CN100371915C - Portable storage device and data access method thereof - Google Patents

Abstract

The invention is a portable storage device and its data access method, it is mainly to couple a computer with user's authority control operating system through the preset interface with a control unit, and the memory body of the storage device is divided into areas I, II, III, store the relevant application program in the area I, and the area II is a public area for storing each instruction and data temporarily, the area III is a hidden area for storing the customer data, when the data to be stored in the area III or the customer data to be read from the area III outside, the data to be accessed can be stored temporarily in the area II, and the special read-write instruction with read/write level application interface added in the application program of the area I is written into the area II and executed, so that the data stored temporarily in the area II can be further written into the area III or read by the outside, so as to complete the data exchange and access operation with the outside.

Description

Portable storage device and its data access method

technical field

The present invention relates to a portable storage device and a data access method thereof, in particular to a portable storage device and a data access method applicable to logging in with a general user account with authority control (such as: Windows ^TM 2000, Windows ^TM NT, Windows ^TM XP or Windows TM). ^TM 2003) Portable storage device and method for accessing data in operating system.

Background technique

With the development of the Internet, various Internet browsing software are constantly being introduced. Among them, Microsoft ^TM Windows ^TM System is a relatively popular operating system with the highest market share at present. However, because the backdoor program of this operating system has not been completely removed In addition, it has become a medium of hacker intrusion, and various derivative problems such as virus intrusion and spam mail continue, so that the information management personnel of general companies must spend a lot of energy and time on computer management; in order to solve the above The problem is that it is a feasible and common way to use the account to control the access rights of data, and in Microsoft's operating system, Windows ^TM 2000, Windows ^TM NT, Windows ^TM XP and Windows ^TM 2003 all have the above-mentioned use The operating system with or permission control function.

However, due to the popularity of portable flash storage devices, there are some unexpected issues, such as: when the user installs the drive device of the portable flash storage device on a device with user authority via the USB interface In the regulated operating system, the application of the device may need to use an application program in an "application programming interface (API; Application Programming Interface)" (in the above-mentioned Microsoft Windows operating system, it is called "small computer System interface application programming interface (SCSI API)"), however, the function of the application programming interface can only be used when logging in at the administrator level. Therefore, in the above operating environment, users who log in at the general user level The operator cannot fully drive the device normally; at the same time, for different windows operating systems, the relevant portable flash storage devices do not operate in a single mode, which also causes inconvenience in use.

Considering that conventional portable flash storage devices have the above-mentioned application deficiencies in operating systems with user rights control, the inventors have studied and improved ways to address these shortcomings, and finally the present invention has been produced.

Contents of the invention

The present invention aims to provide a portable storage device and its data access method, which mainly divides the memory body of the storage device into areas I, II, and III, wherein the area I is used to store related application programs, and the area II is a public area for temporary storage of various instructions and data, and the area III is a hidden area for saving customer data, so that the externally input data or customer data to be read in area III can be temporarily stored in the In the area II, at the same time, the special read and write instructions with the read/write layer application interface added in the application program of the area I are written into the area II and executed, thereby enabling the portable storage device to communicate with external device users It is the main purpose of the present invention that the computer with the authority control operating system performs data exchange and access operations.

The present invention further provides a portable storage device, which is characterized in that the portable storage device at least includes: a control unit that can be coupled with a computer via a preset interface; an area I for storing related applications program; an area II is a public area for temporary storage of various instructions and data, and the data in each data file in this area can be read or stored arbitrarily; an area III is a hidden area for storing customer data ; It is characterized in that: the reading and writing of data in the area III is achieved by temporarily storing the data in the area II and executing special reading and writing instructions with a read/write layer application interface attached in the application program. for external reading or writing of Region III.

Description of drawings

Fig. 1 is a schematic structural diagram of a portable storage device related to the present invention;

Fig. 2 is the overall flow chart of the present invention.

Symbol Description:

101...executing application

103...Is it Windows ^TM 2000, Windows ^TM NT, Windows ^TM XP or Windows ^TM 2003 operating system?

105...Directly use SCSI hard disk level commands to access the data in this area III

107...Are you logged in with the "User" account?

109...Read data in area III?

111...Write the read instruction to the instruction file in area II

113...Execute the reading action according to the instruction of the area II instruction file, and move the data in the area III to the data file in the area II

115...The application reads data from the data file in area II

117...Write data to area III?

119...Write commands to command files in region II and move foreign data to data files in region II

121...Execute special writing behavior according to the instructions of the area II instruction file

123...Application reads data from data file and writes to area III

2..Portable data storage device

21..Control unit

22..Area I

23....Area II

24...Area III

3....Computer

31....processing unit

Detailed ways

As for the detailed structure of the present invention, application principle, function and effect, then can obtain complete understanding with reference to the explanation that is done according to accompanying drawing:

Fig. 1 is a schematic diagram of the structure of a portable storage device related to the present invention. It can be clearly seen from this figure that the portable data storage device 2 of the present invention mainly includes: a control unit 21 and an area divided by a memory body I 22, area II 23, area III 24, wherein the control unit 21 can be coupled with a corresponding processing unit 31 in a computer 3 via a preset (such as: USB) interface, so as to make the computer 3 and the portable The data storage device 2 can be connected to perform actions such as reading and writing, and the area I 22 is for storing related application programs, and the area II 23 is a public area for temporarily storing each instruction file and data file. The data in each data file in this area can be read or stored arbitrarily, and area III 24 is a hidden area for saving customer data, and the data in this area cannot be read or stored arbitrarily.

Fig. 2 is the whole flow chart of the present invention, and it is to cooperate the structure of aforementioned portable data storage device 2, as can be seen from this icon, the operating method of the present invention is mainly to make portable data storage device 2 and computer at "beginning" After the processing unit 31 of 3 is connected, with a step 101 of "executing the application program", the application (driver) program stored in the area 122 is installed (SET UP) in the computer 3, and through a "whether it is Windows ^TM 2000, Windows ^TM NT, Windows ^TM XP or Windows ^TM 2003 operating system?” Judging step 103, confirm whether it is an operating system with user authority control such as Windows 2000, Windows ^TM NT, Windows ^TM XP or Windows ^TM 2003 , if the judgment result is negative N, it means that there is no problem of hierarchical control of user rights, therefore, by a step 105 of "directly accessing the data in the area III with SCSI hard disk level instructions", so that the computer 3 can directly access The customer data in the hidden area III, and if the judgment result is positive Y, it means that there is a hierarchical control of user authority, and then through a "do you log in with the 'user'account?" judgment step 107 to confirm its The identity of the operator, if the judgment result is negative N, it means that it is logged in at the "administrator" (Administrator) level. At this time, repeat the step 105 of "directly accessing the data in this area III with SCSI hard disk level commands". The result is positive Y, indicating that it is logged in with the "user" account, and the SCSI hard disk level command cannot be used. At this time, through a "read the data in the area III?" judgment step 109, if it is positive Y, then confirm the operation. If the user wants to read customer data in the hidden area III, then through a step 111 of "writing the read instruction to the instruction file in the area II", cooperate with a "reading according to the instruction of the area II instruction file", and write the area The data in the III is moved to the data file in the area II" step 113, the application program in the area I 22 will have the special read instruction loading in the instruction file in the area II with the application program of the read/write level application interface, and then by The body checks and executes the instructions of the command file in the area II, so as to move the customer data in the area III to the data file in the area II. Finally, an "application program reads data from the data file in the area II" step 115, Make this computer 3 read this customer data in the data file of area II 23 (common area); If this " read the data in area III? Area III?" Judgment step 117, if it is positive Y, then through a "command file written in the area II by the write instruction, and the data file of the external data is moved to the area II" step 119, cooperate with a "according to the area The instruction of II instruction file executes special writing behavior" step 121, the application program in this area I 22 will have the special write instruction load in the instruction file in area II with the application program of read/write level application interface, simultaneously will be by this computer 3 The input external data is temporarily stored in the data file in area II, and then the firmware checks and executes the instructions in the command file in area II. Finally, a step of "the application program reads data from the data file and writes it into area III" 123, to write the foreign data in the area II data file into the hidden area III.

By means of the above-mentioned implementation process, the data access actions when the portable storage device logs in to the operating system with user authority control with the general "user" account can be effectively executed, which is indeed convenient for use.

Claims (8)

1. the data access method of a portable memory device, it comprises at least:

One " executive utility " step will be stored in application program default in the portable memory device area I, and promptly driver is installed in computing machine, and portable memory device is connected with computing machine;

One " decision operation system " step judges whether that operating system is present in computing machine in order to have the operating system of user's authority control;

One " logining with ' user ' number of the account? " step is when having the control of user's authority classification in above-mentioned judged result, judges the identity of confirming the operator again;

One " directly with the data in the high-level instruction accessing area I II " step, when above-mentioned judged result is the operating system of no user's authority classification control, or the operator is when logining with supvr's number of the account level, but then described computing machine direct access predeterminable area, i.e. customer data in the area I II;

One " reading command is write among the regional II " step, the special reading command that will be had read/write level application interface by application program is loaded among the area I I;

Reading command among this area I I is looked into and carried out to one " carry out read behavior according to the instruction of area I I, the data among the area I II are moved among the area I I " step by a piece of wood serving as a brake to halt a carriage health check-up, moves among the area I I with the customer data that this area I II is stored;

One " application program is from area I I reading of data " step exports computing machine to the customer data with this area I I;

One " will write instruction writes among the regional II; and external data moved to area I I " and step, the special instruction load that writes that will have read/write level application interface by application program will be temporary in the area I I by the external data of computing machine input in area I I simultaneously;

One " carrying out the special behavior that writes according to the instruction of area I I " step is write among the regional III with the external data with this area I I by firmware inspection and the instruction carried out among this area I I.

2. the data access method of portable memory device according to claim 1, wherein this high-level instruction is the instruction of SCSI hard disk level.

3. the data access method of portable memory device according to claim 1 and 2, wherein this to read or write instruction be to be written in the command file of area I I.

4. the data access method of portable memory device according to claim 1 and 2, wherein these data of desiring to read or be written into are to be temporary in the data file of area I I.

5. the data access method of portable memory device according to claim 3, wherein these data of desiring to read or be written into are to be temporary in the data file of area I I.

6. the data access method of portable memory device according to claim 1, wherein this operating system is to comprise following any operating system: Windows ^TM2000, Windows ^TMNT, Windows ^TMXP and Windows ^TM2003.

7. portable memory device is characterized in that described portable memory device comprises at least:

One control module can be coupled via a preset interface and a computing machine;

One area I is for storing relevant application program;

One area I I is a public area for temporary each instruction and data, and the data in this each data file of zone all can be read arbitrarily or store;

One area I II is a hidden area for the preservation customer data;

It is characterized in that: data write in this area I II is by these data are temporary in the area I I, and carries out the special read write command with read/write level application interface additional in this application program that the side must think that external read gets or write regional III.

8. portable memory device according to claim 7 is characterized in that: the interface of this linking computing machine is a USB interface.

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