Detection system and method of display control panel, equipment, medium and program product

Abstract

The invention provides a detection system and method of a display control panel, equipment, a medium and a program product, and relates to the technical field of equipment detection, and the system comprises a test host, and a mainboard to be detected and a detection device which are connected with the test host; the mainboard to be tested comprises a display screen driving module; the test host is used for respectively outputting a test image signal to the mainboard to be tested and the detection device; the to-be-tested mainboard is used for performing signal conversion on the test image signal based on the display screen driving module to obtain a display screen driving signal and outputting the display screen driving signal to the detection device; and the detection device is used for carrying out pixel comparison on image data in the test image signal and the display screen driving signal, and determining a detection result of the mainboard to be detected based on a pixel comparison result. Based on the device, the test precision, efficiency and consistency of the display control panel can be effectively improved, the uncertainty caused by manual intervention is reduced, the test cost is reduced, and the device has high universality and adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment detection, and in particular to a detection system for a display control panel and a method, equipment, medium and program product thereof. Background Art

[0002] During the inspection of display control panels, due to the wide variety of output resolutions of display control panels and the lack of consistency in output interfaces, different cables and LCD screens need to be equipped for different types of control panels during the inspection operation, resulting in a huge waste of resources. In addition, each new specification of display control panel may require the purchase of new matching hardware, increasing the inspection cost.

[0003] At present, in the inspection process of display control boards, inspectors mostly rely on visual inspection to determine whether the display control boards are working properly. This subjective judgment method has obvious limitations. When the motherboard to be tested has poor welding or slight display abnormalities, these subtle problems are usually difficult to effectively identify with the human eye. Slight color deviations, short-term flickering, or local display distortion may be ignored during manual visual inspection, causing defective control boards to be misjudged as qualified products, thereby affecting product quality. The differences in resolution and output interfaces of different motherboards to be tested require that the detection device be equipped with LCD screens of different specifications, which not only increases the equipment cost, but also requires extra time to replace and adjust the LCD screen when replacing the motherboard to be tested for testing, reducing the detection efficiency.

[0004] Therefore, how to achieve efficient and low-cost detection of display control panels has become an urgent problem to be solved. Summary of the invention

[0005] The present invention provides a detection system for a display control panel and a method, device, medium and program product thereof, which are used to solve the defects of low detection efficiency and high cost of display control panels in the prior art and realize efficient and low-cost detection of display control panels.

[0006] The present invention provides a detection system for a display control panel, comprising: a test host, a mainboard to be tested connected to the test host, and a detection device, wherein the mainboard to be tested is connected to the detection device; the mainboard to be tested comprises a display screen driving module; The test host is used to output a test image signal to the mainboard to be tested and the detection device respectively; The mainboard to be tested is used to convert the test image signal into a display screen drive signal based on the display screen drive module, and output the display screen drive signal to the detection device; The detection device is used to perform pixel comparison on the test image signal and the image data in the display screen drive signal, and determine the detection result of the mainboard to be tested based on the pixel comparison result.

[0007] According to a detection system of a display control panel provided by the present invention, the detection device comprises an image comparison module, and a first image receiving module and a second image receiving module connected to the image comparison module; The first image receiving module is used to receive the display screen driving signal and send the display screen driving signal to the image comparing module; The second image receiving module is used to receive the test image signal output by the test host and send the test image signal to the image comparison module; The image comparison module is used to extract the first image data from the display screen drive signal and the second image data from the test image signal, and perform pixel comparison on the first image data and the second image data; if the pixels of the first image data and the second image data are consistent, it is determined that the motherboard to be tested has passed the inspection; if the pixels of the first image data and the second image data are inconsistent, the difference pixels are marked.

[0008] According to a detection system for a display control panel provided by the present invention, the detection system for the display control panel further includes a fault analysis module for: Determining an abnormality in the displayed image according to the pixel comparison result; If the display screen abnormality is a black screen, it is determined that the internal power supply of the mainboard to be tested is short-circuited or poorly welded, or the internal signal decoding input terminal of the mainboard to be tested is short-circuited or poorly welded; If the abnormal problem of the display screen is that there are flickering color dots on the display screen, it is determined that there is a cold solder joint at the internal signal decoding end of the tested mainboard, or there is a cold solder joint at the output end of the display screen driving module; If the abnormal display screen problem is that the display screen has color abnormality, it is determined that a short circuit problem exists at the internal signal decoding end, or a short circuit problem exists at the output end of the display screen driving module.

[0009] According to a display control board detection system provided by the present invention, the detection device further comprises a test image generation module, and the test image generation module is respectively connected to the mainboard to be tested and the image comparison module; The test image generating module is used to generate the test image signal.

[0010] According to a detection system for a display control board provided by the present invention, the mainboard to be tested further includes a power module; the detection device further includes a power receiving module and a voltage comparison module; The power supply module is used to send the power supply information of the mainboard to be tested to the power supply receiving module; The power receiving module is used to receive the power information sent by the power module and forward the power information to the voltage comparison module; The voltage comparison module is used to obtain the power supply voltage of the motherboard to be tested from the power supply information, and compare the power supply voltage with a preset voltage. If the comparison result is that the power supply voltage is abnormal, it is determined that the internal power supply welding of the motherboard to be tested is short-circuited or poorly welded.

[0011] According to a detection system for a display control panel provided by the present invention, the detection system for the display control panel further includes a display; The display is used to display the pixel comparison result and image information output by the detection device.

[0012] The present invention also provides a detection method for a display control panel, comprising the following modules: Receive a display screen drive signal sent by the mainboard to be tested and a test image signal sent by the test host; the display screen drive signal is obtained by performing signal conversion on the test image signal; Performing pixel comparison on the test image signal and image data in the display screen drive signal; The detection result of the mainboard to be tested is determined based on the pixel comparison result.

[0013] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the detection method for the display control panel described in any one of the above is implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the detection method of the display control panel as described in any one of the above is implemented.

[0015] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any of the above-mentioned display control panel detection methods.

[0016] The present invention provides a detection system for a display control panel and its method, device, medium and program product, the system includes a test host and a mainboard to be tested and a detection device connected to the test host; the mainboard to be tested includes a display screen driver module; the test host is used to output a test image signal to the mainboard to be tested and the detection device respectively; the mainboard to be tested is used to convert the test image signal into a display screen drive signal based on the display screen driver module, and output the display screen drive signal to the detection device; the detection device is used to compare the image data in the test image signal and the display screen drive signal, and determine the detection result of the mainboard to be tested based on the pixel comparison result. Based on the above device, the test accuracy, efficiency and consistency of the display control panel can be effectively improved, the uncertainty caused by manual intervention can be reduced, the test cost can be reduced, and it has strong versatility and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is one of the structural schematic diagrams of the detection system of the display control panel provided by the present invention.

[0019] Figure 2 This is the second structural schematic diagram of the detection system of the display control panel provided by the present invention.

[0020] Figure 3 It is a flow chart of the detection method of the display control panel provided by the present invention.

[0021] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Combine the following Figure 1-Figure 4 The present invention describes a detection system for a display control panel and its method, device, medium and program product.

[0024] Figure 1It is one of the structural schematic diagrams of the detection system of the display control panel provided by the present invention, such as Figure 1 As shown, the system includes: a test host and a mainboard to be tested and a detection device connected to the test host, wherein the mainboard to be tested is connected to the detection device; the mainboard to be tested includes a display screen driving module; the test host is used to output a test image signal to the mainboard to be tested and the detection device respectively; the mainboard to be tested is used to convert the test image signal into a display screen driving signal based on the display screen driving module, and output the display screen driving signal to the detection device; the detection device is used to perform pixel comparison on the image data in the test image signal and the display screen driving signal, and determine the detection result of the mainboard to be tested based on the pixel comparison result.

[0025] It is understandable that the test host plays the role of a signal source in the display control board detection system, and is mainly responsible for generating and outputting test image signals to provide input signals for subsequent detection. Specifically, the test subject outputs two identical test image signals, one of which is output to the motherboard to be tested, and the other is output to the detection device. Among them, the test image signal can be understood as an original signal output by the test host for generating display content, which contains various information required for image display, such as pixel color, position, display timing and other information.

[0026] The motherboard to be tested refers to the display control board to be tested; the motherboard to be tested includes a signal decoding module and a display screen driver module (such as a liquid crystal screen driver module), wherein the signal decoding module is used to decode a test image signal output by the test host, and output the decoded signal to the display screen driver module; the display screen driver module is used to perform signal conversion on the decoded signal to obtain a display screen drive signal.

[0027] The main function of the display drive signal is to drive the display device to display images. The display drive signal contains a series of instructions to control the state of each pixel on the display, such as the brightness and color (in a color display) of the pixel, as well as the update order and time of the pixel. Taking the liquid crystal display as an example, the display drive signal needs to accurately control the arrangement of liquid crystal molecules to change the transmission and blocking of light, so as to achieve the brightness and color changes of different pixels; if it is other types of display screens (such as organic light-emitting diode display screens, OLED), the display drive signal needs to complete the control of the pixel light-emitting state.

[0028] The detection device is mainly used to detect the motherboard to be tested. Specifically, the detection device receives a test image signal output by the test host and a display screen drive signal output by the motherboard to be tested; then, the image data is extracted from the test image signal and the display screen drive signal, respectively, and the extracted image data is compared pixel by pixel. Among them, pixel-by-pixel comparison refers to comparing each corresponding pixel in the two images. Assume that the image data extracted from the test image signal is image A, and the image data extracted from the display screen drive signal is image B. For each pixel in image A and image B (assuming that the pixel with coordinates (x, y) in image A corresponds to the pixel with coordinates (x, y) in image B), compare their pixel values.

[0029] The test result of the motherboard to be tested is determined based on the pixel comparison result. The test result may include a black screen, flickering dots, abnormal colors, etc. The detection system of the display control board provided by the embodiment of the present invention includes a test host and a mainboard to be tested and a detection device connected to the test host, wherein the mainboard to be tested is connected to the detection device; the mainboard to be tested includes a display screen driver module; the test host is used to output a test image signal to the mainboard to be tested and the detection device respectively; the mainboard to be tested is used to convert the test image signal into a display screen drive signal based on the display screen driver module, and output the display screen drive signal to the detection device; the detection device is used to compare the image data in the test image signal and the display screen drive signal by pixels, and determine the detection result of the mainboard to be tested based on the pixel comparison result. Based on the above device, the test accuracy, efficiency and consistency of the display control board can be effectively improved, the uncertainty caused by manual intervention can be reduced, the test cost can be reduced, and it has strong versatility and adaptability.

[0030] In one embodiment, the detection device includes an image comparison module, and a first image receiving module and a second image receiving module connected to the image comparison module; the first image receiving module is used to receive a display screen drive signal and send the display screen drive signal to the image comparison module; the second image receiving module is used to receive a test image signal output by a test host and send the test image signal to the image comparison module; the image comparison module is used to extract first image data from the display screen drive signal and extract second image data from the test image signal, and perform pixel comparison on the first image data and the second image data; if the pixels of the first image data and the second image data are consistent, it is determined that the mainboard to be tested has passed the inspection; if the pixels of the first image data and the second image data are inconsistent, the difference pixels are marked.

[0031] Specifically, when comparing the first image data and the second image data pixel by pixel, if all corresponding pixels are consistent, it means that there is no problem with the display output of the tested motherboard, and the tested motherboard can be determined to have passed the test. If there is a pixel inconsistency, it means that there is a difference in the display output of the tested motherboard, and these difference pixels need to be marked (such as by outputting red pixel values ​​or other eye-catching pixel values ​​to mark them) for further analysis and problem location.

[0032] For example, suppose that both image A and image B are 8-bit grayscale images (pixel values ​​range from 0 to 255). At coordinate (0, 0), the pixel value of image A is 100 and the pixel value of image B is 100. Since 100=100, the two pixels are consistent, so the original pixel value 100 is output. At coordinate (1, 1), the pixel value of image A is 150 and the pixel value of image B is 160. Since 150≠160, the two pixels are inconsistent, so the red pixel value is output (assuming that red is represented by 255 in this case).

[0033] For color images (such as RGB images), you need to compare the values ​​of the three channels R (red), G (green), and B (blue). For example, at a certain coordinate: The pixel RGB value of image A is (100, 50, 20), and the pixel RGB value of image B is (100, 50, 20). The two pixels are consistent, and the original pixel value is output (100, 50, 20). If the pixel RGB value of image A is (100, 50, 20) and the pixel RGB value of image B is (120, 50, 20), the red channel value is inconsistent. According to the rule, the red pixel value may be output, for example (255, 50, 20).

[0034] The embodiment of the present invention can accurately detect the difference between the two images by comparing the two pixels one by one, so as to judge whether the mainboard to be tested has display abnormalities and other problems. In addition, by comparing the image data from two sources, it can effectively detect whether the mainboard to be tested has display abnormalities, thereby improving the accuracy and efficiency of the detection.

[0035] In one embodiment, the detection system of the display control panel further includes a fault analysis module for: According to the pixel comparison result, the abnormal problem of the display picture is determined; if the abnormal problem of the display picture is a black screen, it is determined that the internal power supply welding of the tested mainboard is short-circuited or poorly welded, or the internal signal decoding input terminal of the tested mainboard is short-circuited or poorly welded; if the abnormal problem of the display picture is flickering color dots on the display screen, it is determined that there is a cold solder joint at the internal signal decoding terminal of the tested mainboard, or there is a cold solder joint at the output terminal of the display screen driver module; if the abnormal problem of the display picture is color abnormality on the display screen, it is determined that there is a short circuit problem at the internal signal decoding terminal, or there is a short circuit problem at the output terminal of the display screen driver module.

[0036] Specifically, if the display screen abnormality is a black screen, it can be determined that the internal power supply welding of the board is short-circuited or poorly welded, or the internal signal decoding input terminal of the board is poorly welded or short-circuited. For example, if the pixel comparison result shows that the entire image is black (that is, all pixel values ​​are 0 or close to 0), it may be because there is a problem with the welding of the internal signal decoding input terminal of the board, resulting in the inability to correctly decode the input signal, resulting in a black screen. At this time, you can focus on checking the welding condition of the signal decoding input terminal.

[0037] If the display screen abnormality is that there are flickering colored dots on the display screen, it can be determined that there is a poor solder joint at the signal decoding end inside the board, or there is a poor solder joint at the output end of the signal driver module inside the board. For example, if the pixel comparison result shows that some colored dots appear randomly in the image (the pixel values ​​of these dots are greatly different from the surrounding pixel values), and these colored dots flicker on the screen, this may be due to a poor solder joint at the signal decoding end inside the board. A poor solder joint will cause unstable signal transmission, which will appear as flickering colored dots on the image.

[0038] If the display screen abnormality is that the display screen has abnormal colors, it can be determined that there is a short circuit at the internal signal decoding end of the board, or a short circuit at the output end of the internal signal driver module of the board. For example, if the pixel comparison result shows that the color of some areas in the image is abnormal (for example, red turns green, or the color becomes dim), this may be because there is a short circuit or poor soldering at the internal signal decoding end of the board or the output end of the signal driver module. These problems will cause signal transmission errors, which will affect the color display of the image.

[0039] The embodiment of the present invention can preliminarily determine the possible fault type of the motherboard to be tested through the pixel comparison result, and then further investigate and determine the specific fault cause in combination with the cause location in the fault analysis method, thereby improving the accuracy and efficiency of detection.

[0040] In one embodiment, the detection device further includes a test image generation module, which is connected to the mainboard to be tested and the image comparison module respectively; the test image generation module is used to generate a test image signal.

[0041] It can be understood that, in addition to being generated by the test host, the test image signal can also be generated by a test image generation module in the detection device.

[0042] The test image generation module can generate specific test image signals according to the detection requirements. For example, it can generate test images with different resolutions and different color modes, which can be used to more flexibly perform comprehensive detection of the motherboard to be tested and improve detection efficiency. Since the test image generation module is part of the detection device, the test image signal it generates is more stable. Compared with the external test host, it reduces the signal fluctuation problem caused by external environmental interference, making the detection result more reliable.

[0043] The test image generation module generates a test image signal and directly outputs the signal to the mainboard to be tested and the image comparison module. After receiving the test image signal, the mainboard to be tested generates a display screen drive signal. The first image receiving module receives the display screen drive signal, and then the image comparison module performs a pixel-by-pixel comparison. The image comparison module performs a pixel-by-pixel comparison based on the two received signals (display screen drive signal and test image signal). The result is converted into a universal display interface signal through the image output module, and the test result is viewed on a universal display. The whole process is similar to the original detection device, but the signal source is optimized.

[0044] Optionally, when a test host is deployed in the detection system of the display control panel and a test image generation module is provided in the detection device, the test host or the test image generation module can be selected to generate a test image signal according to detection requirements.

[0045] In one embodiment, reference Figure 3 After adding the test image generation module to the detection device, there is no need to deploy a test host in the detection system of the display control board. At the same time, the detection device does not need to set up a second image receiving module, because the test image generation module can directly output the test image signal to the image comparison module. It can be understood that the test host is not deployed in the detection system of the display control board, which means that the structure of the entire detection device is simplified and the dependence on external equipment (test host) is reduced. For example, in some production environments, there is no need to prepare an additional test host, which reduces equipment costs and management complexity. On the other hand, the connection points and possible fault links in the signal transmission process are reduced, for example, signal transmission problems caused by poor connection between the test host and the motherboard to be tested are reduced.

[0046] The embodiment of the present invention can optimize the structure of the detection device and improve the efficiency and stability of detection by adding a test image generating module to the detection device.

[0047] In one embodiment, the motherboard to be tested also includes a power supply module; the detection device also includes a power supply receiving module and a voltage comparison module; the power supply module is used to send power supply information of the motherboard to be tested to the power supply receiving module; the power supply receiving module is used to receive the power supply information sent by the power supply module and forward the power supply information to the voltage comparison module; the voltage comparison module is used to obtain the power supply voltage of the motherboard to be tested from the power supply information, and compare the power supply voltage with the preset voltage. If the comparison result is that the power supply voltage is abnormal, it is determined that the internal power supply welding of the motherboard to be tested is short-circuited or poorly welded.

[0048] Specifically, the power module is located on the motherboard to be tested, and its function is to generate and output power information, which may include voltage-related information (such as supply voltage value, voltage fluctuation), current-related information (such as output current value, current stability), output power, etc. The power receiving module is responsible for receiving the power information from the power module and passing it to the voltage comparison module. The voltage comparison module extracts the supply voltage from the received power information and compares it with the preset voltage, where the preset voltage is a standard value that indicates the supply voltage range that the motherboard to be tested should have when it is working normally.

[0049] After the voltage comparison module makes a comparison, if it is found that the power supply voltage is not within the preset normal range (i.e., the power supply voltage is abnormal), it can be determined that the power supply welding inside the board is short-circuited or poorly welded. For example, if during the detection process, the pixel values ​​output by the image comparison module are found to be abnormal in certain areas (e.g., a large area of ​​black or color distortion), and other detection methods (such as voltage measurement) find that the power supply voltage is not within the normal range, it can be determined that the power supply voltage is abnormal due to the power supply welding problem inside the board.

[0050] The embodiment of the present invention realizes automatic operation through a power receiving module and a voltage comparison module. The power receiving module is responsible for receiving power information, and the voltage comparison module is responsible for comparing voltages. There is no need for manual complex voltage measurement and judgment, thereby improving the accuracy and efficiency of detection.

[0051] In one embodiment, the detection system of the display control panel further includes a display; the display is used to display the pixel comparison result and image information output by the detection device.

[0052] Specifically, the detection device also includes a voltage output module and an image output module connected to the display, wherein the voltage output module outputs the voltage comparison result to the display; and the image output module outputs the pixel comparison result and image information to the display. The image information refers to the processed image data. For example, if the pixel comparison result is that all pixels are consistent, the original image content is displayed; if the pixel comparison result is that there are inconsistent pixels, the displayed image can be an image with a mark (such as inconsistent pixel color change), so that the user can see the original image and the difference.

[0053] The image output module mainly plays a conversion role. It receives the pixel comparison results and image information (original image data or image data after marking difference pixels) from the image comparison module. Then, it converts this information into a universal display interface signal, where the universal display interface signal includes HDMI (High-DefinitionMultimedia Interface), DP (DisplayPort) or DVI (Digital Visual Interface).

[0054] The comparison results can be seen on the display. For example, the area with inconsistent pixels can be highlighted in some way, such as marking the inconsistent pixels in red, so that the user can intuitively see the abnormal area. Alternatively, the comparison results can be displayed with text information such as "pass" or "fail". For complex test situations, statistical information can be displayed, such as the number and ratio of inconsistent pixels, to help users have a more comprehensive understanding of the display conditions of the motherboard under test.

[0055] The embodiment of the present invention can intuitively display the comparison result and image information on a general display by converting signals and adapting resolution, so that users can conveniently view and analyze the display status of the motherboard to be tested.

[0056] Figure 3 is a flow chart of the detection method of the display control panel provided by the present invention, such as Figure 3 As shown, the method includes: Step 301, receiving a display screen drive signal sent by a mainboard to be tested and a test image signal sent by a test host; the display screen drive signal is obtained by performing signal conversion on the test image signal; Step 302, performing pixel comparison on the test image signal and the image data in the display screen drive signal; Step 303: Determine the detection result of the mainboard to be tested based on the pixel comparison result.

[0057] Taking the detection of a display control board (the main board to be tested) for a computer monitor as an example, the detection method of the above display control board is analyzed and explained. The display control board supports multiple resolution outputs and different interface types. The test host is configured with corresponding image generation software and can output various standard test image signals.

[0058] The test host sends a full-color test image signal with a resolution of 1920×1080 through its graphics card and related interfaces (such as the DP interface). The image content is a colorful landscape picture, including elements such as blue sky, green trees, and red flowers. Each pixel has a corresponding RGB (red, green, and blue) color value to constitute the color information of the entire image.

[0059] After the motherboard under test receives the test image signal from the test host, it will perform a series of processing and signal conversion on the signal according to its own circuit design and functional logic (such as converting digital signals to analog signals, adapting the display parameters of the monitor, etc.), and finally generate a display driving signal.

[0060] The detection device extracts image data from the received display screen drive signal and test image signal respectively. For example, after parsing the display screen drive signal, a two-dimensional pixel matrix is ​​obtained, and each element corresponds to the RGB value of a pixel, indicating the color that the pixel should display on the display screen; similarly, a two-dimensional pixel matrix of the same format is also parsed from the test image signal. Starting from the first pixel in the upper left corner, the RGB value of the pixel in the test image signal is assumed to be (200, 100, 50), indicating an orange color, and the RGB value of the pixel corresponding to the display screen drive signal is also (200, 100, 50), then the two pixels are consistent, and the next pixel is compared. However, when comparing the pixel corresponding to a certain red flower position in the image, the RGB value of the pixel in the test image signal is (255, 0, 0), indicating pure red, and the RGB value of the pixel corresponding to the display screen drive signal is (200, 0, 0), indicating dark red, which results in pixel inconsistency. At this time, the inconsistent pixel will be marked (such as marked with other eye-catching colors or special symbols, etc.), and then all pixels will be compared one by one.

[0061] If after comparing all the pixels of the entire image, it is found that the vast majority of pixels (such as more than 99.9% of the pixels) are consistent, and only a very small number of pixels have slight differences due to some acceptable error ranges (such as slight interference during signal transmission, etc.), then the test result of the motherboard to be tested can be determined to be passed, indicating that the display control board can basically work normally and accurately process and convert the image signals sent by the test host.

[0062] However, if a large number of pixels are found to be inconsistent during the comparison process, such as more than 10% of the pixels have different RGB values, and there are many obvious problems such as color distortion and image deformation on the screen, it means that the motherboard to be tested may be faulty. There may be a problem with the internal signal decoding chip, resulting in inaccurate conversion of the test image signal; or some circuit solder joints have cold soldering or short circuits, which affect the normal transmission and processing of the signal, and thus cause a large deviation between the display drive signal and the test image signal. In this case, the motherboard to be tested is determined to have failed the inspection and needs to be further repaired and checked to determine the specific fault point and repair it.

[0063] The detection method of the display control board provided by the embodiment of the present invention receives the display screen drive signal sent by the mainboard to be tested and the test image signal sent by the test host; the display screen drive signal is obtained after signal conversion of the test image signal; pixel comparison is performed on the image data in the test image signal and the display screen drive signal; and the detection result of the mainboard to be tested is determined based on the pixel comparison result. Based on the above method, the test accuracy, efficiency and consistency of the display control board can be effectively improved, the uncertainty caused by manual intervention can be reduced, the test cost can be reduced, and it has strong versatility and adaptability.

[0064] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the detection method of the display control board, the method comprising: receiving a display screen drive signal sent by the mainboard to be tested and a test image signal sent by the test host; the display screen drive signal is obtained by signal conversion of the test image signal; pixel comparison is performed on the image data in the test image signal and the display screen drive signal; and the detection result of the mainboard to be tested is determined based on the pixel comparison result.

[0065] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0066] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the detection method of the display control board provided by the above-mentioned methods, and the method includes: receiving a display screen drive signal sent by a mainboard to be tested, and a test image signal sent by a test host; the display screen drive signal is obtained after signal conversion of the test image signal; performing pixel comparison on the image data in the test image signal and the display screen drive signal; and determining the detection result of the mainboard to be tested based on the pixel comparison result.

[0067] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the detection method of the display control board provided by the above-mentioned methods, the method comprising: receiving a display screen drive signal sent by a mainboard to be tested, and a test image signal sent by a test host; the display screen drive signal is obtained after signal conversion of the test image signal; performing pixel comparison on the image data in the test image signal and the display screen drive signal; and determining the detection result of the mainboard to be tested based on the pixel comparison result.

[0068] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0069] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detection system for a display control panel, characterized in that: include: A test host, a mainboard to be tested and a detection device connected to the test host, wherein the mainboard to be tested is connected to the detection device; The mainboard to be tested includes a display screen driving module; The test host is used to output a test image signal to the mainboard to be tested and the detection device respectively; The mainboard to be tested is used to convert the test image signal into a display screen drive signal based on the display screen drive module, and output the display screen drive signal to the detection device; The detection device is used to perform pixel comparison on the test image signal and the image data in the display screen drive signal, and determine the detection result of the mainboard to be tested based on the pixel comparison result.

2. The detection system according to claim 1, characterized in that: The detection device comprises an image comparison module, and a first image receiving module and a second image receiving module connected to the image comparison module; The first image receiving module is used to receive the display screen driving signal and send the display screen driving signal to the image comparing module; The second image receiving module is used to receive the test image signal output by the test host and send the test image signal to the image comparison module; The image comparison module is used to extract first image data from the display screen driving signal and second image data from the test image signal, and perform pixel comparison on the first image data and the second image data; If the pixels of the first image data and the second image data are consistent, it is determined that the mainboard to be tested has passed the test; if the pixels of the first image data and the second image data are inconsistent, the difference pixels are marked.

3. The detection system of the display control panel according to claim 1 or 2, characterized in that: The detection system of the display control panel also includes a fault analysis module, which is used to: Determining an abnormality in the displayed image according to the pixel comparison result; If the display screen abnormality is a black screen, it is determined that the internal power supply of the mainboard to be tested is short-circuited or poorly welded, or the internal signal decoding input terminal of the mainboard to be tested is short-circuited or poorly welded; If the abnormal problem of the display screen is that there are flickering color dots on the display screen, it is determined that there is a cold solder joint at the internal signal decoding end of the tested mainboard, or there is a cold solder joint at the output end of the display screen driving module; If the abnormal display screen problem is that the display screen has color abnormality, it is determined that a short circuit problem exists at the internal signal decoding end, or a short circuit problem exists at the output end of the display screen driving module.

4. The detection system of the display control panel according to claim 2, characterized in that: The detection device further comprises a test image generation module, wherein the test image generation module is respectively connected to the mainboard to be tested and the image comparison module; The test image generating module is used to generate the test image signal.

5. The detection system of the display control panel according to claim 1, characterized in that: The mainboard to be tested also includes a power module; the detection device also includes a power receiving module and a voltage comparison module; The power supply module is used to send the power supply information of the mainboard to be tested to the power supply receiving module; The power receiving module is used to receive the power information sent by the power module and forward the power information to the voltage comparison module; The voltage comparison module is used to obtain the power supply voltage of the motherboard to be tested from the power supply information, and compare the power supply voltage with a preset voltage. If the comparison result is that the power supply voltage is abnormal, it is determined that the internal power supply welding of the motherboard to be tested is short-circuited or poorly welded.

6. The detection system for a display control panel according to any one of claims 1 to 5, characterized in that: The detection system of the display control panel also includes a display; The display is used to display the pixel comparison result and image information output by the detection device.

7. A method for detecting a display control panel, characterized in that: The detection device used in the detection system of the display control panel according to any one of claims 1 to 6 comprises: Receive a display screen drive signal sent by the mainboard to be tested and a test image signal sent by the test host; the display screen drive signal is obtained by signal conversion of the test image signal; Performing pixel comparison on the test image signal and the image data in the display screen drive signal; The detection result of the mainboard to be tested is determined based on the pixel comparison result.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the detection method of the display control panel as claimed in claim 7 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the detection method of the display control panel as claimed in claim 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the detection method of the display control panel as claimed in claim 7 is implemented.

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