CN1233158C - Multifunctional video disk player supporting download playing - Google Patents

Abstract

The present invention provides a multifunctional video disc machine supporting downloading and playing. The multifunctional video disc machine supporting downloading and playing can be connected with a computer to download digital playing video and audio data by using a universal serial bus controller additionally arranged, and the downloaded digital video and audio data can be stored in a built-in flash memory or an intelligent medium interface card inserted in an intelligent medium interface so as to be played. When the connection end of the universal serial bus controller is connected with a digital camera and a printer simultaneously, the multifunctional video disc machine supporting downloading and playing can be used as a camera printer. In addition, the digital video and audio data can be converted into the format selected by the user by using a video and audio data coding unit additionally arranged, and can also be selectively stored in the intelligent medium interface card, a portable memory device of the universal serial bus interface, or the built-in flash memory.

Description

Multifunctional DVD player supporting download and playback

technical field

The invention relates to a video disc player, and in particular to a multifunctional video disc player that supports downloading and playing network digital video and audio data.

Background technique

With the development of the Internet, many digital audio-visual files in formats such as MP3, WMA and MPEG4 (all common audio-visual recording formats) are provided on the network for users to download and play. Because these files use high-efficiency compression technology, their file capacity is small, but usually they can only be played on a computer or downloaded to an MP3 player or a dedicated player. Although today's video disc players such as VCD, DVD (common video recording format) players, etc. also support digital music files in MP3 and WMA formats, they must be downloaded on a computer and then burned to the disc before they can be placed. Play on DVD player. This is really wasteful and also time-consuming and troublesome for some MP3 and WMA music files that are only expected to be used for a short time.

As shown in FIG. 1 , it is a circuit block diagram of a known recordable video disc player. Shown in the figure, this known recordable video disc machine 100 comprises readable and writable optical disc drive 105, hard disk drive 110, CSS/CPPM (Content Scrambling System, content scrambling anti-copy system/Copy Protection forPrerecorded media, can Recording media anti-copy) encryption decoding unit 115, MPEG4/2/1 video and audio data decoding unit 120, flash memory 121, first synchronous dynamic memory 123, first multiplexer 125, second multiplexer 130, NTSC/PAL (common TV system) video digital-analog converter 135, audio digital-analog converter 140, audio-visual data playback engine 145, MPEG2/1 audio-visual data encoding unit 150, second synchronous dynamic memory 151, NTSC/PAL video analog-digital converter 155. Audio analog-to-digital converter 160, FPGA (Field Programmable Gate Arrays, field programmable gate array) controller 165, liquid crystal display panel 170, infrared receiver 175 and keyboard 180.

When playing a video, an optical disc containing audio-visual programs can be placed in the optical disc drive 105 to read the audio-visual data to be played. This audio-visual data will be deciphered and decoded into digital video data and digital Audio data, decoded digital video data and digital audio data enter NTSC/PAL video digital-to-analog converter 135 and audio digital-to-analog converter 140 through the selection of the first multiplexer 125 and the second multiplexer 130 respectively, NTSC/PAL video digital-to-analog converter 135, audio digital-to-analog converter 140 and respectively convert the incoming digital video data and digital audio data into analog signals through the video output terminal, video S output terminal or Y/CB/CR (brightness/ Bright blue difference/bright red difference) terminal and left channel output terminal, right channel output terminal output, wherein the digital audio data can also be directly output through the S/PDIF (Sony/Philips Digital Interface, digital interface) output terminal without conversion.

In the same process of recording audio and video data, the analog signal provided by the external audio and video equipment can be input through the video input terminal or video input S terminal, left channel input terminal, and right channel input terminal, and then respectively through the NTSC/PAL video analog-to-digital converter 155 and audio analog-to-digital converter 160 to convert digital video data and digital audio data. The digital video data and digital audio data are operated by the MPEG2/1 audio-visual data encoding unit 150 in cooperation with the second synchronous dynamic memory 151, and the unencoded digital video data and digital audio data are passed through the first multiplexer 125 and the second multiplexer 125 respectively. The selection of the multiplexer 130 makes it enter the NTSC/PAL video digital-to-analog converter 135 and the audio digital-to-analog converter 140, and converts it into an analog signal through the video output terminal, the video output S terminal or the Y/CB/CR terminal and the left sound Channel output terminal, right channel output terminal output playback.

Wherein, the digital video data and digital audio data encoded by the MPEG2/1 audio-visual data encoding unit 150 are controlled by the audio-visual data playback engine 145 and written into the optical disc drive 105 or the hard disk drive 110 for storage to achieve the purpose of recording audio-visual programs. The operation of this known recordable video disc player 100 can be controlled by the user through the cooperation of the FPGA controller 165 , the liquid crystal display panel 170 , the infrared receiver 175 and the keyboard 180 .

It is known that today's DVD player not only has the playback function but cannot record favorite audio-visual programs, it can record audio-visual programs played via AV terminals or S terminals with analog audio-visual inputs as VCD or DVD discs, but It cannot be transcribed into files in network media video and audio formats such as MP3, WMA and MPEG4, and it is even impossible to directly record files in formats such as MP3, WMA and MPEG4, and store them on a smart media interface card (smart media card) or In a portable storage device with a Universal Serial Bus (USB) interface.

Contents of the invention

In view of this, the present invention provides a multifunctional video disc player that supports downloading and playing, which can be connected to a computer to directly record and download files in formats such as MP3, WMA, JPEG, and MPEG4, and can directly play MP3, Digital audio-visual files in WMA, JPEG, MPEG4 and other formats, or transcribe the played audio-visual programs into files in the selected format, and store them in a smart media interface card, a portable storage device with a universal serial bus interface or internal built in flash memory. In addition, it can be directly connected with a digital camera or a digital video camera and a printer to achieve the functions of dynamic display and recording or static printing.

To achieve the above and other purposes, the present invention provides a multifunctional video player supporting downloading and playing. The multifunctional video player supporting downloading and playing includes: a disc drive, a bus controller and a control center unit. Wherein, the optical disc drive is used for reading the first digital audio-visual data placed in the optical disc of the optical disc drive. The bus controller has a first connection end for connecting with a computer and controlling communication with the computer. The control central unit is coupled to the optical disc drive and the bus controller, and has an audio-visual output interface connected to an external output device, and is used to control the reading of the first digital audio-visual data via the optical disc drive, decoding and conversion to an external output device according to the user's choice. Acceptable audio-visual data output, or download the second digital audio-visual data from the computer via the bus controller to transcribe, store and play. The transcribed storage carrier is an internal flash memory or an internal smart media interface, and an external USB flash memory .

In a preferred embodiment of the present invention, the control central unit further includes: an encryption and decoding unit, an audio and video data playback engine, a first multiplexing circuit, an audio and video data decoding unit and a programmable control unit. Wherein, the encryption and decoding unit is used for decrypting the first digital audio-visual data. The audio-video data playing engine is used for controlling the playing of the second digital audio-video data. The first multiplexing circuit is coupled to the encryption decoding unit and the audio-visual data playing engine, and is used for outputting one of the decrypted first digital audio-visual data and the second digital audio-visual data. The audio-video data decoding unit is coupled to the first multiplexing circuit, and is used for decoding the audio-video data selected by the first multiplexing circuit into digital audio data and digital video data for output. The programmable control unit is coupled to the audio-visual data playing engine, and is used for providing user selection and controlling the playing of audio-visual data.

In one embodiment, the programmable control unit includes: a programmable controller, a keyboard, an infrared receiver and a liquid crystal display panel. Among them, the programmable controller is used to implement the user's selection and control. The keyboard is coupled to the programmable controller for providing user input options and control commands. The infrared receiver is coupled to the programmable controller to provide the user with remote input selection and control commands. The liquid crystal display panel is coupled to the programmable controller to display the status of selection and control.

In one embodiment, the encryption and decoding unit performs CSS/CPPM decryption on the first digital audio-visual data to play back the DVD-Video/DVD-Audio audio-visual data. The video and audio data decoding unit can support the decoding of formats such as MPEG4, MPEG2, MPEG1 (including MP3), WMA and JPEG. Among them, the digital audio data after decoding the audio-visual data is PCM audio, and the digital video data is ITU-656 video.

In one embodiment, its optical disc drive can support reading audio and video data of DVD, VCD, SVCD, CD, CDR and DVD-R. And the bus controller is, for example, a universal serial bus controller using the Philips ISP1362 control chip of On-The-Go technology, so that the video disc player bus can be used as both a host and a peripheral.

In one embodiment, the control central unit further includes an audio-visual data encoding unit for re-encoding the decoded first digital audio-visual data into a format selected by the user, so as to output a re-encoded third digital audio-visual data. Wherein, the audio-video data encoding unit can support encoding in MPEG4, MPEG2, MPEG1 (including MP3), WMA and JPEG formats, which is digitally re-recorded audio-visual data.

In an embodiment, the control central unit further includes: an audio-video input interface and an audio-video data encoding unit. Wherein, the audio-visual input interface is used for receiving an input audio-visual data from an external audio-visual device, and converting the input audio-visual data into a digital audio data and a digital video data. The audio-video data encoding unit is used to re-encode the above-mentioned digital audio data and digital video data into a format selected by the user, so as to output a fourth digital audio-video data. Wherein, the audio-video data encoding unit can support encoding in MPEG4, MPEG2, MPEG1 (including MP3), WMA, JPEG and other formats, which is an analog audio-video input duplication.

In one embodiment, the control central unit further includes: a built-in flash memory for storing the second, third or fourth digital audio-visual data.

In one embodiment, the control central unit further includes: a smart media interface for inserting a smart media interface card to store the second, third or fourth digital audio-visual data.

In one embodiment, the bus controller also has a second connection terminal.

Among them, the audio-visual input interface includes a video analog/digital converter and an audio analog/digital converter, and can provide an image input terminal, an image input S terminal, a left channel input terminal, a right channel input terminal and an S /PDIF input terminal. The audio-visual output interface includes a video digital/analog converter and an audio digital/analog converter, and can provide an image output terminal, an image output S terminal, a Y/CB/CR terminal, a left channel output terminal, and a right channel output terminal. A channel output terminal and a S/PDIF output terminal.

From the above description, it can be known that the application of a multifunctional video disc player that supports downloading and playing provided by the present invention can be connected with a computer to directly record and download files in formats such as MP3, WMA, JPEG and MPEG4, and can directly Play digital audio and video files in formats such as MP3, WMA, JPEG and MPEG4 downloaded from the computer. The audio-visual program played can also be transcribed into a file of a selected format, and stored in a smart media interface card, a portable storage device with a universal serial bus interface or a built-in flash memory.

In addition, the first connection terminal and the second connection terminal of the bus controller can be directly connected with a digital camera or a digital video camera and a printer to achieve dynamic display and recording or static printing functions.

In order to make the above and other purposes, features, and advantages of the present invention more comprehensible, the preferred embodiments, together with the accompanying drawings, are described in detail below:

Description of drawings

Fig. 1 has shown a kind of known recordable video disc player circuit block schematic diagram;

The figure shows a schematic diagram of a known playing method of a video disc player;

Fig. 3 has shown a kind of schematic diagram of playing mode of the multi-function video disc player that supports downloading and playing according to the preferred embodiment of the present invention; And

FIG. 4 shows a schematic circuit block diagram of a multifunctional DVD player supporting download and playback according to a preferred embodiment of the present invention.

Detailed ways

Please refer to FIG. 2 , which shows a schematic diagram of a known playing method of a video disc player. As previously mentioned, many digital audio-visual files in formats such as MP3, WMA, and MPEG4 provided on the Internet 250 must be connected to the Internet 250 to download by using the computer 240, and then burned to the CD 260 before they can be placed. In the DVD player 210, it is played through the TV 220 and the stereo 230. This is really wasteful and also time-consuming and troublesome for some MP3 and WMA music files that are only expected to be used for a short time.

Please refer to FIG. 3 , which shows a schematic diagram of a playback mode of a multi-function DVD player supporting download playback according to a preferred embodiment of the present invention. Shown in the figure, this multifunctional DVD player 310 that supports downloading and playing does not need to be burned to a CD, instead, when the computer 340 is connected to the Internet 350 to download, for example, digital video files in formats such as MP3, WMA and MPEG4, Use a universal serial bus connection line 360 to connect to the computer 340, so that the downloaded digital video files can be transcribed into the built-in cache memory (not shown) of the multi-function video player 310 that supports downloading and playback, or inserted into The smart media card (smart media card) of the multi-function DVD player 310 that supports downloading and playback, or a portable storage device with a USB interface, etc., and is played through the TV 320 and the audio system 330 .

Please refer to FIG. 4 , which shows a circuit block diagram of a multifunctional DVD player supporting download and playback according to a preferred embodiment of the present invention. As shown in the figure, the multifunctional video player 400 supporting download and playback includes: a disc drive 410 , a bus controller 420 and a control center unit 430 . Wherein, the optical disc drive 410 is used for reading the first digital audio-visual data placed in the optical disc of the optical disc drive 410 . The bus controller has a first connection terminal for connecting to a computer (not shown) and controlling communication with the computer. And the control central unit 430 is coupled to the optical disk drive 410 and the bus controller 420, and has an audio-visual output interface 450 connected to external output devices (not shown) such as TVs and stereos, for controlling according to the user's selection. Read the above-mentioned first digital audio-visual data through the optical disc drive 410, decode and convert it into an acceptable audio-visual data output of an external output device, or download the second digital audio-visual data from the computer through the bus controller 420 to transcribe, store and play.

In addition to the audio-visual output interface 450 having a video digital-to-analog converter 451 and an audio digital-to-analog converter 453, the control central unit 430 may also include: an encryption decoding unit 432, a first multiplexing circuit 435, an audio-visual data playback engine 437, and A video and audio data decoder 441, a flash memory 443 and a video and audio data decoding unit 440 of the first synchronous dynamic memory 445, a programmable control unit 460 with a programmable controller 465, a liquid crystal display panel 467, an infrared receiver 461 and a keyboard 463, There is an audio-visual data encoding unit 470 with an audio-visual data encoder 475 and a second synchronous dynamic memory 471, an audio-visual input interface 480 with a video analog-to-digital converter 481 and an audio-analog-to-digital converter 483, a built-in flash memory 485, and a multiplexer The second multiplexing circuit 490 of the devices 491 and 493 and the smart media interface 495. Wherein, different circuit combinations can be selected according to different functional requirements, and various functions will be explained below with reference to the circuit blocks in FIG. 4 .

When the multifunctional DVD player 400 supporting downloading and playing wants to play a program from a CD, the CD is first placed in the CD drive 410, and the operation reads the first digital audio-visual data in the CD, wherein the CD drive is, for example, Support DVD, VCD, SVCD, CD, CDR and DVD-R audio and video data reading. Then the encryption and decoding unit 432 can perform CSS decryption on the video part of the first digital audio-visual data of the DVD, and perform CPPM decryption on the audio part. When the first multiplexing circuit 435 is playing an optical disc program, it will select and output the decrypted first digital audio-visual data, and the audio-visual data decoder 441 cooperates with the flash memory 443 for storing programs and the first synchronous dynamic memory 445 as a buffer To operate, to decode the first digital audio-visual data into digital audio data of PCM audio and digital video data of ITU-656 video to output. The digital video data of the ITU-656 video and the digital audio data of the PCM audio are converted into analog signals by the video digital-to-analog converter 451 and the audio digital-to-analog converter 453 respectively, and then the video output terminal, video output S terminal or Y/CB/CR The digital audio data of PCM audio can also be directly output through the S/PDIF output terminal. Among them, the video and audio data decoder 441 can support decoding formats including digital video and audio coding formats such as MPEG4, MPEG2, MPEG1 (including MP3), WMA, and JPEG.

When downloading the second digital audio-visual data in formats such as MP3, WMA, and MPEG4, the computer can be connected via the first connection port (or the second connection port) of the bus controller 420, and the data can be stored in the built-in fast The flash memory 485 or a smart media interface card (not shown) inserted in the smart media interface 495 . The playback of the second digital video and audio data is controlled by the video and audio data playback engine 437, and its playback path is also selected by the first multiplexing circuit 435, which is the same as the above description.

Wherein, bus controller 420 is preferably the universal serial bus controller of the Philips ISP1362 control chip using On-The-Go technology, the characteristic of this universal serial bus controller is that the external device connected to it can be used as a host computer, It is also possible to use an external device connected to it as an accessory device. Therefore, when it is connected to a computer, the computer is the host. And when it is connected as digital camera, digital video camera and printer etc., then digital camera, digital video camera and printer etc. are all its accessory devices. At this time, the functions of dynamic playback and recording in the built-in flash memory 485 or a smart media interface card (not shown) inserted in the smart media interface 495 can be achieved, and external serial bus flash can be supported The function in the memory, and the function of the printer is realized by printing the static picture through the printer.

While playing the CD program, the audio-visual data encoder 475 can also be used to cooperate with the second synchronous dynamic memory 471 as a buffer memory to transcribe the program into the built-in flash memory 485 or inserted into the bus controller 420 A portable storage device (not shown) with a USB interface at the connection end, or a smart media interface card (not shown) inserted into the smart media interface 495 . The format of transcription is, for example, different formats such as MPEG4, MPEG2, MPEG1 (including MP3), WMA, and JPEG, which can be selected by the user. At this time, the audio-visual data encoding unit 470 selects the decoded first digital audio-visual data through the multiplexers 491 and 493, and re-encodes it into the format selected by the user, and outputs the third digital audio-visual data. Then select a portable storage device (not shown) that is stored in the built-in flash memory 485, or plugged into the connection end of the bus controller 420 with a USB interface (not shown), or plugged into the smart media interface 495. In a smart media interface card (not shown).

Among them, the compression ratio of MPEG4 is about 10 times that of MPEG2, and MP3 is an audio compression standard, its compression ratio is 1:10 to 1:20, and the bit rate is 112Kbps to 128Kbps. Different compression standards, the resolution of the recorded video will be different, the most advanced DVD recording standard, its image can reach 500 (MPEG2), the advanced quasi-DVD recording standard, its image can reach 320 (between MPEG2 and MPEG1), ordinary VCD-level video standards, its images can reach 250 (MPEG1). Therefore, the size of compressed and encoded files will vary with different standards. For example, a 5G-bit DVD disc (MPEG2 standard) is re-encoded and compressed by MPEG4, and maintains the same resolution and AC3 audio track. Its files can be Compressed to 650M bit capacity. Usually, the compression ratio of MPEG2 is 10 to 30 times, and the bit rate after encoding is 3Mbps to 5Mbps, while the compression ratio of MPEG4 is 200 to 1000 times, and the bit rate after encoding is 5Kbps to 2Mbps, so it can respond to different Adjust the bit rate according to display requirements. The lower the bit rate, the smaller the storage capacity, but the resolution will also be reduced. For example, if you want to play DVD movies on a portable player, since its LCD screen resolution is only 320×240, and its memory capacity is not large, you can choose MPEG4 video high-efficiency compression coding and MP3 audio high-efficiency compression coding, to transcribe a video to a low-capacity video that still plays with acceptable clarity.

The audio-visual data encoding unit 470 is composed of system peripheral circuits such as a video 32-bit RISC (Reduced instruction set computer) processor, an audio DSP processor, and a second synchronous dynamic memory 471. Its video part can support real-time MPEG4/MPEG2/MPEG1 standard video encoding:

-ISO/IEC 13818-2, MP@ML&SP@ML

-ISO/IEC 14496-2, MPEG4SOP@LEVEL3

-525/60(NTSC) to 720×480@30fps(720-D1,704-D1,640-VGA,544,480-2/3D1,352-1/2D135)×480 ×112(QCIF)

-625/50(PAL) up to 720×576@25fps(720-D1, 704-D1, 640-VGA, 544, 480-2/3D1, 352-1/2CIF3 or 25fps)×27 or 176×144(QCIF)

-FILM: (720-D1, 704-D1, 640-VGA, 544, 480-2/3D1, 352-1/2D1)X480 or 352×240(CIF) or 176×144(QCIF)

Its definition can reach D1, 2/3D1, 1/2D1, CIF, QCIF; support I, P&B or IPBB frame compression and static JPEG format encoding; support fixed and one-time variable bit rate encoding: IPB image, CBR or VBR up to 15Mbps, I image only up to 30Mbps; flexible GOP architecture: variable M, N-IBBP, IBP, IP, I frame; support variable image size: programmable up to 2048×2048, the largest motion prediction Search engine scope: using halfpel precision

-P Pictures: X=[-64, +64], Y=[-32, +32]

-B Pictures: X=[-32,+32], Y=[-32,+32]

Motion prediction can be Frame/Field/16×8; support bit rate control: VBR/CBR; support color format YUV4:2:2 to 4:2:0 conversion; support adaptive field/picture Frame (frame) mode, field/picture frame (frame) DCT; support motion detection and 3:2 pull-down TELECINE conversion in movie mode, and its video encoding data supports ITU-R656 or ITU-R601 format. And its audio part supports ISO/IEC13818-3MPEG audio (including layer 1, 2 and 3-MP3), WMA audio coding; supports 48/44.1/32/24/22.05/16KHz audio sampling; supports two-channel audio to MPEG audio format of all layers or Dolby AC3 audio coding; the resolution of audio data can reach 24 bits/sample, and the coding bit rate through the audio-visual data coding unit 470 can reach 512Kbps to 7Mbps.

When transcribing a program played by an external audio-visual device, it is first necessary to input audio-visual data from the external audio-visual device through the video input terminal or video input S terminal and the left channel input terminal and right channel input terminal or S/PDIF input terminal Input to the audio-visual input interface 480, then the video analog-digital converter 481 and the audio analog-digital converter 483 of the audio-visual input interface 480 will convert the input audio-visual data into digital video data of ITU656 video and digital audio data of PCM audio, and pass through multiple The selection of the processors 491 and 493, and the encoding of the audio-visual data encoding unit 470, and re-encode it as the fourth digital audio-visual data output in the format selected by the user, and then select to store in the built-in flash memory 485, or insert A portable storage device (not shown) with a USB interface placed at the connection end of the bus controller 420 , or a smart media interface card (not shown) inserted in the smart media interface 495 .

The above actions are controlled by the programmable control unit 460 in FIG. 4 , which includes a programmable controller 465 , an infrared receiver 461 , a keyboard 463 and a liquid crystal display panel 467 . Wherein, the programmable controller 465 is used to perform user's selection and control. The keyboard 463 and the infrared receiver 461 are coupled to the programmable controller 465 for providing user input or remote control input selection and control commands. The liquid crystal display panel 467 is used to display the status of selection and control.

In summary, the present invention has at least the following advantages:

1. It can be connected with the computer to directly record and download files in formats such as MP3, WMA, JPEG and MPEG4, and can directly play digital video files downloaded from the computer without burning a CD.

2. Able to transcribe audio-visual programs played via CD-ROM drive or external audio-visual devices into the selected format, and choose to store them in a smart media interface card, a portable storage device with a universal serial bus interface or a built-in flash memory middle.

3. The first connection terminal and the second connection terminal of the bus controller can be used to directly connect with a digital camera or a digital video camera and a printer to achieve dynamic display and recording or static printing functions.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims (24)

1. A multi-functional DVD player that supports downloading and playing, comprising: an optical disc drive, used for reading the first digital audio-visual data placed in the optical disc of the optical disc drive; a bus controller, having a first connection terminal, used for connecting to a computer and controlling communication with the computer; and A control central unit, coupled to the optical disc drive and the bus controller, has an audio-visual output interface connected to an external output device, and is used to control the reading of the first digital audio-visual data through the optical disc drive according to a user's choice , decode and convert to the output of audio-visual data acceptable to the external output device, or download the second digital audio-visual data from the computer via the bus controller to transcribe, store and play. 2. The multifunctional DVD player supporting download and playback as claimed in claim 1, wherein the control center unit further comprises: An encryption and decoding unit, used to decrypt the first digital audio-visual data; An audio-visual data playback engine, used to control the playback of the second digital audio-visual data; a first multiplexing circuit, coupled to the encryption and decoding unit and the audio-visual data playback engine, for outputting one of the decrypted first digital audio-visual data and the second digital audio-visual data; An audio-visual data decoding unit, coupled to the first multiplexing circuit, is used to decode the audio-visual data selected by the first multiplexing circuit into a digital audio data and a digital video data output; and A programmable control unit is coupled to the audio-visual data playing engine for the user to select and control the playback of audio-visual data. 3. The multifunctional DVD player supporting downloading and playing as claimed in claim 2, wherein the programmable control unit comprises: a programmable controller for implementing the user's selection and control; a keyboard, coupled to the programmable controller, for providing the user with input options and control commands; an infrared receiver, coupled to the programmable controller, for providing the user with remote input selection and control commands; and A liquid crystal display panel, coupled with the programmable controller, is used for displaying the status of selection and control. 4. The multifunctional DVD player supporting downloading and playing as claimed in claim 2, wherein the video and audio data decoding unit can support decoding of MPEG4, MPEG2, MPEG1, MP3, WMA and JPEG formats. 5. The multifunctional DVD player supporting download and playback as claimed in claim 2, wherein the digital audio data is PCM audio and supports S/PDIF digital audio input. 6. The multifunctional DVD player supporting download and playback as claimed in claim 2, wherein the digital video data is ITU-656 video. 7. The multifunctional DVD player supporting download and playback as claimed in claim 1, wherein the optical disc drive can support reading audio and video data of DVD, VCD, SVCD, CD, CDR and DVD-R. 8. The multifunctional DVD player supporting download and playback as claimed in claim 1, wherein the bus controller is a Universal Serial Bus controller. 9. The multifunctional DVD player supporting download and playback as claimed in claim 8, wherein the USB controller is a Philips ISP1362 control chip using On-The-Go technology. 10. The multifunctional DVD player supporting download and playback as claimed in claim 1, wherein the control center unit further comprises: An audio-visual data encoding unit is used to re-encode the decoded first digital audio-visual data into a format selected by the user to output a third digital audio-visual data. 11. The multifunctional DVD player supporting download and playback as claimed in claim 10, wherein the audio-video data encoding unit can support encoding in MPEG4, MPEG2, MPEG1, MP3, WMA and JPEG formats. 12. The multifunctional DVD player supporting download and playback as claimed in claim 10, wherein the control center unit further comprises: A built-in flash memory is used for storing the third digital audio-visual data. 13. The multifunctional DVD player supporting download and playback as claimed in claim 10, wherein the control center unit further comprises: An intelligent media interface is used for inserting an intelligent media interface card to store the third digital audio-visual data. 14. The multifunctional DVD player supporting download and playback as claimed in claim 1, wherein the control center unit further comprises: an audio-visual input interface, used to receive an input audio-visual data from an external audio-visual device, and convert the input audio-visual data into a digital audio data and a digital video data; and An audio-visual data encoding unit is used to re-encode the digital audio data and the digital video data into a format selected by the user to output a fourth digital audio-visual data. 15. The multifunctional DVD player supporting download and playback as claimed in claim 14, wherein the audio-video data encoding unit can support encoding in MPEG4, MPEG2, MPEG1, MP3, WMA and JPEG formats. 16. The multifunctional DVD player supporting download and playback as claimed in claim 14, wherein the control center unit further comprises: A built-in flash memory is used for storing the fourth digital audio-visual data. 17. The multifunctional DVD player supporting download and playback as claimed in claim 14, wherein the control center unit further comprises: An intelligent media interface is used for inserting an intelligent media interface card to store the fourth digital audio-visual data. 18. The multifunctional DVD player supporting download and playback as claimed in claim 14, wherein the audio-video input interface includes a video analog/digital converter and an audio analog/digital converter. 19. The multifunctional video disc player supporting download and playback as claimed in claim 18, wherein the audio-video input interface has an image input terminal, an image input S terminal, a left channel input terminal, and a right channel input terminal. terminal and a S/PDIF input terminal. 20. The multifunctional video disc player supporting download and playback as claimed in claim 1, wherein the video output interface includes a video digital/analog converter and an audio digital/analog converter. 21. The multifunctional DVD player supporting download and playback as claimed in claim 20, wherein the audio-visual output interface has an image output terminal, an image output S terminal, a Y/CB/CR terminal, and a left channel output terminal, a right channel output terminal and a S/PDIF output terminal. 22. The multifunctional DVD player supporting download and playback as claimed in claim 1, wherein the bus controller also has a second connection terminal. 23. The multifunctional DVD player supporting download and playback as claimed in claim 1, wherein the control center unit further comprises: A built-in flash memory is used for storing the second digital audio-visual data. 24. The multifunctional DVD player supporting download and playback as claimed in claim 1, wherein the control center unit further comprises: A smart media interface is used for inserting a smart media interface card to store the second digital audio-visual data.

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