CN114637483A

CN114637483A - Display data compensation method and device, computer readable medium and electronic equipment

Info

Publication number: CN114637483A
Application number: CN202210192380.8A
Authority: CN
Inventors: 黄曾�
Original assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-06-17

Abstract

The embodiment of the application provides a display data compensation method and device, a computer readable medium and electronic equipment. The display data compensation method comprises the following steps: scanning each pixel on the display equipment line by line to obtain the gray value of each pixel; judging whether each pixel is a low-gray pixel or not according to a preset gray threshold; determining the low gray scale ratio of each line according to the number of the low gray scale pixels of the line; determining display data compensation parameters corresponding to each row according to the low gray ratio of each row of pixels, wherein the display data compensation parameters comprise sensing interval time and data writing time; and adjusting the sensing interval time and the data writing time of each row of pixels during the display data compensation of the target frame according to the display data compensation parameters corresponding to each row. According to the method and the device, the difference between the threshold voltage detection value and the real threshold voltage caused by different mobility under different display brightness is reduced by changing the sensing interval time and the data writing time.

Description

Display data compensation method and device, computer readable medium and electronic equipment

Technical Field

The present application relates to the field of display technologies, and in particular, to a display data compensation method, an apparatus, a computer-readable medium, and an electronic device.

Background

In a pixel driving circuit of an organic light emitting display device, a plurality of thin film transistors are often used, and the thin film transistors have different mobilities in different thin film transistors due to a crystallization process in a manufacturing process, so that threshold voltages of different thin film transistors are different, and images are displayed unevenly among pixel regions.

The internal compensation algorithm generally detects a threshold voltage in a fixed sensing interval, and considering that a crystallization process causes different mobilities in different thin film transistors, when a sensing interval is fixed, the threshold voltage detected by the same thin film transistor may be different corresponding to the mobilities. When the display panel displays a low gray level within a fixed sensing interval, the threshold voltage measured when the mobility is low due to the influence of the display gray level may be higher than the actual threshold voltage, affecting the compensation effect accuracy.

Considering that the crystallization process causes different mobilities in different tfts, when the sensing interval is fixed, the threshold voltage detected by the same tft may be different corresponding to the mobilities. When the display panel displays a low gray level within a fixed sensing interval, the threshold voltage measured when the mobility is low may be higher than the actual threshold voltage, which affects the compensation effect accuracy, and the sensing time for detecting the compensation needs to be adjusted according to the display brightness.

Disclosure of Invention

Embodiments of the present application provide a display data compensation method, apparatus, computer readable medium, and electronic device, so as to reduce a problem of a difference between a threshold voltage detection value and a true threshold voltage caused by a difference in mobility at different display luminances.

Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.

According to an aspect of an embodiment of the present application, there is provided a display data compensation method applied to a display device including a plurality of pixels, the method including: scanning each pixel on the display equipment line by line to obtain the gray value of each pixel; judging whether each pixel is a low-gray pixel or not according to a preset gray threshold; determining the low gray scale ratio of each line according to the number of the low gray scale pixels of the line; determining display data compensation parameters corresponding to each row according to the low gray ratio of each row of pixels, wherein the display data compensation parameters comprise sensing interval time and data writing time; and adjusting the sensing interval time and the data writing time of each row of pixels during the display data compensation of the target frame according to the display data compensation parameters corresponding to each row.

In some embodiments of the present application, the determining, according to the predetermined gray threshold, whether each pixel is a low gray pixel includes: if the gray scale of the pixel is smaller than the first preset gray scale threshold value, the pixel is a low-gray scale pixel; and if the gray scale of the pixel is greater than the first preset gray scale threshold value, the pixel is a high gray scale pixel.

In some embodiments of the present application, the determining, according to the predetermined grayscale threshold, whether each pixel is a low-grayscale pixel includes: if the gray scale of the pixel is smaller than the second preset gray scale threshold value, the pixel is a low-gray scale pixel; and if the gray scale of the pixel is greater than the third preset gray scale threshold value, the pixel is a high gray scale pixel.

In some embodiments of the present application, the determining the low gray scale fraction of each line according to the number of low gray scale pixels of the line specifically includes: determining the sum of the number of low-gray pixels and high-gray pixels in each row; determining the ratio of the number of the low-gray pixels of the line to the sum of the numbers as the low-gray ratio of the line.

In some embodiments of the present application, determining the display data compensation parameter corresponding to each row according to the low gray scale ratio of each row of pixels specifically includes: if the low gray scale ratio of the row is smaller than a preset ratio threshold, correspondingly shortening the sensing interval time of the pixels of the row and prolonging the data writing time of the pixels of the row; if the low gray scale ratio of the row is larger than the preset ratio threshold, correspondingly prolonging the sensing interval time of the pixels of the row and shortening the data writing time of the pixels of the row.

In some embodiments of the present application, the determining, according to the low gray scale fraction and the low gray scale fraction of each row of pixels, a display data compensation parameter corresponding to each row includes: and inquiring a low gray scale ratio-display data compensation parameter relation table according to the low gray scale ratio of the row, and determining the sensing interval time and the data writing time corresponding to the low gray scale ratio.

In some embodiments of the present application, the display data compensation parameter further includes a reference voltage, the low gray scale fraction of each row of pixels, and determining the display data compensation parameter corresponding to each row specifically includes: if the low gray scale ratio of the line is smaller than a preset ratio threshold, maintaining the originally set reference voltage; and if the low gray scale ratio of the line is greater than a preset ratio threshold value, correspondingly reducing the reference voltage.

In some embodiments of the present application, a sum of the sensing interval time and the data writing time is equal to a predetermined time sum threshold.

According to an aspect of an embodiment of the present application, there is provided a display data compensation apparatus including: the pixel scanning module is used for scanning each pixel on the display equipment line by line to obtain the gray value of each pixel; the gray level judging module is used for judging whether each pixel is a low-gray level pixel or not according to a preset gray level threshold value; the proportion determining module is used for determining the proportion of the low gray level of each line according to the number of the low gray level pixels of the line; the parameter determining module is used for determining display data compensation parameters corresponding to each row according to the low gray ratio of each row of pixels, and the display data compensation parameters comprise sensing interval time and data writing time; and the time adjusting module is used for adjusting the sensing interval time and the data writing time of each row of pixels during the display data compensation of the target frame according to the display data compensation parameters corresponding to each row.

In some embodiments of the present application, the predetermined grayscale threshold includes a first predetermined grayscale threshold, and the grayscale determining module specifically includes: the first judgment submodule is used for judging whether the gray level of the pixel is smaller than the first preset gray level threshold value or not, and if the gray level of the pixel is smaller than the first preset gray level threshold value, the pixel is a low-gray level pixel; and the second judgment submodule is used for judging that the pixel is a high-gray pixel if the gray level of the pixel is greater than the first preset gray level threshold value.

In some embodiments of the present application, the predetermined grayscale threshold includes a second predetermined grayscale threshold and a third predetermined grayscale threshold, where the second predetermined grayscale threshold is smaller than the third predetermined grayscale threshold, and the grayscale determining module specifically includes: a low-gray pixel sub-module, configured to determine that the pixel is a low-gray pixel if the gray level of the pixel is less than the second predetermined gray level threshold; and the high-gray pixel submodule is used for determining that the pixel is a high-gray pixel if the gray of the pixel is greater than the third preset gray threshold value.

In some embodiments of the present application, the proportion determining module specifically includes: a sum determination submodule for determining the sum of the number of low-gray pixels and high-gray pixels of each row; and the proportion determining submodule is used for determining the ratio of the number of the low-gray-scale pixels of the line to the sum of the number and is used for determining the low-gray-scale proportion of the line.

In some embodiments of the present application, the parameter determining module specifically includes: a first timing adjustment unit, configured to correspondingly shorten a sensing interval time of the row of pixels and prolong a data writing time of the row of pixels if the low gray scale ratio of the row is smaller than a predetermined ratio threshold; and the second time sequence adjusting unit is used for correspondingly prolonging the sensing interval time of the pixels in the row and shortening the data writing time of the pixels in the row if the low gray scale ratio of the row is greater than a preset ratio threshold value.

In some embodiments of the present application, the parameter determining module specifically includes: and the table query submodule is used for querying a low-gray-scale ratio-display data compensation parameter relation table according to the low-gray-scale ratio of the row and determining the sensing interval time and the data writing time corresponding to the low-gray-scale ratio.

In some embodiments of the present application, the display data compensation parameter further includes a reference voltage, and the parameter determination module specifically includes: a first voltage adjusting unit, configured to maintain the originally set reference voltage if the low gray scale ratio of the row is smaller than a predetermined ratio threshold; and the second voltage adjusting unit is used for correspondingly reducing the reference voltage if the low gray scale ratio of the line is greater than a preset ratio threshold value.

According to an aspect of an embodiment of the present application, there is provided an electronic device including: one or more processors; a storage device for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the display data compensation method as described in the above embodiments.

According to an aspect of embodiments herein, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the display data compensation method provided in the above-described various alternative implementations.

In the technical solutions provided in some embodiments of the present application, each pixel on the display device is scanned line by line to obtain a gray value of each pixel, and then a ratio of low gray pixels in each line of pixels is determined to determine a display data compensation parameter of a subsequent target frame, that is, a sensing interval time and a data writing time. By changing the sensing interval time and the data writing time, the difference between the threshold voltage detection value and the true threshold voltage caused by the difference of mobility under different display brightness is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 shows a schematic diagram of an exemplary system architecture to which the technical solution of the embodiments of the present application can be applied.

FIG. 2 schematically shows a flow diagram of a display data compensation method according to an embodiment of the present application.

Fig. 3 is a flowchart illustrating a specific implementation of step S200 in the method for compensating display data according to a corresponding embodiment in fig. 2.

Fig. 4 is a flowchart illustrating a specific implementation of step S200 in the method for compensating display data according to another corresponding embodiment of fig. 2.

Fig. 5 is a flowchart illustrating a specific implementation of step S300 in the method for compensating display data according to the corresponding embodiment of fig. 2.

Fig. 6 is a flowchart illustrating a specific implementation of step S400 in the method for compensating display data according to a corresponding embodiment in fig. 2.

Fig. 7 is a flowchart illustrating a specific implementation of step S400 in the method for compensating display data according to another corresponding embodiment of fig. 2.

Fig. 8 is a graph illustrating a voltage timing variation in a method of compensating display data according to a corresponding embodiment of the present application.

Fig. 9 schematically shows a block diagram of a display data compensation apparatus according to an embodiment of the present application.

FIG. 10 illustrates a schematic structural diagram of a computer system suitable for use in implementing the electronic device of an embodiment of the present application.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.

The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.

The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

Fig. 1 is a diagram of an implementation environment of a display data compensation method according to an embodiment, as shown in fig. 1, in the implementation environment, a screen assembly 100 and an electronic control assembly 200 are included.

The screen assembly 100 is a module that is installed in any device requiring a display interface and provides the device with the display interface. The screen assembly 100 may be installed in mobile terminals, wearable devices, displays, home appliances, machine tools, robots, and other various devices requiring a display interface. The electronic control component 200 is a module used by a user to control the screen component 100, and may be an electronic control board, a Central Processing Unit (CPU), a System on Chip (SoC), and the like, which can obtain various parameters of the screen component 100 and control the operating state of the screen component 100.

In the using process, the electronic control assembly 200 scans each pixel on the screen assembly 100 line by line to obtain the gray value of each pixel, and determines whether each pixel is a low-gray pixel while scanning. And after the scanning of the pixels of each row is finished, determining the low-gray pixel ratio of the row. And then determining display data compensation parameters corresponding to the row according to the low gray pixel ratio of the row, wherein the display data compensation parameters comprise sensing interval time and data writing time. And finally, adjusting the sensing interval time and the data writing time during the display data compensation of the target frame according to the determined display data compensation parameters corresponding to each row.

It should be noted that, the electronic control assembly 200 and the screen assembly 100 can be connected through a wired or wireless or other communication connection, and the invention is not limited herein.

The implementation details of the technical solution of the embodiment of the present application are set forth in detail below:

fig. 2 illustrates a flow diagram of a display data compensation method according to one embodiment of the present application, which may be performed by the electronic control assembly 200, which electronic control assembly 200 may be the electronic control assembly 200 shown in fig. 1. Referring to fig. 2, the display data compensation method at least includes steps S100 to S500, which are described in detail as follows:

step S100, scanning each pixel on the display device line by line, and acquiring a gray value of each pixel.

Step S200, determining whether each pixel is a low-gray pixel according to a predetermined gray threshold.

Step S300, determining the low gray scale ratio of each line according to the number of the low gray scale pixels of the line.

Step S400, determining display data compensation parameters corresponding to each row according to the low gray ratio of each row of pixels, wherein the display data compensation parameters comprise sensing interval time and data writing time.

Step S500, adjusting the sensing interval time and the data writing time of each row of pixels during the compensation of the display data of the target frame according to the compensation parameters of the display data corresponding to each row.

In the embodiment of the present application, each pixel on the screen assembly 100 of the display device is scanned line by line to obtain a gray value of each pixel; then, the preset gray threshold value is used as a judgment basis to judge whether each pixel is a low-gray pixel or not; then counting the number of low-gray-scale pixels of each line, and determining the proportion of the low-gray-scale pixels of the line, namely the low-gray-scale proportion; determining a display data compensation parameter corresponding to the low gray scale ratio of each row of pixels, if the low gray scale ratio of the row is low, correspondingly shortening the sensing time and prolonging the data writing time, and if the low gray scale ratio of the row is high, correspondingly prolonging the sensing time and shortening the data writing time; and finally, adjusting the sensing interval time and the data writing time of each row of pixels during the display data compensation of the target frame according to the determined display data compensation parameters corresponding to each row.

In step S100, the electronic control assembly 200 collects the gray level of each pixel under each frame through the sensor, and the collection is completed in the frame display stage of the frame.

The specific implementation manner of step S100 may be to collect the gray scale values of the sub-pixels forming each pixel on the screen assembly 100, and then calculate the gray scale value of the pixel point according to the gray scale value of each sub-pixel in one pixel.

In step S200, the gray value of each pixel is compared with a predetermined gray threshold, and whether each pixel is a low-gray pixel is determined, so as to determine the brightness of each row. The implementation of step S200 may be various, and the predetermined grayscale threshold used as the basis for the determination may be plural.

Specifically, in some embodiments, reference may be made to fig. 3 for a specific implementation of step S200. Fig. 3 is a detailed description of step S200 in the display data compensation method according to the corresponding embodiment shown in fig. 2, in which the predetermined grayscale threshold includes a first predetermined grayscale threshold, and step S200 may include the following steps:

in step S210, if the gray level of the pixel is smaller than the first predetermined gray level threshold, the pixel is a low gray level pixel.

In step S220, if the gray level of the pixel is greater than the first predetermined gray level threshold, the pixel is a high gray level pixel.

In this embodiment, the first predetermined grayscale threshold is the only determination criterion for determining the high and low grays, and the first predetermined grayscale threshold may be the middle value 127, or may be a value close to the middle value, such as 125, 130, and the like. When the gray value of the pixel is smaller than the first preset gray threshold value, the pixel is a low-gray pixel, and when the gray value of the pixel is larger than the first preset gray threshold value, the pixel is a high-gray pixel, and only two types of the high-gray pixel and the low-gray pixel exist in each row of pixels. For example, when the first gray level threshold is 127, the pixels with gray levels between 0 and 127 are all low gray level pixels, and the pixels with gray levels between 128 and 255 are all high gray level pixels.

Specifically, in some embodiments, reference may also be made to fig. 4 for a specific implementation of step S200. Fig. 4 is a detailed description of step S200 in the display data compensation method according to the corresponding embodiment of fig. 2, in which the predetermined grayscale threshold includes a second predetermined grayscale threshold and a third predetermined grayscale threshold, and the second predetermined grayscale threshold is smaller than the third predetermined grayscale threshold, and step S200 may include the following steps:

in step S250, if the gray level of the pixel is smaller than the second predetermined gray level threshold, the pixel is a low gray level pixel.

In step S260, if the gray level of the pixel is greater than the third predetermined gray level threshold, the pixel is a high gray level pixel.

In the present embodiment, the predetermined grayscale threshold value as the basis of the determination includes a second predetermined grayscale threshold value for determining whether the pixel is a low-grayscale pixel and a third predetermined grayscale threshold value for determining whether the pixel is a high-grayscale pixel. The second predetermined gray level threshold value is less than the third predetermined gray level threshold value to ensure that a pixel is not both a low gray level pixel and a high gray level pixel.

In the present embodiment, the pixels having the gradation values lower than the second predetermined gradation threshold are low gradation pixels, the pixels having the gradation values higher than the third predetermined gradation threshold are high gradation pixels, and the pixels having the gradation values between the second predetermined gradation threshold and the third predetermined gradation threshold are neither low gradation pixels nor high gradation pixels.

The second predetermined greyscale threshold may take a value slightly lower than the intermediate value, for example 95, 100, 105, etc.; the third predetermined gray level threshold may be a value slightly higher than the middle value, such as 141, 151, 161, etc., and the application is not limited thereto. For example, in one embodiment, the second predetermined grayscale threshold is 95, the third predetermined grayscale threshold is 161, the pixels with grayscale values between 0 and 95 are all low grayscale pixels, the pixels with grayscale values between 161 and 255 are all high grayscale pixels, and the pixels with grayscale values between 95 and 161 are neither low grayscale pixels nor high grayscale pixels.

In this embodiment, step S250 and step S260 may be executed synchronously or asynchronously, and this application is not limited herein.

When step S250 and step S260 are performed simultaneously, each single pixel should compare the gray-level value with both the second predetermined gray-level threshold and the third predetermined gray-level threshold, but since the two steps are performed simultaneously, the time taken for the two steps is less, and the efficiency is higher.

When step S250 and step S260 are performed asynchronously, since it is impossible for one pixel to be both a high gray pixel and a low gray pixel, part of the pixels need only compare the gray values with one of the predetermined gray threshold values, and the remaining part needs to compare the gray values with two predetermined gray threshold values.

The following description will be made by taking the case where step S250 is executed first and then step S260 is executed.

In this embodiment. Comparing the gray value of the pixel with a second preset gray threshold, if the gray value is lower than the second preset gray threshold, judging the pixel as a low-gray pixel, and judging the next pixel continuously after the judgment of the pixel is finished; if the gray scale value is higher than the second predetermined gray scale threshold, the gray scale value of the pixel needs to be compared with the third predetermined gray scale threshold. If the gray scale value is larger than the third preset gray scale threshold value, the pixel is judged to be a high gray scale pixel, the judgment of the pixel is finished, and the next pixel can be continuously judged; if the gray level is less than the third predetermined gray level threshold, the pixel is determined to be neither a low gray level pixel nor a high gray level pixel, and the determination of the pixel is ended, and the next pixel can be continuously determined, or the determination of the pixel is directly ended, and the next pixel is continuously determined.

After determining whether each pixel on the screen assembly 100 is a low gray pixel, the occupancy of each row of low gray pixels can be determined to determine the brightness of each row in step S300.

Specifically, in some embodiments, reference may be made to fig. 5 for a specific implementation of step S300. Fig. 5 is a detailed description of step S300 in the display data compensation method according to the corresponding embodiment shown in fig. 2, wherein step S300 may include the following steps:

in step S310, the sum of the numbers of low-grayscale pixels and high-grayscale pixels per line is determined.

Step S320, determining a ratio of the number of the low-gray pixels in the row to the sum of the numbers, as the low-gray ratio of the row.

In this embodiment, the low gray scale ratio is a ratio of the low gray scale pixels in the row in a set formed by the low gray scale pixels and the high gray scale pixels in the row, and is calculated as a ratio of the number of the low gray scale pixels in the row to the sum of the number of the high gray scale pixels in the low gray scale pixels, and the specific formula is as follows:

wherein, P is the low gray ratio of the line, L is the number of low gray pixels of the line, and H is the number of high gray pixels.

After determining the low gray scale fraction in each row of pixels on the screen assembly 100, in step S400, the display data compensation parameters corresponding to each row can be determined according to the low gray scale fraction of each row of pixels. The compensation parameters may include timing parameters, i.e., time occupied by each stage in performing one sensing process, and voltage parameters, and the timing parameters mainly include sensing interval time and data write time. The voltage parameter may include a reference voltage at the time of sensing.

The execution manner of step S400 is various, and after determining the low gray scale ratio, the principle of determining the corresponding display data compensation parameter is that if the low gray scale ratio of the row is low, it is proved that the overall gray scale of the pixels of the row is high, the brightness is high, and the measured threshold voltage is not higher than the actual threshold voltage corresponding to the short sensing interval time and the long data writing time; if the low gray scale percentage of the row is higher, it is proved that the gray scale of the pixels of the row is lower, the brightness is lower, and the longer sensing interval time and the shorter data writing time are corresponded to, so as to avoid the measured threshold voltage being higher than the actual threshold voltage.

Specifically, in some embodiments, reference may be made to fig. 6 for a specific implementation of step S300. Fig. 6 is a detailed description of step S400 in the display data compensation method according to the corresponding embodiment shown in fig. 2, wherein step S400 may include the following steps:

in step S410, if the low gray scale ratio of the row is smaller than the predetermined ratio threshold, the sensing interval time of the row of pixels is correspondingly shortened, and the data writing time of the row of pixels is prolonged.

In step S420, if the low gray scale ratio of the row is greater than the predetermined ratio threshold, the sensing interval time of the pixels in the row is correspondingly extended, and the data writing time of the pixels in the row is shortened.

In this embodiment, the corresponding compensation parameter of the display data is determined by comparing the low gray scale ratio of the line with a predetermined ratio threshold, and if the low gray scale ratio of the line is smaller than the predetermined ratio threshold, correspondingly shortening the sensing interval time of the line of pixels and prolonging the data writing time of the line of pixels on the basis of the sensing interval time and the data writing time corresponding to the ratio threshold, whereas if the low gray scale ratio of the line is larger than the predetermined ratio threshold, correspondingly lengthening the sensing interval time of the line of pixels and shortening the data writing time of the line of pixels on the basis of the sensing interval time and the data writing time corresponding to the ratio threshold.

Further, the difference value between the line low gray scale ratio and a preset ratio threshold value, namely the ratio difference value, can be calculated, then the adjustment amplitude of the sensing interval time and the data writing time of the pixels in the line is determined according to the ratio difference value, if the low gray scale ratio of the line is smaller than the preset ratio threshold value, the sensing interval time of the pixels in the line is shortened according to the determined adjustment amplitude, and the data writing time of the pixels in the line is prolonged; and if the low gray ratio of the row is larger than a preset ratio threshold, prolonging the sensing interval time of the pixels of the row according to the determined adjustment amplitude, and shortening the data writing time of the pixels of the row.

In some embodiments of the application, the adjustment magnitudes of the sensing interval time and the data writing time for the pixels of the row can be obtained by querying a ratio difference value and adjustment magnitude relation table. In the relation table of the ratio difference and the adjustment amplitude, each ratio difference has a corresponding unique adjustment amplitude, and the larger the ratio difference is, the higher the adjustment amplitude is. In some embodiments, the duty difference may have a positive value and a negative value, and the duty difference is a negative value if the low gray scale ratio of the row is less than the predetermined duty threshold and a positive value if the low gray scale ratio of the row is greater than the predetermined duty threshold.

Specifically, in some embodiments, the specific implementation manner of step S300 may refer to the following embodiments, and in the display data compensation method, step S400 may include the following steps:

and inquiring a low gray scale ratio-display data compensation parameter relation table according to the low gray scale ratio of the row, and determining the sensing interval time and the data writing time corresponding to the low gray scale ratio.

In this embodiment, the sensing interval time and the data writing time corresponding to the row can be determined directly by querying the low gray scale ratio-display data compensation parameter relation table. In the low gray scale ratio-display data compensation parameter relation table, each low gray scale ratio has a corresponding unique display data compensation parameter, and the lower the low gray scale ratio is, the shorter the corresponding sensing interval time is, and the longer the corresponding data writing time is.

Please refer to fig. 7 for the timing adjustment in the embodiment of the present application. In the above embodiment, the reason for changing the sensing interval time and the data writing time at the same time is to control the frame rate change degree, and if only the sensing interval time is changed, the frame rate of the screen assembly 100 is changed all the time. Meanwhile, in the embodiment of the application, the sensing interval time of each row is different, and the data writing time is correspondingly changed, so that the time of each row in the frame idle stage can be kept constant, the rhythms of each row for displaying pictures are kept consistent, and the situation of tearing the pictures is avoided.

In particular, in some embodiments, the sum of the sensing interval time and the data writing time is equal to a predetermined time summation threshold to avoid changing the native frame rate of the screen assembly 100.

In some embodiments of the present application, the display data compensation parameter further includes a reference voltage, and the principle of determining the corresponding reference voltage is that if the low gray scale percentage of the row is low, it is proved that the overall gray scale of the pixels of the row is high, the brightness is high, the originally set reference voltage is maintained, and the measured threshold voltage is not higher than the actual threshold voltage; if the low gray scale percentage of the row is higher, the gray scale of the pixels of the row is lower, the brightness is lower, and the lower reference voltage is correspondingly used to avoid that the measured threshold voltage is higher than the actual threshold voltage.

In particular, in some embodiments, reference may be made to fig. 8 for a specific implementation of step S300. Fig. 8 is a detailed description of step S400 in the display data compensation method according to the corresponding embodiment shown in fig. 2, in which the display data compensation parameter further includes a reference voltage, and step S400 may include the following steps:

step S450, if the low gray scale ratio of the row is smaller than the predetermined ratio threshold, the reference voltage that is originally set is maintained.

In step S460, if the low gray scale ratio of the row is greater than the predetermined ratio threshold, the reference voltage is correspondingly decreased.

In this embodiment, the corresponding reference voltage is determined by comparing the low gray scale ratio of the line with a predetermined ratio threshold, and if the low gray scale ratio of the line is smaller than the predetermined ratio threshold, the reference voltage corresponding to the ratio threshold is kept unchanged, whereas if the low gray scale ratio of the line is larger than the predetermined ratio threshold, the reference voltage is adjusted to be lower based on the reference voltage corresponding to the ratio threshold.

Further, a difference value between the low gray scale ratio of the row and a preset ratio threshold value, namely a ratio difference value, can be calculated, then the voltage adjustment amplitude of the reference voltage of the pixels of the row is determined according to the ratio difference value, and if the low gray scale ratio of the row is smaller than the preset ratio threshold value, the originally set reference voltage is maintained; and if the low gray scale ratio of the line is greater than a preset ratio threshold value, reducing the reference voltage according to the determined voltage adjustment amplitude.

In some embodiments of the application, the adjustment range of the reference voltage for the pixels in the row may be obtained by querying a relation table between the duty difference and the voltage adjustment range. In the relation table of the ratio difference and the voltage adjustment amplitude, each ratio difference has a corresponding unique voltage adjustment amplitude value, and the larger the ratio difference is, the higher the voltage adjustment amplitude value is. In some embodiments, the duty difference may have a positive value and a negative value, if the low gray scale ratio of the row is less than the predetermined duty threshold, the duty difference is a positive value, which corresponds to maintaining the originally set reference voltage, and if the low gray scale ratio of the row is greater than the predetermined duty threshold, the duty difference is a negative value, which corresponds to turning down the reference voltage.

Specifically, in some embodiments, the specific implementation manner of step S300 may refer to the following embodiments, in the display data compensation method, the display data compensation parameter further includes a reference voltage, and step S400 may include the following steps:

and inquiring a low gray scale ratio-display data compensation parameter relation table according to the low gray scale ratio of the row, and determining the reference voltage corresponding to the low gray scale ratio.

In this embodiment, the reference voltage corresponding to the row can be determined directly by querying the low gray scale ratio-display data compensation parameter relation table. In the low gray scale ratio-display data compensation parameter relation table, each low gray scale ratio has a corresponding unique reference voltage, and the higher the low gray scale ratio is, the lower the corresponding reference voltage is.

After determining the display data compensation parameters corresponding to the rows, in step S500, the sensing interval time and the data writing time of the pixels in each row during the display data compensation of the target frame can be adjusted.

In the present embodiment, each frame displayed by the screen assembly 100 includes a detection frame and a target frame, wherein the target frame is a frame or several frames after the detection frame. Steps S100 to S400 are performed in the detection frame, and step S500 is performed in the target frame.

In some embodiments, the target frame is a few frames after the detection frame, and the scheme is suitable for the case that the gray scale change of the picture is not obvious, which is beneficial to reducing the calculation amount and saving more resources.

In other embodiments, the target frame is a frame subsequent to the detection frame, and the scheme is suitable for the case where the gray scale change of the frame is obvious, which is beneficial to improving the accuracy of the compensation effect.

FIG. 9 shows a block diagram of a display data compensation apparatus according to an embodiment of the present application.

Referring to fig. 9, a display data compensating apparatus 900 according to an embodiment of the present application includes: the pixel scanning module 910 is configured to scan each pixel on the display device line by line to obtain a gray value of each pixel; a gray level determining module 920, configured to determine whether each pixel is a low gray level pixel according to a predetermined gray level threshold; a ratio determining module 930, configured to determine a low gray ratio of each line according to the number of low gray pixels of the line; a parameter determining module 940, configured to determine display data compensation parameters corresponding to each row according to the low gray scale ratio of each row of pixels, where the display data compensation parameters include sensing interval time and data writing time; the time adjusting module 950 is configured to adjust the sensing interval time and the data writing time of each row of pixels during the compensation of the display data in the target frame according to the compensation parameter of the display data corresponding to each row.

In some embodiments of the present application, the predetermined grayscale threshold includes a first predetermined grayscale threshold, and the grayscale determining module specifically includes: the first judgment submodule is used for judging that the pixel is a low-gray pixel if the gray level of the pixel is smaller than the first preset gray level threshold value; and the second judgment submodule is used for judging that the pixel is a high-gray pixel if the gray level of the pixel is greater than the first preset gray level threshold value.

In some embodiments of the present application, the proportion determining module specifically includes: a sum determination submodule for determining a sum of numbers of the low-gray pixels and the high-gray pixels per line; and the proportion determining submodule is used for determining the ratio of the number of the low-gray-scale pixels of the line to the sum of the number and is used for determining the low-gray-scale proportion of the line.

It should be noted that the computer system 1500 of the electronic device shown in fig. 10 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.

As shown in fig. 10, the computer system 1500 includes a Central Processing Unit (CPU)1501 which can perform various appropriate actions and processes, such as performing the methods described in the above embodiments, according to a program stored in a Read-Only Memory (ROM) 1502 or a program loaded from a storage portion 1508 into a Random Access Memory (RAM) 1503. In the RAM 1503, various programs and data necessary for system operation are also stored. The CPU 1501, the ROM 1502, and the RAM 1503 are connected to each other by a bus 1504. An Input/Output (I/O) interface 1505 is also connected to bus 1504.

The following components are connected to I/O interface 1505: an input portion 1506 including a keyboard, a mouse, and the like; an output section 1507 including a Display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and a speaker; a storage portion 1508 including a hard disk and the like; and a communication section 1509 including a Network interface card such as a LAN (Local Area Network) card, a modem, or the like. The communication section 1509 performs communication processing via a network such as the internet. A drive 1510 is also connected to the I/O interface 1505 as needed. A removable medium 1511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 1510 as necessary, so that a computer program read out therefrom is mounted into the storage section 1508 as necessary.

In particular, according to embodiments of the application, the processes described above with reference to the flow diagrams may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising a computer program for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 1509, and/or installed from the removable medium 1511. When the computer program is executed by a Central Processing Unit (CPU)1501, various functions defined in the system of the present application are executed.

It should be noted that the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. The computer readable storage medium is not limited to electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having 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), a 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. In the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with a computer program embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units described in the embodiments of the present application may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.

According to an aspect of the application, a computer program product or computer program is provided, comprising computer instructions, the computer instructions being stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method provided in the various alternative implementations described above.

As another aspect, the present application also provides a computer-readable medium, which may be contained in the electronic device described in the above embodiments; or may exist separately without being assembled into the electronic device. The computer readable medium carries one or more programs, which when executed by one of the electronic devices, cause the electronic device to implement the method described in the above embodiments.

It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A method for compensating display data applied to a display device including a plurality of pixels, the method comprising:

scanning each pixel on the display equipment line by line to obtain the gray value of each pixel;

judging whether each pixel is a low-gray pixel or not according to a preset gray threshold;

determining the low gray scale ratio of each line according to the number of the low gray scale pixels of the line;

determining display data compensation parameters corresponding to each row according to the low gray ratio of each row of pixels, wherein the display data compensation parameters comprise sensing interval time and data writing time;

and adjusting the sensing interval time and the data writing time of each row of pixels during the display data compensation of the target frame according to the display data compensation parameters corresponding to each row.

2. The method according to claim 1, wherein the predetermined gray threshold comprises a first predetermined gray threshold, and the determining whether each pixel is a low-gray pixel according to the predetermined gray threshold specifically comprises:

if the gray scale of the pixel is smaller than the first preset gray scale threshold value, the pixel is a low-gray scale pixel;

and if the gray scale of the pixel is greater than the first preset gray scale threshold value, the pixel is a high gray scale pixel.

3. The method according to claim 1, wherein the predetermined gray threshold includes a second predetermined gray threshold and a third predetermined gray threshold, the second predetermined gray threshold is smaller than the third predetermined gray threshold, and the determining whether each pixel is a low-gray pixel according to the predetermined gray threshold specifically includes:

if the gray scale of the pixel is smaller than the second preset gray scale threshold value, the pixel is a low-gray scale pixel;

and if the gray scale of the pixel is greater than the third preset gray scale threshold value, the pixel is a high gray scale pixel.

4. The method for compensating display data according to claim 2 or claim 3, wherein determining the low gray scale fraction of each line according to the number of low gray scale pixels of the line specifically comprises:

determining the sum of the number of low-gray pixels and high-gray pixels in each row;

determining the ratio of the number of the low-gray pixels of the line to the sum of the numbers as the low-gray ratio of the line.

5. The method of claim 1, wherein the determining the compensation parameters for the display data corresponding to each row of the low gray-scale ratio of the pixels of each row specifically comprises:

if the low gray scale ratio of the row is smaller than a preset ratio threshold, correspondingly shortening the sensing interval time of the pixels of the row and prolonging the data writing time of the pixels of the row;

if the low gray scale ratio of the row is larger than the preset ratio threshold, correspondingly prolonging the sensing interval time of the pixels of the row and shortening the data writing time of the pixels of the row.

6. The method of claim 1, wherein the determining the compensation parameters for the display data corresponding to each row of the low gray-scale ratio of the pixels of each row comprises:

7. The method according to claim 1, wherein the display data compensation parameters further include a reference voltage, the low gray scale fraction of the pixels in each row, and the determining the display data compensation parameters corresponding to each row specifically includes:

if the low gray scale ratio of the line is smaller than a preset ratio threshold, maintaining the originally set reference voltage;

and if the low gray scale ratio of the line is greater than a preset ratio threshold value, correspondingly reducing the reference voltage.

8. The method of claim 1, wherein a sum of the sensing interval time and the data writing time is equal to a predetermined time sum threshold.

9. A display data compensation apparatus, comprising:

the pixel scanning module is used for scanning each pixel on the display equipment line by line to obtain the gray value of each pixel;

the gray level judging module is used for judging whether each pixel is a low-gray level pixel or not according to a preset gray level threshold value;

the proportion determining module is used for determining the proportion of the low gray level of each line according to the number of the low gray level pixels of the line;

the parameter determining module is used for determining display data compensation parameters corresponding to each row according to the low gray ratio of each row of pixels, and the display data compensation parameters comprise sensing interval time and data writing time;

and the time adjusting module is used for adjusting the sensing interval time and the data writing time of each row of pixels during the display data compensation of the target frame according to the display data compensation parameters corresponding to each row.

10. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out a method of compensating display data according to any one of claims 1 to 8.

11. An electronic device, comprising:

one or more processors;

storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the display data compensation method of any one of claims 1 to 8.