CN111050134A - High-fault-tolerance feedback-free link image transmission method and system based on multi-channel redundancy - Google Patents
High-fault-tolerance feedback-free link image transmission method and system based on multi-channel redundancy Download PDFInfo
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- CN111050134A CN111050134A CN201911344505.9A CN201911344505A CN111050134A CN 111050134 A CN111050134 A CN 111050134A CN 201911344505 A CN201911344505 A CN 201911344505A CN 111050134 A CN111050134 A CN 111050134A
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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
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64784—Data processing by the network
- H04N21/64792—Controlling the complexity of the content stream, e.g. by dropping packets
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention has proposed a high fault-tolerant non-feedback link image transmission method and system based on multi-channel redundancy, the sending end receives TCP, UDP data flow and strips the protocol head, encode the data into the image; dividing a terminal visual window for displaying into a plurality of areas for displaying images; reorganizing and synthesizing the image data according to fault-tolerant modes R0, R1 and R10, and pushing the reorganized and synthesized image to a display terminal for displaying; the receiving end captures all images of the transmitting end by using a plurality of image acquisition modules; analyzing all image data, and fusing again to remove redundant parts; the data is subpackaged into TCP and UDP data streams again and forwarded to target equipment to realize the multi-channel redundant high fault-tolerant transmission without a feedback link under the condition of physical isolation; the problem of in the image transmission process because of single or several collection module trouble or long-time work lead to the analytical data unstable and lead to unable normal analytic image to lead to data loss is solved.
Description
Technical Field
The invention belongs to the field of information safety isolation transmission, and particularly relates to a high-fault-tolerance feedback-free link image transmission method and system based on multi-channel redundancy, which are suitable for carrying out high-reliability unidirectional data transmission without a feedback link between two mutually isolated networks.
Background
In industries with confidential requirements, such as the party and the government protecting national secrets and the enterprises and public institutions protecting business secrets or client privacy, a common security means is to physically isolate a confidential network from a public network (such as the internet), the party and the government have related management regulations, an internal network is required to be physically isolated from the internet, and the level protection promoted by the ministry of public security also has clear requirements on physical isolation. The definition of physical isolation means that there cannot be any physical device connected between two networks.
Recently, technologies such as big data, cloud computing, artificial intelligence and the like are developed vigorously, and the isolation of infrastructure of an underlying network enables the aggregation of multi-network coefficient data to become the bottleneck of the technical applications, so that how to complete the data transmission between isolated networks in a compliance and automatic manner becomes the key for landing of the technical applications such as big data and the like. At present, information security authentication departments such as public security, army and the like approve equipment such as a CD ferry machine, a two-dimensional code ferry machine and the like and issue sale permission of physical isolation transmission equipment.
At present, the existing two-dimensional code ferrying machine in the market is limited by the limitation that a single two-dimensional code can carry effective data, the number of the two-dimensional codes which can only change in each second can be increased to realize the two-dimensional code, but the problem that the two-dimensional code cannot be analyzed at all due to the fact that a plurality of two-dimensional code pictures which are shot are torn, blurred, incomplete and the like is caused at the same time, the problem that stability is reduced due to the fact that the equipment works for a long time and the environment such as temperature and humidity is affected, the problem that transmission channels are paralyzed due to the fact that any one end of the equipment fails in sending or receiving is caused, and the problem can cause that the single-pass two-dimensional.
Disclosure of Invention
The invention provides a high fault-tolerant feedback-free link image transmission method based on multi-channel redundancy, aiming at the requirement of unidirectional data transmission among physical isolation networks and solving the problem that the reliability of unidirectional data transmission can be improved under the condition of keeping the transmission rate, and the method solves the problem that the image cannot be normally analyzed due to the instability of the analyzed data caused by the faults of a single or a plurality of acquisition equipment or long-time work in the image transmission process, thereby ensuring the high-reliability data transmission under the unidirectional feedback-free physical isolation environment.
On one hand, a sending end divides a terminal visual window for display into a plurality of areas for displaying images; reorganizing and synthesizing the image data according to fault-tolerant modes R0, R1 and R10, and pushing the reorganized and synthesized image to a display terminal for displaying, wherein the R0 mode indicates that the fault is not tolerant, and all display areas display different image data; the R1 mode indicates that all the video data with the primary display area attribute have one display area with the backup display area attribute to display the same video data; r10 is compatible with R0 and R1 characteristics, the number of main display areas requiring fault tolerance can be set, and video data redundancy is performed according to the number of the main display areas. Wherein R0 has the fastest data transmission speed and 0% fault tolerance rate; r1 is slowest in data transmission, carries out 100% fault tolerance on the data and is safest; r10 sets the fault tolerance rate according to the requirement, and can be set between 0% and 100%;
on the other hand, all images of the sending end are captured by the multiple image acquisition modules at the receiving end, all image data are analyzed, the image data of the main display area are analyzed preferentially, whether the standby display area exists is judged after the analysis fails, the image data of the standby display area is analyzed if the standby display area exists, and the standby display area data are used after the analysis succeeds. And if the main display area image data is successfully analyzed, whether a standby display area exists is judged, if the standby display area image data is analyzed successfully, whether the main display area image data and the standby display area image data are consistent or not is compared, the standby display area data is discarded if the main display area image data and the standby display area image data are consistent, and a plurality of main display area data are merged into data to be forwarded.
The technical scheme has the following beneficial effects: the fault-tolerant mode can be configured according to different application scenes, and the high reliability of the system is ensured to be improved. The feedback-free one-way transmission system between the physical isolation networks can complete automatic data transmission from the low-density network to the high-density network under the condition of ensuring that the safety protection requirements are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a block diagram of an embodiment of the system of the present invention;
FIG. 3 is a schematic diagram of a fault tolerant configuration of an embodiment of the system of the present invention;
FIG. 4 is a schematic diagram of a data fusion process according to an embodiment of the present invention.
Detailed Description
The invention is described below with reference to specific examples:
in this embodiment, 4 display areas and 4 image acquisition modules are used, and data transmission is performed in an R1 fault-tolerant manner.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, which is a flowchart of a high fault-tolerance feedback-free link image transmission method and system based on multi-channel redundancy according to an embodiment of the present invention, the method solves a problem that a single-channel device of data transmission of a unidirectional feedback-free link fails to stably analyze image data, and improves reliability of a transmission link, and the method includes:
101, a sending end receives TCP and UDP data streams, and a protocol head part is stripped to encode data content into an image;
102, reorganizing and synthesizing the images according to error tolerance calculations R0, R1 and R10, and pushing the synthesized images to a display terminal for display;
103, capturing all images by a plurality of acquisition modules at a receiving end;
104, analyzing all the image data, and fusing again to remove redundant parts;
105, the data is re-split into TCP and UDP data streams and forwarded to target equipment to realize the multi-channel redundant high fault-tolerant transmission without a feedback link under the condition of physical isolation;
as shown in fig. 2, a block diagram of a system and a method for transmitting an image of a high fault-tolerant feedback-free link based on multi-channel redundancy according to another embodiment of the present invention is shown, where the system includes:
the sending end and the receiving end are not in any physical connection and are in a physical isolation state;
a 21 model configuration module, which divides a terminal visual window for display into a plurality of areas for displaying images in a sending end;
22, a data redundancy module, in the sending end, rearranging the image data according to the configured display model, and sending the rearranged image data to the display module for display;
a display module 23 for displaying the arranged image data at the transmitting end;
the receiving end does not have any information channel to feed back information to the sending end;
24 image collection module, in the receiving end, collecting the image displayed by the display module of the sending end;
25, a data fusion module, which analyzes all the collected image data and removes redundant information in a receiving end, and combines the data band after the analysis is successful to transmit;
26, a data stream forwarding module, which, in the receiving end, regenerates the TCP and UDP protocols according to the sequence of the data stream coding module at the transmitting end and the protocol type, and forwards the successfully analyzed data;
fig. 3 is a schematic diagram of a high fault-tolerant feedback-free link image transmission method and system fault-tolerant configuration based on multi-channel redundancy according to another embodiment of the present invention, where the steps are as follows:
31 dividing the display area into 4 display areas;
32 display areas with the upper 2 attributes as main display areas and the lower 2 display areas as standby display areas;
33 taking out 2 image data and putting the image data into a main display area;
34, sequentially copying the data of the main display area of the previously placed data to place the data of the main display area into a standby display area;
35 pushing the image which is completely edited according to the display model to a display terminal for displaying;
fig. 4 is a flow chart of a high fault-tolerance feedback-free link image transmission method and system data fusion based on multi-channel redundancy according to another embodiment of the present invention, where the steps are as follows:
41 analyzing the image data of the main display area;
42 attempting to analyze the image data of the display area if the analysis fails;
43 the standby display area image data is successfully analyzed and used, if the standby display area image data is also failed to be analyzed, the problem of packet loss occurs;
44, successfully analyzing the image data of the main display area and trying to analyze the image data of the auxiliary display area;
45 if the standby display area image is successfully analyzed, comparing whether the main image data and the standby image data are consistent;
46 if the data are consistent, discarding the data of the standby display area; using the primary display area data;
47 if the images are not consistent or the images in the display area fail to be analyzed, using data consistent with the analysis data MD 5;
and 48, merging the 2 main display area data into data to be forwarded after merging, and sending the data to be forwarded by the forwarding module.
Claims (12)
1. A high fault-tolerant non-feedback link image transmission method and system based on multi-channel redundancy is characterized in that the method is applied to data high fault-tolerant unidirectional transmission of non-feedback links among physically isolated networks, and the method comprises the following steps:
a sending end divides a terminal visual window for display into a plurality of areas for displaying images; the image data is reorganized and synthesized according to fault-tolerant modes R0, R1 and R10, and the reorganized and synthesized image is pushed to a display terminal to be displayed; the receiving end captures all images of the transmitting end by using a plurality of image acquisition modules; analyzing all image data, and fusing and removing redundant part data again; and the data is subpackaged into TCP and UDP data streams again and is forwarded to the target equipment to complete the data transmission of the unidirectional non-feedback link.
2. The method for transmitting the multi-channel redundancy-based high fault-tolerance non-feedback link image as claimed in claim 1, wherein the terminal visual window for displaying is divided into a plurality of areas for displaying the image, and the following steps are adopted:
step 1: acquiring coordinates of a display terminal window and coordinates required by display of a single image to be displayed;
step 2: dividing the display terminal into a plurality of display areas according to the coordinates required by image display and numbering the display areas in sequence;
and step 3: setting the attribute of each display area for displaying images, a main display area or a standby display area;
and 4, step 4: a model is generated for display according to the configuration.
3. The method as claimed in claim 2, wherein the model generated according to the configuration for displaying the image includes a display area number, each display area attribute (primary, secondary), relative coordinates of a corresponding display terminal of each display area, an up-down distance between display areas, and a left-right distance between display areas.
4. The method as claimed in claim 1, wherein the video data is recomposed and synthesized according to fault-tolerant modes R0, R1, R10, wherein the R0 mode indicates no fault-tolerance, and all display regions display different video data; the R1 mode indicates that all the video data with the primary display area attribute have one display area with the backup display area attribute to display the same video data;
r10 is compatible with R0 and R1 characteristics, the number of main display areas requiring fault tolerance can be set, and video data redundancy is performed according to the number of the main display areas. Wherein R0 has the fastest data transmission speed and 0% fault tolerance rate; r1 is the slowest in data transmission, and 100% fault tolerance is performed on the data safely and reliably; r10 sets the fault tolerance rate according to the requirement, and can be set between 0% and 100%.
5. The method for transmitting the image of the high-fault-tolerance feedback-free link based on the multi-channel redundancy as claimed in claim 4, wherein the fault-tolerant mode R0 comprises the following steps:
step 1: analyzing the number n of all display areas for displaying according to the model for generating the display image;
step 2: and generating n images which are sequentially placed on the display terminal identified by the display model to be displayed.
6. The method for transmitting the image of the high-fault-tolerance feedback-free link based on the multi-channel redundancy as claimed in claim 4, wherein the fault-tolerant mode R1 comprises the following steps:
step 1: analyzing the number n of all display areas with the attribute of the main display area according to the generated model for displaying the image, wherein n is more than 0;
step 2: generating n images which are sequentially placed in a display area with the attribute of the display area as the main;
and step 3: analyzing the number m of all display areas with the attributes of the display areas as standby according to the generated model for displaying the image, wherein m is n;
and 4, step 4: sequentially copying the data of the main display area in which the data is placed to a standby display area;
and 5: and pushing the image which is completely compiled according to the display model to a display terminal for displaying.
7. The method for transmitting the image of the high-fault-tolerance feedback-free link based on the multi-channel redundancy as claimed in claim 4, wherein the fault-tolerant mode R10 comprises the following steps:
step 1: analyzing the number n of all display areas with the attribute of the main display area according to the generated model for displaying the image, wherein n is more than 0;
step 2: generating n images which are sequentially placed in a display area with the attribute of the display area as the main;
and step 3: analyzing the number m of all display areas with the attributes of the display areas as standby according to a model for generating a display image, wherein m is less than n;
and 4, step 4: randomly copying the data of the main display area where the data are placed to a standby display area;
and 5: and pushing the image which is completely compiled according to the display model to a display terminal for displaying.
8. The method for transmitting the multi-channel redundancy-based high fault-tolerance non-feedback link image according to claim 1, wherein the steps of analyzing all image data and re-fusing and removing redundant part data comprise:
step 1: analyzing the image data of the main display area;
step 2: if the analysis fails, trying to analyze the image data of the display area;
and step 3: analyzing the image data of the standby display area successfully to use the data of the standby display area, and analyzing the next image data if the image data of the standby display area fails to be analyzed;
and 4, step 4: successfully analyzing the image data of the main display area and trying to analyze the image data of the standby display area;
and 5: if the standby display area image is successfully analyzed, comparing whether the main image data and the standby image data are consistent;
step 6: if the data are consistent, discarding the data of the standby display area; using the primary display area data;
and 7: if the images are not consistent or the images in the display area fail to be analyzed, the data consistent with the analysis data MD5 are used;
and 8: and merging the 2 main display area data into data to be forwarded after merging, and sending the data to be forwarded by a forwarding module.
9. A high fault-tolerance feedback-free link image transmission system based on multi-channel redundancy is characterized by comprising:
the sending end and the receiving end are not in any physical connection and are in a physical isolation state, the sending end forms a plurality of display areas, and the receiving end uses a plurality of image acquisition modules to acquire image data corresponding to the sending end;
the model configuration module is used for dividing a terminal visual window for display into a plurality of areas for displaying images in the sending end;
the data redundancy module rearranges the image data according to the configured display model in the sending end and sends the rearranged image data to the display module for display;
the display module displays the arranged image data in the sending end;
the receiving end does not have any information channel to feed back information to the sending end;
the image acquisition module is arranged in the receiving end and used for acquiring the image displayed by the display module of the sending end;
the data fusion module analyzes all the acquired image data and removes redundant information in the receiving end, and combines and forwards the data after the analysis is successful;
and the data flow forwarding module is used for regenerating TCP and UDP protocols for forwarding the successfully analyzed data according to the coding sequence and the protocol type of the data flow coding module at the sending end.
10. The system according to claim 9, wherein the redundancy model module uses the method of claims 2 and 3 to create the redundancy model.
11. The system according to claim 9, wherein the data redundancy module rearranges the image data by the method of claims 5, 6, and 7.
12. The system according to claim 9, wherein the data fusion module performs multi-channel data fusion by the method of claim 8.
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| CN201911344505.9A CN111050134A (en) | 2019-12-24 | 2019-12-24 | High-fault-tolerance feedback-free link image transmission method and system based on multi-channel redundancy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112787888A (en) * | 2021-01-16 | 2021-05-11 | 鸣飞伟业技术有限公司 | System based on non-feedback data one-way transmission sharing switching technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112787888A (en) * | 2021-01-16 | 2021-05-11 | 鸣飞伟业技术有限公司 | System based on non-feedback data one-way transmission sharing switching technology |
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