Display backlight control method, apparatus, device, storage medium, and program product

Abstract

The application discloses a display backlight control method, device, equipment, storage medium and program product, relates to the technical field of display temperature control, and discloses a display backlight control method, device, equipment, storage medium and program product, which comprises the following steps: acquiring protection level information, display temperature information and display time information; determining the current display state based on the protection level information, the display temperature information and the display time information, and obtaining a determination result; and controlling the backlight brightness and the lens reset based on the determination result. According to the application, the temperature and time information of the display are acquired, the backlight brightness is gradually limited according to a multistage protection mechanism, the backlight brightness and the lens reset are controlled, the non-recoverable damage and screen burning of the head-up display are prevented, the working condition of the head-up display PGU burning and damage is effectively avoided, and the display durability is enhanced.

Description

Technical Field

[0001] This application relates to the field of display temperature control technology, and in particular to display backlight control methods, devices, equipment, storage media, and program products. Background Technology

[0002] With the continuous development of society and economy, display temperature control technology has also made rapid progress. In order to improve the driver experience, head-up displays are used to project important driving information such as speed and navigation onto the windshield in front of the driver, so that the driver can see important driving information such as speed and navigation without looking down or turning his head. However, the head-up display is located in the high-temperature area of ​​the dashboard on the driver's side of the vehicle interior, which is directly exposed to the sun, and is easily damaged by high temperature. Therefore, temperature control of the head-up display is an essential task.

[0003] Currently, the existing technology for head-up displays uses TFT screens as the image source. However, the maximum temperature that a TFT LCD panel can withstand is 105°C. The image source part of the head-up display is not resistant to high temperatures and is prone to irreversible damage and failure. Furthermore, it cannot provide active protection. Therefore, how to automatically control the temperature of the display is a technical problem that urgently needs to be solved.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this application is to provide a display backlight control method, apparatus, device, storage medium, and program product, which aims to solve the technical problem of how to automate the temperature control of a display.

[0006] To achieve the above objectives, this application proposes a display backlight control method, the method comprising:

[0007] Obtain protection level information, monitor temperature information, and monitor time information;

[0008] Based on the protection level information, display temperature information, and display time information, determine the current display status and obtain the determination result;

[0009] Based on the judgment result, control the backlight brightness and lens reset.

[0010] In one embodiment, the steps following the acquisition of protection level information, display temperature information, and display time information include:

[0011] Obtain the thermocouple resistance value information, and determine the display temperature information based on the thermocouple resistance value information;

[0012] The display time information is determined based on the cumulative duration of the display temperature information.

[0013] Protection level information is obtained based on the display temperature information and display time information, which includes level one protection, level two protection, and level three protection.

[0014] In one embodiment, the step of determining the current display status based on the protection level information, display temperature information, and display time information, and obtaining the determination result, includes:

[0015] If the display temperature information is greater than the first preset temperature threshold and the display time information exceeds the first preset time, the first judgment result determines that level one protection needs to be activated; otherwise, the first judgment result determines that normal brightness should be restored.

[0016] If the temperature after the first restriction is greater than the second preset temperature threshold and the first restriction time exceeds the second preset time, or if the temperature after the first restriction is greater than the third preset temperature threshold and the first restriction time exceeds the third preset time, the second judgment result determines that secondary protection needs to be activated; otherwise, the second judgment result determines that normal brightness should be restored.

[0017] If the temperature after the second restriction is greater than the fourth preset temperature threshold and the second restriction time exceeds the fourth preset time, or if the temperature after the second restriction is greater than the fifth preset temperature threshold and the second restriction time exceeds the fifth preset time, the third judgment result determines that the third-level protection needs to be activated; otherwise, the third judgment result determines that the normal brightness should be restored.

[0018] If the temperature after the third restriction is greater than the sixth preset temperature threshold and the third restriction time exceeds the sixth preset time, or if the temperature after the third restriction is greater than the seventh preset temperature threshold and the third restriction time exceeds the seventh preset time, the fourth judgment result determines that the backlight needs to be turned off and the lens needs to be reset; otherwise, the fourth judgment result determines that the normal brightness needs to be restored.

[0019] The judgment result is obtained based on the first judgment result, the second judgment result, the third judgment result, and the fourth judgment result.

[0020] In one embodiment, the step of controlling the backlight brightness and lens reset based on the judgment result includes:

[0021] Based on the judgment result, obtain the backlight brightness information;

[0022] The backlight brightness and lens reset are controlled based on the backlight brightness information.

[0023] In one embodiment, the step of obtaining backlight brightness information based on the judgment result includes:

[0024] When the first judgment result is that the brightness has been restored to normal, or the second judgment result is that the brightness has been restored to normal, or the third judgment result is that the brightness has been restored to normal, or the fourth judgment result is that the brightness has been restored to normal, the backlight recovery information is obtained.

[0025] When the first judgment result is that Level 1 protection needs to be activated, or the second judgment result is that Level 2 protection needs to be activated, or the third judgment result is that Level 3 protection needs to be activated, or the fourth judgment result is that the backlight needs to be turned off and the lens needs to be reset, backlight limitation information is obtained;

[0026] Backlight brightness information is obtained based on the backlight recovery information and backlight limitation information.

[0027] In one embodiment, the step of controlling the backlight brightness and lens reset based on the backlight brightness information includes:

[0028] When the backlight brightness information is backlight recovery information, control the backlight brightness to recover to the initial value;

[0029] When the backlight brightness information is backlight limit information, the backlight brightness is controlled to the backlight brightness limit value and the lens is reset.

[0030] Furthermore, to achieve the above objectives, this application also proposes a display backlight control device, the display backlight control device comprising:

[0031] The acquisition module 10 is used to acquire protection level information, display temperature information, and display time information;

[0032] Processing module 20 is used to determine the current display status based on the protection level information, display temperature information and display time information, and obtain the determination result;

[0033] The execution module 30 is used to control the backlight brightness and lens reset based on the judgment result.

[0034] In addition, to achieve the above objectives, this application also proposes a display backlight control device, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the display backlight control method as described above.

[0035] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the display backlight control method described above.

[0036] In addition, to achieve the above objectives, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the display backlight control method described above.

[0037] One or more technical solutions proposed in this application have at least the following technical effects:

[0038] One embodiment of this application proposes a display backlight control method, which acquires protection level information, display temperature information, and display time information; determines the current display state based on the protection level information, display temperature information, and display time information, and obtains the determination result; and controls the backlight brightness and lens reset based on the determination result. Compared with the prior art, this application, by acquiring the display's temperature and time information, gradually limits the backlight brightness according to a multi-level protection mechanism, thereby controlling the backlight brightness and lens reset, preventing irreversible damage and burn-in to the head-up display (HUD), effectively avoiding the damage caused by the burn-in of the HUD's PGU (Power Generation Unit), and thus enhancing the display's durability. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

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

[0041] Figure 1 This is a flowchart illustrating an embodiment of the display backlight control method of this application.

[0042] Figure 2 This is a simplified diagram of the active over-temperature protection head-up display system of this application;

[0043] Figure 3 This is a simplified diagram of the PGU structure in this application;

[0044] Figure 4 This is a flowchart illustrating Embodiment 2 of the display backlight control method of this application;

[0045] Figure 5 This is a flowchart illustrating Embodiment 3 of the display backlight control method of this application;

[0046] Figure 6 This is a flowchart illustrating Embodiment 4 of the display backlight control method of this application;

[0047] Figure 7 A simplified flowchart illustrating the display backlight control method provided in this application embodiment;

[0048] Figure 8 This is a schematic diagram of the module structure of the display backlight control device according to an embodiment of this application;

[0049] Figure 9 This is a schematic diagram of the device structure of the hardware operating environment involved in the display backlight control method in this application embodiment.

[0050] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of this application and are not intended to limit this application.

[0052] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0053] The main solution of this application embodiment is: to obtain protection level information, display temperature information and display time information; to determine the current display status based on the protection level information, display temperature information and display time information, and to obtain the determination result; and to control the backlight brightness and lens reset based on the determination result.

[0054] In this embodiment, for ease of description, the following description will focus on recognizing a head-up display.

[0055] The existing technology uses TFT screens as the image source. However, the maximum temperature that a TFT LCD panel can withstand is 105°C. The image source part of the head-up display is not resistant to high temperatures and is prone to irreversible damage and failure, and cannot be actively protected.

[0056] This application provides a solution to obtain protection level information, display temperature information, and display time information; determine the current display status based on the protection level information, display temperature information, and display time information, and obtain the determination result; and control the backlight brightness and lens reset based on the determination result.

[0057] As can be seen from the above embodiments, this application obtains the temperature and time information of the display and gradually limits the backlight brightness according to the multi-level protection mechanism, thereby controlling the backlight brightness and lens reset, preventing irreversible damage and burn-in of the head-up display, effectively avoiding the working condition of the head-up display PGU burning out and thus enhancing the durability of the display.

[0058] Based on this, embodiments of this application provide a display backlight control method, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the display backlight control method of this application.

[0059] In this embodiment, the display backlight control method includes steps S10 to S30:

[0060] Step S10: Obtain protection level information, display temperature information, and display time information;

[0061] It should be noted that the protection level information reflects the characteristics of limiting the head-up display temperature, the display temperature information reflects the characteristics of the current operating temperature determined based on the thermocouple resistance value, and the display time information reflects the characteristics of the duration of exceeding the preset temperature based on the display temperature data.

[0062] Understandably, referring to Figure 2 , Figure 2 This is a simplified diagram of the active over-temperature protection head-up display system of this application. The image is generated from the PGU, illuminates a small reflector, is reflected by the small reflector to a large freeform mirror, is reflected by the large freeform mirror to the windshield, and finally reflected by the windshield into the human eye. Since light is reversible, external sunlight will also be reflected along this route and illuminate the PGU. At this time, the PGU will be subjected to solar radiation and suffer irreversible damage.

[0063] Additionally, it should be noted that, referring to Figure 3 , Figure 3 The diagram below shows a simplified representation of the PGU in this application. The LED light board serves as the backlight source. After the emitted light passes through the reflector cavity and Fresnel lens, the LED emission angle is further compressed and made more uniform. To ensure that the virtual image meets the brightness requirements, and given that the HUD is small enough, the power consumption of the LED chips increases. This also causes the PGU to operate at a higher temperature. If sunlight shines on the TFT at this time, it can easily cause the TFT screen to burn out. To achieve active protection against overheating of the head-up display, multiple thermocouples are added to the PGU design. The thermocouples are attached to the upper surface of the TFT. The current operating temperature is determined by checking the resistance value of the thermocouples, thereby achieving active self-protection of the head-up display system when it operates at an overheating temperature.

[0064] In one embodiment, to facilitate the acquisition of protection level information, display temperature information, and display time information, a corresponding information acquisition device, such as an information acquisition module, can be pre-set to acquire the protection level information, display temperature information, and display time information, and store the protection level information, display temperature information, and display time information in a corresponding storage device. The specific storage method is not limited, as long as it can realize the storage of the protection level information, display temperature information, and display time information, such as a storage module, memory, etc.

[0065] In practice, the information acquisition device is in a real-time or timed working state, acquiring protection level information, display temperature information, and display time information at all times or at all times. If the information acquisition device acquires the protection level information, display temperature information, and display time information at a certain moment, it performs subsequent processing based on the protection level information, display temperature information, and display time information.

[0066] For ease of understanding, we will take the acquisition of protection level information, display temperature information, and display time information as examples. The information acquisition device is the information acquisition module, and the storage device is the memory.

[0067] The information acquisition module acquires protection level information, such as level 1 protection, level 2 protection, and level 3 protection; acquires display temperature information, such as 81 degrees, 86 degrees, 93 degrees, and 101 degrees; and acquires display time information, such as 10 seconds and 2 minutes. The protection level information, display temperature information, and display time information are stored in the memory, and subsequent processing is performed based on the protection level information, display temperature information, and display time information.

[0068] Step S20: Determine the current display status based on the protection level information, display temperature information, and display time information, and obtain the determination result;

[0069] It is understandable that monitors may be at risk of damage when operating in high-temperature environments. Therefore, by monitoring and intelligently determining the current monitor status in real time, and adjusting the backlight brightness and controlling the lens reset based on the current monitor status, the irreversible damage and burn-in of the head-up display can be effectively prevented. This effectively avoids the situation where the PGU of the head-up display burns out and causes damage, thereby enhancing the durability of the monitor.

[0070] In one embodiment, in order to determine the current display status based on the protection level information, display temperature information, and display time information, and obtain the determination result, a determination device, such as a determination module, can be pre-set. The determination module searches for and reads the protection level information, display temperature information, and display time information, determines the current display status based on the protection level information, display temperature information, and display time information, obtains the determination result, and performs subsequent processing based on the determination result. The specific method of searching and reading is not limited, as long as it can achieve the acquisition of the protection level information, display temperature information, and display time information, such as a memory, processor, etc.

[0071] In practical implementation, the judgment device is in a normally closed state. If at a certain moment, after the judgment device obtains the protection level information, display temperature information and display time information, it judges the current display status based on the protection level information, display temperature information and display time information, obtains the judgment result, and performs subsequent processing based on the test result.

[0072] For ease of understanding, we will take obtaining the judgment result as an example. The information acquisition device is the information acquisition module, the storage device is the memory, and the judgment device is the judgment module.

[0073] The information acquisition module acquires the protection level information, display temperature information, and display time information and stores them in the memory. The judgment module judges the current display status based on the protection level information, display temperature information, and display time information, obtains the judgment result, and performs subsequent processing based on the judgment result.

[0074] Obtain a first preset temperature, such as 81 degrees; obtain a first preset time, such as 30 seconds; obtain display temperature information, such as 82 degrees; obtain display time information, such as 31 seconds. At this time, the display temperature information is greater than the first preset temperature threshold and the display time information exceeds the first preset time. The first judgment result determines that level one protection needs to be activated.

[0075] The system acquires a second preset temperature (e.g., 86 degrees Celsius), a second preset time (e.g., 30 seconds), a temperature after the first limit (e.g., 87 degrees Celsius), and a first limit time (e.g., 31 seconds). If the temperature after the first limit is greater than the second preset temperature threshold and the first limit time exceeds the second preset time, the second judgment result indicates that secondary protection needs to be activated. The system then acquires backlight limit information (e.g., backlight limit information is 40%), acquires a third preset temperature (e.g., 75 degrees Celsius), a third preset time (e.g., 2 minutes), a temperature after the first limit (e.g., 76 degrees Celsius), and a first limit time (e.g., 3 minutes). If the temperature after the first limit is greater than the third preset temperature threshold and the first limit time exceeds the third preset time, the second judgment result indicates that secondary protection needs to be activated.

[0076] The system retrieves the fourth preset temperature (e.g., 93 degrees Celsius), the fourth preset time (e.g., 30 seconds), the temperature after the second limit (e.g., 94 degrees Celsius), and the second limit time (e.g., 31 seconds). If the temperature after the second limit is greater than the fourth preset temperature threshold and the second limit time exceeds the fourth preset time, the third judgment result indicates that Level 3 protection needs to be activated. The system then retrieves backlight limit information (e.g., 10%), the fifth preset temperature (e.g., 75 degrees Celsius), the fifth preset time (e.g., 2 minutes), the temperature after the second limit (e.g., 77 degrees Celsius), and the second limit time (e.g., 3 minutes). If the temperature after the second limit is greater than the fifth preset temperature threshold and the second limit time exceeds the fifth preset time, the third judgment result indicates that Level 3 protection needs to be activated.

[0077] The system retrieves the sixth preset temperature (101 degrees Celsius), the sixth preset time (e.g., 1 second), the temperature after the third limit (e.g., 102 degrees Celsius), and the third limit time (e.g., 2 seconds). If the temperature after the third limit is greater than the sixth preset temperature threshold and the third limit time exceeds the sixth preset time, the fourth judgment determines that the backlight needs to be turned off and the lens reset. At this point, the system retrieves backlight limit information (e.g., 0%), retrieves the seventh preset temperature (e.g., 75 degrees Celsius), the seventh preset time (e.g., 2 minutes), the temperature after the third limit (e.g., 78 degrees Celsius), and the third limit time (e.g., 3 minutes). If the temperature after the third limit is greater than the seventh preset temperature threshold and the third limit time exceeds the seventh preset time, the fourth judgment determines that the backlight needs to be turned off and the lens reset.

[0078] Step S30: Control the backlight brightness and lens reset based on the judgment result.

[0079] It should be noted that the judgment result reflects the characteristics of the display's safe operating range.

[0080] It is understood that backlight brightness information can be obtained based on the judgment result. The backlight brightness information includes backlight recovery information and backlight limitation information. Based on the backlight brightness information, the backlight brightness and lens reset can be controlled, thereby dynamically adjusting to ensure that the head-up display will not be damaged due to overheating.

[0081] In one embodiment, in order to control the backlight brightness and lens reset based on the judgment result, a corresponding execution device, such as an execution module, can be pre-set to query and obtain the judgment result, and control the backlight brightness and lens reset based on the judgment result. The specific method of querying and obtaining is not limited, as long as the judgment result can be obtained, such as a control module, execution module, etc.

[0082] In practice, the actuator is normally closed. If the actuator obtains the judgment result at a certain moment, it controls the backlight brightness and lens reset based on the judgment result.

[0083] For ease of understanding, we will take obtaining the judgment result as an example. The information acquisition device is the information acquisition module, the storage device is the memory, and the execution device is the execution module.

[0084] The information acquisition module acquires the protection level information, display temperature information, and display time information and stores them in the memory. The judgment module judges the current display status based on the protection level information, display temperature information, and display time information, and obtains the judgment result. When the first judgment result is to restore normal brightness, or the second judgment result is to restore normal brightness, or the third judgment result is to restore normal brightness, or the fourth judgment result is to restore normal brightness, backlight recovery information is acquired. When the first judgment result is to activate level one protection, or the second judgment result is to activate level two protection, or the third judgment result is to activate level three protection, or the fourth judgment result is to turn off the backlight and reset the lens, backlight limitation information is acquired. Backlight brightness information is acquired based on the backlight recovery information and backlight limitation information. Backlight brightness and lens reset are controlled based on the backlight brightness information.

[0085] Based on the first embodiment of this application, in the second embodiment of this application, the same or similar content as the first embodiment can be referred to the above description, and will not be repeated hereafter.

[0086] In this embodiment, the display backlight control method includes steps S40 to S50: (Refer to...) Figure 4 , Figure 4 This is a flowchart illustrating the second embodiment of the display backlight control method of this application.

[0087] Step S40: Obtain backlight brightness information based on the judgment result;

[0088] It should be noted that the backlight brightness information includes backlight recovery information and backlight limitation information.

[0089] Understandably, the backlight brightness can be adjusted and the lens can be reset based on the backlight brightness information, effectively preventing irreversible damage to the head-up display and avoiding the situation where the head-up display PGU burns out, thereby enhancing the durability of the display.

[0090] In one embodiment, in order to obtain backlight brightness information based on the judgment result, a processing device, such as a processing module, can be pre-set. The processing module reads the judgment result, obtains the backlight brightness information based on the judgment result, and performs subsequent processing based on the backlight brightness information. The specific method of searching and reading is not limited, as long as it can read the judgment result, such as a memory, processor, etc.

[0091] In practice, the processing device is normally closed. If at a certain moment the processing device obtains the judgment result, it obtains the backlight brightness information based on the judgment result and performs subsequent processing based on the backlight brightness information.

[0092] For ease of understanding, we will take obtaining the judgment result as an example. The information acquisition device is the information acquisition module, the storage device is the memory, and the processing device is the processing module.

[0093] The information acquisition module acquires the protection level information, display temperature information, and display time information and stores them in the memory. The processing module determines the current display status based on the protection level information, display temperature information, and display time information, obtains the determination result, acquires the backlight brightness information based on the determination result, and performs subsequent processing based on the backlight brightness information.

[0094] The first judgment result determines that Level 1 protection needs to be activated, and backlight limit information is obtained, such as 70%. The second judgment result determines that Level 2 protection needs to be activated, and backlight limit information is obtained, such as 40%. The third judgment result determines that Level 3 protection needs to be activated, and backlight limit information is obtained, such as 10%. The fourth judgment result determines that the backlight needs to be turned off and the lens needs to be reset, and backlight limit information is obtained, such as 0%.

[0095] Step S50: Control the backlight brightness and lens reset based on the backlight brightness information.

[0096] It should be noted that the backlight brightness information reflects the characteristics of the temperature that controls the maximum brightness adjustment.

[0097] For ease of understanding, we will take the acquisition of backlight brightness information as an example. The information acquisition device is the information acquisition module, the storage device is the memory, and the processing device is the processing module.

[0098] The information acquisition module acquires the protection level information, display temperature information, and display time information and stores them in the memory. The processing module determines the current display status based on the protection level information, display temperature information, and display time information, obtains the determination result, acquires the backlight brightness information based on the determination result, and controls the backlight brightness and lens reset based on the backlight brightness information.

[0099] Based on the first and second embodiments of this application, in the third embodiment of this application, the contents that are the same as or similar to those in the first and second embodiments described above can be referred to the above description and will not be repeated hereafter.

[0100] In this embodiment, the display backlight control method includes steps S60 to S80: (Refer to...) Figure 5 , Figure 5 This is a flowchart illustrating the third embodiment of the display backlight control method of this application.

[0101] Step S60: When the first judgment result is that the brightness has been restored to normal, or the second judgment result is that the brightness has been restored to normal, or the third judgment result is that the brightness has been restored to normal, or the fourth judgment result is that the brightness has been restored to normal, backlight recovery information is obtained.

[0102] It should be noted that the backlight recovery information reflects the characteristic of the display temperature returning to normal and the restriction being lifted.

[0103] Understandably, if any judgment result indicates that the head-up display temperature has been effectively controlled, the brightness limit can be removed and the test can be repeated.

[0104] For ease of understanding, we will take obtaining the judgment result as an example. The information acquisition device is the information acquisition module, the storage device is the memory, and the processing device is the processing module.

[0105] The information acquisition module acquires the protection level information, display temperature information, and display time information and stores them in the memory. The processing module determines the current display status based on the protection level information, display temperature information, and display time information. When the first determination result is that the display has been restored to normal brightness, or the second determination result is that the display has been restored to normal brightness, or the third determination result is that the display has been restored to normal brightness, or the fourth determination result is that the display has been restored to normal brightness, the backlight recovery information is acquired, and subsequent processing is performed based on the backlight recovery information.

[0106] Get a preset temperature, such as 75 degrees, a preset time, such as 10 seconds, get the display temperature information, such as 70 degrees, and get the display time information, such as 15 seconds. At this time, the display temperature information is lower than the preset temperature threshold and the display time information exceeds the preset time. The first judgment result determines that normal brightness needs to be restored, and the backlight restoration information is to restore the backlight.

[0107] Get a preset temperature, such as 75 degrees, a preset time, such as 10 seconds, get the temperature after the first limit, such as 60 degrees, and get the first limit time, such as 18 seconds. At this time, the temperature after the first limit is lower than the preset temperature threshold and the first limit time exceeds the preset time. The second judgment result determines that normal brightness needs to be restored, and the backlight restoration information is to restore the backlight.

[0108] Get the preset temperature, such as 75 degrees, get the preset time, such as 10 seconds, get the temperature after the second limit, such as 58 degrees, get the second limit time, such as 13 seconds. At this time, the temperature after the second limit is lower than the preset temperature threshold and the second limit time exceeds the preset time. The third judgment result determines that the normal brightness needs to be restored, and the backlight restoration information is to restore the backlight.

[0109] Get a preset temperature, such as 75 degrees, a preset time, such as 10 seconds, get the temperature after the third limit, such as 63 degrees, and get the third limit time, such as 19 seconds. At this time, the temperature after the third limit is lower than the preset temperature threshold and the third limit time exceeds the preset time. The fourth judgment result determines that the normal brightness needs to be restored, and the backlight restoration information is to restore the backlight.

[0110] Step S70: When the first judgment result is that Level 1 protection needs to be activated, or the second judgment result is that Level 2 protection needs to be activated, or the third judgment result is that Level 3 protection needs to be activated, or the fourth judgment result is that the backlight needs to be turned off and the lens needs to be reset, backlight limitation information is obtained.

[0111] It should be noted that the backlight limiting information reflects the characteristic of brightness limitation due to abnormal display temperature.

[0112] For ease of understanding, we will take obtaining the judgment result as an example. The information acquisition device is the information acquisition module, the storage device is the memory, and the processing device is the processing module.

[0113] The information acquisition module acquires the protection level information, display temperature information, and display time information and stores them in the memory. The processing module determines the current display status based on the protection level information, display temperature information, and display time information. When the first determination result is that level one protection needs to be activated, or the second determination result is that level two protection needs to be activated, or the third determination result is that level three protection needs to be activated, or the fourth determination result is that the backlight needs to be turned off and the lens needs to be reset, the backlight limitation information is acquired, and subsequent processing is performed based on the backlight limitation information.

[0114] Step S80: Obtain backlight brightness information based on the backlight recovery information and backlight limitation information.

[0115] See Example 1.

[0116] Based on the first to third embodiments of this application, in the fourth embodiment of this application, the contents that are the same as or similar to those in the first to third embodiments described above can be referred to the above description and will not be repeated hereafter.

[0117] In this embodiment, the display backlight control method includes steps S90 to S100: (Refer to...) Figure 6 , Figure 6 This is a flowchart illustrating the fourth embodiment of the display backlight control method of this application.

[0118] Step S90: When the backlight brightness information is backlight recovery information, control the backlight brightness to recover to the initial value;

[0119] It is understood that the backlight recovery information includes the brightness setting when the display returns to normal operation and the optimal brightness level that is user-defined or preset by the system. When the judgment result determines that it is necessary to restore the normal brightness, the backlight brightness is gradually adjusted to the initial value or the user's preferred value.

[0120] For ease of understanding, we will take the acquisition of backlight brightness information as an example. The information acquisition device is the information acquisition module, the storage device is the memory, and the execution device is the execution module.

[0121] The information acquisition module acquires the backlight brightness information and stores it in the memory. The execution module reads the backlight brightness information. If the backlight brightness information is backlight recovery information, it controls the backlight brightness to gradually adjust to the initial value or the user's preferred value.

[0122] Step S100: When the backlight brightness information is backlight limit information, control the backlight brightness to the backlight brightness limit value and reset the lens.

[0123] It is understood that the backlight limiting information is a manually preset brightness limit value, used to protect the display from damage under high temperature or other adverse conditions. Different backlight brightness limit values ​​are set according to the protection level to ensure that the display can be effectively protected under different conditions.

[0124] Additionally, it should be noted that when the backlight needs to be turned off, the system will simultaneously trigger the lens reset mechanism to ensure that the lens moves to a safe position and avoids damage due to high temperature.

[0125] For ease of understanding, we will take the acquisition of backlight brightness information as an example. The information acquisition device is the information acquisition module, the storage device is the memory, and the execution device is the execution module.

[0126] The information acquisition module acquires the backlight brightness information and stores it in the memory. The execution module reads the backlight brightness information. If the backlight brightness information is backlight limit information, it controls the backlight brightness to the backlight brightness limit value and triggers the lens reset mechanism to ensure that the lens moves to a safe position and avoids damage due to high temperature.

[0127] For example, to help understand the implementation flow of the display backlight control method obtained by combining this embodiment with the above embodiment one, please refer to... Figure 7 , Figure 7 A simplified flowchart of a display backlight control method is provided, specifically:

[0128] Referring to Embodiment 1, protection level information, display temperature information, and display time information are obtained; the current display state is determined based on the protection level information, display temperature information, and display time information, and a determination result is obtained; the backlight brightness and lens reset are controlled based on the determination result. Referring to Embodiment 2, backlight brightness information is obtained based on the determination result; the backlight brightness and lens reset are controlled based on the backlight brightness information. Referring to Embodiment 3, when the first determination result is to restore normal brightness, or the second determination result is to restore normal brightness, or the third determination result is to restore normal brightness, or the fourth determination result is to restore normal brightness, backlight recovery information is obtained; when the first determination result is that level one protection needs to be activated, or the second determination result is that level two protection needs to be activated, or the third determination result is that level three protection needs to be activated, or the fourth determination result is that the backlight needs to be turned off and the lens reset is required, backlight limitation information is obtained; backlight brightness information is obtained based on the backlight recovery information and the backlight limitation information. When a temperature value continuously exceeds 81℃ for more than 30 seconds, the maximum backlight brightness is limited to 70%. If the temperature remains below 75℃ for 10 seconds, normal operation is restored. After the first-level protection, if a temperature exceeds 86℃ for more than 30 seconds or the temperature does not drop below 75℃ within 2 minutes, further protection is activated. Figure 2 Level 1 protection limits the maximum brightness to 40%; after entering Level 2 protection, if the temperature is detected to be continuously greater than 93℃ for more than 30 seconds or does not drop below 75℃ for more than 2 minutes, Level 3 protection limits the maximum brightness to 10%; if after entering Level 3 protection, the temperature is continuously greater than 101℃ for more than 1 second or does not drop below 75℃ for more than 2 minutes, the backlight is directly turned off and the lens is reset; see Example 4, when the backlight brightness information is backlight recovery information, the backlight brightness is controlled to recover to the initial value; when the backlight brightness information is backlight limitation information, the backlight brightness is controlled to the backlight brightness limitation value and the lens is reset.

[0129] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the display backlight control method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0130] This application also provides a display backlight control device, the display backlight control device comprising:

[0131] The acquisition module 10 is used to acquire protection level information, display temperature information, and display time information;

[0132] Processing module 20 is used to determine the current display status based on the protection level information, display temperature information and display time information, and obtain the determination result;

[0133] The execution module 30 is used to control the backlight brightness and lens reset based on the judgment result.

[0134] The display backlight control device provided in this application, employing the display backlight control method in the above embodiments, can solve the technical problem of how to automatically control the temperature of a display. Compared with the prior art, the beneficial effects of the display backlight control device provided in this application are the same as those of the display backlight control method provided in the above embodiments, and other technical features in the display backlight control device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0135] This application provides a display backlight control device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the display backlight control method in the first embodiment described above.

[0136] The following is for reference. Figure 8 The diagram illustrates a structural schematic of a display backlight control device suitable for implementing embodiments of this application. The display backlight control device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 8 The display backlight control device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0137] like Figure 9As shown, the display backlight control device may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the display backlight control device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. The communication device 1009 allows the display backlight control device to communicate wirelessly or wiredly with other devices to exchange data. Although the figures show display backlight control devices with various systems, it should be understood that implementation or possession of all the systems shown is not required. More or fewer systems may be implemented alternatively.

[0138] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0139] The display backlight control device provided in this application, employing the display backlight control method in the above embodiments, can solve the technical problem of how to automatically control the temperature of a display. Compared with the prior art, the beneficial effects of the display backlight control device provided in this application are the same as those of the display backlight control method provided in the above embodiments, and other technical features in this display backlight control device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0140] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0141] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0142] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the display backlight control method in the above embodiments.

[0143] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0144] The aforementioned computer-readable storage medium may be included in the display backlight control device; or it may exist independently and not assembled into the display backlight control device.

[0145] The aforementioned computer-readable storage medium carries one or more programs. When the aforementioned one or more programs are executed by the display backlight control device, the display backlight control device causes the display backlight control device to: acquire protection level information, display temperature information, and display time information; determine the current display state based on the protection level information, display temperature information, and display time information, and acquire the determination result; and control the backlight brightness and lens reset based on the determination result.

[0146] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0147] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0148] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0149] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described display backlight control method, thereby solving the technical problem of how to automatically control the temperature of a display. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the display backlight control method provided in the above embodiments, and will not be repeated here.

[0150] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the display backlight control method described above.

[0151] The computer program product provided in this application can solve the technical problem of how to automate the temperature control of a display. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the display backlight control method provided in the above embodiments, and will not be repeated here.

[0152] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A method for controlling the backlight of a display, characterized in that, The method includes: Obtain protection level information, monitor temperature information, and monitor time information; Based on the protection level information, display temperature information, and display time information, determine the current display status and obtain the determination result; Based on the judgment result, control the backlight brightness and lens reset; The step of determining the current display status based on the protection level information, display temperature information, and display time information, and obtaining the determination result, includes: If the display temperature information is greater than the first preset temperature threshold and the display time information exceeds the first preset time, the first judgment result determines that level one protection needs to be activated; otherwise, the first judgment result determines that normal brightness should be restored. If the temperature after the first limit is greater than the second preset temperature threshold and the first limit time exceeds the second preset time, or if the temperature after the first limit is greater than the third preset temperature threshold and the first limit time exceeds the third preset time, the second judgment result determines that the second-level protection needs to be activated; otherwise, the second judgment result determines that the normal brightness should be restored. If the temperature after the second restriction is greater than the fourth preset temperature threshold and the second restriction time exceeds the fourth preset time, or if the temperature after the second restriction is greater than the fifth preset temperature threshold and the second restriction time exceeds the fifth preset time, the third judgment result determines that the third-level protection needs to be activated; otherwise, the third judgment result determines that the normal brightness should be restored. If the temperature after the third restriction is greater than the sixth preset temperature threshold and the third restriction time exceeds the sixth preset time, or if the temperature after the third restriction is greater than the seventh preset temperature threshold and the third restriction time exceeds the seventh preset time, the fourth judgment result determines that the backlight needs to be turned off and the lens needs to be reset; otherwise, the fourth judgment result determines that the normal brightness needs to be restored. The judgment result is obtained based on the first judgment result, the second judgment result, the third judgment result, and the fourth judgment result.

2. The method as described in claim 1, characterized in that, Following the steps of obtaining protection level information, display temperature information, and display time information, the following is included: Obtain the thermocouple resistance value information, and determine the display temperature information based on the thermocouple resistance value information; The display time information is determined based on the cumulative duration of the display temperature information. Protection level information is obtained based on the display temperature information and display time information, which includes level one protection, level two protection, and level three protection.

3. The method as described in claim 1, characterized in that, The steps of controlling backlight brightness and lens repositioning based on the judgment result include: Based on the judgment result, obtain the backlight brightness information; The backlight brightness and lens reset are controlled based on the backlight brightness information.

4. The method as described in claim 3, characterized in that, The judgment results include a first judgment result, a second judgment result, a third judgment result, and a fourth judgment result. The step of obtaining backlight brightness information based on the judgment results includes: When the first judgment result is that the brightness has been restored to normal, or the second judgment result is that the brightness has been restored to normal, or the third judgment result is that the brightness has been restored to normal, or the fourth judgment result is that the brightness has been restored to normal, the backlight recovery information is obtained. When the first judgment result is that Level 1 protection needs to be activated, or the second judgment result is that Level 2 protection needs to be activated, or the third judgment result is that Level 3 protection needs to be activated, or the fourth judgment result is that the backlight needs to be turned off and the lens needs to be reset, backlight limitation information is obtained; Backlight brightness information is obtained based on the backlight recovery information and backlight limitation information.

5. The method as described in claim 3, characterized in that, The steps of controlling backlight brightness and lens reset based on the backlight brightness information include: When the backlight brightness information is backlight recovery information, control the backlight brightness to recover to the initial value; When the backlight brightness information is backlight limit information, the backlight brightness is controlled to the backlight brightness limit value and the lens is reset.

6. A display backlight control device, characterized in that, The device includes: The acquisition module is used to acquire protection level information, monitor temperature information, and monitor time information. The processing module is used to determine the current state of the display based on the protection level information, display temperature information, and display time information, and to obtain the determination result. The execution module is used to control the backlight brightness and lens reset based on the judgment result; The processing module is further configured to determine that if the display temperature information is greater than the first preset temperature threshold and the display time information exceeds the first preset time, the first judgment result determines that level one protection needs to be activated; otherwise, the first judgment result determines that normal brightness should be restored. If the temperature after the first limit is greater than the second preset temperature threshold and the first limit time exceeds the second preset time, or if the temperature after the first limit is greater than the third preset temperature threshold and the first limit time exceeds the third preset time, the second judgment result determines that the second-level protection needs to be activated; otherwise, the second judgment result determines that the normal brightness should be restored. If the temperature after the second restriction is greater than the fourth preset temperature threshold and the second restriction time exceeds the fourth preset time, or if the temperature after the second restriction is greater than the fifth preset temperature threshold and the second restriction time exceeds the fifth preset time, the third judgment result determines that the third-level protection needs to be activated; otherwise, the third judgment result determines that the normal brightness should be restored. If the temperature after the third restriction is greater than the sixth preset temperature threshold and the third restriction time exceeds the sixth preset time, or if the temperature after the third restriction is greater than the seventh preset temperature threshold and the third restriction time exceeds the seventh preset time, the fourth judgment result determines that the backlight needs to be turned off and the lens needs to be reset; otherwise, the fourth judgment result determines that the normal brightness needs to be restored. The judgment result is obtained based on the first judgment result, the second judgment result, the third judgment result, and the fourth judgment result.

7. A display backlight control device, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the display backlight control method as claimed in any one of claims 1 to 5.

8. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the display backlight control method as described in any one of claims 1 to 5.

9. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the steps of the display backlight control method as described in any one of claims 1 to 5.

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