CN114038416B - Flicker determination method and flicker determination device - Google Patents
Flicker determination method and flicker determination device Download PDFInfo
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- CN114038416B CN114038416B CN202111233854.0A CN202111233854A CN114038416B CN 114038416 B CN114038416 B CN 114038416B CN 202111233854 A CN202111233854 A CN 202111233854A CN 114038416 B CN114038416 B CN 114038416B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The application discloses a flicker judgment method and a flicker judgment device, wherein the flicker judgment method comprises the following steps: acquiring a time domain brightness signal of which the brightness changes along with time when the brightness parameter of the panel to be tested is a preset brightness value; obtaining the flicker degree of the panel to be detected according to the time domain brightness signal; determining a flicker threshold value of the panel to be detected under the preset brightness value according to a calculation strategy corresponding to the brightness range in which the preset brightness value is located; and determining whether the panel to be detected flickers under a preset brightness value or not based on the flicker degree of the panel to be detected and the flicker degree threshold value. The flicker judging method provided by the application can simplify the process of judging whether the panel to be detected flickers.
Description
Technical Field
The present disclosure relates to display panels, and particularly to a flicker determination method and a flicker determination apparatus.
Background
With the application of LTPO (Low Temperature Polycrystalline Oxide) technology, the source leakage rate of OLED (Organic Light-Emitting Diode) display panels is significantly improved, and the refresh frequency can be further reduced, so as to achieve the purposes of saving power consumption and improving image quality by using a lower refresh frequency.
Although the display panel with low refresh rate has many advantages, it has a prominent problem of periodical flicker, so that it is necessary to determine whether the display panel flickers or not in the manufacturing process of the display panel in order to debug the display panel.
The inventor of the present application finds that, in the manufacturing process, the process of determining whether the display panel flickers is complicated, thereby causing low production efficiency.
Disclosure of Invention
The application provides a flicker judgment method and a flicker judgment device, which can simplify the process of judging whether a panel to be detected flickers.
A first aspect of an embodiment of the present application provides a flicker determination method, where the method includes obtaining a time-domain luminance signal indicating that luminance changes with time when a luminance parameter of a panel to be measured is a preset luminance value; obtaining the flicker degree of the panel to be detected according to the time domain brightness signal; determining a flicker threshold value of the panel to be detected under the preset brightness value according to a calculation strategy corresponding to the brightness range in which the preset brightness value is located; and determining whether the panel to be detected flickers under the preset brightness value or not based on the flicker degree of the panel to be detected and the flicker degree threshold value.
The step of determining the flicker threshold of the panel to be tested under the preset brightness value according to the calculation strategy corresponding to the brightness range in which the preset brightness value is located includes: if the preset brightness value is larger than or equal to a brightness threshold value, determining the flicker threshold value of the panel to be detected based on a first calculation strategy; otherwise, determining the flicker threshold of the panel to be tested based on a second calculation strategy.
Wherein the step of determining the flicker degree threshold of the panel to be tested based on the first calculation strategy comprises: determining a first product of a natural logarithm value of the preset brightness value and a first parameter; obtaining the flicker threshold of the panel to be detected according to a difference value between a second parameter and the first product, wherein the first parameter and the second parameter are both positive numbers; and/or, the step of determining the flicker threshold of the panel to be tested based on a second calculation strategy comprises: determining a second product of a natural logarithm value of a square value of the preset brightness value and a third parameter; and obtaining the flicker degree threshold value of the panel to be detected according to the sum of a fourth parameter and the second product, wherein the third parameter and the fourth parameter are positive numbers.
The step of obtaining the flicker degree of the panel to be tested according to the time domain brightness signal comprises the following steps: converting the time domain brightness signal from a time domain to a frequency domain to obtain a frequency domain brightness signal; processing the frequency domain brightness signal based on a preset strategy to obtain a target frequency domain brightness signal; converting the target frequency domain luminance signal from a frequency domain to a time domain to obtain a target time domain luminance signal; and obtaining the flicker degree of the panel to be detected according to the target time domain brightness signal.
Wherein, the step of processing the frequency domain luminance signal based on a preset strategy to obtain a target frequency domain luminance signal comprises: and according to the corresponding relation between the frequency and the weight in the human eye flicker sensitivity curve, multiplying the energy amplitude corresponding to each frequency in the frequency domain brightness signal by the corresponding weight to obtain the target frequency domain brightness signal.
The step of obtaining the flicker degree of the panel to be detected according to the time domain brightness signal comprises the following steps: obtaining the sub-flicker degrees of the panel to be detected in a plurality of time periods which are sequentially set according to the time domain brightness signal, wherein two adjacent time periods are partially overlapped; and determining the flicker degree of the panel to be tested according to the sub-flicker degrees of the panel to be tested in the time periods.
The step of obtaining the sub-flicker degrees of the panel to be tested in a plurality of time periods which are sequentially set according to the time domain brightness signal comprises the following steps: respectively determining an average brightness value, a maximum brightness value and a minimum brightness value of the panel to be detected in each time period of the time periods according to the time domain brightness signal; respectively determining the brightness difference value between the maximum brightness value and the minimum brightness value in each time period; and respectively determining the percentage of the brightness difference value and the average brightness value in each time period to obtain the sub-flicker degree of the panel to be tested in a plurality of time periods.
The step of determining the flicker degree of the panel to be tested according to the sub-flicker degrees of the panel to be tested in the time periods comprises the following steps: and determining the maximum value of the sub-flicker degrees of the panel to be tested in a plurality of time periods as the flicker degree of the panel to be tested.
Wherein, the step of determining whether the panel to be tested flickers under the preset brightness value based on the flicker degree of the panel to be tested and the flicker degree threshold value comprises: determining the ratio of the flicker degree of the panel to be tested to the flicker degree threshold value; if the ratio is larger than a ratio threshold value, determining that the panel to be tested flickers under the preset brightness value, otherwise, determining that the panel to be tested does not flick under the preset brightness value.
A second aspect of the embodiments of the present application provides a flicker determining apparatus, which includes a processor, a memory, and a communication circuit, where the processor is respectively coupled to the memory and the communication circuit, the memory stores program data, and the processor implements the steps in the foregoing method by executing the program data in the memory.
The beneficial effects are that: the flicker threshold value of the panel to be detected under the preset brightness value is determined according to the calculation strategy corresponding to the brightness range where the preset brightness value is located, so that the corresponding flicker threshold value can be obtained according to the same calculation strategy as long as the preset brightness value is in the same brightness range, operation can be simplified, and the process of judging whether the panel to be detected flickers is simplified.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:
FIG. 1 is a schematic flow chart diagram illustrating an embodiment of a flicker determination method of the present application;
FIG. 2 is a schematic flowchart of step S120 in an application scenario in FIG. 1;
fig. 3 is a diagram of a conversion process of a frequency domain luminance signal to a target frequency domain luminance signal;
FIG. 4 is a schematic flowchart of step S120 in FIG. 1 in another application scenario;
FIG. 5 is a diagram of a time domain luminance signal in an application scenario;
FIG. 6 is a schematic flow chart of step S120 in FIG. 1 in another application scenario;
FIG. 7 is a schematic structural diagram of an embodiment of a flicker determination device according to the present application;
FIG. 8 is a schematic structural diagram of an embodiment of a computer-readable storage medium according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of the flicker determining method of the present application, and the method includes:
s110: and acquiring a time domain brightness signal of which the brightness changes along with time when the brightness parameter of the panel to be tested is a preset brightness value.
It should be noted that the panel to be tested may be any type of panel, such as an LCD (Liquid Crystal Display) Display panel, or an OLED Display panel.
Specifically, judging whether the panel to be detected flickers is to judge whether the panel to be detected flickers under a certain brightness parameter, so that the brightness parameter of the panel to be detected is set to be a preset brightness value, the panel to be detected displays the panel under the preset brightness value, and then a time domain brightness signal of which the display brightness changes along with time is collected in the display process of the panel to be detected, wherein for convenience of description, the time domain brightness signal is recorded as Lum (t).
S120: and obtaining the flicker degree of the panel to be detected according to the time domain brightness signal.
Specifically, the time domain luminance signal represents a luminance change process of the panel to be tested under a preset luminance value, so that the flicker degree of the panel to be tested can be obtained according to the time domain luminance signal.
S130: and determining a flicker threshold value of the panel to be detected under the preset brightness value according to a calculation strategy corresponding to the brightness range in which the preset brightness value is located.
Specifically, the correspondence between the calculation policy and the luminance range is stored in advance, that is, different luminance ranges correspond to different calculation policies. Therefore, in step S130, the brightness range in which the preset brightness value is located is first determined, then the calculation strategy corresponding to the brightness range is searched in the pre-stored corresponding relationship, and then the flicker threshold of the panel to be measured under the preset brightness value is obtained according to the calculation strategy.
It can be understood that the calculation strategies corresponding to the preset brightness values within the same brightness range are the same, that is, the flicker threshold of the panel to be tested at different preset brightness values within the same brightness range can be obtained according to the same calculation strategy.
In the prior art, when the flicker threshold of the panel to be tested under the preset brightness value needs to be determined, the flicker threshold corresponding to the preset brightness value is usually searched in a pre-stored table, and in the pre-stored table, different preset brightness values all correspond to one flicker threshold, that is, each time the flicker threshold of the panel to be tested under the preset brightness value is determined, the searching in the pre-stored table is needed, which is tedious to operate.
From the above analysis, when determining the flicker threshold of the panel to be tested under the preset brightness value, the application can obtain the corresponding flicker threshold according to the same calculation strategy as long as the preset brightness value is within the same brightness range, thereby simplifying the operation.
In an application scenario, step S130 includes: if the preset brightness value is larger than or equal to the brightness threshold value, determining a flicker threshold value of the panel to be detected based on a first calculation strategy; otherwise, based on the second calculation strategy, determining the flicker threshold of the panel to be detected.
Specifically, in the application scenario, in order to further simplify the step of determining the flicker threshold, the determination of the flicker threshold is divided into two cases, one is that the preset brightness value is greater than or equal to the brightness threshold, and the other is that the preset brightness value is smaller than the brightness threshold, where the brightness threshold may also be flexibly set according to the actual scenario, for example, the brightness threshold is 1nit, 2nit, or 3 nit.
In a specific example, the brightness threshold is 1nit, and determining the flicker threshold of the panel to be tested based on the first calculation strategy includes: calculating the flicker threshold value by using the following formula I:
the formula I is as follows: LFMA th ＝a 0 -b 0 X ln (M), where M is a predetermined brightness value, LFMA th As flicker threshold, b 0 Is a first parameter, a 0 The first parameter and the second parameter are positive numbers, and both of them can be flexibly set according to the actual scene, and are not limited herein.
At this time, determining the flicker threshold of the panel to be tested based on a second calculation strategy comprises: calculating the flicker threshold value by using the following formula two:
the formula II is as follows: LFMA th ＝a 1 +b 1 ×ln(M) 2 Where M is a predetermined brightness value, LFMA th As flicker threshold, b 1 Is a third parameter, a 1 The third parameter and the fourth parameter are positive numbers, and both of them can be flexibly set according to the actual scene, and are not limited herein.
Wherein, in this particular embodiment, the second parameter a 0 May be associated with the fourth parameter a 1 Equality, e.g. second parameter a 0 May be associated with the fourth parameter a 1 Are all 0.015, the first parameter b 0 0.0014, third parameter b 1 Is 0.03.
In other embodiments, the flicker threshold may be calculated by using other formulas, and the present application is not limited to the above formula one and formula two.
S140: and determining whether the panel to be detected flickers under a preset brightness value or not based on the flicker degree of the panel to be detected and the flicker degree threshold value.
Specifically, the flicker degree of the panel to be tested is compared with the flicker degree threshold value, so that whether the panel to be tested flickers under a preset brightness value can be determined. After determining that the panel to be tested flickers at the preset brightness value, factors (such as a common electrode signal of the panel to be tested, a voltage signal of a source electrode, and the like) influencing the flickers of the panel to be tested can be adjusted, so that the flicker degree of the panel to be tested meets the requirement.
In an application scenario, step S140 includes: the method comprises the steps of firstly determining the ratio of the flicker degree of a panel to be detected to a flicker degree threshold value, then determining that the panel to be detected flickers under a preset brightness value if the obtained ratio is larger than the ratio threshold value, and otherwise determining that the panel to be detected does not flick under the preset brightness value. The ratio threshold value can be set according to parameters such as the type of the panel to be tested, the use scene of the panel to be tested or actual use requirements, and the flexibility is high.
In another application scenario, step S140 may further include: if the flicker degree of the panel to be detected is larger than the flicker degree threshold value, determining that the panel to be detected flickers under a preset brightness value, otherwise, determining that the panel to be detected does not flick under the preset brightness value, or if the flicker degree of the panel to be detected is larger than the flicker degree threshold value and the difference value between the flicker degree threshold value and the difference value threshold value is larger than the difference value threshold value, determining that the panel to be detected flickers under the preset brightness value, otherwise, determining that the panel to be detected does not flickers under the preset brightness value.
In summary, how to determine whether the panel to be tested flickers under the preset brightness value based on the flicker degree of the panel to be tested and the flicker degree threshold value can be flexibly set according to actual requirements, which is not limited herein.
Referring to fig. 2, in an application scenario, the step S120 of obtaining the flicker degree of the panel to be tested includes:
s1201: and converting the time domain brightness signal from the time domain to the frequency domain to obtain a frequency domain brightness signal.
Specifically, the time-domain luminance signal Lum (t) may be converted from the time domain to the frequency domain using FFT (fast fourier transform). Wherein the frequency domain luminance signal characterizes the amplitude energy distribution at different frequencies.
S1202: and processing the frequency domain brightness signal based on a preset strategy to obtain a target frequency domain brightness signal.
In an application scenario, considering that human eyes have different sensitivities to flicker degrees of different frequencies, for example, the human eyes are not sensitive to flicker degrees of high frequencies, with reference to fig. 3, step S122 includes: and according to the corresponding relation between the frequency and the weight in the human eye flicker sensitivity curve, multiplying the energy amplitude corresponding to each frequency in the frequency domain brightness signal by the corresponding weight to obtain a target frequency domain brightness signal.
Specifically, in the flicker sensitivity curve of the human eye, each frequency corresponds to a weight, which represents the sensitivity of the human eye to the flicker at the frequency, wherein a higher weight corresponding to the frequency indicates that the human eye is more sensitive to the flicker at the frequency, and a lower weight corresponding to the frequency indicates that the human eye is less sensitive to the flicker at the frequency.
When the frequency domain luminance signal is processed, the corresponding weight is searched for corresponding to each frequency in the frequency domain luminance signal, and then the energy amplitude corresponding to each frequency is multiplied by the corresponding weight to obtain the target frequency domain luminance signal.
For example, in the application scenario of fig. 3, after weight matching, the energy amplitude corresponding to the high frequency (60 hz) is decreased, so that the flicker level insensitive to human eyes can be filtered, and the flicker level of the panel to be measured, which is finally obtained subsequently, can be closer to the subjective feeling of human eyes.
In another application scenario, the frequency domain luminance signal may also be processed by using a corresponding strategy according to other actual requirements, which is not limited herein. For example, the energy amplitudes corresponding to the frequencies within the preset frequency range are screened to obtain the target frequency domain luminance signal, that is, the energy amplitudes corresponding to the frequencies not within the preset frequency range are discarded.
S1203: and converting the target frequency domain luminance signal from a frequency domain to a time domain to obtain a target time domain luminance signal.
Specifically, after the target frequency domain luminance signal is obtained, the target frequency domain luminance signal may be converted from the frequency domain to the time domain by using inverse fast fourier transform, so as to obtain a target time domain luminance signal.
S1204: and obtaining the flicker degree of the panel to be detected according to the target time domain brightness signal.
The time domain brightness signal obtained through the steps can still represent a brightness change process of the panel to be detected under the preset brightness value, and therefore the flicker degree of the panel to be detected can be obtained according to the target time domain brightness signal.
Referring to fig. 4, in another application scenario, the step of obtaining the flicker degree of the panel to be tested in step S120 includes:
s1205: and obtaining the sub-flicker degrees of the panel to be detected in a plurality of time periods which are sequentially set according to the time domain brightness signal, wherein two adjacent time periods are partially overlapped.
In order to finally eliminate the flicker degree which is not easily perceived by human eyes and is caused by long interval time, the application scene ensures that the finally obtained flicker degree of the panel to be detected is consistent with the subjective feeling of the human eyes, and two adjacent time periods are partially overlapped, for example, in the figure 5, three time periods are set, which are respectively as follows: first time period t 1 To t 1 + T, second time period T 2 To t 2 + T, third time period T 3 To t 3 + T, wherein the adjacent first time period and second time period are partially overlapped, and the adjacent second time period and second time period are partially overlapped.
The time lengths of the time periods in the multiple time periods may be equal or different. When the time lengths of the time periods are equal, a window with a fixed length can be set on the time axis of the time domain brightness signal, the window is moved on the time axis of the time domain brightness signal according to a step length smaller than the window length, and after the window is moved each time, the sub-flicker degree of the panel to be detected in the window is calculated, so that the sub-flicker degrees of the panel to be detected in a plurality of time periods are obtained.
When the time lengths of the time periods in the plurality of time periods are equal, the time length T of each time period may be determined by using the following formula:
The sub-flicker LFMA' of the panel to be tested in each time period can be calculated by the following formula:
Wherein the average brightness value L avg The calculation formula of (c) is:
Wherein, when calculating the sub-flicker degree LFMA', the L of the denominator in the above formula can be used avg Is replaced by L max Or L min I.e. also using the formula
Or a formula
The sub-flicker degree LFMA' is calculated.
S1206: and determining the flicker degree of the panel to be tested according to the sub-flicker degrees of the panel to be tested in a plurality of time periods.
The maximum value of the sub-flicker degrees of the panel to be tested in multiple time periods may be determined as the flicker degree of the panel to be tested, or the average value of the sub-flicker degrees of the panel to be tested in multiple time periods may be determined as the flicker degree of the panel to be tested, which is not limited herein.
In another application scenario, the two methods of the application scenarios may also be combined, referring to fig. 6, in this case, the step of obtaining the flicker degree of the panel to be tested in step S120 includes:
s1207: and converting the time domain brightness signal from the time domain to the frequency domain to obtain a frequency domain brightness signal.
S1208: and processing the frequency domain brightness signal based on a preset strategy to obtain a target frequency domain brightness signal.
S1209: and converting the target frequency domain luminance signal from a frequency domain to a time domain to obtain a target time domain luminance signal.
Steps S1207 to S1209 are the same as steps S1201 to S1203, and reference may be made to the above related contents, which are not described herein again.
S1210: and obtaining the sub-flicker degrees of the panel to be detected in a plurality of time periods which are sequentially set according to the target time domain brightness signal, wherein two adjacent time periods are partially overlapped.
Different from the above application scenario, at this time, the sub-flicker degrees of the panel to be tested in a plurality of sequentially set time periods are obtained according to the target time domain luminance signal, for example, the target time domain luminance signal is denoted as Lum '(t), and at this time, the sub-flicker degree LFMA' of the panel to be tested in each time period can be calculated by using the following formula:
Wherein the average brightness value L a ′ vg The calculation formula of (2) is as follows:
S1211: and determining the flicker degree of the panel to be tested according to the sub-flicker degrees of the panel to be tested in a plurality of time periods.
Similar to the above application scenario, at this time, the maximum value of the sub-flicker degrees of the panel to be tested in multiple time periods may be determined as the flicker degree of the panel to be tested, or the average value of the sub-flicker degrees of the panel to be tested in multiple time periods may be determined as the flicker degree of the panel to be tested, which is not limited herein.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the flicker determining device of the present application. The flicker determining device 200 includes a processor 210, a memory 220, and a communication circuit 230, wherein the processor 210 is respectively coupled to the memory 220 and the communication circuit 230, the memory 220 stores program data, and the processor 210 implements the steps of the method according to any of the above embodiments by executing the program data in the memory 220, wherein the detailed steps can be referred to the above embodiments and are not described herein again.
The flicker determining device 200 may be any device with algorithm processing capability, such as a computer and a mobile phone, and is not limited herein.
Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of a computer-readable storage medium according to the present application. The computer-readable storage medium 300 stores a computer program 310, the computer program 310 being executable by a processor to implement the steps of any of the methods described above.
The computer-readable storage medium 300 may be a device that can store the computer program 310, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, or may be a server that stores the computer program 310, and the server can send the stored computer program 310 to another device for operation, or can self-operate the stored computer program 310.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (8)
1. A flicker determination method, the method comprising:
acquiring a time domain brightness signal of which the brightness changes along with time when the brightness parameter of the panel to be tested is a preset brightness value;
obtaining the flicker degree of the panel to be detected according to the time domain brightness signal;
determining a flicker threshold value of the panel to be detected under the preset brightness value according to a calculation strategy corresponding to the brightness range in which the preset brightness value is located;
determining whether the panel to be tested flickers under the preset brightness value or not based on the flicker degree of the panel to be tested and the flicker degree threshold value;
the step of determining the flicker threshold of the panel to be detected under the preset brightness value according to the calculation strategy corresponding to the brightness range in which the preset brightness value is located includes:
if the preset brightness value is larger than or equal to a brightness threshold value, determining the flicker threshold value of the panel to be detected based on a first calculation strategy;
otherwise, determining the flicker threshold of the panel to be tested based on a second calculation strategy;
wherein the step of determining the flicker threshold of the panel under test based on the first calculation strategy comprises:
determining a first product of a natural logarithm value of the preset brightness value and a first parameter;
obtaining the flicker degree threshold value of the panel to be detected according to the difference value of a second parameter and the first product, wherein the first parameter and the second parameter are positive numbers;
and/or, the step of determining the flicker threshold of the panel to be tested based on a second calculation strategy comprises:
determining a second product of a natural logarithm value of a square value of the preset brightness value and a third parameter;
and obtaining the flicker degree threshold value of the panel to be detected according to the sum of a fourth parameter and the second product, wherein the third parameter and the fourth parameter are positive numbers.
2. The method according to claim 1, wherein the step of obtaining the flicker degree of the panel under test according to the time-domain luminance signal comprises:
converting the time domain brightness signal from a time domain to a frequency domain to obtain a frequency domain brightness signal;
processing the frequency domain brightness signal based on a preset strategy to obtain a target frequency domain brightness signal;
converting the target frequency domain luminance signal from a frequency domain to a time domain to obtain a target time domain luminance signal;
and obtaining the flicker degree of the panel to be detected according to the target time domain brightness signal.
3. The method according to claim 2, wherein the step of processing the frequency-domain luminance signal based on a preset strategy to obtain a target frequency-domain luminance signal comprises:
and according to the corresponding relation between the frequency and the weight in the human eye flicker sensitivity curve, multiplying the energy amplitude corresponding to each frequency in the frequency domain brightness signal by the corresponding weight to obtain the target frequency domain brightness signal.
4. The method according to claim 1, wherein the step of obtaining the flicker degree of the panel to be tested according to the time-domain luminance signal comprises:
obtaining the sub-flicker degrees of the panel to be detected in a plurality of time periods which are sequentially set according to the time domain brightness signal, wherein two adjacent time periods are partially overlapped;
and determining the flicker degree of the panel to be tested according to the sub-flicker degrees of the panel to be tested in a plurality of time periods.
5. The method according to claim 4, wherein the step of obtaining the sub-flicker degrees of the panel to be tested in a plurality of time periods sequentially set according to the time-domain luminance signal comprises:
respectively determining an average brightness value, a maximum brightness value and a minimum brightness value of the panel to be detected in each time period of the time periods according to the time domain brightness signal;
respectively determining the brightness difference value between the maximum brightness value and the minimum brightness value in each time period;
and respectively determining the percentage of the brightness difference value and the average brightness value in each time period to obtain the sub-flicker degree of the panel to be tested in a plurality of time periods.
6. The method according to claim 4, wherein the step of determining the flicker degree of the panel under test according to the sub-flicker degrees of the panel under test in a plurality of time periods comprises:
and determining the maximum value of the sub-flicker degrees of the panel to be tested in a plurality of time periods as the flicker degree of the panel to be tested.
7. The method according to claim 1, wherein the step of determining whether the panel to be tested flickers at the preset brightness value based on the flicker degree of the panel to be tested and the flicker degree threshold value comprises:
determining the ratio of the flicker degree of the panel to be tested to the flicker degree threshold value;
if the ratio is larger than a ratio threshold value, determining that the panel to be tested flickers under the preset brightness value, otherwise, determining that the panel to be tested does not flick under the preset brightness value.
8. A flicker determination device, comprising a processor, a memory and a communication circuit, wherein the processor is coupled to the memory and the communication circuit, respectively, and the memory stores program data therein, and the processor implements the steps of the method according to any one of claims 1 to 7 by executing the program data in the memory.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080097554A (en) * | 2007-05-02 | 2008-11-06 | 삼성전자주식회사 | Method for tuning flicker, tuning circuit for performing the same and display device having the tuning circuit |
| JP2009251069A (en) * | 2008-04-02 | 2009-10-29 | Sony Corp | Flicker detector, lighting condition setting device, display panel, electronic equipment, and flicker detection method |
| CN101901574A (en) * | 2010-08-04 | 2010-12-01 | 青岛海信电器股份有限公司 | Regulating method, regulator and regulating system of common reference voltage |
| CN104700759A (en) * | 2015-03-17 | 2015-06-10 | 武汉精测电子技术股份有限公司 | Device and method for analyzing brightness spectrum of display panel |
| CN106652858A (en) * | 2016-09-29 | 2017-05-10 | 福州大学 | Automatic detection system and method for compatibility anomaly of display |
| CN110428761A (en) * | 2019-07-10 | 2019-11-08 | 武汉精立电子技术有限公司 | A kind of method, apparatus and system of non-contact measurement Flicker value of liquid crystal module |
-
2021
- 2021-10-22 CN CN202111233854.0A patent/CN114038416B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080097554A (en) * | 2007-05-02 | 2008-11-06 | 삼성전자주식회사 | Method for tuning flicker, tuning circuit for performing the same and display device having the tuning circuit |
| JP2009251069A (en) * | 2008-04-02 | 2009-10-29 | Sony Corp | Flicker detector, lighting condition setting device, display panel, electronic equipment, and flicker detection method |
| CN101901574A (en) * | 2010-08-04 | 2010-12-01 | 青岛海信电器股份有限公司 | Regulating method, regulator and regulating system of common reference voltage |
| CN104700759A (en) * | 2015-03-17 | 2015-06-10 | 武汉精测电子技术股份有限公司 | Device and method for analyzing brightness spectrum of display panel |
| CN106652858A (en) * | 2016-09-29 | 2017-05-10 | 福州大学 | Automatic detection system and method for compatibility anomaly of display |
| CN110428761A (en) * | 2019-07-10 | 2019-11-08 | 武汉精立电子技术有限公司 | A kind of method, apparatus and system of non-contact measurement Flicker value of liquid crystal module |
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