CN209881936U - Data transmission system - Google Patents
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- CN209881936U CN209881936U CN201920051746.3U CN201920051746U CN209881936U CN 209881936 U CN209881936 U CN 209881936U CN 201920051746 U CN201920051746 U CN 201920051746U CN 209881936 U CN209881936 U CN 209881936U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 48
- 238000004891 communication Methods 0.000 claims abstract description 41
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- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000012015 optical character recognition Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0007—Image acquisition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
Abstract
The present application relates to data transmission systems. The data transmission system comprises a first display device arranged at a first end and used for displaying an original image generated by original data; first photographing means for photographing the original image to generate a first image copy; the image sending device is connected with the first shooting device in an electric signal communication mode so as to transmit the first image copy to the second end; the image receiving device is arranged at the second end and used for receiving the first image copy, and the image processing device is connected with the image receiving device in an electric signal communication mode and used for extracting the original data from the first image copy, so that data transmission is completed.
Description
Technical Field
The utility model relates to a data transmission system, in particular to system of safe transmission data.
Background
The Supervisory Control and Data Acquisition (SCADA) system is a computer-based automated system. The SCADA system can be applied to data acquisition, data transmission, analysis and application in various fields of electric power, metallurgy, petroleum, chemical industry, gas, railways and the like so as to realize facility equipment monitoring and process control.
Since the SCADA system can be applied to key infrastructures such as energy supply, which relate to national security and public interest, the data transmission security of the system is very important in the case that data needs to be transmitted through wireless transmission or internet, especially in the case that the data comes from a remote SCADA system or the remote SCADA system is monitored by using a remote operation device.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a data transmission system that helps improving data transmission safety is provided. According to the utility model discloses data transmission system includes the first display device who sets up in the first end to show the original image that is produced by the original data; the first shooting device is used for shooting the original image displayed by the first display device to generate a first image copy; the image sending device is in communication connection with the first shooting device so as to transmit the first image copy to the second end; the image receiving device is arranged at the second end and used for receiving the first image copy; and an image processing device communicably connected to the image receiving device for extracting the original data from the image copy.
Preferably, the image processing apparatus comprises a second display device communicably connected to the image receiving apparatus for displaying the first image copy; second photographing means for photographing the first image copy displayed by the second display means to generate a second image copy; and the image conversion device is arranged at the second end and can be in communication connection with the second shooting device so as to extract the original data from the second image copy.
Preferably, the first photographing device is spaced apart from the first display device, and the second photographing device is spaced apart from the second display device.
Preferably, the first camera and the second camera each comprise an anamorphic lens such that the first image copy and the second image copy are free of non-linear distortions compared to the original image.
According to one embodiment, the first end is a first closed network and the second end is a second closed network communicatively isolated from the first closed network.
Preferably, the first closed network is in a first geographical location and the second closed network is in a second geographical location communicatively isolated from the first geographical location.
Preferably, the data transmission system further comprises an image generating device in communication connection with the first display device to generate an original image according to the original data and send the original image to the first display device.
Preferably, the data transmission system further comprises a data acquisition device arranged at the first end, and the data acquisition device is in communication connection with the image generation device so as to send acquired original data to the image generation device.
Preferably, the data transmission system further comprises an image controller connected to the first display device, the image controller being configured to display the same original image on the first display device at least 2 times, wherein the original image displayed for the first time is at a first position on the first display device and the original image displayed for the second time is at a second position on the first display device which is offset with respect to the first position.
Preferably, the image controller is configured to set, for the same original image, coordinate parameters corresponding to at least 2 display positions, which are mutually offset between the display positions, so as to display the original image once at the corresponding position of the first display device.
Alternatively, the image controller is arranged to generate a plurality of display copies of the same original image, each display copy being set with coordinate parameters determining its display position offset with respect to the positions of the other display copies, to display a respective display copy of the original image on the first display device in a respective position determined in accordance with the respective coordinate parameters.
Other aspects, corresponding aspects, advantages and advantages of the present invention will become apparent and can be understood more fully from the following detailed description, which illustrates, by way of example, the concepts and aspects of the invention.
Drawings
Embodiments of the present invention are disclosed below with reference to the accompanying drawings, wherein:
fig. 1 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of the data transmission system of FIG. 1 for data transmission;
fig. 3 is a schematic structural diagram of a data transmission system according to another embodiment of the present invention;
fig. 4A is a schematic structural diagram of a shooting device of a data transmission system according to the embodiment of the present invention;
fig. 4B is a schematic diagram of an original image display state according to an embodiment of the present invention;
fig. 4C is a schematic diagram of an image copy generated by the original image capture shown in fig. 4B, according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a non-linear distorted or distorted image generated using conventional camera shooting;
fig. 6A is a schematic diagram of multiple display of images according to an embodiment of the present invention;
FIG. 6B is a schematic illustration of the image shown in FIG. 6A being captured to produce an initial copy of the image and being compensated/corrected to obtain a collated copy of the image;
fig. 7A is a schematic diagram of a data transmission method according to an embodiment of the present invention;
fig. 7B is a schematic diagram of a data transmission method according to another embodiment of the present invention.
Detailed Description
As shown in fig. 1 and 2, the data transmission system 10 according to an embodiment of the present invention includes a first display device 208 disposed at the first end 200, a first camera 210 spaced apart from the first display device 208, an image transmitter 214 connected in communication with the first camera 210, for example, in electrical signal communication, an image receiver 414 connected in electrical signal communication with the image transmitter 214, and an image processor 413 connected in electrical signal communication with the image receiver 414. The first display device 208 and the first camera 210 are isolated from each other in terms of electrical signal communication, and only images displayed on the first display device 208 are captured by the first camera 210.
The first display device 208 may be an LED display, a projector, or the like, which may display a visual image. The first photographing device 210 may be an instrument device such as a digital camera, a webcam, etc. that can photograph and store a visual image. The image transmitting means 214 may be a wireless signal transmitter for transmitting the image photographed by the first photographing means 210 by means of, for example, a video stream (video streaming). The image sending device 214 and the first image capturing device 210 may be separate devices connected in electrical signal communication, or may be an integrated device with image and/or video capturing and sending functions, such as a web camera or a web camcorder.
Preferably, the data transmission system 10 may further include a data acquisition device 202 disposed at the first end 200, a sensor 201 and a data processing device 204 communicatively connected to the data acquisition device 202, respectively, and an image generation device 206 communicatively connected to the data processing device 204.
The data collection device 202 may collect raw data 502 associated with the first end 200, such as temperature data, pressure data, shock data, and the like, via various sensors 201. The data processing device 204 receives the raw data 502 collected by the data collection device 202 and formats it to obtain formatted raw data 504 and stores it. The image generation device 206 receives the formatted raw data 504 and converts it into a raw image 506 representing the raw data 502, such as: two-dimensional codes (QR codes), linear barcodes, PDF417 barcodes or digital images in other formats, etc. The original image 506 is displayed by the first display device 208.
Alternatively, the first display device 208 may obtain and display an original image generated from the original data in other manners, such as by obtaining and displaying the original image through a scanner input manner, so that the data acquisition device 202, the data processing device 204, and the image generation device 206 are not required.
The first end 200 and the second end 400 may be independent closed networks isolated from the external environment by electrical signal communication, such as private lan, located in the same or different geographical locations, respectively, and the electrical signal communication may be isolated from facilities such as power stations, power plants, sub-control centers, main control centers, etc. operating independently of each other and isolated from the external environment and other independent facilities by electrical signal communication. Electrical signal communication isolation.
The first terminal 200 and the second terminal 400 may also be open networks that are in electrical signal communication with the external environment. Key or sensitive data between first end 200 and second end 400 can pass through the embodiment of the utility model provides a technical scheme realizes the higher transmission of safety and security level.
The first camera 210 has a camera field of view 212. In the present embodiment, the first camera 210 is disposed outside the first end 200, and is spaced apart from the first display device 208, for example, by a distance of 0.5 to 1 meter, so that the first display device 208 is located within the camera view field 212, and the first camera 210 can capture the original image 506 displayed by the first display device 208.
The first camera 210 captures an original image 506 displayed by the first display device 208 to generate a first image copy 508. The first image copy 508 is transmitted to the image receiving device 414 via the communication channel 300 by the image transmitting device 214.
The image processing device 413, which is connected in electrical signal communication with the image receiving device 414, receives the first image copy 508 transmitted by the image receiving device 414 and extracts the image data from the first image copy 508 that generated the first image copy 508. Since the first image copy 508 is identical to the original image 506, the image data extracted from the first image copy 508 is the original data that generated the original image 506, i.e., the formatted original data 504 described above.
The image processing device 413 may further include a data recovery device 404 and a user interface 402 in electrical communication with the data recovery device 404. The data recovery device 404 converts the formatted raw data 504 into raw data 502 and displays the raw data 502 on the user interface 402, thereby completing the transmission of the raw data 502 from the first end 200 to the second end 400.
According to a preferred embodiment, the image processing device 413 comprises a second display device 410 connected in electrical signal communication with an image receiving device 414; a second camera 408 disposed at the second end 400; an image conversion device 406 connected in electrical signal communication with the second camera 408; an image restoration device 404 connected in electrical signal communication with the image conversion device 406; and a user interface 402 in electrical communication with an image rendering device 404. The first image copy 508 is transmitted to the image receiving device 414 through the image transmitting device 214 via the communication channel 300 and displayed on the second display device 410.
The second display device 410 is disposed outside the second end 400, adjacent to an edge of the second end 400. The second camera 408 is disposed inside the second end 400. The second camera 408 has a camera field of view 412. The second camera 408 is spaced apart from the second display 410, for example, by a distance of 0.5 to 1 meter, such that the second display 408 is positioned within the camera field of view 412, such that the second camera 408 can take a first image copy 508 displayed by the second display 410 to generate a second image copy 510. The second display device 410 and the second camera 408 are isolated from each other in terms of electrical signal communication, and only images displayed on the second display device 410 are captured by the second camera 408.
The second display device 410 may be an LED display, a projector, or the like, which may display a visual image. The second photographing device 408 may be a digital camera, a camera, or the like that can photograph a visible image. The second image copy 510 captured and generated by the second capturing device 408 is transmitted to the image conversion device 406 via the internal communication network of the second terminal 400. The image conversion device 406 is configured to convert the second image copy 510 into corresponding formatted image data 504. The data restoring device 404 converts the formatted image data into the raw data 502, thereby completing the transmission of the raw data 502 from the first end 200 to the second end 400. The raw data 502 may be displayed on the user interface 402 for purposes such as monitoring, data analysis, and subsequent data processing of the first end 200 at the second end 400.
In another embodiment as shown in fig. 3, the first end 200 is located in a first geographic location, such as country a. The second end 400 is located in another geographical location, for example in country B. The first camera 210 is disposed inside the first end 200, electrically isolated from other devices of the first end 200, and is limited to capturing images displayed on the first display 208 via the first camera 210. The image receiving device 414 is connected in electrical signal communication with the image transmitting device 214. The second display device 410 is disposed inside the second end 400 and is electrically isolated from the image receiving device 414 in electrical signal communication connection.
The first display device 208 is located inside the first end 200 for displaying an original image 506 generated from original data associated with the first end 200. The first camera 210 is located inside the first end 200 and spaced apart from the first display 208 for taking an original image 506 displayed by the first display 208 to generate a first image copy 508. The first image copy 508 is transmitted to the image receiving device 414 disposed at the second end 400 via the communication channel 300 and displayed on the second display device 410 electrically connected to the image receiving device 414.
The second display device 410 is disposed inside the second end 400, electrically isolated from other devices of the second end 400, and limited to capturing images displayed on the second display device 410 by the second capturing device 408. The second camera 408 is spaced apart from the second display 410 and is configured to capture a first image copy 508 displayed on the second display 410 to generate a second image copy 510. The image conversion device 406, which is connected in electrical signal communication with the second camera 408, converts the second image copy 510 into corresponding formatted image data 504. The data reduction device 404, which is connected in electrical signal communication with the image conversion device 406, converts the formatted image data 504 into the raw data 502, thereby completing the data transfer from the first end 200 to the second end 400. The raw data 502 may be displayed directly on the user interface 402 in electrical signal communication with the data recovery device 404 for purposes such as monitoring, data analysis, and subsequent data processing of the first end 200 at the second end 400.
During operation of the system, the data acquisition device 202 acquires raw data associated with the first end 200 via the sensor 201, such as: temperature data, pressure data, vibration data, etc. The data acquisition device 202 acquires raw data 502 at preset time intervals, for example, every millisecond, every second, every minute, etc., and transmits the acquired raw data 502 to the data processing device 204. The data processing means 204 converts the raw data 502 into formatted raw data 504, such as formatted raw data 504 of a CSV document, DOT document, HTML document, etc., and transmits to the image generating means 206. The image generation device 206 images the formatted raw data 504 to generate a raw image 506 representing the formatted raw data 504, such as a two-dimensional code (QR code), a linear barcode, a PDF417 barcode, or other format data image. The image generation device 206 may also convert the formatted raw data 504 into a dynamic raw image, such as: real-time video images, dynamic waveforms, dynamic charts, etc. The image generation device 206 may also directly generate the raw data 502 as the raw image 506, thereby eliminating the need to format the raw data 502. The original image 506 is then displayed at the same time interval via the first display device 208, which is in electrical signal communication with the image generation device 206.
The first photographing device 210 spaced apart from the first display device 208 photographs the original image 506 displayed by the first display device 208 to generate a first image copy 508, and then transmits the first image copy 508 to the second display device 410 through the image transmission device 214 via the Network communication channel 300, such as the internet, a local area Network, a Virtual Private Network (VPN), and the like. The image transmitting apparatus may also generate an encrypted image using an encryption algorithm to improve security of data transmission. The first camera 210 is spaced apart from the first display device 208 and isolated from electrical signal communication, and is limited to capturing images displayed on the first display device 208 via the first camera 210. The original image displayed is data of read-only attribute, and therefore, attempts to intrude into the first terminal 200, rewrite the image, or rewrite the data through the first display device 208 from outside the first terminal 200 can be effectively prevented.
The second display device 410 receives and displays the first image copy 508. The second camera 408, which is spaced apart from the second display 410, captures a first image copy 508 displayed by the second display 410 to generate a second image copy 510. The second camera 408 is spaced apart from the second display device 410 and is isolated from the second display device 410 by electrical signal communication, so that it is possible to effectively prevent an attempt from outside the second terminal 400 to penetrate the second terminal 400 through the second camera 408, rewrite an image, or rewrite data, because the image displayed on the second display device 410 is captured only by the second camera 408.
The image conversion means 406 extracts the formatted raw data 504 from the second image copy 510 generated by the second camera 408 taking, for example: formatted raw data 504 such as CSV documents, DOT documents, HTML documents, etc. are generated by means of two-dimensional code decoding, linear code decoding, Optical Character Recognition (OCR), etc. The data restoring device 404 may convert the formatted data 504 into raw data 502 and provide the raw data to the user via the user interface 402, thereby enabling data transmission from the first end 200 to the second end 400.
The first camera 210 is spaced apart from the first display 208 such that the first display 208 is within a field of view 212 of the first camera 210. Similarly, the second camera 408 is positioned within the field of view 412 of the second display device 410. The separation distance between the first camera 210 and the first display 208 and the separation distance between the second camera 408 and the second display 410 may be set to a shooting distance, such as 0.5 meters, 1 meter, etc., that allows the first camera 210 to conveniently and accurately capture the original image 506 and generate the first image copy 508, and allows the second camera 408 to conveniently and accurately capture the first image copy 508 to generate the second image copy 510. Compare in traditional image reading instrument, for example two-dimensional code (QR code) reader, bar code scanner etc, the embodiment of the utility model provides a first shooting device 210 and second shooting device 408 have longer image and shoot and read the distance, consequently can provide the shooting position setting on a larger scale to can shoot the distance according to the adjustment of different environment demands.
In order to improve the image capturing quality and accuracy under the aforementioned shooting distance condition, as shown in fig. 4A, the first camera 210 and the second camera 408 each have an undistorted lens 800, so that the first image copy 508 and the second image copy 510 (fig. 4C) generated by capturing are free from non-linear distortion compared with the original image 506 (fig. 4B) displayed on the first display device 208, thereby avoiding the possibility of data restoration failure or error caused by the generation of non-linear distortion or distorted image 590 (fig. 5) by using the conventional camera,
as shown in fig. 1, fig. 2, fig. 3, fig. 6A and fig. 6B, preferably, the data transmission system 10 provided by the embodiment of the present invention further includes an image controller 207 connected to the first display device 208, for continuously and repeatedly displaying the same original image 506 on the first display device 208, for example, repeatedly displaying the same original image 506 for 2 times or more, where, from the 2 nd display, the position of the image 5062 displayed each time on the first display device 208 is offset from the position of the image displayed last time. For example, for a rectangular two-dimensional image of 1100 × 1100 image size unit, according to the technical solution provided by the embodiment of the present invention, the same image is set to be repeatedly displayed on the first display device 208 3 times, and the upper left corner of the image is used as the position reference point, and the position coordinates of the reference point displayed 3 times are respectively: location 611(810, 45), location 612(830, 60), and location 613(750, 70).
The image controller 207 is arranged to set coordinate parameters for the same original image, which correspond to at least 2 display positions, which are mutually offset from each other, so that the original image is displayed once at each of the respective positions of the first display device 208. Alternatively, the image controller 207 is arranged to generate multiple display copies 5062 of the same original image, each display copy being set with coordinate parameters determining its display position offset relative to the positions of the other display copies. The image controller 207 sequentially sends the plurality of display copies to the first display device 208 such that one display copy 5062 of the original image 506 is sequentially displayed at a corresponding location on the first display device 208 as determined by the respective coordinate parameters.
The same original image 506 is sequentially displayed at the shifted position on the first display device 208 and multiple displayed copies 5062 of the same original image 506 are generated and sequentially displayed at the shifted position on the first display device 208, accordingly, the first camera 210 will also obtain multiple initial copies 5082 of the same original image and compare the obtained multiple initial copies 5082 of the first image. In the case where a defect occurs in a certain initial copy 5082 of the first image, which is not caused by the quality of the original image, for example, when some part of the image is blurred or missing pixels due to external reasons, so that the entire photographed image copy cannot be correctly restored to the original data, the quality defect 5083 of the initial copy of the first image is compensated and/or corrected by photographing and comparing another or multiple initial copies of the image obtained from the original image at the offset position, so as to obtain a trimmed copy 5084 of the first image, which meets the quality requirement and can be restored to the correct original data.
Additionally or alternatively, the data transmission system 10 provided by the embodiment of the present invention further includes an image controller 407 connected to the second display device 410 for continuously and repeatedly displaying the same initial copy 5082 of the first image on the second display device 410 as described above or alternatively generating a plurality of initial copies of the first image 508 and sequentially displaying them. Similarly, the quality defects of one initial copy of the image can be compensated and/or corrected by capturing and comparing one or more additional initial copies of the image obtained from the original image at the offset location, thereby obtaining a first collated copy of the image 5084, so as to meet the quality requirements and be able to be restored to the correct original data.
As shown in fig. 7A, a data transmission method 700 according to an embodiment of the present invention includes: displaying an original image generated from the original data at a first end, as illustrated by block 706; capturing the displayed original image to generate a first image copy, as shown in block 710; the first image copy is transmitted to the second end, as shown in block 716, and the original data is extracted from the first image copy at the second end, thereby achieving transmission of the original data from the first end to the second end, as shown in block 720.
Preferably, as shown in fig. 7B, the data transmission method 700 further includes, before displaying the original image, acquiring the original data at the first end, as shown in block 702; and converting the acquired raw data into an image at the first end, as shown in block 704. Displaying the original image generated from the original data at the first end in the data transmission method 700 as shown in block 706 further includes repeatedly displaying the same image at a position offset from a first display position of the original image as shown in block 708. The method 700 further includes encrypting the first image copy before transmitting the first image copy to the second end, as shown in block 714. Preferably, extracting the original data from the first copy of the image at the second end further comprises displaying the first copy of the image, as illustrated in block 722; the first image copy is captured at the second end to generate a second image copy, as shown in block 724, and the second image copy is restored to the original data, as shown in block 726.
The present application provides a complete and clear disclosure of the general concepts and technical solutions of the present invention through the above description of the embodiments thereof and the accompanying drawings. The scope of the present invention should not be construed as being limited to the particular embodiments described herein. Various changes, substitutions and/or alterations of the present invention, in its general concept and in its corresponding embodiments, will be understood by those skilled in the art to be within the scope of the present invention as defined by the appended claims.
Claims (11)
1. A data transmission system, comprising:
a first display device disposed at the first end for displaying an original image generated from the original data;
the first shooting device is used for shooting the original image to generate a first image copy;
the image sending device is in communication connection with the first shooting device and is used for transmitting the first image copy;
the image receiving device is in communication connection with the image sending device and is used for receiving the first image copy;
an image processing device communicatively coupled to the image receiving device for extracting the raw data from the first image copy.
2. The data transmission system according to claim 1, wherein the image processing apparatus comprises:
the second display device is in communication connection with the image receiving device and is used for displaying the first image copy;
second photographing means for photographing the first image copy displayed by the second display means to generate a second image copy;
and the image conversion device is arranged at the second end and can be in communication connection with the second shooting device so as to extract the original data from the second image copy.
3. The data transmission system of claim 2, wherein the first camera is spaced from the first display and/or the second camera is spaced from the second display.
4. The data transmission system of claim 2, wherein the first camera includes an undistorted lens such that the first image copy is non-linearly distorted compared to the original image, and/or the second camera includes an undistorted lens such that the second image copy is non-linearly distorted compared to the original image.
5. The data transmission system of claim 2, wherein the first end is a first closed network and the second end is a second closed network that is communicatively isolated from the first closed network.
6. The data transmission system of claim 5, wherein the first closed network is in a first geographic location and the second closed network is in a second geographic location communicatively isolated from the first geographic location.
7. The data transmission system of claim 1, further comprising an image generating device communicatively coupled to the first display device to generate an original image from the raw data and to transmit the original image to the first display device.
8. The data transmission system of claim 7, further comprising a data acquisition device disposed at the first end, the data acquisition device communicatively coupled to the image generation device to transmit the acquired raw data to the image generation device.
9. The data transmission system of claim 1, further comprising an image controller coupled to the first display device, the image controller configured to display the same original image on the first display device at least 2 times, wherein the original image displayed a first time is in a first position on the first display device and the original image displayed a second time is in a second position offset from the first position on the first display device.
10. A data transmission system as claimed in claim 9, wherein the image controller is arranged to set coordinate parameters for the same original image corresponding to at least 2 display positions, offset from each other, to display the original image once at each respective position on the first display means.
11. A data transmission system as claimed in claim 9, wherein the image controller is arranged to generate at least two display copies of the same original image, each display copy being set with coordinate parameters determining its display position offset relative to the positions of the other display copies, to display one display copy of the original image in turn on the first display device in a respective position determined in accordance with the respective coordinate parameters.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SG10201800296V | 2018-01-12 | ||
| SG10201800296V | 2018-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209881936U true CN209881936U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN107454038B (en) * | 2016-05-30 | 2021-06-29 | 北京军源合众科技发展有限责任公司 | Method for encrypting and transmitting data through two-dimensional code |
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