CN208172797U - USB flash disk isolator - Google Patents
USB flash disk isolator Download PDFInfo
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- CN208172797U CN208172797U CN201721890389.7U CN201721890389U CN208172797U CN 208172797 U CN208172797 U CN 208172797U CN 201721890389 U CN201721890389 U CN 201721890389U CN 208172797 U CN208172797 U CN 208172797U
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- usb
- flash disk
- usb flash
- host
- disk isolator
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Abstract
The utility model relates to computer fittings fields, disclose a kind of USB flash disk isolator.The USB flash disk isolator includes：Communication module is read and write, which includes：Usb interface module, for connecting USB device；And host interface module, for connecting host, and master controller, for reading the hardware id information of the USB device, and judge whether the hardware id information of the USB device of the reading is consistent with the hardware id information of any one of the USB device that allows to access the host, if the two is consistent, controls the USB device and identified by the host.The utility model can effectively filter USB device, to prevent the propagation of virus document.
Description
Technical field
The utility model relates to computer fittings fields, more particularly to a kind of USB flash disk isolator.
Background technique
With the continuous development of society, people are more and more frequent using the frequency of computer, and computer has become life
In indispensable tool.But the following network security problem also causes our enough attention.With popularizing for USB flash disk
With use, virus encroaches on the computer of user also with the movement of USB flash disk wantonly.The mechanism of USB flash disk transmitted virus is to rely on Microsoft's operation
The AutoPlay function of system Windows, so that computer user when double-clicking opening with virulent USB flash disk, understands automatic running
Virus and trojan horse program, and then computer system is polluted by invasion.
In order to preferably service taxpayer and service unit, the self-help terminal equipment of aerospace information has been reserved USB outward and has been connect
Mouthful, but pass through market survey and find that certain customers will be inserted into self-service terminal machine with virulent USB flash disk, cause terminating machine without
Phenomena such as method work, even loss data.
Therefore it how to be effectively prevent the propagation of virus document, it is extremely urgent to improve the safety of data.
Utility model content
The purpose of the utility model is to provide a kind of USB flash disk isolator, USB flash disk isolator configuration is simple, at low cost, low in energy consumption
And can detachably carry, USB device can effectively be filtered, to prevent the propagation of virus document.
To achieve the goals above, the utility model provides a kind of USB flash disk isolator, which includes：Read-write communication
Module, the read-write communication module include：Usb interface module, for connecting USB device；And host interface module, for connecting
Host and master controller for reading the hardware id information of the USB device, and judge the USB device of the reading
Hardware id information it is whether consistent with the hardware id information of any one of the USB device that allows to access the host, if the two
Unanimously, then the USB device is controlled to be identified by the host.
Preferably, which further includes：Switch control module, for controlling the Working mould of the USB flash disk isolator
Formula, the operating mode include typing mode and recognition mode；The master controller is used for：It is in described in the USB flash disk isolator
In the state of typing mode, control storage allows to access the hardware id information of the USB device of the host；And in the USB flash disk
Isolator is in the state of the recognition mode, according to the hardware id information of the USB device for allowing to access the host,
Control whether the USB device is identified by the host.
Preferably, the switch control module includes toggle switch.
Preferably, which further includes：Display module, for showing the operating mode of the USB flash disk isolator.
Preferably, the display module includes indicator light.
Preferably, which also includes memory module, and the master controller is used to allow to access the master for described
The hardware id information of the USB device of machine is stored to the memory module.
Preferably, which further includes reset key, for directly wiping the content in the memory module.
Preferably, at least one USB interface is arranged in the usb interface module.
Through the above technical solutions, the utility model creatively uses master controller according to the permission access host
The hardware id information of USB device, whether control USB device is identified by the host, to realize effective mistake to USB device
Filter, and then the propagation of virus document is prevented, improve the safety of data.
Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart for the USB flash disk isolator that a kind of embodiment of the utility model provides；And
Fig. 2 is the hardware block diagram for the USB flash disk isolator that a kind of embodiment of the utility model provides.
Description of symbols
1 read-write 2 master controller of communication module
4 flash memory, 5 single-chip microcontroller
7 toggle switch, 9 indicator light
10 reset key, 11 power module
12 usb 1,3 USB interface
100 usb interface module, 110 host interface module
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
Fig. 1 is the flow chart for the USB flash disk isolator that an embodiment of the present invention provides.As shown in Figure 1, the utility model mentions
The USB flash disk isolator of confession may include：Communication module 1 is read and write, which includes：Usb interface module 100, for connecting
USB device；And host interface module 110, for connecting host and master controller 2, for reading the USB device
Hardware id information, and judge the hardware id information of the USB device of the reading and allow to access the USB device of the host
Any one of hardware id information it is whether consistent, if the two is consistent, controls the USB device and identified by the host.Institute
State USB flash disk spacer structures it is simple, it is light it is small and exquisite, can detachably carry, is at low cost and low in energy consumption, pass through the master controller 2
According to the hardware id information of the USB device for allowing access host, control whether the USB device is identified by the host, from
And realize effective filtering to USB device, and then prevent the propagation of virus document, improve the safety of data.
USB flash disk isolator provided by the utility model may also include memory module 3, and the master controller 2 is used to permit described
Perhaps the hardware id information for accessing the USB device of the host is stored to the memory module 3.The memory module 3 may include dodging
Deposit (Flash), random access memory (RAM), serial-access storage (SAS), Double Data Rate synchronous DRAM
(DDR), semiconductor memory, magnetic surface storage and cache memory etc. are supplied due to Flash in no electric current
Under the conditions of also can muchly keep data, storage characteristics is equivalent to hard disk, in addition there are high speed, light and large buffer memory
The advantages that, therefore the utility model uses Flash.And Flash may include NandFlash and NorFlash, due to NorFlash
Have many advantages, such as that speed that is small in size, reading is fast and operation does not need any software support, therefore the utility model uses
One of the most common type Serial Peripheral Interface (SPI) type flash memory (Flash) 4 in NorFlash.SPI type Flash 4 makes
The USB flash disk isolator have many advantages, such as structure it is simple, it is light it is small and exquisite, can detachably carry and low in energy consumption.
The master controller 2 may include that single-chip microcontroller, microprocessor, Complex Programmable Logic Devices (CPLD), scene can compile
Journey gate array (FPGA) circuit, digital signal processor (DSP) etc., since single-chip microcontroller has result simple, at low cost, low in energy consumption
And the advantages such as memory capacity is expansible, therefore the utility model uses single-chip microcontroller, preferably uses M452LG6AE single-chip microcontroller 5.
USB flash disk isolator provided by the utility model may also include switch control module 6, for controlling the USB flash disk isolator
Operating mode, which includes typing mode and recognition mode.The switchgear module 6 may include toggle switch with
And program control switch etc., since toggle switch structure is simple and easily realizes, therefore the utility model uses toggle switch 7, this group
Code switch 7 can switch the operating mode of the USB flash disk isolator.When the toggle switch 7 the USB flash disk isolator is placed in it is described
When under typing mode, the master controller 2 controls the memory module 3 and stores the hard of the USB device for allowing to access the host
Part id information；When the USB flash disk isolator is placed under the recognition mode by the toggle switch 7, allow to access institute according to described
The hardware id information of the USB device of host is stated, the master controller 2 controls whether the USB device is identified by the host, real
Now to the filtering of the USB device.
USB flash disk isolator provided by the utility model may also include display module 8, for showing the work of the USB flash disk isolator
Operation mode.Display module 8 may include indicator light and display screen etc., and since indicating lamp structure is simple and small in size, therefore this is practical
It is novel to use indicator light 9.When the toggle switch 7 is allocated to the typing mode, the indicator light 9 responds and is shown as green
Color；When the toggle switch 7 is allocated to the recognition mode, the indicator light 9 is not responding to, once the USB device is described
Host identification, then the indicator light 9 responds and is shown as blue.Certainly, the utility model is not limited to above-mentioned indicator light with not
Show the different working modes of the USB flash disk isolator with color, other display modes, for example, using different indicator lights,
Show that the different working modes of the USB flash disk isolator can be also applicable in.
USB flash disk isolator provided by the utility model may also include reset key 10, for directly wiping the memory module 3
Interior content and power module 11, for providing power supply to each module.
Now explain that the utility model is provided by taking the SPI type Flash 4 and the M452LG6AE single-chip microcontroller 5 as an example
USB flash disk isolator equipment filter process.As shown in Fig. 2, the host port module of USB flash disk isolator one end with it is described
Host is connected, at least one USB interface is arranged in the usb interface module of the other end, and the utility model is arranged two USB and connects
Mouth, respectively usb 12 and usb 13, can be inserted into two USB devices simultaneously.The equipment of the USB flash disk isolator is filtered
Journey includes typing and two stages of identification, is described in detail separately below with regard to the two stages.
The typing stage of the USB flash disk isolator is as follows：The USB device for allowing to access the host for described is (such as golden
Tax disk, tax disc etc.) it is inserted into any one described USB interface.The USB flash disk isolator is placed in the typing by toggle switch 7
Mode, the at this time response of indicator light 9 are simultaneously shown in green.The USB flash disk isolator is first in the state of the typing mode
First, the M452LG6AE single-chip microcontroller 5 reads the hardware id information of the USB device for allowing to access the host, the hardware ID
Information may include supplier number and product number；Then, it is right to control the SPI type Flash 4 for the M452LG6AE single-chip microcontroller 5
The hardware id information of the USB device for allowing to access the host is stored；Repeat such step, if user by certain
For the hardware ID data input of USB device into the USB flash disk isolator, just representing the USB device is an equipment trusty, into
And the equipment can be identified in following cognitive phases by the host.
The cognitive phase of the USB flash disk isolator is as follows：USB device is inserted into any of the usb interface module 100 institute
USB interface is stated, and the USB flash disk isolator is placed in by the recognition mode by toggle switch 7, the indicator light 9 is not responding to.Institute
USB flash disk isolator is stated in the state of the recognition mode, firstly, the M452LG6AE single-chip microcontroller 5 reads the USB device
Hardware id information；Then, by the hardware id information of the USB device of the reading and described allow to access the host
The hardware id information of any one of USB device compares, if the two is consistent, the USB device will be by the master
Machine identification, the indicator light 9 responds and is shown as blue at this time；If the two is inconsistent, the USB device would not be by
The host identification, the indicator light 9 is not responding at this time.The present embodiment is using the M452LG6AE single-chip microcontroller as main control
Device, so that the structure of the USB flash disk isolator is simple, light small and exquisite, at low cost and low in energy consumption, the M452LG6AE single-chip microcontroller can
According to the hardware id information of the USB device for allowing access host, whether control USB device is identified by the host, thus
It realizes effective filtering to USB device, and then prevents the propagation of virus document, improve the safety of data.
When the hardware id information of the USB device for allowing access host needs to update, can be pressed by the reset
Key 10 directly wipes the hardware id information of the USB device for allowing to access the host stored in the SPI type Flash 4,
The space in the SPI type Flash 4 can be discharged, quickly and easily so as to the update and storage of data.
In conclusion the utility model creatively uses memory module to the USB device for allowing to access the host
Hardware id information is stored, using master controller according to the hardware id information of the USB device for allowing access host, control
Whether USB device is identified by the host, to realize effective filtering to USB device, and then prevents the propagation of virus document,
Improve the safety of data.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
Detail in above embodiment can be to the skill of the utility model in the range of the technology design of the utility model
Art scheme carries out a variety of simple variants, these simple variants belong to the protection scope of the utility model.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the utility model is to each
No further explanation will be given for the possible combination of kind.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed
The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.
Claims (8)
1. a kind of USB flash disk isolator, which is characterized in that the USB flash disk isolator includes：
Communication module is read and write, which includes：
Usb interface module, for connecting USB device；And
Host interface module, for connecting host, and
Master controller, for reading the hardware id information of the USB device, and judge the reading the USB device it is hard
Whether part id information is consistent with the hardware id information of any one of the USB device that allows to access the host, if the two is consistent,
The USB device is then controlled to be identified by the host.
2. USB flash disk isolator according to claim 1, which is characterized in that the USB flash disk isolator further includes：
Switch control module, for controlling the operating mode of the USB flash disk isolator, which includes typing mode and identification
Mode；
The master controller is used for：
In the state that the USB flash disk isolator is in the typing mode, control stores the USB for allowing to access the host
The hardware id information of equipment；And
In the state that the USB flash disk isolator is in the recognition mode, according to the USB device for allowing to access the host
Hardware id information, control whether the USB device is identified by the host.
3. USB flash disk isolator according to claim 2, which is characterized in that the switch control module includes toggle switch.
4. USB flash disk isolator according to claim 1, which is characterized in that the USB flash disk isolator further includes：Display module is used for
Show the operating mode of the USB flash disk isolator.
5. USB flash disk isolator according to claim 4, which is characterized in that the display module includes indicator light.
6. USB flash disk isolator according to claim 1, which is characterized in that the USB flash disk isolator also includes memory module,
The master controller is for storing the hardware id information of the USB device for allowing to access the host to the storage
Module.
7. USB flash disk isolator according to claim 6, which is characterized in that the USB flash disk isolator further includes reset key, is used for
Directly wipe the content in the memory module.
8. USB flash disk isolator according to claim 1, which is characterized in that at least one USB is arranged in the usb interface module
Interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721890389.7U CN208172797U (en) | 2017-12-28 | 2017-12-28 | USB flash disk isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721890389.7U CN208172797U (en) | 2017-12-28 | 2017-12-28 | USB flash disk isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208172797U true CN208172797U (en) | 2018-11-30 |
Family
ID=64387003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721890389.7U Active CN208172797U (en) | 2017-12-28 | 2017-12-28 | USB flash disk isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208172797U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111259436A (en) * | 2020-01-13 | 2020-06-09 | 山东浪潮商用系统有限公司 | Method for isolating macro virus by USB flash disk isolator |
| CN114943072A (en) * | 2022-07-25 | 2022-08-26 | 北京网藤科技有限公司 | Method and system for realizing USB flash disk linkage management and control among various software systems |
-
2017
- 2017-12-28 CN CN201721890389.7U patent/CN208172797U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111259436A (en) * | 2020-01-13 | 2020-06-09 | 山东浪潮商用系统有限公司 | Method for isolating macro virus by USB flash disk isolator |
| CN111259436B (en) * | 2020-01-13 | 2023-03-31 | 山东浪潮商用系统有限公司 | Method for isolating macro virus by USB flash disk isolator |
| CN114943072A (en) * | 2022-07-25 | 2022-08-26 | 北京网藤科技有限公司 | Method and system for realizing USB flash disk linkage management and control among various software systems |
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