Screen detection device and screen detection method

Abstract

The present invention relates to the field of display technology and discloses a screen detection device and method. The screen detection device includes: a detection probe for collecting first color data of a screen to be detected at a first refresh frequency and second color data of the screen to be detected at a second refresh frequency; and a processor for calculating a flicker value of the screen to be detected based on the first color data and the second color data. The screen detection device and method provided by embodiments of the present invention have the advantage of detecting the degree of screen flicker.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a screen detection device and a screen detection method. Background Art

[0002] The refresh rate refers to the number of times the electron beam repeatedly scans the image on the screen. The higher the refresh rate, the more stable the displayed image. For currently popular LCD or LED displays, the refresh rate can be understood as the number of times the screen is refreshed per second. Refresh rates can generally be divided into vertical refresh rate and horizontal refresh rate. Currently, the most common refresh rate refers to the vertical refresh rate. The vertical refresh rate indicates the number of times the screen image is redrawn per second, that is, the number of times the screen refreshes per second, and is measured in Hz (Hertz). The higher the refresh rate, the more stable the image, and the more natural and clear the image display. The lower the refresh rate, the more severe the image flicker and jitter.

[0003] Currently, mobile phone displays on the market generally support display technologies that switch between multiple refresh rates. However, the inventors have discovered that in actual use, some defective displays can cause screen flickering when the refresh rate suddenly switches, affecting normal user experience. However, existing technologies are unable to detect the degree of screen flicker, resulting in displays with severe flicker defects still being released into the market, affecting the user experience. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a screen detection device and a screen detection method to detect the flicker degree of the screen.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a screen detection device, including: a detection probe, used to collect first color data of the screen to be detected at a first refresh frequency and second color data of the screen to be detected at a second refresh frequency; a processor, used to calculate the flicker value of the screen to be detected based on the first color data and the second color data.

[0006] An embodiment of the present invention also provides a screen detection method, including: collecting first color data of the screen to be detected at a first refresh frequency, collecting second color data of the screen to be detected at a second refresh frequency; and calculating and obtaining the flicker value of the screen to be detected based on the first color data and the second color data.

[0007] Compared with the prior art, the embodiments of the present invention set a detection probe to collect the first color data of the screen to be detected at the first refresh frequency and the second color data at the second refresh frequency, and then calculate the flicker value of the screen to be detected based on the first color data and the second color data. The flicker value can be used to characterize the flicker degree of the screen to be detected, thereby realizing the detection of the flicker degree of the screen to be detected and ensuring the user experience.

[0008] Preferably, the processor includes a screen interface, the screen interface being used to connect to the screen to be detected, and the processor is further used to control switching of the refresh rate of the screen to be detected via the screen interface. By setting up the screen interface, there is no need to manually switch the refresh rate. The processor can automatically control switching of the refresh rate of the screen to be detected via the screen interface, making it easier to automate the switching process of the refresh rate of the screen to be detected and improving the convenience of the screen detection process.

[0009] Preferably, the processor includes a display control module, which is used to control the screen to be detected to display the flicker value. Setting the display control module to display the flicker value on the screen to be detected can make it easier for the tester to read the flicker value, thereby improving the convenience of the screen detection process.

[0010] Preferably, the detection probe is a spectrum detector, and the spectrum detector is used to collect color data of the screen to be detected.

[0011] Preferably, the method further includes: a fixing member connected to the detection probe, the fixing member being used to fix the relative position between the detection probe and the screen to be detected when the detection probe collects the first color data and the second color data. The fixing member is set to fix the detection probe when collecting the first color data and the second color data, so that the relative position between the detection probe and the screen to be detected does not change when collecting the first color data and the second color data, ensuring that the first color data and the second color data are light collected at the same position of the screen to be detected, avoiding the influence of the detection result on the detection result due to the change of the position of the screen to be detected by the detection probe, and improving the accuracy of the detection result.

[0012] Preferably, the fixing member includes a main body, a clamping portion provided on the main body, and a fixing portion provided on the main body, the fixing portion is used to fix the detection probe, and the clamping portion is used to clamp the screen to be detected.

[0013] Preferably, the fixing part is movably arranged on the main body. The fixing part is movably arranged on the main body so that the detection probe can flexibly detect the screen to be detected from different directions and positions, further improving the accuracy of the detection result.

[0014] Preferably, the step of calculating the flicker value of the screen to be detected based on the first color data and the second color data specifically includes: converting the first color data to obtain a first Lab space index, and converting the second color data to obtain a second Lab space index; and calculating the flicker value of the screen to be detected based on the formula Calculate the first lab space index and the second lab space index to obtain the flicker value Where, ΔL * The parameter L of the first lab space index and the second lab space index is * The difference, Δa * is the parameter a of the first lab space index and the second lab space index * The difference, Δb * The parameter b of the first lab space index and the second lab space index is * The difference.

[0015] Preferably, converting the first color data to obtain the first Lab space index includes: using the formula The first color data is converted to obtain a first Lab space index, wherein X, Y, and Z are color coordinates of the first color data represented by an XYZ color model, and X0, Y0, and Z0 are constants.

[0016] Preferably, when the first color data is represented by the RGB color model, before converting the first color data to obtain the first Lab space index, the method further includes: using the formula

[0017] X=0.412453R+0.357580G+0.180423B,

[0018] Y=0.212671R+0.715160G+0.072169B,

[0019] Z=0.019334R+0.119193G+0.950227B The first color data is converted into an XYZ color model representation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural schematic diagram of a screen detection device provided by a first embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a screen detection device provided by an embodiment of the present invention;

[0022] Figure 3 It is a structural schematic diagram of a screen detection device provided by an embodiment of the present invention;

[0023] Figure 4 is a structural schematic diagram of a screen detection device provided by a second embodiment of the present invention;

[0024] Figure 5 is a flow chart of a screen detection method provided by a third embodiment of the present invention;

[0025] Figure 6 4 is a flow chart of a screen detection method provided by the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more apparent, various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in various embodiments of the present invention to help readers better understand the present application. However, even without these technical details and various variations and modifications based on the following embodiments, the technical solutions claimed in this application can still be implemented.

[0027] The first embodiment of the present invention relates to a screen detection device, the specific structure of which is as follows: Figure 1 As shown, the system includes a detection probe 10 and a processor 20 in communication with the detection probe 10. The detection probe 10 is used to collect first color data of the screen 100 to be detected at a first refresh rate and second color data of the screen 100 to be detected at a second refresh rate; the processor 20 is used to calculate the flicker value of the screen 100 to be detected based on the first color data and the second color data.

[0028] Compared with the existing technology, the detection probe 10 is set to collect the first color data of the screen to be detected 100 at the first refresh frequency and the second color data at the second refresh frequency, and then the processor 20 calculates the flicker value of the screen to be detected based on the first color data and the second color data. The flicker value can be used to characterize the flicker degree of the screen to be detected 100, thereby realizing the detection of the flicker degree of the screen to be detected 100 and ensuring the user experience.

[0029] The implementation details of the present invention will be specifically described below. It should be understood that the following are only examples of some specific implementations of the present invention and do not mean that the following implementations are the only ones.

[0030] Preferably, in one embodiment of the present invention, Figure 2As shown, the processor 20 includes a screen interface 21, which is used to connect to the screen to be detected 100. After the screen interface 21 is connected to the screen to be detected 100, the processor 20 can control the switching of the refresh frequency of the screen to be detected 100 through the screen interface 21. That is, the detection probe 10 first collects the first color data of the screen to be detected 100 at the first refresh frequency, and then the processor 20 controls the screen to be detected 100 to switch the refresh frequency to the second refresh frequency through the screen interface 21. The detection probe 10 now collects the second color data of the screen to be detected 100 at the second refresh frequency. Finally, the processor 20 calculates the flicker value of the screen to be detected 100 based on the first color data and the second color data. Such a setting can improve the overall automation capability of the screen detection device, eliminate the need for manual switching of the refresh frequency, and make it easier to automate the switching process of the refresh frequency of the screen to be detected 100, thereby improving the convenience of the screen detection process.

[0031] Preferably, in another embodiment of the present invention, Figure 3 As shown, the processor 20 also includes a display control module 22, which is used to control the screen to be tested 100 to display the flicker value. Setting the display control module 22 to display the flicker value on the screen to be tested 100 can make it easier for testers to read the flicker value and improve the convenience of the screen testing process. Specifically, in this embodiment, the processor 20 can control the screen to be tested 100 to display the flicker value through the screen interface 21.

[0032] Specifically, in this embodiment, the detection probe 10 is a spectral detector, which is used to collect color data of the screen 100 to be detected. For example, it can be RGB color model, XYZ color model data, etc. of the screen 100 to be detected.

[0033] The second embodiment of the present invention relates to a screen detection device. The second embodiment is substantially the same as the first embodiment, and also includes a detection probe 10 and a processor 20. The main difference is that in the second embodiment of the present invention, Figure 4 As shown, it also includes: a fixing member 30 connected to the detection probe 10, and the fixing member 30 is used to fix the relative position between the detection probe 10 and the screen to be detected 100 when the detection probe 10 collects the first color data and the second color data.

[0034] Compared with the prior art, the second embodiment of the present invention retains all the technical effects of the first embodiment while providing a fixing member 30 to fix the detection probe 10 when the detection probe 10 collects the first color data and the second color data, so that the relative position between the detection probe 10 and the screen to be detected 100 remains unchanged when the first color data and the second color data are collected, ensuring that the first color data and the second color data are the light collected by the detection probe 10 at the same position of the screen to be detected 100, avoiding the change in the relative position of the detection probe 10 with the screen to be detected 100 when detecting the first color data and the second color data, thereby affecting the detection results, thereby improving the accuracy of the detection results.

[0035] Preferably, in this embodiment, the fixing member 30 includes a main body 31, a clamping portion 32 provided on the main body 31, and a fixing portion 33 provided on the main body 31. The fixing portion 33 is used to fix the detection probe 10, and the clamping portion 32 is used to clamp the screen to be detected 100. It is understood that the above is only a specific example of the fixing member 30 in this embodiment and does not constitute a limitation. In other embodiments of the present invention, the fixing member 30 may also have other structures. It is only necessary to ensure that the relative position between the detection probe 10 and the screen to be detected 100 is fixed when the detection probe 10 collects the first color data and the second color data. The specific configuration can be flexibly adjusted according to actual needs.

[0036] Preferably, in this embodiment, the fixing portion 33 is movably provided on the main body 31. The fixing member 33 is movably provided on the main body 31, for example, along Figure 4 The AA' direction in the figure enables the detection probe 10 to flexibly detect the screen 100 to be detected from different directions and positions, further improving the accuracy of the detection result.

[0037] It is worth noting that the modules described in the above embodiments are all logical modules. In actual applications, a logical unit can be a physical unit, a portion of a physical unit, or a combination of multiple physical units. Furthermore, to highlight the innovations of the present invention, this embodiment does not include units that are not closely related to solving the technical problems proposed by the present invention. However, this does not mean that other units do not exist in this embodiment.

[0038] The third embodiment of the present invention relates to a screen detection method, which is applied to the screen display device provided by the above embodiments, such as Figure 5 As shown, the following steps are included:

[0039] Step S101: collecting first color data of the screen to be detected at a first refresh frequency.

[0040] Specifically, in this step, color data of the screen to be detected at the first refresh frequency is collected as the first color data, for example, it can be RGB color model data, XYZ color model data, etc. of the screen to be detected.

[0041] Step S102: collecting second color data of the screen to be detected at a second refresh frequency.

[0042] Specifically, in this step, color data of the screen to be detected at the second refresh frequency is collected as second color data, for example, it can be RGB color model data, XYZ color model data, etc. of the screen to be detected.

[0043] It is understandable that the first color data and the second color data are color data of the same type. For example, if the first color data is RGB color model data, then the second color data should also be RGB color model data to ensure the accuracy of the detection result.

[0044] Step S103: Calculate and obtain the flicker value of the screen to be detected according to the first color data and the second color data.

[0045] Specifically, in this step, the first color data and the second color data are first converted into a first Lab space index and a second Lab space index respectively, and then the flicker value is calculated according to the first Lab space index and the second Lab space index.

[0046] The first color data and the second color data are converted into the first lab space index and the second l a When the first color data and the second color data are XYZ color models, the formula can be used to calculate the color space index. The first color data is converted to obtain the first Lab space index, and the second color data is converted to obtain the second l a b space index, wherein X, Y, and Z are color coordinates represented by the first color data or the second color data in an XYZ color model, and X0, Y0, and Z0 are constants.

[0047] When the first color data and the second color data are represented by the RGB color model, the formula X=0.412453R+0.357580G+0.180423B can be used.

[0048] Y=0.212671R+0.715160G+0.072169B,

[0049] Z=0.019334R+0.119193G+0.950227B converts the first color data represented by the RGB model into the XYZ color model, and at the same time converts the second color data represented by the RGB model into the XYZ color model.

[0050] It is not difficult to find that this embodiment is an example of a screen detection method corresponding to the first embodiment, and this embodiment can be implemented in conjunction with the first embodiment. The relevant technical details and technical effects mentioned in the first embodiment are still valid in this embodiment, and to reduce repetition, they are not repeated here. Accordingly, the relevant technical details mentioned in this embodiment can also be applied to the first embodiment.

[0051] The fourth embodiment of the present invention relates to a screen detection method, which is applied to the screen display device provided by the above embodiments, such as Figure 6 As shown, the following steps are included:

[0052] Step S201: collecting first color data of the screen to be detected at a first refresh frequency.

[0053] Step S202: Control the screen to be detected to switch from the first refresh rate to the second refresh rate.

[0054] Specifically, in this step, the screen display device controls the screen to be detected to switch from the first refresh frequency to the second refresh frequency.

[0055] Step S203: collecting second color data of the screen to be detected at the second refresh frequency.

[0056] Step S204: Calculate and obtain the flicker value of the screen to be detected according to the first color data and the second color data.

[0057] It can be understood that steps S201 , S203 and S204 in this embodiment are substantially the same as steps S101 to S103 in the third embodiment, and are not described in detail here.

[0058] Compared with the prior art, the screen detection method provided in the fourth embodiment of the present invention retains all the technical effects of the third embodiment while automatically controlling the refresh frequency of the screen to be detected by the screen detection device to switch, thereby improving the overall automation capability of the screen detection device. Without the need for manual switching of the refresh frequency, it is more convenient to automate the switching process of the refresh frequency of the screen to be detected, thereby improving the convenience of the screen detection process.

[0059] The steps of the various methods above are divided only for the purpose of clear description. During implementation, they can be combined into one step or some steps can be split and decomposed into multiple steps. As long as they contain the same logical relationship, they are all within the scope of protection of this patent. Adding insignificant modifications or introducing insignificant designs to the algorithm or process without changing the core design of the algorithm and process are all within the scope of protection of this patent.

[0060] Those skilled in the art will understand that all or part of the steps in the above-mentioned embodiments can be implemented by instructing related hardware through a program, which is stored in a storage medium and includes a number of instructions for causing a device (which may be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the present application. The aforementioned storage medium includes: 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, etc., various media that can store program code.

[0061] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and that in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A screen detection device, characterized in that: include: The detection probe is only used to collect the first color data of the screen to be detected at the first refresh frequency and the second color data of the screen to be detected at the second refresh frequency. The detection probe is a spectrum detector, and the spectrum detector is used to collect the color data of the screen to be detected; a processor, configured to calculate a flicker value of the screen to be detected based only on the first color data and the second color data; The flicker value is calculated as follows: Where, ΔL * The parameters L of the first and second lab space indices are * The difference, Δa * is the parameter a of the first lab space index and the second lab space index * The difference, Δb * The parameter b of the first lab space index and the second lab space index is * The difference between Among them, the lab space indicators are converted according to color data, including: Using the formula The first color data is converted to obtain the first LAB space index, and the second color data is converted to obtain the second LAB space index, where X, Y, and Z are color coordinates of the first color data or the second color data represented by an XYZ color model, and X0, Y0, and Z0 are constants.

2. The screen detection device according to claim 1, characterized in that: The processor includes a screen interface, which is used to connect to the screen to be detected. The processor is also used to control the switching of the refresh frequency of the screen to be detected through the screen interface.

3. The screen detection device according to claim 2, characterized in that: The processor includes a display control module, and the display control module is used to control the screen to be detected to display the flicker value.

4. The screen detection device according to claim 1, wherein: Also includes: A fixing member connected to the detection probe, wherein the fixing member is used to fix the relative position between the detection probe and the screen to be detected when the detection probe collects the first color data and the second color data.

5. The screen detection device according to claim 4, characterized in that: The fixing member includes a main body, a clamping portion provided on the main body, and a fixing portion provided on the main body, wherein the fixing portion is used to fix the detection probe, and the clamping portion is used to clamp the screen to be detected.

6. The screen detection device according to claim 5, characterized in that: The fixing portion is movably arranged on the main body portion.

7. A screen detection method, characterized in that: include: Only first color data of the screen to be detected at a first refresh frequency is collected by the spectrum detector, and second color data of the screen to be detected at a second refresh frequency is collected; The processor calculates and obtains the flicker value of the screen to be detected based only on the first color data and the second color data; The processor calculates and obtains the flicker value of the screen to be detected according to the first color data and the second color data, specifically including: Converting the first color data to obtain a first Lab space index, and converting the second color data to obtain a second Lab space index; According to the formula Calculate the first lab space index and the second lab space index to obtain the flicker value Where, ΔL * The parameter L of the first lab space index and the second lab space index is * The difference, Δa * is the parameter a of the first lab space index and the second lab space index * The difference, Δb * The parameter b of the first lab space index and the second lab space index is * The difference between When the first color data and the second color data are respectively in XYZ color model, the formula is used The first color data is converted to obtain the first LAB space index, and the second color data is converted to obtain the second LAB space index, where X, Y, and Z are color coordinates of the first color data or the second color data represented by an XYZ color model, and X0, Y0, and Z0 are constants.

8. The screen detection method according to claim 7, characterized in that: When the first color data is represented by an RGB color model, before converting the first color data to obtain the first LAB space index, the method further includes: Using the formula X = 0.412453R + 0.357580G + 0.180423B, Y=0.212671R+0.715160G+0.072169B, Z=0.019334R+0.119193G+0.950227B The first color data is converted into an XYZ color model representation.

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