Backlight control method and system, intelligent terminal and storage medium

Abstract

The invention discloses a backlight control method and system, an intelligent terminal and a storage medium, and relates to the technical field of display control, and the method comprises the steps: obtaining to-be-displayed image data; according to the to-be-displayed image data, respectively determining an area backlight initial value corresponding to each backlight subarea; a whole machine power limit value and regional power limit values corresponding to the backlight partitions are obtained, the backlight partitions are connected with the power supplies in a one-to-one correspondence mode, and the regional power limit values corresponding to the backlight partitions are used for representing limit power of the power supplies connected with the backlight partitions; according to the whole machine power limit value and / or the area power limit value corresponding to each backlight subarea, the backlight initial value of each area is adjusted, and an area backlight target value corresponding to each backlight subarea is obtained; and performing backlight control according to the area backlight target value corresponding to each backlight subarea. Therefore, the requirement for a single power supply can be reduced while the requirement for higher peak brightness can be met, and the flexibility of power supply selection can be improved.

Description

Technical Field

[0001] The present application relates to the field of display control technology, and in particular to a backlight control method, system, intelligent terminal and storage medium. Background Art

[0002] With the development of science and technology, and users' pursuit of display effects, the control requirements for monitors or display screens are becoming higher and higher. For example, the backlight of the display screen needs to be better controlled to achieve better display effects.

[0003] In the related technology, Mini LED display platforms are usually combined with multi-zoned regional backlight dynamic adjustment technology to achieve more sophisticated backlight source control. And the existing Mini LED display platforms are also constantly pursuing higher peak brightness and more backlight zones to maximize the display effect. The problem with the existing technology is that in the backlight control, the display is usually powered by one power supply and completes the related control. To meet the high peak brightness requirements, higher requirements are placed on the average power consumption, instantaneous power consumption, heat dissipation specifications, etc. of the power supply, which is not conducive to improving the flexibility of power supply selection.

[0004] Therefore, relevant technologies still need to be improved and developed. Summary of the invention

[0005] The main purpose of the present application is to provide a backlight control method, system, intelligent terminal and storage medium, aiming to solve the technical problem in the related art that when backlight control is performed, one power supply is used to supply power and complete related controls, which has high requirements on the average power consumption, instantaneous power consumption, heat dissipation specifications, etc. of the power supply, and is not conducive to improving the flexibility of power supply selection.

[0006] In order to achieve the above object, the first aspect of the present application provides a backlight control method, wherein the backlight control method comprises:

[0007] Obtain image data to be displayed;

[0008] Determine the regional backlight initial value corresponding to each backlight partition according to the image data to be displayed;

[0009] Obtaining a whole-machine power limit value and a regional power limit value corresponding to each of the backlight partitions, wherein the plurality of backlight partitions are connected to a plurality of power supplies in a one-to-one correspondence, and the regional power limit value corresponding to the backlight partition is used to characterize the limited power of the power supply connected to the backlight partition;

[0010] According to the whole machine power limit value and / or the regional power limit value corresponding to each of the backlight partitions, the initial backlight value of each of the regional backlights is adjusted respectively to obtain the regional backlight target value corresponding to each of the backlight partitions;

[0011] The backlight control is performed according to the regional backlight target values ​​corresponding to the above-mentioned backlight partitions.

[0012] Optionally, the aforementioned adjusting the initial backlight values ​​of each of the aforementioned regions according to the aforementioned whole-machine power limit value and / or the regional power limit values ​​corresponding to each of the aforementioned backlight regions to obtain the regional backlight target values ​​corresponding to each of the aforementioned backlight regions includes:

[0013] Determine the regional average brightness corresponding to each of the backlight partitions and the full-screen average brightness corresponding to all of the backlight partitions according to the regional backlight initial value;

[0014] According to the regional average brightness corresponding to each of the above-mentioned backlight partitions, the above-mentioned full-screen average brightness, the above-mentioned whole-machine power limit value and the regional power limit value corresponding to each of the above-mentioned backlight partitions, the initial backlight value of each of the above-mentioned regions is adjusted respectively to obtain the regional backlight target value corresponding to each of the above-mentioned backlight partitions.

[0015] Optionally, the initial backlight values ​​of the above-mentioned regions are adjusted respectively according to the regional average brightness corresponding to the above-mentioned backlight partitions, the above-mentioned full-screen average brightness, the above-mentioned whole-machine power limit value and the regional power limit value corresponding to the above-mentioned backlight partitions to obtain the regional backlight target value corresponding to the above-mentioned backlight partitions, including:

[0016] Determining a first power limit parameter according to the regional average brightness corresponding to each of the backlight partitions and the regional power limit value corresponding to each of the backlight partitions;

[0017] Determine a second power limit parameter according to the full-screen average brightness and the whole-machine power limit value;

[0018] According to the first power limiting parameter and the second power limiting parameter, each of the regional backlight initial values ​​is adjusted respectively to obtain a regional backlight target value corresponding to each of the backlight partitions.

[0019] Optionally, the determining of the first power limit parameter according to the regional average brightness corresponding to each of the backlight partitions and the regional power limit value corresponding to each of the backlight partitions includes:

[0020] For each backlight partition, determining the regional limit brightness corresponding to the backlight partition according to the regional power limit value corresponding to the backlight partition;

[0021] The first power limiting parameter corresponding to the backlight partition is determined according to the ratio of the regional average brightness corresponding to the backlight partition to the regional limit brightness corresponding to the backlight partition.

[0022] Optionally, the determining of the second power limit parameter according to the full-screen average brightness and the whole-machine power limit value includes:

[0023] According to the whole machine power limit value, determine the full screen limit brightness associated with the whole machine power limit value;

[0024] The second power limiting parameter is determined according to the ratio of the full-screen average brightness to the full-screen limited brightness.

[0025] Optionally, the adjusting of each of the regional backlight initial values ​​according to the first power limit parameter and the second power limit parameter to obtain the regional backlight target value corresponding to each of the backlight partitions includes:

[0026] According to the values ​​of the first power limit parameter and the second power limit parameter, determining a target power limit parameter from the first power limit parameter and the second power limit parameter;

[0027] The regional backlight target value corresponding to each of the backlight partitions is determined according to each of the regional backlight initial values ​​and the target power limit parameter.

[0028] Optionally, the backlight control is performed according to the regional backlight target value corresponding to each of the backlight partitions, including:

[0029] The regional backlight target value corresponding to each of the above-mentioned backlight partitions is output to the Mini LED backlight board to trigger the above-mentioned Mini LED backlight board to control the backlight brightness corresponding to each of the above-mentioned backlight partitions according to the above-mentioned regional backlight target value.

[0030] A second aspect of the present application provides a backlight control system, wherein the backlight control system comprises:

[0031] A first data acquisition module, used to acquire image data to be displayed;

[0032] A backlight initial value determination module, used to determine the regional backlight initial value corresponding to each backlight partition according to the image data to be displayed;

[0033] A second data acquisition module is used to obtain the power limit value of the whole machine and the regional power limit value corresponding to each of the above-mentioned backlight partitions, wherein the multiple backlight partitions are connected to the multiple power supplies in a one-to-one correspondence, and the regional power limit value corresponding to the backlight partition is used to represent the limited power of the power supply connected to the backlight partition;

[0034] A backlight value adjustment module, used to adjust the initial backlight values ​​of each of the above-mentioned regions according to the above-mentioned whole-machine power limit value and / or the regional power limit value corresponding to each of the above-mentioned backlight partitions, so as to obtain the regional backlight target value corresponding to each of the above-mentioned backlight partitions;

[0035] The backlight control module is used to perform backlight control according to the regional backlight target values ​​corresponding to the above-mentioned backlight partitions.

[0036] The third aspect of the present application provides an intelligent terminal, which includes a memory, a processor, and a backlight control program stored in the memory and executable on the processor. When the backlight control program is executed by the processor, any step of the backlight control method is implemented.

[0037] A fourth aspect of the present application provides a computer-readable storage medium, on which a backlight control program is stored. When the backlight control program is executed by a processor, any one of the steps of the backlight control method is implemented.

[0038] As can be seen from the above, in the present application scheme, image data to be displayed is obtained; the regional backlight initial value corresponding to each backlight partition is determined respectively according to the above image data to be displayed; the whole machine power limit value and the regional power limit value corresponding to each of the above backlight partitions are obtained, wherein a plurality of the above backlight partitions are connected one-to-one with a plurality of power supplies, and the regional power limit value corresponding to the above backlight partition is used to characterize the limited power of the power supply connected to the backlight partition; according to the above whole machine power limit value and / or the regional power limit value corresponding to each of the above backlight partitions, the regional backlight initial value of each of the above backlight partitions is adjusted respectively to obtain the regional backlight target value corresponding to each of the above backlight partitions; and the backlight control is performed according to the regional backlight target value corresponding to each of the above backlight partitions.

[0039] Compared with the prior art, the solution corresponding to the backlight control method provided in the present application is not only based on one power supply for power supply, but a corresponding power supply is set and connected for each backlight partition. And according to the regional power limit value determined based on the limited power of the power supply connected to each backlight partition, and / or the whole machine power limit value, the regional backlight initial value corresponding to each backlight partition is adjusted, so as to obtain the adjusted regional backlight target value and realize backlight control. In this way, a power supply is set for each backlight partition, and the backlight is adjusted and controlled based on multiple power supplies. Compared with the solution of setting a single power supply, it is possible to reduce the requirements for the average power consumption, instantaneous power consumption, heat dissipation specifications, etc. of a single power supply on the basis of meeting higher peak brightness requirements as much as possible, which is conducive to improving the flexibility of power supply selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0041] Figure 1 is a flow chart of a backlight control method provided in an embodiment of the present application;

[0042] Figure 2 It is a schematic diagram of component modules of a backlight control system provided in an embodiment of the present application;

[0043] Figure 3 It is a specific flow chart of a backlight control method provided in an embodiment of the present application;

[0044] Figure 4 This is a schematic diagram of component modules of another backlight control system provided in an embodiment of the present application;

[0045] Figure 5 It is a schematic diagram of a specific process of backlight data adjustment provided in an embodiment of the present application;

[0046] Figure 6 This is a schematic diagram of component modules of another backlight control system provided in an embodiment of the present application;

[0047] Figure 7 It is a block diagram of the internal structure principle of a smart terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0049] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0050] It should also be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0051] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0052] As used in this specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to being classified into," depending on the context. Similarly, the phrase "if it is determined" or "if classified into [described condition or event]" may be interpreted as meaning "upon determination" or "in response to determining" or "upon classification into [described condition or event]" or "in response to being classified into [described condition or event]," depending on the context.

[0053] The following is a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0055] As users pursue better display effects, display platforms are developing rapidly in the direction of wide color gamut, high pixel density, high brightness and high contrast. Liquid crystal displays have always dominated the market due to their advantages of being green, environmentally friendly, long life and high color rendering. Traditional liquid crystal displays (LCDs) cannot display images with a high dynamic range because of their problems such as their backlight source being always on and not adjustable and their display contrast being low. In the current environment with high standards for display effects and the rapid development of new display technologies, it is urgent to solve the problems of low display contrast and low energy efficiency of traditional liquid crystal displays.

[0056] In one application scenario, Mini LED can be used with multi-zoned regional backlight dynamic adjustment technology to effectively solve the problems of traditional LCD displays from a more sophisticated backlight source control perspective. As technical requirements increase, existing Mini LED display platforms are also constantly pursuing higher peak brightness and more backlight zones to maximize display effects. However, higher peak brightness means that more current is required to drive the LED lamp beads, and more backlight zones mean that more LED lamp beads need to be driven, which puts tremendous pressure on the display platform's power supply system and requires higher heat dissipation requirements.

[0057] Traditional Mini LED display platforms are generally powered by a single power supply board, that is, one power supply simultaneously provides power to all devices based on backlight partition lamp beads. This also leads to the number of lamp beads and energy consumption of a single lamp on the Mini LED display platform being limited by the average power consumption, instantaneous power consumption and heat dissipation specifications of the single power supply board. If the specifications of the single power supply board are blindly improved in order to meet the requirements of some ultra-multi-partition high-peak brightness Mini LED display platforms, it will not only be difficult to mass produce, but also greatly increase the technical risks. That is, the above solution has higher requirements on the average power consumption, instantaneous power consumption, heat dissipation specifications, etc. of the power supply, which is not conducive to improving the flexibility of power supply selection.

[0058] Specifically, the increase in the number of backlight beads and peak brightness of the Mini LED display platform powered by a single power board will increase the platform's power supply pressure, increase safety risks, and be detrimental to the mass production of equipment. In order to improve contrast, the Mini LED display platform usually pursues high peak brightness and increases the maximum brightness of a single lamp. The power supply device usually cannot meet the power consumption required for the maximum brightness of the full-screen LED.

[0059] In another application scenario, multiple power supplies can be set up, but in a Mini LED display platform powered by multiple power boards, a single full-screen power limit will cause a single power board to overload and crash due to the concentration of some screen areas.

[0060] In order to solve at least one of the above-mentioned technical problems, in the scheme of the present application, image data to be displayed is obtained; the regional backlight initial value corresponding to each backlight partition is determined respectively according to the above-mentioned image data to be displayed; the whole machine power limit value and the regional power limit value corresponding to each of the above-mentioned backlight partitions are obtained, wherein the multiple backlight partitions are connected to the multiple power supplies in a one-to-one correspondence, and the regional power limit value corresponding to the backlight partition is used to characterize the limited power of the power supply connected to the backlight partition; according to the above-mentioned whole machine power limit value and / or the regional power limit value corresponding to each of the above-mentioned backlight partitions, the regional backlight initial value of each of the above-mentioned backlight partitions is adjusted respectively to obtain the regional backlight target value corresponding to each of the above-mentioned backlight partitions; and the backlight control is performed according to the regional backlight target value corresponding to each of the above-mentioned backlight partitions.

[0061] Compared with the prior art, the scheme corresponding to the backlight control method provided by the present application is not only powered by one power supply, but a corresponding power supply is set and connected for each backlight partition. And according to the regional power limit value determined based on the limited power of the power supply connected to each backlight partition, and / or the power limit value of the whole machine, the regional backlight initial value corresponding to each backlight partition is adjusted, so as to obtain the adjusted regional backlight target value and realize backlight control. In this way, a power supply is set for each backlight partition, and the backlight is adjusted and controlled based on multiple power supplies. Compared with the scheme of setting a single power supply, it can reduce the requirements for the average power consumption, instantaneous power consumption, heat dissipation specifications, etc. of a single power supply on the basis of meeting higher peak brightness requirements as much as possible, which is conducive to improving the flexibility of power selection. And it can improve the flexibility, safety and display effect of backlight control.

[0062] like Figure 1 As shown, the embodiment of the present application provides a backlight control method. Specifically, the method includes the following steps:

[0063] Step S100, obtaining image data to be displayed.

[0064] The image data to be displayed is the image data that needs to be displayed currently. In the embodiment of the present application, the image data to be displayed is displayed based on backlight control. The image data to be displayed can be obtained based on video data received from a source, which is not specifically limited here.

[0065] Step S200 , determining the regional backlight initial value corresponding to each backlight subarea according to the image data to be displayed.

[0066] Specifically, the backlight data corresponding to each backlight partition is calculated based on the above-mentioned image data to be displayed, so as to obtain the regional backlight initial value corresponding to each backlight partition. In the embodiment of the present application, the display platform is a Mini LED display platform as an example for specific description, and the above-mentioned regional backlight initial value is the backlight initial value corresponding to the Mini LED display platform.

[0067] Step S300, obtaining the whole machine power limit value and the regional power limit value corresponding to each of the above-mentioned backlight partitions, wherein the multiple backlight partitions are connected to multiple power supplies in a one-to-one correspondence, and the regional power limit value corresponding to the backlight partition is used to represent the limited power of the power supply connected to the backlight partition.

[0068] It should be noted that the above whole-machine power limit value can be preset and adjusted according to actual needs to limit the maximum power of the entire display system, while the regional power limit value corresponding to each of the above backlight partitions is used to limit the maximum power corresponding to each power supply.

[0069] Specifically, in the embodiment of the present application, a separate power supply is provided for each backlight partition. Therefore, when the same peak brightness is required, compared with the solution of setting a total power supply, the solution of the present application has lower requirements on the average power consumption, instantaneous power consumption, heat dissipation specifications, etc. of the power supply, which can improve the flexibility of power supply selection, and can also improve the flexibility of backlight control and display effects.

[0070] Among them, the regional power limit values ​​corresponding to each backlight partition can be the same or different, and the specifications of the power supply connected to each backlight partition can be the same or different, which are not specifically limited here. The regional power limit value and the whole machine power limit value can be determined according to actual needs. For example, in an application scenario, the regional power limit value is 900 watts and the whole machine power limit value is 1400 watts, but it is not specifically limited.

[0071] Step S400 , adjusting each of the regional backlight initial values ​​according to the overall power limit value and / or the regional power limit values ​​corresponding to each of the backlight partitions, to obtain a regional backlight target value corresponding to each of the backlight partitions.

[0072] In one application scenario, the backlight initial value can be adjusted only according to the power limit value of the whole machine or the regional power limit value corresponding to each of the above backlight partitions, that is, a limit value is used to perform subsequent backlight initial value processing. In the embodiment of the present application, combining the two to adjust the backlight initial value is conducive to improving the adjustment effect, thereby improving the display effect.

[0073] Specifically, the above-mentioned regional backlight initial values ​​are adjusted respectively according to the above-mentioned whole machine power limit value and / or the regional power limit value corresponding to each of the above-mentioned backlight partitions to obtain the regional backlight target value corresponding to each of the above-mentioned backlight partitions, including:

[0074] Determine the regional average brightness corresponding to each of the backlight partitions and the full-screen average brightness corresponding to all of the backlight partitions according to the regional backlight initial value;

[0075] According to the regional average brightness corresponding to each of the above-mentioned backlight partitions, the above-mentioned full-screen average brightness, the above-mentioned whole-machine power limit value and the regional power limit value corresponding to each of the above-mentioned backlight partitions, the initial backlight value of each of the above-mentioned regions is adjusted respectively to obtain the regional backlight target value corresponding to each of the above-mentioned backlight partitions.

[0076] In the embodiment of the present application, the initial backlight values ​​of each of the above-mentioned regions are adjusted respectively according to the regional average brightness corresponding to each of the above-mentioned backlight partitions, the above-mentioned full-screen average brightness, the above-mentioned whole-machine power limit value and the regional power limit value corresponding to each of the above-mentioned backlight partitions to obtain the regional backlight target value corresponding to each of the above-mentioned backlight partitions, including:

[0077] Determining a first power limit parameter according to the regional average brightness corresponding to each of the backlight partitions and the regional power limit value corresponding to each of the backlight partitions;

[0078] Determine a second power limit parameter according to the full-screen average brightness and the whole-machine power limit value;

[0079] According to the first power limiting parameter and the second power limiting parameter, each of the regional backlight initial values ​​is adjusted respectively to obtain a regional backlight target value corresponding to each of the backlight partitions.

[0080] The first power limit parameter and the second power limit parameter are used to limit the regional backlight initial value to achieve power limitation, to prevent the power of a certain area from exceeding the limited power of the corresponding power supply, and to prevent the overall power from exceeding the power limit of the whole machine.

[0081] It should be noted that the first power limit parameter may specifically include the limit parameter corresponding to each backlight partition, or the limit parameter corresponding to each backlight partition with the highest power limit standard may be selected as the first power limit parameter, which is not specifically limited here.

[0082] Furthermore, the determining of the first power limit parameter according to the regional average brightness corresponding to each of the backlight partitions and the regional power limit value corresponding to each of the backlight partitions includes:

[0083] For each backlight partition, determining the regional limit brightness corresponding to the backlight partition according to the regional power limit value corresponding to the backlight partition;

[0084] The first power limiting parameter corresponding to the backlight partition is determined according to the ratio of the regional average brightness corresponding to the backlight partition to the regional limit brightness corresponding to the backlight partition.

[0085] The second power limit parameter is determined according to the full-screen average brightness and the whole-machine power limit value, including:

[0086] According to the whole machine power limit value, determine the full screen limit brightness associated with the whole machine power limit value;

[0087] The second power limiting parameter is determined according to the ratio of the full-screen average brightness to the full-screen limited brightness.

[0088] Specifically, for each backlight partition, according to the regional power limit value corresponding to the backlight partition, the average brightness corresponding to the backlight partition when the power supply is output at the regional power limit value is determined and used as the regional limit brightness. For the whole machine, the corresponding full-screen average brightness when the power supply is output at the whole machine power limit value is used as the full-screen limit brightness.

[0089] In the embodiment of the present application, the ratio of the regional average brightness corresponding to the above-mentioned backlight partition to the regional limit brightness corresponding to the above-mentioned backlight partition is directly used as the first power limiting parameter, and the ratio of the above-mentioned full-screen average brightness to the above-mentioned full-screen limit brightness is used as the second power limiting parameter.

[0090] Furthermore, the aforementioned adjusting the initial backlight values ​​of each of the aforementioned regions according to the aforementioned first power limiting parameter and the aforementioned second power limiting parameter to obtain the regional backlight target values ​​corresponding to each of the aforementioned backlight partitions includes:

[0091] According to the values ​​of the first power limit parameter and the second power limit parameter, determining a target power limit parameter from the first power limit parameter and the second power limit parameter;

[0092] The regional backlight target value corresponding to each of the backlight partitions is determined according to each of the regional backlight initial values ​​and the target power limit parameter.

[0093] Specifically, the one with a higher limit standard (ie, a stricter limit) between the first power limit parameter and the second power limit parameter is used as the target power limit parameter. It should be noted that a larger adjustment range indicates a higher limit characteristic.

[0094] In an application scenario, a maximum value of the first power limit parameter and the second power limit parameter is used as the target power limit parameter.

[0095] In another application scenario, if both the first power limit parameter and the second power limit parameter are less than 1, the target power limit parameter is set to 1. If one of the first power limit parameter and the second power limit parameter has a value greater than 1, the maximum of all parameters with values ​​greater than 1 is used as the target power limit parameter, so as to achieve the highest standard adjustment in the backlight value adjustment process and meet the requirements of all power supply power limits.

[0096] In the embodiment of the present application, for each backlight partition, the ratio of the regional backlight initial value of the backlight partition to the target power limit parameter is used as the regional backlight target value corresponding to the backlight partition.

[0097] It should be noted that only one target power limit parameter is determined in the present application, that is, each backlight partition uses the same target power limit parameter. In this way, the full-screen data uses the same power limit parameter, which can ensure the uniformity of the display effect and thus improve the display effect.

[0098] Step S500 , performing backlight control according to the regional backlight target values ​​corresponding to the backlight partitions.

[0099] Specifically, the backlight control is performed according to the regional backlight target value corresponding to each of the backlight partitions, including:

[0100] The regional backlight target value corresponding to each of the above-mentioned backlight partitions is output to the Mini LED backlight board to trigger the above-mentioned Mini LED backlight board to control the backlight brightness corresponding to each of the above-mentioned backlight partitions according to the above-mentioned regional backlight target value.

[0101] As can be seen from the above, in the backlight control method provided in the embodiment of the present application, image data to be displayed is obtained; the regional backlight initial value corresponding to each backlight partition is determined respectively according to the above image data to be displayed; the whole machine power limit value and the regional power limit value corresponding to each of the above backlight partitions are obtained, wherein a plurality of the above backlight partitions are connected one-to-one with a plurality of power supplies, and the regional power limit value corresponding to the above backlight partition is used to characterize the limited power of the power supply connected to the backlight partition; according to the above whole machine power limit value and / or the regional power limit value corresponding to each of the above backlight partitions, the regional backlight initial value of each of the above backlight partitions is adjusted respectively to obtain the regional backlight target value corresponding to each of the above backlight partitions; and the backlight control is performed according to the regional backlight target value corresponding to each of the above backlight partitions.

[0102] Compared with the prior art, the scheme corresponding to the backlight control method provided by the present application is not only powered by one power supply, but a corresponding power supply is set and connected for each backlight partition. And according to the regional power limit value determined based on the limited power of the power supply connected to each backlight partition, and / or the power limit value of the whole machine, the regional backlight initial value corresponding to each backlight partition is adjusted, so as to obtain the adjusted regional backlight target value and realize backlight control. In this way, a power supply is set for each backlight partition, and the backlight is adjusted and controlled based on multiple power supplies. Compared with the scheme of setting a single power supply, it can reduce the requirements for the average power consumption, instantaneous power consumption, heat dissipation specifications, etc. of a single power supply on the basis of meeting higher peak brightness requirements as much as possible, which is conducive to improving the flexibility of power selection. And it can improve the flexibility, safety and display effect of backlight control.

[0103] In the embodiment of the present application, the backlight control method is described in detail based on a specific application scenario. Specifically, the backlight control method is applied to a backlight control system. Figure 2 is a schematic diagram of component modules of a backlight control system provided in an embodiment of the present application, Figure 3 is a specific flow chart of a backlight control method provided in an embodiment of the present application, such as Figure 2 and Figure 3As shown, in the implementation of the present application, the processor obtains the corresponding image data to be displayed from the signal source, and after processing, transmits the processed data to the light board (i.e., Mini LED light board) based on the serial peripheral interface (SPI) to realize the corresponding control, and in the embodiment of the present application, each backlight partition of the light board is respectively connected to a corresponding power supply (i.e., power board). Specifically, the processor receives the video image signal from the display platform signal source, and after the processor calculates the backlight data and limits the backlight power, the backlight data is sent to the backlight MiniLED light board through SPI, and the driving current of the LED lamp is controlled to adjust its brightness. The light board is independently powered by multiple power supply areas. It should be noted that the light board refers to the backlight light board of the Mini LED display platform, not specifically a single Mini LED light board, and can be a single light board or a plurality of light boards spliced ​​together, which is not specifically limited here. It should be further explained that the above-mentioned processor processing process can also be implemented based on a field programmable gate array (FPGA) or other devices with the same data processing function, which is not specifically limited here.

[0104] Figure 4 is a schematic diagram of the components of another backlight control system provided in an embodiment of the present application, such as Figure 4 As shown, the above system includes an image data input module, a backlight data generation module, a single power board area backlight power limiting module, a whole machine backlight power limiting module, a backlight data processing module, a discrete multi-power supply module and a backlight data output module. It should be noted that in the present application, the backlight data output supports multiple modes such as SPI interface, low voltage differential signal (LVDS, Low-VoltageDifferential Signaling) interface, integrated circuit bus (IIC, Inter-Integrated Circuit), etc. The SPI interface is used as an example for specific description in the embodiment of the present application, but it is not used as a specific limitation. The light board power supply in the present application supports the forms of power adapter, battery, PCB power board, etc. The PCB power board is used as an example for specific description in the present embodiment.

[0105] Specifically, the image data input module mainly includes a video interface module. It is used to receive the video data of the source and integrate it into a processable form; the main function of the backlight data generation module is to generate the initial value of the backlight of the Mini LED display platform. The main function of the single power board area backlight power limit module is to generate the power limit standard of the area according to the design requirements of the single power board and the initial value of the backlight of the power supply area of ​​the power board. The main function of the full-screen backlight power limit module is to generate the power limit standard of the whole machine according to the design requirements of the whole machine and the initial value of the backlight of the whole machine. The backlight data processing module is used to combine the power limit standards of each area with the power limit standards of the whole machine, adjust the initial value of the backlight of the Mini LED display platform as needed, and generate the final backlight data of the Mini LED display platform. The main function of the discrete multi-power supply module is to provide power for the backlight board of the Mini LED display platform. The main function of the backlight data output module is to sort the backlight data according to the MiniLED driving protocol and interface protocol of the light board, and send it to the light board to drive the Mini LED.

[0106] Specifically, after the system receives the image data, the first step is to calculate the backlight data and generate the Mini LED backlight board driving data; the second step is to limit the backlight power. The Mini LED backlight board supplies power to different areas of the board through multiple single power boards, and independent power limits are imposed on the power supply areas of the single power boards. At the same time, the power of the whole machine is limited according to the design of the whole machine; the third step is to combine the results of the regional power limitation with the results of the whole machine power limitation, and process the backlight data as needed while ensuring the display effect, so that it can meet the power consumption design of the whole machine and does not exceed the performance limit of the single power board; the fourth step is to output the final backlight data to the board through the SPI interface to drive the backlight display.

[0107] In this application, the light board is powered by multiple independent power boards. By receiving the backlight data of the main control device, the driving current of each backlight partition Mini LED is adjusted to change the brightness of the backlight Mini LED to achieve regional dimming. In regional dimming, the backlight light board needs to have as many Mini LEDs as possible and achieve as high a peak brightness as possible, so as to finely control the light, increase the contrast, and optimize the display effect; at the same time, due to the existence of regional dimming, when the picture changes from dark to bright, the light board will have a very high instantaneous power consumption change. This places high demands on the performance of the power supply board. Multiple independent power supply boards are used to power the light board, and the power consumption of the entire machine is distributed to each power supply board. A single power supply board only supplies part of the light board, which reduces the performance requirements for the power supply board, improves the safety factor and universality of the power supply board, and facilitates mass production and reuse.

[0108] Specifically, when designing the whole machine, the upper limit of the whole machine power will be designed due to factors such as safety requirements and heat dissipation requirements. At the same time, the power board design also has its performance upper limit. In order to ensure the normal operation of the system, power limitation is required, which must meet both the design requirements of the whole machine and the performance limitations of the power board. Therefore, it is necessary to limit the power of the whole machine and the power supply area of ​​each power board, and then process and output data according to actual needs.

[0109] Figure 5 is a schematic diagram of a specific process of backlight data adjustment provided by an embodiment of the present application, such as Figure 5 As shown, the present application performs power limitation on the power supply areas of a single power board respectively, and then compares it with the power limit of the whole machine, and selects the one with the highest power limit standard for the final global power limit. This can not only ensure that the design requirements of the whole machine and the design requirements of all power boards are met, but also ensure the uniformity of the full-screen display effect, and prevent the Mini LED light board display from being fragmented due to different power limit standards in different areas.

[0110] In a specific application scenario, on a 110-inch, 100,000-level partitioned 8K120HZ Mini LED display platform with a peak brightness of 10,000 nits, in order to achieve high peak brightness, the design power limit of the whole machine is 1400W, and two power supply boards with a power limit of 900W are used to combine and supply power, reducing the requirements for a single power board. Combined with the real-time picture, real-time power pre-monitoring of the single power board and the whole machine is performed. Power pre-monitoring uses the average brightness of the picture as the power standard. The real-time power pre-monitoring of the power board is to calculate the average brightness of its power supply area, and the real-time power pre-monitoring of the whole machine is to calculate the average brightness of the full screen; the ratio of the average brightness calculated by the real-time picture to the average brightness corresponding to the maximum power limit is used as the power limit parameter. To ensure the stable and normal operation of the system, if the display screen has a concentrated brightness area, under the Mini LED regional dimming effect, the power of the whole machine may be concentrated on a single power board, causing it to fail to work properly; if the display screen brightness is uniform, regardless of the upper limit of the whole machine design power, the combined power supply of two power boards can make the whole machine power exceed the design upper limit of 1400W, which may cause heat dissipation, safety and other problems. Therefore, each power board and the whole machine cannot exceed its maximum design power. According to the real-time power pre-monitoring results of each power board, generate their own local power limit parameters (i.e., the first power limit parameters) so that the power of the power board does not exceed the upper limit of 900W; according to the real-time power pre-monitoring results of the whole machine, generate the power limit parameters of the whole machine (i.e., the second power limit parameters) so that the power of the whole machine does not exceed the upper limit of 1400W. Finally, through the processor, select the parameters with the most stringent restriction requirements for full-screen data processing, so that the output backlight data meets both the requirements of the power board and the design requirements of the whole machine, ensuring the stable and normal operation of the system; and because the full-screen data uses the same power limit parameters, the display effect can be unified.

[0111] It can be seen that the embodiment of the present application proposes a Mini-LED multi-power discrete power supply system that supports ultra-high-definition multi-zone backlight LED adaptive display and its corresponding backlight control method, which supplies power to the entire machine backlight board through multiple power boards separately, thereby reducing the power consumption and heat dissipation specifications of a single board while ensuring the display effect.

[0112] In the embodiment of the present application, multiple power supplies are used to power the Mini LED display platform, reducing the performance requirements for a single power supply. And the requirements for instantaneous power consumption are taken into account, where instantaneous power consumption refers to the electrical power consumed by a device or circuit at a certain moment or instant. When considering load changes, instantaneous power consumption is one of the key parameters. Adaptive adjustment can be achieved, supporting power limitation according to the design specifications of the power board and the display screen, and dynamically adjusting the overall display brightness of the powered Mini LED lamp beads. The processor is introduced to perform power limitation on the power supply areas of multiple power supplies of the Mini LED display platform respectively to ensure that each power supply can meet the design requirements and operate normally and stably. The processor is introduced to unify the power limitation standard, combine the power limitation of each area and the power limitation of the whole machine, and generate a standard that can not only ensure the normal operation of the system but also meet the design requirements. As the final full-screen power limitation standard, it ensures the uniformity of the display effect and avoids the phenomenon of fragmentation caused by different power limitation standards between regions.

[0113] In this way, compared with the existing single-power supply strategy, a high-output power and high-performance Mini LED backlight power supply system can be built with an ordinary power supply board, which has higher universality and is convenient for mass production; it also has higher security, avoiding the potential safety hazards caused by excessive output power of the single board. A power limitation strategy is proposed, which limits the power of each single-power supply area and the whole machine through the processor, and then combines the power supply design requirements with the whole machine design requirements to generate a standard for the final full-screen power limit, which can not only ensure the stable and normal operation of the whole machine, but also ensure the uniformity of the display effect, avoiding the regional fragmentation of the backlight Mini LED due to different power limitation standards in different regions.

[0114] like Figure 6 As shown in , corresponding to the above-mentioned backlight control method, the embodiment of the present application further provides a backlight control system, and the above-mentioned backlight control system includes:

[0115] A first data acquisition module 610, used to acquire image data to be displayed;

[0116] A backlight initial value determination module 620, configured to determine the regional backlight initial value corresponding to each backlight subarea according to the image data to be displayed;

[0117] A second data acquisition module 630 is used to acquire a whole-machine power limit value and a regional power limit value corresponding to each of the backlight partitions, wherein the plurality of backlight partitions are connected to a plurality of power supplies in a one-to-one correspondence, and the regional power limit value corresponding to the backlight partition is used to represent the limited power of the power supply connected to the backlight partition;

[0118] The backlight value adjustment module 640 is used to adjust the initial backlight values ​​of each of the above-mentioned regions according to the above-mentioned whole-machine power limit value and / or the regional power limit value corresponding to each of the above-mentioned backlight partitions, so as to obtain the regional backlight target value corresponding to each of the above-mentioned backlight partitions;

[0119] The backlight control module 650 is used to perform backlight control according to the regional backlight target values ​​corresponding to the above-mentioned backlight partitions.

[0120] Thus, in the scheme corresponding to the backlight control method provided by the present application, power is not only supplied based on one power supply, but a corresponding power supply is respectively set and connected for each backlight partition. And according to the regional power limit value determined based on the limited power of the power supply connected to each backlight partition, and / or the whole machine power limit value, the regional backlight initial value corresponding to each backlight partition is adjusted, so as to obtain the adjusted regional backlight target value and realize backlight control. In this way, a power supply is respectively set for each backlight partition, and the backlight is adjusted and controlled based on multiple power supplies. Compared with the scheme of setting a single power supply, it is possible to reduce the requirements for the average power consumption, instantaneous power consumption, heat dissipation specifications, etc. of a single power supply on the basis of meeting higher peak brightness requirements as much as possible, which is conducive to improving the flexibility of power supply selection. And it can improve the flexibility, safety and display effect of backlight control.

[0121] It should be noted that the specific structure and implementation of the above-mentioned backlight control system and its various modules or units can refer to the corresponding description in the above-mentioned method embodiment, and will not be repeated here.

[0122] It should be noted that the division method of the various modules of the above-mentioned backlight control system is not unique and is not specifically limited here.

[0123] Based on the above embodiments, the present application also provides a smart terminal, whose principle block diagram can be as follows: Figure 7 As shown. The above-mentioned intelligent terminal includes a processor, a memory, a network interface and a display screen connected through a system bus. Among them, the processor of the intelligent terminal is used to provide computing and control capabilities. The memory of the intelligent terminal includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a backlight control program. The internal memory provides an environment for the operation of the operating system and the backlight control program in the non-volatile storage medium. The network interface of the intelligent terminal is used to communicate with an external terminal through a network connection. When the backlight control program is executed by the processor, the steps of any one of the above-mentioned backlight control methods are implemented. The display screen of the intelligent terminal can be a liquid crystal display screen or an electronic ink display screen.

[0124] Those skilled in the art will understand that Figure 7The principle block diagram shown in the figure is only a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the smart terminal to which the solution of the present application is applied. The specific smart terminal may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0125] In one embodiment, a smart terminal is provided, which includes a memory, a processor, and a backlight control program stored in the memory and executable on the processor. When the backlight control program is executed by the processor, the steps of any one of the backlight control methods provided in the embodiments of the present application are implemented.

[0126] An embodiment of the present application further provides a computer-readable storage medium, on which a backlight control program is stored. When the backlight control program is executed by a processor, the steps of any one of the backlight control methods provided in the embodiments of the present application are implemented.

[0127] It should be understood that the serial numbers of the steps in the above embodiments do not imply a sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0128] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the above-mentioned device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned device can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0129] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0130] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0131] In the embodiments provided in the present application, it should be understood that the disclosed system / terminal device and method can be implemented in other ways. For example, the system / terminal device embodiments described above are only schematic, for example, the division of the above modules or units is only a logical function division, and in actual implementation, other division methods can be used, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0132] If the above-mentioned integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The above-mentioned computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the above-mentioned computer program includes computer program code, and the above-mentioned computer program code can be in source code form, object code form, executable file or some intermediate form. The above-mentioned computer-readable medium may include: any entity or device capable of carrying the above-mentioned computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, electric signal and software distribution medium. It should be noted that the content contained in the above-mentioned computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction.

[0133] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A backlight control method, characterized in that: The method comprises: Obtain image data to be displayed; Determine the regional backlight initial value corresponding to each backlight partition according to the image data to be displayed; Obtaining a whole-machine power limit value and a regional power limit value corresponding to each of the backlight partitions, wherein a plurality of the backlight partitions are connected to a plurality of power supplies in a one-to-one correspondence, and the regional power limit value corresponding to the backlight partition is used to characterize the limited power of the power supply connected to the backlight partition; According to the whole machine power limit value and / or the regional power limit value corresponding to each backlight partition, respectively adjust the regional backlight initial value to obtain the regional backlight target value corresponding to each backlight partition; Backlight control is performed according to the regional backlight target values ​​corresponding to the backlight partitions.

2. The backlight control method according to claim 1, characterized in that: The adjusting the initial backlight values ​​of the respective regions according to the whole machine power limit value and / or the regional power limit values ​​corresponding to the backlight partitions to obtain the regional backlight target values ​​corresponding to the backlight partitions includes: Determine, according to the regional backlight initial value, the regional average brightness corresponding to each of the backlight partitions, and the full-screen average brightness corresponding to all of the backlight partitions; According to the regional average brightness corresponding to each backlight partition, the full-screen average brightness, the whole machine power limit value and the regional power limit value corresponding to each backlight partition, the initial backlight value of each region is adjusted respectively to obtain the regional backlight target value corresponding to each backlight partition.

3. The backlight control method according to claim 2, characterized in that: The step of adjusting each regional backlight initial value according to the regional average brightness corresponding to each backlight partition, the full-screen average brightness, the whole machine power limit value, and the regional power limit value corresponding to each backlight partition to obtain the regional backlight target value corresponding to each backlight partition includes: Determining a first power limit parameter according to the regional average brightness corresponding to each of the backlight partitions and the regional power limit value corresponding to each of the backlight partitions; Determining a second power limit parameter according to the full-screen average brightness and the whole-machine power limit value; According to the first power limit parameter and the second power limit parameter, each of the regional backlight initial values ​​is adjusted respectively to obtain a regional backlight target value corresponding to each of the backlight partitions.

4. The backlight control method according to claim 3, characterized in that: The determining the first power limit parameter according to the regional average brightness corresponding to each of the backlight partitions and the regional power limit value corresponding to each of the backlight partitions includes: For each backlight partition, determining a regional limit brightness corresponding to the backlight partition according to a regional power limit value corresponding to the backlight partition; A first power limiting parameter corresponding to the backlight partition is determined according to a ratio of an area average brightness corresponding to the backlight partition to an area limit brightness corresponding to the backlight partition.

5. The backlight control method according to claim 3, characterized in that: The determining a second power limit parameter according to the full-screen average brightness and the whole-machine power limit value includes: According to the whole machine power limit value, determining a full screen limit brightness associated with the whole machine power limit value; The second power limiting parameter is determined according to a ratio of the full-screen average brightness to the full-screen limited brightness.

6. The backlight control method according to claim 3, characterized in that: The adjusting the initial backlight values ​​of the respective regions according to the first power limiting parameter and the second power limiting parameter to obtain the regional backlight target values ​​corresponding to the backlight partitions includes: Determine a target power limit parameter from the first power limit parameter and the second power limit parameter according to the values ​​of the first power limit parameter and the second power limit parameter; The regional backlight target value corresponding to each of the backlight partitions is determined according to each of the regional backlight initial values ​​and the target power limit parameter.

7. The backlight control method according to any one of claims 1 to 6, characterized in that: The backlight control is performed according to the regional backlight target value corresponding to each backlight partition, including: The regional backlight target value corresponding to each of the backlight partitions is output to the Mini LED backlight board to trigger the Mini LED backlight board to control the backlight brightness corresponding to each of the backlight partitions according to the regional backlight target value.

8. A backlight control system, characterized in that: The system comprises: A first data acquisition module, used to acquire image data to be displayed; A backlight initial value determination module, used to determine the regional backlight initial value corresponding to each backlight partition according to the image data to be displayed; A second data acquisition module is used to obtain a whole-machine power limit value and a regional power limit value corresponding to each of the backlight partitions, wherein a plurality of the backlight partitions are connected to a plurality of power supplies in a one-to-one correspondence, and the regional power limit value corresponding to the backlight partition is used to characterize the limited power of the power supply connected to the backlight partition; A backlight value adjustment module, used to adjust the initial backlight values ​​of each area according to the whole machine power limit value and / or the area power limit value corresponding to each backlight area, so as to obtain the area backlight target value corresponding to each backlight area; The backlight control module is used to perform backlight control according to the regional backlight target value corresponding to each of the backlight partitions.

9. An intelligent terminal, characterized in that: The intelligent terminal includes a memory, a processor, and a backlight control program stored in the memory and executable on the processor. When the backlight control program is executed by the processor, the steps of the backlight control method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a backlight control program, and when the backlight control program is executed by the processor, the steps of the backlight control method according to any one of claims 1 to 7 are implemented.

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