CN113448527B - Data synchronization method, device, computer equipment and storage medium - Google Patents

Data synchronization method, device, computer equipment and storage medium Download PDF

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CN113448527B
CN113448527B CN202110720212.7A CN202110720212A CN113448527B CN 113448527 B CN113448527 B CN 113448527B CN 202110720212 A CN202110720212 A CN 202110720212A CN 113448527 B CN113448527 B CN 113448527B
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CN113448527A (en
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邓涛
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Huake Finance Leasing Co ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/14Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1454Digital 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1095Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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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 corresponding target synchronous instructions; acquiring the latest historical instruction between the server and each large screen; if all the latest historical instructions are the same, sending the target synchronous instruction to the large screens so that the large screens perform data synchronization according to the target synchronous instruction; the method solves the problem that the prior art cannot realize synchronous updating and synchronous display of the data, improves the data interaction performance of the visual large-screen system, and meets the requirement of the large-screen system on timely synchronization of the data.

Description

Data synchronization method, device, computer equipment and storage medium
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 the pictures can be arbitrarily windowed, enlarged, reduced and overlapped; the application field of the visual large-screen system is more and more wide along with the coming of the digital age, the monitoring, centralized scheduling and communication systems are more and more applied at present, and the application industry is mainly distributed in the fields of traffic, government, finance, energy, broadcast television and the like.
However, the current visual large screen system controls each large screen independently through an independent server, the system has poor data interactivity, and the data synchronous update and synchronous display cannot be realized.
Disclosure of Invention
Aiming at the defects in the prior art, the data synchronization method, the device, the computer equipment and the storage medium provided by the invention solve the problem that the data synchronization update and the synchronization display cannot be realized in the prior art, improve the data interaction performance of the visual large-screen system and meet the requirement of the large-screen system on timely synchronization of data.
In a first aspect, the present invention provides a data synchronization method applied to a visual large screen system, where the visual large 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 corresponding target synchronous instructions; acquiring the latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronous instruction to the large screens so that the large screens perform data synchronization according to the target synchronous instruction.
Optionally, if there are differences in all the latest history instructions, the method further includes: acquiring target historical instructions in all latest historical instructions; transmitting the target historical instructions to the large screens, and enabling the large screens to perform data synchronization according to the target historical instructions; and if feedback instructions sent by all the large screens are received, updating the current latest historical instructions of each large screen into the target historical instructions according to the feedback instructions.
Optionally, converting the synchronization data sent by each control terminal into a corresponding target synchronization instruction includes: transmitting a preset encryption rule to each control terminal, so that each control terminal encrypts 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, each control terminal encrypts the synchronous data according to the preset encryption rule to obtain a synchronous data request, including: acquiring a registration communication card identifier and an identity identifier of a current control terminal; encrypting the synchronous data into a first-order ciphertext according to the registration 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, including: 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 onto 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 connection with the plurality of control terminals, including: 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 device 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 device includes: the communication connection establishment module is used for establishing communication connection with the plurality of control terminals; the synchronous data conversion module is used for converting synchronous data sent by each control terminal into corresponding target synchronous instructions; the historical instruction acquisition module is used for acquiring the latest historical instruction between the server and each large screen; and the synchronous instruction sending module is used for sending the target synchronous 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 synchronous 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 corresponding target synchronous instructions; acquiring the latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronous instruction to the large screens so that the large screens perform data synchronization according to the target synchronous 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 corresponding target synchronous instructions; acquiring the latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronous instruction to the large screens so that the large screens perform data synchronization according to the target synchronous instruction.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, communication connection is established between the server and the plurality of control terminals, and the synchronous data sent by each control terminal is generated into corresponding synchronous instructions and sent to the plurality of large screens, so that each large screen performs data synchronization according to the synchronous instructions.
Drawings
Fig. 1 is a schematic flow chart of a data synchronization method according to an embodiment of the present invention;
fig. 2 is a schematic flowchart showing the specific process of step S102 in fig. 1;
fig. 3 is a block diagram of a data synchronization device according to an embodiment of the present invention.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
Fig. 1 is a schematic flow chart of a data synchronization method according to an embodiment of the present invention; as shown in fig. 1, the method is applied to a visual large screen system, the visual large screen system comprises a plurality of control terminals, a server and a plurality of large screens, and the data synchronization method specifically comprises the following steps:
and step S101, establishing communication connection with the plurality of control terminals.
In this embodiment, establishing communication connection 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 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.
It should be noted that, the control terminal includes, but is not limited to, a smart phone, a PAD, and a PC computer, where the server is configured to control the plurality of large screens to perform data display and update, and in the visual large screen system, the plurality of control terminals are connected to the server in a communication manner, and the server is connected to the plurality of large screens in a communication manner, and the plurality of control terminals perform synchronous update on the data of the plurality of large screens through the server.
In this embodiment, the control terminal sends a registration communication instruction to the server, so that the server registers according to the identity in the registration communication instruction, and generates a corresponding registration communication certificate, so that the control terminal generates a request communication instruction according to the registration communication certificate; further, the server performs identity verification of the control terminal according to the identity in the request communication instruction, and when the identity verification is successful, the server performs verification according to whether the effective communication duration in the registration communication card is in the effective period, and when the effective period is in the effective period, the registration communication card is verified successfully, so that the control terminal and the server establish communication connection.
Step S102, the synchronous data sent by each control terminal is converted into a corresponding target synchronous instruction.
As shown in fig. 2, in this embodiment, the conversion of the synchronization data sent by each control terminal into a corresponding target synchronization instruction includes:
step S201, a preset encryption rule is sent to each control terminal, so that each control terminal encrypts 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 203, 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 command.
In this embodiment, each control terminal encrypts the synchronization data according to the preset encryption rule to obtain a synchronization data request, including: acquiring a registration communication card identifier and an identity identifier of a current control terminal; encrypting the synchronous data into a first-order ciphertext according to the registration 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 onto 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 registration communication certificate identifier, the formula expression for encrypting the synchronous data into the first-order ciphertext is as follows:
C=M e mod n
wherein, C represents a first-order ciphertext, and M represents synchronous data.
In the present embodiment, a single piece of F is described P Elliptic curves on the upper, commonly used to six parameters: t= (p, a, b, n, x, y), (p, a, b) is used to determine an elliptic curve, p is the number of points in the prime number domain, and a and b are two large numbers therein; (x, y) is the coordinates of the G base point, and is also two large numbers; n is the order of the base point of point G; the above six quantities can describe an elliptic curve, and the following is a procedure for encrypted communication by using the elliptic curve: (1) Selecting an elliptic curve F P (a, b) and taking a point on the elliptic curve as a base point G; (2) Taking the identity mark d as a private key and generating a public key Q=dG; (3) Will F P (a, b), base point G and point Q to the user; (4) After receiving the information, the user encodes the first-order ciphertext C to be transmitted to F P A target point C' on (a, b) and generating a random integer r; (5) public key encryption (ciphertext C "is a point pair): c "= { rG, C' +rq }. (6) Private key decryption (C '+rq-d (rG)), the decryption result is the target point C', the decryption formula is as follows: c ' +rq-d (rG) =c ' +r (dG) -d (rG) =c '; and (7) decoding the point C' to obtain the first-order ciphertext C.
In another embodiment of the present invention, the formula for encrypting the target point according to the curve public key is:
Figure SMS_1
wherein the coordinates of the base point G are (x, y), and the coordinates of the target point C' are (m 1 ,m 2 ) Second order ciphertext C' is (C 0 ,C 1 ,C 2 )。
In this embodiment, the preset encryption rule further includes encrypting the synchronous data by means of MD5, exclusive or, etc., to obtain the synchronous data request.
Step S103, obtaining the latest historical instructions between the server and each large screen.
It should be noted that, the latest historical command is the command closest to the current time among all the historical commands sent to the large screen by the server.
And step S104, if all the latest historical instructions are the same, sending the target synchronous instruction to the large screens so that the large screens perform data synchronization according to the target synchronous instruction.
It should be noted that, in order to verify whether each large screen is the same instruction executed currently, the server determines whether all current historical instructions are the same, if all the current historical instructions are the same, it means that the communication connection between each large screen and the server is normal and is in a data synchronization state currently, and when the synchronization instruction is sent again, synchronous update of the data can be ensured.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, communication connection is established between the server and the plurality of control terminals, and the synchronous data sent by each control terminal is generated into corresponding synchronous instructions and sent to the plurality of large screens, so that each large screen performs data synchronization according to the synchronous instructions.
In this embodiment, if there are differences in all the latest history instructions, the method further includes: acquiring target historical instructions in all latest historical instructions; transmitting the target historical instructions to the large screens, and enabling the large screens to perform data synchronization according to the target historical instructions; and if feedback instructions sent by all the large screens are received, updating the current latest historical instructions of each large screen into the target historical instructions according to the feedback instructions.
It should be noted that, in order to judge whether the communication connection between all the large screens and the server is normal at present, the latest target historical instruction is sent again for verification, if synchronous feedback of all the large screens can be received, the communication is normal and the data display of the large screen is not affected; if the synchronous feedback of all the large screens cannot be received, notifying a worker to perform fault detection on the large screen which is not fed back, and ensuring that the visualized large screen system performs data synchronous display; the target historical instructions are the corresponding latest historical instructions with the largest number of identical instructions in all the current latest historical instructions.
In this embodiment, the step of synchronizing data 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 instructions to the server, which forwards the instructions to the large screen. (2) The server establishes communication after verifying the instruction, the control system and the large screen of the client end can preset the safety code and the version number before running, the server and the control system correspond to the safety code and the version number one by one, the safety code and the version number can be verified before sending the message, and after confirming that the information is the same, the safety connection is established and the communication is carried out. (3) The server receives the data sent by the control end and converts the data into corresponding instructions through an algorithm, the control end shifts the sent data bytes, and then the server decodes the bits and moves back to the original data to form instructions. (4) And the plurality of large screens simultaneously acquire the converted instructions of the verification server, and the instructions received by the plurality of large screens are preset instructions. And the large screens are constantly connected with the server, and when the server data change, the large screens receive corresponding instruction data. And the large screens verify the historical instructions with the server, so that the historical instructions are identical, and under the condition of identical verification, the server sends an execution instruction message again, and the large screens execute the instructions. (5) a plurality of large screens simultaneously execute corresponding instructions.
In this embodiment, the communication is based on an HTTP communication to solve the problem of data synchronization of the large-screen visualization system, establish communication between the mobile phone or the PAD and the large-screen visualization system, send a corresponding control instruction through the control end, and execute the corresponding instruction after the large-screen receives the instruction.
Fig. 3 is a block diagram of a data synchronization device according to an embodiment of the present invention; as shown in fig. 3, the device is applied to a visual large screen system, the visual large screen system comprises a plurality of control terminals, a server and a plurality of large screens, and the device comprises:
a communication connection establishment module 110, configured to establish communication connections with the plurality of control terminals;
the synchronous data conversion module 120 is configured to convert synchronous data sent by each control terminal into a corresponding target synchronous instruction;
a historical instruction acquisition module 130, configured to acquire a latest historical instruction between the server and each large screen;
and the synchronous instruction sending module 140 is configured to send the target synchronous 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 synchronous instruction.
In another embodiment of the 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 steps of: establishing communication connection with the plurality of control terminals; converting the synchronous data sent by each control terminal into corresponding target synchronous instructions; acquiring the latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronous instruction to the large screens so that the large screens perform data synchronization according to the target synchronous instruction.
In yet another embodiment of the present invention, there is provided 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 corresponding target synchronous instructions; acquiring the latest historical instruction between the server and each large screen; and if all the latest historical instructions are the same, sending the target synchronous instruction to the large screens so that the large screens perform data synchronization according to the target synchronous instruction.
Those skilled in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a non-volatile computer readable storage medium, and where the program, when executed, may include processes in the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile 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), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
It should be noted that in this document, relational terms such as "first" and "second" and the like are 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Claims (9)

1. The data synchronization method is characterized by being 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, the control terminals comprise smart phones, PADs and PC computers, and the server is used for controlling the large screens to display and update data, and the method comprises the following steps:
the plurality of control terminals are in communication connection with the server, and the server is in communication connection with the plurality of large screens;
converting the synchronous data sent by each control terminal into corresponding target synchronous instructions;
acquiring the latest historical instruction between the server and each large screen; the latest historical instructions are the most recent instructions from all the historical instructions sent to the large screen by the server;
if all the latest historical instructions are the same, sending the target synchronous instruction to the large screens so that the large screens perform data synchronization according to the target synchronous instruction;
if the latest historical instructions are different, acquiring target historical instructions in the latest historical instructions; transmitting the target historical instructions to the large screens, and enabling the large screens to perform data synchronization according to the target historical instructions; if feedback instructions sent by all the large screens are received, updating the current latest historical instructions of each large screen into the target historical instructions according to the feedback instructions; the target historical instructions are corresponding latest historical instructions with the largest number of identical instructions in all current latest historical instructions.
2. The data synchronization method of claim 1, wherein converting the synchronization data transmitted from each control terminal into a corresponding target synchronization instruction comprises:
transmitting a preset encryption rule to each control terminal, so that each control terminal encrypts 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.
3. The data synchronization method according to claim 2, wherein each control terminal encrypts the synchronization data according to the preset encryption rule to obtain a synchronization data request, and the method comprises:
acquiring a registration communication card identifier and an identity identifier of a current control terminal;
encrypting the synchronous data into a first-order ciphertext according to the registration communication certificate identifier;
and encrypting the first-order ciphertext into a second-order ciphertext according to the identity to obtain the synchronous data request.
4. The data synchronization method of claim 3, wherein encrypting the first-order ciphertext into a second-order ciphertext based on the identity, to obtain the synchronization 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 onto 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.
5. The data synchronization method of claim 1, wherein establishing communication connection 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.
6. The data synchronization method according to claim 5, wherein before receiving the request communication instruction sent 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.
7. A data synchronization device based on the data synchronization method of claim 1, wherein the device is applied to a visual large screen system, the visual large screen system includes a plurality of control terminals, a server and a plurality of large screens, and the device includes:
the communication connection establishment module is used for establishing communication connection with the plurality of control terminals;
the synchronous data conversion module is used for converting synchronous data sent by each control terminal into corresponding target synchronous instructions;
the historical instruction acquisition module is used for acquiring the latest historical instruction between the server and each large screen;
and the synchronous instruction sending module is used for sending the target synchronous 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 synchronous instruction.
8. 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 processor implements the steps of the method of any one of claims 1 to 6 when the computer program is executed.
9. A readable storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, realizes the steps of the method of any of claims 1 to 6.
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