WO2021018129A1

WO2021018129A1 - Method and structure for verifying data

Info

Publication number: WO2021018129A1
Application number: PCT/CN2020/105122
Authority: WO
Inventors: 周兴昌
Original assignee: 周兴昌
Priority date: 2019-07-28
Filing date: 2020-07-28
Publication date: 2021-02-04
Also published as: CA3145991A1; TW202111599A

Abstract

A method and structure for transmitting data. The method comprises: in the process that a display card of a first computer sends data to a first image acquisition device and the first image acquisition device sends data to a second computer, step 1: a verification mechanism is used when an image acquisition card acquires an image, so as to ensure that the image acquisition card acquires the image successfully; step 2: the second computer only processes the image once in a service scene. The chaos of a system can be avoided while data security is ensured.

Description

A method and structure for verifying data

Technical field

The invention relates to the field of Internet/computer technology.

Background technique

In today's society, many companies and units have their own websites to publish information for customers and users to understand their own information. However, such websites have greater security risks and are easily attacked by hackers, allowing hackers to follow the path and visit The database of the company website caused the leakage of company data.

Data is exchanged between computers through image acquisition devices. Although it is safe, frame loss often occurs, which can easily cause incomplete data on the website.

Summary of the invention

A signal line is arranged between the display card and the image acquisition device, the signal line is used for the image acquisition device to send a signal to the display card, and the signal line is a single signal line.

The image acquisition device sends the first signal or the second signal to the display card of the first computer;

or,

The image acquisition device sends the first signal or the second signal to the first computer through the gpio of the first computer;

or,

The image acquisition device sends the first data to the second computer, and the second computer sends the first signal or the second signal to the first computer through the gpio of the first computer;

or,

The image acquisition device sends the first data to the second computer, the image output port of the second computer of the second computer sends the second data to the second acquisition device, and the second acquisition device sends the second data or the third data to the first computer.

GPIO (English: General-purpose input/output), short for general-purpose input and output.

The structure of data transmission is: the image output port of the first computer is connected to the image acquisition device;

The image acquisition device is connected to the gpio of the first computer;

or,

The image acquisition device is connected to a second computer, and the second computer is connected to the gpio of the first computer.

The advantages of the present invention: while ensuring data security, it can also avoid system chaos.

Description of the drawings

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

Fig. 1 is a flowchart of an embodiment of a method for transmitting data between a first computer and a second computer of the present invention;

Figure 2 is a schematic structural diagram of an embodiment of a data transmission device of the present invention;

Figure 3 is the first sample of the image in the present invention;

Figure 4 is a second sample of the image in the present invention;

Figure 5 is a third sample of the image in the present invention;

Description with icon number:

The first computer, 2. The first image acquisition device, 3. The second image acquisition device, 4. The second computer, 5. The first display card, 6. The second display card, 7. The third display card, 8. Section Four display cards, 9. The first display, 10. The second display.

The second display card is a part of the first computer, the second display card 6 is connected to the first display 9, and the first display 9 is used to display the desktop of the first computer;

The fourth display card is a part of the second computer, the fourth display card 8 is connected to the second display 10, and the first display 10 is used to display the desktop of the second computer.

The display card of the first computer sends data to the first image acquisition device. Each first image corresponds to a serial number, which is used for verification when the second computer processes the data to ensure that the second computer only processes the first image in the current business scenario. Image once.

The display card sends an image to the image acquisition device. If the image acquisition device successfully acquires the image, the image acquisition device sends a signal to the display card that the image acquisition is successful. If the image capture card is unsuccessful or incompletely successful (the captured image is incomplete), the image capture device discards the incomplete image and sends a signal to the display card that the image is unsuccessful, or the display card sends the image After the image acquisition device sends the image, if the signal of successful acquisition by the image acquisition device is not received within a certain period of time (such as 1 second), the display card sends the image to the image acquisition device again.

The image acquisition device sends the image to the second computer. In a designated business scenario, the same image can only be processed by the second computer once.

In the process of processing the first data, the database server performs parameter processing on the parameters in the first data. Parameterized processing, including parameterized insertion, deletion, query, etc. Parameterized Query (Parameterized Query or Parameterized Statement) refers to the use of parameters to give values where values or data need to be filled in when designing to link to the database and access data. This method is currently regarded as the most effective A defense method that can prevent SQL injection attacks (SQL Injection).

Detailed ways

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the specific embodiments of the present invention will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings and obtained Other embodiments.

In order to make the drawings concise, the figures only schematically show the parts related to the present invention, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is schematically shown, or only one of them is marked. In this article, "a" not only means "only this one", but can also mean "more than one".

1. Create a website:

A website W is established in the first computer 1. The user information of the website W is stored in the database B. The user information includes: user name, password and user personal information; personal information includes: name, phone number, etc. The database B is installed in the second computer 4; the steps of storing the user information of the website W in the database B are described in detail in the following implementation column; in the subsequent embodiments, the program developer can choose different development tools as needed.

The first computer is a web server (Web Server); the first computer is also called an application server (Application Server).

The second computer is a database server (Database Server). The main purpose of the database server is to receive and store data sent by the first computer (Web server or application server or other computer).

2. Setting:

1) The first display card 5 and the third display card 7 are the same type of display card, and the characteristics of the display card include:

A. In the initial situation, the computer's desktop code is not sent to the display card;

B. After the driver of the display card receives an image or an image file or all the pixel information in an image, the driver of the display card controls the display card to convert the received data into image signals suitable for VGA or DVI port transmission. The image signal is sent out via the VGA or DVI port of the display card.

The steps for the driver of the display card to receive an image or an image file or pixel information in an image are as follows:

① Install the display card in a computer and add a dynamic link library Rec.dll to the computer. The dynamic link library contains the Recpic() function. The Recpic() function can be called by other programs. The Recpic() function is a user mode Function. The function Recpic() can receive data from other programs. The data includes image files, images and pixel information in the image, etc. The possible functions of the function Recpic() are described in detail in the implementation examples;

②The function Recpic() sends the received data to a designated function in the driver of the display card. When the designated function receives data, it is equivalent to the driver of the first display card.

C. The display card can transmit up to 24 frames of images per second.

2) Add a dynamic link library Rec.dll under the system directories of the first computer and the second computer.

3) In the embodiment, the program M in the first computer or the program J in the second computer can recognize and obtain the data in the specified image when running, and the program P in the first computer and the program J in the second computer can both be Generate an image; the functions of program M, program J, and program P are described in detail in the embodiments. Developers who write programs M, program J, and program P can choose different development tools according to their needs in common development languages (tools) or platforms.

4) The first computer sends images through the video/image output port of the first display card (or the second computer sends images through the video/image output port of the third display card), and the recognized content in the image contains letters, numbers, The height of text, symbols, and content in the image is between 1.5 mm and 40 mm, the background color in the image is white, the color of the content in the image is black, and the line spacing of the content in the image is between 1 mm and 15 mm.

It should be noted that after the data in the image sent by the computer through the video/image output port of the display card is recognized, blank lines need to be eliminated first. The recognized data in the image in the implementation example no longer contains blank lines.

5) Please refer to the following table for the data format in the image:

Table I

To	长度(字节)Length (bytes)	类型Types of	举例For example
序号Serial number	2020	整数 Integer	80028002
命令类型Command type	3030	字符character	“Login”"Login"
用户名username	2020	字符character	ZhangZhang
密码password	2020	字符character	HelloHello

As shown in Table 1 above, it is the data format A in the image. See Figure 3 for its display on the screen.

Table II

To	长度(字节)Length (bytes)	类型Types of	举例For example
序号Serial number	2020	整数 Integer	80028002
用户登录成功的标识User logon successfully	11	字符character	YY
姓名Name	2020	字符character	ZhangSanZhangSan
电话phone	1111	字符 character	1388888888813888888888

As shown in Table 2 above, it is the data format B in the image. Please refer to Figure 4 for its display form on the screen.

Table Three

As shown in Table 3 above, it is the data format C in the image. See Figure 5 for its display on the screen.

In another embodiment of the present invention, the second image acquisition device can run a software F, the software F can identify and acquire data in a specified image, and the second image acquisition device has network communication capabilities. In this embodiment, the first computer 1 and the second image acquisition device 2 are connected by a network cable.

1. User F opens the user login page of website W, enters the user name and password, and clicks the "Login" button.

2. The first computer runs a program P and generates a serial number. The range of the serial number is from 5000 to 65535. If the serial number generated is greater than 65535, the serial number is equal to 5000, and the serial number increases sequentially. Assuming that the serial number generated this time is 8002, program P will 8002, "login", user name and password are placed in a frame of image X, the display form of a frame of image X on the screen is shown in Figure 3 (the data format in a frame of image Y refers to the data format A in the image), the program P calls the function Recpic() in the dynamic link library Rec.dll, and the program P transfers the image X to the function Recpic(), and the function Recpic() can receive images from other programs.

3. The function Recpic() sends the received image to a designated function in the driver of the first display card.

4. The first computer converts the image X into a signal suitable for transmission by the DVI port of the first display card (the first display card is considered to be an integral part of the first computer), and then sends the signal to the first image acquisition device. A computer sends an image number to the first image acquisition device. The image number ranges from 1 to 10, and is used cyclically. Assuming that the image number sent this time is 8, we think that the number corresponding to image X is 8, and put image X into the image In the queue or task list.

5. Program P runs a section of socket server program and a section of socket receiver (the server port number is 8002.

6. The first image acquisition device receives the image X and the image processing verification signal from the video/image output port of the first display card of the first computer, and the first image acquisition device converts the image processing verification signal into inspection data. 1", or the first image acquisition device outputs inspection data "1" from the first display card of the first computer, or the first image acquisition device generates inspection data "1" and then sends it to the second computer.

The first display card sends the image X to the first image acquisition device. If the first image acquisition device successfully acquires the image X, the first image acquisition device sends a signal to the first display card that the image is successfully acquired, and the image acquisition device sends the image to the first computer. The display card sends a signal of successful image acquisition;

or,

The image acquisition device sends a signal of successful image acquisition to the first computer through the gpio of the first computer;

or,

The image acquisition device sends the image X to the second computer, and the second computer sends a signal that the image acquisition is successful to the first computer through the gpio of the first computer;

or,

The image acquisition device sends the image X to the second computer, and the second computer sends "1" to the second acquisition device,

or,

The image acquisition device sends the image X to the second computer, and the second computer sends the image N to the second acquisition device. The first row of the image N is "1".

If the image capture card captures the image X unsuccessfully or incompletely (the captured image is incomplete), the first image capture device discards the incompletely captured image, and the image capture device sends the captured image to the display card of the first computer. Signal of success

or,

The image acquisition device sends a signal that the image acquisition is unsuccessful to the first computer through the gpio of the first computer;

or,

The image acquisition device sends a message to the second computer, and the second computer sends a signal that the image acquisition is unsuccessful to the first computer through the gpio of the first computer;

or,

The image acquisition device sends a message to the second computer, and the second computer sends "1" to the second acquisition device,

or,

The image acquisition device sends a message to the second computer, and the second computer sends the image N to the second acquisition device. The first line of the image N is "0", or the first display card sends the image X to the first image acquisition device. If after a certain period of time (for example, 1 or 10 seconds), the first image acquisition device does not receive a successful signal, the first computer sends the image X to the first image acquisition device through the first display card of the first computer.

Then the first image acquisition device recognizes and acquires the data on the image X; then sends the data to the second computer, the data received by the second computer; or, the first image acquisition device receives the video/video from the first display card of the first computer The image output port receives the image X, and then the first image acquisition device sends the image X to the second computer, and the second computer runs the program J to recognize the data in the image X.

7. The second computer performs the following operations:

The sequence number corresponding to the inspection image of program J is "8", and the inspection data is "1", and the program J will further process. If the inspection data is "0", the operation ends. The inspection data is "1" indicating the serial number "8" The corresponding processing status is "unprocessed", the check data is "1" is the initial state corresponding to all serial numbers, and the check data is "0" indicating that the processing state corresponding to the serial number "8" is "processed".

If the second line of the data judged by program J is "login", the third line of the data read by program J is the user name, and the fourth line is the password. Program J reads the record in database B and verifies the user name and password. Program J processes the parameterized query of the user name and password.

A) If the user name and password match, the user's personal information will be returned. The personal information is name and phone number. Program J puts the serial number, the logo of the user's successful login, and the user's personal information in a frame of image S. The display form of a frame of image S on the screen is shown in Figure 4 (the data format of a frame of image S is shown in Table 2 above. ), in image S, the first line is the serial number (or session number), and the second line is "Y"; the second computer stores the serial number (or session number) in the second computer, and the serial number (or session number) is The user name forms a set of correspondences. In other words, at this time, the user name has a corresponding serial number (or session number); the inspection data corresponding to the program J inspection image is changed to "0";

B) If the user name and password do not match, it will return "user name and password do not match", program J puts the serial number, the logo of the user's unsuccessful login and "user name and password do not match" in a frame of image S See Figure 5 for the display form on the screen (see Table 3 for the data format in a frame of image S); the inspection data corresponding to the inspection image in program J is changed to "0";.

8. Program J calls the function Recpic() in the dynamic link library Rec.dll, and the function Recpic() reads the image S.

9. The function Recpic() sends the received image to a designated function in the driver of the third display card.

10. The second computer (the third display card is considered a component of the second computer) converts the image S into a signal suitable for transmission by the DVI port of the third display card, and then sends the signal to the second image acquisition device .

11. The second image acquisition device receives images from the image/video output port of the third display card in the second computer. There is a data line between the third display card and the second image acquisition device. The second image acquisition device sends a signal to the third display card.

The third display card sends the image S to the second image acquisition device. If the second image acquisition device successfully acquires the image S, the second image acquisition device sends a signal to the third display card that the image is successfully acquired. If the image capture card captures the image S unsuccessfully or incompletely (the captured image is incomplete), the second image capture device discards the captured incomplete image and sends a signal to the third display card that the captured image is unsuccessful. Or, after the third display card sends the image S to the second image acquisition device, if the signal of successful acquisition by the second image acquisition device is not received after a certain time (such as 1 second), the third display card sends the second image acquisition device again. Send image S once.

The driver of the second image acquisition device sends the received image to software F in the first computer. Software F recognizes and obtains the data in the image. If the number in the first line of the data is 8002, then software F runs a socket The sender (client program), a socket sender program sends out the data identified in the image, and the socket communication port number used by a socket sender program is 8002.

12. The first computer receives the data, and the software F also performs the following operations: close the client of the socket communication program. The first computer also performs the following operations:

1) Close the receiving end (server end) of the above socket communication program;

2) If the data contains the letters "Y", "User login successful" and the user's personal information, the first computer sends the user's personal information to the computer of user F, and the display of the computer of user F displays "User login successful ";

3) If the data contains letters "N" and "user name and password do not match", the first computer will send "user name already exists or the password entered twice is inconsistent" to the computer of user F, user F "The user name and password do not match" is displayed on the monitor of the computer.

13. User F clicks the "View User Information" button on his computer, and the first computer puts the serial number (or session number), "query", user name and other information in the first and second lines of the picture Q , The third line, then the picture Q and the image processing check signal "1" are sent to the first image acquisition device, the first computer sends an image number to the first image acquisition device, the image number is from 1 to 10, and it is recycled , Assuming that the number of the image sent this time is 5, we think the number corresponding to the image Q is 5, and put the image Q into the image queue or task list;

14. If the first image acquisition device fails to collect the above-mentioned data, the first image acquisition device or the second computer informs the first computer, and the first computer controls the first display card to send the image Q, image processing check signal, and serial number again ; The second computer recognizes the data of the picture Q, if the second line is "query", then read the user name and its corresponding serial number (or session number) stored in the second computer,

B)1) If the user name stored in the picture Q is found in the second computer and the serial number (or session number) corresponding to the user name is the same as the serial number (or session number) in the picture Q, then this username is related Customer information and serial number (or session number) are placed in picture w, and the second computer sends the picture w to the first computer;

2) Otherwise, put "Your visit does not meet the specifications" in picture w, and the second computer will send the picture w to the first computer;

15. The inspection data corresponding to the inspection image of the program J is changed to "0", indicating that the image Q has been processed, and the first computer sends the information in the picture w to the user's computer.

In another embodiment of the invention:

1. The WEB server places the three requests for accessing the database in image 1, image 2 and image 3. The first computer runs a software K, and software K places image 1, image 2 and image 3 in an image queue In or in a task list;

2. The first image acquisition device receives the image 1 successfully from the video/image output port of the first display card of the WEB server, the first image acquisition device sends a signal of successful image acquisition to the first display card, or the first image The acquisition device sends a signal of successful image acquisition to the gpio of the first computer, or the image acquisition device sends a message to the second computer, and the second computer sends a signal of successful image acquisition to the first computer through the gpio of the first computer. An image acquisition device converts the signal into 0001.jpg and sends it to the second computer,

3. Then the first display card starts to transmit images 2.

The first image acquisition device converts image 2 into 0002.jpg and sends it to the database server;

Then the first display card starts to transmit images 3.

The first image acquisition device converts image 3 into 0003.jpg and sends it to the database server.

4. The database server receives 0001.JPG, 0002.jpg, 0003.jpg and stores them in the D\recpic\ directory of the database server.

5. The database server places the result requests of

processing images

1, 2, and 3 in image A, image B, and image C, respectively. The database server runs a software K, and software K places image A, image B, and image C in In an image queue or in a task list;

6. After the second image acquisition device successfully receives image A from the video/image output port of the third display card of the WEB server, the second image acquisition device sends a signal of successful image acquisition to the third display card, and the second image acquisition device Convert the signal to 0001.jpg and send it to the WEB server,

7. Then the third display card starts to transmit images B.

The second image acquisition device converts image B into 0002.jpg and sends it to the WEB server;

Then the third display card starts to transmit image C,

The second image acquisition device converts the image C into 0003.jpg and sends it to the WEB server.

In another embodiment of the present invention:

1. There are image 1, image 2 and image 3 in the first computer. The first computer runs a software K, and the software K puts image 1, image 2 and image 3 in an image queue or a task list;

2. The first computer converts image 1, image 2, and image 3 into signals suitable for transmission by the VGA port of the first display card. The signals suitable for transmission by the VGA port are called signal 1, signal 2, and signal 2, respectively, signal 1 Send out via the VGA port of the first display card.

3. The first image acquisition device receives the signal 1 successfully from the video/image output port of the first display card of the first computer, the first image acquisition device sends a signal that the image is successfully acquired to the first display card, and the first image acquisition The device converts the signal into 0001.jpg and sends it to the second computer.

4. Then the first display card starts to transmit signals 2.

The first image acquisition device converts signal 2 into 0002.jpg and sends it to the second computer;

Then the first display card starts to transmit signals 3.

The first image acquisition device converts signal 3 into 0003.jpg and sends it to the second computer.

The second computer receives 0001.JPG, 0002.jpg, 0003.jpg, and stores them in the D\recpic\ directory of the second computer.

It should be noted that in any of the above embodiments:

The output port of the display card can be an image output port such as DVI, HDMI, VGA, etc. The input port of the corresponding image acquisition device also adopts the corresponding image input port, and the first computer converts the relevant image/image file into a suitable first display The signal transmitted by the DVI, HDMI, VGA and other output ports of the card is transmitted, and the second computer converts the relevant image/image file into a signal suitable for transmission by the DVI or HDMI or VGA output port of the third display card for transmission. In addition, any device that can obtain data from the first computer and send image signals to the image acquisition device should be regarded as a substitute product for the display card, such as FPGA. Users can use the techniques in the above implementation examples to perform various operations, such as modifying user passwords.

As shown in Figure 1, a method for transmitting data, used to transmit data between a first computer and a second computer, includes:

Step S10: the display card of the first computer sends data to the first image acquisition device, and the first image acquisition device sends data to the second computer;

Step S20: The first step: a verification mechanism is adopted when the image capture card captures images to ensure that the image capture card successfully captures the image; the second step: in the current business scenario, the second computer processes the image only once.

A further preferred solution is:

Preferred:

The first computer sends the first data to the first image acquisition device through the image output port of the first computer;

The first image acquisition device sends the first signal or the second signal to the display card of the first computer;

or,

The first image acquisition device sends the first signal or the second signal to the first computer through the gpio of the first computer;

or,

The first image acquisition device sends the first data to the second computer, and the second computer sends the first signal or the second signal to the first computer through the gpio of the first computer;

or,

The image acquisition device sends the first data to the second computer, the second computer sends the second data to the second acquisition device through the image output port of the second computer, and the second acquisition device sends the second data or the third data to the first computer.

Preferred:

The first signal or the second data or part of the information of the second data indicates that the first data collected by the image acquisition device is incomplete or unsuccessful, and the first computer sends the first data to the image acquisition device again; or,

After the first computer sends the first data to the image acquisition device for a period of time, the first computer does not receive the first signal sent by the image acquisition device or the second computer, and the first computer sends the first data to the image acquisition device again.

Preferred:

The second signal or third data or partial information of the third data indicates that the image acquisition device successfully acquires the first data, and the first computer sends the fourth data to the image acquisition device.

Preferred:

Before the first data is sent by the first computer, the first computer places a plurality of first data accessing the database in a queue or task list.

Preferred:

When the second computer processes the first data, the second computer performs parameterization processing on the first data or the fourth data, and the parameterization processing includes a parameterized query.

Preferred:

The first data includes first information and second information;

The fourth data contains third information and fourth information. If the third information is consistent with the first information and the fourth information is consistent with the second information, the second computer uses the first method to process the first data; if the third information is consistent with The first information is inconsistent or the fourth information is inconsistent with the second information, and the second computer uses the second method to process the fourth data.

Preferred:

The first computer sends the first data or the fourth data to the image acquisition device through the image output port of the first computer, and the first computer sends the serial number corresponding to the first data or the fourth data to the image acquisition device through the image output port of the first computer , The image acquisition device sends the serial number to the second computer;

The second computer checks the processing normal state corresponding to the serial number,

If the processing state is the processed state, terminate the next operation;

If the processing normal state corresponding to the serial number is the unprocessed state, the second computer sets the initial processing state corresponding to the serial number to the unprocessed state;

The second computer marks the processing normal state corresponding to the serial number as the processed state.

Preferably: the first computer is a web server or an application server.

Preferably: the second computer is a database server.

Preferably: the image acquisition device is connected to the gpio of the first computer;

or,

The image acquisition device is connected to the second computer, and the second computer is connected to the gpio of the first computer.

It should be noted that the above embodiments can be freely combined as required. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also It should be regarded as the protection scope of the present invention.

Claims

A method for verifying data, which is used to transmit data between a first computer and a second computer, and is characterized in that it includes:

The first computer sends the first data to the first image acquisition device through the image output port of the first computer;

Sending the first signal or the second signal to the display card of the first computer by the first image acquisition device;

or,

Sending, by the first image acquisition device, the first signal or the second signal to the first computer through the gpio of the first computer;

or,

The first image acquisition device sends the first data to the second computer, and the second computer sends the first signal or the second signal to the first computer through the gpio of the first computer. signal;

or,

The image acquisition device sends the first data to the second computer, the second computer sends the second data to the second acquisition device through the image output port of the second computer, and the second acquisition device sends The second data or the third data is given to the first computer.
The method of verifying data according to claim 1, wherein:

The first signal or the second data or partial information of the second data indicates that the image acquisition device is incomplete or unsuccessful in acquiring the first data, and the first computer sends the image acquisition device to the image acquisition device. Send the first data once; or,

After the first computer sends the first data to the image acquisition device for a period of time, the first computer does not receive the first signal sent by the image acquisition device or the second computer, the The first computer sends the first data to the image acquisition device again.
The method of verifying data according to claim 1, wherein:

The second signal or the third data or partial information of the third data indicates that the image acquisition device successfully acquires the first data, and the first computer sends the fourth data to the image acquisition device.
The method of verifying data according to claim 1, wherein: in the process of processing the first data by the second computer, the second computer performs processing on the first data or the fourth data. Parameterized processing, the parameterized processing includes parameterized query.
The method of verifying data according to claim 1, wherein:

The first computer sends the first data or the fourth data to the image acquisition device through the image output port of the first computer, and the first computer sends the image acquisition to the image acquisition device through the image output port of the first computer. The device sends the serial number corresponding to the first data or the fourth data, and the image acquisition device sends the serial number to the second computer;

The second computer checks the processing normal state corresponding to the serial number,

If the processing state is the processed state, terminate the next operation;

If the processing normal state corresponding to the serial number is the unprocessed state, the second computer sets the initial processing state corresponding to the serial number to the unprocessed state;

The second computer marks the processing normal state corresponding to the serial number as a processed state.
The method for verifying data according to claim 1 or 2 or 3 or 4, wherein the first computer is a Web server or an application server.
The method for verifying data according to claim 1 or 3 or 5 or 6, wherein the second computer is a database server.
A structure for verifying data, characterized in that: the image output port of the first computer is connected to an image acquisition device;

The image acquisition device is connected to the gpio of the first computer;

or,

The image acquisition device is connected to a second computer, and the second computer is connected to the gpio of the first computer,

Alternatively, the image/video output port of the display card of the first computer is connected to the input port of the image capture device, or the image capture device is an image capture card, the image capture device is installed in the second computer, and the display There is a data line between the card and the image acquisition device, and the data line is used for the image acquisition device to send a signal to the display card.