CN112699072A - Data transmission method, device and system - Google Patents
Data transmission method, device and system Download PDFInfo
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- CN112699072A CN112699072A CN202011547102.7A CN202011547102A CN112699072A CN 112699072 A CN112699072 A CN 112699072A CN 202011547102 A CN202011547102 A CN 202011547102A CN 112699072 A CN112699072 A CN 112699072A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4081—Live connection to bus, e.g. hot-plugging
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Abstract
The invention discloses a data transmission method, a device and a system, which relate to the field of electrical equipment, electrical engineering and communication, and the method comprises the following steps: the expansion device detects whether the USB storage equipment is accessed in real time; the expansion device acquires the currently specified data transmission speed after detecting that the USB storage equipment is accessed; and the expansion device transmits the currently specified data transmission speed to a data unidirectional lead-in device built in a special computer connected with the expansion device, so that the data unidirectional lead-in device transmits the data to be transmitted in the USB storage equipment to the special computer through the expansion device according to the currently specified data transmission speed. The invention can adjust the transmission speed of the data one-way leading-in device based on optical fiber communication, so that the data transmission is more accurate and stable.
Description
Technical Field
The invention relates to the field of electrical equipment, electrical engineering and communication, in particular to a data transmission method, device and system.
Background
Under the background of information technology application innovation, a special computer (including a portable computer and an all-in-one machine) is provided with a data one-way importing device based on optical fiber communication, and the problem of data reading of USB interface storage equipment (or USB storage equipment) is solved.
The data one-way leading-in device based on optical fiber communication utilizes the one-way characteristic of optic fibre to communicate, and the device is inside to be divided into transmitting terminal and receiving terminal, and transmitting terminal and receiving terminal pass through optic fibre and link to each other, reads the data of USB interface storage device at the transmitting terminal through the female mouth of USB, and the analysis is divided into a plurality of data packets according to self-defined agreement, and the data packet is transmitted to the receiving terminal through optic fibre, and the receiving terminal communicates with the computer through the public mouth of USB, finally leads in the data of USB interface storage device to the computer.
The existing data one-way importing device based on optical fiber communication has the following defects: with the configuration of the existing computer and server, packet loss or error transmission occurs when high-speed transmission is performed according to the USB3.0 specification.
Disclosure of Invention
The data transmission method, the device and the system provided by the embodiment of the invention solve the problem that the data transmission speed cannot be adjusted when data is imported in a single direction.
The embodiment of the invention provides a data transmission method, which comprises the following steps: the expansion device detects whether the USB storage equipment is accessed in real time; the expansion device acquires the currently specified data transmission speed after detecting that the USB storage equipment is accessed; and the expansion device transmits the currently specified data transmission speed to a data unidirectional lead-in device built in a special computer connected with the expansion device, so that the data unidirectional lead-in device transmits the data to be transmitted in the USB storage equipment to the special computer through the expansion device according to the currently specified data transmission speed.
Preferably, the obtaining, by the extension apparatus, the currently specified data transmission speed after detecting that the USB storage device has been accessed includes: the expansion device acquires first key information after detecting that the USB storage equipment is accessed, and obtains the currently specified data transmission speed by analyzing the first key information; wherein the currently designated data transmission speed is a default data transmission speed, or an original data transmission speed maintained when the data received by the special computer is correct, or a new data transmission speed whose speed is greater than the original data transmission speed, or a new data transmission speed whose speed is less than the original data transmission speed when the data received by the special computer is incorrect.
Preferably, the method further comprises: and the expansion device acquires second key information after detecting that the USB storage equipment is accessed, determines that the data transmission mode is a default transmission mode or an autonomous transmission mode by analyzing the second key information, and transmits the determined information of the data transmission mode to the data one-way importing device.
Preferably, when the data transmission mode is a default transmission mode, the data to be transmitted includes full disk data or specific directory data in the USB storage device, and the data unidirectional importing apparatus transmits the data to be transmitted in the USB storage device to the special computer via the extension apparatus according to the currently specified data transmission speed includes: the data one-way leading-in device reads the full disk data or the specific directory data in the USB storage equipment through the expansion device and transmits the full disk data or the specific directory data to the special computer according to the currently specified data transmission speed.
Preferably, when the data transmission mode is an autonomous transmission mode, the data to be transmitted includes data in a file or folder selected by a user on the expansion device, and the data unidirectional importing device transmits the data to be transmitted in the USB storage device to the special computer via the expansion device according to the currently specified data transmission speed includes: the data unidirectional leading-in device reads the directory structure of the USB storage equipment through the expansion device and displays the directory structure on the special computer, so that a user can select a file or a folder on the expansion device based on the displayed directory structure; and the data unidirectional leading-in device receives the information of the file or the folder transmitted by the expansion device and transmits the data of the file or the folder to the special computer according to the currently specified data transmission speed.
An embodiment of the present invention provides a data transmission apparatus, where the apparatus includes: a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the aforementioned data transmission method.
An embodiment of the present invention provides a data transmission system, which is characterized in that the system includes: a USB storage device; the expansion device is used for detecting whether the USB storage equipment is accessed in real time, acquiring currently specified data transmission speed information after the USB storage equipment is detected to be accessed, and transmitting the currently specified data transmission speed to a data one-way lead-in device which is arranged in a special computer and connected with the expansion device; and the data unidirectional leading-in device is used for transmitting the data to be transmitted in the USB storage equipment to the special computer through the expansion device according to the currently specified data transmission speed.
Preferably, the extension device is specifically configured to, after it is detected that the device has accessed the USB storage device, obtain first key information, and obtain the currently specified data transmission speed by analyzing the first key information, where the currently specified data transmission speed is a default data transmission speed, or an original data transmission speed or a new data transmission speed whose speed is greater than the original data transmission speed that is maintained when data received by the special-purpose computer is correct, or a new data transmission speed whose speed is less than the original data transmission speed when data received by the special-purpose computer is incorrect.
Preferably, the extension device is further configured to, after detecting that the USB storage device has been accessed, acquire second key information, determine that a data transmission mode is a default transmission mode or an autonomous transmission mode by analyzing the second key information, and transmit information of the determined data transmission mode to the data unidirectional importing device.
Preferably, when the data transmission mode is a default transmission mode, the data to be transmitted includes full disk data or specific directory data in the USB storage device, and the data unidirectional importing apparatus is specifically configured to read the full disk data or the specific directory data in the USB storage device via the expansion apparatus, and transmit the full disk data or the specific directory data to the special computer according to the currently specified data transmission speed; or, when the data transmission mode is the autonomous transmission mode, the data to be transmitted includes data in a file or a folder selected by a user on the expansion device, and the data unidirectional importing device is specifically configured to read a directory structure of the USB storage device via the expansion device, and display the directory structure on the special computer, so that the user selects the file or the folder on the expansion device based on the displayed directory structure, then receive information of the file or the folder transmitted by the expansion device, and transmit the data of the file or the folder to the special computer according to the currently specified data transmission speed.
In the embodiment of the invention, the expansion device is connected with the USB storage equipment and the data unidirectional leading-in device based on optical fiber communication and arranged in the special computer, so that the data transmission speed of the data unidirectional leading-in device can be adjusted through the expansion device, and the data transmission is more accurate and stable.
Drawings
Fig. 1 is a schematic flow chart of a data unidirectional importing method provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a data unidirectional importing system according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating an expansion device structure and connection of a data unidirectional importing system according to an embodiment of the present invention;
FIG. 4 is a flow chart of a first process of the system shown in FIG. 3;
fig. 5 is a flow chart of a second process of the system shown in fig. 3.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described below are only for the purpose of illustrating and explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 is a schematic flow chart of a data unidirectional importing method provided by an embodiment of the present invention, and as shown in fig. 1, the method may include:
step S101: the expansion device detects whether the USB storage equipment is accessed in real time.
Step S102: and the expansion device acquires the currently specified data transmission speed after detecting that the USB storage equipment is accessed.
Specifically, the step S102 may include: and the expansion device acquires first key information after detecting that the USB storage equipment is accessed, and obtains the currently specified data transmission speed by analyzing the first key information.
Step S103: and the expansion device transmits the currently specified data transmission speed to a data unidirectional lead-in device built in a special computer connected with the expansion device, so that the data unidirectional lead-in device transmits the data to be transmitted in the USB storage equipment to the special computer through the expansion device according to the currently specified data transmission speed.
The currently designated data transmission speed is a default data transmission speed, or an original data transmission speed maintained when the data received by the special computer is correct, or a new data transmission speed with a speed greater than the original data transmission speed, or a new data transmission speed with a speed less than the original data transmission speed when the data received by the special computer is wrong.
That is, the data transmission speed can be set by the keyboard of the extension device, for example, when data transmission is started, a moderate data transmission speed can be set, along with the data transmission, if the data can be correctly received and displayed on the special computer, the data transmission is correct, the data transmission speed can be maintained or increased, and if the data cannot be correctly received and displayed on the special computer, the data transmission has the problem of packet loss or error transmission, at this time, the data transmission speed can be reduced.
And after receiving the currently specified data transmission speed, the data unidirectional lead-in device regulates the speed of data transmission to the special computer according to the received currently specified data transmission speed. In one embodiment, the data unidirectional leading-in device may include a data encoder, an optical transmitter, an optical receiver and a data decoder connected in sequence, and the data unidirectional leading-in device may adjust data of the USB storage device transmitted via the expansion device to be transmitted to the special computer at the currently specified data transmission speed by adjusting codec speeds of the data encoder and the data decoder inside the data unidirectional leading-in device. In another embodiment, the data unidirectional importing device may adjust the speed of data transmission to the special computer by adjusting the delay time, for example, by adding delay to reduce the speed.
According to the embodiment of the invention, the data transmission speed of the data unidirectional leading-in device is adjusted through the expansion device, so that the data can be transmitted quickly and accurately and stably.
Some one-way leading-in devices based on optical fiber communication are inserted into the USB storage device, and only files (or specific directory data) in a folder with a specified name can be transmitted or files (or data) of a full disk must be transmitted. Therefore, in the embodiment of the present invention, on the basis of the above embodiment, after the expansion device detects that the USB storage device has been accessed, second key information may be obtained, and by analyzing the second key information, it is determined that a data transmission mode is a default transmission mode or an autonomous transmission mode, and information of the determined data transmission mode is transmitted to the data unidirectional importing device.
Thus, when the data transmission mode is the default transmission mode, the data to be transmitted includes full disk data or specific directory data in the USB storage device, and at this time, the data unidirectional import apparatus reads the full disk data or the specific directory data in the USB storage device via the expansion apparatus, and transmits the full disk data or the specific directory data to the special computer according to the currently specified data transmission speed. Or, when the data transmission mode is the autonomous transmission mode, the data to be transmitted includes data in a file or a folder selected by a user on the expansion device, at this time, the data unidirectional importing device reads the directory structure of the USB storage device through the expansion device, and displays the directory structure on the special computer, so that the user selects the file or the folder on the expansion device based on the displayed directory structure, then receives information of the file or the folder selected by the user and transmitted by the expansion device, and transmits the data of the file or the folder to the special computer according to the currently specified data transmission speed.
Based on the method and the device, the user can independently select the files or folders to be transmitted for transmission, and the data transmission efficiency is improved.
Correspondingly, an embodiment of the present invention further provides a data transmission apparatus, where the apparatus includes: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the data transmission method described above.
The processor can adopt programmable chips such as FPGA, MCU, ARM and the like.
Correspondingly, an embodiment of the present invention further provides a data unidirectional importing system, as shown in the schematic structural diagram shown in fig. 2, where the system may include:
a USB storage device;
the expansion device is used for detecting whether the USB storage equipment is accessed in real time, acquiring currently specified data transmission speed information after the USB storage equipment is detected to be accessed, and transmitting the currently specified data transmission speed to a data one-way lead-in device which is arranged in a special computer and connected with the expansion device;
and the data unidirectional leading-in device is used for transmitting the data to be transmitted in the USB storage equipment to the special computer through the expansion device according to the currently specified data transmission speed.
The expansion device is specifically configured to, after detecting that the device has been connected to the USB storage device, obtain first key information, and obtain the currently specified data transmission speed by analyzing the first key information.
The currently designated data transmission speed is a default data transmission speed, or an original data transmission speed maintained when the data received by the special computer is correct, or a new data transmission speed with a speed greater than the original data transmission speed, or a new data transmission speed with a speed less than the original data transmission speed when the data received by the special computer is wrong.
That is to say, the expansion device is provided with a keyboard, and a user can set a data transmission speed through the keyboard provided by the expansion device, for example, when data transmission is just started, the user can set a moderate data transmission speed, along with the data transmission, if the data can be correctly received and displayed on the special computer, the data transmission is correct, the data transmission speed can be maintained or the data transmission speed can be increased, and if the data cannot be correctly received and displayed on the special computer, the data transmission has the problem of packet loss or error transmission, and at this time, the data transmission speed can be reduced. Therefore, the expansion device adjusts the data transmission speed of the data unidirectional leading-in device, so that the data can be transmitted quickly, and the data can be transmitted accurately and stably.
On the basis of the foregoing embodiment, the extension apparatus may be further configured to acquire second key information after detecting that the USB storage device has been accessed, determine that a data transmission mode is a default transmission mode or an autonomous transmission mode by analyzing the second key information, and transmit information of the determined data transmission mode to the data unidirectional importing apparatus. Thus, when the data transmission mode is a default transmission mode, the data to be transmitted includes full disk data or specific directory data in the USB storage device, and at this time, the data unidirectional import apparatus reads the full disk data or the specific directory data in the USB storage device via the expansion apparatus, and transmits the full disk data or the specific directory data to the special computer according to the currently specified data transmission speed; or, when the data transmission mode is the autonomous transmission mode, the data to be transmitted includes data in a file or a folder selected by a user on the expansion device, at this time, the data unidirectional importing device reads the directory structure of the USB storage device through the expansion device, and displays the directory structure on the special computer, so that the user selects the file or the folder on the expansion device based on the displayed directory structure, then receives information of the file or the folder selected by the user and transmitted by the expansion device, and transmits the data of the file or the folder to the special computer according to the currently specified data transmission speed. Based on the method and the device, the user can independently select the files or folders to be transmitted for transmission, and the data transmission efficiency is improved.
The present invention will be described in detail with reference to fig. 3 to 5.
Fig. 3 is a schematic diagram of an expansion device structure and connection of a data unidirectional importing system according to an embodiment of the present invention, and as shown in fig. 3, on the premise of not changing a hardware structure of a computer, an expansion device is designed for a data unidirectional importing device based on optical fiber communication according to an embodiment of the present invention, where the external shape includes 1 USB male connector, 1 USB female connector, and 1 keypad, and the expansion device is used to adjust and set a data transmission mode and a data transmission speed of the data unidirectional importing device based on optical fiber communication. Wherein:
the expansion device is provided with a USB male port, and is connected to a USB female port of a data one-way lead-in device based on optical fiber communication and arranged in the special computer through the USB male port for communication;
the expansion device is provided with a USB female port, and is connected with a USB storage device through the USB female port;
the expansion device is provided with a small keyboard, and mode selection and speed selection are carried out through keyboard operation; mode selection by keyboard operation includes: the USB storage device is connected with the data unidirectional lead-in device based on optical fiber communication, and the transmission function in the default mode is the same as the function of directly connecting the USB storage device with the built-in data unidirectional lead-in device based on optical fiber communication of the special computer; the speed selection is carried out through keyboard operation, the data transmission speed of the data one-way importing device based on optical fiber communication can be set, and under the condition that the computer configuration is low or the packet loss or the error transmission is easy to occur during the 3.0 high-speed transmission, the speed transmission can be reduced, so that the problem that the current USB interfaces configured on the computer or the server are generally the standard of USB3.0 and the packet loss or the error transmission occurs during the USB3.0 high-speed transmission is processed by the data one-way importing device based on the optical fiber communication is solved.
The expansion device is provided with an FPGA chip and embedded with a software program and is used for analyzing key information of the keyboard, reading structure information and files of the USB storage equipment, sending data to the data unidirectional lead-in device based on optical fiber communication and the like.
It should be noted that, besides the FPGA chip, the expansion device may also adopt a chip with a programmable function, such as an MCU and an ARM.
On the premise of not changing the hardware structure of the computer, the embodiment of the invention adopts an extension device, a USB female port of the extension device is connected with a USB storage device, a USB male port of the extension device is connected with a data one-way lead-in device, the relevant configuration operation is completed through a keyboard of the extension device, and the relevant configuration is analyzed and transmitted through an FPGA chip of the extension device. By adopting the expansion device, a user can freely select files or folders to upload to the special computer, and meanwhile, the data transmission speed can be adjusted by judging the configuration condition of the special computer, so that the accuracy of data transmission is ensured, and the working efficiency is improved.
FIG. 4 is a first process flow diagram of the system of FIG. 3, as shown in FIG. 4, which may include the steps of:
firstly, after the expansion device is connected with the USB storage equipment, the FPGA analyzes the key information of the user and confirms the speed of the user on the keyboard for selection or adjustment.
And secondly, the FPGA transmits the analyzed key value of the speed regulation to a data unidirectional lead-in device built in the special computer, and the data unidirectional lead-in device can modify the transmission speed according to the key value.
In general, a user may determine the configuration of the dedicated computer by "trial and error" and select or adjust the data transmission speed on the keyboard of the expansion device. The data transmission speed can be medium speed under default condition, if the file can be completely and correctly transmitted, the medium speed transmission can be considered to be kept or the data transmission speed can be increased by one level; if the file after transmission is found to be unopened due to packet loss, the data transmission speed can be reduced by one level, so as to avoid packet loss or error transmission caused by overhigh data transmission speed.
Fig. 5 is a second processing flow chart of the system shown in fig. 3, in which FPGA on the expansion device is embedded with parsing and processing software, when the USB storage device is accessed, key value information of the keyboard is parsed, mode selection and transmission speed are determined, and then the key value information is sent to the data unidirectional importing device configured by the special computer and based on optical fiber communication, as shown in fig. 5, the method may include the following steps:
the first step is as follows: the expansion device detects the accessed USB storage equipment in real time and acquires the data transmission mode and the data transmission speed set by the user through the keyboard.
After the expansion device is connected with the USB storage equipment, the FPGA analyzes the key information of the user, and confirms that the user selects a default mode or an autonomous mode and selects, confirms and cancels the speed.
And secondly, judging whether the data transmission mode is a default transmission mode, if so, carrying out full disk data transmission or specific directory file transmission according to the speed set by the keyboard, if not, reading the directory structure of the USB storage equipment according to the speed set by the keyboard, transmitting and displaying the directory structure on the special computer, and selecting files or folders for transmission by matching with the keyboard operation of a display and an expansion device of the special computer.
For the transmission mode, if the default mode is confirmed, the FPGA analyzes the key value transmitted by the default mode and transmits the key value to the data unidirectional import device, and the data unidirectional import device reads the data and transmits the data to the special computer; if the autonomous mode is confirmed, the FPGA analyzes the key value transmitted from the master mode and transmits the key value to the built-in data unidirectional lead-in device, the data unidirectional lead-in device automatically reads the directory structure and the file information and transmits the directory structure or the file information to the special computer, then the file or the folder needing to be transmitted is selected through the up, down, left and right keys of the expansion device, and finally the selected file or folder is transmitted to the special computer through the data unidirectional lead-in device after the autonomous mode is confirmed.
For speed selection, the FPGA analyzes a key value for speed selection or adjustment and transmits the key value to the built-in data unidirectional import device, and the data unidirectional import device adjusts the speed of data transmission according to the speed key value. For example, the FPGA sends a corresponding command to the data unidirectional ingress device according to a key value of the keyboard, and the data unidirectional ingress device modifies the transmission speed according to the speed key value.
Wherein, confirm and cancel: the key value analyzed by the FPGA is transmitted to the built-in data unidirectional lead-in device, and the data unidirectional lead-in device starts to transmit data. The cancelled key value analyzed by the FPGA is transmitted to the built-in data unidirectional lead-in device, and the data unidirectional lead-in device stops transmitting data.
By adopting the invention, a user can freely select files or folders to upload to the special computer, and meanwhile, the transmission speed is adjusted by judging the configuration of the special computer, so that the accuracy of data transmission is ensured, and the working efficiency is improved.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and various modifications can be made by those skilled in the art in light of the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (10)
1. A method of data transmission, the method comprising:
the expansion device detects whether the USB storage equipment is accessed in real time;
the expansion device acquires the currently specified data transmission speed after detecting that the USB storage equipment is accessed;
and the expansion device transmits the currently specified data transmission speed to a data unidirectional lead-in device built in a special computer connected with the expansion device, so that the data unidirectional lead-in device transmits the data to be transmitted in the USB storage equipment to the special computer through the expansion device according to the currently specified data transmission speed.
2. The method of claim 1, wherein the extension apparatus obtaining the currently specified data transfer speed after detecting that the USB storage device has been accessed comprises:
the expansion device acquires first key information after detecting that the USB storage equipment is accessed, and obtains the currently specified data transmission speed by analyzing the first key information;
wherein the currently designated data transmission speed is a default data transmission speed, or an original data transmission speed maintained when the data received by the special computer is correct, or a new data transmission speed whose speed is greater than the original data transmission speed, or a new data transmission speed whose speed is less than the original data transmission speed when the data received by the special computer is incorrect.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
and the expansion device acquires second key information after detecting that the USB storage equipment is accessed, determines that the data transmission mode is a default transmission mode or an autonomous transmission mode by analyzing the second key information, and transmits the determined information of the data transmission mode to the data one-way importing device.
4. The method according to claim 3, wherein when the data transmission mode is a default transmission mode, the data to be transmitted comprises full disk data or specific directory data in the USB storage device, and the data unidirectional importing apparatus transmits the data to be transmitted in the USB storage device to the special-purpose computer via the extension apparatus according to the currently specified data transmission speed comprises:
the data one-way leading-in device reads the full disk data or the specific directory data in the USB storage equipment through the expansion device and transmits the full disk data or the specific directory data to the special computer according to the currently specified data transmission speed.
5. The method according to claim 3, wherein when the data transmission mode is an autonomous transmission mode, the data to be transmitted comprises data in a file or folder selected by a user on the extension device, and the data unidirectional importing device transmits the data to be transmitted in the USB storage device to the special computer via the extension device according to the currently specified data transmission speed comprises:
the data unidirectional leading-in device reads the directory structure of the USB storage equipment through the expansion device and displays the directory structure on the special computer, so that a user can select a file or a folder on the expansion device based on the displayed directory structure;
and the data unidirectional leading-in device receives the information of the file or the folder transmitted by the expansion device and transmits the data of the file or the folder to the special computer according to the currently specified data transmission speed.
6. A data transmission apparatus, characterized in that the apparatus comprises: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the computer program realizes the steps of the data transmission method according to any one of claims 1 to 5 when executed by the processor.
7. A data transmission system, the system comprising:
a USB storage device;
the expansion device is used for detecting whether the USB storage equipment is accessed in real time, acquiring currently specified data transmission speed information after the USB storage equipment is detected to be accessed, and transmitting the currently specified data transmission speed to a data one-way lead-in device which is arranged in a special computer and connected with the expansion device;
and the data unidirectional leading-in device is used for transmitting the data to be transmitted in the USB storage equipment to the special computer through the expansion device according to the currently specified data transmission speed.
8. The system according to claim 7, wherein the extension device is specifically configured to, after it is detected that the device has accessed the USB storage device, obtain first key information, and obtain the currently specified data transmission speed by parsing the first key information, where the currently specified data transmission speed is a default data transmission speed, or an original data transmission speed or a new data transmission speed with a speed greater than the original data transmission speed that is maintained when the data received by the special purpose computer is correct, or a new data transmission speed with a speed less than the original data transmission speed when the data received by the special purpose computer is incorrect.
9. The system according to claim 6 or 7, wherein the extension device is further configured to, after detecting that the USB storage device has been accessed, obtain second key information, determine, by parsing the second key information, that a data transmission mode is a default transmission mode or an autonomous transmission mode, and transmit information of the determined data transmission mode to the data unidirectional importing device.
10. The system of claim 9,
when the data transmission mode is a default transmission mode, the data to be transmitted includes full disk data or specific directory data in the USB storage device, and the data unidirectional import apparatus is specifically configured to read the full disk data or the specific directory data in the USB storage device via the expansion apparatus, and transmit the full disk data or the specific directory data to the special computer according to the currently specified data transmission speed;
or, when the data transmission mode is the autonomous transmission mode, the data to be transmitted includes data in a file or a folder selected by a user on the expansion device, and the data unidirectional importing device is specifically configured to read a directory structure of the USB storage device via the expansion device, and display the directory structure on the special computer, so that the user selects the file or the folder on the expansion device based on the displayed directory structure, then receive information of the file or the folder transmitted by the expansion device, and transmit the data of the file or the folder to the special computer according to the currently specified data transmission speed.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398877A (en) * | 2008-11-18 | 2009-04-01 | 谢翔 | Data uploading extender card device embedded in computer |
| CN101504710A (en) * | 2009-03-26 | 2009-08-12 | 北京鼎普科技股份有限公司 | Method and equipment for security of intranet computer |
| CN101630993A (en) * | 2008-07-18 | 2010-01-20 | 深圳市维信联合科技有限公司 | Unidirectional transmission control method and unidirectional transmission system without feedback signal wire |
| CN203706193U (en) * | 2014-02-24 | 2014-07-09 | 成都必信安科技有限公司 | Liquid crystal touch screen based mobile memory device data one-way importing device |
| CN204290965U (en) * | 2014-12-31 | 2015-04-22 | 无锡艾德发科技有限公司 | A kind of gigabit optical interface USB connector |
| CN106375013A (en) * | 2016-09-22 | 2017-02-01 | 深圳市中锐源科技有限公司 | Non-feedback unidirectional data transmission device based on USB interface and transmission method |
-
2020
- 2020-12-24 CN CN202011547102.7A patent/CN112699072B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630993A (en) * | 2008-07-18 | 2010-01-20 | 深圳市维信联合科技有限公司 | Unidirectional transmission control method and unidirectional transmission system without feedback signal wire |
| CN101398877A (en) * | 2008-11-18 | 2009-04-01 | 谢翔 | Data uploading extender card device embedded in computer |
| CN101504710A (en) * | 2009-03-26 | 2009-08-12 | 北京鼎普科技股份有限公司 | Method and equipment for security of intranet computer |
| CN203706193U (en) * | 2014-02-24 | 2014-07-09 | 成都必信安科技有限公司 | Liquid crystal touch screen based mobile memory device data one-way importing device |
| CN204290965U (en) * | 2014-12-31 | 2015-04-22 | 无锡艾德发科技有限公司 | A kind of gigabit optical interface USB connector |
| CN106375013A (en) * | 2016-09-22 | 2017-02-01 | 深圳市中锐源科技有限公司 | Non-feedback unidirectional data transmission device based on USB interface and transmission method |
Non-Patent Citations (1)
| Title |
|---|
| 王海洋 等: "基于光纤的数据单向传输系统设计与实现", 《信息网络安全》, pages 107 - 109 * |
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