CN112822277A - File transmission method, device and system - Google Patents
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- CN112822277A CN112822277A CN202110038690.XA CN202110038690A CN112822277A CN 112822277 A CN112822277 A CN 112822277A CN 202110038690 A CN202110038690 A CN 202110038690A CN 112822277 A CN112822277 A CN 112822277A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000003287 optical effect Effects 0.000 claims abstract description 80
- 238000012546 transfer Methods 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/565—Conversion or adaptation of application format or content
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Abstract
The application relates to a file transmission method, a device and a system, wherein the file transmission method comprises the steps of converting transmission file contents into file content optical signals; transmitting the file content optical signal according to a file transmission protocol; and receiving the file content optical signal, and analyzing the file content according to the file content optical signal. The file transmission method and the file transmission system have the advantages that one-to-one and one-to-many transmission of the file can be achieved through the visible light communication mode, the transmission mode is simple, maintenance is easy, the electric signal of the file is converted into the optical signal to be transmitted after encryption, and due to the fact that light is transmitted along a straight line, the signal cannot be received in places where light cannot irradiate, and file transmission safety can be improved.
Description
Technical Field
The application belongs to the technical field of file transmission, and particularly relates to a file transmission method, device and system.
Background
File transmission modes in companies and enterprises are mostly transmitted in modes of Email attachment transmission, U disk copy and the like, the transmission modes acquire file contents from the outside, the company is leaked, and if confidential files are leaked to competing companies, great loss is caused to the companies and the enterprises. In some security departments of companies, in order to prevent employees from taking company documents out, the companies are not allowed to use the network and the U disk to transfer the documents. Files are transmitted by a local area network built inside a company in a common mode, but the transmission mode needs to consume a large number of cables, maintenance cost is high, once a fault occurs, the local area network cannot be used, file transmission of the whole company is affected, and inconvenience is brought to enterprises of the company.
Disclosure of Invention
The file transmission method, the file transmission device and the file transmission system solve the problems that a large number of cables are consumed, maintenance cost is high, once a fault occurs, the local area network cannot be used, file transmission of the whole company is affected, and inconvenience is brought to enterprises of the company.
In a first aspect, the present application provides a file transmission method, including:
converting the content of the transmission file into a file content optical signal;
transmitting the file content optical signal according to a file transmission protocol;
and receiving the file content optical signal, and analyzing the file content according to the file content optical signal.
Further, the method also comprises the following steps:
digitally modulating the contents of the transmission file to convert the contents of the transmission file into a first file content digital electric signal;
and converting the first file content digital electric signal into a file content optical signal.
Further, the parsing the file content according to the file content optical signal includes:
converting the file content optical signal into a file content analog electric signal;
converting the file content analog electric signal into a second file content digital electric signal;
and demodulating the second file content digital electric signal to obtain the file content.
Further, the method also comprises the following steps:
distributing an ID number to each receiving end;
combining the transmission file content and the ID number of the receiving end, and converting the combination into an optical signal for transmission;
the receiving end analyzes the file content and the ID number of the receiving end;
matching the ID number of the receiving end with the ID number of the receiving end;
and if the matching is successful, saving the file content.
Further, the transmitting the file content optical signal according to a file transfer protocol includes:
before data transmission, the data transmission line is kept at a high level;
sending a clock period low level as an initial signal;
sending data according to a file number protocol;
and the data transmission is finished, and the high level of one clock period is kept as a stop signal.
Further, the file transfer protocol includes:
eight bits of data and three bits of signal check bits.
Further, the eight bits of data are Bit 0-Bit 7, the three bits of signal check bits are Bit 8-Bit 10, and the check mode includes:
Bit0+Bit1+Bit2+Bit3+Bit4+Bit5+Bit6+Bit7＝Bit8*2^2+Bit9*2^1+Bit10*2^0。
in a second aspect, the present application provides a file transfer device, comprising:
the conversion module is used for converting the content of the transmission file into a file content optical signal;
the transmission module is used for transmitting the file content optical signal according to a file transmission protocol;
and the analysis module is used for receiving the file content optical signal and analyzing the file content according to the file content optical signal.
In a third aspect, the present application provides a file transfer system, comprising:
the system comprises a sending end, a receiving end, an LED lamp and a photoelectric detector;
the transmitting end converts the content of the transmission file into a file content optical signal;
sending a file content optical signal through the LED lamp;
the photoelectric detector receives a file content optical signal;
and the receiving end analyzes the file content according to the file content optical signal.
Further, the transmitting end includes: an FPGA main controller; the receiving end includes: and the FPGA is controlled by the controller.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the file transmission method, the file transmission device and the file transmission system, the transmission file content is converted into the file content optical signal, the file content optical signal is transmitted according to the file transmission protocol, the file content optical signal is received, the file content is analyzed according to the file content optical signal, one-to-one and one-to-many transmission of files can be achieved in a visible light communication mode, the transmission mode is simple and easy to maintain, in addition, the electric signal of the file is converted into the optical signal to be transmitted after being encrypted, and the signal cannot be received in the place where the light cannot irradiate due to the fact that the light is transmitted along the straight line, and the file transmission safety can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a flowchart of a file transfer method according to an embodiment of the present application.
Fig. 2 is a flowchart of a file transfer method according to another embodiment of the present application.
Fig. 3 is a schematic diagram of a file transfer protocol according to an embodiment of the present application.
Fig. 4 is a flowchart of a file transfer method according to another embodiment of the present application.
Fig. 5 is a flowchart of another file transmission method according to an embodiment of the present application.
Fig. 6 is a functional structure diagram of a file transfer device according to an embodiment of the present application.
Fig. 7 is a functional structure diagram of a file transfer system according to an embodiment of the present application.
Fig. 8 is a functional block diagram of another file transfer system according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart of a file transfer method according to an embodiment of the present application, and as shown in fig. 1, the file transfer method includes:
s11: converting the content of the transmission file into a file content optical signal;
s12: transmitting the file content optical signal according to a file transmission protocol;
s13: and receiving the file content optical signal, and analyzing the file content according to the file content optical signal.
File transmission modes in companies and enterprises are mostly transmitted in modes of Email attachment transmission, U disk copy and the like, the transmission modes are obtained by the outside to cause company disclosure, and in order to prevent the disclosure, files are transmitted in a mode of commonly building a local area network in some companies.
In this embodiment, the content of the transmission file is converted into the optical signal of the content of the file, the optical signal of the content of the file is transmitted according to the file transmission protocol, the optical signal of the content of the file is received, the content of the file is analyzed according to the optical signal of the content of the file, one-to-one and one-to-many transmission of the file can be realized in a visible light communication mode, the transmission mode is simple and easy to maintain, the electric signal of the file is converted into the optical signal to be encrypted and then transmitted, and because the light is transmitted along a straight line, the signal cannot be received in a place where the light cannot reach, and the file transmission safety can be improved.
Fig. 2 is a flowchart of a file transfer method according to another embodiment of the present application, and as shown in fig. 2, the file transfer method includes:
s21: digitally modulating the contents of the transmission file to convert the contents of the transmission file into a first file content digital electric signal;
s22: converting the first file content digital electrical signal into a file content optical signal;
s23: transmitting the file content optical signal according to a file transmission protocol;
in some embodiments, transmitting the file content optical signal according to a file transfer protocol includes:
s231: before data transmission, the data transmission line is kept at a high level;
s232: sending a clock period low level as an initial signal;
s233: sending data according to a file number protocol;
s234: and the data transmission is finished, and the high level of one clock period is kept as a stop signal.
By restricting the file transmission process, the file transmission safety can be ensured.
In some embodiments, as shown in FIG. 3, the file transfer protocol includes:
eight bits of data and three bits of signal check bits.
Eight bits of data are Bit 0-Bit 7, three bits of signal check bits are Bit 8-Bit 10, and the check mode comprises the following steps:
Bit0+Bit1+Bit2+Bit3+Bit4+Bit5+Bit6+Bit7＝Bit8*2^2+Bit9*2^1+Bit10*2^0。
s24: receiving a file content optical signal, and converting the file content optical signal into a file content analog electrical signal;
s25: converting the file content analog electric signal into a second file content digital electric signal;
s26: and demodulating the second file content digital electric signal to obtain the file content.
In this embodiment, through carrying out digital modulation to the file content, the modulation signal sends out the signal of telecommunication with the form of light signal through the high-speed scintillation of control LED lamp, the receiving terminal receives the light signal, and convert the signal of telecommunication into the signal of telecommunication, convert the signal of telecommunication of simulation into digital signal through analog-to-digital conversion module, with digital signal demodulation back, read the file content, through using visible light communication's mode to transmit the file, utilize the fine secret problem of solution file transmission of the principle of light edge rectilinear propagation, and, carry out the check-up to transmission data through transmission protocol can further improve file transmission security.
Fig. 4 is a flowchart of a file transfer method according to another embodiment of the present application, and as shown in fig. 4, the file transfer method includes:
s41: distributing an ID number to each receiving end;
s42: combining the transmission file content and the ID number of the receiving end, and converting the combination into an optical signal for transmission;
s43: the receiving end analyzes the file content and the ID number of the receiving end;
s44: matching the ID number of the receiving end with the ID number of the receiving end;
s45: and if the matching is successful, saving the file content.
As shown in fig. 5, the sending end selects a sending file through the upper computer APP, inputs the ID number of the receiver, clicks the sending button, then all receiving ends receive signals to match with the ID number of the receiving end, if the ID number matching is successful, the file is stored in the receiving end computer, and if the ID number matching is unsuccessful, the file receiving fails.
In this embodiment, it can be ensured that file data can be received only if the IDs are matched, thereby implementing the specified transmission of the file.
An embodiment of the present invention provides a file transfer device, and as shown in a functional structure diagram of fig. 6, the file transfer device includes:
a conversion module 61, configured to convert the content of the transmission file into a file content optical signal;
a transmission module 62, configured to transmit the file content optical signal according to a file transmission protocol;
and the analyzing module 63 is configured to receive the file content optical signal, and analyze the file content according to the file content optical signal.
In this embodiment, the content of the transmission file is converted into the optical signal of the content of the file through the conversion module, the optical signal of the content of the file is transmitted by the transmission module according to the file transmission protocol, the optical signal of the content of the file is received by the parsing module, the content of the file is parsed according to the optical signal of the content of the file, one-to-one and one-to-many transmission of the file can be realized through a visible light communication mode, the transmission mode is simple and easy to maintain, and the electric signal of the file is converted into the optical signal to be transmitted after being encrypted.
An embodiment of the present invention provides a file transfer system, as shown in a functional structure diagram of fig. 7, where the file transfer system includes:
a transmitting end 71, a receiving end 72, an LED lamp 73 and a photoelectric detector 74;
the transmitting end 71 converts the transmission file content into a file content optical signal;
sending a file content light signal through the LED lamp 73;
the photodetector 74 receives the document content optical signal;
the receiving end 72 analyzes the content of the file according to the optical signal of the content of the file.
In some embodiments, as shown in fig. 8, the transmitting end includes: an FPGA main controller; the receiving end includes: and the FPGA is controlled by the controller.
The sending end uses a desktop application program written by a C + + based on a QT frame, selects files to be sent and ID numbers of receivers through the desktop application program, packages the files and the ID numbers and sends the files and the ID numbers to a cache of an FPGA main controller connected to a computer through a USB, then the FPGA main controller reads file data to perform digital modulation, and modulation signals send out electric signals in the form of optical signals by controlling high-speed flicker of LED lamps.
And at the receiving end, each detector simultaneously receives the optical signal and converts the optical signal into an electric signal, the analog electric signal is converted into a digital signal through an analog-to-digital conversion module and is sent to the FPGA slave controller, the FPGA slave controller demodulates the signal and then takes out the file information and the ID information, if the ID information is matched with the ID of the FPGA slave controller, the file information is sent to a computer of a file receiver through a USB, and the file receiver receives and stores the file through a desktop application program to complete a file transmission process. If the ID information is not matched, the FPGA clears the received file data from the controller, and the file data can be received only when the ID information is matched, so that the specified transmission of the file is realized.
In this embodiment, the file content is converted into the file content optical signal through the sending end, the file content optical signal is sent through the LED lamp, the file content optical signal is received by the photoelectric detector, the file content is analyzed out according to the file content optical signal by the receiving end, one-to-one and one-to-many transmission of the file can be realized through the visible light communication mode, the transmission mode is simple and easy to maintain, and the electric signal of the file is converted into the optical signal and then transmitted after being encrypted, and because the light is propagated along a straight line, the signal cannot be received in a place where the light cannot irradiate, and the file transmission safety can be improved.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional component mode. The integrated module, if implemented in the form of a software functional component and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
It should be noted that the present invention is not limited to the above-mentioned preferred embodiments, and those skilled in the art can obtain other products in various forms without departing from the spirit of the present invention, but any changes in shape or structure can be made within the scope of the present invention with the same or similar technical solutions as those of the present invention.
Claims (10)
1. A method for file transfer, comprising:
converting the content of the transmission file into a file content optical signal;
transmitting the file content optical signal according to a file transmission protocol;
and receiving the file content optical signal, and analyzing the file content according to the file content optical signal.
2. The file transfer method according to claim 1, further comprising:
digitally modulating the contents of the transmission file to convert the contents of the transmission file into a first file content digital electric signal;
and converting the first file content digital electric signal into a file content optical signal.
3. The file transmission method according to claim 1, wherein the parsing out the file content according to the file content optical signal comprises:
converting the file content optical signal into a file content analog electric signal;
converting the file content analog electric signal into a second file content digital electric signal;
and demodulating the second file content digital electric signal to obtain the file content.
4. The file transfer method according to any one of claims 1 to 3, further comprising:
distributing an ID number to each receiving end;
combining the transmission file content and the ID number of the receiving end, and converting the combination into an optical signal for transmission;
the receiving end analyzes the file content and the ID number of the receiving end;
matching the ID number of the receiving end with the ID number of the receiving end;
and if the matching is successful, saving the file content.
5. The method according to claim 1, wherein the transmitting the optical signal of the file content according to the file transfer protocol comprises:
before data transmission, the data transmission line is kept at a high level;
sending a clock period low level as an initial signal;
sending data according to a file number protocol;
and the data transmission is finished, and the high level of one clock period is kept as a stop signal.
6. The file transfer method according to claim 5, wherein the file transfer protocol comprises:
eight bits of data and three bits of signal check bits.
7. The file transmission method according to claim 6, wherein the eight bits of data are Bit 0-Bit 7, the three bits of signal check bits are Bit 8-Bit 10, and the check method comprises:
Bit0+Bit1+Bit2+Bit3+Bit4+Bit5+Bit6+Bit7＝Bit8*2^2+Bit9*2^1+Bit10*2^0。
8. a file transfer apparatus, comprising:
the conversion module is used for converting the content of the transmission file into a file content optical signal;
the transmission module is used for transmitting the file content optical signal according to a file transmission protocol;
and the analysis module is used for receiving the file content optical signal and analyzing the file content according to the file content optical signal.
9. A file transfer system, comprising:
the system comprises a sending end, a receiving end, an LED lamp and a photoelectric detector;
the transmitting end converts the content of the transmission file into a file content optical signal;
sending a file content optical signal through the LED lamp;
the photoelectric detector receives a file content optical signal;
and the receiving end analyzes the file content according to the file content optical signal.
10. The file transfer system according to claim 9, wherein the transmitting end comprises: an FPGA main controller; the receiving end includes: and the FPGA is controlled by the controller.
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| CN202110038690.XA CN112822277A (en) | 2021-01-12 | 2021-01-12 | File transmission method, device and system |
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| WO2022253042A1 (en) * | 2021-05-31 | 2022-12-08 | 维沃移动通信有限公司 | File transmission method and apparatus |
| CN117240360A (en) * | 2023-11-13 | 2023-12-15 | 新唐信通(北京)科技有限公司 | Method for visible light communication between directional transmission television screen and smart phone |
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