CN203616758U - USB (universal serial bus) storage device with multilayer structure - Google Patents

Abstract

The utility model discloses a safe data USB (universal serial bus) storage device with a multilayer structure. The USB storage device is at least provided with two printed circuit board components, wherein each printed circuit board component comprises a memory for storing data and a controller for controlling the read-write of the memory; the printed circuit board components are connected in series with one another, and the data are exchanged between the adjacent printed circuit board components during the access of a user; the controller of at least one printed circuit board component has a safety function, and safety conditions defined by the user are required to be input when the memory of the printed circuit board with the controller with the safety function is accessed; one USB connector is used for connecting a USB interface in computer equipment, and is only connected with the first printed circuit board component; at least one printed circuit board component is provided with a USB concentrator for connecting each printed circuit board of the safe data USB storage device with the multilayer structure.

Description

The USB memory storage of sandwich construction

Affiliated technical field

The utility model relates to a kind of USB (universal serial bus) (USB) memory storage and other movable storage device that improves data security, comprises flash disk (or claiming USB flash disk), the hard disk with USB interface, the Multi Media Card (RAM (random access memory) card) with USB interface and the multimedia read-write card with USB interface of implementing by multimedia controller.Here the hard disk of indication can have different types, comprises the hard disk (IDE hard disk) of traditional parallel interface, hard disk (SATA hard disk), small computer system interface hard disk (SCSI hard disk) and the advanced solid state hard disc (SSD) of serial line interface.Multi Media Card comprises safe digital card (SD), multimedia card (MMC), compact flash (CF), memory stick (MS), most distinguished digital photograph card (xD) and similar data card.

The utility model is one can be connected in computer system, sandwich construction, portable memory storage (can be abbreviated as MULD here) by the USB interface of computer system.MLUD can be configured is difficult to by unauthorized access secure data wherein it, also can allow at the different layer of same MULD and have different data security characteristic (layer having can not have data security protecting).A complete MULD forms by connecting and be assembled in the printed circuit-board assembly assembling in same housing, two or more (referred to as PCBA).

Background technology

The security that is stored in the data in portable memory storage is that the user of these devices and the Security Officer who is responsible for the security of safeguarding sensitive information very pay close attention to.Along with the exploitation of small-sized portable memory storage, the safety issue of data further worsens because these small-sized portable memory storages easily lose, also easily stolen.A lot of rising occurred in recent years and violated the example that data/Information Security stipulates, be not good at keeping because stolen, the sensitive data being stored in portable data storage device is disclosed.Along with popularizing of internet, even, before people can take any step, loss or stolen sensitive data can easily, promptly be transmitted to All Around The World.Once sensitive information leaks on internet, these sensitive informations conventionally can not be regained.For the personnel that are responsible for the security of taking care of these sensitive information/data, being disclosed of these sensitive information/data can bring them sizable misery and responsibility.

In order to alleviate sensitive data by unauthorized disclosed risk, safeguard measure is used, and comprises cryptoguard, fingerprint recognition, locking mechanism etc.But, or need the security that further strengthens USB memory storage to reduce breach of security principle and the unauthorized use of sensitive data and the risk of propagation.

Utility model content

The two or more printed circuit-board assemblies that are cascaded by employing, applicant has developed a USB memory storage for the protection of the sandwich construction of the sensitive information/data in USB memory storage.Originally, user is only with the data in access ground floor structure.User must understand and follow certain access principles, just can reference string be coupled to the data in other each layer of structure of ground floor structure.Understanding based on whether other each layer of structure is existed also adopts correct access principles, and user just can successfully connect and access the data in other each layer of structure.Even so; can also adopt extra tightening security property of safety practice also to resist unauthorized access, for example cryptoguard, fingerprint recognition, data encryption, digital copyright management (DRM), security token, data mask, antivirus software and/or other safeguard measure.All each layer of the USB memory storage of sandwich construction is all encapsulated in a housing, can reduce unauthorized user and understand and attempt access other risk of each layer except ground floor.

The USB memory storage of applicant's sandwich construction can be configured to more responsive deposit data in the structure further from ground floor.For example, in the USB of three-decker memory storage, ground floor structure can be configured to without any security feature, the data of, non-secret non-sensitive for depositing.Lower one deck structure (second layer structure) of series connection can take comparatively simple security doctrine as simple mouse clicking operation, to deposit the data of sensitivity or secret, also can adopt password to strengthen protection.Be series at second layer three-decker afterwards for depositing the most responsive data, have the protection of highest level.Possible method be on touch-screen with the predefined point of predefined sequential touches, then require user to input security token system with visit data.

In the case of because lose or stolen and attempting access sensitive data of causing, a lot of unauthorized users may and not known the thing the ground floor structure in the USB memory storage housing except being encapsulated in sandwich construction.If they do not understand other existence of each layer, the sensitive data of depositing in other each layer of structure just can not be accessed.Even if they attempt to access the data in second layer structure, extra protection can prevent the unauthorized access of the data in second layer structure as password or other security feature.

As a further optional security feature of applicant's utility model, if configured digital copyright management (DRM) function in USB memory storage, deposit in instruction that the data in any one deck structure of this memory storage can pass through central database server (CDS) by long-range deletion.

The USB memory storage of the sandwich construction of applicant's utility model is made up of three major parts, an outside housing, at least two printed circuit-board assemblies and a typical USB connector.These printed circuit-board assemblies are made up of one or more access, control assembly, comprise that USB control chip, usb hub chip, code generator chip, other safety chips are as fingerprint recognition chip, flash chip, typical general device and the public device of USB memory storage.These combinations can for by the second layer in same housing described here and more the storage area in high-level structure extra safety is provided.

As a further characteristic, one or more printed circuit-board assemblies comprise usb hub to connect each layer of structure of same memory storage inside, and every one deck can be used as an independently USB memory storage.The common connector that those skilled in the art are familiar with is used for connecting physically each layer of structure.

The USB memory storage of applicant's sandwich construction can be for USB memory storage and the RAM (random access memory) card of other type, the hard disk of such as USB interface, safe digital card (SD), Miniature safety digital card (micro SD), small-sized safety digital card (mini SD), multimedia card (MMC), miniature multimedia card (MMC micro), memory stick (MS, MSDUO), compact flash (CF), personal computer memory interface card (PCMCIA), most distinguished digital photograph card (xD) etc.

Advantage

The USB memory storage of applicant's sandwich construction has the following advantages:

1. confidential data content can be by depositing in more in high-level structure to carry out physical protection, and (non-) authorized user need to just can access sensitive data content through which floor safety practice.

2. confidential data is deposited in more high-rise rather than ground floor structure, like this can be by more high-rise being hidden of shielding.

3. confidential data is deposited in more high-rise rather than ground floor structure, like this can by certain methods comprise via harmless icon visit more high-level structure so that user to access these data more difficult, equally also making unauthorized user be difficult to identify an icon is to enter the more entrance of high-level structure.

4. by reasonably configuring the code formation controller (CGC) in every one deck structure, access higher level structure can only be by inputting the code that be specified by code formation controller.

5. the He Bu protected field, protected field of the USB memory storage of sandwich construction separates physically, and the He Bu protected field, protected field of other USB memory storage is to be distinguished by the software of depositing in the same area.Like this, for the USB memory storage of protecting with respect to the software based on depositing in the same area, in the protected field of the USB memory storage of sandwich construction, on physical layer, just there is more higher leveled protection.

6. every one deck structure can be configured to have different security features according to fabricator's wish, comprises different memory capacity.Certain one deck structure needn't have identical memory capacity with another layer.Every one deck structure can be configured to protected or not protected, and the configuration of whole like this USB memory storage can be more flexible.

7. the USB memory storage with the sandwich construction of code formation controller can be registered to central database server by internet or other network.Central database server can be configured to send instruction secure ground, remotely delete or the USB memory storage of the sandwich construction of more new registration in content.Every one deck that this management function can be designed to the USB memory storage to sandwich construction carries out independent control.

8. because the USB memory storage of sandwich construction has multiple printed circuit-board assemblies (layer); each printed circuit-board assembly has different security configurations as cryptoguard, fingerprint recognition, encryption etc., and it is more difficult that this can make to access data in higher level structure conventionally.

In a word; because the USB memory storage of sandwich construction has multiple printed circuit-board assemblies (layer); this USB memory storage can be configured to have different layers, and every one deck can be configured to have different memory capacity and security feature, even comprise certain one deck is configured to not protected.A central database server can neatly, remotely be controlled every one deck or all layers of the USB memory storage of a sandwich construction.

Accompanying drawing explanation

Fig. 1 is the existing not internal component schematic diagram of the USB memory storage with safe storage.

Fig. 2 is the internal component schematic diagram of the existing USB memory storage with safe storage.

Fig. 3 is the existing not internal component schematic diagram of the USB memory storage of tape code generating chip with safe storage.

Fig. 4 is the internal component schematic diagram of the existing USB memory storage with safe storage and code generating chip.

Fig. 5 be existing not with safe storage with the internal component schematic diagram of the USB memory storage of usb hub chip.

Fig. 6 is the internal component schematic diagram of the existing USB memory storage with safe storage and usb hub chip.

Fig. 7 is the existing not internal component schematic diagram of the USB memory storage with usb hub chip and code generating chip with safe storage.

Fig. 8 is the internal component schematic diagram of the existing USB memory storage with safe storage, usb hub chip and code generating chip.

Fig. 9 is the internal component schematic diagram of the USB memory storage of existing band safe storage, code generating chip (CGC), fingerprint recognition chip and finger scan connector.

Figure 10 is a schematic diagram of the internal component of the USB memory storage (MLUD) of sandwich construction of the present utility model.The not printed circuit-board assembly with safe storage shown in Fig. 5 is as its ground floor structure, and the printed circuit-board assembly with safe storage shown in Fig. 4 is as the higher level structure being series at thereafter.

Figure 11 is another schematic diagram of the internal component of the USB memory storage (MLUD) of sandwich construction of the present utility model.The not printed circuit-board assembly with safe storage shown in Fig. 5 is as its ground floor structure, and the printed circuit-board assembly with safe storage shown in Fig. 4 is as series connection higher level structure thereon.

Figure 12 is another schematic diagram of the internal component of the USB memory storage (MLUD) of sandwich construction of the present utility model.The not printed circuit-board assembly with safe storage shown in Fig. 5 is as its ground floor structure, the printed circuit-board assembly with safe storage shown in Fig. 4 is as the structure of its high one deck, and the printed circuit-board assembly with safe storage shown in Fig. 9 is as the structure of its higher level.Printed circuit-board assembly shown in Fig. 4 is series on the printed circuit-board assembly shown in Fig. 5, and the printed circuit-board assembly shown in Fig. 9 is series on the printed circuit-board assembly shown in Fig. 4.

Figure 13 is another schematic diagram of the internal component of the USB memory storage (MLUD) of sandwich construction of the present utility model.The printed circuit-board assembly with safe storage shown in Fig. 6 is as its ground floor structure, the not printed circuit-board assembly with safe storage shown in Fig. 1 is as the structure of its high one deck, and the printed circuit-board assembly with safe storage shown in Fig. 9 is as the structure of its higher level.Printed circuit-board assembly shown in Fig. 9 is series on the printed circuit-board assembly shown in Fig. 1, and the printed circuit-board assembly shown in Fig. 1 is series on the printed circuit-board assembly shown in Fig. 6.

Figure 14 is another schematic diagram of the internal component of the USB memory storage (MLUD) of sandwich construction of the present utility model.The printed circuit-board assembly with safe storage shown in Fig. 8 is as its ground floor structure, the printed circuit-board assembly with safe storage shown in Fig. 4 is as the structure of its high one deck, and the printed circuit-board assembly with safe storage shown in Fig. 9 is as the structure of its higher level.Printed circuit-board assembly shown in Fig. 9 is series on the printed circuit-board assembly shown in Fig. 4, and the printed circuit-board assembly shown in Fig. 4 is series on the printed circuit-board assembly shown in Fig. 8.

Figure 15 is the schematic diagram of the internal component of the USB memory storage (MLUD) of the sandwich construction shown in Figure 12, has also comprised a housing with fingerprint scanner (60).

Figure 16 is the schematic diagram of the internal component of the USB memory storage (MLUD) of sandwich construction of the present utility model.The not printed circuit-board assembly with safe storage shown in Fig. 5 is as its ground floor structure, the series connection of the printed circuit-board assembly with safe storage shown in Fig. 4 thereon, as its high one deck structure.In figure, also illustrate the data flow of MULD.

Figure 17 is the schematic diagram of the internal component of the memory storage (MLUD) of the sandwich construction shown in Figure 12, has also comprised a housing with fingerprint scanner (60).In figure, also illustrate the data flow of MLUD.

Fig. 17 ?1 be the schematic diagram of the internal component of the USB memory storage (MLUD) of sandwich construction of the present utility model.The not printed circuit-board assembly with safe storage shown in Fig. 5 is as its ground floor structure, the printed circuit-board assembly with safe storage shown in a slice Fig. 4 is as its high one deck structure, the printed circuit-board assembly with safe storage shown in another sheet Fig. 4 is as its higher level structure, the printed circuit-board assembly with safe storage shown in Fig. 9, as its maximum layer structure, has fingerprint scanner (60) on housing.On printed circuit-board assembly shown in second Fig. 4 that printed circuit-board assembly shown in Fig. 9 is series at, printed circuit-board assembly shown in second Fig. 4 is series on the printed circuit-board assembly shown in first Fig. 4, and the printed circuit-board assembly shown in first Fig. 4 is series on the printed circuit-board assembly shown in Fig. 5.

Figure 18 is the process flow diagram of the serial data stream of the USB memory storage (MLUD) of the sandwich construction shown in Figure 17.

Figure 19 is the schematic diagram of the internal component of the USB memory storage (MLUD) of sandwich construction, comprises the not printed circuit-board assembly with safe storage shown in the printed circuit-board assembly with safe storage shown in the printed circuit-board assembly with safe storage, Fig. 4, Fig. 9 and the housing with fingerprint scanner shown in Fig. 5.Each printed circuit-board assembly is in state in parallel.

Figure 20 is the process flow diagram of the parallel data stream of the USB memory storage (MLUD) of the sandwich construction shown in Figure 19.

Figure 21 and central database server are carried out the schematic diagram of the USB memory storage (MLUD) of the sandwich construction shown in wired, long-range Figure 17 being connected, and server can be controlled MLUD and function thereof.

Figure 22 is the schematic diagram that the printed circuit-board assembly shown in Fig. 5 and Fig. 9 is carried out to the sectional drawing of the screen display of parameter configuration.

Figure 23 is the schematic diagram that the utility model can be applied to other exemplary storage system, and one is the safe digital card (SD) that has two flash memories, and another is the portable hard disk unit that has two hard disks.

Embodiment

Function and the security of the utility model to USB memory storage proposed improvement, and these devices comprise USB flash disk (or USB portable hard drive), memory stick, RAM (random access memory) card and other portable data storage device.The USB memory storage (MLUD) of applicant's sandwich construction provides the security physically of digital content, and its each layer of structure can be independently, can have different security settings.

The USB memory storage (MLUD) of sandwich construction is stored in sensitive data in each physical arrangement layer of MLUD safely, and these layers can be built-in with separately different independently security settings.

Fig. 1 to Fig. 9 is the schematic diagram of the internal component of the USB memory storage of existing various different configurations.What these schematic diagram were described is printed circuit-board assembly (sometimes can be described as PCBA), and they have comprised some conventional components and parts below.

Take Fig. 1 as example, it has shown by PCBA(100) the USB memory storage that forms.USB connector (50) is a typical connector that can insert the USB interface of computing machine or other electronic equipment, and USB memory storage carries out exchanges data by it and computing machine or other electronic equipment.USB connector (50) and PCBA(100) printed circuit board (PCB) (52) be connected to can carry out data exchange between the two.In figure, in general manner, schematically shown PCBA(100) normal work essential other several extra components and parts (54), they are that those of skill in the art are familiar with, daily use, the PCBA necessary components and parts of normally working.The another side of printed circuit board (PCB) (52) not showing in figure also have make PCBA(100) the required components and parts of normally working are connected with circuit.PCBA(100) also comprised the flash memories (15) for receiving, store, send data.

The difference of PCBA shown in Fig. 1 to Fig. 9 is described below.

Fig. 1 is the existing not PCBA(100 with safe storage) the schematic diagram of internal component, it comprises the USB controller chip (11) of not being with security.User needn't just can access PCBA(100 by any safety practice) on flash memories (15) in data.

Fig. 2 is the existing PCBA(200 with safe storage) the schematic diagram of internal component, it comprises the USB controller chip (12) with security.Only have and successfully passed through safety requirements and just can access the data in flash memories (15) as the user of username and password checking.

Fig. 3 is the existing not PCBA(300 with safe storage) the schematic diagram of internal component, it comprises USB controller chip (11) and the code generator chip (13) of not being with security.The user who only has the safety inspection of successfully having passed through code generator chip (13) to require just can access the data in flash memories (15).

Fig. 4 is the existing PCBA(400 with safe storage) the schematic diagram of internal component, it comprises code generator chip (13) and the USB controller chip (12) with security.The function of chip (12) control security, for example encryption or user name and password.Only have the safety inspection of not only having passed through code generator chip (13) to require, but also passed through other safety practice and just can access the data in flash memories (15) as the user of user name and password authentification.

Fig. 5 is the existing not PCBA(500 with safe storage) the schematic diagram of internal component, it comprises usb hub chip (14) and the USB controller chip (11) with security not.User needn't just can access PCBA(500 by any safety practice) on flash memories (15) in data.

Fig. 6 is the existing PCBA(600 with safe storage) the schematic diagram of internal component, it comprises usb hub chip (14) and the USB controller chip (12) with security.In the utility model, the function of usb hub chip (14) can be described in the back.Only have the user who has successfully passed through for example user name of security requirement and password authentification just can access the data in flash memories (15).

Fig. 7 is the existing not PCBA(700 with safe storage) the schematic diagram of internal component, it comprises USB controller chip (11), usb hub chip (14) and the code generator chip (13) of not being with security.The user who only has the safety inspection of successfully having passed through code generator chip (13) to require just can access the data in flash memories (15).

Fig. 8 is the existing PCBA(800 with safe storage) the schematic diagram of internal component, it comprises USB controller chip (12), usb hub chip (14) and code generator chip (13) with security.In the utility model, the function of usb hub chip (14) can be described in the back.Only have the safety inspection of not only having passed through code generator chip (13) to require, but also passed through other safety practice and just can access the data in flash memories (15) as the user of user name and cryptographic check.

Fig. 9 is the existing PCBA(900 with safe storage) the schematic diagram of internal component, it comprises USB controller chip (12), code generator chip (13), fingerprint recognition chip (18) and fingerprint scanner connector (19) with security.Only have the safety inspection of not only successfully having passed through code generator chip (13) require, but also the safety inspection of successfully having passed through USB controller chip (12) just can access the data in flash memories (15) as user name and password authentification, the user that successfully passed through the fingerprint authentication being undertaken by fingerprint recognition chip (18) and fingerprint scanner connector (19).

USB memory storage based on shown in Fig. 1 to Fig. 9, with reference to Figure 10 to Figure 23, the preferred embodiment of applicant's utility model will be described below.

Figure 10 is the schematic diagram of the internal component of (70) examples of USB memory storage (MLUD) of sandwich construction of the present utility model, and it comprises as the not PCBA(500 with safe storage ground floor structure, shown in Fig. 5) and as the PCBA(400 with safe storage high one deck structure, shown in Fig. 4).PCBA(400) be series at PCBA(500) afterwards.PCBA(500) operate and be connected with computing machine or other electronic equipment by USB connector (50).PCBA(500) by the not data access with security verification of USB controller chip (11) with security not.

PCBA(500) the usb hub chip (14) on expands to the single USB interface of the computing machine in Figure 21 (40) or other USB electronic equipment can connect MLUD(70) in PCBA(500) and multiple USB interface PCBA(400).In other embodiments, usb hub chip (14) also can be for connecting other PCBA to computing machine (40).In addition, usb hub chip (14) also can provide PCBA(500) on USB controller chip (11) and PCBA(400) on USB controller chip (12) information in case computing machine (40) understand MLUD(70) by PCBA(500) and PCBA(400) form, computing machine (40) can optionally be determined their priority level and control like this.

User can be not just not access PCBA(500 by input password or other safety practices) on flash memories (15) in data.PCBA(400) be series at PCBA(500) afterwards, rather than directly at USB connector (50) afterwards, pass through PCBA(500) on USB controller chip (11) swap data.The data access of the flash memories (15) PCBA(400) is controlled by USB controller chip (12) and code generator chip (13).Only have the safety inspection of not only having passed through code generator chip (13) require, but also the safety inspection of having passed through USB controller chip (12) require could access PCBA(400 as the user of user name and password authentification) on flash memories (15) in data.

Figure 11 is the schematic diagram of the internal component of (80) examples of USB memory storage (MLUD) of sandwich construction of the present utility model, comprises as the not PCBA(500 with safe storage ground floor structure, shown in Fig. 5) and as the PCBA(400 with safe storage high one deck structure, shown in Fig. 4).PCBA(400) be series at PCBA(500) on.PCBA(500) operate and be connected with computing machine or other electronic equipments by USB connector (50).PCBA(500) by the not storage operation with security of USB controller chip (11) with security not.

PCBA(500) the usb hub chip (14) on expands to the single USB interface of the computing machine in Figure 21 (40) or other electronic equipment can be MLUD(80) in PCBA(500) and PCBA(400) multiple USB interface of linking together.In other embodiments, the PCBA that usb hub chip (14) also can connect other is to computing machine.In addition, usb hub chip (14) can provide MLUD(80 to computing machine) in PCBA(500) USB controller chip (11) and the information of USB controller chip (12) PCBA(400) so that computing machine is understood MLUD(80) in have PCBA(500) and PCBA(400), computing machine just can optionally be determined their priority level and control.

User can just access PCBA(500 by input password or other safety practice) on flash memories (15) in data.PCBA(400) be series at PCBA(500) on, and with it alignment, pass through PCBA(500) USB controller chip (11) carry out serial data exchange.PCBA(400) have a female connectors (17 ?1), PCBA(500) have a public connector (17) and a PCBA(400) female connectors (17 ?1) operate and be connected.PCBA(500) public connector (17) and PCBA(400) female connectors (17 ?1) be connected, not only the two is mechanically combined, and provides connection on electric so that at PCBA(500) controller (11) and controller PCBA(400) (12) swapping data.To PCBA(400) on flash memories (15) in the access of data controlled by its controller (12) and code generator (13).Only have the safety inspection of not only successfully having passed through code generator (13) require, but also the safety inspection of successfully having passed through USB controller chip (12) require could access PCBA(400 as the user of user name and password authentification) on flash memories (15) in data.

Figure 12 is the schematic diagram of the internal component of (90) embodiment of USB memory storage (MLUD) of sandwich construction of the present utility model, and it comprises as the not PCBA(500 with safe storage ground floor structure, shown in Fig. 5) and as the PCBA(400 with safe storage high one deck structure, shown in Fig. 4) and as the PCBA(900 with safe storage higher level structure, shown in Fig. 9).PCBA(900 shown in Fig. 9) be series at the PCBA(400 shown in Fig. 4) on, the PCBA(400 shown in Fig. 4) be series at the PCBA(500 shown in Fig. 5) on.PCBA(500) connection and PCBA(400) and operation are as the description in above-mentioned Figure 11.

But, PCBA(500) on usb hub chip (14) the single USB interface of the computing machine in Figure 21 (40) or other electronic equipments is expanded to and can connect MLUD(90) in PCBA(500), PCBA(400) with PCBA(900) multiple USB be connected.Exist at other embodiment, usb hub chip (14) also can be for the PCBA that connects other to computing machine.Usb hub chip (14) can also be by PCBA(500) on USB controller chip (11), PCBA(400) on USB controller chip (12) and PCBA(900) on the information of USB controller chip (12) offer computing machine so that computing machine is optionally determined their priority level and is controlled.

PCBA(900) be series at PCBA(400) on, and with it alignment, carry out the electrical connection of operability, so that and PCBA(400) on controller (12) carry out serial data exchange.PCBA(400) have two connectors, one is Male connector (17), and another is female connector (17 ?1).PCBA(900) only has a female connector (17 ?1).PCBA(400) Male connector (17) and PCBA(900 on) on female connector (17 ?1) be connected, both mechanically the two was fixed together, again form electrical connection so that at PCBA(400) on controller (12) and PCBA(900) on controller (12) between swap data.Only have and not only successfully passed through PCBA(900) on the safety inspection of code generator (13) require, but also successfully passed through PCBA(900) on the safety requirements of USB controller chip (12) as user name and password authentification, passed through by PCBA(900) on fingerprint recognition chip (18) and the user of the fingerprint authentication that carries out of finger scan connector (19) and fingerprint scanner could access PCBA(900) on flash memories (15) in data.

As an option of code generator (13), subscriber authorisation can be verified through internal storage access.And the code of generation can be stored in USB controller chip (12), also can be stored in internal memory simultaneously.PCBA(900) the USB controller chip (12) on and code generator chip (13) can carry out cross-check betwixt, so that extra security to be provided.

Figure 13 is the schematic diagram of the internal component of (91) embodiment of USB memory storage (MLUD) of sandwich construction of the present utility model, and it comprises as the PCBA(600 with safe storage ground floor structure, shown in Fig. 6) and as the not PCBA(100 with safe storage high one deck structure, shown in Fig. 1) and as the PCBA(900 with safe storage higher level structure, shown in Fig. 9).PCBA(900) be series at PCBA(100) on, PCBA(100) be series at PCBA(600) on, PCBA(600) operate and be connected with computing machine or other electronic equipments by USB connector (50).

PCBA(100) be series at PCBA(600) on, alignment, and and PCBA(600 with it) on controller (12) be electrically connected so that swap data serially.PCBA(100) have a female connectors (17 ?1), PCBA(600) there is a public connector (17) to operate with it connection.PCBA(600) public connector (17) and PCBA(100) female connectors (17 ?1) be connected, both mechanically the two was fixed together, provide again electrical connection so that PCBA(600) on controller (12) and PCBA(100) on controller (11) carry out exchanges data.The access of the data in the flash memories (15) PCBA(100) is controlled by USB controller chip (11).Only have and successfully passed through PCBA(600) on the safety requirements of USB controller chip (12) could access PCBA(100 as the user of user name and password authentification) on flash memories (15) in data.Due to PCBA(100) be to be controlled by the controller with security (11) not, access PCBA(100) on flash memories (15) in data without extra control.

PCBA(900) be series at PCBA(100) on, alignment, and and PCBA(100 with it) on controller (11) be electrically connected so that swap data serially.PCBA(100) have two connectors, one is public connector (17), and another is female connectors (17 ?1).PCBA(900) there is a female connectors (17 ?1).PCBA(100) public connector (17) and PCBA(900 on) on female connectors (17 ?1) be connected, both mechanically the two was fixed together, provide again electrical connection so that at PCBA(100) on controller (11) and PCBA(900) on controller (12) between carry out exchanges data.Only have and both successfully passed through PCBA(600) on the safety requirements of USB controller chip (12), successfully passed through again PCBA(900) on the safety requirements of USB controller chip (12) as user name and password authentification, successfully passed through again PCBA(900) on the safety inspection requirement of code generator (13), also successfully passed through PCBA(900) user of the upper fingerprint authentication being undertaken by fingerprint recognition chip (18) and finger scan connector (19) could access PCBA(900) on flash memories (15) in data.

PCBA(600) the usb hub chip (14) on expands to the single USB interface of the computing machine in Figure 21 (40) or other USB electronic equipment can be MLUD(91) in PCBA(600), PCBA(100) and PCBA(900) multiple USB interface of linking together.In other embodiments, usb hub chip (14) also can connect other PCBA to computing machine.In addition, usb hub chip (14) also provides PCBA(600) on controller (12), PCBA(100) on controller (11) and PCBA(900) on the information of controller (12) to computing machine, so that computing machine is optionally determined their priority level and controlled.

Figure 14 is the schematic diagram of the internal component of (92) embodiment of USB memory storage (MLUD) of sandwich construction of the present utility model, and it comprises as the PCBA(800 with safe storage ground floor structure, shown in Fig. 8) and as the PCBA(400 with safe storage high one deck structure, shown in Fig. 4) and as the PCBA(900 with safe storage higher level structure, shown in Fig. 9).PCBA(900) be series at PCBA(400) on, PCBA(400) be series at PCBA(800) on.PCBA(800) be electrically connected by USB connector (50) and the USB interface of computing machine or other electronic equipment.

PCBA(400) be series at PCBA(800) on, with it alignment, form electrical connection, and and PCBA(800) on controller (12) carry out serial data exchange.PCBA(400) have a female connectors (17 ?1), PCBA(800) there is a public connector (17) to operate with it connection.PCBA(800) public connector (17) and PCBA(400 on) on female connectors (17 ?1) be connected, not only mechanically the two has been fixed together, but also form electrical connection so that PCBA(800) on controller (12) and PCBA(400) on controller (12) between swap data.Access PCBA(400) on flash memories (15) in data to pass through PCBA(800) on USB controller chip (12) and code generator chip (13).Only have and both successfully passed through PCBA(800) on the safety inspection requirement of code generator chip (13), successfully passed through again PCBA(800) on the safety requirements of USB controller chip (12) as user name and password authentification, successfully passed through again PCBA(400) on the safety inspection requirement of code generator chip (13), also successfully passed through PCBA(400) on the safety requirements of USB controller chip (12) could access PCBA(400 as the user of user name and password authentification) on flash memories (15) in data.

PCBA(900) be series at PCBA(400) on, with it alignment, form electrical connection, and and PCBA(400) on controller chip (12) carry out serial data exchange.PCBA(400), with two connectors, one is Male connector (17), another is female connector (17 ?1).PCBA(900) there is a female connector (17 ?1).PCBA(400) Male connector (17) and PCBA(900 on) on female connector (17 ?1) be connected, not only mechanically the two has been fixed together, but also form on electric connect so that PCBA(400) on controller (12) and PCBA(900) on controller (12) between carry out exchanges data.Only have and not only successfully met PCBA(800) all safety requirements, but also successfully met PCBA(400) all safety requirements but also successfully met PCBA(900) the user of all safety requirements could access PCBA(900) on flash memories (15) in data.PCBA(800) safety requirements comprises that the checking of code generator chip (13) and the safety inspection of USB controller chip (12) require as user name and password authentification.PCBA(400) safety requirements comprises that the checking of code generator chip (13) and the safety inspection of USB controller chip (12) require as user name and password authentification.PCBA(900) safety requirements comprises that the safety inspection of checking, the USB controller chip (12) of code generator chip (13) requires as user name and password authentification and the fingerprint matching undertaken by fingerprint recognition chip (18) and finger scan connector (19) and fingerprint scanner are verified.

PCBA(800) the usb hub chip (14) on expands to the single USB interface of the computing machine in Figure 21 (40) or other USB electronic equipment can be MLUD(92) in PCBA(800), PCBA(400) and PCBA(900) multiple USB interface of linking together.Exist at other embodiment, usb hub chip (14) also can connect other PCBA to computing machine (40) by USB interface (50).And, usb hub chip (14) can provide PCBA(800) on controller (12), PCBA(400) on controller (12) and PCBA(900) on the information of controller (12) to computing machine (40), so that computing machine (40) is understood MLUD(92) in exist PCBA(800), PCBA(400) and PCBA(900), can optionally determine their priority level and control.

Figure 15 is the schematic diagram that comprises the internal component of the USB memory storage (MLUD) (90) of the sandwich construction of external shell (21).It comprises whole, the external shell (21) shown in Figure 12 and fingerprint scanner (60).Whole components and parts shown in Figure 12 are exactly PCBA(500 specifically), PCBA(400) and PCBA(900), be all encapsulated in external shell (21), under normal circumstances from housing (21) outside they be sightless.As described in Figure 12 part above, can be to PCBA(500), PCBA(400) with PCBA(900) configuration, be connected and operate.Fingerprint scanner (60) is connected to fingerprint recognition chip (18) by finger scan connector (19).

Due to PCBA(400) and PCBA(900) have a code generator chip (13), they can generate unique code separately.If they have unique code separately, they can be at PCBA(400 so) and PCBA(900) internal work carry out the safe cross functional verification between USB controller chip (12) and code generator chip (13).And as shown in figure 21, central database server (30) can be using PCBA(400) and PCBA(900) as USB memory storage independently.Central database server (30) can be carried out administration PC BA(400 according to different safe classes) and PCBA(900).

Figure 16 is the schematic diagram of the internal component of (80) embodiment of USB memory storage (MLUD) of sandwich construction of the present utility model.With reference to the description of above-mentioned Figure 11, it comprises as the not PCBA(500 with safe storage ground floor structure, shown in Fig. 5) and as the PCBA(400 with safe storage high one deck structure, shown in Fig. 4).PCBA(400) be series at PCBA(500) on.In Figure 16, also schematically show serial data flow process when user operates MLUD.Data enter MLUD by USB interface (50), then enter the controller (11) of not being with security, finally access PCBA(500) on flash memories (15).User also can pass through PCBA(400) on the controller with safe storage (12) access PCBA(400) on flash memories (15) in data.PCBA(400) safety requirements comprises that the code check of code generator chip (13) and the safety inspection of USB controller chip (12) require as user name and password authentification.

Figure 17 is the schematic diagram of the internal component of (90) embodiment of USB memory storage (MLUD) of sandwich construction of the present utility model.With reference to the description of above-mentioned Figure 12, it comprises as the not PCBA(500 with safe storage ground floor structure, shown in Fig. 5) and as the PCBA(400 with safe storage high one deck structure, shown in Fig. 4) and as the PCBA(900 with safe storage higher level structure, shown in Fig. 9).PCBA(900) be series at PCBA(400) on, PCBA(400) be series at PCBA(500) on.In Figure 17, also schematically show serial data flow process when user operates MLUD, and external shell (21) and fingerprint scanner (60).Data are described in Figure 16 via USB connector (50), PCBA(500) and flow process PCBA(400).Only have and successfully passed through PCBA(900) on the security code checking of code generator chip (13), successfully met again PCBA(900) on the safety requirements of USB controller chip (12) as user name and password authentification, but also met by PCBA(900) on fingerprint recognition chip (18) and the user that requires of the fingerprint authentication that carries out of finger scan connector (19) and fingerprint scanner (60) could access PCBA(900) on flash memories (15) in data.The data stream of the flash memories (15) PCBA(900) is through USB connector (50), PCBA(500) on the not controller with safe storage (11), PCBA(400) on the controller with safe storage (12) and PCBA(900) on the controller with safe storage (12).

With reference to Figure 16, in the time that the USB of sandwich construction memory storage (MLUD) is connected to computing machine (40), PCBA(500 only can be identified and see to computing machine (40)).Access PCBA(500) time, user can see a connection PCB A(400) icon.Access PCBA(500) on flash memories (15) in data without by any safety practice, because PCBA(500) be not to be with security.Due to PCBA(400) there is the USB controller chip (12) with safe storage, user must could access PCBA(400 as password etc. by safety practice) on flash memories (15).If password is not right, user cannot access PCBA(400) on flash memories (15) in data.

With reference to Figure 17, it provides the PCBA(900 as higher level structure).PCBA(900) there is USB controller chip (12), code generator chip (13) and the fingerprint recognition chip (18) with safe storage.In order to access PCBA(900) on flash memories (15) in data, first user must pass through PCBA(500).Access PCBA(500) without by any safety practice.Access PCBA(500) time, perhaps user understands the PCBA that has a visible icon or other means can be connected to lower one deck structure.This icon that perhaps needs to click on screen visits PCBA(400).Access PCBA(400) on flash memories (15) in data time, user must be by the safety inspection of the USB controller chip (12) with safe storage, as user name and password authentification.Access PCBA(400) time, user moves to understand has a visible icon or other means can be connected to the PCBA of lower one deck structure.This icon that perhaps needs to click on screen visits PCBA(900).PCBA(900) connect a fingerprint scanner, this will cause that its fingerprint of scanning input is to conduct interviews.If fingerprint scanner confirms that user's fingerprint is the fingerprint of having obtained the authorization, this user just can access PCBA(900) on flash memories (15) in data.This process is in sequence, and user must can access all low layers, just can be allowed to access higher level.

As example further, with reference to Fig. 17 ?1, the PCBA(500 of the USB memory storage (MLUD) (90) of sandwich construction), PCBA(400) (two) and PCBA(900) be connected by connector (17) and connector (17 ?1).PCBA(500) the upper not memory storage with security with usb hub chip (14), PCBA(400) and PCBA(900) be all the memory storage with security that has code generator chip (13).As an example, user can be configured to these PCBA as follows: once insert computing machine (40), the PCBA(500 in the USB memory storage (MLUD) of sandwich construction) on data can be accessed by anyone.

Showing PCBA(500) on the computer screen of information, click an icon, just can access the PCBA(400 of lower one deck structure of the USB memory storage (MLUD) of sandwich construction) (first), this needs password certainly.In addition PCBA(500) on flash memories (15) in data can be configured to as " allow print ", " allowing editor ", " forbidding copy ", " forbidding e-mail " etc..

Showing first PCBA(400) the computer screen of information on, click an icon, just can access the PCBA(400 of lower one deck structure) (second), this also needs password.And, PCBA(400) data in (first and second) also can be configured to as " allowing to print ", " allowing editor ", " forbidding copy ", " forbidding e-mail " etc.

Showing second PCBA(400) the computer screen of information on, click an icon, just can access the PCBA(900 of lower one deck structure), this needs another password.In addition, also can require to carry out fingerprint authentication by fingerprint recognition chip (18).And, PCBA(900) on flash memories (15) in data also can be configured to " read-only ", " forbid copy " etc.

In a word, in order to access PCBA(900) in data, user need to pass through three cryptoguard (first PCBA(400), second PCBA(400) and PCBA(900)) and a PCBA(900) fingerprint authentication.Even so, PCBA(900) on flash memories (15) in data can also be " read-only " and " forbid copy ".

Further, if these two PCBA(400) and this slice PCBA(900) unique code that generates registered in central database server (30), when central database server (30) can be reported, what data who accessed.And central database server (30) can be uploaded required data to the USB memory storage (MLUD) of sandwich construction of specifying, also can delete the data in the USB memory storage (MLUD) of sandwich construction of appointment.

For other PCBA combination, user also can configure the USB memory storage (MLUD) of whole sandwich construction otherwise.

Figure 18 is the alphabetic data browsing process figure of the simplification of the USB memory storage (MLUD) of the sandwich construction shown in Figure 17.

Figure 19 is the schematic diagram of the internal component of the USB memory storage (MLUD) of sandwich construction, it comprises the not PCBA(500 with safe storage shown in Fig. 5), the PCBA(400 with safe storage shown in Fig. 4) and Fig. 9 shown in the PCBA(900 with safe storage), three is through usb hub chip (14) parallel connection.In figure, also show and had the housing of fingerprint scanner (60) (21).

Figure 20 is the process flow diagram of the parallel data access of the USB memory storage (MLUD) of the sandwich construction shown in Figure 19.

Figure 21 operate with central database server (30) be connected, the schematic diagram of the internal component of the USB memory storage (MLUD) of the sandwich construction shown in Figure 17.By wired or long-range connection, central database server can be controlled USB memory storage (MLUD) and the function thereof of the sandwich construction shown in Figure 17.

Figure 22 is the schematic diagram that the USB memory storage (MLUD) of the sandwich construction of the present utility model to being made up of the PCBA shown in Fig. 5 and Fig. 9 is controlled the screen display of parameter configuration.

Figure 23 is adaptable other the schematic diagram of two embodiment of the utility model, and one is the safe digital card (SD) that has two flash memory devices, and another is the portable hard disk of one or two flash memory device.Exist at each embodiment, these interior arrangements (class is designated as 1000, another kind of be designated as 1100) are upper connected in series, and a device is as ground floor, and another is as lower one deck.Their class of operation is similar to described in Figure 11 and Figure 16.

Each PCBA can have several dissimilar secure options, as password, encryption, fingerprint recognition, digital copyright management (DRM), security token, data mask, virus killing etc.

As long as housing (21) space is enough, can add therein extra PCBA.

As an option, the code generator chip (13) comprising in the USB memory storage (MLUD) of a sandwich construction can be configured to accept the instruction that computing machine (40) comes, and this instruction is effective equally to all PCBA in this MLUD.For example, be " deleting all data " from this instruction of computing machine (40), the data in all PCBA in this MLUD all can be deleted.In addition, can be configured to only affect some specific PCBA, (rather than all) PCBA or each PCBA is processed separately partly from the instruction of computing machine (40).Such in the situation that, computing machine (40), be perhaps that central database server will be managed all PCBA in described mode.

Figure 21 has described the handling procedure of central database server (30) and function thereof.It carries out long-range connection by computing machine (40) with the USB memory storage (MLUD) (90) of sandwich construction.This long-range connection can be passed through Internet protocol TCP/IP or other means of communication of standard.For the PCBA(400 that has code generator chip (13)), PCBA(900) etc., code generator chip (13) can produce one by central database server (30) differentiate unique code.This unique code can be common sequence number; Or if code generator (13) and network savvy, this unique code is the code of MAC/IP address style.This code generator (13) also can storage center database server (30) IP address, if available, it can trigger with central database server (30) and communicate by TCP/IP.

According to the difference of design, the code that code generator (13) produces has several functions.This code is used for differentiating MLUD.It is stored in the USB controller (12) and code generator (13) of MLUD.In the time that user attempts to access the data in flash memories (15), first USB controller (12) will require this code to the mechanism of data access of MLUD.And as an option, code generator (13) also can do rechecking.If the code of input is different from the code of depositing in USB controller (12), this access will be rejected.If the code of input is correct, USB controller (12) can also require code generator (13) to test again.If the feedback of code generator (13) is correct, user just can visit data.The concept of this duplication check can strengthen the security of MLUD.And the concept of this code can be for other function, long-range, wireless data access as shown in figure 20, the access rule management of memory storage comprises copy license, printing license, e-mail license, locking, deletion etc.If this code is different, this management options can configure separately by the USB memory storage (MLUD) of each sandwich construction.

Should understand code that code generator (13) produces and play the part of important function differentiating in the access of the mandate described in Figure 21 and data communication.This code is left in USB controller (12), rather than in flash memories (15), be very important, can prevent that so unauthorized user from walking around controller (12) and directly obtaining this code by flash memories (15).This also prevents that unauthorized user from directly taking off flash memories (15) and it is welded under another USB control chip with visit data because flash memories only with could normal work under the controller of identical code.USB controller (12) can allow to verify its identity before user accesses data like this.

Each has the PCBA(400 of code generator (13)) and PCBA(900) etc. can generate their unique codes separately.Like this, each PCBA(400) and PCBA(900) etc. can configure its unique access rule separately.For example, PCBA(400) can be configured to allow to print, do not allow to copy, also do not allow to transfer by telegram.Again for example, PCBA(900) can be configured to allow printing, allow copy, also allow e-mail.This also can be convenient to be managed by the central database server shown in Figure 22 (30).In addition, as an option, PCBA(400) and PCBA(900) etc. can, with identical code, can manage according to identical rule.

Having confirmed between the USB memory storage (MLUD) of sandwich construction and central database server (30) that, after identity authentication, central database server (30) just can remotely be managed the USB memory storage (MLUD) of sandwich construction.The function of central database server (30) is included in upload/download, remote lock, deletion and recovery between USB memory storage (MLUD) and the central database server (30) of sandwich construction etc.This also can comprise with the authorized user of the USB memory storage (MLUD) of sandwich construction and carries out safety communication.Figure 21 has illustrated its data flow.

Figure 23 has illustrated the utility model to be applied to the example of the USB memory storage of other type, for example RAM (random access memory) card, safe digital card (SD), Miniature safety digital card (micro SD), small-sized safety digital card (miniSD), multimedia card (MMC), miniature multimedia card (MMC micro), memory stick (MS and MS DUO), compact flash (CF), personal computer memory interface card (PCMCIA), most distinguished digital photograph card (xD) etc.The safe digital card of a sandwich construction can have multiple safe digital module PCBA(1000), they can have different separately security functions.A portable USB memory storage can be made up of multiple hard disks (1100), and by control module (1200), they can have the different security function of work.Control module (1200) can comprise USB control chip (12) with security function, not the USB control chip (11) with security function, code generator chip (13), usb hub chip (14) etc.If necessary, can also increase other security function chip, for example fingerprint recognition chip.

Comprehensive the above, these specific embodiment of the present utility model as described herein are just for illustrative purposes.Only have the aim and the scope that do not depart from this explanation, also have other various possible embodiment schemes.Various PCBA described in Fig. 1 to Fig. 9 can be combined into the USB memory storage (MLUD) of a series of sandwich construction in many ways.In other embodiments, the various piece in above-described embodiment of the present utility model can be in addition in conjunction with or remove.And the advantage relevant to some embodiment of the present utility model is illustrated in corresponding embodiment, other embodiment also can have same advantage.Other embodiment does not need to show same advantage to can be included into scope of the present utility model.Therefore, the utility model is not limited to appended claim.

Claims (18)

1. the USB memory storage of sandwich construction, is characterized in that:

A. at least two printed circuit-board assemblies, every a slice comprises:

I. the storer of storage data;

Ii. the controller of the flow process of the data access in a control store;

Wherein, these printed circuit-board assemblies are connected mutually, in the time that user accesses and adjacent printed circuit-board assembly swap data; And, wherein have at least a controller to have security function, require user to specify the necessary safety inspection requirement that conducts interviews of the storer on the printed circuit-board assembly at this controller place;

B. a USB connector for connection device, it is only directly connected with a printed circuit-board assembly;

C. at least on a printed circuit-board assembly, there is a usb hub that a USB interface is expanded to and can connect multiple USB interface of multiple printed circuit-board assemblies and provide link information for the controller on these printed circuit-board assemblies;

D. one for encapsulating the opaque housing of printed circuit-board assembly, and this housing prevents that other printed circuit-board assembly except a USB connector from being seen.

2. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: the interconnective printed circuit-board assembly starting from USB connector, the safety requirements of accessing their storer progressively improves.

3. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: each layer of each printed circuit-board assembly representative is disclosed layer by layer, in the display window of current layer, user takes a predefined action could disclose lower one deck on computers.

4. according to the USB memory storage of sandwich construction claimed in claim 3, it is characterized in that: predefined action comprise mouse click icon, mouse click a predefined part in a picture or picture, according to a predefined pattern carry out repeatedly that an icon is clicked, touched to mouse, a predefined part in a picture repeatedly touching, show in touch screen according to a predefined pattern or a picture.

5. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: its housing printed circuit-board assembly inner with it closely cooperates.

6. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: it is made up of two printed circuit-board assemblies, first printed circuit-board assembly have a USB connector in case between computing machine and the controller of this slice printed circuit-board assembly swap data, second printed circuit-board assembly is configured to swap data between the controller of second printed circuit-board assembly and the controller of first printed circuit-board assembly, the access of the internal memory to first printed circuit-board assembly is without safety inspection, the access of the internal memory to second printed circuit-board assembly must be carried out safety inspection.

7. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: it is made up of three printed circuit-board assemblies, first printed circuit-board assembly have a USB connector in case between computing machine and the controller of this slice printed circuit-board assembly swap data, second printed circuit-board assembly is configured to swap data between the controller of second printed circuit-board assembly and the controller of first printed circuit-board assembly, the 3rd printed circuit-board assembly is configured to swap data between the controller of the 3rd printed circuit-board assembly and the controller of second printed circuit-board assembly, the memory pool of first printed circuit-board assembly is accessed without safety inspection, the access of the internal memory to second printed circuit-board assembly must be carried out safety inspection, the access of the internal memory to the 3rd printed circuit-board assembly also must be carried out safety inspection.

8. according to the USB memory storage of sandwich construction claimed in claim 7, it is characterized in that: the safety inspection of its 3rd printed circuit-board assembly requires to require high than the safety inspection of second printed circuit-board assembly.

9. according to the USB memory storage of sandwich construction claimed in claim 8, it is characterized in that: it is user name and password that the safety inspection of its second printed circuit-board assembly requires, and its 3rd printed circuit-board assembly more comprised a code generator, therefore the safety inspection of its 3rd printed circuit-board assembly has required also to comprise the code that the code of input and the generation of this code generator matches.

10. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: its each printed circuit-board assembly is coplanar in housing.

11. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: its each printed circuit-board assembly is that a slice is on another sheet.

12. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: be connected in the USB interface of the computing machine with screen, the content of each layer of each printed circuit-board assembly representative that user successfully accesses is presented at separately independently in window.

13. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: be connected in the USB interface of the computing machine with screen, only have the content of printed circuit-board assembly that user successfully accesses, ground floor to be presented on screen.

14. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: the security configuration of the controller of its each printed circuit-board assembly is identical.

15. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: the security configuration of the controller of its each printed circuit-board assembly is different.

16. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: its printed circuit-board assembly has the controller with security function, can generate in addition the code generator of random code, it also checks whether the code that user inputs matches with the code of its generation.

17. according to the USB memory storage of the sandwich construction described in claim 16, it is characterized in that:

A. code generator is the each unique random code of controller generation with security function in device;

B. the access of the internal memory of the printed circuit-board assembly to the controller with security function will be passed through this controller.

18. according to the USB memory storage of sandwich construction claimed in claim 1, it is characterized in that: its usb hub can be determined the DISPLAY ORDER of each layer printed circuit board component.

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