CN114927097B

CN114927097B - Method and device for determining brightness duty ratio of display frame of display panel and storage medium

Info

Publication number: CN114927097B
Application number: CN202210705474.0A
Authority: CN
Inventors: 古建烁; 姜海斌; 王铁钢; 韩光光
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2023-05-23
Anticipated expiration: 2042-06-21
Also published as: CN114927097A

Abstract

The invention discloses a method and a device for determining the brightness ratio of a display frame of a display panel and a storage medium. The method comprises the following steps: acquiring brightness waveform data of n display frames of a display panel, wherein n is more than or equal to 2, n is a positive integer, the brightness waveform data comprises a plurality of brightness values of a plurality of brightness measuring points, and one brightness measuring point corresponds to one brightness value; calculating the brightness difference duty ratio of each brightness measuring point; determining the average brightness value of each display frame according to the brightness difference duty ratio of the brightness measuring points, and determining the brightness duty ratio of the first frame in the n display frames at least according to the average brightness value of the n display frames; according to the technical scheme, the automation of the calculation of the brightness ratio of the display frame is realized, and compared with the calculation of the brightness ratio of the display frame by manually pulling the data on the software interface, the calculation efficiency and accuracy of the brightness ratio of the display frame are improved, and further the smear phenomenon in the display panel is solved.

Description

Method and device for determining brightness duty ratio of display frame of display panel and storage medium

Technical Field

The present invention relates to the field of display technologies, and in particular, to a method and an apparatus for determining a luminance ratio of a display frame of a display panel, and a storage medium.

Background

Organic light emitting diode (Organic Light Emitting Diode, OLED) display panels have been listed as a very promising next generation display technology because of their advantages of thin, light weight, wide viewing angle, active light emission, continuous and adjustable emission color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high light emission efficiency, flexible display, etc.

However, in the current OLED display panel, due to the influence of the driving circuit and the device structure, when the display screen of the display panel is switched from the low gray level to the high gray level, the problem that the brightness of the first frame of the display screen with the high gray level is lower than the normal brightness generally exists, so that the smear phenomenon occurs on the display screen with the high gray level, and the visual experience of the user is poor. For example, when the display screen is switched from the black screen to the white screen, the red screen, the green screen or the blue screen, the brightness of the first frame of the white screen, the red screen, the green screen or the blue screen is lower than the normal brightness due to the influence of the hysteresis of the thin film transistor in the driving circuit, so that the smear phenomenon occurs on the white screen, the red screen, the green screen or the blue screen.

Disclosure of Invention

The invention provides a method and a device for determining the brightness ratio of a display frame of a display panel and a storage medium, so as to improve the calculation efficiency and accuracy of the brightness ratio of the display frame and further solve the smear phenomenon in the display panel.

According to an aspect of the present invention, there is provided a luminance duty ratio determining method of a display frame of a display panel, including:

acquiring brightness waveform data of n display frames of a display panel, wherein n is more than or equal to 2, n is a positive integer, the brightness waveform data comprises a plurality of brightness values of a plurality of brightness measuring points, and one brightness measuring point corresponds to one brightness value;

calculating the brightness difference duty ratio of each brightness measuring point; the brightness difference ratio of the brightness measuring point to be calculated is the ratio of the difference between the brightness value corresponding to the brightness measuring point to be calculated and the brightness value corresponding to the brightness reference measuring point to the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; the brightness reference measuring points are the brightness measuring points which are preset in number with the brightness measuring points to be calculated in the brightness waveform data;

and determining the average brightness value of each display frame according to the brightness difference duty ratio of the brightness measuring points, and determining at least the brightness duty ratio of the first frame in the n display frames according to the average brightness value of the n display frames.

Optionally, the determining the average brightness value of each display frame according to the brightness difference duty ratio of the brightness measuring points includes:

determining a starting brightness value and an ending brightness value of each display frame according to the brightness difference duty ratio of the brightness measuring points;

and determining the average brightness value of each display frame according to the starting brightness value and the ending brightness value of each display frame and the brightness waveform data.

Optionally, the determining the starting luminance value and the ending luminance value of each display frame according to the luminance difference duty ratio of the luminance measuring points includes:

in the brightness difference duty ratios of the brightness measuring points, searching n brightness difference duty ratios with interval time being one frame time and the value being negative number as n starting brightness difference duty ratios corresponding to n display frames;

determining that the brightness values of the brightness measuring points corresponding to the n start brightness difference duty ratios are n start brightness values corresponding to n display frames, and determining the start brightness value of one display frame in two adjacent display frames as the end brightness value of the other display frame;

preferably, in the luminance waveform data, the luminance value separated from the start luminance value of the end frame of the n display frames by one frame display time is taken as the end luminance value of the end frame.

Optionally, the determining the starting luminance value and the ending luminance value of each display frame according to the luminance difference duty ratio of the plurality of luminance measurement points includes:

searching whether the brightness difference duty ratios of a plurality of brightness measuring points exist or not, wherein n interval time is a frame time, the value of the brightness difference duty ratio is smaller than the mth reference value, and m is a positive integer;

if the brightness difference exists, determining starting brightness values corresponding to n display frames according to brightness values of brightness measuring points corresponding to n brightness difference duty ratios, and determining the starting brightness value of one display frame in two adjacent display frames as the ending brightness value of the other display frame;

if not, searching whether the brightness difference duty ratios of the brightness measuring points exist or not, wherein n interval time is a frame time and the value of the brightness difference duty ratio is smaller than the m+1th reference value; wherein A is _m+1 ＝A _m +dA，A _m+1 For the (m+1) th reference value, A _m For the mth reference value, dA is a preset amplitude adjustment value, A ₁ Is a preset reference value.

Optionally, the determining the starting luminance values corresponding to the n display frames according to the luminance values of the luminance measurement points corresponding to the n luminance difference duty ratios includes:

judging whether each brightness difference duty ratio is the minimum brightness difference duty ratio in the corresponding first searching interval or not in the n brightness difference duty ratios; wherein one of the brightness difference duty ratios corresponds to one first search interval; the first searching interval is composed of the corresponding brightness difference duty ratio and a first preset number of brightness difference duty ratios positioned around the corresponding brightness difference duty ratio;

If yes, determining the brightness value of the brightness measuring point corresponding to the brightness difference duty ratio as the starting brightness value corresponding to the display frame;

if not, determining a starting brightness value corresponding to the display frame according to the brightness value of the brightness measuring point corresponding to the minimum brightness difference duty ratio in the first searching section corresponding to the brightness difference duty ratio.

Optionally, the determining, according to the luminance value of the luminance measurement point corresponding to the minimum luminance difference duty ratio in the first search interval corresponding to the luminance difference duty ratio, the starting luminance value corresponding to the display frame includes:

judging whether the brightness value of the brightness measuring point corresponding to the minimum brightness difference duty ratio is the minimum brightness value in the corresponding second searching interval; wherein one of the brightness values corresponds to one second search interval; the second searching interval is composed of the corresponding brightness values and a second preset number of brightness values positioned around the corresponding brightness values;

if yes, determining the brightness value of the brightness measuring point corresponding to the minimum brightness difference ratio as the starting brightness value corresponding to the display frame;

if not, determining that the minimum brightness value in the second searching interval corresponding to the minimum brightness difference ratio is the starting brightness value corresponding to the display frame.

Optionally, after the step of determining that the luminance values of the n starting luminance differences occupying the corresponding luminance measurement points are n starting luminance values corresponding to the n display frames, the step further includes:

in the brightness waveform data, taking the brightness value which is separated from the ending brightness value of the first frame in n display frames by one frame time as a tentative starting brightness value g of the first frame, selecting two brightness values before the tentative starting brightness value g as a first floating brightness value g-1 and a second floating brightness value g-2 in sequence, and selecting two brightness values after the tentative starting brightness value g as a third floating brightness value g+1 and a fourth floating brightness value g+2 in sequence;

if the first floating luminance value g-1 and the third floating luminance value g+1 are both greater than the second floating luminance value g-2, the tentative starting luminance value g and the fourth floating luminance value g+2, covering the starting luminance value of the first frame with the smallest one of the first floating luminance value g-1 and the third floating luminance value g+1;

if the first floating luminance value g-1 and the third floating luminance value g+1 are smaller than the second floating luminance value g-2, the tentative starting luminance value g and the fourth floating luminance value g+2, covering the starting luminance value of the first frame with the smallest one of the tentative starting luminance value g and the fourth floating luminance value g+2;

If the second floating luminance value g-2, the first floating luminance value g-1, the tentative starting luminance value g, the third floating luminance value g+1 and the fourth floating luminance value g+2 are sequentially increased, covering the starting luminance value of the first frame with the second floating luminance value g-2;

and if the second floating luminance value g-2, the first floating luminance value g-1, the tentative starting luminance value g, the third floating luminance value g+1 and the fourth floating luminance value g+2 are sequentially reduced, covering the starting luminance value of the first frame with the fourth floating luminance value g+2.

Optionally, the determining, according to the average brightness value of the n display frames, the brightness ratio of the first frame in the n display frames at least includes:

and determining the brightness duty ratio of the first frame according to the ratio of the brightness average value of the first frame to the maximum value in the brightness average values of the rest display frames except the first frame.

According to another aspect of the present invention, there is provided a luminance duty ratio determining apparatus of a limit panel display frame, comprising:

the brightness waveform data acquisition module is used for acquiring brightness waveform data of n display frames of the display panel, wherein n is more than or equal to 2, n is a positive integer, the brightness waveform data comprises a plurality of brightness values of a plurality of brightness measuring points, and one brightness measuring point corresponds to one brightness value;

The brightness difference duty ratio acquisition module is used for calculating the brightness difference duty ratio of each brightness measuring point; the brightness difference ratio of the brightness measuring point to be calculated is the ratio of the difference between the brightness value corresponding to the brightness measuring point to be calculated and the brightness value corresponding to the brightness reference measuring point to the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; the brightness reference measuring points are the brightness measuring points which are preset in number with the brightness measuring points to be calculated in the brightness waveform data;

and the brightness duty ratio determining module is used for determining the brightness average value of each display frame according to the brightness difference duty ratio of the brightness measuring points and determining the brightness duty ratio of the first frame in the n display frames at least according to the brightness average value of the n display frames.

According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the method for determining luminance duty ratio of display frames of a display panel according to any one of the embodiments of the present invention when executed.

According to the technical scheme, the brightness waveform data of n display frames of the display panel are obtained, the brightness waveform data comprise a plurality of brightness values of a plurality of brightness measuring points, one brightness measuring point corresponds to one brightness value, n is more than or equal to 2, and n is a positive integer; then calculating the brightness difference duty ratio of each brightness measuring point; and finally, determining the brightness average value of each display frame according to the brightness difference duty ratio of the plurality of brightness measuring points, and determining at least the brightness duty ratio of the first frame in the n display frames according to the brightness average value of the n display frames, thereby realizing the calculation of the brightness duty ratio of the display frames. In addition, the method for determining the brightness ratio of the display frame of the display panel can be executed by a device for determining the brightness ratio of the display frame of the display panel, and the device can be realized in a hardware and/or software mode.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of a method for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a luminance waveform of a display frame according to an embodiment of the present invention;

FIG. 3 is a flowchart of another method for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention;

FIG. 4 is a flowchart of another method for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a waveform of a luminance difference duty ratio formed by the luminance difference duty ratios of the luminance measurement points in FIG. 2;

FIG. 6 is a flowchart of another method for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention;

FIG. 7 is a flowchart of a method for determining starting luminance values corresponding to a plurality of display frames according to an embodiment of the present invention;

FIG. 8 is a flowchart of another method for determining starting luminance values corresponding to a plurality of display frames according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a device for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The inventor finds that in the related technology, an attempt is made to introduce a smear compensation function into an OLED display panel to improve a smear phenomenon, so that the user visual experience is improved. In the development and debugging stage of the smear compensation function, the compensation force is generally determined by adopting a mode of calculating the brightness ratio of the first frame, so that the calculation of the brightness ratio of the first frame needs to be repeated for many times in the whole development and debugging stage. The data processing amount for calculating the brightness ratio of the first frame is large, and when the data displayed on the software interface is manually pulled for calculation, the efficiency is low and errors are easy to occur.

In view of the foregoing, the present application provides a method for determining a luminance ratio of a display frame of a display panel, a device for determining a luminance ratio of a display frame of a display panel, and a computer-readable storage medium, as described in detail below.

The method for determining the brightness ratio of the display frame of the display panel provided by the embodiment of the invention can be executed by the device for determining the brightness ratio of the display frame of the display panel, and the device for determining the brightness ratio of the display frame of the display panel can be configured in an optical jig capable of measuring brightness waveform data.

Fig. 1 is a flowchart of a method for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention, as shown in fig. 1, the method includes:

S110, acquiring brightness waveform data of n display frames of the display panel, wherein n is more than or equal to 2, n is a positive integer, the brightness waveform data comprises a plurality of brightness values of a plurality of brightness measuring points, and one brightness measuring point corresponds to one brightness value.

Specifically, the display panel is, for example, an OLED display panel. One display frame of the display panel corresponds to one display picture of the display panel. The brightness waveform of the display frame represents the corresponding relation between the brightness and time of the display frame, and the brightness waveform of the display frame can be obtained through an optical jig capable of collecting the brightness. The optical jig includes, but is not limited to, a photodetector, etc., and the optical jig may sample the brightness of the display frame at a set sampling rate within a preset time.

In the embodiment of the invention, the brightness measuring point of the display frame is the time point when the optical jig samples the brightness of the display frame, and the optical jig can obtain the brightness value of one brightness measuring point of the display frame after sampling the brightness of the display frame once. The brightness waveform data of the display frame can be obtained by drawing the brightness waveform data. That is, the luminance waveform of the display frame can be obtained from the luminance waveform data of the display frame, whereas the luminance waveform data of the display frame can be obtained from the luminance waveform of the display frame; for the optical jig, the optical jig may generate the luminance waveform of the display frame from the luminance waveform data of the display frame, or may derive the luminance waveform data of the display frame from the luminance waveform of the display frame.

In the development and debugging stage of the display panel smear compensation function, the brightness ratio of the display frames in the display frames with smear phenomenon is calculated, and the display frames with smear phenomenon generally comprise a plurality of continuous display frames, so in the embodiment of the invention, the brightness waveform data of n display frames of the display panel are obtained, specifically, the brightness waveform data of n continuous display frames of the display panel are obtained, and further, the brightness waveforms of n continuous display frames can be obtained. Fig. 2 is a schematic diagram of luminance waveforms of display frames according to an embodiment of the present invention, in which luminance waveforms of 6 consecutive display frames are illustrated in fig. 2, and the 6 display frames are respectively a 1 st frame, a 2 nd frame, a 3 rd frame, a 4 th frame, a 5 th frame, and a 6 th frame, wherein a horizontal axis in a two-dimensional coordinate system represents time t, and a vertical axis represents a luminance value nit.

S120, calculating the brightness difference duty ratio of each brightness measuring point; the brightness difference ratio of the brightness measuring point to be calculated is the ratio of the difference between the brightness value corresponding to the brightness measuring point to be calculated and the brightness value corresponding to the brightness reference measuring point to the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; the brightness reference measuring points are brightness measuring points which are preset in a preset number of brightness measuring points in the brightness waveform data and are spaced from the brightness measuring points to be calculated.

Specifically, the brightness measurement point, the brightness value and the brightness difference ratio are in one-to-one correspondence with each other. The brightness measuring point to be calculated is the brightness measuring point whose brightness difference ratio is currently being calculated. The preset number of luminance points to be calculated between the luminance point and the luminance reference point is generally much smaller than the number of luminance points of the display frame. For example, the number of luminance measurement points of one display frame may be several tens to several hundreds, and the preset number may be less than ten or so.

The preset number capable of meeting the actual condition needs can be set by combining the sampling rate of the optical jig and the refresh frequency of the display panel. In the case where the sampling rate of the optical jig has been set: the higher the refresh frequency of the display panel is, the fewer the number of brightness measuring points of the display frame is, so that the smaller the preset number can be set; the lower the refresh frequency of the display panel is, the more the number of brightness measuring points of the display frame is, so that the preset number can be set to be larger. Similarly, when the refresh frequency of the display panel is predetermined: the higher the sampling rate of the optical jig is set, the more the number of brightness measuring points of the display frame is, so that the preset number can be set to be larger; the lower the sampling rate of the optical jig is set, the fewer the number of luminance measurement points of the display frame is, so that the preset number can be set to be smaller.

The brightness difference duty ratio of the brightness measuring point to be calculated can be represented by P, the brightness value corresponding to the brightness measuring point to be calculated can be represented by L1, the brightness value corresponding to the brightness reference measuring point can be represented by L2, the maximum brightness value in the brightness waveform data of n display frames can be represented by Lmax, and the minimum brightness value in the brightness waveform data of n display frames can be represented by Lmin, then

With continued reference to fig. 2, the luminance waveforms of the display frame include waveforms in which the luminance is in an upward trend and waveforms in which the luminance is in a downward trend. In the embodiment of the invention, L1 and L2 are subjected to difference, so that the brightness variation difference between the brightness measuring point to be calculated and the preset number of brightness measuring points at intervals is obtained; performing difference on Lmax and Lmin to obtain the brightness span in the brightness waveform data; and then, taking the ratio of L1-L2 to Lmax-Lmin as the brightness difference duty ratio of the brightness measuring point to be calculated. Based on the above, when P is smaller than 0, the brightness change from the brightness measuring point to be calculated to the brightness reference measuring point is illustrated to be increased, and further, the section of the brightness waveform from the brightness measuring point to be calculated to the brightness reference measuring point is illustrated to be the waveform with the brightness in the ascending trend; when P is more than 0, the brightness change from the brightness measuring point to the brightness reference measuring point to be calculated is reduced, and the section of the brightness waveform from the brightness measuring point to be calculated to the brightness reference measuring point is a waveform with the brightness in a descending trend; when p=0, it can be considered that there is substantially no change in luminance from the luminance measurement point to be calculated to the luminance reference measurement point.

S130, determining the average brightness value of each display frame according to the brightness difference duty ratio of the brightness measuring points, and determining the brightness duty ratio of the first frame in the n display frames at least according to the average brightness value of the n display frames.

Specifically, based on the foregoing step 120, when determining that a section of the waveform from the luminance measurement point to be calculated to the luminance reference measurement point is a waveform with an ascending luminance trend or a waveform with a descending luminance trend according to the luminance difference ratio of the luminance measurement point, the luminance waveform of each display frame in the luminance waveforms of n display frames may be further determined, so that the luminance waveform data of each display frame in the luminance waveform data of n display frames may be determined. The average value of all brightness values in the brightness waveform data of the display frames is the brightness average value of the display frames, the brightness average value of each display frame is obtained, and the brightness duty ratio of each display frame can be obtained according to the brightness average value of each display frame.

The luminance ratio of one of the n display frames may be a ratio of the average luminance value of the display frame to the maximum value of the average luminance values of the remaining n-1 display frames. The first frame of the n display frames is a display frame that is displayed first in the process of displaying the n display frames on the display panel, namely, the 1 st display frame (such as the 1 st frame in fig. 2); the last display frame in the n display frames is the nth display frame (e.g., the 6 th frame in fig. 2) in the process of displaying the n display frames on the display panel.

Illustratively, the luminance ratio of the first frame of the n display frames may be a ratio of the average value of the luminance of the first frame to the maximum value of the average values of the luminance of the 2 nd to n th display frames; the luminance ratio of the 2 nd display frame among the n display frames may be a ratio of the average luminance value of the 2 nd display frame to the maximum value among the average luminance values of the first frame and the 3 rd to n display frames.

In summary, the technical scheme of the embodiment of the invention can realize the calculation of the brightness ratio of the display frame of the display panel. In the related art, after the brightness waveform data of n display frames of the display panel are obtained, the brightness duty ratio of the display frames is calculated by manually selecting, importing and operating the brightness waveform data displayed on a software interface in a row, column or table mode, and the like, so that the efficiency is low, errors are easy to occur, and particularly, the calculation of the brightness duty ratio of the display frames is required to be repeated for a plurality of times. In the embodiment of the invention, the method for determining the brightness ratio of the display frame of the display panel can be executed by a device for determining the brightness ratio of the display frame of the display panel, and the device can be realized in a hardware and/or software mode without manually selecting, importing and operating brightness waveform data displayed in a form of a table or the like or in a form of a row or the like. The device directly and automatically calculates the brightness duty ratio of the display frames after acquiring the brightness waveform data of n display frames of the display panel, realizes the automation of the calculation of the brightness duty ratio of the display frames, and releases the manual calculation of the brightness duty ratio of the display frames by people, thereby improving the calculation efficiency and the accuracy of the brightness duty ratio of the display frames, further solving the smear phenomenon in the display panel, reducing the man-made processing time and saving the labor cost.

On the basis of the above embodiment, fig. 3 is a flowchart of another method for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention, as shown in fig. 3, where the method includes:

s210, acquiring brightness waveform data of n display frames of the display panel, wherein n is more than or equal to 2, n is a positive integer, the brightness waveform data comprises a plurality of brightness values of a plurality of brightness measuring points, and one brightness measuring point corresponds to one brightness value.

S220, calculating the brightness difference duty ratio of each brightness measuring point; the brightness difference ratio of the brightness measuring point to be calculated is the ratio of the difference between the brightness value corresponding to the brightness measuring point to be calculated and the brightness value corresponding to the brightness reference measuring point to the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; the brightness reference measuring points are brightness measuring points which are preset in a preset number of brightness measuring points in the brightness waveform data and are spaced from the brightness measuring points to be calculated.

S230, determining a starting brightness value and an ending brightness value of each display frame according to the brightness difference duty ratio of the brightness measuring points.

Specifically, the starting luminance value of the display frame is the luminance value at the time when the display frame starts to display in the display frame luminance waveform; the end luminance value of the display frame is the luminance value at the end display time of the display frame in the display frame luminance waveform. The display frame starts to display, the brightness of the display frame is in an ascending trend, and the brightness waveform of the display frame is in an ascending trend; and ending the display stage of the display frame, wherein the brightness of the display frame is in a descending trend, and the brightness waveform of the display frame is in a descending trend.

Based on the foregoing step 220 (or step 120), when determining that a waveform from the luminance measurement point to be calculated to the luminance reference point is a waveform with an ascending luminance or a waveform with a descending luminance according to the luminance difference ratio of the luminance measurement point, a waveform of a display start stage and a waveform of a display end stage of each display frame can be further determined, so as to determine a luminance value of the display start time of each display frame and a luminance value of the display end time of each display frame.

S240, determining the average brightness value of each display frame according to the starting brightness value and the ending brightness value of each display frame and the brightness waveform data.

Specifically, a start luminance value, an end luminance value, and respective luminance values between the start luminance value and the end luminance value of a display frame constitute all luminance values of one display frame. The average value of all the brightness values of the display frame is the average value of the brightness of the display frame.

S250, determining the brightness ratio of the first frame in the n display frames at least according to the brightness average value of the n display frames.

According to the technical scheme, the brightness average value of each display frame is further obtained by determining the starting brightness value and the ending brightness value of each display frame, so that the brightness ratio of the display frame is determined, the method is high in practicability, the calculation efficiency and accuracy of the brightness ratio of the display frame are improved, the smear phenomenon in the display panel is further solved, the human processing time is reduced, and the labor cost is saved.

In the above technical solution, the specific method for determining the starting luminance value and the ending luminance value of each display frame according to the luminance difference ratio of the plurality of luminance measurement points includes a plurality of methods, and several of them are described below by way of example, but not by way of limitation of the present invention.

In one embodiment of the present invention, referring to fig. 4, fig. 4 is a flowchart of another method for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention, where the method includes:

s310, acquiring brightness waveform data of n display frames of the display panel, wherein n is more than or equal to 2, n is a positive integer, the brightness waveform data comprises a plurality of brightness values of a plurality of brightness measuring points, and one brightness measuring point corresponds to one brightness value.

S320, calculating the brightness difference duty ratio of each brightness measuring point; the brightness difference ratio of the brightness measuring point to be calculated is the ratio of the difference between the brightness value corresponding to the brightness measuring point to be calculated and the brightness value corresponding to the brightness reference measuring point to the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; the brightness reference measuring points are brightness measuring points which are preset in a preset number of brightness measuring points in the brightness waveform data and are spaced from the brightness measuring points to be calculated.

S330, in the brightness difference duty ratios of the brightness measuring points, the brightness difference duty ratios with the interval time of n being one frame time and the value being negative are found out and used as n starting brightness difference duty ratios corresponding to n display frames.

Specifically, fig. 5 is a schematic diagram of a luminance difference duty waveform formed by luminance difference duty ratios of the luminance measurement points in fig. 2, where the luminance difference duty ratio waveform represents a correspondence relationship between the luminance measurement points and the luminance difference duty ratio, and a horizontal axis in a two-dimensional coordinate system represents time t and a vertical axis represents luminance difference duty ratio P. Referring to fig. 5 and fig. 2, in the display stage of the display frame, since the brightness of the display frame is in an ascending trend, the value of the brightness difference ratio of the brightness measurement points is a negative number in a very large probability, especially, in the display stage of the display frame, the value of the brightness difference ratio of the brightness measurement points is necessarily a negative number, that is, P < 0; further, among the luminance difference duty ratios of the plurality of luminance measurement points corresponding to the n display frames, there are necessarily luminance difference duty ratios in which the n interval times are one frame time and the value is a negative number. Taking the n interval time as a frame time and the brightness difference duty ratio of which the value is negative as n starting brightness difference duty ratios corresponding to n display frames, wherein one display frame corresponds to one starting brightness difference duty ratio; the start luminance difference duty ratio is the luminance difference duty ratio at the time of starting display of the display frame.

S340, determining that the brightness values of the brightness measuring points corresponding to the n start brightness difference duty ratios are n start brightness values corresponding to the n display frames, and determining the start brightness value of one display frame in the adjacent two display frames as the end brightness value of the other display frame.

Specifically, the start luminance value of the display frame is the luminance value at the display frame start display time in the display frame luminance waveform, and the start luminance difference duty ratio of the display frame is the luminance difference duty ratio at the display frame start display time in the display frame luminance difference duty ratio waveform. Therefore, the luminance value of the luminance measurement point corresponding to the display frame start luminance difference ratio can be determined as the start luminance value of the display frame.

After determining the starting luminance value of each display frame, the starting luminance value of one of the two adjacent display frames may be determined as the ending luminance value of the other display frame, i.e., the starting luminance value of one of the two adjacent display frames is taken as the demarcation luminance value of the two adjacent display frames.

Further, optionally, the method for determining the ending luminance value of the end frame in the n display frames may include: in the luminance waveform, a luminance value at a display time of one frame from a start luminance value of a tail frame out of n display frames is taken as an end luminance value of the tail frame.

S350, determining the average brightness value of each display frame according to the starting brightness value and the ending brightness value of each display frame and the brightness waveform data.

S360, determining the brightness ratio of the first frame in the n display frames at least according to the brightness average value of the n display frames.

In summary, according to the technical scheme of the embodiment of the invention, according to the value rule of the brightness difference ratio of the brightness measuring points at the beginning display stage of the display frames and according to the display time of the display frames and the number of the display frames, the beginning brightness value and the ending brightness value of each display frame in the n display frames are obtained, and the method is simple and effective, and is beneficial to the rapid and effective calculation of the brightness ratio of the display frames.

The above embodiment may be further optimized, that is, in another embodiment of the present invention, referring to fig. 6, fig. 6 is a flowchart of another method for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention, where the method includes:

s410, acquiring brightness waveform data of n display frames of the display panel, wherein n is more than or equal to 2, n is a positive integer, the brightness waveform data comprises a plurality of brightness values of a plurality of brightness measuring points, and one brightness measuring point corresponds to one brightness value.

S420, calculating the brightness difference duty ratio of each brightness measuring point; the brightness difference ratio of the brightness measuring point to be calculated is the ratio of the difference between the brightness value corresponding to the brightness measuring point to be calculated and the brightness value corresponding to the brightness reference measuring point to the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; the brightness reference measuring points are brightness measuring points which are preset in a preset number of brightness measuring points in the brightness waveform data and are spaced from the brightness measuring points to be calculated.

S430, selecting the mth reference value A _m ，A ₁ Is a preset reference value.

Specifically, in the display frame start display stage, the rise of luminance may deviate from the monotonically increasing rise to cause fluctuation, so that the luminance difference duty ratio of a negative number may be plural. In order to ensure the determined initial brightness difference duty ratio and to infinitely approximate the actual brightness difference duty ratio at the moment of starting display of the display frame, thereby ensuring the accuracy of the brightness average value of the display frame, the embodiment of the invention sets a reference value, and a range for selecting the initial brightness difference duty ratio is defined by the reference value. That is, there is a possibility that the luminance difference duty ratio is selected as the start luminance difference duty ratio only when the value is negative and smaller than the reference value; further, the n interval times are the luminance difference duty ratios, which are negative numbers of one frame time and smaller than the reference value, have the possibility of being selected as the n start luminance difference duty ratios.

On this basis, considering that the luminance waveforms of n display frames are measured in different states of the display panel, or in different states of the optical jig, respectively, a fixed reference value is not suitable for the luminance waveforms of n display frames measured at a time. Accordingly, it is The embodiment of the invention sets a plurality of reference values A ₁ 、A ₂ 、A ₃ …A _m 、A _m+1 … so that each measured luminance waveform of n display frames can have a corresponding suitable reference value. For example, for the luminance waveform of the n display frames measured 1 st time, it may be based on the 1 st reference value A ₁ ，A ₁ Searching a start brightness difference duty ratio which is infinitely close to the display starting moment of the display frame and is really an actual brightness difference duty ratio for a preset reference value (namely a preset reference value); and for the luminance waveform of the n display frames measured 3 rd time, it can be based on the 4 th reference value A ₄ The start luminance difference duty ratio, which is infinitely close to the display frame start display time and is the actual luminance difference duty ratio, is found.

S440, searching whether the brightness difference duty ratio of the brightness measuring points exists or not, wherein n interval time is a frame time and the value is smaller than the mth reference value A _m And m is a positive integer.

If yes, go to step S450; if not, then take A _m ＝A _m +dA performs step S440.

Wherein, in A _m ＝A _m The meaning of +dA performing step S440 is: searching whether the brightness difference duty ratio of a plurality of brightness measuring points exists or not, wherein n interval time is a frame time and the value is smaller than the (m+1) th reference value A _m+1 The luminance difference ratio of (2); wherein A is _m+1 ＝A _m +dA, dA is a preset amplitude adjustment value. Illustratively, a reference value A is preset ₁ The preset amplitude adjustment value dA may be a negative number.

Specifically, the 1 st reference value A is preset ₁ After the amplitude adjustment value dA is preset, searching in the brightness difference duty ratios of the brightness measuring points, and judging whether n interval time is a frame time and the value is smaller than the 1 st reference value A ₁ The luminance difference ratio of (2); if yes, go to step S450;

if not, the reference value is adjusted, namely, the 1 st reference value A ₁ The superimposed preset amplitude adjustment value dA is used as the 2 nd reference value A ₂ To continue measuring at a plurality of brightnessSearching in the brightness difference duty ratio of the point, and judging whether n interval time is a frame time and the value is smaller than the 2 nd reference value A ₂ The luminance difference ratio of (2); if yes, go to step S450;

if not, continuing to adjust the reference value, namely the 2 nd reference value A ₂ The superimposed preset amplitude adjustment value dA is used as the 3 rd reference value A ₃ The method is to continuously search in the brightness difference duty ratio of a plurality of brightness measuring points, whether n interval time is a frame time and the value is smaller than the 3 rd reference value A ₃ The luminance difference ratio of (2); if yes, go to step S450;

if not, continuing to adjust the reference value to A ₄ Continuously searching in the brightness difference duty ratio of the brightness measuring points, and judging whether n interval time is a frame time and the value is smaller than the 4 th reference value A ₄ And the like until n interval times are found to be one frame time under the corresponding proper reference value and the value is smaller than the brightness difference duty ratio of the corresponding proper reference value.

S450, determining a start brightness value corresponding to n display frames according to the brightness values of the brightness measuring points corresponding to the n brightness difference duty ratios, and determining the start brightness value of one display frame in two adjacent display frames as the end brightness value of the other display frame.

Optionally, the method for determining the ending luminance value of the tail frame in the n display frames may include: in the luminance waveform data, a luminance value at a display time of one frame from a start luminance value of a tail frame out of n display frames is taken as an end luminance value of the tail frame.

S460, determining the average brightness value of each display frame according to the starting brightness value and the ending brightness value of each display frame and the brightness waveform data.

S470, determining the brightness ratio of the first frame in the n display frames at least according to the brightness average value of the n display frames.

In summary, according to the technical scheme of the embodiment of the invention, the preset is set on the premise of taking the value rule of the brightness difference ratio of the brightness measuring point at the beginning display stage of the display frame and according to the display time of the display frame and the number of the display frames Reference value A ₁ And a preset amplitude adjustment value dA, based on a preset reference value A ₁ And the preset amplitude adjustment value dA can obtain a plurality of reference values, the starting brightness value and the ending brightness value of each display frame in the n display frames are determined based on the plurality of reference values, the method can be suitable for the brightness waveforms of the n display frames measured under different conditions, the compatibility of the method is higher, and the accuracy of the brightness average value of the obtained display frames is higher.

Based on the above embodiment, in order to further ensure the determined start luminance difference duty ratio, the actual luminance difference duty ratio is infinitely close to the display frame start display time, so as to ensure the accuracy of the display frame luminance average value, and further improve the accuracy of the display frame luminance duty ratio, referring to fig. 7, fig. 7 is a flowchart of a method for determining start luminance values corresponding to a plurality of display frames according to the embodiment of the present invention, optionally, in step S450, determining the start luminance values corresponding to n display frames according to the luminance values of the luminance measurement points corresponding to n luminance difference duty ratios may further include:

s4501, judging whether each brightness difference duty ratio is the minimum brightness difference duty ratio in the corresponding first searching interval in the n brightness difference duty ratios; wherein, a brightness difference duty ratio corresponds to a first searching interval; the first search interval is composed of a corresponding brightness difference duty ratio and a first preset number of brightness difference duty ratios positioned around the corresponding brightness difference duty ratio.

If yes, go to step 4502; if not, go to step 4503.

Specifically, the first preset number is generally far smaller than the number of brightness measuring points of the display frame, and can be set to meet the actual situation requirement by combining the sampling rate of the optical jig and the refresh frequency of the display panel; for example, the greater the number of luminance measurement points of the display frame, the greater the first preset number may be, and the lesser the number of luminance measurement points of the display frame, the lesser the first preset number may be.

Based on the foregoing step S440, after the n luminance difference duty ratios, the interval time of which is one frame time and the value of which is smaller than the corresponding suitable reference value, are found, the first search interval in which each of the n luminance difference duty ratios is located is determined based on the first preset number, and then it is determined whether each of the n luminance difference duty ratios is the minimum luminance difference duty ratio in the corresponding first search interval. In addition, the first preset number in the first search interval corresponding to the brightness difference duty ratio may be the same or different, and may be set according to actual situation needs.

S4502, determining the brightness value of the brightness measuring point corresponding to the brightness difference duty ratio as the starting brightness value corresponding to the display frame.

Specifically, when the brightness difference duty ratio is judged to be the minimum brightness difference duty ratio in the corresponding first searching interval, the brightness value of the brightness measuring point corresponding to the brightness difference duty ratio is determined to be the starting brightness value of the display frame, so that the brightness difference duty ratio used for determining the starting brightness value of the display frame is ensured to be the minimum brightness difference duty ratio in the corresponding first searching interval, and the brightness difference duty ratio used for determining the starting brightness value of the display frame is prevented from being the brightness difference duty ratio at the position of a small fluctuation peak when the brightness is in a display frame starting display stage in the brightness rising process.

S4503, determining a starting brightness value corresponding to the display frame according to the brightness value of the brightness measuring point corresponding to the minimum brightness difference duty ratio in the first searching section corresponding to the brightness difference duty ratio.

Specifically, when the brightness difference duty ratio is judged to be not the minimum brightness difference duty ratio in the corresponding first searching interval, the brightness value of the brightness measuring point corresponding to the minimum brightness difference duty ratio in the first searching interval corresponding to the brightness difference duty ratio is determined to be the starting brightness value of the display frame, so that the determined starting brightness value is ensured to be infinitely close to the real brightness value at the moment of starting display of the display frame.

Based on the above technical solution, in order to further ensure that the determined starting luminance value ratio is infinitely close to the actual luminance value at the time of starting displaying the display frame, thereby ensuring the accuracy of the luminance average value of the display frame and further improving the accuracy of the luminance ratio of the display frame, referring to fig. 8, fig. 8 is a flowchart of another method for determining starting luminance values corresponding to a plurality of display frames according to the embodiment of the present invention, optionally, in step S4503, determining the starting luminance value corresponding to the display frame according to the luminance value of the luminance measuring point corresponding to the minimum luminance difference ratio in the first search interval corresponding to the luminance difference ratio may further include:

s45031, judging whether the brightness value of the brightness measuring point corresponding to the minimum brightness difference duty ratio is the minimum brightness value in the corresponding second searching interval; wherein, one brightness value corresponds to one second searching interval; the second search interval is composed of corresponding brightness values and a second preset number of brightness values positioned around the corresponding brightness values.

If yes, go to step S45032; if not, step S45033 is performed.

Specifically, the second preset number is generally far smaller than the number of brightness measuring points of the display frame, and can be set to meet the actual situation requirement by combining the sampling rate of the optical jig and the refresh frequency of the display panel; illustratively, the greater the number of luminance measurement points of the display frame, the greater the second preset number may be, and the lesser the number of luminance measurement points of the display frame, the lesser the second preset number may be.

Based on the foregoing steps S4502 and S4503, after obtaining n minimum luminance difference duty ratios for determining the starting luminance values of the display frames, determining, based on the second preset number, a second search interval in which the luminance values of the luminance measurement points corresponding to the respective minimum luminance difference duty ratios are located, and then determining whether the luminance value corresponding to the respective minimum luminance difference duty ratios is the minimum luminance value in the corresponding second search interval.

S45032, determining the brightness value of the brightness measuring point corresponding to the minimum brightness difference ratio as the starting brightness value corresponding to the display frame.

Specifically, when the luminance value corresponding to the minimum luminance difference duty ratio is determined to be the minimum luminance value in the second search interval where the luminance value is located, the luminance value is determined to be the start luminance value of the display frame, so that the luminance value used for determining the start luminance value of the display frame is ensured to be the minimum luminance value in the corresponding second search interval, the stage that the luminance value used for determining the start luminance value of the display frame is the start display of the display frame is avoided, and when the luminance fluctuates less during the luminance rising process, the luminance at the fluctuation peak is smaller.

S45033, determining the minimum brightness value in the second searching interval corresponding to the minimum brightness difference ratio as the starting brightness value corresponding to the display frame.

Specifically, when the luminance value corresponding to the minimum luminance difference duty ratio is not the minimum luminance value in the second search interval where the luminance value is located, the minimum luminance value in the second search interval is determined as the starting luminance value corresponding to the display frame, so that the determined starting luminance value is ensured to be infinitely close to the actual luminance value at the starting display time of the display frame.

Based on any of the above embodiments, when the display screen of the display panel is switched from the low gray level to the high gray level, the luminance of the first frame of the display screen of the high gray level is usually significantly lower than the normal luminance, but the luminance of the display frames (e.g., the 2 nd frame, the 3 rd frame …) after the first frame is substantially close to the normal luminance. Therefore, in the development and debugging stage of the smear compensation function, the compensation force is generally determined by calculating the brightness ratio of the first frame. The luminance duty ratio of the first frame of the n display frames is a ratio of the average luminance value of the first frame to the maximum value of the average luminance values of the remaining n-1 display frames. Therefore, the accuracy of the brightness average value of the first frame influences the accuracy of the brightness ratio of the first frame; wherein the start luminance value and the end luminance value of the first frame affect the determination of all luminance values of the first frame, and all luminance values of the first frame affect the luminance average value of the first frame. Therefore, accurately determining the starting luminance value of the first frame is a key for accurately determining the average value of the luminance of the first frame, and further is a key for accurately determining the luminance duty ratio of the first frame.

In this regard, in the embodiment of the present invention, after step S230, step S340, step S450, step S4502, step S4503, step S45032, and/or step S45033, that is, before determining the average luminance value of each display frame according to the start luminance value and the end luminance value of each display frame and the luminance waveform data, the method further includes:

s231, in the brightness waveform data, a brightness value which is separated from an end brightness value of a first frame in n display frames by one frame time is taken as a temporary starting brightness value g of the first frame, two brightness values before the temporary starting brightness value g are sequentially taken as a first floating brightness value g-1 and a second floating brightness value g-2, and two brightness values after the temporary starting brightness value g are sequentially taken as a third floating brightness value g+1 and a fourth floating brightness value g+2.

S232, judging the magnitudes of the first floating luminance value g-1, the second floating luminance value g-2, the third floating luminance value g+1, the fourth floating luminance value g+2 and the tentative starting luminance value g, wherein the judging result comprises but is not limited to the following four:

1) If the first floating luminance value g-1 and the third floating luminance value g+1 are larger than the second floating luminance value g-2, the tentative starting luminance value g and the fourth floating luminance value g+2, the smallest one of the first floating luminance value g-1 and the third floating luminance value g+1 is used for covering the starting luminance value of the first frame.

Specifically, when the first floating luminance value g-1 and the third floating luminance value g+1 are both greater than the second floating luminance value g-2, the tentative start luminance value g, and the fourth floating luminance value g+2, it is explained that the waveforms in which the first floating luminance value g-1, the second floating luminance value g-2, the third floating luminance value g+1, the fourth floating luminance value g+2, and the tentative start luminance value g may be commonly located are letter "M" shapes. The letter "M" includes two end points, two top points (left top point and right top point) and one bottom point, the second floating luminance value g-2 and the fourth floating luminance value g+2 are respectively located on the two end points of the letter "M", the first floating luminance value g-1 and the third floating luminance value g+1 are respectively located on the two top points of the letter "M", and the tentative starting luminance value g is located at the bottom point of the letter "M".

When the first floating luminance value g-1 is greater than the third floating luminance value g+1, it is indicated that the height of the right vertex where the third floating luminance value g+1 is located is smaller than the height of the left vertex where the first floating luminance value g-1 is located, and further it is indicated that the luminance in the initial display stage of the first frame is actually gradually increased and increased from the third floating luminance value g+1, and at this time, the initial luminance value of the first frame is covered with the third floating luminance value g+1, that is, the third floating luminance value g+1 is determined as the final initial luminance value of the first frame. When the first floating luminance value g-1 is smaller than the third floating luminance value g+1, it can be explained that the luminance at the beginning of the display stage of the first frame is actually gradually rising and increasing from the first floating luminance value g-1, and the first floating luminance value g-1 is determined as the final beginning luminance value of the first frame.

2) If the first floating luminance value g-1 and the third floating luminance value g+1 are smaller than the second floating luminance value g-2, the tentative starting luminance value g and the fourth floating luminance value g+2, the smallest one of the tentative starting luminance value g and the fourth floating luminance value g+2 is used for covering the starting luminance value of the first frame.

Specifically, when the first and third floating luminance values g-1 and g+1 are each smaller than the second, tentative start luminance value g and fourth floating luminance value g+2, the waveforms in which the first, second, third, fourth and tentative start luminance values g-1, g+2 and g+2 may be commonly located are the letter "W" shape. The letter "W" includes two end points (left and right end points), one vertex and two bottom ends, the second floating luminance value g-2 and the fourth floating luminance value g+2 are respectively located on the two end points of the letter "W", the first floating luminance value g-1 and the third floating luminance value g+1 are respectively located on the two bottom ends of the letter "W", and the provisional start luminance value g is located on the vertex of the letter "W".

When the tentative start luminance value g is greater than the fourth floating luminance value g+2, it is explained that the luminance at the start display stage of the first frame is actually gradually rising and increasing from the fourth floating luminance value g+2, and at this time, the start luminance value of the first frame is covered with the fourth floating luminance value g+2, that is, the fourth floating luminance value g+2 is determined as the final start luminance value of the first frame. When the provisional start luminance value g is smaller than the fourth floating luminance value g+2, it is explained that the luminance at the first frame start display stage is actually gradually increased from the provisional start luminance value g, and the final first frame start luminance value is determined as the provisional start luminance value g.

3) If the second floating luminance value g-2, the first floating luminance value g-1, the tentative starting luminance value g, the third floating luminance value g+1 and the fourth floating luminance value g+2 are sequentially increased, the starting luminance value of the first frame is covered with the second floating luminance value g-2, and at this time, it is explained that the luminance at the beginning of the display stage of the first frame is actually gradually increased and increased from the second floating luminance value g-2.

4) If the second floating luminance value g-2, the first floating luminance value g-1, the tentative starting luminance value g, the third floating luminance value g+1 and the fourth floating luminance value g+2 decrease in sequence, the starting luminance value of the first frame is covered with the fourth floating luminance value g+2, and at this time, it is explained that the luminance at the beginning of the display stage of the first frame is actually gradually rising and increasing from the fourth floating luminance value g+2.

In summary, according to the technical scheme of the embodiment of the invention, a luminance value which is separated from an end luminance value of a first frame in n display frames by one frame time is taken as a tentative start luminance value g of the first frame, and a first floating luminance value g-1, a second floating luminance value g-2, a third floating luminance value g+1 and a fourth floating luminance value g+2 are sequentially selected in front of and behind the tentative start luminance value g; and then, the first floating brightness value g-1, the second floating brightness value g-2, the third floating brightness value g+1, the fourth floating brightness value g+2 and the tentative starting brightness value g are judged to obtain a starting point for gradually rising and increasing brightness (namely, a starting point for monotonically increasing brightness) in the initial display stage of the first frame, the starting point brightness value is determined to be a final initial brightness value of the first frame, the accuracy of the initial brightness value of the first frame is ensured, and the accuracy of the brightness ratio of the first frame is further ensured.

Fig. 9 is a schematic structural diagram of a device for determining a luminance ratio of a display frame of a display panel according to an embodiment of the present invention, where the device is configured to perform the method for determining a luminance ratio of a display frame of a display panel according to any of the above embodiments, and referring to fig. 9, the device includes:

the brightness waveform data acquisition module 10 is used for acquiring brightness waveform data of n display frames of the display panel, wherein n is more than or equal to 2, n is a positive integer, the brightness waveform data comprises a plurality of brightness values of a plurality of brightness measuring points, and one brightness measuring point corresponds to one brightness value;

the brightness difference duty ratio obtaining module 20 is configured to calculate a brightness difference duty ratio of each brightness measurement point; the brightness difference ratio of the brightness measuring point to be calculated is the ratio of the difference between the brightness value corresponding to the brightness measuring point to be calculated and the brightness value corresponding to the brightness reference measuring point to the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; the brightness reference measuring points are brightness measuring points which are preset number of brightness measuring points at intervals from the brightness measuring points to be calculated in the brightness waveform data;

the luminance ratio determining module 30 is configured to determine a luminance average value of each display frame according to the luminance difference ratios of the plurality of luminance measurement points, and determine at least a luminance ratio of a first frame of the n display frames according to the luminance average value of the n display frames.

The device and the method for determining the brightness ratio of the display frame of the display panel provided by the embodiment of the invention belong to the same inventive concept, can realize the same technical effect, and are not repeated here.

The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions, and the computer instructions are used for enabling the processor to implement the method for determining the brightness ratio of the display frame of the display panel in any embodiment when the processor executes the method.

A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet. The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A method for determining a luminance ratio of a display frame of a display panel, comprising:

2. The method according to claim 1, wherein determining the average luminance value of each display frame according to the luminance difference duty ratio of the plurality of luminance measurement points comprises:

3. The method according to claim 2, wherein determining the start luminance value and the end luminance value of each of the display frames according to the luminance difference duty ratios of the plurality of luminance measurement points comprises:

4. The method according to claim 2, wherein determining the start luminance value and the end luminance value of each of the display frames according to the luminance difference duty ratio of the plurality of luminance measurement points comprises:

5. The method for determining the luminance ratio of a display frame of a display panel according to claim 4, wherein determining the starting luminance values corresponding to the n display frames according to the luminance values of the luminance measurement points corresponding to the n luminance difference ratios comprises:

6. The method for determining the luminance ratio of the display frame of the display panel according to claim 5, wherein determining the starting luminance value corresponding to the display frame according to the luminance value of the luminance measurement point corresponding to the minimum luminance difference ratio in the first search interval corresponding to the luminance difference ratio comprises:

7. The method for determining the luminance ratio of a display frame of a display panel according to claim 3, wherein the step of determining that the luminance values of the luminance measurement points corresponding to the n start luminance differences are n start luminance values corresponding to the n display frames further comprises:

8. The method according to claim 1, wherein determining the luminance ratio of the first frame of the n display frames from the average value of the luminance of the n display frames comprises:

9. A luminance ratio determining apparatus of a display frame of a display panel for performing the method of determining a luminance ratio of a display frame of a display panel according to any one of claims 1 to 8, characterized in that the apparatus comprises:

10. A computer readable storage medium storing computer instructions for causing a processor to implement the luminance duty cycle determination method of a display frame of a display panel of any one of claims 1 to 8 when executed.