Backlight control methods, systems, smart terminals and storage media

Abstract

This application discloses a backlight control method, system, smart terminal, and storage medium, relating to the field of display control technology. The method includes: acquiring image data to be displayed; determining initial backlight values ​​for each backlight zone based on the image data; acquiring overall power limit values ​​and power limit values ​​for each backlight zone, wherein multiple backlight zones are connected to multiple power supplies in a one-to-one correspondence, and the power limit value for each backlight zone is used to characterize the power limit of the power supply connected to that backlight zone; adjusting the initial backlight values ​​for each zone based on the overall power limit values ​​and / or the power limit values ​​for each backlight zone to obtain target backlight values ​​for each zone; and performing backlight control based on the target backlight values ​​for each zone. This approach can meet higher peak brightness requirements while reducing the demands on individual power supplies, thus improving the flexibility of power supply selection.

Description

Technical Field

[0001] This application relates to the field of display control technology, and in particular to a backlight control method, system, smart terminal and storage medium. Background Technology

[0002] With the development of science and technology and users' pursuit of better display effects, the control requirements for monitors or displays are becoming increasingly stringent. For example, better control of the backlight of the display is needed to achieve better display results.

[0003] In related technologies, Mini LED display platforms are typically used in conjunction with multi-zone dynamic backlight adjustment technology to achieve more precise backlight source control. Furthermore, existing Mini LED display platforms are constantly striving for higher peak brightness and more backlight zones to maximize display performance. The problem with existing technologies is that in backlight control, the display is usually powered and controlled by a single power supply. To meet the requirements of high peak brightness, higher demands are placed on the power supply's average power consumption, instantaneous power consumption, and heat dissipation specifications, which hinders the flexibility of power supply selection.

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

[0005] The main objective of this application is to provide a backlight control method, system, smart terminal, and storage medium, aiming to solve the technical problem that in related technologies, backlight control is based on a single power supply to complete related control, which places high demands on the average power consumption, instantaneous power consumption, and heat dissipation specifications of the power supply, thus hindering the flexibility of power supply selection.

[0006] To achieve the above objectives, a first aspect of this application provides a backlight control method, wherein the backlight control method includes:

[0007] Obtain the image data to be displayed;

[0008] Based on the above image data to be displayed, determine the initial backlight value for each backlight zone;

[0009] Obtain the overall power limit value and the area power limit value corresponding to each of the above-mentioned backlight zones, wherein the multiple backlight zones are connected to multiple power supplies in a one-to-one correspondence, and the area power limit value corresponding to the backlight zone is used to characterize the power limit of the power supply connected to the backlight zone.

[0010] Based on the above-mentioned overall power limit value and / or the regional power limit value corresponding to each of the above-mentioned backlight zones, the initial value of the backlight in each of the above-mentioned regions is adjusted to obtain the target value of the backlight in each of the above-mentioned backlight zones.

[0011] Backlight control is performed based on the target backlight values ​​for each of the aforementioned backlight zones.

[0012] Optionally, the initial backlight value of each of the aforementioned regions is adjusted according to the overall power limit value and / or the regional power limit value corresponding to each of the aforementioned backlight zones to obtain the regional backlight target value corresponding to each of the aforementioned backlight zones, including:

[0013] Based on the initial backlight values ​​of the aforementioned regions, determine the average brightness of each of the aforementioned backlight zones, as well as the average full-screen brightness of all the aforementioned backlight zones.

[0014] Based on the average brightness of the area corresponding to each of the aforementioned backlight zones, the average brightness of the entire screen, the power limit value of the whole device, and the power limit value of the area corresponding to each of the aforementioned backlight zones, the initial backlight value of each of the aforementioned areas is adjusted to obtain the target backlight value of each of the aforementioned backlight zones.

[0015] Optionally, the initial backlight value of each of the aforementioned backlight zones is adjusted based on the average brightness of the area corresponding to each of the aforementioned backlight zones, the average brightness of the entire screen, the overall power limit value, and the power limit value of the area corresponding to each of the aforementioned backlight zones, to obtain the target backlight value of the area corresponding to each of the aforementioned backlight zones, including:

[0016] The first power limit parameter is determined based on the average brightness of the area corresponding to each of the aforementioned backlight zones and the power limit value of the area corresponding to each of the aforementioned backlight zones.

[0017] Based on the above average full-screen brightness and the above overall power limit value, determine the second power limit parameter;

[0018] Based on the first power limiting parameter and the second power limiting parameter, the initial backlight value of each of the above-mentioned regions is adjusted to obtain the target backlight value of each of the above-mentioned backlight partitions.

[0019] Optionally, the first power limiting parameter is determined based on the average brightness of the area corresponding to each of the aforementioned backlight zones and the power limiting value of the area corresponding to each of the aforementioned backlight zones, including:

[0020] For each backlight zone, the corresponding area limit brightness is determined based on the area power limit value of the backlight zone.

[0021] The first power limiting parameter corresponding to the backlight partition is determined based on the ratio of the average brightness of the area corresponding to the backlight partition to the limited brightness of the area corresponding to the backlight partition.

[0022] Optionally, the second power limiting parameter is determined based on the above-mentioned average full-screen brightness and the above-mentioned overall power limit value, including:

[0023] Based on the above overall power limit value, determine the full-screen limit brightness associated with the above overall power limit value;

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

[0025] Optionally, the initial backlight value of each of the aforementioned regions is adjusted according to the first power limiting parameter and the second power limiting parameter to obtain the target backlight value for each of the aforementioned backlight zones, including:

[0026] Based on the values ​​of the first power limiting parameter and the second power limiting parameter, a target power limiting parameter is determined from the first power limiting parameter and the second power limiting parameter.

[0027] Based on the initial backlight value of each of the aforementioned regions and the aforementioned target power limiting parameters, the target backlight value for each of the aforementioned backlight zones is determined.

[0028] Optionally, the backlight control based on the target backlight value corresponding to each of the aforementioned backlight zones includes:

[0029] The target backlight value of each of the aforementioned backlight zones is output to the Mini LED backlight board to trigger the Mini LED backlight board to control the backlight brightness of each of the aforementioned backlight zones according to the target backlight value of each of the aforementioned backlight zones.

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

[0031] The first data acquisition module is used to acquire the image data to be displayed.

[0032] The backlight initial value determination module is used to determine the initial backlight value of each backlight zone based on the above image data to be displayed.

[0033] The second data acquisition module is used to acquire the overall power limit value and the area power limit value corresponding to each of the above-mentioned backlight partitions. The multiple backlight partitions are connected to multiple power supplies in a one-to-one correspondence. The area power limit value corresponding to the backlight partition is used to characterize the power limit of the power supply connected to the backlight partition.

[0034] The backlight value adjustment module is used to adjust the initial value of the backlight of each of the above-mentioned regions according to the above-mentioned overall power limit value and / or the regional power limit value corresponding to each of the above-mentioned backlight zones, so as to obtain the regional backlight target value corresponding to each of the above-mentioned backlight zones.

[0035] The backlight control module is used to control the backlight according to the target backlight value of each of the above-mentioned backlight zones.

[0036] A third aspect of this application provides a smart 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, it implements any of the steps of the backlight control method.

[0037] A fourth aspect of this application provides a computer-readable storage medium storing a backlight control program, which, when executed by a processor, implements any of the steps of the aforementioned backlight control method.

[0038] As can be seen from the above, in this application, the following steps are taken: First, image data to be displayed is acquired. Second, initial backlight values ​​for each backlight zone are determined based on the image data. Third, a power limit value for the entire system and a power limit value for each backlight zone are acquired. Each backlight zone is connected to a corresponding power supply, and the power limit value for each backlight zone represents the power limit of the power supply connected to that backlight zone. Fourth, the initial backlight values ​​for each zone are adjusted based on the power limit value and / or the power limit values ​​for each backlight zone to obtain target backlight values ​​for each backlight zone. Finally, backlight control is performed based on the target backlight values ​​for each backlight zone.

[0039] Compared to existing technologies, the backlight control method provided in this application does not rely solely on a single power supply. Instead, it sets up and connects a corresponding power supply for each backlight zone. Based on the regional power limit value determined by the power limit of the power supply connected to each backlight zone, and / or the overall power limit value, the initial backlight value for each backlight zone is adjusted to obtain the adjusted target backlight value, thus achieving backlight control. In this way, a separate power supply is set up for each backlight zone, and backlight adjustment and control are performed based on multiple power supplies. Compared to the scheme of setting a single power supply, this approach can reduce the requirements for the average power consumption, instantaneous power consumption, and heat dissipation specifications of a single power supply while meeting the requirement for higher peak brightness as much as possible, which is beneficial to improving the flexibility of power supply selection. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic flowchart of a backlight control method provided in an embodiment of this application;

[0042] Figure 2 This is a schematic diagram of the constituent modules of a backlight control system provided in an embodiment of this application;

[0043] Figure 3 This is a schematic flowchart of a backlight control method provided in an embodiment of this application;

[0044] Figure 4 This is a schematic diagram of the constituent modules of another backlight control system provided in the embodiments of this application;

[0045] Figure 5 This is a schematic diagram illustrating a specific process for adjusting backlight data according to an embodiment of this application;

[0046] Figure 6 This is a schematic diagram of the constituent modules of another backlight control system provided in the embodiments of this application;

[0047] Figure 7 This is a block diagram illustrating the internal structure of a smart terminal provided in an embodiment of this application. Detailed Implementation

[0048] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of this application with unnecessary detail.

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

[0050] It should also be understood that the terminology used in this application specification is for the purpose of describing particular embodiments only and is 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 the plural forms unless the context clearly indicates otherwise.

[0051] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

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

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0054] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0055] As users increasingly demand higher display quality, display platforms are rapidly evolving towards wider color gamuts, higher pixel densities, higher brightness, and higher contrast. Liquid crystal displays (LCDs) have maintained a dominant market position due to their environmental friendliness, long lifespan, and high color rendering. Traditional LCDs, however, suffer from issues such as a constantly lit and non-adjustable backlight and low contrast, making them unable to display high dynamic range images. Given the current environment's high standards for display quality and the rapid development of new display technologies, there is an urgent need to address the problems of low contrast and low energy efficiency in traditional LCDs.

[0056] In one application scenario, Mini LED combined with multi-zone local backlight dynamic adjustment technology can effectively solve the problems existing in traditional LCD displays by starting with more precise backlight source control. As technical requirements increase, existing Mini LED display platforms are constantly pursuing higher peak brightness and more backlight zones to maximize display performance. However, higher peak brightness means that driving the LED chips requires more current, and more backlight zones mean driving more LED chips, which puts enormous pressure on the display platform's power supply system and imposes higher heat dissipation requirements.

[0057] Traditional Mini LED display platforms typically use a single power supply board, meaning one power source simultaneously powers all components, primarily the backlight LEDs. This limits the number of LEDs and the energy consumption per LED in a Mini LED display platform to the average power consumption, instantaneous power consumption, and heat dissipation specifications of the single power supply board. Simply increasing the specifications of the single power supply board to meet the requirements of some multi-zone, high-peak-brightness Mini LED display platforms not only hinders mass production but also significantly increases technical risks. In other words, this approach places higher demands on the power supply's average power consumption, instantaneous power consumption, and heat dissipation specifications, limiting the flexibility of power supply selection.

[0058] Specifically, increasing the number of backlight LEDs and peak brightness in a Mini LED display platform powered by a single power board increases the power supply pressure on the platform, raises safety risks, and hinders mass production. To improve contrast, Mini LED display platforms typically pursue high peak brightness and increase the maximum brightness of a single LED, but the power supply device usually cannot meet the power consumption required for the maximum brightness of the entire LED screen.

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

[0060] To address at least one of the aforementioned technical problems, the present application provides the following solution: First, image data to be displayed is acquired. Second, initial backlight values ​​for each backlight zone are determined based on the image data. Third, a power limit value for the entire system and power limit values ​​for each backlight zone are acquired. Each backlight zone is connected to a corresponding power supply, and the power limit value for each backlight zone represents the power limit of the power supply connected to that backlight zone. Fourth, the initial backlight values ​​for each zone are adjusted based on the power limit value and / or the power limit values ​​for each backlight zone to obtain target backlight values ​​for each backlight zone. Fifth, backlight control is performed based on the target backlight values ​​for each backlight zone.

[0061] Compared to existing technologies, the backlight control method provided in this application does not rely solely on a single power supply. Instead, it sets up and connects a corresponding power supply to each backlight zone. Based on the regional power limit value determined by the power limit of each backlight zone's connected power supply, and / or the overall system power limit value, the initial backlight value for each backlight zone is adjusted to obtain the adjusted target backlight value, thus achieving backlight control. In this way, a separate power supply is set up for each backlight zone, and backlight adjustment and control are performed based on multiple power supplies. Compared to the scheme using a single power supply, this approach can reduce the requirements for the average power consumption, instantaneous power consumption, and heat dissipation specifications of a single power supply while maximizing the achievement of higher peak brightness requirements, thereby improving the flexibility of power supply selection. Furthermore, it enhances the flexibility, safety, and display effect of backlight control.

[0062] like Figure 1 As shown in the figure, this application provides a backlight control method, which specifically includes the following steps:

[0063] Step S100: Obtain the image data to be displayed.

[0064] The aforementioned image data to be displayed is the image data that needs to be displayed at present. In this embodiment, the display of the image data to be displayed is achieved based on backlight control. The aforementioned image data to be displayed can be obtained based on video data received from the signal source, and is not specifically limited here.

[0065] Step S200: Determine the initial backlight value of each backlight zone according to the above image data to be displayed.

[0066] Specifically, based on the aforementioned image data to be displayed, backlight data corresponding to each backlight zone is calculated to obtain the initial backlight value for each backlight zone. In this embodiment, a Mini LED display platform is used as an example for specific explanation; the aforementioned initial backlight value is the initial backlight value corresponding to the Mini LED display platform.

[0067] Step S300: Obtain the overall power limit value and the area power limit value corresponding to each of the above-mentioned backlight zones, wherein the multiple backlight zones are connected to multiple power supplies in a one-to-one correspondence, and the area power limit value corresponding to the backlight zone is used to characterize the power limit of the power supply connected to the backlight zone.

[0068] It should be noted that the above-mentioned overall power limit values ​​can be preset and adjusted according to actual needs to limit the maximum power of the entire display system. The power limit values ​​for each of the aforementioned backlight zones are used to limit the maximum power of each power supply.

[0069] Specifically, in this embodiment, a separate power supply is provided for each backlight zone. Thus, under the same peak brightness requirement, compared with the solution of setting a total power supply, the solution of this application has lower requirements for the average power consumption, instantaneous power consumption, heat dissipation specifications, etc. of the power supply, which can improve the flexibility of power supply selection, as well as the flexibility of backlight control and display effect.

[0070] The power limit values ​​for each backlight zone can be the same or different, and the specifications of the power supplies connected to each backlight zone can be the same or different; no specific restrictions are imposed here. The power limit values ​​for each zone and the overall power limit values ​​can be determined according to actual needs. For example, in one application scenario, the power limit value for each zone is 900 watts, and the power limit value for the entire unit is 1400 watts, but this is not a specific limitation.

[0071] Step S400: Based on the above-mentioned overall power limit value and / or the area power limit value corresponding to each of the above-mentioned backlight zones, adjust the initial value of each of the above-mentioned areas of backlight respectively to obtain the area backlight target value corresponding to each of the above-mentioned backlight zones.

[0072] In one application scenario, the initial backlight value can be adjusted based solely on the overall power limit or the regional power limit corresponding to each of the aforementioned backlight zones; that is, a single limit value is used for subsequent backlight initial value processing. In this embodiment, combining both methods to adjust the initial backlight value improves the adjustment effect, thereby enhancing the display performance.

[0073] Specifically, based on the overall power limit value and / or the regional power limit value corresponding to each of the aforementioned backlight zones, the initial backlight value of each of the aforementioned regions is adjusted to obtain the target backlight value for each of the aforementioned backlight zones, including:

[0074] Based on the initial backlight values ​​of the aforementioned regions, determine the average brightness of each of the aforementioned backlight zones, as well as the average full-screen brightness of all the aforementioned backlight zones.

[0075] Based on the average brightness of the area corresponding to each of the aforementioned backlight zones, the average brightness of the entire screen, the power limit value of the whole device, and the power limit value of the area corresponding to each of the aforementioned backlight zones, the initial backlight value of each of the aforementioned areas is adjusted to obtain the target backlight value of each of the aforementioned backlight zones.

[0076] In this embodiment of the application, the adjustment of the initial backlight value of each region based on the average brightness of the region corresponding to each backlight zone, the average brightness of the whole screen, the overall power limit value, and the power limit value of the region corresponding to each backlight zone to obtain the target backlight value of the region corresponding to each backlight zone includes:

[0077] The first power limit parameter is determined based on the average brightness of the area corresponding to each of the aforementioned backlight zones and the power limit value of the area corresponding to each of the aforementioned backlight zones.

[0078] Based on the above average full-screen brightness and the above overall power limit value, determine the second power limit parameter;

[0079] Based on the first power limiting parameter and the second power limiting parameter, the initial backlight value of each of the above-mentioned regions is adjusted to obtain the target backlight value of each of the above-mentioned backlight partitions.

[0080] The first and second power limiting parameters are used to limit the initial value of the regional backlight to achieve power limiting, so as to prevent the power of a certain region from exceeding the power limit of the corresponding power supply, and also to prevent the overall power from exceeding the power limit of the whole machine.

[0081] It should be noted that the first power limiting parameter mentioned above may specifically include the limiting parameter corresponding to each backlight zone, or the highest power limiting standard among the limiting parameters corresponding to each backlight zone may be selected as the first power limiting parameter. No specific limitation is made here.

[0082] Furthermore, the first power limiting parameter is determined based on the average brightness of the area corresponding to each of the aforementioned backlight zones and the power limiting value of the area corresponding to each of the aforementioned backlight zones, including:

[0083] For each backlight zone, the corresponding area limit brightness is determined based on the area power limit value of the backlight zone.

[0084] The first power limiting parameter corresponding to the backlight partition is determined based on the ratio of the average brightness of the area corresponding to the backlight partition to the limited brightness of the area corresponding to the backlight partition.

[0085] Based on the aforementioned average full-screen brightness and the aforementioned overall power limit value, the second power limit parameter is determined, including:

[0086] Based on the above overall power limit value, determine the full-screen limit brightness associated with the above overall power limit value;

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

[0088] Specifically, for each backlight zone, the average brightness of that backlight zone when the power supply outputs at that area power limit value is determined based on the area power limit value corresponding to that backlight zone, and this average brightness is used as the area limit brightness. For the entire device, the average brightness of the entire screen when the power supply outputs at the overall device power limit value is used as the full-screen limit brightness.

[0089] In this embodiment, the ratio of the average brightness of the area corresponding to the backlight partition to the limited brightness of the area corresponding to the backlight partition is directly used as the first power limiting parameter, and the ratio of the average brightness of the whole screen to the limited brightness of the whole screen is used as the second power limiting parameter.

[0090] Furthermore, the initial backlight values ​​for each of the aforementioned regions are adjusted according to the first power limiting parameter and the second power limiting parameter to obtain the target backlight values ​​for each of the aforementioned backlight zones, including:

[0091] Based on the values ​​of the first power limiting parameter and the second power limiting parameter, a target power limiting parameter is determined from the first power limiting parameter and the second power limiting parameter.

[0092] Based on the initial backlight value of each of the aforementioned regions and the aforementioned target power limiting parameters, the target backlight value for each of the aforementioned backlight zones is determined.

[0093] Specifically, the target power limit parameter is the one with the higher limit standard (i.e., the more stringent limit) between the first power limit parameter and the second power limit parameter mentioned above. It should be noted that a larger adjustment range indicates a higher level of limitation.

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

[0095] In another application scenario, if both the first power limit parameter and the second power limit parameter are less than 1, then the target power limit parameter is set to 1. If either the first power limit parameter or the second power limit parameter has a value greater than 1, then the largest of all parameters with a value greater than 1 is used as the aforementioned target power limit parameter, in order to achieve the highest standard of adjustment during the backlight value adjustment process and meet all power supply limit requirements.

[0096] In this embodiment of the application, for each backlight zone, the ratio of the initial backlight value of the backlight zone to the target power limiting parameter is used as the target backlight value of the corresponding backlight zone.

[0097] It should be noted that this application only defines one target power limit parameter, that is, each backlight zone uses the same target power limit parameter. In this way, the use of the same power limit parameter for the whole screen data can ensure the uniformity of the display effect, thereby improving the display effect.

[0098] Step S500: Perform backlight control based on the target backlight value of each of the aforementioned backlight zones.

[0099] Specifically, the backlight control based on the target backlight value corresponding to each of the aforementioned backlight zones includes:

[0100] The target backlight value of each of the aforementioned backlight zones is output to the Mini LED backlight board to trigger the Mini LED backlight board to control the backlight brightness of each of the aforementioned backlight zones according to the target backlight value of each of the aforementioned backlight zones.

[0101] As can be seen from the above, the backlight control method provided in this application involves: acquiring image data to be displayed; determining initial backlight values ​​for each backlight partition based on the image data; acquiring overall power limit values ​​and power limit values ​​for each backlight partition, wherein multiple backlight partitions are connected to multiple power supplies in a one-to-one correspondence, and the power limit values ​​for each backlight partition are used to characterize the power limit of the power supply connected to that backlight partition; adjusting the initial backlight values ​​for each region based on the overall power limit values ​​and / or the power limit values ​​for each backlight partition to obtain target backlight values ​​for each backlight partition; and performing backlight control based on the target backlight values ​​for each backlight partition.

[0102] Compared to existing technologies, the backlight control method provided in this application does not rely solely on a single power supply. Instead, it sets up and connects a corresponding power supply to each backlight zone. Based on the regional power limit value determined by the power limit of each backlight zone's connected power supply, and / or the overall system power limit value, the initial backlight value for each backlight zone is adjusted to obtain the adjusted target backlight value, thus achieving backlight control. In this way, a separate power supply is set up for each backlight zone, and backlight adjustment and control are performed based on multiple power supplies. Compared to the scheme using a single power supply, this approach can reduce the requirements for the average power consumption, instantaneous power consumption, and heat dissipation specifications of a single power supply while maximizing the achievement of higher peak brightness requirements, thereby improving the flexibility of power supply selection. Furthermore, it enhances the flexibility, safety, and display effect of backlight control.

[0103] In this embodiment, the backlight control method is further described in detail based on a specific application scenario. Specifically, the backlight control method is applied to a backlight control system. Figure 2 This is a schematic diagram of the constituent modules of a backlight control system provided in an embodiment of this application. Figure 3 This is a schematic flowchart illustrating a backlight control method provided in an embodiment of this application, as shown below. Figure 2 and Figure 3As shown, in this embodiment, the processor obtains the corresponding image data to be displayed from the signal source, processes it, and then transmits the processed data to the backlight board (i.e., the Mini LED backlight board) via a Serial Peripheral Interface (SPI) to achieve corresponding control. In this embodiment, each backlight zone of the backlight board is connected to a corresponding power supply (i.e., a power board). Specifically, the processor receives video image signals from the display platform signal source, performs backlight data calculation and backlight power limitation, and then sends the backlight data to the backlight Mini LED backlight board via SPI to control the driving current of the LEDs to adjust their brightness. The backlight board is independently powered by multiple power supplies for different areas. It should be noted that the backlight board refers to the backlight board of the Mini LED display platform, not specifically a single Mini LED backlight board; it can be a single board or multiple boards spliced ​​together, without specific limitation. It should be further noted that the above-mentioned processor processing can also be implemented based on a Field Programmable Gate Array (FPGA) or other devices with the same data processing function, without specific limitation.

[0104] Figure 4 This is a schematic diagram of the constituent modules of another backlight control system provided in the embodiments of this application, as shown below. Figure 4 As shown, the 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 this application, backlight data output supports multiple methods such as SPI interface, Low-Voltage Differential Signaling (LVDS) interface, and Inter-Integrated Circuit (IIC) bus. This embodiment uses the SPI interface as an example for specific explanation, but this is not intended as a limitation. The lamp board power supply in this application supports power adapters, batteries, PCB power boards, etc. This embodiment uses a PCB power board as an example for specific explanation.

[0105] Specifically, the image data input module mainly includes a video interface module, used to receive video data from the source and integrate it into a processable format. The backlight data generation module's main function is to generate the initial backlight values ​​for the Mini LED display platform. The single power board area backlight power limiting module's main function is to generate the power limiting standard for that area based on the design requirements of a single power board and the initial backlight values ​​of that power board's power supply area. The full-screen backlight power limiting module's main function is to generate the overall power limiting standard based on the overall design requirements and the overall backlight initial values. The backlight data processing module combines the power limiting standards of each area with the overall power limiting standard, adjusts the initial backlight values ​​of the Mini LED display platform as needed, and generates the final backlight data for the Mini LED display platform. The discrete multi-power supply module's main function is to provide power to the Mini LED display platform backlight board. The backlight data output module's main function is to organize the backlight data according to the lamp board's Mini LED driving protocol and interface protocol, and send it to the lamp board to drive the Mini LEDs.

[0106] Specifically, upon receiving image data, the system first performs backlight data calculation to generate Mini LED backlight board driver data. The second step involves backlight power limiting. The Mini LED backlight board supplies power to different areas of the board via multiple single power supply boards, with independent power limits applied to each area. Simultaneously, overall system power limits are implemented based on the overall system design. The third step combines the results of the area power limits with the overall system power limits, processing the backlight data as needed while ensuring display quality. This ensures the data meets the overall system power consumption design without exceeding the performance limits of a single power supply board. The fourth step outputs the final backlight data to the backlight board driver via the SPI interface.

[0107] In this application, the lamp board is powered by multiple independent power supply boards. By receiving backlight data from the main control device, the driving current of each backlight zone's Mini LED is adjusted to change the brightness of the backlight Mini LED, achieving local dimming. Local dimming requires the backlight lamp board to have as many Mini LEDs as possible and achieve the highest possible peak brightness for precise light control, increased contrast, and optimized display effects. Simultaneously, due to local dimming, the lamp board experiences significant instantaneous power consumption changes when the image transitions from dark to bright. This places high demands on the performance of the power supply boards. By using multiple independent power supply boards to power the lamp board, the overall power consumption is distributed across each board. Each power supply board only supplies power to a portion of the lamp board, reducing the performance requirements of the power supply boards, improving their safety and versatility, and facilitating mass production and reuse.

[0108] Specifically, during the overall system design, due to factors such as safety and heat dissipation requirements, a power limit is set for the entire system, and the power supply board also has its performance limits. To ensure the normal operation of the system, power limitations are necessary, which must meet both the overall system design requirements and the performance limitations of the power supply boards. Therefore, it is necessary to limit the power of the entire system and the power supply areas of each power supply board, and then process and output the data according to actual needs.

[0109] Figure 5 This is a schematic diagram illustrating a specific process for adjusting backlight data according to an embodiment of this application, such as... Figure 5 As shown, this application limits the power supply area of ​​each power board separately, and then compares it with the power limit of the whole machine. The one with the highest power limit standard is selected for the final global power limit. This can ensure that the design requirements of the whole machine and the design requirements of all power boards are met, and also ensure the uniformity of the full-screen display effect. It can also 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 Mini LED display platform with a peak brightness of 10,000 nits and 8K 120Hz resolution with 100,000 zones, the overall power limit is 1400W to achieve the high peak brightness. This is achieved using a combination of two power supply boards with a maximum power limit of 900W each, reducing the requirements on individual power boards. Real-time power pre-monitoring is performed on both the individual power boards and the entire display, based on the real-time video feed. Power pre-monitoring uses the average brightness of the screen as the power standard. Real-time power pre-monitoring of the power boards calculates the average brightness of their respective power supply areas, while real-time power pre-monitoring of the entire display calculates the average brightness of the entire screen. The ratio of the average brightness calculated from the real-time video feed to the average brightness corresponding to the maximum power limit is used as the power limiting parameter. To ensure stable and normal system operation, if the display shows concentrated brightness areas, under Mini LED dimming, the total power may be concentrated on a single power board, causing it to malfunction. Conversely, if the display brightness is uniform, disregarding the overall power design limit, combining two power boards could exceed the design limit of 1400W, potentially leading to overheating and safety issues. Therefore, each power board and the entire system must not exceed its maximum design power. Based on real-time power pre-monitoring results for each power board, local power limit parameters (i.e., the first power limit parameter) are generated to ensure that the power of each power board does not exceed the upper limit of 900W. Based on real-time power pre-monitoring results for the entire system, overall power limit parameters (i.e., the second power limit parameter) are generated to ensure that the overall power does not exceed the upper limit of 1400W. Finally, the processor selects the parameter with the most stringent limiting requirements for full-screen data processing, ensuring that the output backlight data meets both the power board requirements and the overall system design requirements, guaranteeing stable and normal system operation. Furthermore, because the same power limit parameter is used for all-screen data, consistent display effects are ensured.

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

[0112] In this embodiment, multiple power supplies are used to power the Mini LED display platform, reducing the performance requirements of individual power supplies. Instantaneous power consumption is also considered, referring to the electrical power consumed by the device or circuit at a specific moment. Instantaneous power consumption is a key parameter when considering load changes. Adaptive adjustment is possible, supporting power limiting based on power board design specifications and the display screen, dynamically adjusting the overall display brightness of the powered Mini LED beads. A processor is introduced to limit the power supply areas of the multiple power supplies on the Mini LED display platform separately, ensuring that each power supply meets design requirements and operates normally and stably. A unified power limiting standard is introduced, combining the power limits of each area and the overall system power limit to generate a standard that ensures both normal system operation and meets design requirements. This standard serves as the final full-screen power limiting standard, ensuring uniform display effects and avoiding fragmentation caused by different power limiting standards between areas.

[0113] Therefore, compared with the existing single-power supply strategy, a high-output-power, high-performance Mini LED backlight power supply system can be built using ordinary power supply boards, which has greater versatility and is easier to mass-produce; it also has higher safety, avoiding the safety hazards caused by excessive output power of a single board. A power limiting strategy is proposed, which limits the power of each single-power supply area and the entire device separately through the processor. Combined with power supply design requirements and overall device design requirements, a standard is generated as the final full-screen power limit. This ensures stable and normal operation of the entire device and guarantees a uniform display effect, avoiding regional fragmentation of the backlight Mini LED caused by different power limiting standards in different areas.

[0114] like Figure 6 As shown in the figure, corresponding to the above-described backlight control method, this application embodiment also provides a backlight control system, which includes:

[0115] The first data acquisition module 610 is used to acquire image data to be displayed;

[0116] The backlight initial value determination module 620 is used to determine the area backlight initial value corresponding to each backlight zone based on the above image data to be displayed.

[0117] The second data acquisition module 630 is used to acquire the overall power limit value and the area 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 area power limit value corresponding to the backlight partition is used to characterize the power limit of the power supply connected to the backlight partition.

[0118] The backlight value adjustment module 640 is used to adjust the initial value of the backlight of each of the above-mentioned regions according to the above-mentioned overall power limit value and / or the regional power limit value corresponding to each of the above-mentioned backlight zones, so as to obtain the regional backlight target value corresponding to each of the above-mentioned backlight zones.

[0119] The backlight control module 650 is used to control the backlight according to the target backlight value of each of the aforementioned backlight zones.

[0120] Therefore, the backlight control method provided in this application does not rely solely on a single power supply; instead, each backlight zone is equipped with and connected to a corresponding power supply. Based on the regional power limit value determined by the power limit of the power supply connected to each backlight zone, and / or the overall power limit value, the initial backlight value for each backlight zone is adjusted to obtain the adjusted target backlight value, thus achieving backlight control. In this way, a separate power supply is provided for each backlight zone, and backlight adjustment and control are performed based on multiple power supplies. Compared to a single power supply solution, this approach reduces the requirements for average power consumption, instantaneous power consumption, and heat dissipation specifications of a single power supply while maximizing peak brightness requirements, thus improving the flexibility of power supply selection. Furthermore, it enhances 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 be referred to the corresponding descriptions in the above method embodiments, and will not be repeated here.

[0122] It should be noted that the division of the various modules in the aforementioned backlight control system is not unique and is not intended as a specific limitation.

[0123] Based on the above embodiments, this application also provides a smart terminal, the principle block diagram of which can be as follows: Figure 7 As shown. The aforementioned smart terminal includes a processor, memory, network interface, and display screen connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and backlight control program. The internal memory provides an environment for the operation of the operating system and backlight control program stored in the non-volatile storage medium. The network interface is used to communicate with external terminals via a network connection. When executed by the processor, the backlight control program implements the steps of any of the aforementioned backlight control methods. The display screen of the smart terminal can be a liquid crystal display (LCD) or an electronic ink display.

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

[0125] In one embodiment, a smart terminal is provided, the smart terminal including a memory, a processor, and a backlight control program stored in the memory and executable on the processor, wherein the backlight control program, when executed by the processor, implements the steps of any backlight control method provided in the embodiments of this application.

[0126] This application also provides a computer-readable storage medium storing a backlight control program, which, when executed by a processor, implements the steps of any of the backlight control methods provided in this application.

[0127] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order 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 this application.

[0128] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the above 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 embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above device can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0129] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0130] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0131] In the embodiments provided in this application, it should be understood that the disclosed systems / terminal devices and methods can be implemented in other ways. For example, the system / terminal device embodiments described above are merely illustrative. For instance, the division of modules or units described above is merely a logical functional division, and in actual implementation, it can be divided in other ways. 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 integrated modules / units described above are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, electrical signals, and software distribution media, etc. It should be noted that the content included in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction.

[0133] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions are not in essence a departure from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A backlight control method, characterized in that, The method includes: Obtain the image data to be displayed; Determine the initial backlight value for each backlight zone based on the image data to be displayed. Obtain the overall power limit value and the area power limit value corresponding to each of the backlight zones, wherein the multiple backlight zones are connected to multiple power supplies in a one-to-one correspondence, and the area power limit value corresponding to the backlight zone is used to characterize the power limit of the power supply connected to the backlight zone; Based on the initial backlight value of the region, determine the average brightness of the region corresponding to each backlight zone, and the average brightness of the whole screen corresponding to all the backlight zones; based on the average brightness of the region corresponding to each backlight zone, the average brightness of the whole screen, the power limit value of the whole device, and the power limit value of the region corresponding to each backlight zone, adjust the initial backlight value of each region respectively to obtain the target backlight value of each region corresponding to each backlight zone. Backlight control is performed based on the target backlight value of each backlight zone.

2. The backlight control method according to claim 1, characterized in that, The step of adjusting the initial backlight value of each region based on the average brightness of the region corresponding to each backlight zone, the average brightness of the whole screen, the power limit value of the whole device, and the power limit value of the region corresponding to each backlight zone to obtain the target backlight value of the region corresponding to each backlight zone includes: The first power limit parameter is determined based on the average brightness of the area corresponding to each backlight zone and the power limit value of the area corresponding to each backlight zone; The second power limit parameter is determined based on the average brightness of the full screen and the overall power limit value. Based on the first power limiting parameter and the second power limiting parameter, the initial value of the backlight in each region is adjusted to obtain the target value of the backlight in each region corresponding to the backlight partition.

3. The backlight control method according to claim 2, characterized in that, The step of determining the first power limit parameter based on the average brightness of the area corresponding to each of the backlight zones and the power limit value of the area corresponding to each of the backlight zones includes: For each backlight zone, the area limit brightness corresponding to the backlight zone is determined based on the area power limit value corresponding to the backlight zone. The first power limiting parameter corresponding to the backlight partition is determined based on the ratio of the average brightness of the area corresponding to the backlight partition to the limited brightness of the area corresponding to the backlight partition.

4. The backlight control method according to claim 2, characterized in that, The step of determining the second power limit parameter based on the average full-screen brightness and the overall power limit value includes: Based on the overall power limit value, determine the full-screen limit brightness associated with the overall power limit value; The second power limiting parameter is determined based on the ratio of the average full-screen brightness to the full-screen limited brightness.

5. The backlight control method according to claim 2, characterized in that, The step of adjusting the initial backlight value of each region according to the first power limiting parameter and the second power limiting parameter to obtain the target backlight value of each backlight partition includes: Based on the values ​​of the first power limiting parameter and the second power limiting parameter, a target power limiting parameter is determined from the first power limiting parameter and the second power limiting parameter; The target backlight value for each backlight partition is determined based on the initial backlight value of each region and the target power limiting parameter.

6. The backlight control method according to any one of claims 1 to 5, characterized in that, The backlight control based on the target backlight value of each backlight zone includes: The target backlight value of each backlight zone is output to the Mini LED backlight board to trigger the Mini LED backlight board to control the backlight brightness of each backlight zone according to the target backlight value of each zone.

7. A backlight control system, characterized in that, The system includes: The first data acquisition module is used to acquire the image data to be displayed. The backlight initial value determination module is used to determine the initial backlight value of each backlight zone according to the image data to be displayed. The second data acquisition module is used to acquire the overall power limit value and the area power limit value corresponding to each of the backlight partitions, wherein the multiple backlight partitions are connected to multiple power supplies in a one-to-one correspondence, and the area power limit value corresponding to the backlight partition is used to characterize the power limit of the power supply connected to the backlight partition. The backlight value adjustment module is used to determine the average brightness of each backlight partition and the average brightness of the entire screen corresponding to all backlight partitions based on the initial backlight value of the region; and to adjust the initial backlight value of each region based on the average brightness of each backlight partition, the average brightness of the entire screen, the power limit value of the whole machine, and the power limit value of each backlight partition to obtain the target backlight value of each backlight partition. The backlight control module is used to control the backlight according to the target backlight value of each backlight partition.

8. A smart terminal, characterized in that, The smart 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, it implements the steps of the backlight control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a backlight control program, which, when executed by a processor, implements the steps of the backlight control method as described in any one of claims 1 to 6.

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