CN114927097A

CN114927097A - Method and device for determining brightness ratio of display frame of display panel and storage medium

Info

Publication number: CN114927097A
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: 2022-08-19
Anticipated expiration: 2042-06-21
Also published as: CN114927097B

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 and 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 ratio of each brightness measuring point; determining the brightness average value of each display frame according to the brightness difference ratio of the brightness measuring points, and at least determining the brightness ratio of the first frame in the n display frames according to the brightness average values of the n display frames; according to the technical scheme of the embodiment of the invention, the automation of the display frame brightness ratio calculation is realized, and compared with the method for calculating the display frame brightness ratio by manually pulling the data on the software interface, the calculation efficiency and accuracy of the display frame brightness ratio are improved, so that the smear phenomenon in the display panel is solved.

Description

Method and device for determining brightness 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

An Organic Light Emitting Diode (OLED) display panel has been classified as a next generation display technology with great development prospects because of its advantages of thinness, lightness, wide viewing angle, active Light emission, continuously adjustable Light emission color, low cost, fast response speed, low energy consumption, low driving voltage, wide working 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 frame of the display panel is switched from the low gray scale to the high gray scale, the problem that the luminance of the first frame of the high gray scale display frame is lower than the normal luminance generally exists, so that the high gray scale display frame has a smear phenomenon, and the visual experience of the user is poor. For example, when the display frame is switched from a black frame to a white frame, a red frame, a green frame or a blue frame, the luminance of the first frame of the white frame, the red frame, the green frame or the blue frame is lower than the normal luminance due to the effect of the tft delay in the driving circuit, so that the white frame, the red frame, the green frame or the blue frame has a smear phenomenon.

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, which are used for improving the calculation efficiency and accuracy of the brightness ratio of the display frame and further solving the smear phenomenon in the display panel.

According to an aspect of the present invention, there is provided a method for determining a luminance ratio 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 and 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 ratio of each brightness measuring point; the ratio of the brightness difference of the brightness measuring point to be calculated is 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, and the ratio of the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; the brightness reference measuring point is the brightness measuring point which is spaced from the brightness measuring point to be calculated by a preset number of brightness measuring points in the brightness waveform data;

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

Optionally, the determining the average brightness value of each display frame according to the ratio of the brightness differences of the plurality of brightness measurement points includes:

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

and determining the brightness average 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 a start brightness value and an end brightness value of each display frame according to the brightness difference ratio of the plurality of brightness measurement points includes:

in the brightness difference ratios of the brightness measuring points, finding out the brightness difference ratios with n intervals as one frame time and a negative value as n starting brightness difference ratios corresponding to n display frames;

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

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

searching whether the ratio exists in the brightness difference ratios of the brightness measuring points, wherein n interval time is one frame time and the brightness difference ratio with the value smaller than the mth reference value is searched, and m is a positive integer;

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

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

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

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

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

and 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 ratio in the first search interval corresponding to the brightness difference ratio.

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

judging whether the brightness value of the brightness measuring point corresponding to the minimum brightness difference ratio is the minimum brightness value in the corresponding second searching interval or not; wherein one of the brightness values corresponds to a second search interval; the second search interval is composed of the corresponding brightness value and a second preset number of brightness values around the corresponding brightness value;

if so, 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;

and if not, determining that the minimum brightness value in the second search 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 start luminance differences at the corresponding luminance measurement points are n start luminance values corresponding to the n display frames, the method further includes:

in the brightness waveform data, taking the brightness value separated from the ending brightness value of the first frame in the 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 brightness value g-1 and the third floating brightness value g +1 are all larger than the second floating brightness value g-2, the tentative starting brightness value g and the fourth floating brightness value g +2, covering the starting brightness value of the first frame with the smallest one of the first floating brightness value g-1 and the third floating brightness value g + 1;

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

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

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

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

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

According to another aspect of the present invention, there is provided a luminance duty determining apparatus for limiting a 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 and 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 ratio acquisition module is used for calculating the brightness difference ratio of each brightness measuring point; the ratio of the brightness difference of the brightness measuring point to be calculated is 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, and the ratio of the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; the brightness reference measuring point is the brightness measuring point which is spaced from the brightness measuring point to be calculated by a preset number of brightness measuring points in the brightness waveform data;

and the brightness ratio determining module is used for determining the brightness average value of each display frame according to the brightness difference ratio of the brightness measuring points, and at least determining the brightness ratio of the first frame in the n display frames according to the brightness average values 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 a method for determining a luminance ratio of a display frame of a display panel according to any embodiment of the present invention when executed.

According to the technical scheme of the embodiment of the invention, brightness waveform data of n display frames of a 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, wherein n is more than or equal to 2 and is a positive integer; then calculating the brightness difference ratio of each brightness measuring point; and finally, determining the brightness average value of each display frame according to the brightness difference ratio of the brightness measuring points, and determining at least the brightness ratio of the first frame in the n display frames according to the brightness average values of the n display frames, thereby realizing the calculation of the brightness ratio of the display frames. The embodiment of the invention realizes the automation of the calculation of the brightness ratio of the display frame, and compared with the method of calculating the brightness ratio of the display frame by manually pulling data on a software interface, the method improves the calculation efficiency and the accuracy of the brightness ratio of the display frame, thereby solving the phenomenon of smear in the display panel.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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 diagram illustrating a luminance waveform of a display frame according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating 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 illustrating 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 diagram illustrating a luminance difference ratio waveform formed by luminance difference ratios at the respective luminance measurement points in FIG. 2;

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

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention. Moreover, 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 art, an attempt is made to introduce a smear compensation function into an OLED display panel to improve a smear phenomenon, so as to improve user visual experience. In the development and debugging stage of the smear compensation function, the compensation strength is generally determined by calculating the first frame brightness ratio, so that the calculation of the first frame brightness ratio needs to be repeated for multiple times in the whole development and debugging stage. The data processing capacity for calculating the ratio of the brightness of the first frame is large, and when the data displayed on a software interface is manually pulled by a person for calculation, the efficiency is low and errors are easy to occur.

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

The method for determining the luminance ratio of the display frame of the display panel according to the embodiment of the present invention may be implemented by a luminance ratio determining apparatus of the display frame of the display panel, and the luminance ratio determining apparatus of the display frame of the display panel may be configured in an optical fixture capable of measuring luminance 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 and 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 the time of the display frame, and can be acquired through an optical jig capable of acquiring the brightness. The optical fixture includes, but is not limited to, a photodetector, etc., and the optical fixture can sample the brightness of the display frame at a set sampling rate within a predetermined 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 by sampling the brightness of the display frame once. And drawing the brightness waveform data to obtain the brightness waveform of the display frame. That is, the luminance waveform of the display frame can be obtained according to the luminance waveform data of the display frame, and conversely, the luminance waveform data of the display frame can be obtained according to the luminance waveform of the display frame; for the optical fixture, the optical fixture may generate the luminance waveform of the display frame according to the luminance waveform data of the display frame, or derive the luminance waveform data of the display frame according to the luminance waveform of the display frame.

In the development and debugging stage of the smear compensation function of the display panel, because the luminance ratio of the display frames in the display picture in which the smear phenomenon occurs is calculated, and the display picture in which the smear phenomenon occurs generally comprises a plurality of continuous display frames, in the embodiment of the present invention, luminance waveform data of n display frames of the display panel are obtained, specifically, luminance waveform data of n continuous display frames of the display panel can be obtained, and further, luminance waveforms of n continuous display frames can also be obtained. Exemplarily, fig. 2 is a schematic diagram of a luminance waveform of a display frame according to an embodiment of the present invention, and fig. 2 illustrates luminance waveforms of consecutive 6 display frames, where 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, where a horizontal axis in a two-dimensional coordinate system represents time t and a vertical axis represents luminance value nit.

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

Specifically, the brightness measuring point, the brightness value and the brightness difference ratio are in a one-to-one correspondence relationship with each other. And the brightness measuring point to be calculated is the brightness measuring point of which the brightness difference ratio is to be calculated currently. The preset number of the brightness measuring points at intervals between the brightness measuring point to be calculated and the brightness reference measuring point is generally far less than the number of the brightness measuring points of the display frame. Illustratively, the number of luminance measurement points for one display frame may be several tens to several hundreds, and the preset number may be less than about ten.

The preset number which can meet the requirements of actual conditions can be set by combining the sampling rate of the optical jig and the refreshing frequency of the display panel. In case the sampling rate of the optical fixture has been set: the higher the refreshing frequency of the display panel is, the fewer the number of brightness measuring points of the display frame is, so that the preset number can be set to be smaller; the lower the refresh frequency of the display panel is, the larger the number of brightness measurement 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 smaller the number of luminance measurement points of the display frame, and thus the preset number can be set to be smaller.

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

With continued reference to fig. 2, the luminance waveforms of the display frames include a waveform in which the luminance is in an upward trend and a waveform in which the luminance is in a downward trend. In the embodiment of the invention, the difference is made between L1 and L2, so that the brightness change difference between the brightness measuring point to be calculated and the brightness measuring points at preset intervals is obtained; subtracting Lmax from Lmin to obtain a span of luminance in the luminance waveform data; then, the ratio of L1-L2 to Lmax-Lmin is used as the ratio of the brightness difference of the brightness measuring point to be calculated. Based on the above, when P is less than 0, the brightness changes to increase from the brightness measuring point to be calculated to the brightness reference measuring point, and then a section of waveform from the brightness measuring point to be calculated to the brightness reference measuring point in the brightness waveform is a waveform with the brightness in an ascending trend; when P is more than 0, the brightness is changed to be reduced from the brightness measuring point to be calculated to the brightness reference measuring point, and then a section of waveform from the brightness measuring point to be calculated to the brightness reference measuring point in the brightness waveform is a waveform with the brightness in a descending trend; when P is 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 brightness average value of each display frame according to the brightness difference ratio of the brightness measuring points, and determining at least the brightness ratio of the first frame in the n display frames according to the brightness average values of the n display frames.

Specifically, based on the foregoing step 120, when a segment of waveform from the luminance measurement point to be calculated to the luminance reference measurement point is determined according to the luminance difference ratio of the luminance measurement point, and the waveform is a waveform with a luminance increasing trend or a waveform with a luminance decreasing trend, the luminance waveform of each display frame in the luminance waveforms of n display frames can be further determined, so that the luminance waveform data of each display frame in the luminance waveform data of n display frames can be determined. And obtaining the brightness ratio of each display frame according to the brightness average value of each display frame.

The ratio of the brightness of one of the n display frames may be a ratio of the average brightness of the display frame to a maximum value of the average brightness of the remaining n-1 display frames. The first frame of the n display frames is a display frame which is displayed first in the process that the display panel displays the n display frames, namely, the 1 st display frame (for example, the 1 st frame in fig. 2); the last frame of the n display frames is a display frame displayed last in the process that the display panel displays the n display frames, that is, the nth display frame (for example, the 6 th frame in fig. 2).

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

In conclusion, the technical scheme of the embodiment of the invention can realize the calculation of the display frame brightness ratio of the display panel. In the related art, after the luminance waveform data of n display frames of the display panel are acquired, the luminance waveform data displayed on the software interface in the form of rows, columns, tables or the like is manually selected, imported and operated by a person to calculate the luminance ratio of the display frames, so that the efficiency is low, errors are prone to occur, and particularly when the luminance ratio calculation of the display frames needs to be repeatedly performed. In the embodiment of the present invention, the method for determining the luminance ratio of the display frame of the display panel may be implemented by a device for determining the luminance ratio of the display frame of the display panel, and the device may be implemented in a form of hardware and/or software, and does not need to manually select, import, and operate luminance waveform data displayed in a form of a table or a row or a column. The device directly and automatically calculates the brightness ratio of the display frames after acquiring the brightness waveform data of n display frames of the display panel, realizes the automation of the brightness ratio calculation of the display frames, liberates the manual calculation of the brightness ratio of the display frames by people, improves the calculation efficiency and the accuracy of the brightness ratio of the display frames, further solves the problem of the smear phenomenon in the display panel, reduces the manual processing time and saves the labor cost.

On the basis of the foregoing 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, luminance waveform data of n display frames of the display panel are obtained, n is larger than or equal to 2 and is a positive integer, the luminance waveform data comprise a plurality of luminance values of a plurality of luminance measuring points, and one luminance measuring point corresponds to one luminance value.

S220, calculating the brightness difference ratio of each brightness measuring point; the ratio of the brightness difference 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; and the brightness reference measuring points are brightness measuring points which are separated from the brightness measuring points to be calculated by a preset number in the brightness waveform data.

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

Specifically, the starting brightness value of the display frame is the brightness value of the display frame at the starting display time in the display frame brightness waveform; the ending brightness value of the display frame is the brightness value at the moment when the display frame ends the display in the display frame brightness waveform. A display frame starting display stage, wherein the brightness of the display frame is in a rising trend, and the brightness waveform of the display frame is in a rising trend; and at the end of the display frame display stage, the brightness of the display frame tends to be reduced, and the brightness waveform of the display frame tends to be reduced.

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

And S240, determining the brightness average 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, the start luminance value, the end luminance value, and the respective luminance values between the start luminance value and the end luminance value of the display frame constitute all the luminance values of one display frame. The average value of all the brightness values of the display frame is the brightness average value of the display frame.

And S250, at least determining the brightness ratio of the first frame in the n display frames 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 frames is determined, the method is high in practicability, the calculation efficiency and accuracy of the brightness ratio of the display frames are improved, the smear phenomenon in the display panel is solved, meanwhile, the manual processing time is reduced, and the labor cost is saved.

In the above technical solution, specific methods for determining the start brightness value and the end brightness value of each display frame according to the brightness difference ratio of a plurality of brightness measurement points include multiple methods, and some of them are described below by way of example, but are not intended to limit the present invention.

In an 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 larger than or equal to 2 and 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 ratio of each brightness measuring point; the ratio of the brightness difference of the brightness measuring point to be calculated is 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, and the ratio of the difference between the maximum brightness value and the minimum brightness value in the brightness waveform data; and the brightness reference measuring point is a brightness measuring point which is spaced from the brightness measuring point to be calculated by a preset number of brightness measuring points in the brightness waveform data.

S330, in the brightness difference ratios of the brightness measuring points, finding out n brightness difference ratios with interval time as one frame time and a negative value as n starting brightness difference ratios corresponding to n display frames.

Specifically, fig. 5 is a schematic diagram of a luminance difference ratio waveform formed by luminance difference ratios of the respective luminance measurement points in fig. 2, the luminance difference ratio waveform representing a correspondence relationship between the luminance measurement points and the luminance difference ratio, wherein a horizontal axis in a two-dimensional coordinate system represents time t, and a vertical axis represents luminance difference ratio P. In the display frame starting stage, with reference to fig. 5 and fig. 2, because the brightness of the display frame is in a rising trend, the value of the ratio of the brightness differences of the brightness measurement points is negative with a high probability, and especially at the display frame starting time, the value of the ratio of the brightness differences of the brightness measurement points is necessarily negative, that is, P is less than 0; furthermore, among the luminance difference ratios of the plurality of luminance measurement points corresponding to the n display frames, n luminance difference ratios in which the interval time is one frame time and the value is negative inevitably exist. Taking the brightness difference ratio with the n interval times as one frame time and a negative value as n starting brightness difference ratios corresponding to n display frames, wherein one display frame corresponds to one starting brightness difference ratio; the starting luminance difference ratio is a luminance difference ratio at the display frame starting display time.

S340, determining the brightness value of the brightness measuring point corresponding to the n start brightness difference ratios as n start brightness values corresponding to the n display frames, and determining the start brightness value of one of the two adjacent 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 waveform. Therefore, the brightness value of the corresponding brightness measuring point of the display frame starting brightness difference ratio can be determined as the starting brightness value of the display frame.

After the start brightness value of each display frame is determined, the start brightness value of one of the two adjacent display frames may be determined as the end brightness value of the other display frame, that is, the start brightness value of one of the two adjacent display frames is used as the boundary brightness value of the two adjacent display frames.

Further, optionally, the method for determining the ending luminance value of the last frame of the n display frames may include: in the luminance waveform, a luminance value separated from a start luminance value of a last frame of the n display frames by one frame display time is set as an end luminance value of the last frame.

And S350, determining the brightness average 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.

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

In summary, according to the technical scheme of the embodiment of the present invention, the start brightness value and the end brightness value of each display frame in n display frames are obtained according to the value law of the brightness difference ratio of the brightness measurement points at the display frame start display stage, and according to the display time of the display frames and the number of the display frames.

To this end, the technical solution of the present invention may also optimize the previous embodiment, 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 provided in 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 and 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 ratio of each brightness measuring point; the ratio of the brightness difference 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; and the brightness reference measuring point is a brightness measuring point which is spaced from the brightness measuring point to be calculated by a preset number of brightness measuring points in the brightness waveform data.

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

Specifically, in the display frame start display phase, the rise in luminance may deviate from the monotonically increasing rise to fluctuate, and thus the luminance difference proportion taking a negative value may be plural. In order to ensure that the determined starting brightness difference ratio is infinitely close to the actual brightness difference ratio at the starting display moment 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 defines a range for selecting the starting brightness difference ratio by the reference value. That is, there is a possibility that a luminance difference duty that takes a value negative and smaller than the reference value is elected as a starting luminance difference duty; further, the n interval times are the luminance difference ratios in which the frame time is negative and smaller than the reference value, and there is a possibility that the n interval times are selected as the n start luminance difference ratios.

On the basis, the multiple measurements of the brightness waveforms of the n display frames are considered, and the measurements may be respectively performed in different states of the display panel, or respectively performed in different states of the optical fixture, or respectively performed in different measurement environments, so that a fixed reference value cannot be well adapted to the brightness waveforms of the n display frames measured each time. Accordingly, the embodiment of the invention sets a plurality of reference values A ₁ 、A ₂ 、A ₃ …A _m 、A _m+1 …, so that the brightness waveforms of n display frames measured at a time can have corresponding suitable reference values. For example, the brightness waveform of n display frames measured for the 1 st time can be based on the 1 st reference value A ₁ ，A ₁ Searching for a start brightness difference ratio infinitely close to the start display time of the display frame and the real actual brightness difference ratio for a preset reference value (namely the preset reference value); and the brightness waveform of n display frames measured for the 3 rd time can be based on the 4 th reference value A ₄ The start luminance difference ratio infinitely close to the start display time of the display frame and the real actual luminance difference ratio is found.

S440, whether the brightness difference proportion exists in the brightness measuring points is searched, wherein n interval time is one frame time and the value is smaller than the mth reference value A _m M is a positive integer.

If yes, go to step S450; if not, using A _m ＝A _m + dA executes step S440.

Wherein, A is _m ＝A _m The meaning of + dA performing step S440 is: whether the brightness difference exists or not is searched in the brightness difference ratio of a plurality of brightness measuring points, n interval time is one frame time, and the value is less than the mth +1 reference value A _m+1 The ratio of the luminance difference of; wherein A is _m+1 ＝A _m + dA, dA are preset amplitude adjustment values. Illustratively, the reference value A is preset ₁ May be a negative number and the preset amplitude adjustment value dA may be a positive number.

Specifically, the 1 st reference value A is preset ₁ After the amplitude adjustment value dA is preset, the brightness difference ratio of a plurality of brightness measurement points can be searched, whether n intervals are one frame time and the value is smaller than the 1 st reference value A ₁ The ratio of the luminance difference of; if yes, go to step S450;

if not, adjusting the reference value, namely the 1 st reference value A ₁ The superposed preset amplitude regulation value dA is used as a 2 nd reference value A ₂ Continuously searching in the brightness difference ratio of a plurality of brightness measuring points, and judging whether n interval time is a frame time and the value is less than the 2 nd reference value A ₂ Luminance difference of (a); if yes, go to step S450;

if not, continuing to adjust the reference value, namely the 2 nd reference value A ₂ After the preset amplitude adjustment value dA is superposed, the superposed value is used as a 3 rd reference value A ₃ Continuously searching in the brightness difference ratio of multiple brightness measuring points, and determining whether there are n interval times as a frame time and the value is less than the 3 rd reference value A ₃ Luminance difference of (a); if yes, go to step S450;

if not, continuing to adjust the reference value to A ₄ Continuously searching in the brightness difference ratio of multiple brightness measuring points, and determining whether there are n interval times as a frame time and the value is less than 4 th reference value A ₄ Until the n interval times are found to be the frame time and the value of the brightness difference is smaller than the brightness difference ratio corresponding to the proper reference value.

S450, determining the starting brightness values corresponding to the n display frames according to the brightness values of the brightness measuring points corresponding to the n brightness difference ratios, and determining the starting brightness value of one of the two adjacent display frames as the ending brightness value of the other display frame.

Optionally, the method for determining the ending luminance value of the end frame of the n display frames may include: in the luminance waveform data, a luminance value separated by one frame display time from a start luminance value of a last frame among n display frames is set as an end luminance value of the last frame.

And S460, determining the brightness average 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.

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

To sum up, according to the technical solution of the embodiment of the present invention, on the premise of setting the value law of the luminance difference ratio of the luminance measurement point at the display start stage of the display frame, and according to the display time of the display frame and the number of the display frames, the preset reference value a is set 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, and 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.

Based on the foregoing embodiment, in order to further ensure that the determined start luminance difference ratio is infinitely close to the actual luminance difference ratio at the start display time of the display frame, so as to ensure the accuracy of the luminance average value of the display frame, and further improve the accuracy of the luminance ratio of the display frame, 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, 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 ratios in step S450 may further include:

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

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

Specifically, the first preset number is generally much smaller than the number of brightness measurement points of the display frame, and the first preset number capable of meeting the needs of actual conditions can be set by combining the sampling rate of the optical jig and the refresh frequency of the display panel; illustratively, the greater the number of brightness measurement points of the display frame, the greater the first preset number may be, and the smaller the number of brightness measurement points of the display frame, the smaller the first preset number may be.

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

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

Specifically, under the condition that the brightness difference ratio is judged to be the minimum brightness difference ratio in the corresponding first search interval, the brightness value of the brightness measuring point corresponding to the brightness difference ratio is determined as the starting brightness value of the display frame, so that the brightness difference ratio for determining the starting brightness value of the display frame is ensured to be the minimum brightness difference ratio in the corresponding first search interval, and the brightness difference ratio for determining the starting brightness value of the display frame is prevented from being the brightness difference ratio at the small fluctuation peak when the brightness is slightly fluctuated in the brightness rising process at the display frame starting display stage.

And 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 proportion in the first searching interval corresponding to the brightness difference proportion.

Specifically, under the condition that the brightness difference proportion is judged not to be the minimum brightness difference proportion in the corresponding first search interval, the brightness value of the brightness measuring point corresponding to the minimum brightness difference proportion in the first search interval corresponding to the brightness difference proportion is determined as the starting brightness value of the display frame, so that the determined starting brightness value is ensured to be infinitely close to the real actual brightness value at the display starting time of the display frame.

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

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

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

Specifically, the second preset number is generally much smaller than the number of brightness measurement points of the display frame, and the second preset number capable of meeting the actual condition requirement can be set by combining the sampling rate of the optical jig and the refresh frequency of the display panel; illustratively, the greater the number of brightness measurement points of the display frame, the greater the second preset number may be, and the smaller the number of brightness measurement points of the display frame, the smaller the second preset number may be.

Based on the foregoing steps S4502 and S4503, after n minimum luminance difference occupation ratios for determining the start luminance values of the display frame are obtained, a second search interval in which the luminance value of each minimum luminance difference occupation ratio corresponds to the luminance measurement point is located is determined based on a second preset number, and then it is determined whether the luminance value corresponding to each minimum luminance difference occupation ratio is the minimum luminance value in the corresponding second search interval.

S45032, the brightness value of the brightness measuring point corresponding to the minimum brightness difference proportion is determined to be the starting brightness value corresponding to the display frame.

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

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

Specifically, under the condition that the brightness value corresponding to the minimum brightness difference ratio is not the minimum brightness value in the second search interval where the brightness value is located, the minimum brightness value in the second search interval is determined as the starting brightness value corresponding to the display frame, so that the determined starting brightness value is ensured to be infinitely close to the actual brightness value at the display frame starting display moment.

Based on any of the above embodiments, when the display frame 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 frame, which is usually the high gray level display frame, is relatively severely lower than the normal luminance, but the luminance of the display frames (e.g., the 2 nd frame and 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 magnitude of the compensation strength is generally determined by calculating the brightness ratio of the first frame. The ratio of the brightness of the first frame in the n display frames is the ratio of the brightness average value of the first frame to the maximum value in the brightness average values of the rest 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; the starting brightness value and the ending brightness value of the first frame influence the determination of all brightness values of the first frame, and all brightness values of the first frame influence the average brightness value of the first frame. Therefore, it is the key to accurately determine the start brightness value of the first frame, and thus the brightness 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 luminance average 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, taking a brightness value which is separated from an ending brightness value of a first frame in n display frames by one frame time as a provisional starting brightness value g of the first frame, selecting two brightness values before the provisional 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 provisional starting brightness value g as a third floating brightness value g +1 and a fourth floating brightness value g +2 in sequence.

S232, judging the magnitude of 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, wherein the judgment results include but are not limited to the following four types:

1) 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, the starting luminance value of the first frame is covered with the smallest one of the first floating luminance value g-1 and the third floating luminance value g + 1.

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 starting luminance value g, and the fourth floating luminance value g +2, it is illustrated 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 starting luminance value g may be located together are in the shape of the letter "M". The letter "M" includes two endpoints, two vertices (left and right vertices), and a bottom, the second floating luminance value g-2 and the fourth floating luminance value g +2 are at the two endpoints of the letter "M", respectively, the first floating luminance value g-1 and the third floating luminance value g +1 are at the two vertices of the letter "M", respectively, and the tentative starting luminance value g is at the bottom of the letter "M".

When the first floating brightness value g-1 is greater than the third floating brightness value g +1, it indicates that the height of the right vertex where the third floating brightness value g +1 is located is less than the height of the left vertex where the first floating brightness value g-1 is located, and further indicates that the brightness at the initial display stage of the first frame is gradually increased and increased from the third floating brightness value g +1, at this time, the starting brightness value of the first frame is covered by the third floating brightness value g +1, that is, the third floating brightness value g +1 is determined as the final starting brightness value of the first frame. When the first floating brightness value g-1 is smaller than the third floating brightness value g +1, it can be shown that the brightness at the initial display stage of the first frame is really gradually increased from the first floating brightness value g-1, and at this time, the first floating brightness value g-1 is determined as the final starting brightness value of the first frame.

2) And if the first floating brightness value g-1 and the third floating brightness value g +1 are smaller than the second floating brightness value g-2, the tentative starting brightness value g and the fourth floating brightness value g +2, covering the starting brightness value of the first frame by using the minimum one of the tentative starting brightness value g and the fourth floating brightness value g + 2.

Specifically, when the first floating luminance value g-1 and the third floating luminance value g +1 are both smaller than the second floating luminance value g-2, the tentative starting luminance value g, and the fourth floating luminance value g +2, 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 starting luminance value g +2 may be collectively located are in the shape of a letter "W". The letter "W" includes two end points (left and right end points), a vertex, and two bottom ends, the second and fourth floating luminance values g-2 and g +2 are respectively located at the two end points of the letter "W", the first and third floating luminance values g-1 and g +1 are respectively located at the two bottom ends of the letter "W", and the tentative starting luminance value g is located at the vertex of the letter "W".

When the provisional starting brightness value g is greater than the fourth floating brightness value g +2, it is indicated that the brightness at the starting display stage of the first frame is actually gradually increased from the fourth floating brightness value g +2, and at this time, the starting brightness value of the first frame is covered by the fourth floating brightness value g +2, that is, the fourth floating brightness value g +2 is determined as the final starting brightness value of the first frame. When the temporary start brightness value g is smaller than the fourth floating brightness value g +2, it is indicated that the brightness at the start of display in the first frame gradually increases from the temporary start brightness value g, and at this time, the temporary start brightness value g is determined as the final start brightness value of the first frame.

3) If the second floating brightness value g-2, the first floating brightness value g-1, the tentative starting brightness value g, the third floating brightness value g +1 and the fourth floating brightness value g +2 are sequentially increased, the second floating brightness value g-2 is adopted to cover the starting brightness value of the first frame, which indicates that the brightness in the starting display stage of the first frame is actually gradually increased and increased from the second floating brightness value g-2.

4) If the second floating brightness value g-2, the first floating brightness value g-1, the tentative starting brightness value g, the third floating brightness value g +1 and the fourth floating brightness value g +2 are sequentially decreased, the fourth floating brightness value g +2 is adopted to cover the starting brightness value of the first frame, and at this time, it is indicated that the brightness at the starting display stage of the first frame is actually gradually increased and increased from the fourth floating brightness value g + 2.

To sum up, according to the technical solution of the embodiment of the present invention, a luminance value separated from an end luminance value of a first frame of n display frames by one frame time is used 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 before and after the tentative start luminance value g; and then, the starting point (namely the starting point of monotonically increasing brightness) of gradually increasing brightness in the initial display stage of the first frame is obtained by judging the magnitude of 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 provisional starting brightness value g, and the brightness value of the starting point is determined as the final starting brightness value of the first frame, so that the accuracy of the starting 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 luminance ratio determining apparatus for a display frame of a display panel according to an embodiment of the present invention, the apparatus is configured to execute the luminance ratio determining method for a display frame of a display panel according to any of the embodiments, and referring to fig. 9, the apparatus includes:

a brightness waveform data obtaining module 10, configured to obtain brightness waveform data of n display frames of a display panel, where n is greater than or equal to 2 and is a positive integer, the brightness waveform data includes multiple brightness values of multiple brightness measurement points, and one brightness measurement point corresponds to one brightness value;

a brightness difference ratio obtaining module 20, configured to calculate a brightness difference ratio of each brightness measurement point; the ratio of the brightness difference 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 separated from the brightness measuring points to be calculated by a preset number in the brightness waveform data;

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

The device and the method for determining the brightness ratio of the display frame of the display panel belong to the same inventive concept, can achieve the same technical effect, and repeated content is not repeated here.

An embodiment of the present invention further provides a computer-readable storage medium, where computer instructions are stored, and the computer instructions are configured to, when executed by a processor, implement the method for determining a luminance ratio of a display frame of a display panel according to any of the above embodiments.

A computer program for implementing the 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 performed. A computer program can execute entirely on a machine, partly on a machine, as a stand-alone software package partly on a machine and partly on a remote machine or entirely on a 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. A 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) by which a user may 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 can 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, speech, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a back-end 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 back-end, 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. A client and server are generally 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 host and VPS service are overcome.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining a brightness ratio of a display frame of a display panel is characterized by comprising the following steps:

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

2. The method as claimed in claim 1, wherein the determining the average luminance value of each of the display frames according to the luminance difference ratios of the plurality of luminance measurement points comprises:

3. The method according to claim 2, wherein said determining a start brightness value and an end brightness value of each of said display frames based on brightness difference ratios of a plurality of said brightness measure points comprises:

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

4. The method as claimed in claim 2, wherein the determining the start brightness value and the end brightness value of each display frame according to the brightness difference ratios of the plurality of brightness measuring points comprises:

5. The method as claimed in claim 4, wherein the determining the starting luminance values corresponding to the n display frames according to the luminance values of the luminance measuring points corresponding to the n luminance difference ratios comprises:

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

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 proportion in the first searching interval corresponding to the brightness difference proportion.

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

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

in the brightness waveform data, taking the brightness value which is separated from the ending brightness value of the first frame in the 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 brightness value g-1 and the third floating brightness value g +1 are all greater than the second floating brightness value g-2, the tentative starting brightness value g, and the fourth floating brightness value g +2, then covering the starting brightness value of the first frame with the smallest one of the first floating brightness value g-1 and the third floating brightness value g + 1;

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

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

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

10. A computer-readable storage medium storing computer instructions for causing a processor to implement the method for determining luminance ratio of display panel display frames according to any one of claims 1 to 8 when executed.