CN2510905Y

CN2510905Y - Movable storage device

Info

Publication number: CN2510905Y
Application number: CN 01264953
Authority: CN
Inventors: 许宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-14
Filing date: 2001-10-14
Publication date: 2002-09-11
Anticipated expiration: 2011-10-14

Abstract

A storage equipment, which can be moved and operated conveniently, includes a storage part, a CPU, a USB interface circuit, a crystal oscillator circuit and a power circuit. The USB interface is standard, so as to be connected with PC. The storage of the hard disk can be chosen from several 100M to 48 GB. The utility model overcomes the problems of other data mobile equipment, such as the speed, price, safety, ease of use and so on. The large volume of data can be interacted, and the convenient mobility is guaranteed.

Description

Movable memory equipment

The utility model relates to computer technology, is specifically related to the memory device of PC.

Along with the raising of PC technology, large software, database, picture library emerge in multitude have proposed the requirement of capacity to the memory device of computer, and application program is 300M at least, greatly to 1～2G.As everyone knows, general data storage or transmission, low capacity by floppy disk, jumboly will use equipment such as CD, MO, ZIP.The minimum capacity of floppy disk and flimsy characteristics are the incompatibility development need.Become the standard configuration of computing machine from CD-ROM drive after; CD is popularized rapidly; but CD is as data storage; there is cost too high (needing the CD writer extras) again in mobile device; imprinting slowly (writes 640M and needs about 40 minutes); rewrite trouble and (need erasable optical disk; need reformatting to rewrite again at every turn; want about 70 minutes); and MO; the use of ZIP is because the popularity rate of driver is extremely low; only be used in some professional domains; and MO; the disc life-span of ZIP is low and very easily impaired; a dust just may cause the breaking-up of disc; MO; though the data storage of ZIP is faster than CD, also be very slow (write 640M and need about 30 minutes).In sum, existing movable storage device has shortcomings such as memory capacity is extremely limited, storage speed slow, security is extremely low, the loss of data possibility is bigger.

And the memory capacity of 640M disc do not satisfied present user data requirement far away, and data rise to present tens, up to a hundred G rapidly from original hundreds of M, several G.Therefore as basic the memory device----hard disk of computer, could satisfy present storage demand.Simultaneously along with computer technologyization, informationalized development, not only on amount, memory device is claimed, simultaneously the sharing of data storage, move and also propose corresponding requirement, though common hard disk can't be realized the function that data move having absolute predominance aspect the speed of storing, security, the ease for use.As the computer user through regular meeting because the backup of data, share, move and produce a lot of worriedly, for example mobile office, data backup, go on business office, image store or the like need mass data storage and mobile situation.Therefore notebook computer arises at the historic moment, but the high price of notebook computer and heaviness allow most users feel frustrated again.

In order to solve the memory device ease for use with the contradiction on the capacity, the purpose of this utility model provides a kind of portable, the hard disk that can realize the data locomotive function.

For achieving the above object, the utility model movable storage device comprises:

Usb circuit links to each other with CPU, and links to each other with PC by the USB cable, is used to guarantee that the electric parameter of interface meets the USB standard criterion;

The memory device part links to each other with CPU;

The crystal oscillating circuit links to each other with CPU, is used to guarantee that data transmit with given pace;

CPU links to each other with described usb circuit, memory device part, crystal oscillating circuit;

The USB cable is used for described usb circuit and is connected with PC.

Described memory device part can be 2.5 " hard disk, 3.5 " hard disk also can be a CD-ROM drive.

The utility model equipment adopts USB (Universal Serial Bus USB (universal serial bus)) standard interface to connect with computer, adopts 2.5 again simultaneously " hard disk is as memory device.Therefore it combines the advantage on mobility and the hard-disk capacity.For the computer user has proposed brand-new memory device solution.As the memory device of PC, characteristic such as have versatility, plug and play, be easy to carry.Specifically, can connect with various computers easily, realize the function of common hard disk simultaneously as the personal computer enclosure product.

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

Accompanying drawing is the structural principle block diagram of the utility model movable memory equipment.

Referring to accompanying drawing, the movable storage device of present embodiment comprises following hardware: CPU1, interface circuit 2, memory device part 3, crystal oscillating circuit 4, power circuit 5, indicating circuit 6, USB cable 7.Its software section is based on " USB1.1 standard agreement " and " AT Attachment with Packet InterfaceExtension ", hereinafter to be referred as ATA/ATAPI-5.

CPU1 adopts the SL11RIDE of U.S. SCANLOGIC company, its inner integration USB slave controller and USB-ATA/ATAPI-5 protocol conversion software.

Interface circuit 2 links to each other with CPU1, guarantees that the electric parameter of interface meets the USB standard criterion.

Memory device part 3 adopts 2.5 " hard disk, link to each other with CPU.

Crystal oscillating circuit 4 also links to each other with CPU, and it adopts the multiple harmonic sorting circuit of 48MHZ, and the assurance data are transmitted with 12MB/S.This data transmission rate is considerably beyond existing memory device.

Power circuit 5 is to realize the conversion of 5V to 3.3V in the present embodiment.According to the usb protocol standard, each USB port can be provided to the power supply of 5V/1A.Present embodiment adopt 2.5 " power requirement of hard disk is 5V/680MA; the CPU that selects for use of present embodiment is the VLSI (very large scale integrated circuit) that adopts CMOS in addition; therefore can realize Low-voltage Low-power on power consumption, promptly operating voltage is selected in 3.3V, and current drain is 30MA.Power unit 5 adopts the DC/DC conversion chip of RICOH company, has guaranteed conversion efficiency.If select for use other to support the CPU of 5V operating voltage, then can not need this circuit.

Indicating circuit 6 allows the user clearly recognize the duty of this device, comprises whether the complete machine power supply is suitable, and whether is carrying out the data write operation.

Because PC 8 inner integration USB master place controllers and USB interface A-TPYE end, after the utility model device inserts by USB cable 7, CPU1 carries out both-way communication by usb circuit 2 and PC 8, proposes the request of USB external unit to PC 8.Simultaneously CPU finishes the data communication with memory device part 3, and information is sent to PC 8 according to the data layout of usb protocol.PC is accurately distinguished the parameter model of memory device 3 (2.5 " hard disk), finishes the preliminary work of reading and writing data.

When PC 8 need read or write fashionable to storer 3, control signal, data-signal are given CPU1 with the data layout of USB by interface circuit 2, CPU carries out serial/parallel conversion by in house software to all data, control signal, data-signal are separated from the data of USB form, deliver to 2.5 according to the data layout of ATA/ATAPI-5 then " on the data bus of hard-disk interface, realize exchanges data with memory device 3 (2.5 " hard disk).

Above-mentioned memory device 3 also can be 3.5 " hard disk or CD-ROM drive, if the electric parameter of memory device greater than 5V/1A, just needs external power supply, promptly connect a power supply adaptor at memory device 3 places.

The utility model has overcome other all data mobile equipment and has comprised speed, price, security, easy-to-use The problem of the aspects such as property. Can say that the USB movable storage device brings novel concept to data mobile. Have Following advantage:

The first, be simple and easy to usefulness, be USB interface owing to what adopt, so this equipment is supported hot plug, can Freely to carry out transfer of data at each computer, easy and simple to handle, power supply, one need not be provided separately again Insert and get final product.

The second, speed is fast, and the transfer rate peak value of USB movable storage device can reach for 12,000,000/second, and is flat Average also can reach for 8,000,000/second, is 9-10 times of CD writer, and the 6-8 of MO doubly can also be directly In hard disk, make amendment, add, the same with common hard disk, the hard disk speed of sensation in operation and main frame There is not any difference on the degree yet.

The 3rd, security is good, does not worry that static can cause any infringement to hard disk, very well prevention General concussion in carrying, need not worry again that also sharp thing, dust etc. damage hard disk, high temperature or Magnetic field can not impact it yet.

The 4th, capacity is big, the capacity that can provide 5-30G not wait, minimum capacity be 5G, also be to hold The 10-20 of MO, CD and ZIP that amount is maximum doubly.

The 5th, carrying portable, whole size, weight only have the regular handset size, no matter be out of town trip, In mailing express delivery etc. remote mobile or unit and the family, all free and relaxed between unit and the unit.

Claims

1, a kind of movable storage device comprises memory device part (3), it is characterized in that, also comprise: usb circuit (2), link to each other with CPU (1), and link to each other with PC (8), be used to guarantee that the electric parameter of interface meets the USB standard criterion by USB cable (7);

Crystal oscillating circuit (4) links to each other with CPU (1), is used to guarantee that data transmit with given pace;

CPU (1) links to each other with described usb circuit, memory device part, crystal oscillating circuit;

USB cable (7) is used for described usb circuit (2) and is connected with PC;

Described memory device part (3) links to each other with CPU (1).

2, movable storage device according to claim 1 is characterized in that: also comprise power circuit (5), link to each other with CPU, be used to guarantee the operating voltage of CPU.

3, movable storage device according to claim 1 and 2 is characterized in that: described memory device part can be 2.5 " hard disk, 3.5 " hard disk also can be a CD-ROM drive.

4, movable storage device according to claim 3 is characterized in that: also have a power supply adaptor partly to link to each other with memory device.