CN115798394A - Brightness adjustment method, device and storage medium - Google Patents

Abstract

The disclosure relates to a brightness adjustment method, a device and a storage medium, wherein the method comprises the following steps: determining a target brightness level; determining target adjustment information according to the target brightness level, wherein the target adjustment information comprises target backlight brightness information and a target image brightness parameter, and the target image brightness parameter is used for adjusting the image brightness; and adjusting the backlight brightness of the screen and/or the image brightness of the image frame to be displayed according to the target adjustment information so as to adjust the brightness of the screen. By the mode, the final display brightness of the screen can be adjusted by combining the image brightness, so that the limitation of the fineness of backlight brightness adjustment can be broken through, and the fineness of screen brightness adjustment is improved.

Description

Brightness adjustment method, device and storage medium

technical field

The present disclosure relates to the technical field of terminals, and in particular, to a brightness adjustment method, device, and storage medium.

Background technique

Currently, display screens are widely used in various terminal devices, such as mobile phones, wearable devices, tablet devices, and the like. When the terminal device is in a different environment, it is necessary to adjust the brightness of the screen of the terminal device to adapt to the current environment. However, in related technologies, the fineness of adjusting the brightness of the display screen of the terminal device is relatively low, which may reduce user experience.

Contents of the invention

In order to overcome the problems existing in related technologies, the present disclosure provides a brightness adjustment method, device and storage medium.

According to a first aspect of an embodiment of the present disclosure, a brightness adjustment method is provided, including:

Determine the target brightness level;

Determine target adjustment information according to the target brightness level, the target adjustment information includes target backlight brightness information and target image brightness parameters, and the target image brightness parameters are used to adjust image brightness;

Adjust the backlight brightness of the screen and/or the image brightness of the image frame to be displayed according to the target adjustment information, so as to adjust the brightness of the screen.

Optionally, the adjusting the backlight brightness of the screen and the image brightness of the image frame to be displayed according to the target adjustment information to adjust the brightness of the screen includes:

Adjusting the image brightness of the image frame to be displayed through the target image brightness parameter to obtain the target image frame;

Based on the target backlight brightness information, the screen is controlled to display the target image frame, so as to adjust the brightness of the screen.

Optionally, the adjusting the backlight brightness of the screen and the image brightness of the image frame to be displayed according to the target adjustment information to adjust the brightness of the screen includes:

The display driver chip is controlled to perform the following steps to adjust the brightness of the screen:

Adjusting the image brightness of the image frame to be displayed through the target image brightness parameter to obtain the target image frame;

Based on the target backlight brightness information, the screen is controlled to display the target image frame, so as to adjust the brightness of the screen.

Optionally, using the target image brightness parameter, before adjusting the image brightness of the image frame to be displayed, includes:

Writing the brightness parameter of the target image into the first register;

Acquiring a tearing effect signal of the display driver chip;

During the low level period of the tearing effect signal, write the target backlight brightness information into the second register;

controlling the display driver chip to obtain the target image brightness parameter from the first register, and obtain the target backlight brightness information from the second register.

Optionally, using the target image brightness parameter, before adjusting the image brightness of the image frame to be displayed, includes:

Obtain the tearing effect signal of the display driver chip;

During the low level period of the tearing effect signal, write the target backlight brightness information and the target image brightness parameter into a third register;

controlling the display driver chip to obtain the target image brightness parameter and the target backlight brightness information from the third register.

Optionally, the target image brightness parameter includes a target color matrix, the target color matrix is a fourth-order diagonal matrix, and the values of the first three diagonal elements of the fourth-order diagonal matrix are the same. The target image brightness parameter is described, and the image brightness adjustment is performed on the image frame to be displayed to obtain the target image frame, including:

Acquiring the color component matrix of the image frame to be displayed;

The color component matrix is multiplied by the target color matrix, and the target image frame is determined according to the multiplication result.

Optionally, before determining the target adjustment information according to the target brightness level, the method further includes:

Construct the association relationship between brightness level and adjustment information;

The determining target adjustment information according to the target brightness level includes:

According to the target brightness level, the association relationship is queried to obtain the target adjustment information.

According to a second aspect of an embodiment of the present disclosure, there is provided a brightness adjustment device, including:

a first determining module configured to determine a target brightness level;

The second determining module is configured to determine target adjustment information according to the target brightness level, the target adjustment information includes target backlight brightness information and target image brightness parameters, and the target image brightness parameters are used to adjust image brightness;

The adjustment module is configured to adjust the backlight brightness of the screen and/or the image brightness of the image frame to be displayed according to the target adjustment information, so as to adjust the brightness of the screen.

Optionally, the adjustment module includes:

The first adjustment sub-module is configured to adjust the image brightness of the image frame to be displayed through the target image brightness parameter to obtain the target image frame;

The first control submodule is configured to control the screen to display the target image frame based on the target backlight brightness information, so as to adjust the brightness of the screen.

Optionally, the adjustment module includes:

The second control submodule is configured to control the display driver chip to perform the following steps to adjust the brightness of the screen:

Adjusting the image brightness of the image frame to be displayed through the target image brightness parameter to obtain the target image frame;

Based on the target backlight brightness information, the screen is controlled to display the target image frame, so as to adjust the brightness of the screen.

Optionally, the device includes:

The first writing module is configured to write the target image brightness parameter into the first register before adjusting the image brightness of the image frame to be displayed through the target image brightness parameter;

The first acquisition module is configured to acquire the tearing effect signal of the display driver chip before adjusting the image brightness of the image frame to be displayed through the target image brightness parameter;

The second writing module is configured to write the target backlight brightness information during the low level period of the tearing effect signal before adjusting the image brightness of the image frame to be displayed through the target image brightness parameter into the second register;

The first control module is configured to control the display driver chip to obtain the target image brightness parameter from the first register before adjusting the image brightness of the image frame to be displayed by using the target image brightness parameter, and Obtain the target backlight brightness information from the second register.

Optionally, the device includes:

The second acquiring module is configured to acquire the tearing effect signal of the display driver chip before adjusting the image brightness of the image frame to be displayed through the target image brightness parameter;

The third writing module is configured to write the target backlight brightness information and The brightness parameter of the target image is written into the third register;

The second control module is configured to control the display driver chip to obtain the target image brightness parameter and the target image brightness parameter from the third register before adjusting the image brightness of the image frame to be displayed by using the target image brightness parameter. Describe the brightness information of the target backlight.

Optionally, the target image brightness parameter includes a target color matrix, the target color matrix is a fourth-order diagonal matrix, and the values of the first three diagonal elements of the fourth-order diagonal matrix are the same. The target image brightness parameter is described, and the image brightness adjustment is performed on the image frame to be displayed to obtain the target image frame, including:

Acquiring the color component matrix of the image frame to be displayed;

The color component matrix is multiplied by the target color matrix, and the target image frame is determined according to the multiplication result.

Optionally, the device also includes:

An association relationship construction module configured to construct an association relationship between the brightness level and the adjustment information before the second determination module determines the target adjustment information according to the target brightness level;

The second determination module is configured to query the association relationship according to the target brightness level to obtain the target adjustment information.

According to a third aspect of the embodiments of the present disclosure, there is provided a brightness adjustment device, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to execute the steps of any one of the methods in the first aspect above.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium, on which computer program instructions are stored, and when the program instructions are executed by a processor, the steps of any one of the methods described in the above-mentioned first aspect are implemented.

In the above technical solution, when adjusting the display brightness, the target adjustment information can be determined according to the target brightness level. In this way, the backlight brightness of the screen can be adjusted according to the target backlight brightness information in the target adjustment information. And/or, adjust the image brightness of the image frame to be displayed according to the target image brightness parameter in the target adjustment information, and then adjust the brightness of the screen. In this way, the final display brightness of the screen can be adjusted in combination with the brightness of the image, so that the fineness limit of backlight brightness adjustment can be broken through, and the fineness of screen brightness adjustment can be improved.

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 present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a flowchart of a brightness adjustment method shown in an exemplary embodiment of the present disclosure.

Fig. 2 is a flow chart of a brightness adjustment method shown in an exemplary embodiment of the present disclosure.

Fig. 3 is a flow chart of a brightness adjustment method shown in an exemplary embodiment of the present disclosure.

Fig. 4 is a flowchart of a brightness adjustment method shown in an exemplary embodiment of the present disclosure.

Fig. 5 is a block diagram of a brightness adjustment device shown in an exemplary embodiment of the present disclosure.

Fig. 6 is a block diagram of an apparatus 600 for adjusting brightness according to an exemplary embodiment of the present disclosure.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

Before introducing the brightness adjustment method, device, and storage medium of the present disclosure, the application scenarios of the present disclosure are introduced first. The various embodiments provided in the present disclosure can be used in brightness adjustment scenarios, such as screen brightness adjustment scenarios of various terminal devices (mobile phones, monitors, tablet computers, etc.).

In some implementation scenarios, the display brightness of the screen may be adjusted by adjusting the backlight of the screen. For example, for OLED (Organic Light-Emitting Diode, organic light-emitting diode), AMOLED (ActiveMatrix/Organic Light Emitting Diode, active matrix/organic light-emitting diode), LTPO (LowTemperature Polycrystalline Oxide, low-temperature polycrystalline oxide), Micro LED ( Micron light-emitting diodes), MINI LED (submillimeter light-emitting diodes) and other screen types can achieve the effect of controlling the brightness of a single pixel by controlling the circuit current of the screen panel. However, in order to ensure the display consistency of the screen, the control accuracy of the circuit current of the screen panel is limited, so it is difficult to control the brightness of the screen to change with a small granularity.

For example, in a relevant scenario, the intensity of the screen backlight can be divided into 2048 levels, so that the display brightness of the screen also includes 2048 levels. However, human eyes are highly sensitive to brightness changes, so such a brightness adjustment method may still affect user experience. For example, in a low-light environment, the human eye may become more sensitive to changes in brightness. This makes the brightness adjustment of the same granularity appear more dazzling in a low-brightness environment (such as a dark room), which may cause damage to the user's eyes.

To this end, the present disclosure provides a brightness adjustment method, which can be used in various terminal devices, such as mobile phones, tablet computers, monitors, and the like. Fig. 1 is a flowchart of a brightness adjustment method shown in the present disclosure. Referring to Fig. 1, the method includes:

In step S102, a target brightness level is determined.

For example, ambient brightness information may be collected according to one or more sensors, and the target brightness level may be determined according to the ambient brightness information. As an example, an association relationship between ambient brightness values and brightness levels may be established in advance. In this way, the target ambient brightness value can be determined according to the ambient brightness information collected by the sensor, and the target brightness level associated with the target ambient brightness value can be obtained by querying the association relationship. In some examples, multiple ambient brightness value intervals may also be divided, and an association relationship between the ambient brightness value intervals and brightness levels may be established. In this case, the ambient brightness value interval to which the target ambient brightness value belongs may be determined, so that the brightness level associated with the ambient brightness value interval is used as the target brightness level.

In some implementation scenarios, the target brightness level may also refer to a virtual software backlight value (Display Brightness Value, DBV) issued by the Android (Android) system. For the way to obtain the DBV, please refer to the description in the related art, which will not be repeated in this disclosure.

In step S104, target adjustment information is determined according to the target brightness level.

Referring to the flow chart of a brightness adjustment method shown in FIG. 2, in a possible implementation manner, before determining the target adjustment information according to the target brightness level (step S104), the method further includes:

In step S103, a relationship between the brightness level and the adjustment information is constructed;

The determining target adjustment information according to the target brightness level (step S104) includes:

Step S1041, querying the association relationship according to the target brightness level to obtain target adjustment information.

For example, 16384 brightness levels can be pre-marked, and adjustment information can be configured for each brightness level. In this way, the association relationship can be constructed according to each brightness level and the adjustment information associated with the brightness level. The association relationship may be presented, for example, in the form of a table or a related index, which is not limited in the present disclosure.

In the association relationship, the adjustment information includes backlight brightness information and image brightness parameters. The backlight brightness information may include, for example, a current value, that is, the size of the backlight brightness in the screen can be controlled by the magnitude of the current value, and the brightness of the backlight of the screen can be controlled by inputting a current signal with the magnitude of the current value into the screen circuit. The image brightness parameter is used to adjust the brightness value of the image to be displayed on the screen.

In this way, in step S1041, the association relationship may be queried according to the target brightness level, so as to obtain the target adjustment information corresponding to the target brightness level. The target adjustment information includes target backlight brightness information and target image brightness parameters, and the target image brightness parameters are used to adjust image brightness.

Certainly, in some possible implementation manners, after obtaining the target brightness level, the target backlight brightness information and target image brightness parameters may also be obtained by calculation, so as to obtain the target adjustment information, which is not discussed in the present disclosure. Do limit.

In step S106, adjust the backlight brightness of the screen and/or the image brightness of the image frame to be displayed according to the target adjustment information, so as to adjust the brightness of the screen.

It should be noted that although the target adjustment information includes target backlight brightness information and target image brightness parameters, in the actual brightness adjustment process, it may not be necessary to adjust the backlight brightness of the screen or the image brightness of the image frame.

For example, in a possible implementation manner, the brightness of the backlight of the screen may be adjusted according to the target adjustment information, so as to adjust the brightness of the screen.

As an example, in some implementation scenarios, the target adjustment information may include "the brightness of the backlight is 100 nits, and the image brightness of the image frame P is reduced by 2%". Then, in the case that the current screen brightness configuration is "backlight brightness is 101 nits, and the image brightness of image frame P is reduced by 2%", the backlight brightness of the screen can be adjusted to 101 nits without adjusting the image of image frame P brightness. That is to say, the current screen brightness configuration can be obtained. When the target image brightness parameter is consistent with the current image brightness parameter, and the target backlight brightness information is inconsistent with the current backlight brightness information, the brightness of the screen can be adjusted by adjusting the brightness of the backlight of the screen.

In a possible implementation manner, the image brightness of the image frame to be displayed may also be adjusted according to the target adjustment information, so as to adjust the brightness of the screen.

For example, in some implementation scenarios, the target adjustment information may include "the brightness of the backlight is 100 nits, and the image brightness of the image frame P is reduced by 2%". Then, in the case where the current screen brightness configuration is "backlight brightness 100 nits, image brightness of image frame P is reduced by 1%", the image brightness of image frame P can be reduced to 2% without adjusting the screen backlight brightness. That is to say, the current screen brightness configuration can be obtained. When the target backlight brightness information is consistent with the current backlight brightness information, and the target image brightness parameter is inconsistent with the current image brightness parameter, the image brightness of the image frame to be displayed may be adjusted. In this way, by displaying the image frame whose brightness has been adjusted, the brightness of the screen can be adjusted.

In a possible implementation manner, the backlight brightness of the screen and the image brightness of the image frame to be displayed may also be adjusted according to the target adjustment information, so as to adjust the brightness of the screen.

Referring to the flow chart of a brightness adjustment method shown in FIG. 3 , in a possible implementation manner, the backlight brightness of the screen and the image brightness of the image frame to be displayed are adjusted according to the target adjustment information, so as to Adjust the brightness of the screen, including:

In step S1061, the image brightness of the image frame to be displayed is adjusted according to the target image brightness parameter to obtain the target image frame.

In step S1062, based on the target backlight brightness information, the screen is controlled to display the target image frame, so as to adjust the brightness of the screen.

For example, in a possible implementation manner, the target image brightness parameter includes a target color matrix, the target color matrix is a fourth-order diagonal matrix, and the values of the first three diagonal elements of the fourth-order diagonal matrix Same, the described target image brightness parameter is used to adjust the image brightness of the image frame to be displayed to obtain the target image frame (step S1061), including:

Acquiring the color component matrix of the image frame to be displayed;

The color component matrix is multiplied by the target color matrix, and the target image frame is determined according to the multiplication result.

Taking the Android graphics display model as an example, the color matrix can be a 4x4 matrix, and 4 rows and 4 columns respectively represent Red, Green, Blue, and Alpha (transparency). The color component matrix of the image frame may include the color component matrix of each pixel of the image frame. The color component matrix of a pixel can store the RGBA value of the pixel, that is, the Red, Green, Blue and Alpha values of the pixel.

In this way, if the color matrix is a diagonal matrix, and the values of the first three diagonal elements of the diagonal matrix are the same, then the color component matrix of the image frame is processed through the color matrix, and the brightness value change can be obtained. target image frame. For example, when the values of the first three diagonal elements of the diagonal matrix are the same and less than 1, a target image frame with reduced brightness (relative to the image frame to be displayed) can be obtained. When the values of the first three diagonal elements of the diagonal matrix are the same and greater than 1, the target image frame with increased brightness can be obtained.

In addition, the fourth diagonal element of the target color matrix corresponds to the transparency of the image frame. When the transparency does not need to be changed, the fourth diagonal element of the target color matrix can be set to 1, and the obtained target color The matrix M looks like this:

In this way, the image brightness of the image frame to be displayed can be adjusted through the target color matrix to obtain the target image frame, and based on the target backlight brightness information, the screen is controlled to display the target image frame to adjust the brightness of the screen. For example, if the target backlight brightness information includes the target current value, a current signal with the target current value can be input into the screen circuit, thereby adjusting the backlight brightness of the screen, and driving the screen to display the target image frame.

It should be noted that the display brightness of the screen may be obtained by superimposing the brightness of the backlight of the screen and the image brightness of the image frame displayed on the screen. Therefore, the above technical solution can achieve the effect of adjusting the display brightness of the screen by adjusting the brightness value of the image frame to be displayed, and then displaying the target image frame after the image brightness changes. Moreover, under the condition that the brightness of the backlight remains unchanged, multiple adjustment levels of the brightness of the image may also be set, so as to realize the fine adjustment of the brightness of the screen.

For example, in the case of 2048 levels of backlight brightness, 8 groups of target image brightness parameters can be correspondingly set for each level of backlight brightness. That is to say, 8 kinds of processing (such as dimming) can be performed on the brightness of the image, so that the target image frame can present 8 kinds of brightness. In this way, even if the brightness of the backlight is the same, when the target image frames of the eight kinds of brightness are displayed, the whole screen will show different brightness values. In this way, the level of screen brightness can be increased from 2048 levels to 16384 levels.

That is to say, the above technical solution can adjust the final display brightness of the screen in combination with the brightness of the image, so as to break through the fineness limit of backlight brightness adjustment, and further improve the fineness of screen brightness adjustment.

It should be noted that, in some implementation scenarios, when the screen brightness is adjusted based on the target adjustment information, there may also be a flickering or split screen phenomenon, thereby affecting the user's terminal use process.

In this regard, the applicant found that when the effective timing of the backlight command of the target image frame is not synchronized with the display timing of the target image frame, that is, when the refreshment of the screen content and the refreshment of the backlight brightness are not synchronized, a flickering or split-screen phenomenon may occur.

To this end, the present disclosure provides a method for adjusting brightness. Referring to the flowchart of a method for adjusting brightness shown in FIG. 4 , the method includes:

In step S41, a target brightness level is determined.

In step S42, target adjustment information is determined according to the target brightness level, and the target adjustment information includes target backlight brightness information and target image brightness parameters.

In step S43, the brightness parameter of the target image is written into the first register.

In step S44, the tearing effect signal of the display driving chip is acquired.

In step S45, the target backlight brightness information is written into the second register during the low level period of the tearing effect signal.

In step S46, the display driver chip is controlled to acquire target image brightness parameters from the first register, and target backlight brightness information from the second register.

In step S47, the display driver chip is controlled to adjust the image brightness of the image frame to be displayed through the target image brightness parameter to obtain the target image frame.

In step S48, the display driver chip is controlled to control the screen to display the target image frame based on the target backlight brightness information, so as to adjust the brightness of the screen.

The tearing effect signal is a TE (Tearing effect) synchronous signal, which is used for synchronizing the frames displayed on the screen. Since the DDIC (Display Driver Integrated Circuit Chip, display driver chip) has a relatively fixed timing for the command to take effect, the DDIC will not immediately load the configuration information in the register during the high level period of the tearing effect signal. At the falling edge of the tearing effect signal, the DDIC can load the configuration information in the register, and then send the image frame data in the dynamic random access memory to the screen for display.

Therefore, if the tearing effect signal is at a high level, the target backlight brightness information is written into the second register. Then the DDIC can read the second register at the falling edge of the tearing effect signal of the current frame, thus causing the backlight command to take effect in advance, thereby causing the flicker/split screen problem.

Here, the above problem will be described by taking the display of adjacent image frame A and image frame B as an example. Wherein, the adjustment information of image frame A includes backlight brightness A and image brightness parameter A, and the adjustment information of image frame B includes backlight brightness B and image brightness parameter B.

In the display period of the image frame A, the display driver chip can obtain the image brightness parameter in the first register and the backlight brightness information in the second register at the falling edge of the tearing effect signal, and according to the acquired backlight brightness information, The target image frame A in the dynamic random access memory is sent to the screen for display. Here, the target image frame A is obtained by processing the image frame A based on the image brightness parameter A by the display driver chip.

Wherein, if the backlight brightness A is stored in the second register, the display driver chip can drive the screen to display the target image frame A according to the backlight brightness A. Since the target image frame A is obtained by processing the image frame A based on the image brightness parameter A by the display driver chip, the image brightness parameter A and the backlight brightness A take effect synchronously. In this case, image frame A can be displayed normally.

In addition, in order to display the image frame B, it is also necessary to write the adjustment information of the image frame B into the register. Because the display driver chip loads the configuration information in the register at the falling edge of the tearing effect signal. Therefore, in order to display the image frame B normally, it is necessary to adjust the image frame B to the target image frame B in advance and write it into the dynamic random access memory. That is to say, it is necessary to write the adjustment information of the image frame B into the register during the display period of the image frame A.

It is worth noting that if the backlight brightness B is written into the second register during the high level period of the tearing effect signal, then in the display period of the image frame A, the display driver chip can be at the falling edge of the tearing effect signal Load the second register to get backlight brightness B. In this way, the display driver chip can drive the screen to display the target image frame A according to the loaded backlight brightness B. Since the target image frame A is obtained by processing the image frame A based on the image brightness parameter A by the display driver chip, but the backlight brightness B is the backlight brightness of the next frame image (that is, the image frame B), so the image brightness parameter A and the backlight brightness A have no Take effect together. In this case, the screen may flicker or split.

During the display period of an image frame (such as image frame A), the tearing effect signal changes from a high level to a low level after a falling edge. However, if the tearing effect signal is at a low level, the backlight brightness B is written into the second register. At this time, since the display driver chip has loaded the backlight brightness A at the falling edge, the display driver chip can drive the screen to display the target image frame A according to the backlight brightness A, that is, the image frame A can be displayed normally.

In addition, the display driver chip can display according to the backlight brightness information in the second register and the target image frame A (obtained by the display driver chip in advance) in the dynamic random access memory. Therefore, in the display period of image frame A, the image brightness parameter loaded by the display driver chip (loaded at the falling edge of the tearing effect signal) does not act on image frame A, but acts on the next frame of image frame A image (i.e. image frame B). That is to say, the image brightness parameter B can be written into the first register at any moment in the display period of the image frame A.

In this way, after the image frame A is displayed, in the display period of the image frame B, the display driver chip can process the image frame B according to the image brightness parameter B, and write the processed target image frame B into the DRAM stored in memory for display.

In the above technical solution, the target image brightness parameter is written into the first register, and the target backlight brightness information is written into the second register during the low level period of the tearing effect signal. In this way, it can be ensured that the effective timing of the target backlight brightness information and the target image brightness parameter are consistent, thereby avoiding the problem of splash screen/split screen.

Using the above example, since the brightness parameter of the target image is applied to the image to be displayed in the next frame, it does not take effect on the image of the current frame. Therefore, the present disclosure does not limit the timing of writing the brightness parameter of the target image into the register. For example, in some implementation scenarios, the target backlight brightness information and the target image brightness parameters may be written as one command packet, thereby simplifying the number of commands. In this case, before adjusting the image brightness of the image frame to be displayed through the target image brightness parameter, it includes:

Obtain the tearing effect signal of the display driver chip;

During the low level period of the tearing effect signal, write the target backlight brightness information and the target image brightness parameter into a third register;

controlling the display driver chip to obtain the target image brightness parameter and the target backlight brightness information from the third register.

In this manner, it can be ensured that the target backlight brightness information and the target image brightness parameter take effect at the same time, thereby avoiding the splash screen/split screen problem.

It is also worth noting that, for the above method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present disclosure is not limited by the described action sequence. For example, there is no priority between step S43 and step S45. Secondly, those skilled in the art should also know that the embodiments described in the specification are all examples, and the actions and devices involved are not necessarily required by the present invention. For example, the above-mentioned first register, second register and third register may be different devices or the same device, which is not limited in the present disclosure.

Based on the same inventive concept, the present disclosure also provides a brightness adjustment device. Fig. 5 is a block diagram of a brightness adjustment device shown in the present disclosure. Referring to Fig. 5, the brightness adjustment device includes:

The first determination module 501 is configured to determine a target brightness level;

The second determination module 502 is configured to determine target adjustment information according to the target brightness level, the target adjustment information includes target backlight brightness information and target image brightness parameters, and the target image brightness parameters are used to adjust image brightness ;

The adjustment module 503 is configured to adjust the backlight brightness of the screen and/or the image brightness of the image frame to be displayed according to the target adjustment information, so as to adjust the brightness of the screen.

In the above technical solution, when adjusting the display brightness, the target adjustment information can be determined according to the target brightness level. In this way, the backlight brightness of the screen can be adjusted according to the target backlight brightness information in the target adjustment information. And/or, adjust the image brightness of the image frame to be displayed according to the target image brightness parameter in the target adjustment information, and then adjust the brightness of the screen. In this way, the final display brightness of the screen can be adjusted in combination with the brightness of the image, so that the fineness limit of backlight brightness adjustment can be broken through, and the fineness of screen brightness adjustment can be improved.

Optionally, the adjustment module includes:

The first adjustment sub-module is configured to adjust the image brightness of the image frame to be displayed through the target image brightness parameter to obtain the target image frame;

The first control submodule is configured to control the screen to display the target image frame based on the target backlight brightness information, so as to adjust the brightness of the screen.

Optionally, the adjustment module includes:

The second control submodule is configured to control the display driver chip to perform the following steps to adjust the brightness of the screen:

Adjusting the image brightness of the image frame to be displayed through the target image brightness parameter to obtain the target image frame;

Based on the target backlight brightness information, the screen is controlled to display the target image frame, so as to adjust the brightness of the screen.

Optionally, the device includes:

The first writing module is configured to write the target image brightness parameter into the first register before adjusting the image brightness of the image frame to be displayed through the target image brightness parameter;

The first acquisition module is configured to acquire the tearing effect signal of the display driver chip before adjusting the image brightness of the image frame to be displayed through the target image brightness parameter;

The second writing module is configured to write the target backlight brightness information during the low level period of the tearing effect signal before adjusting the image brightness of the image frame to be displayed through the target image brightness parameter into the second register;

The first control module is configured to control the display driver chip to obtain the target image brightness parameter from the first register before adjusting the image brightness of the image frame to be displayed by using the target image brightness parameter, and Obtain the target backlight brightness information from the second register.

Optionally, the device includes:

The second acquiring module is configured to acquire the tearing effect signal of the display driver chip before adjusting the image brightness of the image frame to be displayed through the target image brightness parameter;

The third writing module is configured to write the target backlight brightness information and The brightness parameter of the target image is written into the third register;

The second control module is configured to control the display driver chip to obtain the target image brightness parameter and the target image brightness parameter from the third register before adjusting the image brightness of the image frame to be displayed by using the target image brightness parameter. Describe the brightness information of the target backlight.

Optionally, the target image brightness parameter includes a target color matrix, the target color matrix is a fourth-order diagonal matrix, and the values of the first three diagonal elements of the fourth-order diagonal matrix are the same. The target image brightness parameter is described, and the image brightness adjustment is performed on the image frame to be displayed to obtain the target image frame, including:

Acquiring the color component matrix of the image frame to be displayed;

The color component matrix is multiplied by the target color matrix, and the target image frame is determined according to the multiplication result.

Optionally, the device also includes:

An association relationship construction module configured to construct an association relationship between the brightness level and the adjustment information before the second determination module determines the target adjustment information according to the target brightness level;

The second determination module is configured to query the association relationship according to the target brightness level to obtain the target adjustment information.

Regarding the apparatus in the foregoing embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

The present disclosure also provides a brightness adjustment device, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to execute the steps of the brightness adjustment method provided in the present disclosure.

The present disclosure also provides a computer-readable storage medium on which computer program instructions are stored, and when the program instructions are executed by a processor, the steps of the brightness adjustment method provided in the present disclosure are implemented.

Fig. 6 is a block diagram of a device 600 for adjusting brightness according to an exemplary embodiment. For example, the apparatus 600 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

6, apparatus 600 may include one or more of the following components: processing component 602, memory 604, power supply component 606, multimedia component 608, audio component 610, input/output interface 612, sensor component 614, and communication component 616.

The processing component 602 generally controls the overall operations of the device 600, such as those associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions, so as to complete all or part of the steps of the brightness adjustment method described above. Additionally, processing component 602 may include one or more modules that facilitate interaction between processing component 602 and other components. For example, processing component 602 may include a multimedia module to facilitate interaction between multimedia component 608 and processing component 602 .

The memory 604 is configured to store various types of data to support operations at the device 600 . Examples of such data include instructions for any application or method operating on device 600, contact data, phonebook data, messages, pictures, videos, and the like. The memory 604 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

The power supply component 606 provides power to various components of the device 600 . Power components 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 600 .

The multimedia component 608 includes a screen that provides an output interface between the device 600 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or swipe action, but also detect duration and pressure associated with the touch or swipe action. In some embodiments, the multimedia component 608 includes a front camera and/or a rear camera. When the device 600 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.

The audio component 610 is configured to output and/or input audio signals. For example, the audio component 610 includes a microphone (MIC) configured to receive external audio signals when the device 600 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 604 or sent via communication component 616 . In some embodiments, the audio component 610 also includes a speaker for outputting audio signals.

The input/output interface 612 provides an interface between the processing component 602 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.

Sensor assembly 614 includes one or more sensors for providing status assessments of various aspects of device 600 . For example, the sensor component 614 can detect the open/closed state of the device 600, the relative positioning of components, such as the display and keypad of the device 600, and the sensor component 614 can also detect a change in the position of the device 600 or a component of the device 600 , the presence or absence of user contact with the device 600 , the device 600 orientation or acceleration/deceleration and the temperature change of the device 600 . The sensor assembly 614 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 614 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications. In some embodiments, the sensor component 614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

The communication component 616 is configured to facilitate wired or wireless communication between the apparatus 600 and other devices. The device 600 can access wireless networks based on communication standards, such as WiFi, 4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, apparatus 600 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Realized by a gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is used to execute the brightness adjustment method above.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as the memory 604 including instructions, which can be executed by the processor 620 of the device 600 to implement the above brightness adjustment method. For example, the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

In another exemplary embodiment, there is also provided a computer program product comprising a computer program executable by a programmable device, the computer program having a function for performing the above-mentioned The code section of the brightness adjustment method.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The specification and examples are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A method of adjusting brightness, comprising:

determining a target brightness level;

determining target adjustment information according to the target brightness level, wherein the target adjustment information comprises target backlight brightness information and a target image brightness parameter, and the target image brightness parameter is used for adjusting the image brightness;

and adjusting the backlight brightness of the screen and/or the image brightness of the image frame to be displayed according to the target adjustment information so as to adjust the brightness of the screen.

2. The method according to claim 1, wherein the adjusting backlight brightness of a screen and image brightness of an image frame to be displayed according to the target adjustment information to adjust brightness of the screen comprises:

adjusting the image brightness of the image frame to be displayed according to the target image brightness parameter to obtain a target image frame;

and controlling the screen to display the target image frame based on the target backlight brightness information so as to adjust the brightness of the screen.

3. The method according to claim 1, wherein the adjusting backlight brightness of a screen and image brightness of an image frame to be displayed according to the target adjustment information to adjust brightness of the screen comprises:

controlling a display driving chip to execute the following steps to adjust the brightness of the screen:

adjusting the image brightness of the image frame to be displayed through the target image brightness parameter to obtain a target image frame;

and controlling the screen to display the target image frame based on the target backlight brightness information so as to adjust the brightness of the screen.

4. The method according to claim 3, wherein before adjusting image brightness of the image frame to be displayed by the target image brightness parameter, the method comprises:

writing the target image brightness parameter into a first register;

acquiring a tearing effect signal of the display driving chip;

writing the target backlight brightness information into a second register during a low level of the tearing effect signal;

and controlling the display driving chip to acquire the target image brightness parameter from the first register and acquire the target backlight brightness information from the second register.

5. The method according to claim 3, wherein before adjusting image brightness of the image frame to be displayed by the target image brightness parameter, the method comprises:

acquiring a tearing effect signal of a display driving chip;

writing the target backlight brightness information and the target image brightness parameter into a third register during a low level period of the tearing effect signal;

and controlling the display driving chip to acquire the target image brightness parameter and the target backlight brightness information from the third register.

6. The method according to any one of claims 2 to 5, wherein the target image brightness parameter includes a target color matrix, the target color matrix is a fourth-order diagonal matrix, values of first three diagonal elements of the fourth-order diagonal matrix are the same, and performing image brightness adjustment on an image frame to be displayed through the target image brightness parameter to obtain a target image frame, including:

acquiring a color component matrix of the image frame to be displayed;

and multiplying the color component matrix and the target color matrix, and determining the target image frame according to the multiplication result.

7. The method according to any one of claims 1 to 5, wherein before determining target adjustment information according to the target brightness level, further comprising:

constructing an incidence relation between the brightness level and the adjustment information;

the determining target adjustment information according to the target brightness level includes:

and inquiring the incidence relation according to the target brightness level to obtain the target adjustment information.

8. A luminance adjustment device, comprising:

a first determination module configured to determine a target brightness level;

a second determining module configured to determine target adjustment information according to the target brightness level, where the target adjustment information includes target backlight brightness information and a target image brightness parameter, and the target image brightness parameter is used for adjusting image brightness;

and the adjusting module is configured to adjust the backlight brightness of the screen and/or the image brightness of the image frame to be displayed according to the target adjusting information so as to adjust the brightness of the screen.

9. A luminance adjustment device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the steps of the method of any one of claims 1 to 7.

10. A computer-readable storage medium, on which computer program instructions are stored, which program instructions, when executed by a processor, carry out the steps of the method according to any one of claims 1 to 7.

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