Board card testing method and system based on visual analysis

Abstract

The invention provides a board card testing method and system based on visual analysis. The board card testing method based on visual analysis comprises the steps that image information and video signal information of a to-be-tested drive board are acquired respectively; comparing the image information with preset image information to obtain a first comparison result, and comparing the video signal information with preset video signal information to obtain a second comparison result; and outputting a test result of the to-be-tested driver board based on the first comparison result and the second comparison result. According to the invention, the to-be-tested drive board can be automatically tested, the test efficiency is improved, and the test accuracy is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drive board testing, and particularly relates to a board testing method and system based on visual analysis. BACKGROUND

[0002] With the rapid development of liquid crystal display technology, liquid crystal screens are becoming more and more popular. The testing method of the drive board of the traditional liquid crystal screen is mainly artificial visual inspection, that is, a tester observes the screen display effect, and then judges whether the test is passed or not. However, the artificial visual inspection has low testing efficiency, and is prone to fatigue missed detection, that is, when the working time of the tester reaches a certain degree, fatigue will lead to missed detection, reducing the accuracy of the test result. SUMMARY

[0003] The present application provides a board testing method and system based on visual analysis, aiming to solve the problem of low testing efficiency and poor accuracy of the current drive board testing method.

[0004] In a first aspect, the present application provides a board testing method based on visual analysis, applied to a testing system, which comprises: obtaining image information and video signal information of a drive board to be tested respectively; comparing the image information with preset image information to obtain a first comparison result, and comparing the video signal information with preset video signal information to obtain a second comparison result; outputting a test result of the drive board to be tested based on the first comparison result and the second comparison result.

[0005] In a second aspect, the present application further provides a testing system, which comprises a host computer, a connection module, a display module, a video signal acquisition module and an image acquisition module; the host computer is configured with the board testing method based on visual analysis of any one of the above; the connection module is used to connect with a drive board to be tested; the display module is connected with the connection module, and is used to display the image of the drive board to be tested; the video signal acquisition module is connected with the connection module, and is used to obtain video signal information of the drive board to be tested; the image acquisition module is connected with the host computer, and is used to acquire the image of the display module to obtain image information.

[0006] Further, the connection module comprises a signal adapter plate, an input end of the signal adapter plate is connected with the drive board to be tested, one output end of the signal adapter plate is connected with the display module, and the other output end of the signal adapter plate is connected with the video signal acquisition module.

[0007] Further, the connection module comprises a signal switch, an input end of the signal switch is connected with the to-be-tested drive board, one output end of the signal switch is connected with the display module, and another output end of the signal switch is connected with the video signal acquisition module.

[0008] The test system disclosed by the application comprises a host computer, a connection module, a display module, a video signal acquisition module and an image acquisition module, the host computer is configured with a board card test method based on visual analysis, the method comprises the following steps: acquiring image information and video signal information of a to-be-tested drive board respectively; comparing the image information with preset image information to obtain a first comparison result, and comparing the video signal information with preset video signal information to obtain a second comparison result; and outputting a test result of the to-be-tested drive board based on the first comparison result and the second comparison result. The embodiment of the application can obtain a first comparison result by comparing image information with preset image information, and obtain a second comparison result by comparing video signal information with preset video signal information, and then output a test result based on the first comparison result and the second comparison result, so that the to-be-tested drive board can be tested automatically, the test efficiency is improved, and the test accuracy is relatively high. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0010] Figure 1 is a flow chart of the board card test method based on visual analysis provided by an embodiment of the application; Figure 2 is a first sub-flow chart of the board card test method based on visual analysis provided by an embodiment of the application; Figure 3 is a second sub-flow chart of the board card test method based on visual analysis provided by an embodiment of the application; Figure 4 is a third sub-flow chart of the board card test method based on visual analysis provided by an embodiment of the application; Figure 5 is a block schematic diagram of the test system provided by an embodiment of the application; Figure 6 is a first connection mode schematic diagram of the test system provided by an embodiment of the application; Figure 7 is a second connection mode schematic diagram of the test system provided by an embodiment of the application. DETAILED DESCRIPTION

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, operations, elements, components and / or collections thereof.

[0013] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0014] Furthermore, the directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying drawings and the product's usage state. Therefore, the directional terms used are for illustrating and understanding this invention, and not for limiting it. Additionally, in the accompanying drawings, structures that are similar or identical are indicated by the same reference numerals.

[0015] See Figure 1 , Figure 1 This is a flowchart of a vision-based board testing method provided by the present invention. This method can be applied to a testing system to test driver boards under test, improving testing efficiency and accuracy. Figure 1 As shown, the board testing method based on visual analysis includes steps S110-S130.

[0016] S110 acquires the image information and video signal information of the driver board under test, respectively.

[0017] In this embodiment of the invention, the testing system may include a host computer, a connection module, a display module, a video signal acquisition module, and an image acquisition module. The host computer is connected to both the image acquisition module and the video signal acquisition module, and can acquire image information through the image acquisition module and video signal information through the video signal acquisition module.

[0018] The video signal acquisition module connects to the connection module to receive the raw video electronic signal output from the driver board under test, and then converts the raw video electronic signal into a format that can be parsed by the host computer. In addition, since the raw video electronic signal output by the driver board under test may contain noise, interference (especially high-speed signals), or the signal format may be incompatible with the test system, the video signal acquisition module can also preprocess the signal to ensure that the signal can be accurately analyzed by the test system. For example, it filters out high-frequency interference in the raw signal (such as signal glitches caused by power fluctuations) to avoid noise affecting the accuracy of subsequent parameter comparisons; and it performs jitter attenuation on timing-sensitive signals (such as pixel clocks and synchronization signals) to restore the true timing characteristics of the signal and avoid analysis errors caused by jitter.

[0019] The display module is also connected to the connection module and can display the image information output by the driver board under test. This image information can be acquired by the image acquisition module, which then sends the image information to the host computer. For example, the image acquisition module can be a camera, which can be a conventional camera or an AI camera.

[0020] The connection module connects to the driver board under test and is used to acquire the raw video electronic signal from the driver board under test, and then send the raw video electronic signal to the display module and the video signal acquisition module respectively. It can be understood that the connection module can send the raw video electronic signal synchronously or asynchronously; that is, it can send the raw video electronic signal to the display module and the video signal acquisition module simultaneously, or it can interleave the raw video electronic signal, such as sending the raw video electronic signal to the display module first, and then sending it to the video signal acquisition module. The specific sending method can be determined by the signal type of the raw video electronic signal.

[0021] S120, compare the image information with preset image information to obtain a first comparison result, and compare the video signal information with preset video signal information to obtain a second comparison result.

[0022] In this embodiment of the invention, after acquiring image information and video signal information, the host computer compares the video signal information with preset video signal information and compares the image information with preset image information to obtain a first comparison result and a second comparison result. The preset image information and preset video signal information are standard image information and standard video signal information of the driver board under test, which can be pre-stored in the host computer. Both the first comparison result and the second comparison result can include pass and fail; that is, when the video signal matches the preset video signal, the second comparison result is pass; when the image information matches the preset image information, the first comparison result is pass.

[0023] See Figure 2 In some embodiments, such as this embodiment, step S120 includes steps S121-S124.

[0024] S121, acquire the standard monochrome image and standard grayscale image of the image information, and acquire the preset standard monochrome image and preset standard grayscale image of the preset image information; S122, compare the standard monochrome image with the preset standard monochrome image, and compare the standard grayscale image with the preset standard grayscale image; S123, if the standard monochrome image is the same as the preset standard monochrome image, and the standard grayscale image is the same as the preset standard grayscale image, then the first comparison result is passed; S124, if the standard monochrome image is different from the preset standard monochrome image, or the standard grayscale image is different from the preset standard grayscale image, then the first comparison result is a failure.

[0025] Testers can define parameters for the ideal display effect based on the screen interface specifications of the driver board under test (such as the display driving capabilities of 8080 / RGB / MIPI interfaces) and the display characteristics of the display module (such as color gamut and grayscale levels). For example: Preset standard monochrome images: Red images must conform to pure red parameters under the sRGB color gamut (e.g., RGB value of 255,0,0) and have no noise points; Yellow images must conform to pure yellow parameters (RGB value of 255,255,0) and have uniform brightness across the entire screen (deviation ≤ ±5%); Blue images must conform to pure blue parameters (RGB value of 0,0,255) and have no blur at the edges.

[0026] Preset standard grayscale image: It must include preset grayscale levels (such as 32 levels, 64 levels or 256 levels and above), and the brightness difference between adjacent grayscale levels must be uniform (such as the brightness increasing by 5 cd / ㎡ per level) and without discontinuities (such as a continuous transition from level 0 <pure black> to level 255 <pure white>).

[0027] Baseline Image Library Construction: Based on the above parameters, the host computer will generate a preset standard monochrome image (one each for red, yellow, and blue, with resolution consistent with the display module) and a preset standard grayscale image (one grayscale level matching the output of the driver board under test) in digital format, and store them in the standard image library module. Simultaneously, the system will annotate each preset image with an allowable deviation threshold (e.g., color deviation ≤5%, grayscale band count = 0). This threshold is the core basis for subsequent determination of whether they are identical. If the display module model is changed or the test data of the driver board under test is adjusted (e.g., changing the grayscale level), the parameters of the preset standard images must be recalibrated to ensure that the baseline matches the actual test scenario.

[0028] Comparison between standard monochrome image and preset standard monochrome image Color parameter comparison: The host computer extracts the RGB values ​​of multiple sampling points (such as 9 evenly distributed points: the four corners, the center, and the midpoints of the four sides of the screen) from the standard monochrome image and compares them with the RGB values ​​of the corresponding sampling points in the preset standard monochrome image. For example, if the RGB value of a certain sampling point in the standard red image is 255,0,0, and the RGB value of the corresponding point in the actual standard red image is 250,5,3, the color deviation is calculated. If the deviation is within the threshold, the color parameter is qualified; if it exceeds the threshold, the color is determined to be inconsistent.

[0029] Display uniformity comparison: The host computer detects the brightness value of the entire screen of the standard monochrome image (such as by acquiring it through the brightness sensor of the image acquisition module) and compares it with the brightness distribution of the preset standard monochrome image. For example, the preset standard yellow image has a full-screen brightness of 300 cd / ㎡, with an allowable deviation of ±5% (i.e., 285-315 cd / ㎡). If the standard yellow image has a local brightness of 270 cd / ㎡ (below the lower limit), then the uniformity is judged to be inconsistent.

[0030] Edge integrity comparison: The host computer extracts the boundary contour of the standard monochrome image (e.g., a rectangle in the red image) using an edge detection algorithm (such as the Canny algorithm) and compares it with the boundary contour of the preset standard monochrome image. For example, the preset standard blue image is a rectangle that fills the entire screen without missing corners or stretching. If the standard blue image has a missing corner in the upper right corner (missing pixels) or is horizontally stretched (the aspect ratio changes from 16:9 to 18:9), then the edge integrity is determined to be inconsistent. It can be understood that all three types of monochrome images must be compared, and all three dimensions of each type of monochrome image must be qualified for the standard monochrome image to be considered the same as the preset standard monochrome image. If any dimension of any type of monochrome image is inconsistent (e.g., the red image has excessive color deviation, or the yellow image has substandard uniformity), then the two types of monochrome images are directly determined to be different.

[0031] Comparison between standard grayscale image and preset standard grayscale image Gray-scale gradient continuity comparison: The host computer extracts the gray-scale level sequence of the standard gray-scale image (such as a list of brightness values ​​for 256 gray-scale levels) and compares it with the level sequence of the preset standard gray-scale image. For example, the preset standard gray-scale image ranges from level 0 (brightness 0 cd / m²) to level 255 (brightness 500 cd / m²), with each level increasing in brightness by approximately 1.96 cd / m². If the standard gray-scale image shows a level 10 brightness of 19.6 cd / m² and a level 11 brightness of 23.5 cd / m² (skipping the expected 21.56 cd / m² for level 11, resulting in a gap), then the gradient continuity is deemed inconsistent. If the brightness increase of all levels conforms to the preset pattern, then the gradient is considered acceptable.

[0032] Same-level brightness consistency comparison: The host computer selects three typical gray levels (low level: 32 levels, mid level: 128 levels, high level: 224 levels) in the standard grayscale image and detects the brightness deviation of the entire screen for each level. It is compared with the same-level deviation requirement of the preset standard grayscale image. For example, the full-screen brightness deviation of the preset standard grayscale image 128 levels is ≤±8%. If the center brightness of the standard grayscale image 128 levels is 200cd / ㎡ and the edge brightness is 180cd / ㎡ (deviation of 10%, exceeding the threshold), then the same-level consistency is determined to be inconsistent.

[0033] Contrast compliance comparison: The host computer calculates the ratio of the highest brightness (255th level) to the lowest brightness (0th level) of the standard grayscale image (i.e., the actual contrast ratio) and compares it with the preset contrast ratio of the preset standard grayscale image (e.g., ≥500:1). For example, if the preset contrast ratio is ≥500:1, and the standard grayscale image has a 255th level brightness of 450 cd / m² and a 0th level brightness of 1 cd / m², the actual contrast ratio is 450:1 (lower than the preset), then the contrast ratio is determined to be non-compliant; if the actual contrast ratio is 550:1 (higher than the preset), then the contrast ratio is qualified.

[0034] For a standard grayscale image to be considered identical to a preset standard grayscale image, all three dimensions must be qualified. If any dimension is not qualified (such as gradient discontinuity or insufficient contrast), the two grayscale images are considered different.

[0035] See Figure 3 In some embodiments, such as in this embodiment, step S120 further includes steps S125-S128.

[0036] S125, acquire the electrical parameters and timing parameters of the video signal, and acquire the preset electrical parameters and preset timing parameters of the preset video signal information; S126, compare the electrical parameters with each other, and compare the timing parameters with the preset timing parameters; S127, if the electrical parameters are the same as the preset electrical parameters and the timing parameters are the same as the preset timing parameters, then the second comparison result is passed; S128, if the electrical parameters are different from the preset electrical parameters, or the timing parameters are different from the preset timing parameters, then the second comparison result is a failure.

[0037] In this embodiment of the invention, electrical parameters reflect the electrical characteristics of the signal, such as voltage and amplitude. The parameters of different interfaces differ significantly. The 8080 / RGB interface and the MIPI / LVDS / EDP interface are described below.

[0038] 8080 / RGB interface: Signal level amplitude (high level VOH, low level VOL, such as VOH standard ≥3.3V, VOL≤0.8V) and signal integrity (no glitches, overshoot / undershoot, such as high level overshoot ≤3.6V) need to be collected. MIPI / LVDS / EDP interface: It is necessary to collect differential signal amplitude (e.g., LVDS differential pair amplitude 200-400mV, MIPID-PHY differential amplitude 150-300mV), common mode voltage (e.g., LVDS common mode voltage 1.2V±0.2V), and signal attenuation (amplitude loss in high-speed signal transmission, e.g., EDP signal attenuation ≤10%).

[0039] Timing parameters reflect the time logic characteristics of a signal: 8080 / RGB interface: Requires acquisition of pixel clock cycle (e.g., 10ns, corresponding to 100MHz clock), data / address signal setup time (e.g., tsu≥2ns, i.e., trigger the clock after data is stable), and control signal (WR / RD) delay time (e.g., ≤1ns, to ensure synchronization with data signal). MIPI / LVDS / EDP interface: Signal jitter value (e.g., MIPI jitter ≤ 100ps, LVDS jitter ≤ 50ps), eye diagram parameters (eye height ≥ 150mV, eye width ≥ 50%UI, UI is the clock cycle), and frame synchronization timing (e.g., the delay between the EDP line synchronization signal and the data signal ≤ 2 clock cycles).

[0040] 8080 / RGB interface: Preset VOH≥3.3V (allowable deviation ±5%, i.e. 3.135-3.465V), VOL≤0.8V (allowable deviation ±5%, i.e. 0.76-0.84V), settling time tsu≥2ns (allowable deviation ±10%, i.e. ≥1.8ns); MIPI / LVDS / EDP interface: Preset LVDS differential amplitude 200-400mV (allowable deviation ±10%), MIPI jitter ≤100ps (allowable deviation ±5%), eye height ≥150mV (allowable deviation ±10%).

[0041] Electrical parameter comparison 8080 / RGB interface electrical parameter comparison: Level amplitude comparison: If the actual VOH = 3.2V (preset 3.3V ± 5%, i.e. 3.135-3.465V), the deviation is ≈3% (within the threshold), then the level amplitude is qualified; if the actual VOH = 3.0V (deviation ≈9%, exceeding the threshold), then it is unqualified; Signal integrity comparison: If the actual signal has a high-level overshoot of 3.7V (preset ≤3.6V) or a glitch lasting ≥1ns, the signal integrity is deemed unqualified.

[0042] Comparison of electrical parameters for MIPI / LVDS / EDP interfaces: Differential amplitude comparison: If the actual LVDS differential amplitude is 180mV (preset 200-400mV ± 10%, i.e. 180-440mV) and the deviation is 10% (within the threshold), then it is qualified; if the actual amplitude is 170mV (deviation = 15%, exceeding the threshold), then it is unqualified. Common-mode voltage comparison: If the actual LVDS common-mode voltage is 1.3V (preset 1.2V±0.2V, i.e. 1.0-1.4V), and the deviation is ≈8% (within the threshold), then it is qualified; if the actual voltage is 1.5V (exceeding the upper limit), then it is unqualified.

[0043] Timing parameter comparison 8080 / RGB interface timing parameter comparison: Setup time comparison: If the actual data signal setup time tsu = 1.9ns (preset ≥ 2ns ± 10%, i.e. ≥ 1.8ns), and the deviation ≈ 5% (within the threshold), then it is qualified; if the actual tsu = 1.7ns (exceeding the lower limit), then it is determined that the timing is mismatched. Control signal delay comparison: If the actual WR control signal delay is 1.2ns (preset ≤1ns±20%, i.e. ≤1.2ns) and the deviation is 20% (within the threshold), then it is qualified; if the delay is 1.3ns (exceeding the upper limit), then it is unqualified.

[0044] MIPI / LVDS / EDP interface timing parameter comparison: Jitter comparison: If the actual MIPI signal jitter is 105ps (preset ≤100ps±5%, i.e. ≤105ps) and the deviation is 5% (within the threshold), then it is acceptable; if the jitter is 110ps (exceeding the threshold), then it is unacceptable. Eye diagram parameter comparison: If the actual EDP signal eye height = 140mV (preset ≥150mV±10%, i.e. ≥135mV), the deviation ≈7% (within the threshold), and the eye width = 48%UI (preset ≥50%UI±5%, i.e. ≥47.5%UI), the deviation ≈5% (within the threshold), then it is qualified; if the eye height = 130mV (exceeding the lower limit), then it is unqualified.

[0045] S130, based on the first comparison result and the second comparison result, output the test result of the driver board under test.

[0046] In this embodiment of the invention, the first comparison result is a comparison between image information and preset image information, and the second comparison result is a comparison between video signal information and preset video signal information. The pass / fail status of the driver board under test can be determined based on these two results. For example, when both the first and second comparison results are passable, the test result of the driver board under test is considered passable.

[0047] See Figure 4 In some embodiments, such as in this embodiment, step S130 includes steps S131-S133.

[0048] S131, obtain the first comparison result and the second comparison result respectively; S132, if the first comparison result is passed and the second comparison result is passed, then the test result is passed; S133, if the first comparison result is a failure, or the second comparison result is a failure, then the test result is a failure.

[0049] In this embodiment of the invention, when both the first comparison result and the second comparison result are passed, the test result is passed and the driver board under test is qualified; when the first comparison result is passed and the second comparison result is failed, the test result is failed and the driver board under test is unqualified; when the first comparison result is failed and the second comparison result is passed, the test result is failed and the driver board under test is unqualified.

[0050] The board testing method based on visual analysis provided by this invention can obtain a first comparison result by comparing image information and preset image information, and obtain a second comparison result by comparing video signal information and preset video signal information. Then, the test result is output based on the first comparison result and the second comparison result. This method can not only automatically test the driver board under test, improving testing efficiency, but also has high testing accuracy.

[0051] See Figure 5 , Figure 5 This is a block diagram of a test system 100 provided in an embodiment of the present invention. Figure 1As shown, the test system 100 includes a host computer 10, a connection module 20, a display module 30, a video signal acquisition module 40, and an image acquisition module 50. The host computer 10 is configured with the board testing method based on visual analysis as described in any of the above embodiments. The connection module 20 is used to connect to the driver board 200 under test. The display module 30 is connected to the connection module 20 and is used to display the image of the driver board 200 under test. The video signal acquisition module 40 is connected to the connection module 20 and is used to acquire the video signal information of the driver board 200 under test. The image acquisition module 50 is connected to the host computer 10 and is used to acquire the image of the display module 30 to obtain image information.

[0052] Specifically, the test system 100 may include a host computer 10, a connection module 20, a display module 30, a video signal acquisition module 40, and an image acquisition module 50. The host computer 10 is connected to the image acquisition module 50 and the video signal acquisition module 40 respectively, and can acquire image information through the image acquisition module 50 and video signal information through the video signal acquisition module 40.

[0053] The video signal acquisition module 40 is connected to the connection module 20 and is used to receive the raw video electronic signal output by the driver board under test 200, and then convert the raw video electronic signal into a format that can be parsed by the host computer 10. In addition, since the raw video electronic signal output by the driver board under test 200 may contain noise, interference (especially high-speed signals), or the signal format may be incompatible with the test system 100, the video signal acquisition module 40 can also preprocess the signal to ensure that the signal can be accurately analyzed by the test system 100. For example, it can filter out high-frequency interference in the raw signal (such as signal glitches caused by power fluctuations) to avoid noise affecting the accuracy of subsequent parameter comparison; and it can perform jitter attenuation on time-sensitive signals (such as pixel clocks and synchronization signals) to restore the true timing characteristics of the signal and avoid analysis errors caused by jitter.

[0054] The display module 30 is also connected to the connection module 20 and can display the image information output by the driver board 200 under test. This image information can be acquired by the image acquisition module 50, which then sends the image information to the host computer 10. For example, the image acquisition module 50 can be a camera, which can be a conventional camera or an AI camera.

[0055] The connection module 20 is connected to the driver board 200 under test and is used to acquire the raw video electronic signal from the driver board 200 under test and send the raw video electronic signal to the display module 30 and the video signal acquisition module 40 respectively. It can be understood that the connection module 20 can send the raw video electronic signal synchronously or asynchronously; that is, it can send the raw video electronic signal to the display module 30 and the video signal acquisition module 40 simultaneously, or it can send the raw video electronic signal interleaved, such as sending the raw video electronic signal to the display module 30 first and then to the video signal acquisition module 40. The specific sending method can be determined by the signal type of the raw video electronic signal.

[0056] After acquiring image information and video signal information, the host computer 10 can compare the image information with preset image information to obtain a first comparison result, and compare the video signal information with preset video signal information to obtain a second comparison result, and output the test result based on the first comparison result and the second comparison result. For example, when both the first comparison result and the second comparison result are passed, the test result is passed, and the driver board 200 under test is qualified; when the first comparison result is passed but the second comparison result is failed, the test result is failed, and the driver board 200 under test is unqualified; when the first comparison result is failed but the second comparison result is passed, the test result is failed, and the driver board 200 under test is unqualified.

[0057] See Figure 6 As a further embodiment, the connection module 20 includes a signal adapter board, the input end of which is connected to the driver board 200 under test, one output end of which is connected to the display module 30, and the other output end of which is connected to the video signal acquisition module 40.

[0058] The signal adapter board is connected to the driver board 200 under test, the display module 30, and the video signal acquisition module 40 respectively, and can transmit signals synchronously. That is, the signal adapter board can simultaneously output the original video electronic signal to the display module 30 and the video signal acquisition module 40, and the host computer 10 can simultaneously compare the image information and the preset image information, as well as the video signal information and the preset video signal information.

[0059] See Figure 7 As a further embodiment, the connection module 20 includes a signal switch, the input terminal of which is connected to the driver board 200 under test, one output terminal of which is connected to the display module 30, and the other output terminal of which is connected to the video signal acquisition module 40.

[0060] The signal switches are connected to the driver board 200 under test, the display module 30, and the video signal acquisition module 40, respectively, and can transmit signals asynchronously. That is, when the signal switch is connected to the display module 30, the signal switch transmits the original video electronic signal to the display module 30, and when the signal switch is connected to the video signal acquisition module 40, the signal switch transmits the original video electronic signal to the video signal acquisition module 40.

[0061] The testing system disclosed in this invention can acquire image information through an image acquisition module and video signal information through a video signal acquisition module. The host computer obtains the test results by comparing the image information with preset image information and the video signal information with preset video signal information. This not only improves testing efficiency but also improves accuracy.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A board testing method based on visual analysis, characterized in that, Applied to a testing system, the method includes: Acquire the image information and video signal information of the driver board under test respectively; The image information is compared with preset image information to obtain a first comparison result, and the video signal information is compared with preset video signal information to obtain a second comparison result; The test results of the driver board under test are output based on the first comparison result and the second comparison result.

2. The method as described in claim 1, characterized in that, The step of comparing the image information with preset image information to obtain a first comparison result includes: Obtain a standard monochrome image and a standard grayscale image of the image information, and obtain a preset standard monochrome image and a preset standard grayscale image of the preset image information; The standard monochrome image is compared with the preset standard monochrome image, and the standard grayscale image is compared with the preset standard grayscale image. If the standard monochrome image is the same as the preset standard monochrome image, and the standard grayscale image is the same as the preset standard grayscale image, then the first comparison result is passed.

3. The method as described in claim 2, characterized in that, After the step of comparing the standard grayscale image with the preset standard grayscale image, the method further includes: If the standard monochrome image is different from the preset standard monochrome image, or the standard grayscale image is different from the preset standard grayscale image, then the first comparison result is a failure.

4. The method as described in claim 1, characterized in that, The step of comparing the video signal information with preset video signal information to obtain a second comparison result includes: Obtain the electrical parameters and timing parameters of the video signal, and obtain the preset electrical parameters and preset timing parameters of the preset video signal information; The electrical parameters are compared with each other, and the timing parameters are compared with the preset timing parameters. If the electrical parameters are the same as the preset electrical parameters, and the timing parameters are the same as the preset timing parameters, then the second comparison result is passed.

5. The method as described in claim 4, characterized in that, After the step of comparing the timing parameters with the preset timing parameters, the method further includes: If the electrical parameters are different from the preset electrical parameters, or the timing parameters are different from the preset timing parameters, then the second comparison result is a failure.

6. The method as described in claim 1, characterized in that, The step of outputting the test results of the driver board under test based on the first comparison result and the second comparison result includes: Obtain the first comparison result and the second comparison result respectively; If the first comparison result is passed and the second comparison result is passed, then the test result is passed.

7. The method as described in claim 1, characterized in that, After the steps of obtaining the first comparison result and the second comparison result respectively, the method further includes: If the first comparison result is a failure, or the second comparison result is a failure, then the test result is a failure.

8. A testing system, characterized in that, The testing system includes: A host computer, wherein the host computer is configured with a board testing method based on visual analysis as described in any one of claims 1-7; A connection module, which is used to connect to the driver board under test; The display module, which is connected to the connection module, is used to display an image of the driver board under test. A video signal acquisition module, which is connected to the connection module, is used to acquire the video signal information of the driver board under test; An image acquisition module, which is connected to the host computer, is used to acquire images from the display module to obtain image information.

9. The testing system as described in claim 8, characterized in that, The connection module includes a signal adapter board, the input end of which is connected to the driver board under test, one output end of which is connected to the display module, and the other output end of which is connected to the video signal acquisition module.

10. The testing system as described in claim 8, characterized in that, The connection module includes a signal switch, the input terminal of which is connected to the driver board under test, one output terminal of which is connected to the display module, and the other output terminal of which is connected to the video signal acquisition module.

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