CN2519384Y

CN2519384Y - Flash storage disc having audio frequency document display function

Info

Publication number: CN2519384Y
Application number: CN 02202548
Authority: CN
Inventors: 王伟良; 张琦
Original assignee: Ramaxel Technology Shenzhen Co Ltd
Current assignee: Ramaxel Technology Shenzhen Co Ltd
Priority date: 2002-01-25
Filing date: 2002-01-25
Publication date: 2002-10-30
Anticipated expiration: 2012-01-25

Abstract

A flash memory disk with the function of broadcasting audio files comprises at least a flash memory body with a flash memory, a USB interface and a corresponding controller which is connected with a decoder connected with a digital to analog converter, a power amplifier and an output of audio. The utility model which belongs to a data storing device in the computer and consumption electric products is an electrical external storing device used in moving data storage with large capacity, high reliability and convenience. As an outer storing device, the utility model has the advantages of small volume, good storing reliability, vibration resistance and being moisture proof is convenient to carry and can cope and delete various types of files and ensure that the data cannot be lost, and at the same time, the utility model can directly broadcast mp3 or other audio files in the flash memory, realizing one device serving several purposes.

Description

The flash disk that has the audio file playing function

Affiliated technical field

It is the flash disk of storage medium based on USB interface, with Flash that the utility model relates to a kind of, especially a kind ofly not only can plug and play carry out data storage, realize mobile storage, the flash disk that can also play audio file wherein.

Background technology

Since PC was introduced to the market, the external memory storage that it adopts was a disk always.Floppy disk from initial 512K, 1.2M, goes so far as the 1.44M that is still using now as a kind of medium of being convenient to carry out exchanges data between different computers.Along with development of computer, a large amount of patterns, audio frequency, video data need storage and exchange on PC.By contrast, the flexible plastic disc of 1.44M can't be competent at present needs already on memory capacity.Secondly, floppy disk is as a kind of storer of magnetic medium, and the floppy disk that read-write need have mechanical action carries out, and its speed is very slow, and reliability is also relatively poor relatively.

Along with the deep development of computer technology, the general-purpose serial bus USB technology has obtained using relatively widely.USB is the abbreviation of English Universal Serial Bus, and Chinese implication is " USB (universal serial bus) ".It is by seven tame world-renowned computing machines and communication company's initiation and formulations such as Intel, Compaq, Digital, IBM, Microsoft, NEC, Northern Telecom.USB is the new interface technology that is applied in the PC field, and it can be connected to main frame easily with the peripherals of PC.It has conveniently, at a high speed, many characteristics flexibly.Therefore, many data communication productss have adopted USB interface, and a kind of external storage---flash disk is arranged, and utilize USB interface to connect computer exactly.

As an external storage, the selection of storage medium is very crucial problem.Generally can be classified as two classes to these storage mediums: the magnetic medium of rotation and flash chip.And by contrast, the former advantage is to provide high capacity more, quicker, more cheap storer.Because moving component is arranged, so they have more electricity needs, and their volume is also bigger; And the latter's advantage to be them be applicable to wide region temperature, damp condition, and owing to do not have moving component, very quiet during access, also relatively power saving simultaneously.Adopt the data storage function of the flash disk of flash chip to substitute, and improved the function of floppy disk greatly.And existing flash disk electrical structure complexity, configuration has unreasonable part more.

In addition, we usually need the adjustment of music in work, and people need use other equipment could satisfy the requirement of the sense of hearing.Though present digital audio is play product some players such as MP3 are arranged, it as independently consumption electronic product use, and is not had integrated product, and often it can only play a kind of audio file of MP3 format.They obtain mp3 file from PC and need adopt special software to carry out, and are very inconvenient.There are these products only to have the function of player again, do not have the ability of while storing data files and mp3 file.

Summary of the invention

The purpose of this utility model is to provide a kind of flash disk that has the audio file playing function, and it not only has the function of flash disk, can also finish download, storage and the broadcast of audio file.

Another purpose of the present utility model is to provide a kind of flash disk that has the audio file playing function, and it can be carried easily, and deposits the data file of various forms simultaneously in inside, can warm swap, and plug and play.

For this reason, the utility model provides following technical scheme to realize above-mentioned purpose:

A kind of flash disk that has the audio file playing function which comprises at least the flash disk body that has flash memory and USB interface and corresponding controllers, and wherein said flash disk controller is connected to demoder, and demoder is connected to DAC, power amplifier and audio frequency output.

Described flash memory branch has the more than one zone of depositing different files.

Described controller is provided with the flash data read-write control switch.For ease of controlling, read-write control switch is a mechanical type, is arranged on the flash disk body.

The working power of described flash disk is for to obtain power supply by USB interface and power supply processing module from main frame.In addition, the working power of flash disk is a battery, therefore is provided with cell containing cavity on the flash disk body.

Also have, described flash disk body is provided with earphone jack, is user-friendly to.

The utility model belongs to the data storage device in computer and the consumer electronics product, and it is a kind of high capacity, high reliability, convenient electronic type external memory that uses that is used for the mobile data storage.It is as a peripheral storage device, volume is little, be easy to carry, can copy, delete various types of files, memory reliability is good, antidetonation, protection against the tide, the assurance data can not lost, simultaneously, the utility model can be play-overed mp3 or other audio file that leaves in the flash memory, realizes the effect of multi-functional machine.

Description of drawings

Fig. 1 constitutes block diagram for the utility model circuit;

Fig. 2 is the utility model CPU and USB circuit theory diagrams;

Fig. 3 is the connection of the utility model Flash chip

Fig. 4 is the utility model audio decoder circuit theory diagrams;

Fig. 5 is the annexation circuit theory diagrams of the utility model DAC;

Fig. 6 is the utility model external cell power supply modular circuit schematic diagram.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

The utility model is as a kind of flash disk that has the audio file playing function, it adopts USB as interface, adopt the medium of flash memory as data storage, connect usb bus and Flash chip by controller independent or that separate, carry out conversion leaving flash chip sound intermediate frequency file in, final output audio by audio decoder independent or that separate.

Referring to Fig. 1-6, be the specific implementation of the utility model hardware circuit.It mainly comprises flash memory (Flash) chip, and power module comprises microprocessor chip, the demoder DECODER of usb interface controller, DAC, parts such as power amplifier (these functions may be in respectively in the independent chip, also may be integrated in several chips).Wherein, as shown in Figure 2, USB interface USB-PORT is used to connect the USB port of main frame, becomes data channel; The microprocessor chip that comprises usb interface controller CPU U5 is responsible for finishing the transmission of all parts action directives of the utility model; As Fig. 3 flash memory U8, U9 is the above flash memory of a slice, is used to store all file datas, comprises audio file; Fig. 4,5 has provided demoder U3, and DAC U2 and power amplifier, earphone J2 etc. partly is responsible for finishing decoding processing, the broadcast of audio file, realizes the function of player; The receiver J-Horner that is provided with on the utility model body, the installation earphone is directly play and is listened to, and also can finish to play by other equipment and listen to.

Concrete power unit, referring to Fig. 6, the utility model can adopt dual mode to power.When the utility model was inserted into the USB port of computing machine, it can be powered by the power supply of USB, for example U4; Other the time, the utility model can be powered by battery BAT, the DC/DC U1 that body carries, can realize that like this utility model player is independent of the purpose that main frame uses, really become mobile storage and move the convenient and practical consumer-elcetronics devices of playing.

It should be noted last that, above embodiment is only unrestricted in order to explanation the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the utility model, and not breaking away from spirit and scope of the present utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1, a kind of flash disk that has the audio file playing function, which comprises at least the flash disk body that has flash memory and USB interface and corresponding controllers, it is characterized in that: described flash disk controller is connected to demoder, and demoder is connected to digital-to-analog conversion (DAC), power amplifier and audio frequency output.

2, the flash disk that has the audio file playing function according to claim 1 is characterized in that: described flash memory branch has the more than one zone of depositing different files.

3, the flash disk that has the audio file playing function according to claim 1, it is characterized in that: described controller is provided with the flash data read-write control switch.

4, the flash disk that has the audio file playing function according to claim 1, it is characterized in that: described read-write control switch is a mechanical type, is arranged on the flash disk body.

5, the flash disk that has the audio file playing function according to claim 1, it is characterized in that: the working power of described flash disk is for to obtain power supply by USB interface and power supply processing module from main frame.

6, the flash disk that has the audio file playing function according to claim 1 is characterized in that: the working power of described flash disk is a battery.

7, the flash disk that has the audio file playing function according to claim 1 is characterized in that: described flash disk body is provided with cell containing cavity.

8, the flash disk that has the audio file playing function according to claim 1 is characterized in that: described flash disk body is provided with earphone jack.