CN109144200B - Picture display method, computer storage medium and display device - Google Patents
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Abstract
The invention discloses a picture display method, a computer storage medium and a display device, wherein the picture display method comprises the following steps: receiving a preset displayed picture, and acquiring the brightness value of each sub-pixel in the picture; judging whether the picture is a heavy-load picture: calculating the brightness value difference of the sub-pixels in the picture in the sampling area, wherein if the picture comprises a first sub-pixel of which the brightness value difference is greater than a preset threshold value, the picture is a heavy-load picture, and otherwise, the picture is a light-load picture; if the picture is a heavy-load picture, the heavy-load picture is converted into a light-load picture by adjusting the brightness value of the first sub-pixel; and driving and displaying the picture according to the brightness value of the sub-pixel corresponding to the light-load picture. When the picture is a heavy-load picture, the method can reduce the difference of the brightness values between the sub-pixels in adjacent rows driven by the same data line and lighten the load of the drive IC on the premise of keeping the whole brightness value of the display picture unchanged, thereby avoiding the overheating of the drive IC.
Description
Technical Field
The present invention relates to the field of image display technologies, and in particular, to a screen display method, a computer storage medium, and a display device.
Background
With the development of the related art of the display panel, the requirements for the switching speed and the image quality of the display screen are higher and higher, and it is necessary to increase the load of the driving IC to obtain higher switching speed and higher image quality, especially when the display panel needs to display a heavy-duty screen with large data signal variation (refer to the voltage waveform diagram corresponding to the example heavy-duty screen shown in fig. 1, where V represents voltage, T represents time, H represents high level, and L represents low level, in the heavy-duty screen, the data voltage is frequently switched between high level and low level), so that the display brightness of consecutive rows of sub-pixels is frequently switched between low brightness and high brightness, the driving IC is under high load, which generates too high temperature, easily causes damage to the driving IC, makes it unable to work normally, and causes a large amount of consumption of current, the power consumption of the display panel is improved. The overheating problem of the driver IC is usually solved by adding a heat sink to the driver IC, but this will undoubtedly increase the production cost, and is not beneficial to mass production of the display panel, so that other solutions are necessary to solve the above problem.
Disclosure of Invention
In view of the above, the present invention provides a screen display method, a computer storage medium and a display device to solve the above problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a picture display method, which comprises the following steps: receiving a preset displayed picture, and acquiring the brightness value of each sub-pixel in the picture; judging whether the picture is a heavy-load picture: calculating the brightness value difference of the sub-pixels in the picture in the sampling area, wherein if the picture comprises a first sub-pixel of which the brightness value difference is greater than a preset threshold value, the picture is a heavy-load picture, and otherwise, the picture is a light-load picture; if the picture is a heavy-load picture, the heavy-load picture is converted into a light-load picture by adjusting the brightness value of the first sub-pixel; driving and displaying the picture according to the brightness value of the sub-pixel corresponding to the light-load picture; wherein the sampling area is a plurality of continuous columns of sub-pixels in at least three continuous rows of sub-pixels.
Preferably, the picture comprises I rows × J columns of sub-pixels, and the luminance value difference amount of the sub-pixels is calculated according to the following formula (I):
wherein Δ is a luminance value difference of the sub-pixels, M is a luminance value of the sub-pixels, and the sampling region is the sub-pixels from the kth column to the l column in the sub-pixels from the ith row to the (i + 2) th row; i and J are positive integers, I belongs to {1, 2, 3, …, I-2}, J belongs to {1, 2, 3, …, J }, and k belongs to [1, J }]，l∈[1，J]And k is not more than j, l is not less than j.
Preferably, the lower bound of the number of columns of the sampling region is k ═ j.
Preferably, the upper bound of the number of columns of the sampling region is l e [ k +35, k +53 ].
Preferably, the upper bound of the number of columns of the sampling region is l ═ k + 44.
Preferably, a target luminance value T of a first sub-pixel is set, and an adjusted luminance value N of the first sub-pixel is obtained by calculating according to a magnitude relationship between the target luminance value T of the first sub-pixel and a luminance value M before adjustment: when T is larger than or equal to M, calculating and obtaining the adjusted brightness value N of the first sub-pixel according to the following formula (II): n + γ (T-M); when T is less than M, calculating and obtaining the adjusted brightness value N of the first sub-pixel according to the following formula (III): N-M- γ (M-T); wherein gamma is a preset adjusting coefficient.
Preferably, the target brightness value T of the first sub-pixel is obtained by calculation according to the following formula (iv): t ═ Mi，j+Mi+1，j)/2。
Preferably, the preset adjustment coefficient is γ ∈ (0, 1 ].
The present invention also provides a computer storage medium having stored thereon a picture display program for execution by a processor to implement the picture display method as described above.
The invention also provides a display device, which comprises a memory, a processor and a picture display program which is stored on the memory and can run on the processor, wherein the picture display program is used for being executed by the processor to realize the picture display method.
The invention provides a picture display method, a computer storage medium and a display device, which firstly adjust the brightness value of a first sub-pixel in a heavy-load picture by judging whether a preset display picture is the heavy-load picture, so that the heavy-load picture is converted into a light-load picture, and finally the light-load picture is used for displaying, so that on the premise of keeping the whole brightness value of the display picture unchanged, the brightness change between adjacent rows of sub-pixels driven by the same data line is reduced, the variation of data signals is reduced, the load of a drive IC is further reduced, the problem of overheating when the drive IC displays the heavy-load picture is solved with lower cost, and the power consumption of a display panel is reduced.
Drawings
FIG. 1 is a voltage waveform diagram of a data signal corresponding to an exemplary overloaded picture;
fig. 2 is a flowchart of a screen display method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the invention shown in the drawings and described in accordance with the drawings are exemplary only, and the invention is not limited to these embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps that are closely related to the solution according to the present invention are shown in the drawings, and other details that are not relevant are omitted.
Referring to fig. 2, the present embodiment provides a method for displaying a picture, including the steps of:
s1, receiving a picture to be displayed, and acquiring the brightness value of each sub-pixel in the picture.
S2, judging whether the picture is a heavy-load picture: and calculating the brightness value difference of the sub-pixels in the picture in the sampling area, wherein if the picture comprises a first sub-pixel of which the brightness value difference is greater than a preset threshold value, the picture is a heavy-load picture, and otherwise, the picture is a light-load picture. If the picture is a heavy-load picture, the heavy-load picture is converted into a light-load picture by adjusting the brightness value of the first sub-pixel.
The sampling area is a plurality of continuous columns of sub-pixels in at least three continuous rows of sub-pixels, and the preset threshold is set by a user and is used for judging the brightness value difference corresponding to the first sub-pixel forming the reloading picture according to the standard of the user.
In this embodiment, the frame includes I rows × J columns of sub-pixels, and the luminance value difference amount of the sub-pixels is calculated according to the following formula (I):
wherein Δ is a difference between luminance values of the sub-pixels, M is a luminance value of the sub-pixels, i is a number of rows where the sub-pixels are located, j is a number of columns where the sub-pixels are located, k is a lower bound of the number of columns of the sampling region, l is an upper bound of the number of columns of the sampling region, and the sampling region is a sub-pixel from a kth column to a l column of the sub-pixels from the ith row to the (i + 2) th row; i and J are positive integers, I belongs to {1, 2, 3, …, I-2}, J belongs to {1, 2, 3, …, J }, k belongs to [1, J ], l belongs to [1, J ], and k is less than or equal to J and l is more than or equal to J. In this embodiment, l ≧ k +1, i.e., the sampling region includes at least two consecutive columns of subpixels.
The above process is equivalent to that when I row × J column sub-pixels are scanned line by line, a plurality of columns of sub-pixels in the range of [ k, l ] are selected as samples from three consecutive rows of the array where the currently processed sub-pixels are located, the luminance value difference Δ of the samples is obtained (as can be seen from the above formula (I), the luminance value difference of the sub-pixels is the average of absolute values of differences between luminance values of the same column of sub-pixels and the next column of sub-pixels within the sampling range), and whether the sub-pixel is the first sub-pixel that makes the display screen become a heavy-load screen is determined according to whether the luminance value difference Δ exceeds a preset threshold. Even if the luminance value difference between the sub-pixels in the previous row is large, after the sub-pixels in the previous row are adjusted, the luminance value difference delta at the position is lower than the preset threshold value, a heavy-load picture is not formed, and the sub-pixels in the edge row do not need to be adjusted. For example, when there are three consecutive rows of sub-pixels alternately switched between high and low luminance, it is assumed that the first sub-pixel constituting the overloaded picture exists among the sub-pixels. In the above process, therefore, the sampling region is a plurality of consecutive columns of sub-pixels in at least three consecutive rows of sub-pixels, I ∈ {1, 2, 3, …, I-2 }.
Illustratively, the lower bound of the number of columns of the sampling region is k ═ j. Namely, the column where the first sub-pixel currently processed is located is defined as the first column of the sampling area, and the column and a plurality of columns on one side of the column are sampled.
Illustratively, the upper bound on the number of columns of the sampling region is l ∈ [ k +35, k +53 ]. Generally, one pixel unit comprises three sub-pixels of RGB, and the embodiment defines that 36-54 columns including the column where the first sub-pixel currently processed is located are sampled, which is equivalent to taking pixel units of 12-18 columns including the column where the first sub-pixel currently processed is located as samples.
Further, the upper bound of the number of columns of the sampling region is l ═ k + 44. In this embodiment, through experiments, sampling is performed in 45 columns including the column where the currently processed first sub-pixel is located, which is equivalent to taking a pixel unit of 15 columns including the column where the currently processed first sub-pixel is located as a sample, and taking 15 columns as an optimal value of the number of samples, so that when the image display method is adopted, a lower algorithm execution cost can be maintained, and an obtained light-load image can be generated in the row direction of the arrangement of the sub-pixels, thereby avoiding display overlapping between the first sub-pixel subjected to luminance value adjustment and other sub-pixels in adjacent columns, and causing problems such as display blurring or tailing.
Specifically, a target brightness value T of a first sub-pixel is set, and according to a magnitude relation between the target brightness value T of the first sub-pixel and a brightness value M before adjustment, an adjusted brightness value N of the first sub-pixel is calculated and obtained:
when T is larger than or equal to M, calculating and obtaining the adjusted brightness value N of the first sub-pixel according to the following formula (II): n + γ (T-M);
when T is less than M, calculating and obtaining the adjusted brightness value N of the first sub-pixel according to the following formula (III): N-M- γ (M-T).
Wherein gamma is a preset adjusting coefficient. The preset adjustment coefficient gamma is a coefficient freely set by a user, the adjustment degree of the brightness value of the first sub-pixel is controlled by controlling the size of the adjustment coefficient gamma, and the larger the adjustment coefficient gamma is, the larger the change of the brightness value of the first sub-pixel after adjustment is, the closer the first sub-pixel is to the target brightness value of the first sub-pixel. In the present embodiment, the preset adjustment coefficient is γ ∈ (0, 1).
Calculating and acquiring a target brightness value T of the first sub-pixel according to the following formula (IV):
T＝(Mi，j+Mi+1，j)/2；
the target luminance value T of the first sub-pixel is an average value between the luminance value of the first sub-pixel and the luminance value of the sub-pixel in the next row in the same column, and represents a variation trend of the luminance value of the first sub-pixel or an adjustment direction of the luminance value of the first sub-pixel.
As can be seen from the formulas (ii) and (iii) for obtaining the adjusted luminance value N of the first subpixel through the above calculation, no matter how the magnitude relationship between the target luminance value T of the first subpixel and the luminance value M before adjustment is, after the first subpixel is processed, the luminance value of the first subpixel changes toward the target luminance value thereof, so that the difference between the luminance value of the first subpixel and the luminance value of the next adjacent subpixel in the same column is reduced, and the overall luminance of the display screen remains unchanged. Therefore, by adjusting the brightness of the first sub-pixel, the variation of the corresponding data signal is reduced, thereby reducing the load of the driving IC, solving the overheating problem of the driving IC with lower cost, and reducing the power consumption of the display panel.
And S3, driving and displaying the picture according to the brightness value of the sub-pixel corresponding to the light-load picture.
Finally, if the picture is originally a light-load picture, the picture can be directly displayed; if the picture is originally a heavy-load picture, the picture is changed into a light-load picture to be displayed through the first sub-pixel after adjustment.
The above-mentioned image display method is applied to a display panel with 1G1D (1Gate1Data, i.e. 1Data line corresponds to 1 scanning line), and the same Data line drives the same color sub-pixels.
An embodiment of the present invention further provides a computer storage medium, where a screen display program is stored on the computer readable storage medium, where the screen display program is used for being executed by a processor to implement the screen display method described above.
The embodiment of the invention also provides a display device, which comprises a memory, a processor and a picture display program which is stored on the memory and can run on the processor, wherein the picture display program is used for being executed by the processor to realize the picture display method.
Wherein the memory includes at least one type of readable storage medium for storing an operating system installed in the display device and various types of application software, such as codes of the screen display program. In addition, the memory may also be used to temporarily store various types of data that have been output or are to be output.
The processor may be a Central Processing Unit (CPU), controller, microcontroller, microprocessor, or other data Processing chip in some embodiments. The processor is typically used to control the overall operation of the electronic device. In this embodiment, the processor is configured to run a program code stored in the memory or process data, for example, run the screen display program.
In summary, the image display method, the computer storage medium and the display device provided in this embodiment adjust the brightness value of the first sub-pixel in the heavy-loaded image by determining whether the predetermined display image is the heavy-loaded image, so that the heavy-loaded image is converted into the light-loaded image, and finally the light-loaded image is used for displaying, so that on the premise of keeping the overall brightness value of the display image unchanged, the brightness change between adjacent rows of sub-pixels driven by the same data line is reduced, the variation of the data signal is reduced, the load of the driver IC is further reduced, the problem of overheating when the driver IC displays the heavy-loaded image is solved at a lower cost, and the power consumption of the display panel is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (9)
1. A picture display method, comprising the steps of:
receiving a preset displayed picture, and acquiring the brightness value of each sub-pixel in the picture;
judging whether the picture is a heavy-load picture: calculating the brightness value difference of the sub-pixels in the picture in the sampling area, wherein if the picture comprises a first sub-pixel of which the brightness value difference is greater than a preset threshold value, the picture is a heavy-load picture, and otherwise, the picture is a light-load picture;
if the picture is a heavy-load picture, the heavy-load picture is converted into a light-load picture by adjusting the brightness value of the first sub-pixel;
driving and displaying the picture according to the brightness value of the sub-pixel corresponding to the light-load picture;
the sampling area is a plurality of continuous columns of sub-pixels in at least three continuous rows of sub-pixels;
the picture comprises I rows and J columns of sub-pixels, and the brightness value difference quantity of the sub-pixels is calculated according to the following formula (I):
wherein Δ is a luminance value difference of the sub-pixels, M is a luminance value of the sub-pixels, and the sampling region is the sub-pixels from the kth column to the l column in the sub-pixels from the ith row to the (i + 2) th row;
i and J are positive integers, I belongs to {1, 2, 3, …, I-2}, J belongs to {1, 2, 3, …, J }, k belongs to [1, J ], l belongs to [1, J ], and k is less than or equal to J and l is more than or equal to J.
2. The screen display method according to claim 1, wherein a lower bound of the number of columns of the sampling region is k ═ j.
3. The picture display method according to claim 1, wherein an upper bound of the number of columns of the sampling region is l e [ k +35, k +53 ].
4. The screen display method according to claim 3, wherein an upper limit of the number of columns of the sampling region is l ═ k + 44.
5. The image display method according to any one of claims 1 to 4, wherein a target luminance value T of a first sub-pixel is set, and an adjusted luminance value N of the first sub-pixel is obtained by calculating according to a magnitude relationship between the target luminance value T of the first sub-pixel and a luminance value M before adjustment:
when T is larger than or equal to M, calculating and obtaining the adjusted brightness value N of the first sub-pixel according to the following formula (II): m + γ (T-M);
when T is less than M, calculating and obtaining the adjusted brightness value N of the first sub-pixel according to the following formula (III): N-M- γ (M-T);
wherein gamma is a preset adjusting coefficient.
6. The picture display method according to claim 5, wherein the target brightness value T of the first sub-pixel is obtained by calculation according to the following formula (IV):
T＝(Mi，j+Mi+1，j)/2。
7. the picture display method according to claim 5, wherein the preset adjustment coefficient is γ ∈ (0, 1).
8. A computer storage medium, characterized in that a screen display program is stored on the computer-readable storage medium, the screen display program being for execution by a processor to implement the screen display method according to any one of claims 1 to 7.
9. A display apparatus comprising a memory, a processor, and a screen display program stored on the memory and executable on the processor, the screen display program for execution by the processor to implement the screen display method of any one of claims 1-7.
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| CN111078601B (en) * | 2019-12-18 | 2022-11-15 | 成都国科微电子有限公司 | Method and device for adjusting bus bandwidth use peak value |
| CN113823237B (en) * | 2021-09-16 | 2022-09-27 | 惠州华星光电显示有限公司 | Display device and driving method thereof |
| CN113870761B (en) * | 2021-09-27 | 2023-05-30 | 惠州华星光电显示有限公司 | Display device driving method and display device |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant after: TCL China Star Optoelectronics Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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