CN2565082Y

CN2565082Y - Portable digital picture and sound player

Info

Publication number: CN2565082Y
Application number: CN 02239610
Authority: CN
Inventors: 赖俊鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-05
Filing date: 2002-07-05
Publication date: 2003-08-06
Anticipated expiration: 2012-07-05

Abstract

The utility model relates to a portable digital picture and sound player. The top surface of a host main body is provided with a display screen, both sides of the host main body is respectively provided with an audio and video signal input terminal and an output to connecting with an external connecting audio-visual sounder, the interior of the host main body is provided with a decompression module set and a 256K memory module set, wherein, the decompression module set comprises an audio decoder, a video decoder and an analog-digital converter. The utility model has the advantage of convenient carrying. The utility model has the function of MP3 music, besides, the utility model can be combined with a TV and a sounder into a multimedia video and audio player rapidly and smartly, or be downloaded with video and audio data by a computer.

Description

Portable Digital A player

Technical field

The utility model relates to a kind of digital playing device, particularly relates to a kind of Portable Digital A player.

Background technology

Since invention MP3 music compression method in 1987, world-wide web in the ascendant from literalization towards multimedia direction fast development, the transmission of sound also becomes the present stage network naturally and shares main flow with content.This opportunity is just in time caught up with in the appearance of MP3 player, the people that make the CD that gets used to listening to the music gradually then use MP3 because MP3 can bring the song storehouse that they wait for a large amount of songs of Gong program request for a long time, just as last KTV just streches the hand and brings it back.As shown in Figure 1, existing MP3 player comprise with MP3 compressed format be stored in decompressor 2 that MASK ROM memory body 1 decompressed, with the decompression digital signal convert to simulating signal converter 3, make the amplifier 4 of simulating signal gain and with the earphone base 5 of the external output of aforementioned amplifying signal.Yet, because the restriction of all factors such as memory body 1 deficiency makes this player only have the function that earphone is listened to the music.Scrutinize the evolution process of traditional media transmission and can find that world-wide web rises at the beginning, literal is that main information is transmitted media; After the frequency range problem solves, sound, animation and image will be come on stage successively, become the main media that Web content and information are transmitted.Therefore, MP3 being further developed, the phase can be applied in a flexible way with traditional audiovisual television acoustics, is problem to be studied in fact.

Summary of the invention

In order to overcome the above-mentioned shortcoming that prior art exists, the utility model provides a kind of Portable Digital A player, makes it can not only possess the MP3 music function, but and fast and flexible ground and television acoustics be combined to form the multimedia video player.

The technical scheme that its technical matters that solves the utility model adopts is:

The utility model is provided with one group of output terminal that can supply the input end of various audio frequency, vision signal input and can link external audiovisual sound equipment respectively in the both sides of main frame body; The 256K memory module that the inside of main frame body is provided with a decompression module and is made of FIFO is to accumulate audio frequency and the vision signal that is transmitted by the outside in regular turn; The decompression module comprises an audio decoder, a Video Decoder and an analog to digital converter, wherein audio decoder makes the memory module decode, gain according to the MPEG audio-frequency unit and by Doby sound system output, and Video Decoder is then decoded according to the MPEG video section for the memory module and looked will produce under the cooperation of letter interface conversion audio-visual at analog to digital converter and is sent to television acoustics combination broadcast by AV terminal.

Based on above structure, the utility model is easy to carry, not only can possess the MP3 music function, but and fast and flexible ground and television acoustics be combined into the multimedia video player or download audiovisual materials by computer.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the block scheme of existing MP3 player.

Fig. 2 is a combination stereogram of the present utility model.

Fig. 3 is the block scheme of the inner module of the utility model.

Fig. 4 utilizes the utility model to form the synoptic diagram of multimedia video Play System.

Fig. 5 is the enforcement circuit diagram of the utility model MICRONAS.

Fig. 6 is the enforcement circuit diagram of the utility model POWER and FLASH.

Fig. 7 is the enforcement circuit diagram of the utility model playback.

Fig. 8 is the enforcement circuit diagram of the utility model microprocessor.

Embodiment

As Fig. 2, shown in Figure 3, the end face of the main frame body 10 of the utility model Portable Digital A player is provided with a display screen 11, its left and right sides is respectively equipped with input end 12 that can supply various audio frequency and vision signal input and one group of output terminal 13 that can supply external audiovisual sound equipment to link, and its front and back side is respectively equipped with the slot 15 of one group of audio-visual regulation and control knob 14 and extendible body.

The 256K memory module 30 that main frame body 10 inside are provided with a decompression module 20 and are made of FIFO is so as to accumulating the audio frequency and the vision signal of being passed on by the outside in regular turn.Decompression module 20 comprises an audio decoder 21, a Video Decoder 22 and an analog to digital converter 23; Audio decoder 21 is decoded, is gained according to the MPEG audio-frequency unit for memory module 30 and exports by a Doby sound system 24; 22 of Video Decoders are decoded according to the MPEG video section for memory module 30 and are looked at analog to digital converter 23 under the cooperation of letter interface conversion, audio-visually are sent to television acoustics combination 50 by AV terminal 25 and broadcast what produce.

As shown in Figure 4, when the utility model uses, need to utilize an AV terminal 25 and a USB wiring 26 to be connected to host computer 40 and television acoustics combination 50 respectively the input end 12 and the output terminal 13 of main frame body 10 left and right sides.Then, can download hundreds of audiovisual materials,, all can pass to main frame body 10 fast down no matter be mpeg 3 form or MPEG4 form through host computer 40 to thousands of Mbytes; And the just broadcast of music shelves more can not resolved and be deposited image, this be the MP3 player can't be obtained.And utilize its 256B super large to remember the division of labor of audio decoder 21, Video Decoder 22 and analog to digital converter 23 in module, can rapidly music and audiovisual materials be sent to earphone (loudspeaker) or television acoustics combination 50 broadcasts; Simultaneously, multiple audio-visual standings such as MP3 player, cd-rom player even DVD player can be combined, with the purpose that reaches easy download, easily plays.The utility model is easy to carry, also can put into the data shuffle without computer, also can be by expanding the memory slots 15 external 64MB memory bodys of matching voluntarily, to increase the broadcast capacity.

Consult shown in Figure 5ly, be that the utility model MICRONAS implements circuit diagram, wherein the 24th of U1 the, 25,26 pin are connected with the 24th, 25,26 pin of U2 respectively.

Consult shown in Figure 6ly, be the enforcement circuit diagram of the utility model POWER and FLASH, wherein the 4th pin of U3 is connected with power switch SW1 through inductance L 8, triode Q1; The 29th, 30,31,32 pin and the 41st, 42,43,44 pin of U4 all meet CDD; Its 12nd pin meets 3V3D.

Consult shown in Figure 7ly, be the enforcement circuit diagram of the utility model playback, wherein the 9th of U5 the, 10,11,12 pin are connected with the 2nd, 3,1,14 pin of U7 respectively; The 6th pin of U5 is connected with input 6 ends of resistance R 50 and transport and placing device U6B through the capacitor C 60 of series connection; The 9th pin of U5 is connected with input 2 ends of resistance R 43 and transport and placing device U6A through the capacitor C 59 of series connection.

Consult shown in Figure 8, be the enforcement circuit diagram of the utility model microprocessor, wherein the 122nd of microprocessor chip U8 the, 1,2,6,9,18,21,24,30,33,37,38,39,46,49 pin are connected with the 11st, 10,9,8,7,6,5,4,29,28,24,27,3,30,31,2 pin of U9 respectively; The 52nd, 55,58,61,65,66,70,73 pin of U8 are connected with the 13rd, 14,15,18,19,20,21,22 pin of U9 respectively.

In sum as can be known, the utility model is easy to carry, not only possess the MP3 music function, but and fast and flexible ground and television acoustics be combined into the multimedia video player.

Claims

1, a kind of Portable Digital A player is characterized in that its main frame body end face is provided with display screen, and the left and right sides is respectively equipped with the output terminal of the external audiovisual sound equipment of audio frequency and video signal input terminal and binding; The 256K memory module that is provided with the decompression module in the main frame body and constitutes by FIFO, the decompression module comprises audio decoder, Video Decoder and analog to digital converter; Audio decoder is decoded, is gained according to the MPEG audio-frequency unit for the memory module and by Doby sound system output, and Video Decoder is then decoded according to the MPEG video section for the memory module and looked will produce under the cooperation of letter interface conversion audio-visual at analog to digital converter and is delivered to television acoustics by AV terminal and makes up.