CN110891052A - Cross-network query system and method for spatial data of natural resources - Google Patents
Cross-network query system and method for spatial data of natural resources Download PDFInfo
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- CN110891052A CN110891052A CN201911078927.6A CN201911078927A CN110891052A CN 110891052 A CN110891052 A CN 110891052A CN 201911078927 A CN201911078927 A CN 201911078927A CN 110891052 A CN110891052 A CN 110891052A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0209—Architectural arrangements, e.g. perimeter networks or demilitarized zones
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/903—Querying
- G06F16/9032—Query formulation
Abstract
The invention discloses a natural resource spatial data cross-network query system and a method, wherein the system comprises an external network server, the external network server is respectively connected with a cloud service external network database and a switch, the switch is connected with the Internet, the switch is also connected with an internal network switch through a circuit provided with an isolation switching area, the internal network switch is respectively connected with the internal network server and an internal network spatial database, and the isolation switching area comprises an optical fiber unidirectional network gate and an image identification single gate connected with the optical fiber unidirectional network gate in parallel. Due to the adoption of equipment such as isolation exchange and the utilization of an automatic transmission technology of an image identification two-dimensional code picture, more information can be transmitted in a very small area, and meanwhile, the reliability of internal and external network exchange of natural resource space data and the stability of one-way transmission are improved, so that physical isolation is realized and satisfied in the true sense, the problems that internal network data are illegally leaked, transmission is slow and errors easily occur are prevented, and the safety of the internal network data is greatly protected.
Description
Technical Field
The invention relates to the technical field of natural resource space data query, in particular to a cross-network query system and a cross-network query method for natural resource space data.
Background
The informatization construction of natural resources is deepened continuously, more and more special services and data query work in the natural resources need to be completed in an internet environment (hereinafter referred to as an external network for short), in order to ensure information security, a government department establishes an office private network (hereinafter referred to as an internal network for short), and physically and safely isolates the internal network from the external network so as to ensure the security of data of the internal network. At present, there are two main physical isolation techniques for internal and external networks: one is network gate isolation, which guarantees data transmission between internal and external networks to a certain extent, but has a series of problems such as one-way transmission, efficiency, pure data attack, security loophole, lack of encryption mechanism, and the like, and cannot guarantee complete physical isolation. The second is optical gate isolation, which is developed based on the gatekeeper isolation technology, and although the problems of the gatekeeper are effectively avoided, the optical gate isolation also has its own limitations, for example, the unidirectional data transmission implementation protocol has limitations, the data transmission model and the strategy are not enough, and the error control technology has not enough check on the unidirectional transmission data.
The existing physical isolation technology of the internal and external networks still has a blank in the aspect of querying data of the confidential space of the internal network, and there are only cases of querying and transmitting the confidential space data under the condition of network physical isolation, so a new technical scheme needs to be provided to make up, improve and perfect the existing physical isolation technology of the internal and external networks.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides a natural resource spatial data cross-network query system, which adopts an optical fiber unidirectional network gate to transmit a query request of spatial data into an intranet, transmits data information such as pictures and the like through an image identification single gate in a physically isolated environment, and returns the data information to an extranet in a unidirectional way, thereby effectively and reliably ensuring the data security.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
the utility model provides a natural resource spatial data cross network inquiry system, includes the extranet server, the extranet server is connected with cloud service extranet database and switch respectively, the switch is connected with the internet, the switch is still through the line connection intranet switch that is provided with the isolation switch area, intranet server and intranet space database are connected respectively to the intranet switch, the isolation switch area includes the one-way net floodgate of optic fibre and the parallelly connected image identification single floodgate of this one-way net floodgate of optic fibre.
Further, the switch is connected with the internet through a line provided with a network link dynamic management system and a firewall.
Furthermore, the isolation switching area also comprises a laser unidirectional network gate and an optical disk ferrying machine which are connected with the optical fiber unidirectional network gate in parallel.
The invention also discloses a cross-network query method of the space data of the natural resources, which comprises the following steps:
s1, after receiving a query request initiated by a user in the Internet, the extranet server stores the query request into a cloud service extranet database;
s2, the external network server judges the query request and sends the query request meeting the requirement to the internal network server through the optical fiber unidirectional network gate;
s3, the intranet server analyzes the query request and searches corresponding first data information in an intranet space database according to the query request;
s4, the intranet server transmits the searched first data information to an image identification single gate;
s5, the image recognition single gate firstly converts the first data information into a two-dimensional code picture, then analyzes the two-dimensional code picture and generates second data information which is the same as the first data information, and finally transmits the second data information to an external network server;
s6, the extranet server uploads the second data information to the cloud service extranet database for being downloaded and viewed by a user.
Further, the query request comprises a query range and a query layer, the query layer is a spatial layer which needs to be queried in an intranet spatial database, the query range is a target area which needs to be queried in the spatial layer, and the target area is a polygon or a circle.
Further, the query request further includes a size parameter of the picture included in the first data information.
Further, in S2, the determining manner is to determine according to the state of the query request, where the state of the query request is an initial state when the query request is stored in the cloud service extranet database; the extranet server downloads the query request in an initial state to the local, generates a query request file, sends the query request file to the intranet server, and simultaneously modifies the state of the query request in the cloud service extranet database into a downloaded state; and when the second data information is uploaded to the cloud service extranet database, the extranet server modifies the state of the corresponding query request into a returned result.
Further, in S2, the fiber unidirectional gatekeeper scans according to a preset time interval to detect whether the query request file is transmitted, transmits the query request file to the intranet server if the query request file is detected to be transmitted, and performs MD5 code check during transmission to ensure the integrity of the query request file.
Further, in S3, the intranet server parses the query range, the query layer, and the size parameter of the picture in the query request file; then, according to the query range and the query map layer, querying in the intranet space database, analyzing the gland areas of the target area and the land parcel in the query map layer, and carrying out classification and summarization according to the attributes of the land parcel to form a summary table; then, connecting and drawing the coordinate strings of the query range on the query layer, and carrying out screenshot according to the size parameters of the picture to generate a screenshot picture; and finally, packaging the summary table and the screenshot picture into a db file in an SQlite format to serve as the first data information.
Further, in S4-S6, the intranet server first converts the first data information into a binary data stream, then divides the binary data stream into a plurality of first data packets with a preset fixed size, if the binary data stream has a portion that is smaller than the preset fixed size, the portion is used as an individual first data packet, then the image recognition single gate converts all the first data packets into two-dimensional code pictures one by one, and records binary information of each first data packet, the image recognition single gate generates a second data packet that is the same as the first data packet after parsing each two-dimensional code picture, and finally, after all the second data packets are generated, the extranet server merges all the second data packets to generate the second data information.
The invention has the beneficial effects that: due to the adoption of equipment such as isolation exchange and the utilization of an automatic transmission technology of an image identification two-dimensional code picture, more information can be transmitted in a very small area, and meanwhile, the reliability of internal and external network exchange of natural resource space data and the stability of one-way transmission are improved, so that physical isolation is realized and satisfied in the true sense, the problems that internal network data are illegally leaked, transmission is slow and errors easily occur are prevented, and the safety of the internal network data is greatly protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic block diagram of a world wide web query system according to an embodiment of the present invention;
FIG. 2 is a flowchart of a cross-network query method for spatial data of natural resources according to an embodiment of the present invention;
FIG. 3 is a flow diagram of a query request state change according to an embodiment of the invention;
FIG. 4 is a flowchart of a query process for an Intranet spatial database, according to an embodiment of the present invention;
fig. 5 is a flowchart of a query result when the query result is transmitted to an external network according to an embodiment of the present invention.
Detailed Description
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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1 to 5, the cross-network query system for spatial data of natural resources according to an embodiment of the present invention includes an extranet server, the extranet server is connected to a cloud service extranet database and a switch, the switch is connected to the internet, the switch is further connected to an intranet switch through a line provided with an isolation switching area, the intranet switch is connected to an intranet server and an intranet spatial database, respectively, and the isolation switching area includes an optical fiber unidirectional network gate and an image identification single gate connected in parallel to the optical fiber unidirectional network gate.
In one embodiment of the invention, the switch is connected to the internet through a line provided with a network link dynamic management system and a firewall.
In a specific embodiment of the present invention, the isolation switching area further includes a laser unidirectional gatekeeper and an optical disk ferry both connected in parallel with the optical fiber unidirectional gatekeeper.
The invention also provides a cross-network query method of the space data of the natural resources, which comprises the following steps:
s1, after receiving a query request initiated by a user in the Internet, the extranet server stores the query request into a cloud service extranet database;
s2, the external network server judges the query request and sends the query request meeting the requirement to the internal network server through the optical fiber unidirectional network gate;
s3, the intranet server analyzes the query request and searches corresponding first data information in an intranet space database according to the query request;
s4, the intranet server transmits the searched first data information to an image identification single gate;
s5, the image recognition single gate firstly converts the first data information into a two-dimensional code picture, then analyzes the two-dimensional code picture and generates second data information which is the same as the first data information, and finally transmits the second data information to an external network server;
s6, the extranet server uploads the second data information to the cloud service extranet database for being downloaded and viewed by a user.
In a specific embodiment of the present invention, the query request includes a query range and a query layer, where the query layer is a spatial layer that needs to be queried in an intranet spatial database, the query range is a target area that needs to be queried in the spatial layer, and the target area is a polygon or a circle.
In an embodiment of the invention, the query request further includes a size parameter of a picture included in the first data information.
In an embodiment of the present invention, in S2, the determining manner is to determine according to a state of the query request, where the state of the query request is an initial state when the query request is stored in the cloud service extranet database; the extranet server downloads the query request in an initial state to the local, generates a query request file, sends the query request file to the intranet server, and simultaneously modifies the state of the query request in the cloud service extranet database into a downloaded state; and when the second data information is uploaded to the cloud service extranet database, the extranet server modifies the state of the corresponding query request into a returned result.
In an embodiment of the present invention, in S2, the fiber unidirectional gatekeeper scans according to a preset time interval to detect whether the query request file is transmitted, transmits the query request file to the intranet server if the query request file is detected to be transmitted, and performs MD5 code check on the file during transmission to ensure the integrity of the query request file.
In a specific embodiment of the present invention, in S3, the intranet server parses the query range, the query layer, and the size parameter of the picture in the query request file; then, according to the query range and the query map layer, querying in the intranet space database, analyzing the gland areas of the target area and the land parcel in the query map layer, and carrying out classification and summarization according to the attributes of the land parcel to form a summary table; then, connecting and drawing the coordinate strings of the query range on the query layer, and carrying out screenshot according to the size parameters of the picture to generate a screenshot picture; and finally, packaging the summary table and the screenshot picture into a db file in an SQlite format to serve as the first data information.
In an embodiment of the present invention, in S4-S6, the intranet server first converts the first data information into a binary data stream, then dividing the binary data stream into a plurality of first data packets with preset fixed size, if the binary data stream has a part with less than the preset fixed size, the part is used as a single first data packet, then the image identification single gate converts all the first data packets into two-dimensional code pictures one by one, and recording the binary information of each first data packet, after each two-dimensional code picture is analyzed by the image identification single gate, generating a second data packet which is the same as the first data packet, and finally after all the second data packets are generated, and the extranet server combines all the second data packets to generate the second data information.
In order to facilitate understanding of the above-described embodiments of the present invention, the following detailed description of the embodiments of the present invention is provided by way of specific usage.
The cross-network query system for the spatial data of the natural resources comprises an external network server, a cloud service external network database, an optical fiber unidirectional network gate, an internal network server, an internal network spatial database, an image identification single gate and the like.
The extranet server is used for collecting query requests initiated by users in the Internet environment and storing the query requests in the cloud service extranet database.
The cloud service extranet database is used for storing a query request initiated by a user and recording the state of the query request.
The outer network server is provided with an outer network query request ferrying program which is used for downloading the latest query request from the cloud service outer network database at regular time, generating a query request file according to the query request and storing the query request file into an outer network storage area of the optical fiber unidirectional network gate.
The optical fiber unidirectional network gate is used for detecting the query request file in the external network storage area and ferrying and transmitting the query request file to the internal network storage area of the optical fiber unidirectional network gate.
The intranet server is provided with an intranet data query analysis program, and the program is used for performing query processing on the intranet space database according to a query request file transmitted from the intranet storage area of the optical fiber unidirectional network gate and sending a query result (namely the queried first data information) to the intranet storage area of the image identification single gate.
The intranet space database is used for storing multi-source space data of natural resources.
The image identification single gate is used for detecting the query result in the internal network storage area and sending the query result to the external network storage area of the image identification single gate.
And the external network server is provided with an external network query result uploading program which is used for uploading the query result transmitted from the external network storage area of the image identification single gate to a cloud service external network database for a user to download and view.
The invention relates to a cross-network query method of space data of natural resources, which comprises the following steps:
s1: a user sends a query requirement (namely a query request) in the Internet according to the data information to be queried, and the extranet server stores the query request in the cloud service extranet database.
S2: and an external network query request ferrying program on the external network server judges the query request stored in the cloud service external network database and sends the query request meeting the requirements to an external network storage area of the optical fiber unidirectional network gate.
S3: and after detecting the query request in the external network storage area, the optical fiber unidirectional network gate transmits the query request to the internal network storage area of the optical fiber unidirectional network gate, so that the internal network data query analysis program on the internal network server can analyze and process the query request.
S4: and the intranet data query analysis program on the intranet server queries the intranet space database according to the query request transmitted to the intranet by the optical fiber unidirectional network gate to obtain a query result, and sends the query result to the intranet storage area of the image identification single gate.
S5: and the image identification single gate detects the query result in the intranet storage area, transitions to the extranet storage area of the image identification single gate and sends the extranet storage area to the extranet server.
S6: and an external network query result uploading program on the external network server uploads the query result to a cloud service external network database for storage and later-period display application.
In S1, the query request is input from the internet, passes through the firewall and the network link dynamic management system, and is written into the cloud service extranet database by the extranet server via the router for storage. In addition, the external network has vulnerability scanning and vulnerability scanning capabilities, and dynamically monitors the environmental security of the cloud service external network. The query request comprises a query range and a query layer, and the coordinate string of the query range is used as a target area of the query layer. The query request at least comprises a target area of a target layer (namely a query layer), the target layer is the name of each spatial layer which needs to be queried in an intranet spatial database, and if a user needs to query a plurality of spatial layers, the user organizes and stores the spatial layers in a cloud service extranet database by using a matrix format (JSON). The name of the query layer is an identification code of each type of space layer in an intranet space database, the Chinese pinyin initial letter of the space layer is generally used as a single-layer name, and if the Chinese name of the space layer is '2019 land utilization current state', the name of the query layer is '2019 TDLYXZ'. The target area is a polygon, if a user draws a polygon through the program interface, the polygon may be used as the target area, if the query range input by the user is a point (i.e., a query is performed by clicking on the program interface), the point may be used as a center, the pixel width represented by 100 meters on the interface is used as a radius, and the obtained circular area is the target area. In addition, the query request further includes a size parameter of the picture included in the query result, the size parameter can be obtained through user input configuration, and if the size parameter of the picture in the query request is empty, a default size parameter can be used.
In S2, the method for judging the query request stored in the cloud service extranet database by the extranet query request ferrying program includes the following steps: s2.1, judging whether the inquiry request is transmitted to the intranet or not according to the state of the inquiry request, if not, skipping, not repeatedly transmitting to the optical fiber unidirectional network gate, and if so, sending the inquiry request to an extranet storage area of the optical fiber unidirectional network gate. One of the query requests has three states, and the state change of the query request is shown in fig. 3, specifically, when the query request initially input by the user enters the cloud service extranet database, the default setting state is "initial state"; the extranet query request ferrying program downloads a query request with an initial state to the local according to the state of the query request, generates a query request file, sends the query request file to an extranet storage area of the optical fiber unidirectional network gate, and modifies the state of the query request in a cloud service extranet database into 'downloaded'; and when the extranet query result uploading program uploads the query result to the cloud service extranet database, the state of the query request is modified into a returned result.
In S3, the optical fiber unidirectional gatekeeper scans its external storage area according to a preset time interval to detect whether the query request file is transmitted, and if the query request file is detected, the query request file is synchronously transmitted to the internal storage area of the optical fiber unidirectional gatekeeper for analysis by the internal network data query analysis program. In addition, in order to ensure that the query request file is not damaged or lost in the transmission process, the file MD5 code verification is performed in the transmission process, so that the integrity of the query request file synchronized to the intranet is ensured.
In S4, the process of performing query processing on the intranet space database according to the query request by the intranet query analysis program is shown in fig. 4, and includes: s4.1, analyzing a target range (namely a query range) and a target layer (namely a query layer) according to the query request; s4.2, the intranet inquiry analysis program enters an intranet space database according to the inquiry range and the target layer for combined inquiry, and the gland area and proportion of the elements in the inquiry range and the target layer are analyzed; s4.3, drawing the coordinate string of the query range on a target graph layer by the intranet query analysis program for displaying, and generating a screenshot picture; and S4.4, generating the area gland statistical result and the screenshot picture obtained by processing into a single file format, and sending the single file format to the image identification single gate. The above process can be specifically detailed as 1) detecting that the optical fiber unidirectional gatekeeper synchronously transmits the query request file to the intranet; 2) analyzing the size parameters of the target range, the target layer and the picture in the query request file; 3) entering an intranet space database for query according to the target range and the target map layer, analyzing a target range area and a land cover area in the target map layer, and performing classification and summarization according to attributes of land to form a summary table; 4) connecting and drawing the target range coordinate strings on a target layer, and displaying a screenshot according to the screenshot size parameter to generate a screenshot picture; and packaging the obtained summary list and the screenshot picture into a database management (db) file in a SQlite format as a query result. In addition, the intranet space database stores the multi-source space data in a tree structure, and the stored multi-source space data comprises: the method comprises the following steps of evaluating result data such as current land utilization data, land planning data, basic farmland data, administrative region boundary data, farmland quality and the like, building land for agricultural transformation, building new region project boundary, industrial and mining abandoned land reclamation project boundary, unused land development project boundary, perennial remote sensing images and the like. The data formats mainly involved are spatial data, attribute data, map tile data. The spatial data is mainly stored in a geometry type in a PostgreSQL database, the attribute data format is stored in a database structured format and an airplane deterioration format, and the map tile data format is stored in a discrete map tile format in ArcGIS.
In S5, after the image recognition single gate detects that the query result is transmitted, the image recognition single gate synchronously transmits the query result to the external network, and sends the query result to the external network query result uploading program, and in order to ensure that the file is not damaged or lost during transmission, the MD5 code check needs to be performed during transmission, so as to ensure the integrity of the query result synchronized to the external network. Specifically, the flow of the query result when being transmitted to the external network is shown in fig. 5, and includes: s5.1, the intranet server firstly converts a target data packet (namely, a query result or the first data information) into a binary data stream, then divides the binary data stream into data packets with a preset fixed size, and transmits the data packets according to a single data packet if the data packets are smaller than the preset fixed size; s5.2, converting the data packets into two-dimensional code pictures one by the image recognition single gate, and recording binary information of each data packet; s5.3, analyzing each two-dimensional code picture by the image identification single gate through a two-dimensional code image identification mode, and generating the same data packet in a storage area of an external network front-end processor (namely, an external network server) according to the two-dimensional code picture; and S5.3, after the data packet is generated, merging the data packet by the front-end processor of the outer network to generate a target data packet which is the same as the inner network.
In conclusion, by means of the technical scheme, the potential safety hazard of cross-network query transmission of the space data of the natural resources can be eliminated on the basis of the protection capability of the traditional safety product, and the safety and the stability of data center infrastructure and the quasi-real-time performance and the continuity of query service are guaranteed.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a natural resource spatial data cross network inquiry system, includes the extranet server, the extranet server is connected with cloud service extranet database and switch respectively, the switch is connected with the internet, its characterized in that, the switch is still through the line connection intranet switch that is provided with the isolation switch area, intranet server and intranet space database are connected respectively to the intranet switch, the isolation switch area includes the one-way net floodgate of optic fibre and the parallelly connected image identification single floodgate of this one-way net floodgate of optic fibre.
2. The system according to claim 1, wherein the switch is connected to the internet via a line provided with a network link dynamic management system and a firewall.
3. The system according to claim 2, wherein the isolated switching area further comprises a laser unidirectional gatekeeper and an optical disk ferry, both connected in parallel to the fiber unidirectional gatekeeper.
4. A cross-network query method for spatial data of natural resources is characterized by comprising the following steps:
s1, after receiving a query request initiated by a user in the Internet, the extranet server stores the query request into a cloud service extranet database;
s2, the external network server judges the query request and sends the query request meeting the requirement to the internal network server through the optical fiber unidirectional network gate;
s3, the intranet server analyzes the query request and searches corresponding first data information in an intranet space database according to the query request;
s4, the intranet server transmits the searched first data information to an image identification single gate;
s5, the image recognition single gate firstly converts the first data information into a two-dimensional code picture, then analyzes the two-dimensional code picture and generates second data information which is the same as the first data information, and finally transmits the second data information to an external network server;
s6, the extranet server uploads the second data information to the cloud service extranet database for being downloaded and viewed by a user.
5. The cross-network query method for spatial data of natural resources according to claim 4, wherein the query request includes a query range and a query map layer, the query map layer is a spatial map layer to be queried in an intranet spatial database, the query range is a target region to be queried in the spatial map layer, and the target region is a polygon or a circle.
6. The cross-network query method for natural resource space data according to claim 5, wherein the query request further includes a size parameter of a picture included in the first data information.
7. The cross-network query method for natural resource space data according to claim 6, wherein in S2, the determination manner is to determine according to a state of the query request, and when the query request is stored in the cloud service extranet database, the state of the query request is an initial state; the extranet server downloads the query request in an initial state to the local, generates a query request file, sends the query request file to the intranet server, and simultaneously modifies the state of the query request in the cloud service extranet database into a downloaded state; and when the second data information is uploaded to the cloud service extranet database, the extranet server modifies the state of the corresponding query request into a returned result.
8. The method for cross-network query of natural resource space data according to claim 7, wherein in S2, the fiber unidirectional gatekeeper scans according to a preset time interval to detect whether the query request file is transmitted, if the query request file is detected to be transmitted, the query request file is transmitted to the intranet server, and during the transmission process, a file MD5 code check is performed to ensure the integrity of the query request file.
9. The cross-network query method for natural resource spatial data according to claim 8, wherein in S3, the intranet server parses the query range, the query layer, and the size parameter of the picture in the query request file; then, according to the query range and the query map layer, querying in the intranet space database, analyzing the gland areas of the target area and the land parcel in the query map layer, and carrying out classification and summarization according to the attributes of the land parcel to form a summary table; then, connecting and drawing the coordinate strings of the query range on the query layer, and carrying out screenshot according to the size parameters of the picture to generate a screenshot picture; and finally, packaging the summary table and the screenshot picture into a db file in an SQlite format to serve as the first data information.
10. The cross-network query method for natural resource space data according to claim 4, wherein in S4-S6, the intranet server first converts the first data information into a binary data stream, then divides the binary data stream into a plurality of first data packets with a preset fixed size, if there is a portion of the binary data stream that is smaller than the preset fixed size, the first data packets are used as a single first data packet, then the image recognition single gate converts all the first data packets one by one into two-dimensional code pictures, and records binary information of each first data packet, the image recognition single gate analyzes each two-dimensional code picture, generates second data packets identical to the first data packets, and finally, after all the second data packets are generated, the extranet server merges all the second data packets, and generating the second data information.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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