CN113448527A - Data synchronization method and device, computer equipment and storage medium - Google Patents
Data synchronization method and device, computer equipment and storage medium Download PDFInfo
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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Abstract
The invention provides a data synchronization method, a data synchronization device, computer equipment and a storage medium, wherein the method comprises the steps of establishing communication connection with a plurality of control terminals; converting the synchronous data sent by each control terminal into a corresponding target synchronous instruction; acquiring a latest historical instruction between the server and each large screen; if all the latest historical instructions are the same, sending the target synchronization instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target synchronization instruction; the invention solves the problem that the prior art can not realize synchronous updating and synchronous display of data, improves the data interaction performance of a visual large-screen system, and meets the requirement of the large-screen system on timely synchronization of data.
Description
Technical Field
The present invention relates to the field of data synchronization technologies, and in particular, to a data synchronization method, apparatus, computer device, and storage medium.
Background
The visual large-screen system can display various workstations, network signals and various video signals, and pictures can be opened, enlarged, reduced and overlapped at will; the application field of the visual large-screen system is more and more extensive with the coming of the digital era, the monitoring, centralized scheduling and communication system is mostly applied at present, and the applied industry is mainly distributed in the fields of traffic, government, finance, energy, broadcasting and television and the like.
However, in the existing visual large-screen system, each large screen is independently controlled through an independent server, the system data interactivity is poor, and synchronous updating and synchronous display of data cannot be realized.
Disclosure of Invention
Aiming at the defects in the prior art, the data synchronization method, the data synchronization device, the computer equipment and the storage medium provided by the invention solve the problem that the prior art cannot realize synchronous updating and synchronous display of data, improve the data interaction performance of a visual large-screen system and meet the requirement of the large-screen system on timely synchronization of the data.
In a first aspect, the present invention provides a data synchronization method, which is applied to a large visual screen system, where the large visual screen system includes a plurality of control terminals, a server, and a plurality of large screens, and the method includes: establishing communication connection with the plurality of control terminals; converting the synchronous data sent by each control terminal into a corresponding target synchronous instruction; acquiring a latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronization instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target synchronization instruction.
Optionally, if there are differences in all the latest historical instructions, the method further includes: acquiring target historical instructions in all latest historical instructions; sending the target historical instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target historical instruction; and if the feedback instructions sent by all large screens are received, updating the current latest historical instruction of each large screen as the target historical instruction according to the feedback instructions.
Optionally, converting the synchronization data sent by each control terminal into a corresponding target synchronization instruction includes: sending a preset encryption rule to each control terminal, and enabling each control terminal to encrypt the synchronous data according to the preset encryption rule to obtain a synchronous data request; receiving the synchronous data request sent by each control terminal; decrypting the synchronous data request according to a preset decryption rule to obtain the synchronous data; and if the same data does not exist in all the current synchronous data, converting the synchronous data into the target synchronous instruction.
Optionally, the encrypting, by each control terminal, the synchronous data according to the preset encryption rule to obtain a synchronous data request includes: acquiring a registered communication certificate identifier and an identity identifier of a current control terminal; encrypting the synchronous data into a first-order cipher text according to the registered communication certificate identifier; and encrypting the first-order ciphertext into a second-order ciphertext according to the identity to obtain the synchronous data request.
Optionally, encrypting the first-order ciphertext into a second-order ciphertext according to the identity to obtain the synchronous data request includes: selecting an elliptic curve and a point on the elliptic curve as a base point; generating a curve public key according to the base point and the identity; encoding the first-order ciphertext to the elliptic curve to obtain a target point corresponding to the first-order ciphertext; and encrypting the target point according to the curve public key to obtain the second-order ciphertext.
Optionally, establishing communication connections with the plurality of control terminals includes: receiving a communication request instruction sent by the control terminal; verifying the registration communication certificate in the request communication instruction; and when the verification is successful, establishing communication connection with the control terminal.
Optionally, before receiving the communication request instruction sent by the control terminal, the method further includes: receiving a registration communication instruction sent by the control terminal, wherein the registration communication instruction comprises an identity of the control terminal; generating a registration communication card of the control terminal according to the identity and the effective duration; and sending the registration communication certificate to the control terminal, so that the control terminal generates a request communication instruction according to the registration communication certificate.
In a second aspect, the present invention provides a data synchronization apparatus, which is applied to a large-screen visualization system, where the large-screen visualization system includes a plurality of control terminals, a server, and a plurality of large screens, and the apparatus includes: the communication connection establishing module is used for establishing communication connection with the plurality of control terminals; the synchronous data conversion module is used for converting the synchronous data sent by each control terminal into a corresponding target synchronous instruction; the historical instruction acquisition module is used for acquiring the latest historical instruction between the server and each large screen; and the synchronization instruction sending module is used for sending the target synchronization instruction to the large screens if all the latest historical instructions are the same, so that the large screens perform data synchronization according to the target synchronization instruction.
In a third aspect, the present invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program: establishing communication connection with the plurality of control terminals; converting the synchronous data sent by each control terminal into a corresponding target synchronous instruction; acquiring a latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronization instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target synchronization instruction.
In a fourth aspect, the present invention provides a readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of: establishing communication connection with the plurality of control terminals; converting the synchronous data sent by each control terminal into a corresponding target synchronous instruction; acquiring a latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronization instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target synchronization instruction.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the server establishes communication connection with the plurality of control terminals, and generates the corresponding synchronous instruction from the synchronous data sent by each control terminal and sends the synchronous instruction to the plurality of large screens, so that each large screen performs data synchronization according to the synchronous instruction.
Drawings
Fig. 1 is a schematic flow chart illustrating a data synchronization method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a detailed flow chart of step S102 in FIG. 1;
fig. 3 is a block diagram illustrating a data synchronization apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
Fig. 1 is a schematic flow chart illustrating a data synchronization method according to an embodiment of the present invention; as shown in fig. 1, the data synchronization method is applied to a large-screen visualization system, where the large-screen visualization system includes a plurality of control terminals, a server, and a plurality of large screens, and the data synchronization method specifically includes the following steps:
and step S101, establishing communication connection with the plurality of control terminals.
In this embodiment, establishing communication connections with the plurality of control terminals includes: receiving a communication request instruction sent by the control terminal; verifying the registration communication certificate in the request communication instruction; and when the verification is successful, establishing communication connection with the control terminal.
Further, before receiving a communication request instruction sent by the control terminal, the method further includes: receiving a registration communication instruction sent by the control terminal, wherein the registration communication instruction comprises an identity of the control terminal; generating a registration communication card of the control terminal according to the identity and the effective duration; and sending the registration communication certificate to the control terminal, so that the control terminal generates a request communication instruction according to the registration communication certificate.
It should be noted that the control terminals include, but are not limited to, a smart phone, a PAD, and a PC computer, the server performs data display and update for controlling the large screens, the control terminals are in communication connection with the server in the visual large screen system, the server is in communication connection with the large screens, and the control terminals update the data of the large screens synchronously through the server.
In this embodiment, the control terminal sends a registration communication instruction to the server, so that the server performs registration according to the identity identifier in the registration communication instruction to generate a corresponding registration communication certificate, and the control terminal generates a request communication instruction according to the registration communication certificate; further, the server performs identity authentication of the control terminal according to the identity in the request communication instruction, performs authentication according to whether the effective communication duration in the registration communication certificate is in the effective period after the identity authentication is successful, and performs authentication of the registration communication certificate when the effective communication duration is in the effective period, so that the control terminal and the server establish communication connection.
Step S102, the synchronous data sent by each control terminal is converted into corresponding target synchronous instructions.
As shown in fig. 2, in the present embodiment, converting the synchronization data sent by each control terminal into a corresponding target synchronization instruction includes:
step S201, sending a preset encryption rule to each control terminal, and enabling each control terminal to encrypt synchronous data according to the preset encryption rule to obtain a synchronous data request;
step S202, receiving the synchronous data request sent by each control terminal;
step S203, decrypting the synchronous data request according to a preset decryption rule to obtain the synchronous data;
step S204, if the same data does not exist in all the current synchronous data, converting the synchronous data into the target synchronous instruction.
In this embodiment, the encrypting the synchronous data by each control terminal according to the preset encryption rule to obtain the synchronous data request includes: acquiring a registered communication certificate identifier and an identity identifier of a current control terminal; encrypting the synchronous data into a first-order cipher text according to the registered communication certificate identifier; and encrypting the first-order ciphertext into a second-order ciphertext according to the identity to obtain the synchronous data request.
In this embodiment, encrypting the first-order ciphertext into a second-order ciphertext according to the identity to obtain the synchronous data request includes: selecting an elliptic curve and a point on the elliptic curve as a base point; generating a curve public key according to the base point and the identity; encoding the first-order ciphertext to the elliptic curve to obtain a target point corresponding to the first-order ciphertext; and encrypting the target point according to the curve public key to obtain the second-order ciphertext.
It should be noted that, according to the registered communication certificate identifier, the formula expression for encrypting the synchronous data into the first-order ciphertext is as follows:
C＝Me mod n
wherein C represents a first-order cipher text and M represents synchronization data.
Note that, in this embodiment, a piece F is describedPThe above elliptic curve, commonly used to six parameters: t ═ p, a, b, n, x, y), (p, a, b) are used to determine an elliptic curve, p is the number of points in the prime field, a and b are the two largest numbers therein; (x, y) are coordinates of a G base point, and are also two large numbers; n is the order of the base point of point G; the above six quantities may describe an elliptic curve, and the following is the process of encrypted communication using the elliptic curve: (1) selecting an elliptic curve FP(a, b) taking a point on the elliptic curve as a base point G; (2) taking the identity d as a private key and generating a public key Q ═ dG; (3) f is to beP(a, b), base point G and point Q to the user; (4) user receives letterAfter information is obtained, the first-order ciphertext C to be transmitted is encoded to FP(ii) a target point C' on (a, b) and generating a random integer r; (5) public key encryption (ciphertext C "is a pair of points): c ″ { rG, C' + rQ }. (6) The private key is decrypted (C '+ rQ-d (rG)), and the decryption result is the target point C', and the decryption formula is as follows: c ' + rQ-d (rg) ═ C ' + r (dg) -d (rg) ═ C '; (7) the first-order ciphertext C may be obtained by decoding the point C'.
In another embodiment of the present invention, the formula for encrypting the target point according to the curve public key is as follows:
wherein the coordinates of the base point G are (x, y), and the coordinates of the target point C' are (m)1,m2) The second-order ciphertext C' is (C)0,C1,C2)。
In this embodiment, the preset encryption rule further includes encrypting the synchronous data by means of MD5, exclusive or, and the like, to obtain the synchronous data request.
And step S103, acquiring the latest historical instruction between the server and each large screen.
It should be noted that the latest historical instruction is an instruction which is closest to the current time among all the historical instructions sent to the large screen by the server.
And step S104, if all the latest historical instructions are the same, sending the target synchronization instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target synchronization instruction.
It should be noted that, in order to verify whether each current large screen is the same executed instruction, the server determines whether all current latest historical instructions are the same, if all the latest historical instructions are the same, it indicates that the communication connection between each large screen and the server is normal and the current large screen is in a data synchronization state, and when the synchronization instruction is sent again, the synchronous update of the data can be guaranteed.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the server establishes communication connection with the plurality of control terminals, and generates the corresponding synchronous instruction from the synchronous data sent by each control terminal and sends the synchronous instruction to the plurality of large screens, so that each large screen performs data synchronization according to the synchronous instruction.
In this embodiment, if all the latest historical instructions are different, the method further includes: acquiring target historical instructions in all latest historical instructions; sending the target historical instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target historical instruction; and if the feedback instructions sent by all large screens are received, updating the current latest historical instruction of each large screen as the target historical instruction according to the feedback instructions.
It should be noted that, in order to determine whether the communication connections between all large screens and the server are normal at present, the latest target history instruction is sent again for verification, and if all large screens can be received in a synchronous feedback manner, the normal communication is indicated and the data display of the current large screen is not affected; if the synchronous feedback of all large screens cannot be received, informing the staff to carry out fault detection on the large screens which are not fed back, and ensuring that the visual large screen system carries out data synchronous display; the target historical instruction is the latest historical instruction corresponding to the current all latest historical instructions with the largest number of the same instructions.
In this embodiment, the step of data synchronization further includes: (1) receiving a communication request instruction of a control system, wherein the control system operates on a mobile phone iOS, Android and WIN10 system; the whole interaction process is as follows: the control system sends an instruction to the server, and the server forwards the instruction to the large screen. (2) The server establishes communication after verifying the instruction, a security code and a version number are preset before the control system and the client large screen run, the server and the control system correspond to the security code and the version number one by one, the security code and the version number are verified before sending the message, and after confirming that the information is the same, the secure connection is established and communication is carried out. (3) The server receives data sent by the control end, converts the data into corresponding instructions through an algorithm, the control end displaces the sent data bytes, and then the server decrypts the bits and moves the bits back to the original data to form the instructions. (4) And the large screens simultaneously acquire the instructions converted by the verification server, and the instructions received by the large screens are preset instructions. The large screens are constantly connected with the server, and when the server data are changed, the large screens receive corresponding instruction data. And the plurality of large screens and the server verify the historical instructions to ensure that the historical instructions are the same, and under the condition of same verification, the server sends the execution instruction message again, and the large screens execute the instructions. And (5) simultaneously executing corresponding instructions by a plurality of large screens.
In the embodiment, the communication is based on an HTTP communication to solve the data synchronization problem of the large-screen visualization system, the communication between the mobile phone or the PAD and the plurality of large-screen visualizations is established, the control terminal sends a corresponding control command, and the large-screen visualizations execute the corresponding command after receiving the command.
Fig. 3 is a block diagram illustrating a data synchronization apparatus according to an embodiment of the present invention; as shown in fig. 3, the apparatus is applied to a large-screen visualization system, the large-screen visualization system includes a plurality of control terminals, a server, and a plurality of large screens, and the apparatus includes:
a communication connection establishing module 110, configured to establish communication connections with the plurality of control terminals;
a synchronous data conversion module 120, configured to convert synchronous data sent by each control terminal into a corresponding target synchronous instruction;
a history instruction obtaining module 130, configured to obtain a latest history instruction between the server and each large screen;
and a synchronization instruction sending module 140, configured to send the target synchronization instruction to the large screens if all the latest historical instructions are the same, so that the large screens perform data synchronization according to the target synchronization instruction.
In another embodiment of the present invention, a computer device is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program: establishing communication connection with the plurality of control terminals; converting the synchronous data sent by each control terminal into a corresponding target synchronous instruction; acquiring a latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronization instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target synchronization instruction.
In a further embodiment of the invention, a readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, realizes the following steps: establishing communication connection with the plurality of control terminals; converting the synchronous data sent by each control terminal into a corresponding target synchronous instruction; acquiring a latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronization instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target synchronization instruction.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A data synchronization method is applied to a visual large-screen system, wherein the visual large-screen system comprises a plurality of control terminals, a server and a plurality of large screens, and the method comprises the following steps:
establishing communication connection with the plurality of control terminals;
converting the synchronous data sent by each control terminal into a corresponding target synchronous instruction;
acquiring a latest historical instruction between the server and each large screen;
and if all the latest historical instructions are the same, sending the target synchronization instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target synchronization instruction.
2. The data synchronization method of claim 1, wherein if there are not all the latest historical instructions, the method further comprises:
acquiring target historical instructions in all latest historical instructions;
sending the target historical instruction to the large screens, and enabling the large screens to carry out data synchronization according to the target historical instruction;
and if the feedback instructions sent by all large screens are received, updating the current latest historical instruction of each large screen as the target historical instruction according to the feedback instructions.
3. The data synchronization method of claim 1, wherein converting the synchronization data transmitted by each control terminal into a corresponding target synchronization command comprises:
sending a preset encryption rule to each control terminal, and enabling each control terminal to encrypt the synchronous data according to the preset encryption rule to obtain a synchronous data request;
receiving the synchronous data request sent by each control terminal;
decrypting the synchronous data request according to a preset decryption rule to obtain the synchronous data;
and if the same data does not exist in all the current synchronous data, converting the synchronous data into the target synchronous instruction.
4. The data synchronization method of claim 3, wherein the encrypting the synchronization data by each control terminal according to the preset encryption rule to obtain the synchronization data request comprises:
acquiring a registered communication certificate identifier and an identity identifier of a current control terminal;
encrypting the synchronous data into a first-order cipher text according to the registered communication certificate identifier;
and encrypting the first-order ciphertext into a second-order ciphertext according to the identity to obtain the synchronous data request.
5. The data synchronization method of claim 4, wherein encrypting the first-order ciphertext into a second-order ciphertext according to the identity to obtain the synchronized data request comprises:
selecting an elliptic curve and a point on the elliptic curve as a base point;
generating a curve public key according to the base point and the identity;
encoding the first-order ciphertext to the elliptic curve to obtain a target point corresponding to the first-order ciphertext;
and encrypting the target point according to the curve public key to obtain the second-order ciphertext.
6. The data synchronization method of claim 1, wherein establishing communication connections with the plurality of control terminals comprises:
receiving a communication request instruction sent by the control terminal;
verifying the registration communication certificate in the request communication instruction;
and when the verification is successful, establishing communication connection with the control terminal.
7. The data synchronization method according to claim 6, wherein before receiving the request communication instruction transmitted by the control terminal, the method further comprises:
receiving a registration communication instruction sent by the control terminal, wherein the registration communication instruction comprises an identity of the control terminal;
generating a registration communication card of the control terminal according to the identity and the effective duration;
and sending the registration communication certificate to the control terminal, so that the control terminal generates a request communication instruction according to the registration communication certificate.
8. The utility model provides a data synchronizer, its characterized in that is applied to visual large-screen system, visual large-screen system includes a plurality of control terminal, server and a plurality of large-screen, the device includes:
the communication connection establishing module is used for establishing communication connection with the plurality of control terminals;
the synchronous data conversion module is used for converting the synchronous data sent by each control terminal into a corresponding target synchronous instruction;
the historical instruction acquisition module is used for acquiring the latest historical instruction between the server and each large screen;
and the synchronization instruction sending module is used for sending the target synchronization instruction to the large screens if all the latest historical instructions are the same, so that the large screens perform data synchronization according to the target synchronization instruction.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 7 are implemented by the processor when executing the computer program.
10. A readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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| CN115103357A (en) * | 2022-08-26 | 2022-09-23 | 汉仪科技(深圳)有限公司 | 5G communication encryption system based on FPGA |
| CN115103357B (en) * | 2022-08-26 | 2022-11-25 | 汉仪科技(深圳)有限公司 | 5G communication encryption system based on FPGA |
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