Brightness adjusting method and device for vehicle-mounted display screen, controller and vehicle

Abstract

The invention relates to a brightness adjusting method and device of a vehicle-mounted display screen, a controller and a vehicle, and is applied to vehicle control. The method comprises the steps that a controller can obtain the environment brightness at the current moment through a sensor arranged on a vehicle; the controller can also determine the first environment brightness according to the environment brightness when the user manually adjusts the screen brightness of the vehicle-mounted display screen last time. The controller can also compare the current ambient brightness with the stored first ambient brightness after acquiring the current ambient brightness. If the current environment brightness is not matched with the first environment brightness, the controller needs to be switched to an automatic adjustment state of the screen brightness, and automatic adjustment of the screen brightness is achieved. According to the invention, the screen brightness adjustment accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a brightness adjustment method, device, controller and vehicle for a vehicle-mounted display screen. Background Art

[0002] With the development of vehicle intelligence, the frequency of use of vehicle-mounted display screens is increasing. During driving, the external light may be greatly increased, thereby affecting the user's experience when viewing the vehicle-mounted display screen. To this end, the prior art proposes a method for sensing external light based on a rain light sensor to obtain the external light intensity, and then adaptively adjusting the vehicle-mounted display screen according to the external light intensity. However, the light adjustment method implemented based on the rain light sensor has the problem of poor adjustment effect. Summary of the invention

[0003] The technical solution of the present invention provides a method, device, controller and vehicle for adjusting the brightness of a vehicle-mounted display screen, so as to improve the adjustment effect of the screen brightness of the vehicle-mounted screen.

[0004] In a first aspect, the technical solution of the present invention provides a method for adjusting the brightness of a vehicle-mounted display screen, including: (characteristic part).

[0005] Get the current ambient brightness at the current moment;

[0006] If it is determined that the current ambient brightness does not match the first ambient brightness, adaptively adjusting the brightness of the vehicle display screen;

[0007] The first ambient brightness is determined according to the ambient brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen.

[0008] In a second aspect, the technical solution of the present invention provides a brightness adjustment device for a vehicle-mounted display screen, including: (characteristic part).

[0009] The acquisition module is used to obtain the current ambient brightness at the current moment;

[0010] An adjustment module, configured to adaptively adjust the brightness of the vehicle display screen when it is determined that the current ambient brightness does not match the first ambient brightness;

[0011] The first ambient brightness is determined according to the ambient brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen.

[0012] In a third aspect, the technical solution of the present invention provides a controller, including: a memory, a processor;

[0013] The memory stores computer-executable instructions;

[0014] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0015] In a fourth aspect, the technical solution of the present invention provides a computer-readable storage medium, in which computer execution instructions are stored. When the computer execution instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementation methods of the first aspect.

[0016] In a fifth aspect, the technical solution of the present invention provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementation methods of the first aspect.

[0017] Beneficial effects of the present invention:

[0018] The technical solution of the present invention provides a method, device, controller and vehicle for adjusting the brightness of a vehicle-mounted display screen. The method obtains the ambient brightness at the current moment through a sensor arranged on the vehicle; determines the first ambient brightness according to the ambient brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen; after obtaining the current ambient brightness, compares the current ambient brightness with the stored first ambient brightness; if the current ambient brightness does not match the first ambient brightness, switches to an automatic adjustment state of the screen brightness to achieve a means of automatically adjusting the screen brightness, thereby achieving the first ambient brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen, and determining the timing of switching to automatic adjustment during the screen brightness adjustment process, thereby achieving the effect of improving the accuracy of screen brightness adjustment and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a process flow of a method for adjusting the brightness of a vehicle display screen provided by the present invention;

[0020] Figure 2 A schematic diagram of the system architecture for adjusting the brightness of a vehicle display screen provided by the present invention;

[0021] Figure 3 A schematic diagram of signal transmission for brightness adjustment of a vehicle-mounted display screen provided by the present invention;

[0022] Figure 4 Schematic diagram of a slide bar for adjusting the brightness of a vehicle display screen provided by the present invention Figure 1 ;

[0023] Figure 5 Schematic diagram of a slide bar for adjusting the brightness of a vehicle display screen provided by the present invention Figure 2 ;

[0024] Figure 6 A schematic diagram of a process for adaptive brightness adjustment of a vehicle-mounted display screen provided by the present invention;

[0025] Figure 7 A schematic diagram of the structure of the brightness adjustment device for the vehicle-mounted display screen provided by the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the controller provided by the present invention. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0028] With the development of vehicle intelligence, the frequency of use of in-vehicle display screens is increasing. During driving, the external light may be greatly increased, which in turn affects the user experience when viewing the in-vehicle display screen. However, during driving, for safety reasons, the driver is usually unable to actively adjust the screen brightness of the in-vehicle display screen. Therefore, adaptive adjustment of the screen brightness of the in-vehicle display screen can effectively improve the user experience.

[0029] At present, the adaptive screen brightness adjustment can only be based on the rain light sensor to sense the external light and obtain the ambient light signal. The vehicle controller can adjust the screen brightness of the vehicle display screen according to the ambient light signal. However, since the rain light sensor is located on the top of the vehicle body and the vehicle display screen is inside the cockpit, there is a large difference between the ambient light felt by the rain light sensor and the actual ambient light of the vehicle display screen. In addition, the brightness sensing of the rain light sensor is not obvious in a darker environment, while the environment where the vehicle display screen is located will be affected by light sources such as the instrument screen and the vehicle display screen, resulting in a further increase in the gap between the ambient light felt by the rain light sensor and the actual ambient light of the vehicle display screen. The controller for adjusting the screen brightness of the vehicle display screen can be a vehicle computer. During the adjustment process, the vehicle computer will have a dimming delay. The existence of the above problems leads to the problem of poor adaptive adjustment effect of the screen brightness of the vehicle display screen in the prior art.

[0030] In order to solve the above problems, a method is proposed to obtain the environmental parameters of the ambient light around the display screen by means of a sensor installed on the display screen inside the vehicle. The controller can achieve the effect of adaptively adjusting the display parameters of the corresponding display screen inside the vehicle based on the obtained environmental parameters of the ambient light by matching the environmental parameters of the ambient light with the display parameters of the display screen inside the vehicle. However, the adaptive adjustment process of this method is only set based on the corresponding relationship between the environmental parameters of the ambient light and the screen brightness preset by the program, and there may be a problem of poor user experience for the differentiated requirements of different users.

[0031] In response to this problem, the present invention proposes a method for adjusting the brightness of a vehicle-mounted display screen. The method can generate a user's personalized parameters based on the ambient brightness and screen brightness when the user manually adjusts the brightness, and then according to the personalized parameters, realize adaptive adjustment of the screen brightness of the vehicle-mounted display screen. In this process, the user's personalized settings are added, and the user experience is improved. In addition, in terms of hardware settings, the present invention also adds information from an external camera on the basis of using the built-in sensor on the display screen, realizes adaptive brightness adjustment based on the sensor information of the built-in sensor on the display screen and the information of the external camera, and further improves the accuracy of brightness adjustment.

[0032] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0033] Figure 1 A schematic diagram of the process of adjusting the brightness of a vehicle display screen provided by the present invention is shown in FIG. Figure 1 As shown, the controller is used as the execution subject. The controller can be a master controller in the vehicle, or the controller can also be a controller in the vehicle specifically used to control the vehicle-mounted display screen. The method includes:

[0034] S101. Obtain the current ambient brightness at the current moment.

[0035] In this embodiment, the controller can obtain the current ambient brightness through a sensor disposed on the vehicle. Optionally, the sensor can be a light sensor disposed on a display screen of the vehicle. Optionally, the controller can obtain the current ambient brightness uploaded by the sensor in real time. Alternatively, the controller can periodically obtain the current ambient brightness from the sensor according to a preset frequency.

[0036] S102: If it is determined that the current environment brightness does not match the first environment brightness, adaptively adjust the brightness of the vehicle display screen, wherein the first environment brightness is determined according to the environment brightness when the user last manually adjusted the screen brightness of the vehicle display screen.

[0037] In this embodiment, the controller can also determine the first ambient brightness based on the ambient brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen. Optionally, the most recent manual adjustment can be the most recent manual adjustment made by the user during the current driving process. Alternatively, the most recent manual adjustment can be the last manual adjustment made by the user during the previous driving process. The controller can record the first ambient brightness. When the user manually adjusts the screen brightness again, the controller can determine a new first ambient brightness based on the ambient brightness during this adjustment process, and use the new first ambient brightness to replace the originally stored first ambient brightness.

[0038] In one example, during the last manual adjustment of the screen brightness of the vehicle-mounted display screen by the user, the process of determining the first ambient brightness according to the ambient brightness by the controller may include:

[0039] Step 1: Obtain the second ambient brightness within a first preset time period before the manual adjustment operation ends.

[0040] In this step, the controller can obtain and record the second ambient brightness in real time according to the first preset time during the manual adjustment operation. When the controller determines that the user ends the manual adjustment operation, the controller can finally obtain the second ambient brightness within the first preset time. Optionally, the first preset time can be 2 seconds, 3 seconds, etc.

[0041] Step 2: Determine the first environment brightness according to the average value of the second environment brightness within the first preset time period.

[0042] In this step, the controller can calculate the average value of the second ambient brightness within the first preset time length to obtain the first ambient brightness. The calculation of the first ambient brightness can obtain the average ambient brightness when the user manually adjusts the screen brightness, avoiding the influence of too large or too small singular values ​​on it, and further improving the effectiveness of the first ambient brightness when it is used as a reference value for comparison.

[0043] In this embodiment, after obtaining the current ambient brightness, the controller may also use the current ambient brightness to compare with the stored first ambient brightness. If the current ambient brightness does not match the first ambient brightness, it means that the screen brightness is no longer comfortable for the user under the current ambient brightness. At this time, the controller needs to switch to the adaptive adjustment state of the screen brightness to achieve adaptive adjustment of the screen brightness. Otherwise, if the current ambient brightness matches the first ambient brightness, it means that the screen brightness is within the user's comfortable range under the current ambient brightness and there is no need to adjust the screen brightness. When determining that the screen brightness needs to be adjusted, the controller can use an adaptive brightness adjustment strategy to adjust the screen brightness of the vehicle-mounted display.

[0044] In one example, the specific process of the controller matching the current environment brightness with the first brightness may include:

[0045] Step 1: Determine a brightness threshold range corresponding to the first ambient brightness according to the first ambient brightness and a preset coefficient.

[0046] In this step, a preset coefficient may be set in the controller. The controller may calculate an upper limit brightness and / or a lower limit brightness according to the first ambient brightness and the preset coefficient. The controller may determine a brightness threshold range according to the upper limit brightness and / or the lower limit brightness. When only the upper limit brightness is included, the upper limit brightness and the first ambient brightness may constitute a brightness threshold range. For another example, when the upper limit brightness and the lower limit brightness are included, the upper limit brightness and the lower limit brightness constitute the brightness threshold range. For example, the preset coefficient may be 0.1, 0.15, 0.2, etc. Optionally, different preset coefficients may be set in the controller for the upper limit and the lower limit, respectively.

[0047] Step 2: If the current environment brightness is not within the brightness threshold range, it is determined that the current environment brightness does not match the first brightness.

[0048] In this step, the controller can determine whether the current environment brightness is within the brightness threshold range. If the current environment brightness is within the brightness threshold range, the controller can determine that the current environment brightness matches the first brightness. Otherwise, the controller can determine that the current environment brightness does not match the first brightness.

[0049] In one example, when the controller determines that the current ambient brightness does not match the first brightness, the process of the controller adaptively adjusting the brightness of the vehicle display screen may include:

[0050] Step 1: Determine the target screen brightness according to the current environment brightness and the adjustment parameter, wherein the adjustment parameter is determined according to the first environment brightness and the screen brightness when the user last manually adjusted the screen brightness of the vehicle display screen.

[0051] In this step, the controller can also determine the adjustment parameter according to the first environment brightness and the screen brightness when the user last manually adjusted the screen brightness of the vehicle display screen. The adjustment parameter is the user's personalized adjustment parameter. The use of the adjustment parameter can be based on the common screen brightness adaptive adjustment strategy, and can be personalized based on the user's personal needs for screen brightness, thereby optimizing the user experience.

[0052] Specifically, the specific process of determining the adjustment parameter based on the first ambient brightness and the screen brightness when the user last manually adjusted the screen brightness of the vehicle display screen may include: the controller obtains the first screen brightness of the vehicle display screen when the manual adjustment ends. The controller determines the theoretical screen brightness when the adaptive brightness adjustment is performed based on the first ambient brightness. The controller determines the adjustment parameter based on the difference between the theoretical screen brightness and the first screen brightness.

[0053] Specifically, the controller can obtain the first screen brightness calculated according to the second ambient brightness in the manual adjustment process when the manual adjustment ends. The controller can calculate the screen brightness that needs to be adjusted according to the first ambient brightness using the adaptive brightness adjustment strategy. The screen brightness is the theoretical screen brightness. The controller can calculate the difference between the theoretical screen brightness and the first screen brightness. The difference is the adjustment parameter. If the difference is positive, it means that the user prefers a darker screen brightness compared to the adaptive brightness adjustment strategy. If the difference is negative, it means that the user prefers a brighter screen brightness compared to the adaptive brightness adjustment strategy.

[0054] Specifically, the process of the controller calculating the target screen brightness according to the current ambient brightness and the adjustment parameter may include: the controller determines the theoretical screen brightness when performing adaptive brightness adjustment according to the current ambient brightness. The controller determines the target screen brightness according to the difference between the theoretical screen brightness and the adjustment parameter.

[0055] Specifically, after obtaining the current ambient brightness, the controller can use a preset adaptive brightness adjustment strategy to calculate the screen brightness that may be adjusted during adaptive adjustment. This screen brightness is the theoretical screen brightness. The controller can calculate the difference between the theoretical screen brightness and the adjustment parameter to obtain the target screen brightness. When the adjustment parameter is a positive number, it means that the theoretical screen brightness is greater than the first screen brightness. That is, the actual user likes a darker screen brightness. At this time, the controller can use the theoretical screen brightness to subtract the adjustment parameter to obtain the final target screen brightness. When the adjustment parameter is a negative number, it means that the theoretical screen brightness is less than the first screen brightness. That is, the actual user likes a brighter screen brightness. At this time, the controller can use the theoretical screen brightness to subtract the adjustment parameter to obtain the final target screen brightness.

[0056] Optionally, after calculating the target screen brightness, the controller obtains scene information through a sensor disposed outside the vehicle. The controller may optimize the target screen brightness according to different scenes. The specific process may include: the controller selects at least one vehicle parameter from the vehicle parameters of the vehicle as the target vehicle parameter according to the scene information of the scene in which the vehicle is located. The controller determines the optimization coefficient of the screen brightness according to the target vehicle parameter. The controller optimizes the target screen brightness according to the optimization coefficient of the screen brightness.

[0057] Specifically, the controller obtains external information of the vehicle based on a sensor disposed outside the vehicle. The controller may use a preset recognition algorithm to identify the external information, determine the corresponding scene, and then obtain scene information. The controller may determine the corresponding target vehicle parameters to be used based on the scene information. Different scenes may correspond to different target vehicle parameters. The controller may determine the usage of the target vehicle parameters based on the scene information. The controller may calculate the optimization coefficient of the screen brightness based on the usage and the target vehicle parameters. The controller may use the optimization coefficient to optimize the target screen brightness.

[0058] For example, in special circumstances of dark environments, the controller of the vehicle display and the vehicle computer can process the ambient light intensity collected by the brightness sensor and the ambient light intensity collected by the camera installed outside the vehicle respectively, and combine the analysis to obtain better processing results.

[0059] Step 2: Adjust the screen brightness of the vehicle display to the target screen brightness.

[0060] In this step, the controller can adjust the screen brightness of the vehicle's on-board display screen according to the target screen brightness finally calculated so that it reaches the target screen brightness.

[0061] In the brightness adjustment method for a vehicle display screen provided in this embodiment, the controller can obtain the ambient brightness at the current moment through a sensor arranged on the vehicle. The controller can also determine the first ambient brightness based on the ambient brightness when the user last manually adjusted the screen brightness of the vehicle display screen. The controller can also use the current ambient brightness to compare with the stored first ambient brightness after obtaining the current ambient brightness. The current ambient brightness does not match the first ambient brightness, and the controller needs to switch to an adaptive adjustment state of the screen brightness to achieve adaptive adjustment of the screen brightness. The present invention obtains the first ambient brightness when the user last manually adjusted the screen brightness of the vehicle display screen, and determines the timing of switching to adaptive adjustment during the screen brightness adjustment process, thereby achieving the effect of improving the accuracy of screen brightness adjustment and improving user experience.

[0062] Based on the above embodiment, the controller can adjust the screen brightness of other display screens on the vehicle according to the screen brightness of the vehicle display after completing the adaptive adjustment of the screen brightness. This adaptive adjustment can reduce the computing power required for other vehicle screens to recalculate the target screen brightness during the adaptive brightness adjustment process, thereby improving the utilization rate of the vehicle's computing power and improving the adjustment efficiency of other vehicle screens.

[0063] Specifically, based on Figure 2 The system architecture shown. The controller of the vehicle display screen serves as the main controller for adjusting the screen brightness, and the vehicle computer serves as the slave controller for adjusting the screen brightness of the vehicle. The controller of the display screen can be responsible for controlling the brightness adjustment of the display screen. The vehicle computer can be responsible for adjusting the brightness of other vehicle display screens such as the electronic rearview mirror and the body controller control member. Optionally, a sensor can be installed on the vehicle display screen.

[0064] Optionally, the adaptive brightness adjustment set on the vehicle computer usually includes two states: on and off. The vehicle display screen usually includes two dimming modes: manual dimming and adaptive dimming. In different dimming modes, the master and slave controllers responsible for controlling the dimming level are different. The brightness adjustment modes of the electronic rearview mirror, the lights of the body controller control parts, and other vehicle display screens can all be determined according to the adaptive adjustment switch of the vehicle display screen.

[0065] On the basis of the above embodiments, when the vehicle display screen performs adaptive brightness adjustment, the vehicle display screen can refer to the brightness level comparison table to determine the adjusted target screen brightness according to the ambient brightness transmitted by the sensor. Among them, the brightness level comparison table is used to indicate the correspondence between the brightness level of the interface, the ambient brightness collected by the sensor, and the screen brightness of the vehicle computer. The brightness level comparison table can divide the brightness level of the interface into 1000 levels according to the accuracy, which corresponds to the display screen brightness of the vehicle computer, and realizes thousand-level dimming. In the actual implementation process, due to the differences in the display screen layout of each vehicle model, the ambient light received by the sensor on the vehicle display screen is also different. Therefore, the breadth level comparison table usually needs to be experimentally calibrated according to different vehicle models.

[0066] Optionally, after the adjustment is completed, the vehicle display screen can transmit the information to the host. The host determines the brightness level of the interface according to the screen brightness of the vehicle display screen. The host can transmit the level signal of the adjusted interface brightness level to the electronic rearview mirror and the body controller, so that the electronic rearview mirror and the body controller control parts can also perform corresponding adaptive brightness adjustment.

[0067] Based on the above embodiments, Figure 3The figure shows the hard connection and signal transmission process of the brightness adjustment process of the vehicle display. Among them, 8676 is the control chip set in the vehicle computer, MCU is the microcontroller, and the serializer and deserializer are set on the vehicle computer and the display screen respectively to realize the signal transmission between the vehicle interface and the display screen. The backlight IC in the display screen is a driver chip used to adjust the screen brightness. Figure 3 As shown, in the prior art, the communication link of the dimming process needs to include five processes 1, 2, 3, 4, and 5. Moreover, in the prior art, each additional screen requires two additional input / output interfaces of the microcontroller. The implementation of this solution is different from the traditional dimming link. The manual dimming process only needs to go through four processes 6, 7, 8, and 5, and the adaptive dimming only needs one process 5. The implementation of the present invention saves the input / output interface, so that the expansion of the display screen is no longer restricted by the input / output interface. The removal of this restriction enables multi-screen applications. Dimming can be achieved between the car computer and the display screen in the form of reused I2C protocol software, which is conducive to the implementation of platform promotion and saves costs.

[0068] Specifically, the present invention no longer needs to use a microcontroller to adjust the screen brightness and UI level after receiving the signal from the rain light sensor through the car computer. Instead, the I2C data of the ambient light can be directly transmitted to the microcontroller of the display screen, and the brightness change of the display screen can be driven by the backlight IC. The microcontroller of the display screen can also transmit the brightness adjustment result to the system chip of the host, and the system chip can adjust the brightness level of the interface according to the adjusted brightness. In this solution, the newly added I2C protocol content may include a controller for the control switch of the adaptive dimming path. The controller can obtain the light sensor value and brightness level and feed back to the upper-level application.

[0069] In bright environments, the brightness of the instrument display and the car display does not have much impact on the sensor. However, in dark environments, the light from the display may affect the sensor's sensing of ambient light, resulting in inaccurate adaptive brightness adjustment. Therefore, in dark environments, the controller can obtain the surrounding environment information captured by the camera outside the vehicle. The controller can identify the scene based on the surrounding environment information to assist in adjusting the screen brightness. The internal algorithm set in the camera can process the image video stream, and then the car computer can obtain the ambient brightness through the sensor of the display, and combine the external environment information with the internal ambient brightness to achieve adaptive adjustment of the screen brightness.

[0070] In the settings of various hardware in this solution, the display assembly and the car computer can reduce delays through coaxial communication. In addition, the power interface can be defined to retain the GND and VBAT signals, and output control can be achieved by waking up the microcontroller (Wake Up MCU). The car computer can also wake up the screen end by superimposing it on the coaxial cable through voltage isolation (Power Over Coaxial, POC). At this time, the signal transmission of this solution is achieved through hard-wired signals rather than through protocols. The car computer and display screen of this solution use I2C protocol software to adjust the screen brightness. This method does not occupy the port of the microcontroller of the car computer, can reduce the number of driver chips, and make the number of expanded display screens unlimited, thereby saving the input / output interface of the microcontroller.

[0071] On the basis of the above embodiments, the adaptive brightness method of the present invention is based on the system functional architecture of the vehicle display screen as the main dimming controller and the vehicle computer as the dimming slave controller. The vehicle display screen receives the ambient brightness transmitted by the sensor, determines the target screen brightness of the display screen, and then adjusts its own brightness according to the target screen brightness. The control of the screen brightness adaptive adjustment of the vehicle display screen in the present invention may include the following modes:

[0072] First, when in adaptive brightness mode, the brightness slider in the drop-down menu and the center of the vehicle will change according to the screen brightness of the display. Figure 4 When the slider and control switch are shown, in the adaptive brightness adjustment mode, the adaptive adjustment control switch is turned on, and the brightness of the slider can be adjusted according to the screen brightness. At this time, if the user cannot manually adjust the brightness bar. Figure 5 Shown is a slide bar in a drop-down menu.

[0073] If you switch to manual adjustment at this time, the adaptive adjustment button will be turned off. The brightness of the slider will not change when the user does not manually adjust it. When the user manually adjusts it, the brightness of the indicator in the slider will change as the user slides.

[0074] Optionally, when the adaptive brightness adjustment mode is turned off, user operations can be obtained by the vehicle computer. The vehicle computer needs to adjust the brightness of the central control screen according to its own brightness level setting, and provide the brightness level signal to the electronic rearview mirror and body controller, thereby completing the backlight setting of the electronic rearview mirror and body controller control parts.

[0075] Optionally, when the adaptive brightness adjustment mode is turned on, the brightness level of the interface will change with the change of the brightness slider. The car computer needs to obtain the screen brightness of the display and adjust the display of the slider accordingly. Then, the car computer will determine the brightness level according to the brightness indicated by the slider. In this process, the change of the slider will be smoothed. The car computer can also provide the brightness level signal to the electronic rearview mirror, body controller and other devices to adjust the backlight of the vehicle display screen such as the electronic rearview mirror and the body controller control.

[0076] Secondly, in a dark environment, the camera installed outside the vehicle can capture the surrounding environment, and the camera's internal algorithm can process the captured image video. At this time, when the vehicle display screen receives the ambient brightness uploaded by the sensor installed on the display screen, it can transmit the corresponding display screen brightness to the vehicle computer in a normal ambient dimming manner. After the vehicle computer obtains the target screen brightness uploaded by the vehicle display screen, it can optimize the target screen brightness in combination with the information output by the external camera. The vehicle computer can feed back the optimized target screen brightness to the display screen so that the display screen can be further optimized and adjusted.

[0077] Based on the above embodiment, one implementation of the adaptive brightness adjustment can be as follows: Figure 6 As shown, the following steps are included:

[0078] S201, the controller determines whether adaptive brightness adjustment is turned on. If not, step S202 is executed. If turned on, step S203 is executed.

[0079] S202: The controller can determine the brightness level of the interface based on the brightness of the slider adjusted by the user. The controller can send the brightness level of the interface to step S203 or step S207.

[0080] S203: The controller adjusts the screen brightness according to the brightness level.

[0081] S204: The controller may obtain the ambient brightness through a sensor disposed on the display screen.

[0082] S205: The controller adjusts its own screen brightness according to the ambient brightness.

[0083] S206. The controller obtains scene information of the scene where the vehicle is located through a sensor disposed outside the vehicle. The controller optimizes the adjusted screen brightness based on the scene information to obtain an optimized screen brightness. The controller may send the optimized screen brightness to the display screen. The controller may also determine a brightness level of the interface based on the optimized screen brightness. The controller may send the brightness level of the interface to step S206.

[0084] S207: The brightness level may include 1000 levels of brightness. The controller may convert the brightness level into a signal for the electronic rearview mirror and the vehicle body controller.

[0085] S208. The controller can adjust the backlight according to the signals of the electronic rearview mirror and the body controller to achieve brightness adjustment.

[0086] On the basis of the above embodiment, based on the sensor set outside the vehicle, the controller can also adapt the dimming logic according to the scene to achieve the optimal adjustment effect of the screen brightness in the scene. For example, the settings of some of the scenes can be shown in Table 1.

[0087] Table 1

[0088]

[0089] During vehicle driving, building shadows, tree shades, windshield wipers on, etc. may cause frequent changes in ambient brightness. Entering and exiting tunnels, entering and exiting garages, sunrise and sunset, etc. will cause large changes in ambient brightness. Therefore, for these different scenarios, different optimization logics usually need to be set in a targeted manner. This process can mainly include two steps: accurately identifying the current scene and obtaining the calibration parameters for the scene. Based on the calibration parameters for the scene, the controller can optimize the screen brightness.

[0090] On the basis of the above-mentioned embodiment, in both manual brightness adjustment and adaptive brightness adjustment modes, the brightness slider supports manual adjustment. That is, in the adaptive adjustment mode, the user can directly switch to the manual brightness adjustment mode by manually sliding the brightness bar. After the user completes the manual adjustment, the adaptive brightness adjustment mode is turned on. The controller will collect the ambient brightness in real time and adjust the screen brightness according to the ambient brightness. In the automatic adjustment process after the manual adjustment, the controller will obtain the first ambient brightness and the first screen brightness generated in the manual adjustment process. This process realizes the automatic switching of manual adjustment / adaptive adjustment.

[0091] Specifically, the controller can obtain the ambient brightness based on the real-time acquisition of the photosensitive sensor on the display screen. The controller can calculate the average brightness of the last 2 seconds. When the user completes the manual adjustment, the controller can store the average value calculated at this moment as the first ambient brightness. The first ambient brightness will be used as the basic value for subsequent brightness adjustment. During the subsequent driving of the vehicle, the controller can continue to calculate the average value of the next 2 seconds and use the average value to compare with the basic value. The controller can also preset a switching judgment threshold. The controller can compare the average value 2 seconds after the start of manual switching with the basic value. If the change in the average value compared to the basic value is greater than 20%, the controller can automatically switch to adaptive brightness adjustment and no longer maintain the screen brightness manually set by the user. If the change is less than or equal to 20%, the controller can maintain the screen brightness manually adjusted by the user unchanged. This setting can better respond to the user's subjective wishes and automatically switch modes when the ambient light changes significantly.

[0092] Figure 7 The schematic diagram of the structure of the brightness adjustment device of the vehicle display screen provided by the present invention is as follows: Figure 7 As shown, the brightness adjustment device 300 provided in this embodiment includes:

[0093] The acquisition module 301 is used to obtain the current ambient brightness at the current moment;

[0094] The adjustment module 302 is used to adaptively adjust the brightness of the vehicle display screen when it is determined that the current ambient brightness does not match the first ambient brightness; wherein the first ambient brightness is determined based on the ambient brightness when the user last manually adjusted the screen brightness of the vehicle display screen.

[0095] Optionally, the adjustment module 302 is used to:

[0096] Acquire the second ambient brightness within a first preset time period before the manual adjustment operation ends;

[0097] The first environment brightness is determined according to an average value of the second environment brightness within the first preset time period.

[0098] Optionally, the adjustment module 302 is used to:

[0099] Determine a brightness threshold range corresponding to the first ambient brightness according to the first ambient brightness and a preset coefficient;

[0100] If the current environment brightness is not within the brightness threshold range, it is determined that the current environment brightness does not match the first brightness.

[0101] Optionally, the adjustment module 302 is used to:

[0102] Determine the target screen brightness according to the current ambient brightness and the adjustment parameter; wherein the adjustment parameter is determined according to the first ambient brightness and the screen brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen;

[0103] The screen brightness of the vehicle-mounted display screen is adjusted to the target screen brightness.

[0104] Optionally, the adjustment module 302 is used to:

[0105] Get the first screen brightness of the vehicle display screen when manual adjustment is completed;

[0106] Determining, according to the first ambient brightness, a theoretical screen brightness when performing adaptive brightness adjustment;

[0107] The adjustment parameter is determined according to a difference between the theoretical screen brightness and the first screen brightness.

[0108] Optionally, the adjustment module 302 is used to:

[0109] Determining, according to the current ambient brightness, a theoretical screen brightness when performing adaptive brightness adjustment;

[0110] The target screen brightness is determined according to the difference between the theoretical screen brightness and the adjustment parameter.

[0111] Optionally, the adjustment module 302 is used to:

[0112] selecting at least one vehicle parameter from the vehicle parameters of the vehicle as a target vehicle parameter according to scene information of the scene where the vehicle is located;

[0113] Determining an optimization coefficient of screen brightness according to the target vehicle parameters;

[0114] The target screen brightness is optimized according to the optimization coefficient of the screen brightness.

[0115] Optionally, the adjustment module 302 is further configured to:

[0116] The screen brightness of other display screens of the vehicle is adjusted according to the adjusted screen brightness of the vehicle-mounted display screen.

[0117] The brightness adjustment device for the vehicle display screen provided in this embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and this embodiment will not be described in detail here.

[0118] Figure 8 This is a schematic diagram of the structure of the controller provided by the present invention. Figure 8As shown, the controller 400 provided in this embodiment includes: at least one processor 401 and a memory 402. Optionally, the device 40 further includes a communication component 403. The processor 401, the memory 402 and the communication component 403 are connected via a bus 404.

[0119] In a specific implementation process, at least one processor 401 executes the computer-executable instructions stored in the memory 402, so that at least one processor 401 executes the above method.

[0120] The specific implementation process of the processor 401 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0121] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the invention may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0122] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-volatile Memory, NVM), such as at least one disk storage.

[0123] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present invention is not limited to only one bus or one type of bus.

[0124] The present invention also provides a computer program product, comprising a computer program, and the computer program implements the above method when executed by a processor.

[0125] The present invention also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0126] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0127] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0128] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0129] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0130] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0131] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory, RAM), disk or optical disk, etc. Various media that can store program codes.

[0132] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0133] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for adjusting the brightness of a vehicle display screen, characterized in that: The method comprises: Get the current ambient brightness at the current moment; If it is determined that the current ambient brightness does not match the first ambient brightness, adaptively adjusting the brightness of the vehicle display screen; The first ambient brightness is determined according to the ambient brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen.

2. The method according to claim 1, characterized in that The first ambient brightness is determined according to the ambient brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen, including: Acquire the second ambient brightness within a first preset time period before the manual adjustment operation ends; The first environment brightness is determined according to an average value of the second environment brightness within the first preset time period.

3. The method according to claim 1, characterized in that Determining that the current environment brightness does not match the first brightness includes: Determine a brightness threshold range corresponding to the first ambient brightness according to the first ambient brightness and a preset coefficient; If the current environment brightness is not within the brightness threshold range, it is determined that the current environment brightness does not match the first brightness.

4. The method according to claim 1, characterized in that Adaptive brightness adjustment of the vehicle display, including: Determine the target screen brightness according to the current ambient brightness and the adjustment parameter; wherein the adjustment parameter is determined according to the first ambient brightness and the screen brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen; The screen brightness of the vehicle-mounted display screen is adjusted to the target screen brightness.

5. The method according to claim 4, characterized in that The adjustment parameters are determined according to the first environment brightness and the screen brightness when the user last manually adjusted the screen brightness of the vehicle display screen, and include: Get the first screen brightness of the vehicle display screen when manual adjustment is completed; Determining, according to the first ambient brightness, a theoretical screen brightness when performing adaptive brightness adjustment; The adjustment parameter is determined according to a difference between the theoretical screen brightness and the first screen brightness.

6. The method according to claim 4, characterized in that Determining a target screen brightness according to the current environment brightness and the adjustment parameter includes: Determining, according to the current ambient brightness, a theoretical screen brightness when performing adaptive brightness adjustment; The target screen brightness is determined according to the difference between the theoretical screen brightness and the adjustment parameter.

7. The method according to claim 4, characterized in that The method further comprises: selecting at least one vehicle parameter from the vehicle parameters of the vehicle as a target vehicle parameter according to scene information of the scene where the vehicle is located; Determining an optimization coefficient of screen brightness according to the target vehicle parameters; The target screen brightness is optimized according to the optimization coefficient of the screen brightness.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: The screen brightness of other display screens of the vehicle is adjusted according to the adjusted screen brightness of the vehicle-mounted display screen.

9. A brightness adjustment device for a vehicle-mounted display screen, characterized in that: include: The acquisition module is used to obtain the current ambient brightness at the current moment; An adjustment module, configured to adaptively adjust the brightness of the vehicle display screen when it is determined that the current ambient brightness does not match the first ambient brightness; The first ambient brightness is determined according to the ambient brightness when the user last manually adjusted the screen brightness of the vehicle-mounted display screen.

10. A controller, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 9.

11. A vehicle, characterized in that: include: A vehicle-mounted display screen, a brightness sensor, and a controller as claimed in claim 10.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 9 when executed by a processor.

13. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method according to any one of claims 1 to 9 is implemented.

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