CN114323576A - Screen detection device and screen detection method - Google Patents
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Abstract
The invention relates to the technical field of display, and discloses a screen detection device and a screen detection method, wherein the screen detection device comprises: the detection probe is used for acquiring first color data of a screen to be detected at a first refreshing frequency and second color data of the screen to be detected at a second refreshing frequency; and the processor is used for calculating the flicker value of the screen to be detected according to the first color data and the second color data. The screen detection device and the screen detection method provided by the embodiment of the invention have the advantage of realizing the detection of the flicker degree of the screen.
Description
Technical Field
The invention relates to the technical field of display, in particular to a screen detection device and a screen detection method.
Background
The refresh rate refers to the number of times the electron beam repeatedly scans an image on the screen, and the higher the refresh rate, the better the stability of the displayed image. For the currently popular liquid crystal display or LED display, the refresh rate can be understood as the number of times that the screen is refreshed per second, and the refresh rate can be generally divided into a vertical refresh rate and a horizontal refresh rate, and the currently common refresh rate is generally referred to as the vertical refresh rate. The vertical refresh rate indicates the number of redraws of an image of a screen per second, that is, the number of screen refreshes per second, 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 frequency, the more image flicker and jitter.
At present, the display screen of the mobile phone in the market generally supports a display technology of switching back and forth among multiple refresh rates, however, the inventor of the present invention finds that, in actual use, when some display screens with defects are suddenly switched in the refresh rate, the screen may flicker, which affects normal use of users. However, in the prior art, the flicker degree of the screen cannot be detected, so that the display screen with the serious flicker defect is still put into the market, and the use experience of the user is influenced.
Disclosure of Invention
The invention aims to provide a screen detection device and a screen detection method, which are used for detecting the flicker degree of a screen.
In order to solve the above technical problem, an embodiment of the present invention provides a screen detecting apparatus, including: the detection probe is used for acquiring first color data of a screen to be detected at a first refreshing frequency and second color data of the screen to be detected at a second refreshing frequency; and the processor is used for calculating the flicker value of the screen to be detected according to the first color data and the second color data.
The embodiment of the invention also provides a screen detection method, which comprises the following steps: collecting first color data of a screen to be detected at a first refreshing frequency, and collecting second color data of the screen to be detected at a second refreshing frequency; and calculating and acquiring the flicker value of the screen to be detected according to the first color data and the second color data.
Compared with the prior art, the method and the device have the advantages that the first color data of the screen to be detected at the first refreshing frequency and the second color data of the screen to be detected at the second refreshing frequency are acquired through the detection probe, then the flicker value of the screen to be detected is obtained through calculation according to the first color data and the second color data, the flicker degree of the screen to be detected can be represented through the flicker value, accordingly, the flicker degree of the screen to be detected is detected, and the use experience of a user is guaranteed.
Preferably, the processor includes a screen interface, the screen interface is used for being connected with the screen to be detected, and the processor is further used for controlling and switching the refresh frequency of the screen to be detected through the screen interface. The screen interface is arranged, manual switching of the refreshing frequency is not needed, the processor can automatically control the refreshing frequency of the screen to be detected through the screen interface, automatic processing can be conveniently carried out on the switching process of the refreshing frequency of the screen to be detected, and convenience of the screen detection process is improved.
Preferably, the processor includes a display control module, and the display control module is configured to control the to-be-detected screen to display the flicker value. The display control module is arranged to display the flicker value on the screen to be detected, so that detection personnel can read the flicker value more conveniently, and the convenience of the screen detection process is improved.
Preferably, the detection probe is a spectrum detector, and the spectrum detector is used for collecting color data of the screen to be detected.
Preferably, the method further comprises the following steps: and the fixing piece is used for fixing 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. Set up the mounting and fix test probe when gathering first colour data and second colour data for test probe and wait to detect the relative position between the screen when gathering first colour data and second colour data unchangeable, guarantee first colour data and second colour data for waiting to detect the light that screen same position was gathered, avoid the test probe to detect wait to detect the position change of screen and produce the influence to the testing result, promote the accuracy of testing result.
Preferably, the fixing member includes a main body portion, a clamping portion disposed on the main body portion, and a fixing portion disposed on the main body portion, the fixing portion is configured to fix the detection probe, and the clamping portion is configured to clamp the screen to be detected.
Preferably, the fixing portion is movably provided on the main body portion. The fixing piece is movably arranged on the main body part, so that the detection probe can flexibly detect the screen to be detected from different directions and positions, and the accuracy of a detection result is further improved.
Preferably, said method is according toCalculating to obtain the flicker value of the screen to be detected by the first color data and the second color data, which specifically comprises: 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
Calculating the first lab space index and the second lab space index to obtain the flicker value
Wherein, Δ L*A parameter L being the first lab space index and the second lab space index*A difference of (a)*A parameter a of the first lab space index and the second lab space index*Difference of (a) Δ b*A parameter b being the first lab space index and the second lab space index*The difference of (a).
Preferably, the converting the first color data to obtain the first lab space index includes: using the formula
Converting the first color data to obtain a first lab space index, wherein X, Y, Z is a color coordinate represented by an XYZ color model according to the first color data, X0、Y0、Z0Is a constant.
Preferably, when the first color data is represented by an RGB color model, before the converting the first color data into 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，
Z0.019334R +0.119193G +0.950227B converts the first color data into an XYZ color model representation.
Drawings
Fig. 1 is a schematic structural diagram of a screen detecting device according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a screen inspection apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a screen inspection apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a screen inspection apparatus according to a second embodiment of the present invention;
FIG. 5 is a flowchart illustrating a screen inspection method according to a third embodiment of the present invention;
fig. 6 is a flowchart illustrating a screen detection method according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a screen inspection apparatus, which is specifically configured as shown in fig. 1, and includes: a test probe 10 and a processor 20 communicatively coupled to the test probe 10. The detection probe 10 is used for acquiring first color data of the screen 100 to be detected at a first refresh frequency and second color data of the screen 100 to be detected at a second refresh frequency; the processor 20 is configured to calculate a flicker value of the screen 100 to be detected according to the first color data and the second color data.
Compared with the prior art, the detection probe 10 is used for collecting first color data of the screen 100 to be detected at a first refreshing frequency and second color data of the screen to be detected at a second refreshing frequency, then the processor 20 calculates the flicker value of the screen to be detected according to the first color data and the second color data, and the flicker degree of the screen 100 to be detected can be represented through the flicker value, so that the flicker degree of the screen 100 to be detected can be detected, and the use experience of a user is guaranteed.
Reference will now be made in detail to implementations of the present invention, with the understanding that the following is illustrative of some specific implementations of the invention and is not intended to represent the only implementations described below.
Preferably, in an embodiment of the present invention, as shown in fig. 2, the processor 20 includes a screen interface 21, the screen interface 21 is configured to be connected to the screen 100 to be detected, and after the screen interface 21 is connected to the screen 100 to be detected, the processor 20 can control to switch the refresh frequency of the screen 100 to be detected through the screen interface 21. That is, the detection probe 10 first acquires first color data of the screen 100 to be detected at a first refresh frequency, then the processor 20 controls the screen 100 to be detected to switch the refresh frequency to a second refresh frequency through the screen interface 21, the detection probe 10 acquires second color data of the screen 100 to be detected at the second refresh frequency, and finally the processor 20 calculates the flicker value of the screen 100 to be detected according to the first color data and the second color data. So set up, can promote the holistic automatic ability of screen detection device, need not the manual work and carry out the switching of frequency of refreshing, can be more convenient for treat the switching process of the refresh frequency of detecting screen 100 and carry out automated processing, promote the convenience of screen testing process.
Preferably, in another embodiment of the present invention, as shown in fig. 3, the processor 20 further includes a display control module 22, and the display control module 22 is configured to control the screen 100 to be detected to display the flicker value. The display control module 22 is arranged to display the flicker value on the screen 100 to be detected, so that the flicker value can be read by a detection person more conveniently, and the convenience of the screen detection process is improved. Specifically, in the present embodiment, the processor 20 may control the screen 100 to be detected to display the flicker value through the screen interface 21.
Specifically, in the present embodiment, the detecting probe 10 is a spectrum detector, and the spectrum detector 10 is used for collecting color data of the screen 100 to be detected, and may be, for example, an RGB color model, XYZ color model data, or the like for detecting the screen 100 to be detected.
A second embodiment of the present invention relates to a screen detecting apparatus. The second embodiment is substantially the same as the first embodiment, and also comprises a detection probe 10 and a processor 20, and mainly has the following differences: in the second embodiment of the present invention, as shown in fig. 4, the present invention further includes: and the fixing member 30 is connected to the detection probe 10, and the fixing member 30 is configured to fix a relative position between the detection probe 10 and the screen 100 to be detected when the detection probe 10 acquires the first color data and the second color data.
Compared with the prior art, the second embodiment of the invention maintains all technical effects of the first embodiment, and simultaneously, the fixing member 30 is arranged 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 100 to be detected is not changed when the first color data and the second color data are collected, the first color data and the second color data are light collected by the detection probe 10 at the same position of the screen 100 to be detected, the influence on the detection result caused by the change of the relative position between the detection probe 10 and the screen 100 to be detected when the detection probe 10 detects the first color data and the second color data is avoided, and the accuracy of the detection result is improved.
Preferably, in the present embodiment, the fixing member 30 includes a main body portion 31, a clamping portion 32 provided on the main body portion 31, and a fixing portion 33 provided on the main body portion 31. The fixing portion 33 is used for fixing the detecting probe 10, and the holding portion 32 is used for holding the screen 100 to be detected. It should be understood that the foregoing is only a specific example of the fixing element 30 in the present embodiment, and is not limited thereto, and in other embodiments of the present invention, the fixing element 30 may also be of other structures, and only needs to ensure that the relative position between the detecting probe 10 and the screen 100 to be detected is fixed when the detecting probe 10 collects the first color data and the second color data, and may specifically be flexibly set according to actual needs.
Preferably, in the present embodiment, the fixing portion 33 is movably provided on the main body portion 31. The fixing member 33 is movably disposed on the main body 31, for example, along the direction AA' in fig. 4, so that the detecting probe 10 can flexibly detect the screen 100 to be detected from different directions and positions, and the accuracy of the detection result is further improved.
It should be noted that, all the modules referred to in the foregoing embodiments are logical modules, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may also be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.
A third embodiment of the present invention relates to a screen detection method, which is applied to the screen display device provided in the foregoing embodiments, and as shown in fig. 5, includes the following steps:
step S101: first color data of a screen to be detected at a first refreshing frequency are collected.
Specifically, in this step, color data of the screen to be detected at the first refresh frequency is collected as the first color data, and may be, for example, RGB color model data, XYZ color model data, and the like of the screen to be detected.
Step S102: and acquiring second color data of the screen to be detected at a second refreshing frequency.
Specifically, in this step, color data of the screen to be detected at the second refresh frequency is collected as the second color data, which may be, for example, RGB color model data, XYZ color model data, and the like of the screen to be detected.
It is to be understood that the aforementioned first color data and second color data are the same type of color data. For example, the first color data is RGB color model data, and the second color data is also RGB color model data, so as to ensure the accuracy of the detection result.
Step S103: and calculating and acquiring the flicker value of the screen to be detected according to the first color data and the second color data.
Specifically, in this step, first color data and second color data are respectively converted to obtain a first lab space index and a second lab space index, and then a flicker value is calculated according to the first lab space index and the second lab space index.
Respectively converting the first color data and the second color data to obtain a first lab space index and a second lab space indexaWhen the first color data and the second color data are respectively XYZ color models in the b space index, the color data can be directly expressed according to a formula
Converting the first color data to obtain a first lab space index, and converting the second color data to obtain a second lab space indexab space index, wherein X, Y, Z is the color coordinate expressed by XYZ color model according to the first color data or the second color data, X0、Y0、Z0Is a constant.
When the first color data and the second color data are represented by the RGB color model, the RGB color model may be represented by the formula X0.412453R +0.357580G +0.180423B,
Y＝0.212671R+0.715160G+0.072169B，
Z0.019334R +0.119193G +0.950227B converts the first color data of the RGB model representation into an XYZ color model representation, while converting the second color data of the RGB model representation into an XYZ color model representation.
It should be understood that this embodiment is an example of the screen detection method corresponding to the first embodiment, and the present embodiment may be implemented in cooperation with the first embodiment. The related technical details and technical effects mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.
A fourth embodiment of the present invention relates to a screen detection method applied to the screen display device provided in the foregoing embodiments, as shown in fig. 6, including the following steps:
step S201: first color data of a screen to be detected at a first refreshing frequency are collected.
Step S202: and controlling the screen to be detected to be switched from the first refreshing frequency to the second refreshing frequency.
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.
Step S203: and acquiring second color data of the screen to be detected at a second refreshing frequency.
Step S204: and calculating and acquiring the flicker value of the screen to be detected according to the first color data and the second color data.
It is understood that steps S201, S203, and S204 in the present embodiment are substantially the same as steps S101 to S103 in the third embodiment, and are not described again here.
Compared with the prior art, the screen detection method provided by the fourth embodiment of the invention can automatically control the refresh frequency of the screen to be detected to switch through the screen detection device while keeping all the technical effects of the third embodiment, thereby improving the overall automation capability of the screen detection device, avoiding manual switching of the refresh frequency, facilitating the automatic processing of the switching process of the refresh frequency of the screen to be detected and improving the convenience of the screen detection process.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the steps contain the same logical relationship, which is within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
Those skilled in the art can understand that all or part of the steps in the method of the foregoing embodiments may be implemented by a program to instruct related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A screen detecting apparatus, comprising:
the detection probe is used for acquiring first color data of a screen to be detected at a first refreshing frequency and second color data of the screen to be detected at a second refreshing frequency;
and the processor is used for calculating the flicker value of the screen to be detected according to the first color data and the second color data.
2. The screen detecting device according to claim 1, wherein the processor includes a screen interface, the screen interface is configured to be connected to the screen to be detected, and the processor is further configured to control switching of a refresh frequency of the screen to be detected through the screen interface.
3. The screen detecting device according to claim 2, wherein the processor includes a display control module, and the display control module is configured to control the screen to be detected to display the flicker value.
4. The screen detecting device according to claim 1, wherein the detecting probe is a spectral detector for collecting color data of the screen to be detected.
5. The screen detecting device according to claim 1, further comprising: and the fixing piece is used for fixing 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.
6. The screen detecting device according to claim 5, wherein the fixing member includes a main body portion, a holding portion provided on the main body portion, and a fixing portion provided on the main body portion, the fixing portion being configured to fix the detecting probe, the holding portion being configured to hold the screen to be detected;
preferably, the fixing portion is movably provided on the main body portion.
7. A screen detection method, comprising:
collecting first color data of a screen to be detected at a first refreshing frequency, and collecting second color data of the screen to be detected at a second refreshing frequency;
and calculating and acquiring the flicker value of the screen to be detected according to the first color data and the second color data.
8. The screen detecting method according to claim 7, wherein the calculating and obtaining the flicker value of the screen to be detected according to the first color data and the second color data specifically comprises:
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
Calculating the first lab space index and the second lab space index to obtain theFlicker value
Wherein, Δ L*A parameter L being the first lab space index and the second lab space index*A difference of (a)*A parameter a of the first lab space index and the second lab space index*Difference of (a) Δ b*A parameter b being the first lab space index and the second lab space index*The difference of (a).
9. The screen detecting method of claim 8, wherein the converting the first color data into a first lab space index comprises:
using the formula
Converting the first color data to obtain a first lab space index, wherein X, Y, Z is a color coordinate represented by an XYZ color model according to the first color data, X0、Y0、Z0Is a constant.
10. The screen detecting method according to claim 9, wherein when the first color data is represented by an RGB color model, before the converting the first color data into the first lab space index, the method further comprises:
using the formula X0.412453R +0.357580G +0.180423B,
Y＝0.212671R+0.715160G+0.072169B，
Z0.019334R +0.119193G +0.950227B converts the first color data into an XYZ color model representation.
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| JPH10164398A (en) * | 1996-11-27 | 1998-06-19 | Mitsubishi Electric Corp | Flicker elimination device |
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