CN2549526Y

CN2549526Y - USB storage

Info

Publication number: CN2549526Y
Application number: CN 02238479
Authority: CN
Inventors: 李栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-14
Filing date: 2002-06-14
Publication date: 2003-05-07
Anticipated expiration: 2012-06-14

Abstract

The utility model relates to an external memory, particularly a memory using the USB (a serial data wire) interface. The utility model is characterized in that a USB interface is arranged and is connected with a USB control integrated circuit IC1 which is connected with a dynamic memory unit SDRAM. The whole device is provided with a direct current power supply which is connected with the dynamic memory unit SDRAM. By using the mature dynamic memory unit SDRAM, the utility model can realize the effect of reliable work, and simultaneously, due to lower cost which is only 1 / 3 cost of a flash memory, the cost can be greatly reduced; moreover, the consumption of the electric energy of the integrated circuits is minimum; two 1.5V batteries are allocated, but the volume increase is limited; the service life still can be calculated by serving year as one unit.

Description

USB storage

Technical field

The utility model relates to a kind of external memory storage, particularly a kind of storer of employing USB (general serial data line) interface.

Background technology

Existing computer software is complicated and huge day by day, the documents and information of storage is increasing, often need some data of copy between each computer, former general 3.5 cun the floppy disk that all uses, but the floppy disk memory space is too little, it is meaningful that dish can only be stored 1.44MB, often is not enough to store a relevant file, just needs a plurality of dishes for this reason, to its numbering, order is stored, and also needs during use to use in order, and is pretty troublesome, and the reliability of floppy disk is too low, often break down during use, a dish breaks down, and a cover dish all can't use; Along with the development of technology, a kind of flash memory (FLASHMEMORY) has appearred again, and its memory space is big, and having does not need to continue power supply after the data and can preserve all data, but this external memory costs an arm and a leg, and also there are some difficulties in universal use.

Content of the present invention

In view of this, how to solve reliability and memory space, can be accepted on use cost again simultaneously, promptly good and cheap, the utility model grinds wound motivation place just.

The utility model designer relies on the practical experience of being engaged in fields such as various information product research production and processing for many years, on the basis of feasibility study repeatedly, does a brand-new design and constitutes, and gets generation of the present utility model eventually.

At the deficiencies in the prior art, the purpose of this utility model provides a kind of USB storage, and it has reliable operation, and memory space is big, use easy to carry, low price.

The purpose of this utility model can be by following realization, the utility model is provided with a USB interface, connects a USB control integrated circuit IC1, and USB control integrated circuit IC1 connects a dynamic storage group SDRAM, whole device is provided with a direct current power supply, and direct supply is connected with dynamic storage group SDRAM.

The utility model is by using ripe dynamic storage group SDRAM, can realize the effect of reliable operation, simultaneously because cost is lower, has only 1/3 of flash memory, can reduce cost significantly, and the consumption of these integrated circuit electric energy is minimum, joins the battery of 2 joint 1.5V, volume increases limited, and still can be that unit calculates serviceable life with the year.

Exemplify preferred embodiment below in conjunction with accompanying drawing and further illustrate the utility model.

Description of drawings

Fig. 1 is the utility model structural representation.

Specific implementation of the present utility model

The utility model is provided with a usb 1, USB interface has been a kind of standard interface that computer must be joined at present, be widely used in each host computer, its small and exquisite practicality, the reliability height, the utility model adopts USB interface, meet the fashion trend of computer interface now, usb 1 connects a USB control integrated circuit IC1, integrated circuit (IC) 1 can be selected OTI6808 for use, model such as 3S or ICSI, it has the effect of taking over from the past and setting a new course for the future, the operate as normal of preceding energy control interface, after can management data make interface data and with follow-up storer or data processing device transmission exchange, USB control integrated circuit IC1 connects a dynamic storage group SDRAM, the dynamic storage group can be selected 16MB for use, 32MB, 64MB, 128MB, 256MB, memory space such as 512MB and 1024MB, the model of its storer can be selected Samsung for use, modern common SDRAM, whole device is provided with a direct current power supply E, and direct supply is connected with dynamic storage group SDRAM, can provide dynamic memory refresh required electric energy.

In sum, the utility model can utilize simple structural design, use ripe low-cost device to realize external memory, can take into account reliability and cost, simultaneously, available model of dynamic storage SDRAM and manufacturer are numerous, the choice is very big, low price, and flash memory has only a tame Samsung to produce, be left with no alternative, the service that obtains and the ratio of performance to price are all undesirable.Obviously the utility model is the new design of a kind of novelty, progress and dark tool practicality.The above is specific embodiment of the utility model and the know-why used, if the equivalence of doing according to conception of the present utility model changes, when the function that it produced does not exceed spiritual that instructions and accompanying drawing contain yet, all should be in scope of the present utility model, explanation hereby.

Claims

1, a kind of USB storage, it is characterized in that being provided with a USB interface, connect a USB control integrated circuit IC1, USB control integrated circuit IC1 connects a dynamic storage group SDRAM, whole device is provided with a direct current power supply, and direct supply is connected with dynamic storage group SDRAM.