WO2005059755A1

WO2005059755A1 - A method of changing the functions or status of a removal storage device

Info

Publication number: WO2005059755A1
Application number: PCT/CN2004/001445
Authority: WO
Inventors: Zhanyuan Zhou; Longhe Yang
Original assignee: Netac Technology Co., Ltd.
Priority date: 2003-12-16
Filing date: 2004-12-14
Publication date: 2005-06-30
Also published as: CN1629977A; HK1079894A1; CN100478919C

Abstract

The present invention relates to a method of changing the functions or status of a removal storage device, specially to a method of changing the functions or status of a removal storage device without a mechanical switch. The method of changing the functions or status of a removal storage device of the invention includes following steps : setting firmware in the removal storage device ;writing particular files into the removal storage device ;setting the information of the particular files via the removal storage device ; the firmware through the information of the particular files, determining and executing the functions or status that the removal storage device are required to achieve The invention uses a method achieved by software to change the functions or status of a removal storage device and thus simplifies the conformation of the removal storage device,reduces the cost of manufacture.

Description

Method for changing function or state of mobile storage device TECHNICAL FIELD

The present invention relates to a method for changing the function or state of a mobile storage device, and more particularly to a method for changing the function or state of a mobile storage device without requiring a mechanical toggle switch. Background technique

With the development of information technology, data processing and storage have a close relationship with people's work and life, and mobile storage devices have become one of the important means of data storage and carrying due to their convenient and flexible characteristics. With the increasing requirements of people for mobile storage devices, various storage devices have emerged endlessly. From the early floppy disks to the currently used flash disks, CF cards, MMC cards, SM cards, SD cards, etc., the size of storage devices has become smaller and smaller. More and more functions are implemented, such as write protection, hiding, encryption, and multiple partitions. Among them, write protection exists as a basic function of mobile storage devices in various mobile storage devices. Earlier floppy disks used a mechanical toggle switch, and the drive detected the position of the write-protect switch through a mechanical device to achieve the function of write-protection. Although the current mobile storage device has a smaller size and more functions, the method of implementing write protection and other function selection is still similar to the earlier floppy disk, that is, it is achieved by flipping a similar mechanical switch. In this way, two or more switches appear in the storage device, which undoubtedly increases the design difficulty of the mold and the workload of the appearance design, thereby increasing the hardware cost. In addition, it takes up a large space on the PCB and becomes one of the bottlenecks affecting the miniaturization of the storage device. In addition, there are also defects such as single function selection and short service life. Summary of the invention

An object of the present invention is to provide a method for changing the function or state of a mobile storage device without moving a mechanical switch for the mobile storage device.

The object of the present invention is achieved by the following technical solutions: The method for changing the function or state of a mobile storage device according to the present invention includes the following steps: setting firmware in the mobile storage device; writing a specific file in the mobile storage device; By the mobile storage device Preparing the information of the specific file; the hardened soft disk judges and executes a function or state to be implemented by the mobile storage device through the information of the specific file.

Compared with the prior art, the present invention uses a soft implementation method to change the function or state of the mobile storage device, thereby eliminating the mechanical switch device commonly used in the industry, thereby achieving the effects of simplifying the structure, expanding functions, and reducing costs, and is easy to use flexible. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a file allocation table of a host computer operating system in a first embodiment of a method for changing the function or state of a mobile storage device according to the present invention.

Fig. 2 is a flowchart of the operation of the firmware in the mobile storage device in the first embodiment of the method for changing the function or state of the mobile storage device according to the present invention.

FIG. 3 is a flowchart of the operation of the firmware in the mobile storage device according to another embodiment of the method for changing the function or status of the mobile storage device according to the present invention. detailed description

A first embodiment of the method for changing the function or state of a mobile storage device of the present invention includes the following steps: setting firmware in the mobile storage device; writing a specific file to the mobile storage device; setting a property of the specific file The firmware determines and executes a function or state to be implemented by the mobile storage device through the specific file attribute.

The firmware includes various function implementation modules and a file query module. The function implementation modules include write protection, partitioning, encryption, and hiding function implementation modules. The file query module is used to query the specific file. Attributes.

Writing a specific file to a mobile storage device is to write the specific file to a fixed location of the mobile storage device through a mobile storage device formatting tool. The specific file may be various types of files, and the fixed file may also be The user writes by himself through the operating system, but writing the specific file to a fixed location by a formatting tool is more beneficial to querying the specific file.

Setting the attribute of the specific file includes: setting the attribute of the specific file through an operating system of a host computer connected to the mobile storage device. In this embodiment, a Windows 2000 operating system is used as an example for description, but it is not limited to this operating system. Files in the Windows 2000 operating system generally have "read-only", "hidden", "archive" and other attributes Sex. When setting the properties of the specific file, simply follow the operating procedure of the Windows 2000 operating system, that is, right-click to enter the file "Properties" setting window,

Select one or more of "Read-only", "Hide", "Archive" and other attributes. After the "determine" operation is performed on the setting of the specific file attribute, the attribute change of the specific file is reflected in the file system of the operating system. The file system in this embodiment is described by using FAT16 as an example, but not Limited to this file system. As shown in FIG. 1, FIG. 1 is a file allocation table of the FAT16 file system. The first column “offset” represents the offset address of the file storage, and the second column “0 ~ F” is the file information bit. The contents are represented by a 2-digit hexadecimal code. Now suppose that the offset address of the specific file is 9679E0, the file name is "0000.txt", and the attribute is "archive", then the file name "0000" of the specific file corresponds to the offset address of 9679E0, and the file information bit is 4-7 hexadecimal codes "20 20 20 20", its extension "TXT" corresponds to 3 hexadecimal codes "54 58 54" of file information bits 8-A, and its attribute "archive" corresponds The file information bit is a hexadecimal code "20" of B, and the hexadecimal code

The binary code corresponding to "20" is "xxlx xxxx"("X" is a bit that does not need to be judged), that is, the "archive" attribute identification bit is 1, and when the file attribute is "read-only", the corresponding binary code is "xxxx xxxl", that is, the "read-only" attribute flag is 1, when the file attribute is "hidden", the corresponding binary code is "xxxx xxlx", that is, the "hidden" attribute flag is 1, which shows that The three file attributes of "hidden", "read-only" and "archive" respectively correspond to three identification bits in the binary code of the information bits representing the file attributes in the file management table, and each flag bit has " 0 "and" 1 "states, the three flag ²³ may represent a combination of eight states i.e. files.

The firmware determining and executing a function or state to be implemented by the mobile storage device through the attributes of the specific file includes: When the mobile storage device is connected to a host computer or performs an operation, as shown in FIG. 2, The firmware first initializes the mobile storage device; then the file query module detects whether the specific file exists, and if it does not exist, the process ends, and if it does, the file allocation table detection of the operating system of the host computer is the same. The attribute of the specific file; and then determining the function or state to be implemented by the mobile storage device according to the attribute of the specific file; 8 functions or states may be set, and the functions or states may be, but not limited to, write protection , Hiding, encryption, partitioning, etc .; after that, the firmware calls a corresponding function implementation module according to the function or status of the mobile storage module. Taking the implementation of the "write protection" function of the mobile storage module as an example for description, a firmware is provided in the mobile storage device, and the firmware includes the file query module and various function implementation modules. The function implementation module includes various function implementation modules that implement write protection, hiding, encryption, and partitioning functions of the mobile storage device. Write a specific file to the removable storage device by using a formatting tool software. Connect the mobile storage module to the upper computer, and enter the upper computer operating system, which in this embodiment is the Windows 2000 operating system. Select the specific file, right-click the pop-up menu, and select "Properties" from the menu. Enter the file attribute setting box. The file attribute setting box displays three file attributes of "Read-only", "Hide" and "Archive". Use the mouse to select the "Read-only" attribute. The firmware is Query the attributes of the specific file through the file allocation table of the operating system, and call the "write protection" function module. The function module corresponding to each file attribute can be set in the firmware. In this example, for the convenience of users, the "read-only" attribute of the specific file directly corresponds to the "write protection" function of the mobile storage device. You can also set "Hide" or "Archive", that is, when the "Hide" or "Archive" flag in the file system is 1, the "write protection" function is called, and when "Read-only", " The "write protection" function is called when a combination of two or more of the "hidden" and "archived" attributes is invoked. To implement other functions of the mobile storage device, such as partitioning, encryption, and hiding, it is only necessary to change the attributes of the specific file as described above, and then the file query module of the firmware software passes the attributes of the specific file. Judge the function to be implemented by the mobile storage device, and call the corresponding function implementation module.

The specific file may also be written into a certain partition of the mobile storage device, so as to implement selection of a function or status of a certain partition of the mobile storage device.

Another embodiment of the method for changing the function or state of the mobile storage device of the present invention includes the following steps: setting firmware in the mobile storage device; writing a specific file to the mobile storage device; setting the content of the specific file; The firmware determines and executes a function or state to be implemented by the mobile storage device through the specific file content.

The firmware includes various function implementation modules and a file query module. The function implementation modules include write protection, partitioning, encryption, and hiding function implementation modules. The file query module is used to query the specific file. content.

Writing a specific file to the mobile storage device is written by a mobile storage device formatting tool, where the specific file may be various editable files. The reverting software also specifies the content, judgment, and execution of the functions or states to be implemented by the mobile storage device. As shown in FIG. 3, after the start, the firmware of the mobile storage device The mobile storage device is initialized. After the initialization, the firmware detects whether the specific file exists, if not, the process ends, and if it exists, queries the location of the specific file and reads the content of the specific file; then, Determine a function or state to be implemented by the mobile storage device according to the content of the specific file, the function or state includes, but is not limited to, write protection, hiding, encryption, and partitioning; and then, according to the function to be implemented by the mobile storage device Or state calls the corresponding function implementation module.

The host computer operating system described in the present invention may be any one of the windows series operating systems, such as windows 98, windows me, windows 2000, windows XP and subsequent windows operating systems, or other types of operating systems, such as MAC OSX, Unix, Linux and other operating systems. When the operating system of the host computer in the present invention is windows, the corresponding file system includes but is not limited to FAT12, VFAT, FAT16, FAT32, CDFS, NTFS. When the operating system of the host computer in the present invention is Linux, The file system includes, but is not limited to, EXT2, EXT3, JFS, NFS, RAMFS, RAMFS, HPFS, CRAMFS. The mobile storage device may be a flash disk, CF card, MMC card, SM card, SD card, etc., but is not limited to the above mobile Storage device; The functions or states implemented by the mobile storage device include, but are not limited to, write protection, hiding, encryption, and partitioning.

The above are only preferred embodiments of the present invention. It should be noted that, for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made. These improvements and retouches should also be made. It is regarded as the protection scope of the present invention.

Claims

Claim

1. A method for changing the function or state of a mobile storage device, comprising the steps of: setting firmware in the mobile storage device; writing a specific file in the mobile storage device; and attributes of the specific file Perform setting; the firmware determines and executes a function or state to be implemented by the mobile storage device through the attributes of the specific file.

2. The method for changing the function or status of a mobile storage device according to claim 1, wherein: writing a specific file to the mobile storage device is performed by a mobile storage device formatting tool.

3. The method for changing the function or status of a mobile storage device according to claim 1, wherein: writing a specific file to the mobile storage device can also be written by a user through an operating system.

4. The method for changing the function or status of a mobile storage device according to claim 1, wherein: the setting of the specific file attribute is implemented by a host computer operating system connected to the mobile storage device.

5. The method for changing the function or status of a mobile storage device according to claim 1, wherein: the firmware is to determine a function or a function to be implemented by the mobile storage device through a file system of the host computer operating system. status.

6. The method for changing the function or status of a mobile storage device according to claim 1, wherein: the firmware includes a plurality of function implementation modules and a file query module, and the firmware uses the function module to call Realize the function or state to be achieved by the mobile storage device.

7. The method for changing the function or status of a mobile storage device according to claim 1, wherein: the specific file can be written in a certain partition of the mobile storage device, and The firmware determines the attributes of the specific file and executes the functions or states to be achieved by the partition.

8. A method for changing the function or state of a mobile storage device, comprising the steps of: setting firmware in the mobile storage device; writing a specific file in the mobile storage device; and content of the specific file Performing modification setting; the firmware determines and executes a function or a state to be implemented by the mobile storage device based on the content of the specific file.

9. The method for changing the function or status of a mobile storage device according to claim 8, characterized in that: the modification setting of the content of the specific file is completed by an operating system of a host computer connected to the mobile storage device.

10. A method for changing the function or status of a mobile storage device, comprising the steps of: setting firmware in the mobile storage device; writing a specific file in the mobile storage device; The host computer operating system sets the information of the specific file; the firmware determines and executes the function or status to be implemented by the mobile storage device by using the information of the specific file.