Brightness adjusting method and system of display screen

Abstract

The invention provides a display screen brightness adjusting method and system, and belongs to the technical field of display screens. By monitoring the brightness parameter of the display screen, when the brightness parameter of the display screen is monitored to be smaller than or equal to the first preset brightness parameter threshold value, the brightness attenuation of the display screen is monitored to be lower than 50% of the brightness during shipment; the display brightness of the display screen is improved by adjusting the direct-current voltage output by the power supply module and / or adjusting the brightness related parameters (adjusting the luminous efficiency of the display screen) of the driving chip, such as increasing the direct-current voltage output by the power supply module and the luminous efficiency. Therefore, when the brightness attenuation of the display screen is lower than 50% of the brightness during shipment, the display brightness can be improved by increasing the direct-current voltage output by the power supply module and the luminous efficiency, so that the service life of the display screen can be effectively prolonged.

Description

Technical Field

[0001] This application relates to the field of display screen technology, and in particular to a method and system for adjusting the brightness of a display screen. Background Technology

[0002] With the widespread application of LED displays, customers are demanding longer lifespans for them. During use, due to the cumulative lighting time and the influence of the external environment, LED chips gradually age, leading to a decrease in luminous efficiency and insufficient brightness. The industry typically considers an LED display to be faulty when its brightness decays to 50% of its shipped brightness, which severely impacts customer use.

[0003] In related technologies, to address the problem of insufficient display brightness caused by the gradual aging of LED beads, LED beads with better reliability and slower aging decay, as well as LED beads with higher brightness levels, are selected to manufacture the display screen, thereby extending the lifespan of the display screen. However, this will significantly increase the manufacturing cost of the display screen and raise the purchase threshold for customers. Summary of the Invention

[0004] The main objective of this application is to propose a method and system for adjusting the brightness of a display screen. By monitoring the brightness parameters of the display screen, when the brightness parameters are less than or equal to a first preset brightness parameter threshold (i.e., when the brightness decay of the display screen is less than 50% of the brightness at the time of shipment), the display brightness can be increased by adjusting the DC voltage output by the power supply module and / or the brightness-related parameters of the driver chip, thereby effectively extending the service life of the display screen.

[0005] To achieve the above objectives, this application proposes a method for adjusting the brightness of a display screen. The display screen includes a power module and a driver chip. The power module supplies power to the display screen, and the driver chip drives the display screen to display content. The method includes:

[0006] Monitor the brightness parameters of the display screen and determine whether the brightness parameters of the display screen are less than or equal to a first preset brightness parameter threshold;

[0007] If the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold, the DC voltage output by the power module and / or the brightness-related parameters of the driver chip are adjusted within an adjustable range so that the brightness parameter of the display screen is greater than or equal to the set brightness parameter threshold.

[0008] In one embodiment of this application, adjusting the DC voltage output by the power module and / or the brightness-related parameters of the driver chip within an adjustable range, such that the brightness parameter of the display screen is greater than or equal to a set brightness parameter threshold, includes:

[0009] Within the adjustable voltage range, the DC voltage output by the power module is adjusted step by step, and the brightness parameter of the display screen after adjustment is tested to see if it is greater than or equal to the second preset brightness parameter threshold.

[0010] If the brightness parameter of the display screen after adjustment is greater than or equal to the second preset brightness parameter threshold, then the current DC voltage after adjustment is determined to be the target DC voltage, and the power module is controlled to output the target DC voltage, wherein the second preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

[0011] In one embodiment of this application, if the brightness parameter of the display screen after adjustment cannot be greater than or equal to the second preset brightness parameter threshold, then the maximum DC voltage that the power module can output within the voltage adjustable range is determined as the target DC voltage, and the power module is controlled to output the target DC voltage.

[0012] The brightness-related parameters of the driver chip are adjusted within an adjustable range to adjust the luminous efficiency of the display screen, and the brightness parameters of the display screen after adjustment are tested to see if they are greater than or equal to a third preset brightness parameter threshold.

[0013] If the adjusted brightness parameter of the display screen is greater than or equal to the third preset brightness parameter threshold, the adjusted current brightness-related parameters are saved so that the driver chip works according to the adjusted current brightness-related parameters. The third preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

[0014] If the adjusted brightness parameter of the display screen cannot be greater than or equal to the third preset brightness parameter threshold, a notification will be issued that the display screen's usage period has expired.

[0015] In one embodiment of this application, adjusting the DC voltage output by the power module and / or the brightness-related parameters of the driver chip within an adjustable range, such that the brightness parameter of the display screen is greater than or equal to a set brightness parameter threshold, includes:

[0016] The brightness-related parameters of the driver chip are adjusted within an adjustable range to adjust the luminous efficiency of the display screen, and the brightness parameters of the display screen after adjustment are tested to see if they are greater than or equal to a third preset brightness parameter threshold.

[0017] If the adjusted brightness parameter of the display screen is greater than or equal to the third preset brightness parameter threshold, the adjusted current brightness-related parameters are saved so that the driver chip works according to the adjusted current brightness-related parameters, and the third preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

[0018] In one embodiment of this application, if the brightness parameter of the display screen after adjustment cannot be greater than or equal to the third preset brightness parameter threshold, then the brightness-related parameter of the driving chip corresponding to the maximum luminous efficiency that the display screen can achieve within the adjustable range of the number of times is determined as the target brightness-related parameter and saved, so that the driving chip works according to the target brightness-related parameter.

[0019] Within the adjustable voltage range, the DC voltage output by the power module is adjusted step by step, and the brightness parameter of the display screen after adjustment is tested to see if it is greater than or equal to the second preset brightness parameter threshold.

[0020] If the brightness parameter of the display screen after adjustment is greater than or equal to the second preset brightness parameter threshold, then the current DC voltage after adjustment is determined to be the target DC voltage, and the power module is controlled to output the target DC voltage, wherein the second preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

[0021] If the adjusted brightness parameter of the display screen cannot be greater than or equal to the second preset brightness parameter threshold, a notification will be issued that the display screen's usage period has expired.

[0022] To achieve the above objectives, embodiments of this application propose a brightness adjustment system for a display screen, used to execute the method described in any embodiment of this application. The brightness adjustment system includes:

[0023] A brightness monitoring module, which is electrically connected to the display screen, is used to monitor the brightness parameters of the display screen;

[0024] The video master control module, which is electrically connected to the brightness monitoring module and the display screen, is used to perform the following steps:

[0025] Receive the brightness parameters of the display screen monitored by the brightness monitoring module;

[0026] Determine whether the brightness parameter of the display screen is less than or equal to a first preset brightness parameter threshold;

[0027] If the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold, the DC voltage output by the power module and / or the brightness-related parameters of the driver chip are adjusted within the adjustable range so that the brightness parameter of the display screen is greater than or equal to the set brightness parameter threshold.

[0028] In one embodiment of this application, the display screen includes at least one display cabinet, the display cabinet comprising:

[0029] The display module includes a driver chip and is used to display image content;

[0030] A power module, which is electrically connected to the display module, is used to supply power to the various components inside the display cabinet;

[0031] The adapter board is electrically connected to the power module and the display module, and is also electrically connected to the video main control module;

[0032] Correspondingly, the video master control module is used for:

[0033] If the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold, an adjustment command is sent to the adapter board so that the adapter board adjusts the DC voltage output by the power module and / or the brightness-related parameters of the driver chip within an adjustable range according to the adjustment command, so that the brightness parameter of the display screen is greater than or equal to the set brightness parameter threshold.

[0034] In one embodiment of this application, the adapter board includes:

[0035] A power management module is electrically connected to the power module, and the power management module is used to monitor the DC voltage output by the power module;

[0036] A receiving card is electrically connected to the power management module and the display module. The receiving card is also connected to the video main control module. The receiving card is used to receive adjustment commands sent by the video main control module, and adjust the DC voltage output by the power module within the voltage adjustable range according to the adjustment commands, and / or adjust the brightness-related parameters of the driver chip within the number of times adjustable according to the adjustment commands, so that the brightness parameters of the display screen are greater than or equal to a set brightness parameter threshold.

[0037] In one embodiment of this application, the brightness adjustment system further includes a remote service platform. Correspondingly, the video main control module includes a video processor and a sending card, and the video processor is electrically connected to the sending card.

[0038] The remote service platform is communicatively connected to the video processor, the sending card is communicatively connected to the receiving card, and the video processor is also electrically connected to the brightness monitoring module.

[0039] The video processor is used to acquire the brightness parameters of the display screen monitored by the brightness monitoring module and send them to the remote service platform.

[0040] The remote service platform is used to send an adjustment command to the video processor when the brightness parameter of the display screen is less than or equal to a first preset brightness parameter threshold. This causes the video processor to transmit the adjustment command to the receiving card via the sending card. The receiving card then adjusts the DC voltage output by the power module within an adjustable voltage range according to the adjustment command, and / or adjusts the brightness-related parameters of the driver chip within an adjustable number of times according to the adjustment command, so that the brightness parameter of the display screen is greater than or equal to a set brightness parameter threshold.

[0041] In one embodiment of this application, the video processor is further configured to:

[0042] After the receiving card adjusts the DC voltage output by the power module within the adjustable voltage range according to the adjustment instruction, and / or adjusts the brightness-related parameters of the driver chip within the adjustable number of times according to the adjustment instruction, if the brightness parameter of the display screen cannot be greater than or equal to the set brightness parameter threshold, it receives a notification from the receiving card that the display screen usage period has expired, and returns the notification to the remote service platform.

[0043] In the technical solution provided in this application embodiment, by monitoring the brightness parameters of the display screen, when the brightness parameters of the display screen are less than or equal to a first preset brightness parameter threshold, or when the brightness decay of the display screen is less than 50% of the brightness at the time of shipment, the display brightness can be increased by adjusting the DC voltage output by the power module and / or adjusting the brightness-related parameters of the driver chip (adjusting the luminous efficiency of the display screen), such as by increasing the DC voltage output by the power module and the luminous efficiency. This effectively extends the service life of the display screen when the brightness decay is less than 50% of the brightness at the time of shipment. Attached Figure Description

[0044] Figure 1 This is a schematic block diagram of a display screen brightness adjustment system provided in an embodiment of this application.

[0045] Figure 2 This is a schematic diagram showing the power management module integrated into the receiver card or power module.

[0046] Figure 3 This is a schematic diagram showing that the power management module is independent of the receiver card or power module, and each display cabinet contains one power management module.

[0047] Figure 4This is a schematic diagram showing that the power management module is independent of the receiver card or power module, and multiple display cabinets share one power management module.

[0048] Figure 5 This is another schematic block diagram of a display screen brightness adjustment system provided in one embodiment of this application.

[0049] Figure 6 This is a first flowchart of a brightness adjustment method for a display screen provided in an embodiment of this application.

[0050] Figure 7 This is a second flowchart of a brightness adjustment method for a display screen provided in an embodiment of this application.

[0051] Figure 8 This is a third flowchart of a brightness adjustment method for a display screen provided in an embodiment of this application.

[0052] Figure label:

[0053] 100. Brightness monitoring module; 200. Video main control module; 300. Display screen; 400. Remote service platform;

[0054] 210. Video processor; 220. Transmitting card;

[0055] 310. Display cabinet; 311. Display module; 312. Power module; 313. Adapter board; 3131. Power management module; 3132. Receiver card. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0057] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0059] During use, LED displays are affected by the cumulative lighting time and the external environment, causing the LED beads to gradually age, resulting in a gradual decrease in LED luminous efficiency and insufficient brightness of the display screen.

[0060] In related technologies, to address the problem of insufficient display brightness caused by the gradual aging of LED beads, LED beads with better reliability and slower aging decay, as well as LED beads with higher brightness levels, are selected to manufacture the display screen, thereby extending the lifespan of the display screen. However, this will significantly increase the manufacturing cost of the display screen and raise the purchase threshold for customers.

[0061] Based on this, this application proposes a method for adjusting the brightness of a display screen. By monitoring the brightness parameters of the display screen, when the brightness parameters of the display screen are less than or equal to a first preset brightness parameter threshold (i.e., when the brightness decay of the display screen is less than 50% of the brightness at the time of shipment), the display brightness of the display screen can be increased by adjusting the DC voltage output by the power supply module and / or the brightness-related parameters of the driver chip, which can effectively extend the service life of the display screen.

[0062] Reference Figure 1 ,Depend on Figure 1 As shown, the brightness adjustment system of the display screen includes a brightness monitoring module 100 and a video main control module 200. The brightness monitoring module 100 is electrically connected to the display screen 300, and the video main control module 200 is electrically connected to the brightness monitoring module 100. The display screen 300 includes a power supply module and a driver chip (not shown in the figure). The power supply module supplies power to the display screen 300, and the driver chip drives the display screen 300 to display content.

[0063] The brightness monitoring module 100 can monitor the brightness parameters of the display screen 300 in real time or periodically, and send the monitored brightness parameters (such as luminous intensity, illuminance, total light emission, etc.) to the video main control module 200 via a signal line. After receiving the brightness parameters of the display screen monitored by the brightness monitoring module 100, the video main control module 200 can determine whether the brightness parameters of the display screen 300 are less than or equal to a first preset brightness parameter threshold, that is, whether the brightness of the display screen 300 has decayed to less than 50% of the brightness at the time of shipment. If the brightness parameters of the display screen are less than or equal to the first preset brightness parameter threshold, it indicates that the brightness decay of the display screen is serious. At this time, the DC voltage output by the power module and / or the brightness-related parameters of the driver chip (adjusting the luminous efficiency of the display screen) can be adjusted within the adjustable range to make the brightness parameters of the display screen 300 greater than or equal to the set brightness parameter threshold. That is, by adjusting the DC voltage output by the power module and the luminous efficiency, the display brightness of the display screen can be improved, thereby effectively extending the service life of the display screen 300.

[0064] The brightness monitoring module 100 can be a sensor or instrument that meets the requirements for brightness detection, such as a photoresistor or a brightness measuring instrument. The photoresistor detects the display brightness of the screen 300 by measuring the change in resistance with light intensity. The brightness measuring instrument is a professional optical measurement device that can accurately acquire brightness data (such as nits, lumens, etc.). The brightness monitoring module 100 can be connected to the video main control module 200 via a signal cable (wired or wireless). The brightness monitoring module 100 can be configured to monitor the brightness parameters of the display screen (such as brightness, luminous intensity, illuminance, total light emission, etc.) in real time or periodically. The brightness parameters of the display screen 300 monitored by the brightness monitoring module 100 can be transmitted to the video main control module 200 via the signal cable, allowing the video main control module 200 to obtain the current brightness parameters of the display screen 300 and determine the brightness decay of the display screen 300 based on these parameters.

[0065] The video main control module 200 is electrically connected to the brightness monitoring module 100 and the display screen 300. When the brightness parameter of the display screen is less than or equal to a first preset brightness parameter threshold, i.e., when severe brightness decay is detected, the video main control module 200 sends a brightness adjustment command to the display screen 300. This allows the display screen 300 to adjust the DC voltage output by the power module and / or adjust the brightness-related parameters of the driver chip (such as refresh rate, frequency division ratio, etc.) within an adjustable range. In other words, by adjusting the DC voltage output by the power module and the luminous efficiency of the display screen 300, the brightness parameter of the display screen 300 is made greater than or equal to the set brightness parameter threshold, effectively improving the display brightness and thus extending the service life of the display screen 300.

[0066] The display screen 300 may include, but is not limited to, LED displays and OLED displays. The display screen 300 may include at least one display cabinet 310, and the display screen 300 may be composed of several display cabinets 310 spliced ​​together. The display cabinet 310 is used to receive the display data converted by the video main control module 200 to display specific image content.

[0067] The display cabinet 310 may include a display module 311. The display module 311, also known as a lamp board, may include an LED display array, a driver chip circuit (i.e., a driver chip), a row output transistor chip circuit, a power conversion circuit, and other circuits. The display module 311 is used to display received image data. Several display modules 311 can be combined to form a display cabinet 310. The LED display array consists of multiple LED beads, directly realizing image display. The driver chip circuit is used to control parameters such as LED brightness, grayscale, and refresh rate; some solutions simplify the structure through a driver circuit layer. The row output transistor chip circuit assists the driver chip in completing row and column scanning control, improving display stability. The power conversion circuit may integrate a DC-DC conversion module (such as a Boost / Buck circuit) to provide a stable voltage to the LEDs.

[0068] The display cabinet 310 may also include a power module 312, which may include, but is not limited to, an AC-DC switching power supply, a DC-DC power conversion circuit (DC to DC power supply, Boost conversion circuit, Buck conversion circuit, Boost-Buck conversion circuit, etc.). The power module 312 may be set independently or integrated into the adapter board 313 or the display module 311. The power module 312 is the power supply for the entire display cabinet 310 and can be used to power the adapter board 313 and the display module 311.

[0069] The display enclosure 310 may also include an adapter board 313, which is a circuit interface board between the power module 312 and the display module 311, responsible for voltage distribution, signal conversion, or physical connection. The adapter board 313 is also electrically connected to the video main control module 200. When the video main control module 200 determines that the brightness parameter of the display screen 300 is less than or equal to a first preset brightness parameter threshold, it will send an adjustment command to the adapter board 313, so that the adapter board 313 adjusts the DC voltage output by the power module 312 within an adjustable range according to the adjustment command, and / or adjusts the brightness-related parameters of the driver chip, so that the brightness parameter of the display screen 300 is greater than or equal to the set brightness parameter threshold.

[0070] The adapter board 313 may include a power management module 3131 and a receiver card 3132. The receiver card 3132, also known as a control card or driver card, is used to receive data (including image data and control commands) transmitted by the video master control module 200 and to process the driving of the display module 311. The receiver card 3132 is connected to both the power management module 3131 and the video master control module 200, and can transmit monitoring data fed back from the power management module 3131 back to the video master control module 200.

[0071] The receiver card 3132 is electrically connected to the power management module 3131 and the display module 311, and is also connected to the video main control module 200. The receiver card 3132 can be used to receive adjustment commands sent by the video main control module 200, and adjust the DC voltage output by the power module 312 within the adjustable voltage range according to the adjustment commands, and / or adjust the brightness-related parameters of the driver chip within the adjustable frequency range according to the adjustment commands, so that the brightness parameter of the display screen 300 is greater than or equal to the set brightness parameter threshold.

[0072] The power management module 3131 is electrically connected to the power module 312. The power management module 3131 is used to monitor the DC voltage output by the power module 312 and feeds back the monitored DC voltage output by the power module 312 to the video master control module 200, so that the video master control module 200 can obtain the DC voltage output by the power module 312 monitored by the power management module 3131.

[0073] Reference Figures 2-4 , Figure 2 This is a diagram illustrating the integration of a power management module into a receiver card or power module. Figure 3 This is a diagram showing that the power management module is separate from the receiver card or power module, and each display cabinet contains one power management module. Figure 4 This is a schematic diagram illustrating a power management module independent of the receiver card or power module, where multiple display cabinets share a single power management module. The power management module 3131 can be a power management circuit composed of a DSP (Digital Signal Processor), MCU (Microcontroller), or SOC (System-on-a-Chip). Its function is to monitor the DC voltage output by the power module 312 and transmit the acquired voltage data back to the video main control module 322. The power management module 3131 can be independent of the receiver card 3132 or the power module 312, or it can be... Figure 2 As shown, it is integrated into the receiver card 3132 or the power module 312. When the power management module 3131 is independent of the receiver card 3132 or the power module 312, it can be as follows: Figure 3 As shown, each display cabinet 310 includes a power management module 3131, or it can be as follows: Figure 4 As shown, multiple display cabinets 310 share a single power management module 3131.

[0074] In some embodiments, refer to Figure 5 , Figure 5 This is another schematic block diagram of a display screen brightness adjustment system provided in one embodiment of this application. Figure 5As shown, the brightness adjustment system of the display screen includes a brightness monitoring module 100, a video main control module 200, and a remote service platform 400. The brightness monitoring module 100 is electrically connected to the display screen 300, and the video main control module 200 is electrically connected to the brightness monitoring module 100. The display screen 300 includes a power supply module 312 and a driver chip (not shown in the figure). The power supply module 312 supplies power to the display screen 300, and the driver chip drives the display screen 300 to display content. The video main control module 200 includes a video processor 210 and a sending card 220, with the video processor 210 electrically connected to the sending card 220. The remote service platform 400 is communicatively connected to the video processor 210, and the sending card 220 is communicatively connected to the receiving card 3132. The video processor 210 is also electrically connected to the brightness monitoring module 100.

[0075] The video processor 210 acquires the brightness parameters of the display screen 300 monitored by the brightness monitoring module 100 and sends them to the remote service platform 400. After receiving the brightness parameters of the display screen 300 from the brightness monitoring module 100, the remote service platform 400 determines whether the brightness parameters of the display screen 300 are less than or equal to a first preset brightness parameter threshold. If the brightness parameters of the display screen 300 are less than or equal to the first preset brightness parameter threshold, the remote service platform 400 sends an adjustment command to the video processor 210, causing the video processor 210 to transmit the adjustment command to the receiving card 3132 via the sending card 220. The receiving card 3132 then adjusts the DC voltage output by the power module 312 within an adjustable voltage range according to the adjustment command, and / or adjusts the brightness-related parameters of the driver chip within an adjustable frequency range according to the adjustment command, so that the brightness parameters of the display screen 300 are greater than or equal to the set brightness parameter threshold. In other words, by adjusting the DC voltage output by the power module 312 and the luminous efficiency, the display brightness of the display screen 300 is improved, thereby effectively extending the service life of the display screen 300.

[0076] Specifically, after the receiving card 3132 adjusts the DC voltage output by the power module 312 within the adjustable voltage range according to the adjustment command, and / or adjusts the brightness-related parameters of the driver chip within the adjustable frequency range according to the adjustment command, if the brightness parameter of the display screen 300 after adjustment cannot be greater than or equal to the set brightness parameter threshold, the receiving card 3132 can send a notification of the expiration of the display screen usage period to the video processor 210. After receiving the notification of the expiration of the display screen usage period sent by the receiving card 3132, the video processor 210 can return the notification of the expiration of the display screen usage period to the remote service platform 400.

[0077] In this embodiment, the brightness data of the display screen 300 is collected in real time by the brightness monitoring module 100, and the video main control module 200 links with the remote service platform 400 to achieve intelligent closed-loop control. When the brightness parameter of the display screen 300 is detected to be lower than the first preset brightness parameter threshold, the system can synchronously adjust the DC voltage output by the power module 312 (hardware layer) and / or the brightness-related parameters of the driver chip (software layer) to improve the display brightness of the display screen 300. This ensures consistent display effect, delays LED aging, supports remote centralized management, and significantly improves the maintenance efficiency and service life of the large screen system.

[0078] Reference Figure 6 , Figure 6 This is a first flowchart of a brightness adjustment method for a display screen provided in an embodiment of this application, which is executed by a brightness adjustment system for a display screen provided in any embodiment of this application, including but not limited to steps S610 to S630.

[0079] Step S610: Monitor the brightness parameters of the display screen;

[0080] Step S620: Determine whether the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold.

[0081] In step S630, if the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold, the DC voltage output by the power module and / or the brightness-related parameters of the driver chip are adjusted within the adjustable range so that the brightness parameter of the display screen is greater than or equal to the set brightness parameter threshold; if the brightness parameter of the display screen is greater than the first preset brightness parameter threshold, the process returns to step S610.

[0082] In this embodiment, by monitoring the brightness parameters of the display screen, when the brightness parameters are less than or equal to a first preset brightness parameter threshold, or when the brightness decay of the display screen is less than 50% of its original brightness, the display brightness can be increased by adjusting the DC voltage output of the power module and / or adjusting the brightness-related parameters of the driver chip (adjusting the luminous efficiency of the display screen). For example, by increasing the DC voltage output of the power module and the luminous efficiency, the display brightness can be increased, thereby effectively extending the service life of the display screen.

[0083] Reference Figure 7 , Figure 7 This is a second flowchart of a brightness adjustment method for a display screen provided in an embodiment of this application, which is executed by a brightness adjustment system for a display screen provided in any embodiment of this application, including but not limited to steps S710 to S7120.

[0084] Step S710: Monitor the brightness parameters of the display screen;

[0085] Step S720: Determine whether the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold.

[0086] Step S730: If the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold, adjust the DC voltage output by the power module step by step within the voltage adjustable range; if the brightness parameter of the display screen is greater than the first preset brightness parameter threshold, return to step S710.

[0087] Step S740: Test whether the brightness parameter of the adjusted display screen is greater than or equal to the second preset brightness parameter threshold.

[0088] Step S750: If the brightness parameter of the adjusted display screen is greater than or equal to the second preset brightness parameter threshold, then the adjusted current DC voltage is determined to be the target DC voltage, and the power module is controlled to output the target DC voltage, and the second preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

[0089] Step S760: If the brightness parameter of the display screen after adjustment is less than the second preset brightness parameter threshold, determine whether the adjustment is within the voltage adjustable range.

[0090] In step S770, if the adjustment is not within the adjustable voltage range, the maximum DC voltage that the power module can output within the adjustable voltage range is determined as the target DC voltage, and the power module is controlled to output the target DC voltage. If the adjustment is within the adjustable voltage range, the process returns to step S730.

[0091] Step S780: Adjust the brightness-related parameters of the driver chip within an adjustable range of times to adjust the luminous efficiency of the display screen.

[0092] Step S790: Test whether the brightness parameter of the adjusted display screen is greater than or equal to the third preset brightness parameter threshold.

[0093] Step S7100: If the brightness parameter of the display screen after adjustment is greater than or equal to the third preset brightness parameter threshold, then save the adjusted current brightness related parameters so that the driver chip works according to the adjusted current brightness related parameters. The third preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

[0094] Step S7110: If the brightness parameter of the display screen after adjustment is less than the third preset brightness parameter threshold, determine whether the adjustment is within the adjustable range of times.

[0095] In step S7120, if the adjustment is not within the adjustable range, a notification is issued that the display screen's usage period has expired; if the adjustment is within the adjustable range, the process returns to step S780.

[0096] In this embodiment, the brightness parameters of the display screen can be monitored in real time or periodically. If the brightness parameters of the display screen are detected to have decayed below a first preset brightness parameter threshold, it indicates that the display brightness has severely degraded. In this case, a hardware adjustment program can be initiated. That is, the DC voltage output by the power module is adjusted step by step within the adjustable voltage range. The adjustable voltage range may vary depending on the design of the power module. For example, the adjustable voltage range is less than or equal to 0.5V, and the DC voltage output by the power module is adjusted step by step by increasing it by 0.1V at each level based on the standard DC voltage output by the power module. For example, if the standard DC voltage output by the power module is 5V, then the standard DC voltage output by the power module is first increased by 0.1V, that is, the DC voltage output by the power module is adjusted to 5.1V. Then, it is tested whether the brightness parameters of the display screen after adjustment are greater than or equal to a second preset brightness parameter threshold. If the brightness parameters of the display screen after adjustment are greater than or equal to the second preset brightness parameter threshold, then the current DC voltage (5.1V) after adjustment is determined as the target DC voltage, and the power module is controlled to output the target DC voltage (5.1V). At this point, by increasing the DC voltage output of the power module, the brightness parameter of the display screen can be increased to exceed the set brightness parameter threshold, which can meet the usage requirements of the display screen and effectively extend its service life. If the brightness parameter of the display screen after adjustment is less than the second preset brightness parameter threshold, then increase it by another 0.1V, that is, adjust the DC voltage output of the power module to 5.2V, and then test whether the brightness parameter of the display screen after adjustment is greater than or equal to the second preset brightness parameter threshold. By adjusting the DC voltage output of the power module step by step within the adjustable voltage range in this way, if the brightness parameter of the display screen is still less than the second preset brightness parameter threshold when the DC voltage output of the power module is adjusted to 5V + 0.5V, it means that the brightness parameter of the display screen cannot exceed the second preset brightness parameter threshold after adjusting the DC voltage output of the power module within the adjustable voltage range. That is, hardware adjustment cannot effectively increase the display brightness of the display screen to the set value. At this point, the maximum DC voltage that the power module can output within the adjustable voltage range is first determined as the target DC voltage, and the power module is controlled to output the target DC voltage. That is, the power module is first controlled to output the maximum voltage (within the adjustable range). Then, the software adjustment program is started, which adjusts the brightness-related parameters of the driver chip (such as refresh rate, frequency division coefficient, etc.) within the adjustable range to adjust the luminous efficiency of the display screen. The adjustable range can vary depending on the driver chip. For example, four configuration files are preset, each corresponding to the adjustment of the driver chip's brightness-related parameters, and each configuration file corresponds to a luminous efficiency. The luminous efficiency corresponding to the four configuration files can be increased sequentially.The adjustment principle is to sequentially adjust the brightness-related parameters of the driver chip in ascending order of luminous efficiency. After each adjustment, the brightness parameter of the display screen is tested to see if it is greater than or equal to the third preset brightness parameter threshold. If the brightness parameter is greater than or equal to the third preset brightness parameter threshold, the adjusted current brightness-related parameters are saved (i.e., the corresponding configuration file is saved and run), so that the driver chip operates according to the adjusted current brightness-related parameters. If the adjusted brightness parameter is less than the third preset brightness parameter threshold, the next adjustment continues. If the brightness parameter is still less than the third preset brightness parameter threshold when the luminous efficiency is adjusted to the maximum, it indicates that the brightness parameter of the display screen cannot exceed the third preset brightness parameter threshold after software adjustment. In other words, even with both hardware and software adjustments, the display brightness cannot be effectively increased to the set value. At this point, the user and remote service platform can be notified that the display screen's usage period has expired.

[0097] In this embodiment, a hardware-software dual-level collaborative mechanism enables precise maintenance of the display screen. When severe brightness degradation is detected, the output voltage of the power module can be gradually increased within the adjustable voltage range by a preset voltage adjustment increment. If the voltage is still insufficient even at its maximum, the system automatically switches to adjusting the brightness-related parameters of the driver chip, achieving brightness compensation through multi-level luminous efficiency configuration. This tiered adjustment strategy avoids overvoltage risks and maximizes the lifespan of the display screen. Furthermore, remote service platform alerts create a closed loop of monitoring, adjustment, and maintenance, significantly reducing manual intervention costs and extending the overall lifespan of the display screen.

[0098] Reference Figure 8 , Figure 8 This is a third flowchart of a brightness adjustment method for a display screen provided in an embodiment of this application, which is executed by a brightness adjustment system for a display screen provided in any embodiment of this application, including but not limited to steps S810 to S8120.

[0099] Step S810: Monitor the brightness parameters of the display screen;

[0100] Step S820: Determine whether the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold.

[0101] Step S830: If the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold, adjust the brightness-related parameters of the driver chip within the adjustable range of times to adjust the luminous efficiency of the display screen; if the brightness parameter of the display screen is greater than the first preset brightness parameter threshold, return to step S810.

[0102] Step S840: Test whether the brightness parameter of the adjusted display screen is greater than or equal to the third preset brightness parameter threshold.

[0103] Step S850: If the brightness parameter of the display screen after adjustment is greater than or equal to the third preset brightness parameter threshold, then save the adjusted current brightness related parameters so that the driver chip works according to the adjusted current brightness related parameters. The third preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

[0104] Step S860: If the brightness parameter of the display screen after adjustment is less than the third preset brightness parameter threshold, determine whether the adjustment is within the adjustable range of times.

[0105] Step S870: If the adjustment is not within the adjustable range of times, determine the brightness-related parameters of the driver chip corresponding to the maximum luminous efficiency that the display screen can achieve within the adjustable range of times as the target brightness-related parameters and save them so that the driver chip can work according to the target brightness-related parameters.

[0106] Step S880: Adjust the DC voltage output by the power module step by step within the adjustable voltage range;

[0107] Step S890: Test whether the brightness parameter of the adjusted display screen is greater than or equal to the second preset brightness parameter threshold.

[0108] Step S8100: If the brightness parameter of the adjusted display screen is greater than or equal to the second preset brightness parameter threshold, then the adjusted current DC voltage is determined to be the target DC voltage, and the power module is controlled to output the target DC voltage, and the second preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

[0109] Step S8110: If the brightness parameter of the display screen after adjustment is less than the second preset brightness parameter threshold, determine whether the adjustment is within the voltage adjustable range.

[0110] In step S8120, if the adjustment is not within the adjustable voltage range, a notification is issued that the display screen's usage period has expired; if the adjustment is within the adjustable voltage range, the process returns to step S880.

[0111] In this embodiment, the brightness parameters of the display screen can be monitored in real time or periodically. If the brightness parameters of the display screen are detected to have decayed below a first preset brightness parameter threshold, it indicates that the display screen's brightness has severely decayed. In this case, a software adjustment program can be started. That is, the brightness-related parameters of the driver chip (such as refresh rate, frequency division coefficient, etc.) are adjusted within an adjustable range to adjust the luminous efficiency of the display screen. The adjustable range can vary depending on the driver chip. For example, four configuration files are preset, each corresponding to the adjustment of the driver chip's brightness-related parameters, and each configuration file corresponds to a luminous efficiency. The luminous efficiency corresponding to the four configuration files can be increased sequentially. The adjustment principle is to adjust the brightness-related parameters of the driver chip sequentially in order of increasing luminous efficiency. After each adjustment, the brightness parameters of the display screen after adjustment are tested to see if they are greater than or equal to a third preset brightness parameter threshold. If the brightness parameters of the display screen after adjustment are greater than or equal to the third preset brightness parameter threshold, the adjusted current brightness-related parameters are saved (i.e., the corresponding configuration file is saved and run), so that the driver chip works according to the adjusted current brightness-related parameters. If the brightness parameters of the display screen after adjustment are less than the third preset brightness parameter threshold, the next adjustment continues. If the brightness parameter of the display screen is still less than the third preset brightness parameter threshold when the luminous efficiency is adjusted to the maximum, it indicates that the brightness parameter of the display screen cannot exceed the third preset brightness parameter threshold after adjustment. In other words, software adjustment cannot effectively increase the display brightness to the set value. In this case, the brightness-related parameters of the driver chip corresponding to the maximum luminous efficiency that the display screen can achieve within the adjustable range can be determined as the target brightness-related parameters and saved. This allows the driver chip to operate according to the target brightness-related parameters. Then, the hardware adjustment program is started, which adjusts the DC voltage output by the power module step by step within the adjustable voltage range. The adjustable voltage range can vary depending on the power module design. For example, the adjustable voltage range is less than or equal to 0.5V, and the step-by-step adjustment of the DC voltage output by the power module is based on the standard DC voltage output by the power module, with each step increasing by 0.1V. If the standard DC voltage output by the power module is 5V, first increase it by 0.1V, adjusting the DC voltage output to 5.1V. Then test whether the brightness parameter of the display screen after adjustment is greater than or equal to the second preset brightness parameter threshold. If the brightness parameter of the display screen after adjustment is greater than or equal to the second preset brightness parameter threshold, then determine the current adjusted DC voltage (5.1V) as the target DC voltage, and control the power module to output the target DC voltage (5.1V). At this time, by increasing the DC voltage output by the power module, the brightness parameter of the display screen can be increased to exceed the set brightness parameter threshold, which can meet the usage requirements of the display screen and effectively extend the service life of the display screen.If the adjusted brightness parameter of the display screen is less than the second preset brightness parameter threshold, then increase the voltage by 0.1V, adjusting the DC voltage output by the power module to 5.2V, and then test whether the adjusted brightness parameter of the display screen is greater than or equal to the second preset brightness parameter threshold. This process is repeated step-by-step within the adjustable voltage range. When the DC voltage output by the power module is adjusted to 5V + 0.5V, if the adjusted brightness parameter of the display screen is still less than the second preset brightness parameter threshold, it indicates that adjusting the DC voltage output by the power module within the adjustable voltage range cannot exceed the second preset brightness parameter threshold. In other words, software and hardware adjustments cannot effectively increase the display brightness to the set value. At this point, the user and the remote service platform can be notified that the display screen's usage period has expired.

[0112] In this embodiment, when the brightness parameter of the display screen is lower than the first preset brightness parameter threshold, it indicates that the display brightness of the display screen has severely degraded. At this time, software optimization can be performed first through the 4-level luminous efficiency profile of the driver chip. If the luminous efficiency is adjusted to the maximum and still does not meet the standard, hardware adjustment is initiated, that is, the output voltage of the power module is gradually increased within the adjustable voltage range by a preset voltage adjustment range. This software-first, then hardware adjustment sequence can avoid the risk of power overload and maximize the extension of the display screen life through parameter combination. Finally, in conjunction with the remote early warning mechanism, intelligent closed-loop management of display screen performance degradation can be achieved, which can significantly reduce maintenance costs and extend the equipment service life.

[0113] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0114] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0115] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0116] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0117] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0118] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0119] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0120] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0121] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A method for adjusting the brightness of a display screen, characterized in that, The display screen includes a power module and a driver chip. The power module supplies power to the display screen, and the driver chip drives the display screen to display content. The method includes: Monitor the brightness parameters of the display screen and determine whether the brightness parameters of the display screen are less than or equal to a first preset brightness parameter threshold; If the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold, the DC voltage output by the power module and / or the brightness-related parameters of the driver chip are adjusted within an adjustable range so that the brightness parameter of the display screen is greater than or equal to the set brightness parameter threshold.

2. The method according to claim 1, characterized in that, Adjusting the DC voltage output by the power module and / or the brightness-related parameters of the driver chip within an adjustable range, so that the brightness parameter of the display screen is greater than or equal to a set brightness parameter threshold, includes: Within the adjustable voltage range, the DC voltage output by the power module is adjusted step by step, and the brightness parameter of the display screen after adjustment is tested to see if it is greater than or equal to the second preset brightness parameter threshold. If the brightness parameter of the display screen after adjustment is greater than or equal to the second preset brightness parameter threshold, then the current DC voltage after adjustment is determined to be the target DC voltage, and the power module is controlled to output the target DC voltage, wherein the second preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

3. The method according to claim 2, characterized in that, If the brightness parameter of the display screen cannot be greater than or equal to the second preset brightness parameter threshold after adjustment, then the maximum DC voltage that the power module can output within the voltage adjustable range is determined as the target DC voltage, and the power module is controlled to output the target DC voltage. The brightness-related parameters of the driver chip are adjusted within an adjustable range to adjust the luminous efficiency of the display screen, and the brightness parameters of the display screen after adjustment are tested to see if they are greater than or equal to a third preset brightness parameter threshold. If the adjusted brightness parameter of the display screen is greater than or equal to the third preset brightness parameter threshold, the adjusted current brightness-related parameters are saved so that the driver chip works according to the adjusted current brightness-related parameters. The third preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold. If the adjusted brightness parameter of the display screen cannot be greater than or equal to the third preset brightness parameter threshold, a notification will be issued that the display screen's usage period has expired.

4. The method according to claim 1, characterized in that, Adjusting the DC voltage output by the power module and / or the brightness-related parameters of the driver chip within an adjustable range, so that the brightness parameter of the display screen is greater than or equal to a set brightness parameter threshold, includes: The brightness-related parameters of the driver chip are adjusted within an adjustable range to adjust the luminous efficiency of the display screen, and the brightness parameters of the display screen after adjustment are tested to see if they are greater than or equal to a third preset brightness parameter threshold. If the adjusted brightness parameter of the display screen is greater than or equal to the third preset brightness parameter threshold, the adjusted current brightness-related parameters are saved so that the driver chip works according to the adjusted current brightness-related parameters, and the third preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold.

5. The method according to claim 4, characterized in that, If the brightness parameter of the display screen cannot be greater than or equal to the third preset brightness parameter threshold after adjustment, the brightness-related parameter of the driver chip corresponding to the maximum luminous efficiency that the display screen can achieve within the adjustable range of the number of times is determined as the target brightness-related parameter and saved, so that the driver chip works according to the target brightness-related parameter. Within the adjustable voltage range, the DC voltage output by the power module is adjusted step by step, and the brightness parameter of the display screen after adjustment is tested to see if it is greater than or equal to the second preset brightness parameter threshold. If the brightness parameter of the display screen after adjustment is greater than or equal to the second preset brightness parameter threshold, then the current DC voltage after adjustment is determined to be the target DC voltage, and the power module is controlled to output the target DC voltage, wherein the second preset brightness parameter threshold is greater than or equal to the set brightness parameter threshold. If the adjusted brightness parameter of the display screen cannot be greater than or equal to the second preset brightness parameter threshold, a notification will be issued that the display screen's usage period has expired.

6. A brightness adjustment system for a display screen, used to perform the method according to any one of claims 1-5, characterized in that, The brightness adjustment system includes: A brightness monitoring module, which is electrically connected to the display screen, is used to monitor the brightness parameters of the display screen; The video master control module, which is electrically connected to the brightness monitoring module and the display screen, is used to perform the following steps: Receive the brightness parameters of the display screen monitored by the brightness monitoring module; Determine whether the brightness parameter of the display screen is less than or equal to a first preset brightness parameter threshold; If the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold, the DC voltage output by the power module and / or the brightness-related parameters of the driver chip are adjusted within the adjustable range so that the brightness parameter of the display screen is greater than or equal to the set brightness parameter threshold.

7. The brightness adjustment system according to claim 6, characterized in that, The display screen includes at least one display cabinet, the display cabinet comprising: The display module includes a driver chip and is used to display image content; A power module, which is electrically connected to the display module, is used to supply power to the various components inside the display cabinet; The adapter board is electrically connected to the power module and the display module, and is also electrically connected to the video main control module; Correspondingly, the video master control module is used for: If the brightness parameter of the display screen is less than or equal to the first preset brightness parameter threshold, an adjustment command is sent to the adapter board so that the adapter board adjusts the DC voltage output by the power module and / or the brightness-related parameters of the driver chip within an adjustable range according to the adjustment command, so that the brightness parameter of the display screen is greater than or equal to the set brightness parameter threshold.

8. The brightness adjustment system according to claim 7, characterized in that, The adapter plate includes: A power management module is electrically connected to the power module, and the power management module is used to monitor the DC voltage output by the power module; A receiving card is electrically connected to the power management module and the display module. The receiving card is also connected to the video main control module. The receiving card is used to receive adjustment commands sent by the video main control module, and adjust the DC voltage output by the power module within the voltage adjustable range according to the adjustment commands, and / or adjust the brightness-related parameters of the driver chip within the number of times adjustable according to the adjustment commands, so that the brightness parameters of the display screen are greater than or equal to a set brightness parameter threshold.

9. The brightness adjustment system according to claim 8, characterized in that, The brightness adjustment system also includes a remote service platform. Correspondingly, the video main control module includes a video processor and a sending card, and the video processor is electrically connected to the sending card. The remote service platform is communicatively connected to the video processor, the sending card is communicatively connected to the receiving card, and the video processor is also electrically connected to the brightness monitoring module. The video processor is used to acquire the brightness parameters of the display screen monitored by the brightness monitoring module and send them to the remote service platform. The remote service platform is used to send an adjustment command to the video processor when the brightness parameter of the display screen is less than or equal to a first preset brightness parameter threshold. This causes the video processor to transmit the adjustment command to the receiving card via the sending card. The receiving card then adjusts the DC voltage output by the power module within an adjustable voltage range according to the adjustment command, and / or adjusts the brightness-related parameters of the driver chip within an adjustable number of times according to the adjustment command, so that the brightness parameter of the display screen is greater than or equal to a set brightness parameter threshold.

10. The brightness adjustment system according to claim 9, characterized in that, The video processor is also used for: After the receiving card adjusts the DC voltage output by the power module within the adjustable voltage range according to the adjustment instruction, and / or adjusts the brightness-related parameters of the driver chip within the adjustable number of times according to the adjustment instruction, if the brightness parameter of the display screen cannot be greater than or equal to the set brightness parameter threshold after adjustment, it receives a notification from the receiving card that the display screen usage period has expired, and returns the notification to the remote service platform.

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