Display screen correction device and method and control device

Abstract

The invention provides a display screen correction device and method and a control device, and relates to the technical field of display screens, the device comprises a control module and a calculation module, and the control module is connected with the calculation module; the control module is configured to determine a target display parameter and synchronize the target display parameter to the calculation module; controlling the tested display screen to display a first picture, acquiring an actual display parameter, and synchronizing the actual display parameter to a calculation module; the calculation module is configured to determine correction parameters according to the target display parameters and the actual display parameters and feed back the correction parameters to the control module, and the correction parameters are used for correcting the display effect of the tested display screen; the control module is further configured to import the correction parameters into the board card of the tested display screen. Based on the scheme, each display screen in the same batch can be independently corrected in the production line, it is guaranteed that the whole batch of display screens can reach the expected display quality, automation is achieved in the whole correction process, and correction efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of display screens, and more specifically, to a display screen correction device, method and control device. Background Art

[0002] In the manufacturing industry of liquid crystal display (LCD) and organic light-emitting diode (OLED) displays, it is impossible to guarantee that each display screen of the same model in the same batch manufactured by a large-scale production line can meet expectations in multiple dimensions such as color accuracy, brightness uniformity and contrast, which directly affects the quality of the display screen and user experience. Therefore, manufacturers will conduct research and development and testing in the early stage of production, formulate a series of preset parameters, and then encode these preset parameters into multiple displays manufactured in the same batch, and uniformly calibrate multiple displays so that multiple displays can provide users with a benchmark of good display effects.

[0003] However, the above-mentioned method of uniformly calibrating multiple display screens based on preset parameters ignores the quality differences between individual display screens caused by differences in materials, preparation processes and assembly processes. This makes the calibration accuracy of multiple display screens poor, and it is impossible to accurately calibrate the entire batch of display screens manufactured on the production line, which may ultimately lead to the production qualification rate of the entire batch of display screens failing to meet expectations, resulting in corresponding economic losses. Summary of the invention

[0004] The present application provides a display screen correction device, method and control device, which can individually calibrate each display screen in a plurality of display screens produced in the same batch in a large-scale display screen production line to ensure that the plurality of display screens produced in the entire batch can achieve the expected display quality. The entire correction process is automated to avoid manual intervention as much as possible, thereby ensuring correction efficiency and reducing labor costs.

[0005] In a first aspect, a display screen correction device is provided, which is connected to a display screen under test, and includes: a control module and a calculation module, wherein the control module is connected to the calculation module; wherein the control module is configured to: determine target display parameters, and synchronize the target display parameters to the calculation module, wherein the target display parameters are related to the display effect of the display screen under test; control the display screen under test to display a first picture, obtain actual display parameters, and synchronize the actual display parameters to the calculation module, wherein the actual display parameters are related to the display effect corresponding to the first picture; the calculation module is configured to: determine correction parameters according to the target display parameters and the actual display parameters, and feed the correction parameters back to the control module, wherein the correction parameters are used to correct the display effect of the display screen under test; and the control module is further configured to: import the correction parameters into a board card of the display screen under test.

[0006] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned device also includes: a parameter configuration module, the parameter configuration module includes an input device, the parameter configuration module is connected to the control module, and the parameter configuration module is configured to: determine the target display parameters in response to the user's operation on the input device, and send the target display parameters to the control module.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned target display parameters include at least one of the following parameters: a target gamma value, a target white balance parameter, and a target color difference parameter; the control module is also configured to: according to the content of the target display parameters, control the calculation module to load a correction algorithm corresponding to the content of the target display parameters.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned device also includes: a display module, which is respectively connected to the control module and the display screen under test; the control module is specifically configured to: send a first display signal to the display module, and the first display signal is used to indicate the color of the first picture; the display module is configured to: determine the color of the first picture according to the first display signal, and trigger the display screen under test to display the first picture.

[0009] In combination with the first aspect, in some implementations of the first aspect, the above-mentioned device also includes: a data acquisition module, the data acquisition module is respectively connected to the control module and the color analyzer, and the color analyzer is associated with the tested display screen; the control module is specifically configured to: send a first control signal to the data acquisition module; the data acquisition module is configured to: call a functional interface corresponding to the color analyzer according to the first control signal, the functional interface is integrated in the data acquisition module, and the functional interface is used to trigger the color analyzer to collect actual display parameters; read the actual display parameters from the color analyzer, and send the actual display parameters to the control module.

[0010] In combination with the first aspect, in certain implementations of the first aspect, there are multiple types of functional interfaces integrated in the data acquisition module, and the multiple functional interfaces correspond to multiple models of color analyzers.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned device also includes: a synchronization module, which is connected to the control module and the board respectively; the control module is specifically configured to: send correction parameters to the synchronization module; the synchronization module is configured to: import the correction parameters into the board.

[0012] In a second aspect, a method for display screen correction is provided, which is applied to a control module, the control module belongs to a display screen correction device, the display screen correction device is connected to the display screen under test, the display screen correction device also includes a calculation module, the control module is connected to the calculation module, the method includes: determining target display parameters, and synchronizing the target display parameters to the calculation module, the target display parameters are related to the display effect of the display screen under test; controlling the display screen under test to display a first picture; obtaining actual display parameters, and synchronizing the actual display parameters to the calculation module, the actual display parameters are related to the display effect corresponding to the first picture, the target display parameters and the actual display parameters are used by the calculation module to determine correction parameters, and the correction parameters are used to correct the display effect of the display screen under test; receiving the correction parameters from the calculation module, and importing the correction parameters into the board of the display screen under test.

[0013] In combination with the second aspect, in certain implementations of the second aspect, the display screen correction device also includes a parameter configuration module, the parameter configuration module includes an input device, the parameter configuration module is connected to the control module, and receives target display parameters from the parameter configuration module, and the target display parameters are determined by the parameter configuration module in response to the user's operation on the input device.

[0014] In combination with the second aspect, in certain implementations of the second aspect, the target display parameters include at least one of the following parameters: a target gamma value, a target white balance parameter, and a target color difference parameter. According to the content of the target display parameters, the calculation module is controlled to load a correction algorithm corresponding to the content of the target display parameters.

[0015] In combination with the second aspect, in certain implementations of the second aspect, the display screen correction device also includes a display module, which is respectively connected to the control module and the display screen under test, and sends a first display signal to the display module, where the first display signal is used to indicate the color of the first picture, so that the display module triggers the display screen under test to display the first picture.

[0016] In combination with the second aspect, in certain implementations of the second aspect, the display screen correction device also includes a data acquisition module, the data acquisition module is respectively connected to the control module and the color analyzer, the color analyzer is also connected to the display screen under test, and a first control signal is sent to the data acquisition module, the first control signal is used to trigger the data acquisition module to call a functional interface corresponding to the color analyzer, the functional interface is integrated in the data acquisition module, and the functional interface is used to trigger the color analyzer to collect actual display parameters; receive the actual display parameters from the data acquisition module, and the actual display parameters are read from the color analyzer by the data acquisition module.

[0017] In combination with the second aspect, in some implementations of the second aspect, the display screen correction device also includes a synchronization module, which is connected to the control module and the board respectively, and sends correction parameters to the synchronization module so that the synchronization module imports the correction parameters into the board.

[0018] In a third aspect, a control device is provided, comprising a processor and a memory, wherein the processor and the memory are connected, wherein the memory is used to store program code, and the processor is used to call the program code to execute a method in any possible implementation mode of the method design of the second aspect above.

[0019] In a fourth aspect, a control device is provided, comprising a module or unit for executing a method in any possible implementation of the method design of the second aspect described above.

[0020] In a fifth aspect, a computer-readable storage medium is provided, storing a computer program, wherein the computer program is executed by a processor to implement the method in any possible implementation manner in the method design of the second aspect.

[0021] In a sixth aspect, a computer program product is provided, comprising instructions, which, when executed by a processor, enable a computer to execute a method in any possible implementation of the method design of the second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1 is a schematic diagram of the structure of a display screen calibration device 100 proposed in an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of module interaction for controlling the display screen 200 under test, as proposed in an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of module interaction for obtaining actual display parameters proposed in an embodiment of the present application;

[0025] Figure 4 It is a schematic diagram of module interaction for importing correction parameters into a board card proposed in an embodiment of the present application;

[0026] Figure 5 1 is a schematic structural diagram of a display screen correction device 100 proposed in an embodiment of the present application;

[0027] Figure 6 It is a flowchart of a method 600 for display screen calibration proposed in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0029] The embodiments of the present application will present various aspects, embodiments or features around a system including multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all devices, components, modules, etc. discussed in conjunction with the figures. In addition, combinations of these schemes may also be used.

[0030] In addition, in the embodiments of the present application, words such as "exemplary" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0031] The business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0032] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0033] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can be represented by: including the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0034] With the development of display technology, the popularity of high-definition and ultra-high-definition video content, and the maturity of 4K and 8K ultra-high-resolution display technology, the carriers on which these technologies rely, LCD and OLED displays, have become the mainstream of the current display application market. As users' demand for display effects and display quality increases, the quality inspection standards for LCD and OLED displays are also gradually increasing, which requires that each display on the production line achieve the best expected picture display quality as much as possible.

[0035] However, in the LCD and OLED display manufacturing industry, for multiple displays of the same model in the same batch manufactured on large-scale production lines, there may be individual differences in the materials, process flow and assembly operations used in the manufacturing process of these displays, which leads to differences in the display quality between multiple displays produced in the same batch. These differences are usually reflected in multiple dimensions such as color accuracy, brightness uniformity and contrast, which will directly affect the finished product quality and user experience of the display.

[0036] To this end, display manufacturers will invest a lot of resources in R&D and testing in the early stages of production, and develop a series of factory parameters, such as preset gamma values ​​to optimize grayscale performance, preset white balance parameters to ensure natural and realistic colors, etc. These preset parameters are then encoded into the boards of multiple display screens manufactured in the same batch, and multiple display screens are uniformly calibrated so that multiple display screens can provide users with a benchmark of good display effects.

[0037] However, the above-mentioned method of uniformly calibrating multiple display screens based on preset parameters ignores the quality differences between individual display screens caused by differences in materials, process flow and assembly operations during the manufacturing process. Therefore, even if multiple display screens produced in the same batch are calibrated based on the same set of preset parameters, some display screens may have problems of over-calibration or under-calibration, that is, the accuracy of calibration of multiple display screens is poor, and the finished product quality inspection standards cannot be met, which may eventually lead to the production qualification rate of the entire batch of display screens failing to meet expectations, resulting in corresponding economic losses.

[0038] In addition, at this stage, the work of calibrating multiple display screens manufactured on the production line, especially the work of determining the corresponding correction algorithm to obtain the parameters for correcting the display quality of the display screen, requires manual participation. If each screen on the production line is calibrated individually, it will inevitably cause a lot of manpower expenses and increase production costs. Moreover, the production of display screens is based on the production line, and the efficiency of the entire production process needs to be maintained at a high level. Due to the introduction of a large number of manual labor and the low efficiency of manual operation, the method of individually calibrating each screen based on manual participation is introduced into the production line. It will also reduce production efficiency and cannot meet the needs of rapid correction of a whole batch of display screens on the production line. Therefore, at this stage, the above-mentioned solution for calibrating a whole batch of display screens based on a set of preset parameters is adopted.

[0039] In view of this, an embodiment of the present application proposes a display screen correction device, which can correct the picture quality of the display screen, and the entire display screen image display test and correction process is automated, avoiding human participation as much as possible, and the display screen correction efficiency is high, so that the device can be applied to large-scale display screen production lines, and multiple display screens of the same batch manufactured on the production line can be automatically corrected separately. Taking into account the individual differences between multiple display screens, each display screen can be personalized. Correction, improve the picture quality of the display screen, and improve the production qualification rate of the display screen.

[0040] Figure 1 Schematic diagram of the structure of a display screen calibration device 100 proposed in an embodiment of the present application.

[0041] refer to Figure 1 As shown, the display screen calibration device 100 can be connected to the display screen 200 to be tested. The device 100 includes: a control module 110 and a calculation module 120 , and the control module 110 is connected to the calculation module 120 .

[0042] The control module 110 is configured to: determine the target display parameters and synchronize the target display parameters to the calculation module 120, where the target display parameters are related to the display effect of the tested display screen 200; control the tested display screen 200 to display the first picture, obtain the actual display parameters, and synchronize the actual display parameters to the calculation module 120, where the actual display parameters are related to the display effect corresponding to the first picture;

[0043] The calculation module 120 is configured to: determine the correction parameters according to the target display parameters and the actual display parameters, and feed back the correction parameters to the control module 110, where the correction parameters are used to correct the display effect of the tested display screen 200;

[0044] The control module 110 is further configured to: import the correction parameters into the board of the display screen 200 under test.

[0045] In some possible embodiments, the connection between modules or devices mentioned in the embodiments of the present application may refer to a wired connection or a wireless connection. The same is true for the subsequent connection between modules.

[0046] In some possible embodiments, the first picture may be an image, a group of images, or a video.

[0047] In some possible embodiments, the target display parameters may be written into the device 100 by the user. In view of this, the device 100 may further include a parameter configuration module 130, which includes an input device. The parameter configuration module 130 is connected to the control module 110. The parameter configuration module 130 is configured to: determine the target display parameters in response to the user's operation on the input device, and send the target display parameters to the control module 110. Based on this solution, the user can customize the parameters to be calibrated for the tested display screen, thereby increasing the calibration flexibility of the device 100.

[0048] In some possible embodiments, the target display parameters determined by the parameter configuration module 130 can be used to calibrate multiple display screens of the same model, so the control module 110 can obtain the target display parameters once before calibrating the multiple display screens, and then store the currently received target display parameters locally; accordingly, the user can also input the target display parameters once to the parameter configuration module 130 before starting to calibrate the multiple display screens. When the user re-enters the target display parameters to the parameter configuration module 130 again, it may mean that multiple display screens of another model need to be calibrated later, so when the control module 110 receives the new target display parameters sent from the parameter configuration module 130, the control module 110 can replace the currently stored target display parameters with the new target display parameters, and then perform corresponding calibration operations on the subsequently connected display screens based on the new target display parameters.

[0049] In some possible embodiments, the target display parameter includes at least one of the following parameters: a target gamma value, a target white balance parameter, and a target color difference parameter.

[0050] Among them, the target gamma value is used to perform gamma correction on the display screen, the target white balance parameter is used to perform white balance correction on the display screen, and the target color difference parameter is used to perform color difference correction on the display screen.

[0051] It should be understood that gamma correction is used to adjust the relationship between the brightness or grayscale value of an image and its corresponding physical optical power to optimize the grayscale performance of the display screen. In digital image processing, since the human eye's perception of brightness and physical optical power is not a simple linear relationship, but a power function relationship, gamma correction is required to match the visual perception of the human eye. The parameters of gamma correction are mainly gamma values, which determine the degree of power adjustment of the pixel value (or brightness value). The specific value depends on the electro-optical characteristics of the display screen and the visual characteristics of the human eye. Therefore, by adjusting the gamma value, the brightness distribution of the image can be made more in line with the visual habits of the human eye and the visual effect of the image can be improved.

[0052] White balance correction is used to adjust the color balance in an image, ensuring that white objects appear truly white in the image and avoiding color cast. The parameters for white balance correction usually include color temperature values ​​and other color adjustment parameters (such as hue, saturation, etc.). Among them, the color temperature value is used to quantify the color temperature of the light source. By adjusting the color temperature value, the overall hue of the color in the image can be changed. Other color adjustment parameters are used to fine-tune the color balance of the image to make the image more realistic and natural.

[0053] Chromatic aberration correction is used to solve the deviation and distortion problems between different colors in an image. The parameters of chromatic aberration correction may include chromaticity coordinates, chromatic aberration values, and color space conversion parameters. Among them, chromaticity coordinates are used to describe the position and distribution of colors in an image. By adjusting the chromaticity coordinates, the deviation between colors can be corrected; the chromatic aberration value is used to quantify the degree of difference between colors. By reducing the chromatic aberration value, the color accuracy and consistency of the image can be improved; the color space conversion parameters are used to convert between different color spaces to match different display devices and output requirements.

[0054] In some possible embodiments, the control module 110 is further configured to: according to the content of the target display parameter, control the calculation module 120 to load the correction algorithm corresponding to the content of the target display parameter. Based on this solution, the device 100 can perform personalized correction on different display parameters, that is, use corresponding correction algorithms for different display parameters, thereby increasing the compatibility and applicability of the device 100.

[0055] Accordingly, the calculation module 120 may load a gamma correction algorithm, a white balance correction algorithm or a color difference correction algorithm to achieve correction of different display parameters.

[0056] For example, taking gamma correction as an example, the calculation module 120 can perform gamma correction through the following process to obtain correction parameters:

[0057] S1: The control module 110 requests the calculation module 120 for the color scale to be measured, and the calculation module 120 determines the corresponding color scale according to the target display parameter.

[0058] For example, if the color scale in the target display parameter is 32 color scales, the color scales determined by the calculation module 120 include: 0, 4, 8, 12, 16, 20, 24, 28, ..., 240, 244, 248, 252, 255. So that the R value, G value and B value in the RGB model are respectively equal to one of the 32 color scale values, so as to display a gray screen.

[0059] S2: When the calculation module 120 receives the actual display parameters sent by the control module 110 , the minimum brightness and the maximum brightness of the display screen 200 under test can be determined.

[0060] Among them, the actual display parameters can be presented in the form of a brightness value table corresponding to the color level (also called a gamma table), such as {{0,0.1},{4,10.22},{8,16.13},…,{252,394.33},{255,400.22}}.

[0061] S3: The calculation module 120 calculates the target brightness value corresponding to each color level and the color level value corresponding to the target brightness value according to the target gamma value set in the target display parameters, thereby generating a new gamma table, and returns the gamma table to the control module 110. The gamma table can be used to represent the above-mentioned correction parameters, so that the control module 110 imports the correction parameters into the board of the display screen 200 under test.

[0062] It should be understood that when the calculation module 120 adopts other correction algorithms for gamma correction, the detailed process of obtaining the correction parameters mentioned above can be adaptively adjusted; and when the calculation module 120 corrects other display parameters, such as white balance correction, chromatic aberration correction, etc., the detailed process of obtaining the correction parameters mentioned above can also be adaptively adjusted.

[0063] In some possible embodiments, the control module 110 may cooperate with other functional modules to realize the operation of controlling the tested display screen 200 to display the first screen. Based on this, the device 100 may also include:

[0064] A display module 140, which is connected to the control module 110 and the display screen 200 under test respectively;

[0065] Based on this, the control module 110 may be specifically configured to: send a first display signal to the display module 140, where the first display signal is used to indicate the color of the first picture;

[0066] In addition, the display module 140 is further configured to: determine the color of the first picture according to the first display signal, and trigger the tested display screen 200 to display the first picture.

[0067] It should be understood that the display module 140 is equivalent to synchronizing the first display signal of the control module 110 to the display screen 200 under test, so that the display screen 200 under test displays the first picture corresponding to the first display signal.

[0068] In some possible embodiments, the display module 140 may be connected to the display screen 200 under test via a high definition multimedia interface (HDMI) data line. It can be seen that the display module 140 may include an HDMI interface for connecting one end of the HDMI data line, and the other end of the HDMI data line is used to connect to the HDMI interface of the display screen 200 under test.

[0069] Figure 2 It is a schematic diagram of module interaction for controlling the display screen 200 under test proposed in an embodiment of the present application.

[0070] S210 : In response to establishing a connection with the display module 140 , the tested display screen 200 sends a feedback signal to the display module 140 .

[0071] S220: The display module 140 determines that it has been connected to the tested display screen 200 according to the feedback signal, and sends first indication information to the control module 110. The first indication information is used to indicate that the display module 140 is ready.

[0072] In some possible embodiments, the first indication information may also be fed back to the control module 110 in the form of a status report, where the status report is used to indicate the current working status of the display module 140, for example, a ready status. In this status, it means that the relevant equipment on the display module 140 side has completed the preliminary preparations, and the control module 110 may start the relevant process of display screen correction.

[0073] S230: The control module 110 sends a first display signal to the display module 140 in response to the first indication information.

[0074] For example, the color of the first image indicated by the first display signal is (R=200, G=200, B=200); wherein the color of the first image is described based on a red-green-blue (RGB) model, in which a color is composed of three basic color channels, red (R), green (G), and blue (B), and the value of each color channel is usually between 0 and 255, where 0 indicates that the color channel has no contribution, and 255 indicates the maximum contribution of the color channel. When R=200, G=200, and B=200, this means that the red, green, and blue channels all have the same brightness value, i.e., 200. Since the values ​​of the three color channels are equal, the color produced by their mixing is a neutral gray tone, which can be used to calibrate the color accuracy and white balance of the display.

[0075] S240: The display module 140 determines the color of the first picture according to the first display signal, and triggers the tested display screen 200 to display the first picture.

[0076] In some possible embodiments, after executing the above S240, the process can jump to the above S220, and the process is repeated until the control of the screen display of the tested display screen 200 is completed. In the subsequent loop operation, the control module 110 can send other display signals, such as the second display signal, the third display signal, etc., to the display module 140 to enable the tested display screen 200 to display different screens.

[0077] In some possible embodiments, during the process of the display module 140 performing the above-mentioned related operations, the following operations may also be performed:

[0078] S250: In response to being disconnected from the tested display screen 200, the display module 140 sends second indication information to the control module 110, where the second indication information is used to indicate that the display module 140 is disconnected from the tested display screen 200.

[0079] In some possible embodiments, after receiving the second indication information, the control module 110 may stop sending the corresponding display signal to the display module 140 .

[0080] In some possible embodiments, the control module 110 may cooperate with other functional modules to obtain the actual display parameters corresponding to the tested display screen 200 when displaying the first picture. Based on this, the device 100 may also include:

[0081] A data acquisition module 150, the data acquisition module 150 is connected to the control module 110 and the color analyzer 300 (ColorAnalyzer, CA), and the color analyzer 300 is associated with the display screen 200 under test;

[0082] Based on this, the above-mentioned control module 110 can be specifically configured to: send a first control signal to the data acquisition module 150; it should be understood that the first control signal is used to control the data acquisition module 150 to start obtaining the actual display parameters corresponding to the first screen currently displayed on the tested display screen 200 through the color analyzer 300.

[0083] In addition, the data acquisition module 150 is also configured to: call the functional interface corresponding to the color analyzer 300 according to the first control signal, and the functional interface is integrated in the data acquisition module 150, and the functional interface is used to trigger the color analyzer 300 to collect actual display parameters; read the actual display parameters from the color analyzer 300, and send the actual display parameters to the control module 110.

[0084] In some possible embodiments, the color analyzer 300 mentioned in the embodiment of the present application is associated with the display screen 200 under test, which means that the collector of the color analyzer 300 is opposite to the display screen of the display screen 200 under test to realize the collection of actual display parameters of the display screen 200 under test.

[0085] In some possible embodiments, the data types included in the actual display parameters mentioned in the embodiments of the present application may not be completely the same as the data types included in the target display parameters. For example, if the target display parameters include the target gamma value, the actual display parameters may not directly include the actually detected gamma value, but may include some parameters that can be used to characterize the actual gamma value of the display screen under test, such as brightness, etc. Regardless of whether it is the target display parameter or the actual display parameter, they can be used to characterize the picture quality or display effect of the display screen under test, except that the target display parameter is used to characterize the display effect of the display screen under test under the expected target, and the actual display parameter is used to characterize the display effect of the display screen under test that has not been calibrated or has not completed calibration.

[0086] In some possible embodiments, there are multiple types of functional interfaces integrated in the data acquisition module 150 , and the multiple functional interfaces correspond to multiple models of color analyzers.

[0087] For example, the model of the color analyzer 300 may be CA-310, CA-410, etc., then the functional interface corresponding to CA-310, CA-410, etc. may be integrated in the data acquisition module 150 to call the color acquisition function of the corresponding color analyzer 300 .

[0088] In some possible embodiments, the color analyzer 300 connected to the data acquisition module 150 can be used to collect the following data: Chromaticity coordinates: used to indicate the position of a color in a color space. Luminance: measured in candela / square meter (cd / m 2 ) as a unit, used to characterize the brightness of the display screen 200 under test. Color temperature: in Kelvin (K), used to evaluate the color temperature of the white point of the display screen 200 under test.

[0089] Figure 3 It is a schematic diagram of module interaction for obtaining actual display parameters proposed in an embodiment of the present application.

[0090] S310 : In response to establishing a connection with the color analyzer 300 , the data acquisition module 150 identifies the model of the color analyzer 300 .

[0091] S320: The data collection module 150 loads the data collection method corresponding to the color analyzer 300 of this model.

[0092] In some possible embodiments, the target display parameter may also carry a measurement frequency. After the control module 110 obtains the target display parameter, the measurement frequency may be synchronized to the data acquisition module 150. When determining the data acquisition method, the data acquisition module 150 may also determine the measurement frequency, thereby indicating the color analyzer 300 to collect the color frequency. Based on this solution, it is possible to avoid manual individual settings of the color analyzer 300.

[0093] It should be understood that in order to ensure that the color analyzer 300 can start working in a standard and stable state and improve the accuracy and reliability of measurement, the color analyzer 300 needs to be initialized before using it. The operation is as follows:

[0094] S330 : Based on the above data collection method, the data collection module 150 calls the functional interface corresponding to the color analyzer 300 of this model integrated in the data collection module 150 , and performs an initialization operation on the color analyzer 300 .

[0095] S340: After determining that the initialization operation on the color analyzer 300 has been completed, the data acquisition module 150 sends third indication information to the control module 110, where the third indication information is used to indicate that the data acquisition module 150 is ready.

[0096] In some possible embodiments, the third indication information may also be fed back to the control module 110 in the form of a status report, where the status report is used to indicate the current working status of the data acquisition module 150, for example, the ready status. In this status, it means that the relevant equipment on the side of the data acquisition module 150 has completed the preliminary preparations, and the control module 110 may start the relevant process of display screen correction.

[0097] In some possible embodiments, after the color analyzer 300 completes the initialization operation, a feedback signal may be sent to the data acquisition module 150 , where the feedback signal is used to indicate that the initialization operation has been completed.

[0098] S350: The control module 110 sends a first control signal to the data acquisition module 150 in response to the third indication information.

[0099] S360: The data acquisition module 150 sends a first request message to the color analyzer 300 in response to the first control signal. The first request message is used to request the color analyzer 300 to acquire actual display parameters of the display screen 200 being tested.

[0100] S370: The color analyzer 300 collects actual display parameters corresponding to the first picture displayed by the currently tested display screen 200 in response to the first request information.

[0101] S380 : The color analyzer 300 feeds back the actual display parameters to the data acquisition module 150 , and the data acquisition module 150 feeds back the actual display parameters to the control module 110 .

[0102] In some possible embodiments, after executing the above S380, the process can jump to the above S340, and the process can be repeated until the actual display parameters of the tested display screen 200 are collected. In the subsequent loop operation, the control module 110 can send other display signals, such as the second display signal, to the display module 140 to enable the tested display screen 200 to display the second screen, and then control the data collection module 150 to obtain the actual display parameters corresponding to the tested display screen 200 when displaying the second screen.

[0103] In some possible embodiments, during the process of the data acquisition module 150 performing the above-mentioned related operations, the following operations may also be performed:

[0104] S390: In response to being disconnected from the color analyzer 300, the data acquisition module 150 sends fourth indication information to the control module 110, where the fourth indication information is used to indicate that the data acquisition module 150 is disconnected from the color analyzer 300.

[0105] In some possible embodiments, after the control module 110 receives the fourth indication information, it may stop sending the first control signal to the display module 140 .

[0106] In some possible embodiments, the control module 110 may cooperate with other functional modules to implement the operation of importing the calibration parameters into the board of the tested display screen 200. Based on this, the device 100 may also include:

[0107] A synchronization module 160, which is connected to the control module 110 and the board of the display screen 200 under test respectively;

[0108] Based on this, the control module 110 may be specifically configured to send the correction parameters to the synchronization module 160 .

[0109] In addition, the synchronization module 160 is further configured to: import the correction parameters into the board of the display screen 200 under test.

[0110] In some possible embodiments, the interface of the synchronization module 160 can be compatible with various models of boards, such as T982, T3588, etc. This requires that the device 100 and the board can exchange commands based on a unified communication protocol, so that the device 100 sends corresponding commands to the board, and the command can carry the correction parameters, so that the board can correct the display screen 200 under test according to the command after receiving the command, such as updating the gamma table, updating the parameter settings related to white balance, etc. (the update object depends on the parameter category included in the correction parameters).

[0111] In some possible embodiments, the synchronization module 160 can be connected to the board of the display screen 200 under test via a connecting line, wherein one end of the connecting line is connected to the communication (COM) port of the synchronization module 160, and the other end of the connecting line is connected to the port of the board of the display screen 200 under test.

[0112] Figure 4 It is a schematic diagram of module interaction for importing correction parameters into a board card proposed in an embodiment of the present application.

[0113] S410: In response to establishing a connection with the board of the tested display screen 200, the synchronization module 160 sends fifth indication information to the control module 110, where the fifth indication information is used to indicate that the synchronization module 160 is ready.

[0114] In some possible embodiments, the fifth indication information may also be fed back to the control module 110 in the form of a status report, where the status report is used to indicate the current working status of the synchronization module 160, for example, the ready status. In this status, it means that the relevant equipment on the synchronization module 160 side has completed the preliminary preparations, and the control module 110 may start the relevant process of display screen correction.

[0115] In some possible embodiments, after the synchronization module 160 is connected to the board of the tested display screen 200 , the board of the tested display screen 200 may send a feedback signal to the synchronization module 160 , where the feedback signal is used to indicate that the board and the synchronization module 160 have completed the connection.

[0116] S420: The control module 110 sends a correction parameter to the synchronization module 160 in response to the fifth indication information.

[0117] S430: The synchronization module 160 determines a correction instruction according to the correction parameters, and sends the correction instruction to the board of the tested display screen 200. The correction instruction is used to correct the relevant parameters preset in the board of the tested display screen 200.

[0118] S440 : When the synchronization module 160 determines that the correction is completed, the correction result is obtained and fed back to the control module 110 .

[0119] In some possible embodiments, the calibration result may include the calibrated values ​​of relevant parameters preset by the board, or may include characters indicating whether the calibration is successful or failed.

[0120] In some possible embodiments, when the calibration result received by the control module 110 indicates a calibration failure, the control module 110 may roll back the previous calibration process and jump the calibration process to before the calibration of the tested display screen 200 .

[0121] In some possible embodiments, the process of calibrating the board is a cyclic process, and the relevant parameters of the board are calibrated in each cycle until the calibration result meets the display effect represented by the target display parameter. However, when the number of cycles reaches an abnormal threshold, it can be determined that the board calibration has failed.

[0122] In some possible embodiments, correction failure may also occur in related operations of the data acquisition module 150. For example, when the data acquisition module 150 collects abnormal data, it may also directly feedback the correction result to the control module 110, and the correction result is used to indicate correction failure.

[0123] In some possible embodiments, after the above S440 is executed, the process can jump to the above S410, and the process can be repeated until the calibration of the relevant parameters preset on the board of the tested display screen 200 is completed.

[0124] In some possible embodiments, during the process of the synchronization module 160 performing the above-mentioned related operations, the following operations may also be performed:

[0125] S450: In response to the disconnection of the board of the tested display screen 200, the synchronization module 160 sends sixth indication information to the control module 110, where the sixth indication information is used to indicate that the synchronization module 160 and the board of the tested display screen 200 are disconnected.

[0126] In some possible embodiments, after the control module 110 receives the sixth indication information, it may stop sending the correction parameters to the synchronization module 160 .

[0127] Based on the above technical solution, by integrating multiple functional modules in the device 100, the picture quality of the display screen can be corrected through the interaction between the functional modules, and the entire process of controlling the display screen to display the test screen and correcting the actual display parameters of the display screen can be automated based on the device 100, thereby avoiding human participation as much as possible, which helps to improve the efficiency of display screen correction. Even if the device 100 is applied to a large-scale display screen production line, it can also automatically correct multiple display screens of the same batch manufactured on the production line individually and efficiently, meeting the demand for rapid correction of a whole batch of display screens on the production line. In addition, since the device 100 can perform personalized correction on each display screen, taking into account the individual differences between multiple display screens, each display screen is personalized, the picture quality of the display screen is improved, and the production qualification rate of the display screen is improved.

[0128] Figure 5 1 is a schematic diagram of the structure of a display screen correction device 100 proposed in an embodiment of the present application.

[0129] Should Figure 5 For top view, refer to Figure 5 As shown, the apparatus 100 may further include:

[0130] The housing 170 is used to load the control module 110, the calculation module 120, the display module 140, the data acquisition module 150 and the synchronization module 160 mentioned in the embodiment of the present application.

[0131] The data acquisition module 150 mentioned in the embodiment of the present application is disposed on the first surface 01 of the housing 170 .

[0132] In some possible embodiments, the data acquisition module 150 may include an input device 151 and an output device 152, wherein the input device may be a physical or virtual button, and the output device may be a display screen, such as an LED screen, for displaying user-configured parameters.

[0133] In some possible embodiments, when the user configures the target display parameters, the display screen of the data acquisition module 150 can display a parameter configuration interface, based on which the user can determine and select the parameter items to be set, and then input the values ​​of the selected parameter items through the input device, such as the target gamma value, white balance parameters, etc.; finally, by clicking the confirmation button in the input device, the configured target display parameters are saved and written into the storage space of the device 100, and the related operations mentioned in the above-mentioned embodiments of the control module 110 are triggered, which will not be repeated here.

[0134] In some possible embodiments, the shell 170 may further be provided with a first hole 171, a second hole 172 and a third hole 173, wherein the first hole 171 may be used to expose the interface of the display module 140 for connecting to the tested display screen 200 (for example, an HDMI interface) to the outside of the shell 170, the second hole 172 may be used to expose the interface of the data acquisition module 150 for connecting to the color analyzer 300 to the outside of the shell 170, and the third hole 173 may be used to expose the interface of the synchronization module 160 for connecting to the board card of the tested display screen 200 (for example, a COM port) to the outside of the shell 170.

[0135] refer to Figure 5 As shown, the device 100 proposed based on the embodiment of the present application is able to implement a complete display screen calibration process, during which the operator is required to connect the device 100 to corresponding peripherals, such as a color analyzer and a tested display screen, and for multiple display screens of the same model, it is only necessary to input the target display parameters once, without any other additional operations, and the entire operation is only for the device 100, without the need for an additional computer to be connected for control assistance, which is more suitable for the site conditions provided by the production line (it is relatively difficult to set up a computer in the production line site).

[0136] Based on the device 100 proposed in the above embodiment, the embodiment of the present application further proposes a method for display screen calibration, which can be applied to the control module 110 of the above device 100 to achieve interaction with other modules of the device 100.

[0137] Figure 6 It is a flowchart of a method 600 for display screen calibration proposed in an embodiment of the present application.

[0138] S610: Determine target display parameters, and synchronize the target display parameters to a calculation module, where the target display parameters are related to a display effect of the display screen under test.

[0139] S620: Control the tested display screen to display a first picture.

[0140] S630: Acquire actual display parameters and synchronize the actual display parameters to the calculation module. The actual display parameters are related to the display effect corresponding to the first screen. The target display parameters and the actual display parameters are used by the calculation module to determine correction parameters. The correction parameters are used to correct the display effect of the tested display screen.

[0141] S640: Receive the correction parameters from the calculation module, and import the correction parameters into the board of the display screen under test.

[0142] It should be understood that the extended description of the target display parameters, actual display parameters, and correction parameters mentioned in the method 600 can be found in the aforementioned corresponding embodiments, and will not be repeated here.

[0143] Based on the above technical solution, the automatic correction of the tested display screen can be realized through the interaction between the control module and the calculation module, avoiding manual intervention and improving the correction efficiency, so that the solution can be directly applied to the production line to realize personalized correction of each display screen in multiple display screens produced in the same batch, improve the picture quality of the display screen, and improve the production qualification rate of the display screen. And because manual intervention is avoided, it can further reduce labor expenses and help reduce production costs.

[0144] In some possible embodiments, before the above S610, the control module may further perform the following operation: receiving a target display parameter from a parameter configuration module, where the target display parameter is determined by the parameter configuration module in response to a user operation on an input device.

[0145] In some possible embodiments, after receiving the target display parameters, they may be stored in a local memory of the display screen correction device to which the control module belongs. Then, the operation of determining the target display parameters may be an operation of reading the target display parameters from the local memory.

[0146] Based on the above technical solution, the correction parameters of the tested display screen can be customized, thereby increasing the flexibility of the correction method.

[0147] In some possible embodiments, the target display parameter includes at least one of the following parameters: a target gamma value, a target white balance parameter, and a target color difference parameter. The control module may further perform the following operations:

[0148] According to the content of the target display parameter, the control calculation module loads the correction algorithm corresponding to the content of the target display parameter.

[0149] Based on the above technical solution, it is possible to implement personalized correction for different display parameters, that is, to adopt corresponding correction algorithms for different display parameters, thereby increasing the compatibility and applicability of the correction method.

[0150] In some possible embodiments, the above S620 may be implemented by the following operations: sending a first display signal to the display module, where the first display signal is used to indicate the color of the first picture, so that the display module triggers the tested display screen to display the first picture.

[0151] It should be understood that, based on the connection form of the device 100 mentioned in the above embodiment, the display module is connected to the display screen to be tested.

[0152] In some possible embodiments, the operation of obtaining the actual display parameters in the above S630 can be further implemented by the following operations: sending first control information to the data acquisition module, the first control information is used to trigger the data acquisition module to call the functional interface corresponding to the color analyzer, the functional interface is integrated in the data acquisition module, and the functional interface is used to trigger the color analyzer to collect the actual display parameters; receiving the actual display parameters from the data acquisition module, and the actual display parameters are read from the color analyzer by the data acquisition module.

[0153] It should be understood that, based on the connection form of the device 100 mentioned in the above embodiment, the data acquisition module is connected to the color analyzer, and the color analyzer and the tested display screen are arranged relative to each other.

[0154] In some possible embodiments, the operation of importing the correction parameters into the board of the tested display screen in S640 can be further implemented by the following operation: sending the correction parameters to the synchronization module so that the synchronization module imports the correction parameters into the board.

[0155] It should be understood that, based on the connection form of the device 100 mentioned in the above embodiment, the synchronization module is connected to the board of the display screen under test.

[0156] Correspondingly, an embodiment of the present application also proposes a control device, including a processor and a memory, wherein the processor and the memory are connected, wherein the memory is used to store program code, and the processor is used to call the program code to execute any display screen correction method proposed in the embodiment of the present application.

[0157] It should be understood that the above-mentioned control device can be a physical form of the control module mentioned in the embodiment of the present application.

[0158] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0159] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0160] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0161] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0162] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0163] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several 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 methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0164] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display screen correction device, characterized in that: The device is connected to the display screen to be tested, and comprises: a control module and a calculation module, wherein the control module is connected to the calculation module; Wherein, the control module is configured to: determine a target display parameter, and synchronize the target display parameter to the calculation module, wherein the target display parameter is related to the display effect of the tested display screen; control the tested display screen to display a first picture, obtain an actual display parameter, and synchronize the actual display parameter to the calculation module, wherein the actual display parameter is related to the display effect corresponding to the first picture; The calculation module is configured to: determine a correction parameter according to the target display parameter and the actual display parameter, and feed the correction parameter back to the control module, wherein the correction parameter is used to correct the display effect of the tested display screen; The control module is further configured to: import the correction parameters into the board of the tested display screen.

2. The device according to claim 1, characterized in that The device also includes: A parameter configuration module, wherein the parameter configuration module includes an input device, the parameter configuration module is connected to the control module, and the parameter configuration module is configured to: determine the target display parameters in response to the user's operation on the input device, and send the target display parameters to the control module.

3. The device according to claim 1 or 2, characterized in that: The target display parameter includes at least one of the following parameters: a target gamma value, a target white balance parameter, and a target color difference parameter; The control module is further configured to: according to the content of the target display parameter, control the calculation module to load a correction algorithm corresponding to the content of the target display parameter.

4. The device according to any one of claims 1 to 3, characterized in that The device also includes: A display module, wherein the display module is connected to the control module and the tested display screen respectively; The control module is specifically configured to: send a first display signal to the display module, where the first display signal is used to indicate the color of the first picture; The display module is configured to: determine the color of the first picture according to the first display signal, and trigger the tested display screen to display the first picture.

5. The device according to any one of claims 1 to 4, characterized in that The device also includes: A data acquisition module, the data acquisition module is connected to the control module and the color analyzer respectively, and the color analyzer is associated with the tested display screen; The control module is specifically configured to: send a first control signal to the data acquisition module; The data acquisition module is configured to: call a function interface corresponding to the color analyzer according to the first control signal, the function interface being integrated in the data acquisition module, and the function interface being used to trigger the color analyzer to collect the actual display parameters; read the actual display parameters from the color analyzer, and send the actual display parameters to the control module.

6. The device according to claim 5, characterized in that There are various types of functional interfaces integrated in the data acquisition module, and the various functional interfaces correspond to various models of color analyzers.

7. The device according to any one of claims 1 to 6, characterized in that The device also includes: A synchronization module, the synchronization module is connected to the control module and the board respectively; The control module is specifically configured to: send the correction parameter to the synchronization module; The synchronization module is configured to: import the correction parameters into the board card.

8. A method for calibrating a display screen, characterized in that: Applied to a control module, the control module belongs to a display screen correction device, the display screen correction device is connected to the tested display screen, the display screen correction device also includes a calculation module, the control module is connected to the calculation module, and the method includes: Determine a target display parameter, and synchronize the target display parameter to the calculation module, wherein the target display parameter is related to the display effect of the tested display screen; Controlling the tested display screen to display a first picture; Acquire actual display parameters, and synchronize the actual display parameters to the calculation module, the actual display parameters are related to the display effect corresponding to the first picture, the target display parameters and the actual display parameters are used by the calculation module to determine correction parameters, and the correction parameters are used to correct the display effect of the tested display screen; The correction parameters are received from the calculation module, and the correction parameters are imported into the board of the display screen under test.

9. The method according to claim 8, characterized in that The display screen correction device further includes a parameter configuration module, the parameter configuration module includes an input device, the parameter configuration module is connected to the control module, and the method further includes: The target display parameter is received from the parameter configuration module, where the target display parameter is determined by the parameter configuration module in response to a user's operation on the input device.

10. The method according to claim 8 or 9, characterized in that: The target display parameter includes at least one of the following parameters: a target gamma value, a target white balance parameter, and a target color difference parameter. The method further includes: According to the content of the target display parameter, the calculation module is controlled to load a correction algorithm corresponding to the content of the target display parameter.

11. The method according to any one of claims 8 to 10, characterized in that The display screen correction device further includes a display module, and the display module is connected to the control module and the tested display screen respectively, and the controlling the tested display screen to display the first picture includes: A first display signal is sent to the display module, where the first display signal is used to indicate the color of the first picture, so that the display module triggers the tested display screen to display the first picture.

12. The method according to any one of claims 8 to 11, characterized in that The display screen correction device further includes a data acquisition module, which is respectively connected to the control module and the color analyzer, and the color analyzer is also connected to the tested display screen. The actual display parameter acquisition includes: Sending a first control signal to the data acquisition module, wherein the first control signal is used to trigger the data acquisition module to call a function interface corresponding to the color analyzer, wherein the function interface is integrated in the data acquisition module, and the function interface is used to trigger the color analyzer to collect the actual display parameters; The actual display parameters are received from the data acquisition module, where the actual display parameters are read from the color analyzer by the data acquisition module.

13. The method according to any one of claims 8 to 12, characterized in that The display screen correction device further comprises a synchronization module, wherein the synchronization module is connected to the control module and the board respectively, and the board for importing the correction parameters into the tested display screen comprises: The correction parameters are sent to the synchronization module so that the synchronization module imports the correction parameters into the board card.

14. A control device, characterized in that: The method comprises a processor and a memory, wherein the processor and the memory are connected, wherein the memory is used to store program codes, and the processor is used to call the program codes to execute the method as claimed in any one of claims 8 to 13.

15. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method according to any one of claims 8 to 13.

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