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

Abstract

A display backlight control method, apparatus and device, and a storage medium and a program product. The display backlight control method comprises: acquiring protection level information, display temperature information, and display time information (S10); determining a current display state on the basis of the protection level information, the display temperature information, and the display time information, and acquiring a determination result (S20); and on the basis of the determination result, controlling a backlight brightness and a lens position (S30).

Description

Display backlight control method, device, equipment, storage medium and program product Cross-reference to related applications

[0001] This application claims priority to Chinese Patent Application No. 2024110306854, filed on July 30, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of vehicles, and in particular, to a display backlight control method, device, equipment, storage medium and program product. BACKGROUND

[0003] With the continuous development of social economy, display temperature control technology has also made rapid development. In order to improve the driver experience, the speed, navigation and other important driving information are projected onto the windshield in front of the driver by using the head-up display, so that the driver can see the speed, navigation and other important driving information without looking down or turning his head. However, the head-up display is arranged in the high-temperature area of the sun directly on the driver's side of the vehicle's interior instrument desk, which is easy to be damaged by high temperature. Therefore, temperature control of the head-up display is a necessary work.

[0004] In related technologies, the head-up display uses a TFT (Thin Film Transistor) screen as an image source. However, the maximum temperature that the TFT liquid crystal panel can withstand is 105°C. The head-up display image source part is not resistant to high temperature, is easy to appear irreversible damage and failure, and cannot be actively protected. Therefore, how to automatically control the temperature of the display is a technical problem to be solved.

[0005] The above content is only used to assist in understanding the technical solutions of the present disclosure and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0006] The main purpose of the present disclosure is to provide a display backlight control method, device, equipment, storage medium and program product, which aims to solve the technical problem of how to automatically control the temperature of the display.

[0007] In a first aspect, the present disclosure provides a display backlight control method, the method comprising: obtaining protection level information, display temperature information and display time information; determining the current display state based on the protection level information, display temperature information and display time information, and obtaining a determination result; controlling the backlight brightness and the lens reset based on the determination result.

[0008] In a second aspect, the present disclosure also provides a display backlight control apparatus, comprising: an obtaining module, configured to obtain protection level information, display temperature information and display time information; a processing module, configured to determine a current display state based on the protection level information, the display temperature information and the display time information, and obtain a determination result; and an executing module, configured to control backlight brightness and lens reset based on the determination result.

[0009] In a third aspect, the present disclosure also provides a display backlight control 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.

[0010] In a fourth aspect, the present disclosure also provides a storage medium, which is a computer-readable storage medium, and the storage medium stores a computer program, the computer program being executable by a processor to implement the steps of the display backlight control method as described above.

[0011] In a fifth aspect, the present disclosure also provides a computer program product, which comprises a computer program, the computer program being executable by a processor to implement the steps of the display backlight control method as described above. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the present disclosure.

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, those drawings can also provide other drawings for those skilled in the art without creative labor.

[0014] FIG. 1 is a flowchart of a display backlight control method according to some embodiments of the present disclosure;

[0015] FIG. 2 is a schematic diagram of an active over-temperature protection head-up display system according to some embodiments of the present disclosure;

[0016] FIG. 3 is a schematic diagram of a PGU according to some embodiments of the present disclosure;

[0017] FIG. 4 is a flowchart of a display backlight control method according to some other embodiments of the present disclosure;

[0018] FIG. 5 is a flowchart of a display backlight control method according to yet some other embodiments of the present disclosure;

[0019] FIG. 6 is a flowchart of a display backlight control method according to some embodiments of the present disclosure;

[0020] FIG. 7 is a flowchart of a display backlight control method according to some embodiments of the present disclosure;

[0021] FIG. 8 is a block diagram of a display backlight control apparatus according to some embodiments of the present disclosure; and

[0022] FIG. 9 is a device structure diagram of a hardware operating environment involved in a display backlight control method according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present disclosure, and are not intended to limit the present disclosure.

[0024] In order to better understand the technical solutions of the present disclosure, the following will be described in detail in combination with the accompanying drawings and specific embodiments.

[0025] The main solution of the embodiments of the present disclosure can be: obtaining protection level information, display temperature information and display time information; determining the current display state based on the protection level information, display temperature information and display time information, and obtaining a determination result; controlling the backlight brightness and lens reset based on the determination result.

[0026] In the present embodiment, for the convenience of description, the following describes the head-up display as the execution subject.

[0027] In the related art, TFT screen is used as the image source, however, the highest temperature that the liquid crystal panel of TFT can withstand is 105℃, the head-up display image source part is not resistant to high temperature, and is prone to irreversible damage and failure, and cannot be actively protected.

[0028] The present disclosure provides a solution, which obtains 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 a determination result; controls the backlight brightness and lens reset based on the determination result.

[0029] From the above embodiments, it can be seen that the present disclosure controls the backlight brightness and lens reset by obtaining the temperature and time information of the display and gradually limiting the backlight brightness according to the multi-level protection mechanism, thereby preventing the irreversible damage and burn-in of the head-up display, effectively avoiding the working condition of damage of the PGU (Picture Generation Unit) of the head-up display, and thereby enhancing the durability of the display.

[0030] Based on this, the display backlight control method provided by the embodiments of the present disclosure is provided. Referring to FIG. 1, FIG. 1 is a flowchart of the display backlight control method according to some embodiments of the present disclosure.

[0031] In the embodiments, the display backlight control method can include steps S10-S30.

[0032] In step S10, the protection level information, the display temperature information and the display time information can be acquired.

[0033] In some embodiments, the protection level information can reflect the feature of limiting the temperature of the head-up display, the display temperature information can reflect the feature of the current working temperature determined based on the resistance value of the thermocouple, and the display time information can reflect the feature of the duration of exceeding the preset temperature collected based on the display temperature.

[0034] In some embodiments, referring to FIG. 2, FIG. 2 is a composition diagram of the active over-temperature protection head-up display system according to some embodiments of the present disclosure. The image is generated from the PGU, irradiated onto the small mirror, reflected to the large free-form mirror through the small mirror, reflected to the front windshield by the large free-form mirror, and finally reflected into the human eye by the front windshield. Due to the reversibility of light, the external sunlight will also be reflected and irradiated on the PGU through this route, which will cause irreversible damage to the PGU due to the radiation of the sun.

[0035] In some embodiments, referring to FIG. 3, FIG. 3 is a PGU composition diagram according to some embodiments of the present disclosure. The LED lamp panel is the backlight source, and the light emitted by the LED lamp panel is further compressed and uniformized after passing through the reflection cavity and the Fresnel lens. In order to ensure that the virtual image meets the brightness requirement, the volume of the HUD is small enough, so the power consumption of the LED lamp bead will increase, which also causes the temperature of the PGU to increase. At this time, if the sunlight is irradiated on the TFT, it is easy to cause the TFT screen to burn out. At this time, in order to achieve active protection of the head-up display when it is over-temperature, multiple thermocouple resistors are added to the design of the PGU, which are attached to the upper surface of the TFT. The current working temperature is determined by confirming the resistance value of the thermocouple resistor, so as to realize the active self-protection of the head-up display system when it is over-temperature.

[0036] In an embodiment, in order to facilitate the acquisition of the protection level information, the display temperature information and the display time information, a corresponding information acquisition device, such as an information acquisition module, can be pre-set to acquire the protection level information, the display temperature information and the display time information, and store the protection level information, the display temperature information and the display time information in the corresponding storage device. The specific storage method is not limited, as long as it can store the protection level information, the display temperature information and the display time information, such as a storage module, a memory, etc.

[0037] In some embodiments, the information collection device is in a real-time working state or a timing working state, and the protection level information, the display temperature information and the display time information are acquired in real time or at a timing. If the information collection device collects the protection level information, the display temperature information and the display time information at a certain time, subsequent processing is performed based on the protection level information, the display temperature information and the display time information.

[0038] For the convenience of understanding, the acquisition of the protection level information, the display temperature information and the display time information is taken as an example for illustration.

[0039] In some embodiments, the information collection device can be an information collection module, and the storage device can be a memory.

[0040] In some embodiments, the information collection module can acquire the protection level information such as first-level protection, second-level protection and third-level protection, the display temperature information such as 81 degrees, 86 degrees, 93 degrees and 101 degrees, and the display time information such as 10 seconds and 2 minutes, and store the protection level information, the display temperature information and the display time information in the memory. Subsequent processing is performed based on the protection level information, the display temperature information and the display time information.

[0041] In step S20, the current display state is judged based on the protection level information, the display temperature information and the display time information, and a judgment result is obtained.

[0042] In some embodiments, since the display may be damaged when working in a high-temperature environment, the current display state is obtained by real-time monitoring and intelligent judgment, and the backlight brightness is adjusted and the lens is controlled to reset based on the current display state, which can effectively prevent the head-up display from being damaged and burned irreversibly, effectively avoid the working conditions that cause the head-up display PGU to be damaged and burned, and thus enhance the durability of the display.

[0043] In an embodiment, in order to judge the current display state based on the protection level information, the display temperature information and the display time information and obtain a judgment result, a judgment device such as a judgment module can be pre-set. The judgment module finds and reads the protection level information, the display temperature information and the display time information, judges the current display state based on the protection level information, the display temperature information and the display time information, obtains a judgment result, and performs subsequent processing based on the judgment result. The specific way of finding and reading is not limited as long as the protection level information, the display temperature information and the display time information can be obtained, such as a memory, a processor, etc.

[0044] In some embodiments, the judging device can be in a normally closed state. If the judging device obtains the protection level information, the display temperature information and the display time information at a certain time, judges the current display state based on the protection level information, the display temperature information and the display time information, obtains a judgment result, and performs subsequent processing based on the judgment result.

[0045] In some embodiments, the information collection device can be an information collection module, the storage device can be a memory, and the judging device can be a judging module, taking obtaining a judgment result as an example.

[0046] In some embodiments, the information collection module obtains the protection level information, the display temperature information and the display time information and stores them in the memory. The judging module judges the current display state based on the protection level information, the display temperature information and the display time information, obtains a judgment result, and performs subsequent processing based on the judgment result.

[0047] In some embodiments, a first preset temperature, such as 81 degrees, is obtained, a first preset time, such as 30 seconds, is obtained, a display temperature information, such as 82 degrees, is obtained, and a display time information, such as 31 seconds, is obtained. 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, and the first judgment result determines that level one protection needs to be started.

[0048] In some embodiments, a second preset temperature, such as 86 degrees, is obtained, a second preset time, such as 30 seconds, is obtained, a first limited temperature, such as 87 degrees, is obtained, a first limited time, such as 31 seconds, is obtained. At this time, the first limited temperature is greater than the second preset temperature threshold and the first limited time exceeds the second preset time, and the second judgment result determines that level two protection needs to be started. A backlight limiting information, such as a backlight limiting information of 40%, is obtained, a third preset temperature, such as 75 degrees, is obtained, a third preset time, such as 2 minutes, is obtained, a first limited temperature, such as 76 degrees, is obtained, and a first limited time, such as 3 minutes, is obtained. When the first limited temperature is greater than the third preset temperature threshold and the first limited time exceeds the third preset time, the second judgment result determines that level two protection needs to be started.

[0049] In some embodiments, the fourth preset temperature is 93 degrees, the fourth preset time is 30 seconds, the second limited temperature is 94 degrees, the second limited time is 31 seconds, the third determination result is that the third protection needs to be started, the backlight limiting information is 10%, the fifth preset temperature is 75 degrees, the fifth preset time is 2 minutes, the second limited temperature is 77 degrees, the second limited time is 3 minutes, the third determination result is that the third protection needs to be started.

[0050] In some embodiments, the sixth preset temperature is 101 degrees, the sixth preset time is 1 second, the third limited temperature is 102 degrees, the third limited time is 2 seconds, the fourth determination result is that the backlight needs to be turned off and the lens needs to be reset, the backlight limiting information is 0%, the seventh preset temperature is 75 degrees, the seventh preset time is 2 minutes, the third limited temperature is 78 degrees, the third limited time is 3 minutes, the fourth determination result is that the backlight needs to be turned off and the lens needs to be reset.

[0051] In some embodiments, the first protection is used to indicate that the first limitation is performed on the backlight intensity. The second protection is used to indicate that the second limitation is performed on the backlight intensity, and the second limitation is greater than the first limitation. The third protection is used to indicate that the third limitation is performed on the backlight intensity, and the third limitation is greater than the second limitation. The fourth protection is used to indicate that the fourth limitation is performed on the backlight intensity, and the fourth limitation is greater than the third limitation.

[0052] In step S30, the backlight brightness and the lens position are controlled based on the determination result. The lens position can include a lens reset position.

[0053] In some embodiments, the determination result reflects the characteristics of the safe working range of the display.

[0054] It can be understood that the backlight brightness information can be obtained based on the determination result, the backlight brightness information includes backlight recovery information and backlight limiting information, and the backlight brightness and the lens reset can be controlled based on the backlight brightness information, so as to dynamically adjust to ensure that the head-up display will not be damaged due to overheating.

[0055] In an embodiment, in order to control the backlight brightness and the 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 the lens reset based on the judgment result, wherein the specific manner of querying and obtaining is not limited as long as the judgment result can be obtained, such as a control module, an execution module, and the like.

[0056] In some embodiments, the execution device is in a normally closed state, and if the execution device obtains the judgment result at a certain moment, the backlight brightness and the lens reset are controlled based on the judgment result.

[0057] In some embodiments, the information collection device is an information collection module, the storage device is a storage, and the execution device is an execution module, which are described by taking the judgment result as an example.

[0058] In some embodiments, the information collection module obtains the protection level information, the display temperature information, and the display time information and stores them in the storage, the judgment module judges the current display state based on the protection level information, the display temperature information, and the display time information, obtains the judgment result, obtains the backlight recovery information when the first judgment result is to restore the normal brightness or the second judgment result is to restore the normal brightness or the third judgment result is to restore the normal brightness or the fourth judgment result is to restore the normal brightness, obtains the backlight limiting information when the first judgment result is to start the first-level protection or the second judgment result is to start the second-level protection or the third judgment result is to start the third-level protection or the fourth judgment result is to turn off the backlight and reset the lens, obtains the backlight brightness information based on the backlight recovery information and the backlight limiting information, and controls the backlight brightness and the lens reset based on the backlight brightness information.

[0059] Referring to the above embodiments of the present disclosure, in the current embodiment of the present disclosure, the same or similar contents as the above embodiments can be referred to the above description, and will not be described in detail hereinafter.

[0060] In some embodiments, the above display backlight control method includes steps S40-S50: referring to FIG. 4, which is a flowchart of a display backlight control method according to some embodiments of the present disclosure.

[0061] Step S40: obtaining the backlight brightness information based on the judgment result.

[0062] In some embodiments, the backlight brightness information includes backlight recovery information and backlight limiting information.

[0063] In some embodiments, the backlight brightness and the lens reset can be adjusted based on the backlight brightness information, effectively preventing the head-up display from being damaged irreparably, effectively avoiding the working conditions in which the head-up display PGU is damaged, thereby enhancing the durability of the display.

[0064] In an embodiment, in order to obtain the backlight brightness information based on the judgment result, a processing device, such as a processing module, can be pre-set, which reads the judgment result, obtains the backlight brightness information based on the judgment result, and performs subsequent processing based on the backlight brightness information, wherein the specific way of searching and reading is not limited as long as the judgment result can be read, such as a memory, a processor, etc.

[0065] In some embodiments, the processing device is in a normally closed state, and if the processing device obtains the judgment result at a certain time, the backlight brightness information is obtained based on the judgment result, and subsequent processing is performed based on the backlight brightness information.

[0066] For the convenience of understanding, the judgment result is taken as an example for illustration, wherein the information collection device is an information collection module, the storage device is a memory, and the processing device is a processing module.

[0067] In some embodiments, the information collection module obtains the protection level information, the display temperature information, and the display time information and stores them in the memory, the processing module judges the current display state based on the protection level information, the display temperature information, and the display time information, obtains the judgment result, obtains the backlight brightness information based on the judgment result, and performs subsequent processing based on the backlight brightness information.

[0068] According to some embodiments, the above-mentioned protection level information includes different protection levels of first protection, second protection, and third protection, and different protection levels have different restrictions on the backlight intensity of the head-up display.

[0069] In some embodiments, a first judgment result is obtained to determine whether the first protection needs to be started, and backlight restriction information is obtained, such as 70% backlight restriction information; a second judgment result is obtained to determine whether the second protection needs to be started, and backlight restriction information is obtained, such as 40% backlight restriction information; a third judgment result is obtained to determine whether the third protection needs to be started, and backlight restriction information is obtained, such as 10% backlight restriction information; and a fourth judgment result is obtained to determine whether the backlight needs to be turned off and the lens needs to be reset, and backlight restriction information is obtained, such as 0% backlight restriction information.

[0070] Step S50: Controlling the backlight brightness and the lens reset based on the backlight brightness information.

[0071] In some embodiments, the backlight brightness information reflects the characteristics of the maximum brightness adjustment temperature.

[0072] In some embodiments, the information collection device is an information collection module, the storage device is a memory, and the processing device is a processing module, and the method is described by taking the acquisition of the backlight brightness information as an example.

[0073] The information collection module acquires the protection level information, the display temperature information, and the display time information and stores them in the memory, the processing module judges the current display state based on the protection level information, the display temperature information, and the display time information, acquires a judgment result, acquires the backlight brightness information based on the judgment result, and controls the backlight brightness and the lens reset based on the backlight brightness information.

[0074] In the current embodiments of the present disclosure, the same or similar contents as the above embodiments can be referred to the above description, and will not be described in detail hereinafter.

[0075] In some embodiments, the display backlight control method described above includes steps S60-S80. Referring to FIG. 5, FIG. 5 is a flowchart of a display backlight control method according to some embodiments of the present disclosure.

[0076] In step S60, 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, the backlight restoration information is acquired.

[0077] In some embodiments, the backlight restoration information reflects the feature that the display temperature is restored to normal and the restriction is cancelled.

[0078] In some embodiments, any of the judgment results being to restore normal brightness indicates that the head-up display temperature is effectively controlled, and the brightness restriction is cancelled and re-detected.

[0079] In some embodiments, the information collection device is an information collection module, the storage device is a memory, and the processing device is a processing module, and the method is described by taking the acquisition of the judgment result as an example.

[0080] In some embodiments, the information collection module acquires the protection level information, the display temperature information, and the display time information and stores them in the memory, the processing module judges the current display state based on the protection level information, the display temperature information, and the display time information, acquires a judgment result, acquires the backlight brightness information based on the judgment result, and controls the backlight brightness and the lens reset based on the backlight brightness information.

[0081] In some embodiments, the preset temperature is 75 degrees, the preset time is 10 seconds, the display temperature information is 70 degrees, the display time information is 15 seconds, the display temperature information is lower than the preset temperature threshold and the display time information exceeds the preset time, the first determination result determines that the normal brightness needs to be restored, and the backlight recovery information is to restore the backlight.

[0082] In some embodiments, the preset temperature is 75 degrees, the preset time is 10 seconds, the first limited temperature is 60 degrees, the first limited time is 18 seconds, the first limited temperature is lower than the preset temperature threshold and the first limited time exceeds the preset time, the second determination result determines that the normal brightness needs to be restored, and the backlight recovery information is to restore the backlight.

[0083] In some embodiments, the preset temperature is 75 degrees, the preset time is 10 seconds, the second limited temperature is 58 degrees, the second limited time is 13 seconds, the second limited temperature is lower than the preset temperature threshold and the second limited time exceeds the preset time, the third determination result determines that the normal brightness needs to be restored, and the backlight recovery information is to restore the backlight.

[0084] In some embodiments, the preset temperature is 75 degrees, the preset time is 10 seconds, the third limited temperature is 63 degrees, the third limited time is 19 seconds, the third limited temperature is lower than the preset temperature threshold and the third limited time exceeds the preset time, the fourth determination result determines that the normal brightness needs to be restored, and the backlight recovery information is to restore the backlight.

[0085] Step S70, when the first determination result is to start the first level protection or the second determination result is to start the second level protection or the third determination result is to start the third level protection or the fourth determination result is to close the backlight and reset the lens, the backlight limiting information is obtained.

[0086] In some embodiments, the backlight limiting information reflects the characteristics of the display temperature abnormality for brightness limiting.

[0087] In some embodiments, the determination result is obtained, the information collection device is an information collection module, the storage device is a memory, and the processing device is a processing module.

[0088] In some embodiments, the information collection module acquires the protection level information, the display temperature information and the display time information and stores them in the memory, the processing module determines the current display state based on the protection level information, the display temperature information and the display time information, and acquires the backlight limiting information when the first determination result is that the first level protection needs to be started, or the second determination result is that the second level protection needs to be started, or the third determination result is that the third level protection needs to be started, or the fourth determination result is that the backlight needs to be turned off and the lens needs to be reset, and performs subsequent processing based on the backlight limiting information.

[0089] Step S80, the backlight brightness information is obtained based on the backlight recovery information and the backlight limiting information.

[0090] Referring to the above embodiments of the present disclosure, in the current embodiments of the present disclosure, the same or similar contents as the above embodiments can be referred to the above introduction, and will not be described in detail hereinafter.

[0091] In some embodiments, the display backlight control method comprises steps S90-S100: referring to FIG. 6, FIG. 6 is a flowchart of a display backlight control method according to some embodiments of the present disclosure.

[0092] Step S90, when the above backlight brightness information is the backlight recovery information, the initial value of the backlight brightness recovery is controlled;

[0093] In some embodiments, the above backlight recovery information includes the brightness setting when the display recovers to normal working and the optimal brightness level customized by the user or preset by the system, and when the determination result determines that the normal brightness needs to be recovered, the backlight brightness is gradually adjusted to the initial value or the user preference value.

[0094] For the convenience of understanding, the backlight brightness information is taken as an example for description, wherein the information collection device is the information collection module, the storage device is the memory, and the execution device is the execution module.

[0095] The information collection module acquires the backlight brightness information and stores it in the memory, and the execution module reads the backlight brightness information, and if the backlight brightness information is the backlight recovery information, the backlight brightness is gradually adjusted to the initial value or the user preference value.

[0096] Step S100, when the above backlight brightness information is the backlight limiting information, the backlight brightness is controlled to be the backlight brightness limiting value and the lens is reset.

[0097] In some embodiments, the above backlight limiting information is an artificially preset brightness limiting value, which is used to protect the display from being damaged under high temperature or other adverse conditions, different backlight brightness limiting values are set based on the protection level to ensure that the display can be effectively protected under different conditions.

[0098] In some embodiments, in the case of needing to turn off the backlight, the system will trigger the lens reset mechanism at the same time, ensuring that the lens moves to a safe position to avoid damage due to high temperature.

[0099] In some embodiments, taking the acquisition of backlight brightness information as an example, the information collection device is an information collection module, the storage device is a memory, and the execution device is an execution module.

[0100] In some embodiments, the information collection module acquires the backlight brightness information and stores it in the memory, and the execution module reads the backlight brightness information. If the backlight brightness information is backlight limit information, the backlight brightness is controlled to be the backlight brightness limit value, and the lens reset mechanism is triggered at the same time, ensuring that the lens moves to a safe position to avoid damage due to high temperature.

[0101] For example, to facilitate understanding of the implementation process of the display backlight control method obtained after combining the above-mentioned embodiment one, please refer to FIG. 7, which is a brief flowchart of a display backlight control method provided by some embodiments of the present disclosure, specifically:

[0102] In some embodiments, the protection level information, the display temperature information and the display time information are acquired; the current display state is determined based on the protection level information, the display temperature information and the display time information, and a determination result is acquired; the backlight brightness and the lens reset are controlled based on the determination result. Referring to Embodiment Two, the backlight brightness information is acquired based on the determination result; the backlight brightness and the lens reset are controlled based on the backlight brightness information. Referring to Embodiment Three, 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, the backlight restoration information is acquired; when the first determination result is to start first-level protection or the second determination result is to start second-level protection or the third determination result is to start third-level protection or the fourth determination result is to turn off the backlight and reset the lens, the backlight limiting information is acquired; the backlight brightness information is acquired based on the backlight restoration information and the backlight limiting information. When the temperature value is continuously greater than 81℃ and the duration is greater than 30S, the maximum brightness of the backlight is limited to 70%; if the temperature is lower than 75℃ for 10S, the normal state is restored; when the temperature is greater than 86℃ and the duration is greater than 30S or the temperature is not reduced to below 75℃ for 2min after the first-level protection, the maximum brightness is limited to 40% in the second-level protection; when the temperature is continuously greater than 93℃ and the duration is greater than 30S or the temperature is not reduced to below 75℃ for 2min after the second-level protection, the maximum brightness is limited to 10% in the third-level protection; if the temperature is continuously greater than 101℃ and the duration is greater than 1S or the temperature is not reduced to below 75℃ for 2min after the third-level protection, the backlight is directly turned off and the lens is reset; referring to Embodiment Four, when the backlight brightness information is the backlight restoration information, the initial value of the backlight brightness is controlled to be restored; when the backlight brightness information is the backlight limiting information, the backlight brightness is controlled to be the backlight brightness limiting value and the lens is reset.

[0103] In some embodiments, the above examples are only used for understanding the present disclosure and do not constitute a limitation on the display backlight control method of the present disclosure. More forms of simple transformation based on this technical concept are within the protection scope of the present disclosure.

[0104] The present disclosure also provides a display backlight control device, which comprises an acquisition module 10, a processing module 20 and an execution module 30.

[0105] The acquisition module 10 is used for acquiring protection level information, display temperature information and display time information. The processing module 20 is used for determining the current display state based on the protection level information, the display temperature information and the display time information, and acquiring a determination result. The execution module 30 is used for controlling the backlight brightness and the lens reset based on the determination result.

[0106] The display backlight control apparatus provided by the present disclosure adopts the display backlight control method in the above embodiments, and can solve the technical problem of how to automatically control the temperature of the display. Compared with the prior art, the display backlight control apparatus provided by the present disclosure has the same beneficial effects as the display backlight control method provided by the above embodiments, and other technical features of the display backlight control apparatus are the same as the features disclosed in the above embodiments, which will not be described here.

[0107] The present disclosure provides a display backlight control apparatus, which comprises at least one processor and a memory connected with 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 above embodiment one.

[0108] Referring to FIG. 8, FIG. 8 is a schematic diagram of a module structure of the display backlight control apparatus according to some embodiments of the present disclosure. The display backlight control apparatus in the embodiments of the present disclosure can include, but is not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), and vehicle terminals (such as vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. The display backlight control apparatus shown in FIG. 8 is only an example, and should not limit the functions and use range of the embodiments of the present disclosure.

[0109] As shown in FIG. 9, the display backlight control device can include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.) that can perform various appropriate actions and processes according to programs stored in a ROM (Read Only Memory) 1002 or programs loaded from a storage device 1003 into a RAM (Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the display backlight control device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; the storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the display backlight control device to communicate with other devices wirelessly or by wire to exchange data. Although the display backlight control device with various systems is shown in the figure, it should be understood that all the systems shown are not required to be implemented or possessed. More or fewer systems can be alternatively implemented or possessed.

[0110] According to embodiments of the present disclosure, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present disclosure 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 by a communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the methods of the embodiments of the present disclosure are performed.

[0111] The display backlight control device provided by the present disclosure adopts the display backlight control method in the above-mentioned embodiments, and can solve the technical problem of how to automatically control the temperature of the display. Compared with the prior art, the display backlight control device provided by the present disclosure has the same beneficial effects as the display backlight control method provided by the above-mentioned embodiments, and other technical features in the display backlight control device are the same as the features disclosed in the previous embodiment method, which will not be repeated here.

[0112] It should be understood that various aspects disclosed herein can be implemented in hardware, software, firmware, or a combination thereof. In the description of the embodiments above, specific features, structures, materials or characteristics can be combined in any suitable manner without necessarily being limited to one or more embodiments or examples.

[0113] The above description is merely illustrative of the disclosure and does not place restrictions on the protection scope of the disclosure. Any variations or replacements readily conceivable by any person skilled in the art within the technical scope disclosed by the disclosure shall be encompassed by the protection scope of the disclosure. Therefore, the protection scope of the disclosure shall be subject to that of the claims.

[0114] The disclosure provides a computer-readable storage medium having stored thereon computer-readable program instructions (i.e., a computer program) for performing the display backlight control method in the above-described embodiments.

[0115] The computer-readable storage medium provided by the disclosure may, for example, be a U disk, but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination thereof. More specific examples of the computer-readable storage medium can include, but are not limited to, an electrical connection having one or more conductive wires, a portable computer diskette, a hard disk, a RAM (Random Access Memory), a ROM (Read Only Memory), an EPROM (Erasable Programmable Read Only Memory or Flash memory), an optical fiber, a CD-ROM (CD-Read Only Memory), an optical storage device, a magnetic storage device, or any appropriate combination of the above. In this embodiment, the computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, system, or device. The program code contained in the computer-readable storage medium can be transmitted in any appropriate medium, including but not limited to a wire, an optical cable, an RF (Radio Frequency) cable, etc., or any appropriate combination of the above.

[0116] The above-described computer-readable storage medium can be included in the display backlight control device; or can exist separately without being assembled into the display backlight control device.

[0117] The computer readable storage medium described above carries one or more programs, when the one or more programs are executed by the display backlight control device, the display backlight control device is caused to: acquire protection level information, display temperature information and display time information; determine a current display state based on the protection level information, the display temperature information and the display time information, and acquire a determination result; and control backlight brightness and lens reset based on the determination result.

[0118] Computer program code for carrying out operations of the present disclosure can be written in one or more programming languages or combinations of languages including object oriented programming languages such as Java, Smalltalk, C++ or conventional procedural programming languages such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a LAN (Local Area Network) or a WAN (Wide Area Network), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0119] The flow diagrams and the block diagrams in the drawings are illustrations of possible architectures, functions, and operations of systems, methods, and computer program products in accordance with various embodiments of the present disclosure. In this regard, each block in the flow diagrams or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks maysometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flow diagrams, and combinations thereof, can be implemented by special purpose hardware-based systems that perform the specified functions or operations, or combinations of special purpose hardware and computer instructions.

[0120] The modules involved in the embodiments of the present disclosure can be implemented in the form of software or in the form of hardware. In some cases, the name of the module does not constitute a limitation on the module itself.

[0121] The readable storage medium provided by the present disclosure is a computer readable storage medium, which stores computer readable program instructions (i.e. computer program) for executing the display backlight control method described above, and can solve the technical problem of how to automatically control the temperature of the display. Compared with the prior art, the computer readable storage medium provided by the present disclosure has the same beneficial effects as the display backlight control method provided by the above-mentioned embodiments, and will not be described here.

[0122] The present disclosure also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the display backlight control method as described above.

[0123] The computer program product provided by the present disclosure can solve the technical problem of how to automatically control the temperature of the display. Compared with the prior art, the computer program product provided by the present disclosure has the same beneficial effects as the display backlight control method provided by the above-mentioned embodiments, and will not be described here.

[0124] The above-mentioned is only part of the embodiments of the present disclosure, and does not limit the patent scope of the present disclosure, and any equivalent structural transformation made by using the content of the present disclosure specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present disclosure.

Claims

1. A display backlight control method for head-up display, comprising: Obtain protection level information, monitor temperature information, and monitor time information; Based on the protection level information, display temperature information, and display time information, the current display status is determined, and a determination result is obtained; as well as The backlight brightness and / or lens position are controlled based on the judgment result.

2. The method as described in claim 1, wherein, Controlling the lens position based on the judgment result includes: Based on the judgment result, the lens position is controlled to the reset position.

3. The method as described in claim 1, wherein, The protection level information is used to reflect the limitation level of the head-up display temperature.

4. The method of claim 1, wherein, The display temperature information is used to reflect the characteristics of the display's current operating temperature, which is determined based on the thermocouple resistance value.

5. The method of claim 1, wherein, The display time information is used to reflect the duration of time that the temperature exceeds the preset temperature, based on the display temperature data.

6. The method of claim 1, wherein, The acquisition of protection level information, display temperature information, and display time information includes: 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.

7. The method according to any one of claims 1 to 6, wherein, The protection level information includes Level 1 protection, Level 2 protection, and Level 3 protection. Different protection levels impose different restrictions on the backlight brightness of the head-up display.

8. The method of claim 7, wherein, The next protection level is triggered when the display temperature fails to drop to the ideal temperature after the previous protection level has limited the backlight brightness.

9. The method as described in any one of claims 1 to 8, wherein, 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. The level one protection is used to indicate that the backlight brightness is subject to a first limit.

10. The method of claim 9, wherein, 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 after the first restriction is greater than the second preset temperature threshold and the first restriction time exceeds the second 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. The secondary protection is used to indicate a second restriction on the backlight brightness, and the second restriction on the backlight brightness is greater than the first restriction.

11. The method of claim 10, wherein, 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 after the second restriction is greater than the fourth preset temperature threshold and the second restriction time exceeds the fourth 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. The third-level protection is used to indicate the third restriction on the backlight brightness, and the third restriction on the backlight brightness is greater than the second restriction.

12. The method of claim 11, wherein, 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 after the third restriction is greater than the sixth preset temperature threshold and the third restriction time exceeds the sixth 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 should be restored. The fourth level of protection is used to indicate that the backlight brightness is subject to a fourth restriction, and the fourth restriction on the backlight brightness is greater than the third restriction.

13. The method of claim 1, wherein, The control of backlight brightness and lens position based on the judgment result includes: Based on the judgment result, obtain the backlight brightness information; The backlight brightness and lens position are controlled based on the backlight brightness information.

14. The method as described in claim 13, characterized in that, The step of obtaining backlight brightness information based on the judgment result includes: When the judgment result is that the brightness has been restored to normal, obtain the backlight recovery information; Backlight brightness information is obtained based on the backlight recovery information and backlight limitation information.

15. The method as described in claim 13, characterized in that, The step of obtaining backlight brightness information based on the judgment result includes: When the determination result indicates that protection needs to be activated, obtain backlight limitation information; Backlight brightness information is obtained based on the backlight limitation information.

16. The method as described in claim 12, characterized in that, The control of backlight brightness based on the backlight brightness information includes: When the backlight brightness information is backlight recovery information, control the backlight brightness to recover to the initial value.

17. The method as described in claim 12, characterized in that, The control of backlight brightness and lens position based on the backlight brightness information includes: When the backlight brightness information is backlight limit information, the backlight brightness is controlled to the backlight brightness limit value and the lens is controlled to reset.

18. A display backlight control device for head-up display, comprising: 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; as well as An execution module is used to control the backlight brightness and / or lens position based on the judgment result.

19. A display backlight control 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 claimed in any one of claims 1 to 17.

20. A storage medium comprising a computer program stored thereon, which, when executed by a processor, implements the steps of the display backlight control method as claimed in any one of claims 1 to 17.

21. A computer program product comprising 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 17.

Images