, but in the dynamic music video, the background is changed randomly every time the playback is performed, thereby displaying a more vibrant background.

The memory map of the dynamic music video includes a system program area 802, a file allocation table area 804, a video file area 822, and an audio file area 824.

The audio file area 824 stores a plurality of audio files A1 to An. As shown in Fig. 10, each audio file is composed of a header portion 830, a video link table 832, and audio data 834 compressed by the MP3 method.

The header unit 830 includes a file name, file size, header size, video link table size, audio data size, audio data compression method, audio data attribute, and the like.

As shown in FIG. 12, the video link table 832 includes information of a plurality of video files IM1, IM2, G2, IM1, G1, ..., IMj (j &lt; = n) related to audio data. Includes a code 840 and display attribute information 842 corresponding to the image region and the graphic file name. The display attribute information 842 includes a display time 844, a display position 846, a display size 848, a screen effect 850, and the like.

The audio data is composed of audio data compressed by the MP3 method and has a size of about 4 to 5 MB per song.

The video file area 822 is largely divided into an image screen file area 826 and a graphic file area 828. The video screen file area 826 is composed of a plurality of image group areas IM1 to IMn, and a plurality of different video screen files V11 to Vmn having the same attribute image are stored in each image group area. For example, IM1 is a group of video screen files divided by images such as a person and IM2 by a landscape.

As shown in Fig. 11, each video picture file is composed of a header portion 836, video data 838 compressed by JPEG and M-JPEG. The graphic file area 828 is composed of RGB graphic files G1 to Gn.

The header unit 836 includes a file name, file size, header size, video data size, image group information, video data compression method, video data attribute, and the like.

The video data 838 is video data compressed by BMP, GIF, JPEG, and M-JPEG, and the size thereof is as follows.

In case of image data, one pixel data of YUV method can be represented by 1.5 bytes, so if the screen size is 320 * 240, it has 115.2KB of data per screen, and the screen size is 240 * 160 (1/2). Size) and 160 * 120 (1/4 size) have 57.6KB and 28.8KB respectively. When such image data is compressed to 20: 1 using the JPEG method, it is 5.7KB, 2.9KB, and 1.4KB, respectively. Further, in the case of graphic data, when it is composed of 5: 6: 5 RGB 2-byte data of 8 * 8 size, the data can be composed of 128 bytes.

Therefore, in the embodiment of the present invention, when using 64MB of flash memory, 48MB is allocated as an audio region to store 12 MP3 format audio files, and various sizes, 320 * 240, 240 * 160, When a video file is composed of 20%, 50%, and 30% of 160 * 120 size video screens, approximately 5060 video files of various video screens can be stored.

Therefore, each of the 12 audio files can constitute a background video screen by a combination of several tens to hundreds of video screens among the 5060 video screens. For example, if one screen is displayed per second, 240 video screens or graphic screens per song are required. Therefore, 240 video screens are randomly selected from 5060 screen information, and various background image screens can be displayed at low power through minimal memory usage.

The operation of the present invention configured as described above is as follows.

First, the storage unit 430 downloads and stores video files associated with a plurality of audio files from a computer. The system controller 420 prepares a storage location of the downloaded audio file and the video file in a file allocation table (FAT).

When the user selects the icons of the songs displayed on the LCD screen through the touch screen of the command input unit, the QUICK PREVIEW screen is displayed to index the contents of the songs. The user selects a music video to watch through the quick preview screen. The system controller 420 reads the corresponding audio file from the storage 430 based on the location information of the audio file of the selected music video by referring to the file allocation table FAT in response to the input command. The video link table 832 and the audio data 834 are separated with reference to the header 830 of the read audio file. The separated audio data is provided to the audio codec unit 450. The system controller 420 sequentially reads the video file and the graphic file of the image group and provides the video codec to the video codec unit 440 with reference to the video link table. Here, the system controller 420 randomly selects a plurality of video screen files corresponding to the image group in response to the code of the image group, and loads the selected video screen file. Such a configuration processes various combinations and mixing of a plurality of video screens and graphic screens using the video display property information 806 and 840 to show various visual effects, so that the screen of the music video can be configured in various ways.

The audio data provided to the audio codec unit 450 is decompressed and provided to the audio output unit 470 as audio data. The audio output unit 470 converts the audio data into an analog signal and amplifies the earphone jack 474 and Audio is output through the speaker 476.

The video data provided to the video codec unit 440 is decompressed and provided to the video output unit 460 as audio video data. The video output unit 460 converts the provided video data into RGB data and converts the converted RGB data into a system. It is synthesized with RGB graphic data provided from the control unit 420 and displayed on the LCD.

The system controller 420 controls the display time, display position, display size, etc. of each read image screen, graphic screen with reference to the video display property information, and mutually synthesizes and mixes at least one video screen and graphic screen. You can produce more various screen effects.

In addition, text can also be combined to insert a variety of character information, such as lyrics, greetings, signs can be displayed on the LCD.

In the present invention, each of the static music video and the dynamic music video has been described, but a system in which these are mixed is also possible.

As described above, in the present invention, by combining and displaying a video screen of several thousands of graphic data and a background of the associated audio file, a plurality of music videos can be realized with limited memory capacity and low power of the portable device. Do. It is also possible to provide various music videos on the Internet via a computer by mutually combining audio files and video files by video link information.

In addition, in the present invention, the analog video signal provided from the outside is converted into a simple digital signal or directly connected to the LCD through an analog video output circuit without a separate digital signal processing and compression process, and the audio signal is similarly Since it is connected to the speaker directly through the audio output circuit without going through the digital signal processing and compression process, it is easy to process the signal with real time display and low power by avoiding the use of video / audio buffer memory. It is possible to capture the screen momentarily.

In addition, since it is possible to transmit music, video, video music data, etc. including captured screens to other portable devices in a short distance through optical modulation, the portable devices can be used interactively.

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 (21)

An interface unit connected to a host to up / down the video file and the audio file; A storage unit for storing a plurality of downloaded video files and audio files; A command input unit for selecting a music video; A video decoding unit for decoding the video data and outputting the decoded video signal; An audio decoding unit for decoding audio data and outputting a decoded audio signal; A display unit for displaying the decoded video signal; An audio output unit for audio outputting the decoded audio signal; And When a music video is selected through the command input unit, a plurality of video files related to an associated audio file is read from the storage unit in response to a link table of the selected music video, and audio data is provided to the audio decoding unit, and the video data is stored in the audio data unit. And a system controller provided in the video decoding unit. The portable video music reproducing apparatus according to claim 1, wherein the video file comprises any one of image screen data, graphic screen data, or a combination thereof compressed in BMP, GIF, JPEG, M-JPEG, or the like. The apparatus of claim 1, wherein the audio file is audio compressed data such as MP1, MP2, MP3, MP4, DOLBY AC-3, AAC, and the like. The optical disk recording / reproducing apparatus of claim 1, wherein the storage unit comprises a nonvolatile semiconductor memory device such as an EEPROM and a FLASH memory, a magnetic disk device such as a hard disk and a large capacity floppy disk, or an optical disk recording / playback device such as a CDRW, DVD-ROM, DVD-RAM, or the like. Portable video music playback device, characterized in that any one of. The portable video music reproducing apparatus according to claim 1, wherein the display unit is any one of flat panel display devices such as LCD and FED. The apparatus of claim 1, wherein the link table includes file name information of an audio file and a plurality of video files associated with each music video. 2. The portable video music according to claim 1, wherein the selection information of the link table is present in an audio file of each music video, and the link table contents include file name and attribute information of a plurality of video files associated with the audio file. Playback device. Downloading and storing at least one music video composed of a link table, a video file, and an audio file from a host to the portable video music player; Selecting any one of the at least one music videos; Reading an audio file and a plurality of video files of a selected music video with reference to the link table; And And decoding each data of the read audio file and the plurality of video files, respectively, and outputting an audio signal and a video signal. 10. The method of claim 8, wherein the video file comprises any one of video screen data compressed in BMP, GIF, JPEG, and M-JPEG, graphic screen data, or a combination thereof. The method of claim 8, wherein the audio file is audio compressed data such as MP1, MP2, MP3, MP4, AAC, or DOLBY AC-3. Downloading at least one audio file and video file from the host to the portable video music player and storing the same in a storage unit; Selecting any one of the at least one audio file; Reading the selected audio file from a storage unit; Sequentially reading a plurality of related video files from a storage by referring to a video link table of the read audio file; And And decoding each data of the read audio file and the video file, respectively, and outputting an audio signal and a video signal. 12. The method of claim 11, wherein the video link table includes a video file group code consisting of a plurality of video files and video display attribute information. The method of claim 12, wherein the system controller randomly reads any one of a plurality of video files included in the group by referring to the video file group code of the video link table. . The method of claim 12, wherein the video attribute information of the video link table includes any one of a display time of a display screen, a display position, a display size, a visual effect, or a combination thereof. An interface unit connected to a host to up / down the video file and the audio file; A storage unit for storing a plurality of downloaded video files and audio files; A command input unit for selecting a music video; An audio-analog-digital converter for converting an external audio signal input through a microphone or an audio input terminal into digital audio data; A video analog to digital converter for converting an external video signal input through a video input terminal into digital video data; A video codec unit for decoding video data, outputting a decoded video signal, compressing and encoding captured video data, and providing encoded video data to the storage unit; An audio codec unit for decoding audio data, outputting a decoded audio signal, encoding input audio data, and providing encoded audio data to the storage unit; A display unit for displaying the decoded video signal or a video signal input through the video input terminal; An audio output unit for audio outputting the decoded audio signal or the audio signal input through the audio input terminal; When a music video is selected through the command input unit, a plurality of video files related to an associated audio file is read from the storage unit in response to a link table of the selected music video, and audio data is provided to the audio decoding unit, and the video data is stored in the audio data unit. Provided to the video decoding unit, when the external audio and video signal input, the external audio and video signal is directly connected to the video and audio output unit, and in response to a capture command to capture the input video signal and store in the storage unit Portable video music playback device comprising a system control unit. 16. The portable video music reproducing apparatus according to claim 15, wherein the apparatus further comprises an infrared transmitting / receiving unit for optically modulating and transmitting music, video, video music data, etc. at the time of transmission command, and receiving an optical signal. 16. The portable video music reproducing apparatus according to claim 15, wherein the apparatus further comprises a television receiving module coupled to audio and video input terminals for providing a video signal and an audio signal of the selected television broadcast. The apparatus of claim 15, wherein the apparatus further comprises a camera module coupled to the video input terminal to provide an image picked up from a video camera as a video signal. The method of claim 15, wherein the interface unit And a parallel input / output unit for inputting and outputting video and audio data as parallel data, a serial input and output unit for inputting and outputting video and audio data as serial data, or a combination thereof. 20. The serial input / output unit of claim 19, wherein the serial input / output unit is connected to a mobile communication terminal such as a cellular phone or a PCS phone to serially input / output for transmitting and receiving data wirelessly with a host, and a serial for transmitting and receiving data in connection with a wireless modem or a data modem. A portable video music playback device comprising at least one of an input / output method, a universal standard bus method, or a combination thereof. 16. The apparatus of claim 15, wherein the storage unit is any one of a semiconductor memory device such as an EEPROM and a FLASH memory, a magnetic disk device such as a hard disk and a large capacity floppy disk, or an optical disk recording / playback device such as a CDRW, DVD-ROM, DVD-RAM, or the like. Portable video music player, characterized in that one.