Method, device and vehicle for adjusting display screen brightness

Abstract

The present invention provides a method, device and vehicle for adjusting the brightness of a display screen, the method comprising: based on current environmental information of the vehicle, setting the brightness value of the display screen to an initial brightness value corresponding to the environmental information; in the process of vehicle driving, obtaining the user's line of sight information, the line of sight information comprising: a motion trajectory between a target position and the display screen; based on the motion trajectory and the environmental information, the brightness value of the display screen is adjusted on the basis of the initial brightness value. The method provided by the present invention can automatically lower the brightness of the display screen according to the user's line of sight information, so that the user can concentrate more on driving. When the display screen is too dark, the brightness of the display screen is automatically increased according to the user's line of sight information, so that the user can quickly read the display screen content when the display screen information is needed, thereby improving the user's driving experience and being more conducive to ensuring the user's safe driving.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen brightness, and in particular to a method, a device and a vehicle for adjusting display screen brightness. Background Art

[0002] Traditional display screens adjust brightness manually or automatically through brightness information obtained from light sensors. Manual adjustment executes the result of manual adjustment regardless of the brightness of the surrounding environment; automatic adjustment uses light sensor information to reduce the contrast between the display screen brightness and the surrounding brightness, that is, when the surrounding environment is bright, the display screen brightness is high; when the surrounding environment is dark, the display screen brightness is low. Both adjustment methods do not take into account that when the user is driving, the main line of sight is directly in front, and the host display screen is at the lower right of the driver's line of sight (left steering). If the display screen is too bright, it will distract the user's attention; if the display screen is too dark, the user will not be able to read the display screen information quickly when he needs to. Both situations will affect the driver's driving experience. Summary of the invention

[0003] In view of the above problems, embodiments of the present invention provide a method, an apparatus and a vehicle for adjusting the brightness of a display screen, so as to overcome the above problems or at least partially solve the above problems.

[0004] According to a first aspect of an embodiment of the present invention, a method for adjusting the brightness of a display screen is provided, the method comprising:

[0005] Based on the current environmental information of the vehicle, setting the brightness value of the display screen to an initial brightness value corresponding to the environmental information;

[0006] During the driving of the vehicle, obtaining the user's gaze information, wherein the gaze information includes: a motion track between a target position and the display screen;

[0007] Based on the motion trajectory and the environmental information, the brightness value of the display screen is adjusted on the basis of the initial brightness value.

[0008] Optionally, the step of setting the brightness value of the display screen to an initial brightness value corresponding to the environmental information based on the current environmental information of the vehicle includes:

[0009] Acquire a current light level value from the environmental information, and acquire a current mode of the vehicle, wherein the light level value is used to represent the brightness of the ambient light, and the mode is used to represent whether the vehicle is in an energy-saving mode;

[0010] Based on the illumination level value and the mode, the brightness value of the display screen is set to the initial brightness value; wherein, the higher the illumination level value, the higher the initial brightness value.

[0011] Optionally, the adjusting the brightness value of the display screen based on the motion trajectory and the environmental information and on the basis of the initial brightness value includes:

[0012] When the motion trajectory of the user between the target position and the display screen is detected for the first time, the brightness value of the display screen is increased according to a preset first adjustment value based on the initial brightness value, so that the display screen is displayed at the first brightness value.

[0013] Optionally, the method further includes: adjusting the brightness value of the display screen based on the first brightness value based on the number of movement trajectories of the user between the target position and the display screen within a preset time period.

[0014] Optionally, the adjusting the brightness value of the display screen based on the first brightness value and based on the number of movement trajectories of the user between the target position and the display screen within a preset time period includes:

[0015] When the number of movement trajectories is greater than or equal to a first preset threshold, maintaining the first brightness value of the display screen on the basis of the first brightness value;

[0016] When the number of movement trajectories is less than the first preset threshold, the brightness value of the display screen is reduced according to the brightness setting level corresponding to the environmental information on the basis of the first brightness value.

[0017] Optionally, when the number of motion trajectories is less than the first preset threshold, according to the brightness setting level corresponding to the environmental information, reducing the brightness value of the display screen on the basis of the first brightness value, includes:

[0018] When the number of movement trajectories is greater than or equal to a second preset threshold and less than the first preset threshold, based on the environmental information, the brightness value of the display screen is reduced to a second brightness value on the basis of the first brightness value;

[0019] When the number of movement trajectories is less than a second preset threshold, based on the environmental information, the brightness value of the display screen is reduced to a third brightness value on the basis of the first brightness value;

[0020] The third brightness value is smaller than the second brightness value.

[0021] Optionally, when the number of movement trajectories is less than a second preset threshold, based on the environmental information, on the basis of the first brightness value, reducing the brightness value of the display screen to a third brightness value, including:

[0022] When the environmental information is characterized as a target environment, detecting whether it is in an energy-saving mode;

[0023] If in the energy-saving mode, based on the first brightness value, reducing the brightness value of the display screen to a third brightness value consistent with the second brightness value;

[0024] If the display screen is not in the energy-saving mode, the brightness value of the display screen is reduced to a third brightness value that is smaller than the second brightness value based on the first brightness value.

[0025] Optionally, the method further comprises:

[0026] Identifying an interface of the display screen;

[0027] When the interface of the display screen is a navigation interface, the brightness value of the display screen is maintained at the initial brightness value.

[0028] According to a second aspect of an embodiment of the present invention, a device for adjusting the brightness of a display screen includes:

[0029] A first acquisition module: based on the current environmental information of the vehicle, sets the brightness value of the display screen to an initial brightness value corresponding to the environmental information;

[0030] The second acquisition module is used to acquire the user's gaze information during the driving of the vehicle, wherein the gaze information includes a motion track between a target position and the display screen;

[0031] Adjustment module: Based on the motion trajectory and the environmental information, the brightness value of the display screen is adjusted on the basis of the initial brightness value.

[0032] A third aspect of an embodiment of the present invention provides a vehicle, comprising a module for adjusting the brightness of a display screen, wherein the module for adjusting the brightness of a display screen is used to execute the method steps for adjusting the brightness of a display screen described in the first aspect of an embodiment of the present invention, or the device for adjusting the brightness of a display screen described in the second aspect of an embodiment of the present invention.

[0033] An embodiment of the present invention provides a method for adjusting the brightness of a display screen, by setting the brightness value of the display screen to an initial brightness value corresponding to the environmental information based on the current environmental information of the vehicle; when the vehicle is driving, the display screen is displayed according to the initial brightness value, and during the driving of the vehicle, the user's line of sight information is also obtained. When it is obtained that the user's eye state has a movement trajectory between the target position and the display screen, the initial brightness value of the current display screen will be adjusted, and combined with the environmental information, it is adjusted to the optimal display screen brightness that best suits the user's current eyes.

[0034] The method for adjusting the brightness of a display screen provided by the present invention can automatically adjust the brightness of a display screen, thereby overcoming the limitation that the user cannot free both hands when manually adjusting the brightness of the display screen, and also solving the problem that the display screen brightness is automatically adjusted only according to the light sensor without considering the actual demand of the user during driving. When the scheme provided by the present invention is used, when the display screen is too bright and will distract the user's line of sight, the brightness of the display screen is automatically lowered according to the user's line of sight information, so that the user can concentrate more on driving and ensure the user's safe driving; when the display screen is too dark, the brightness of the display screen is automatically increased according to the user's line of sight information, helping the user to quickly read the display screen content when the display screen information is needed, thereby improving the user's driving experience and being more conducive to ensuring the user's safe driving.

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0036] Figure 1 is a flowchart of a method for adjusting the brightness of a display screen provided by an embodiment of the present invention;

[0037] Figure 2 is a block diagram of a device for adjusting the brightness of a display screen provided by an embodiment of the present invention;

[0038] Figure 3 is a schematic diagram of an environment mode for adjusting the brightness of a display screen provided by an embodiment of the present invention;

[0039] Figure 4 The present invention is a schematic diagram of a device for adjusting the brightness of a display screen provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0041] The current vehicle display brightness adjustment methods do not take into account that when the user is driving, the main line of sight is straight ahead, and the host display is at the lower right of the driver's line of sight (left steering). If the display is too bright, it will distract the user's attention; if the display is too dark, the user will not be able to read the display information quickly when they need to. Both situations will affect the user's driving experience.

[0042] Therefore, the present invention discloses a method, device and vehicle for adjusting the brightness of a display screen to improve the current user's driving experience.

[0043] In a first aspect of an embodiment of the present invention, a method for adjusting the brightness of a display screen is provided, referring to Figure 1 , Figure 1 is a flowchart of a method for adjusting the brightness of a display screen provided by an embodiment of the present invention. Figure 1 As shown, the method includes:

[0044] Step S101: Based on the current environmental information of the vehicle, the brightness value of the display screen is set to an initial brightness value corresponding to the environmental information.

[0045] In this embodiment, refer to Figure 2 , Figure 2 This is a block diagram of a device for adjusting the brightness of a display screen provided by an embodiment of the present invention. The current information of the vehicle is obtained through a multimedia host. According to the current environmental information of the vehicle, an initial brightness value corresponding to the vehicle environmental information is obtained, and the brightness value is sent to the host display screen for display. The current environmental information of the vehicle includes the external environmental information of the vehicle and the internal environmental information of the vehicle. The external environmental information includes the GPS time signal, the sunrise and sunset signal, and the weather forecast issued by the China Weather Network. The current time period of the current vehicle can be known through the GPS time signal and the sunrise and sunset signal received by the vehicle multimedia host. The analysis of the time can know whether it is daytime or night at this time. The weather forecast issued by the China Weather Network can know whether the current vehicle is sunny, cloudy, or rainy.

[0046] The internal environment information of the vehicle may include detecting whether the vehicle's headlights are turned on. The multimedia host obtains the on / off state of the vehicle's headlights through the body domain controller. When it is obtained that the vehicle's headlights are in the on state, the corresponding brightness mode of the display screen when the weather forecast is received as sunny can be cloudy. If the vehicle's headlights are turned off, the corresponding initial brightness value is selected according to the specific weather forecast. By detecting and combining the above environmental information, it can be determined whether the current vehicle host display screen is in a sunny day, cloudy day, night, etc. In addition, the current power of the vehicle battery is detected in real time. When it is greater than the preset power, the vehicle display screen is in a normal mode under the corresponding environment, such as: when it is determined to be sunny during the day, the corresponding mode is the normal mode of sunny day; when the power of the vehicle battery is less than the preset value, the energy-saving mode of the corresponding mode is displayed, such as: when it is determined to be sunny during the day, the corresponding final mode is the energy-saving mode of sunny day; according to the determined environmental mode, the multimedia host can calculate and execute the corresponding initial brightness value in the current weather mode, and the initial brightness values ​​corresponding to different modes are different, and send the obtained initial brightness value of the display screen in the current corresponding mode to the display host for display.

[0047] Step S102: during the driving of the vehicle, obtaining the user's gaze information, wherein the gaze information includes a motion trajectory between a target position and the display screen.

[0048] In this embodiment, when the display screen host has obtained the initial brightness value corresponding to the corresponding mode for display, the user's gaze information is detected in real time by the face recognition camera during the user's driving, wherein the gaze information includes a motion trajectory between the target position and the display screen, and the motion trajectory represents the trajectory of the user's eye gaze direction changing from the front to the direction of the display screen. The gaze information can be the user's head turning information, that is, the movement trajectory of the user's head turning from the front direction of the vehicle display screen to the display screen area, or the user's eye movement information, that is, the movement trajectory of the user's eyeball from the front direction of the user's visual range to the display screen area. The target position can be the user's line of sight directly in front, or it can be an area customized according to the user's personal habits, such as a rearview mirror. Because when the user wants to view the content displayed on the display screen, out of habit, he may first look at the rearview mirror to determine whether there is a car behind the car very close to the car, and then decide whether to view the content of the display screen. Therefore, the target area may also be the rearview mirror. The target area here is not limited and can be set according to the user's usage habits. Several target areas can be set. The face recognition camera detects in real time whether the user has a trajectory of turning from the target area of ​​the line of sight to the display screen area, and can also memorize the number of times the target area of ​​the user's line of sight turns to the display screen area.

[0049] Step S103: Based on the motion trajectory and the environmental information, the brightness value of the display screen is adjusted on the basis of the initial brightness value.

[0050] In this embodiment, the user's line of sight is adjusted according to the movement trajectory of the user's eye between the target position and the display screen, and the initial brightness value corresponding to the display screen brightness adjustment mode corresponding to the current environmental information. When the face recognition camera detects that the user's line of sight is transferred from the area of ​​the display screen in the direction of the front area, this action will be sent to the multimedia host through the body domain controller. The multimedia host will obtain the brightness adjustment mode of the current display screen, and obtain the corresponding target brightness value according to the corresponding motion trajectory information contained in the brightness adjustment mode. When the target brightness value is obtained, the target brightness value is sent to the display screen host to adjust the initial brightness value currently displayed by the display screen, wherein the adjusted brightness value corresponding to the initial brightness value of the display screen is determined jointly according to the user's motion trajectory and the environmental information corresponding to the current display screen.

[0051] In addition, it is also possible to directly identify the direction of the user's gaze, and obtain whether the user's current gaze is in the area of ​​the display screen. For example, the face recognition camera tracks the user's face recognition pupil area, and tracks the user's pupil area information in real time. By tracking the user's pupil area information, the user's line of sight information is tracked until the line of sight corresponding to the user's pupil area is detected in the display screen area, and this information is memorized. The time the line of sight stays in the display screen area is also memorized. The brightness value of the display screen can be adjusted according to the time the user's line of sight stays in the display screen area or by directly detecting the user's line of sight in the display screen area.

[0052] In one embodiment, the brightness value of the display screen is set to an initial brightness value corresponding to the environmental information based on the current environmental information of the vehicle, including: obtaining a current light level value from the environmental information, and obtaining a current mode of the vehicle, the light level value being used to characterize the brightness of the ambient light, and the mode being used to characterize whether the vehicle is in an energy-saving mode; based on the light level value and the mode, setting the brightness value of the display screen to the initial brightness value; wherein, the higher the light level value, the higher the initial brightness value.

[0053] In this embodiment, according to the current environmental information of the vehicle, the brightness value of the display screen is set to the initial brightness value corresponding to the environmental information, including obtaining the current illumination value from the environmental information and obtaining the current mode of the vehicle. The illumination value is used to represent the brightness of the ambient light, and the mode is used to represent whether the vehicle is in energy-saving mode. Figure 3 , Figure 3It is a schematic diagram of an environmental mode for adjusting the brightness of a display screen provided in an embodiment of the present invention. In this embodiment, the light level value refers to different environments determined by the GPS time signal or sunrise and sunset signal currently obtained by the vehicle, the weather forecast issued by China Weather Network, and the switch status of the vehicle's headlights, and the rainfall light sensor. The final determined environment can be a daytime sunny mode, a daytime cloudy mode, a night mode, etc., wherein the initial brightness values ​​corresponding to the light level values ​​of different environments are different, wherein the higher the light level value, the higher the initial brightness value. For example: the light level value of the daytime sunny mode is higher than that of the night mode, then the initial brightness value of the daytime sunny mode is higher than the initial brightness value of the night mode.

[0054] Since the battery power of the vehicle will be continuously consumed during the actual driving process, in order to avoid the battery power shortage caused by the user using the vehicle electrical equipment for a long time in the parking state, the multimedia display screen controls the degradation of related loads according to the system power saving command, and divides the environmental mode into normal mode and energy saving mode. Therefore, it is necessary to further determine whether the environmental mode of the vehicle display screen is in an energy saving mode by real-time detection of the current battery condition of the vehicle. When it is detected that the battery power of the vehicle is less than 20%, the current environmental mode is determined to be the energy saving mode. When it is detected that the battery power of the vehicle is greater than or equal to 20%, the current environmental mode is determined to be the normal mode. The energy saving mode and the normal mode will also affect the initial value of the environmental mode. By adding the corresponding battery power information, the environmental mode is specifically divided into: normal mode for sunny days during the day, normal mode for cloudy days during the day, normal mode for night, energy saving mode for sunny days during the day, energy saving mode for cloudy days during the day, and energy saving mode for night. Different modes have different initial brightness values. According to the final determined mode, the corresponding initial value brightness is selected and sent to the display host for display.

[0055] In one embodiment, based on the motion trajectory and the environmental information, the brightness value of the display screen is adjusted on the basis of the initial brightness value, including: when the motion trajectory of the user between the target position and the display screen is detected for the first time, based on the initial brightness value, the brightness value of the display screen is increased according to a preset first adjustment value so that the display screen is displayed at the first brightness value.

[0056] In this embodiment, when the user's motion trajectory between the target position and the display screen is detected for the first time, the initial brightness value is increased according to the preset first adjustment value so that the display screen is displayed at the first brightness value. After the user gets on the vehicle and the display screen has been displayed at the initial brightness value of the current environment, the user's motion trajectory is detected in real time. When it is detected that the user's line of sight is moving between the target position and the display screen, the first adjustment value of the environmental mode corresponding to the current initial brightness value is obtained and sent to the display screen host. The display screen host adjusts the initial brightness value, specifically, increases the initial brightness value, and adjusts the initial brightness value of the display screen to the first brightness value, that is, the brightness currently displayed by the display screen is the first brightness value.

[0057] In one embodiment, it further includes: adjusting the brightness value of the display screen based on the first brightness value based on the number of movement trajectories of the user between the target position and the display screen within a preset time period.

[0058] In this embodiment, when the display screen has displayed the first brightness value, the user's motion trajectory continues to be detected within a preset time length, and the number of the user's motion trajectory is memorized, and the first brightness value currently displayed on the display screen is adjusted according to the number of the user's motion trajectory within the preset time length.

[0059] In one embodiment, based on the number of movement trajectories of the user between the target position and the display screen within a preset time period, the brightness value of the display screen is adjusted on the basis of the first brightness value, including: when the number of movement trajectories is greater than or equal to a first preset threshold, on the basis of the first brightness value, maintaining the first brightness value of the display screen; when the number of movement trajectories is less than the first preset threshold, according to the brightness setting gear corresponding to the environmental information, on the basis of the first brightness value, reducing the brightness value of the display screen.

[0060] In this embodiment, when the current display screen has displayed the first brightness value, the brightness of the display screen is adjusted according to the number of user motion trajectories memorized within the preset time. When the number of user motion trajectories memorized is greater than or equal to the first preset threshold, the first brightness value is still maintained for display. Only when the number of user motion trajectories memorized is less than the first preset threshold, the first brightness value of the display screen is adjusted to reduce the first brightness value. For example, when the current display screen is in the daytime sunny mode, the brightness of the display screen is the initial brightness value, and the face recognition camera will collect the user's eye movement information in real time. When it is detected that the user's line of sight is transferred from the front to the display area of ​​the display screen, the brightness of the display screen is adjusted to 8 (first brightness value); then by memorizing the number of user motion trajectories within 1 minute (preset time), the user has 10 times (first preset threshold) or more of the motion trajectory that continuously transfers from the front to the display area of ​​the display screen, the brightness remains unchanged at the current state, and the brightness of the display screen is 8; when the number of user motion trajectories memorized within 1 minute is less than 10, the brightness setting gear corresponding to the environmental information will be adjusted down on the basis of the display screen brightness value of 8.

[0061] In one embodiment, when the number of motion trajectories is less than the first preset threshold, the brightness value of the display screen is reduced based on the first brightness value according to the brightness setting gear corresponding to the environmental information, including: when the number of motion trajectories is greater than or equal to a second preset threshold and less than the first preset threshold, based on the environmental information, the brightness value of the display screen is reduced to a second brightness value; when the number of motion trajectories is less than the second preset threshold, based on the environmental information, the brightness value of the display screen is reduced to a third brightness value based on the first brightness value; the third brightness value is less than the second brightness value.

[0062] In this embodiment, when it is detected that the number of user's trajectories is less than the first preset threshold, the first brightness value is lowered according to the brightness setting gear corresponding to the environmental information, and the lowered brightness value is divided into a second brightness value and a third brightness value in combination with the range of the number of user's motion trajectories. When the number of user's motion trajectories is greater than or equal to the second preset threshold and less than the first preset threshold, based on the environmental information, the brightness value of the display screen is lowered to the second brightness value, and when the number of motion trajectories is less than the second preset threshold, based on the environmental information, the brightness value of the display screen is lowered to the third brightness value; for example: in the daytime sunny mode, when the first brightness value of the number of motion trajectories is 8, the second brightness value of the display screen will be adjusted to a brightness value smaller than 8, such as a brightness value of 7, and the first brightness value of the display screen will be adjusted to a brightness value smaller than the second brightness value, such as a brightness value of 6.

[0063] In one embodiment, when the number of motion trajectories is less than a second preset threshold, based on the environmental information, the brightness value of the display screen is reduced to a third brightness value on the basis of the first brightness value, including: when the environmental information is characterized as a target environment, detecting whether it is in an energy-saving mode; if it is in the energy-saving mode, based on the first brightness value, reducing the brightness value of the display screen to a third brightness value consistent with the second brightness value; if it is not in the energy-saving mode, reducing the brightness value of the display screen to a third brightness value less than the second brightness value.

[0064] In this embodiment, when the number of user motion trajectories is less than the second preset threshold, it is also necessary to know that the current environment corresponds to an energy-saving mode, such as a night energy-saving mode. In the night energy-saving mode, when the number of motion trajectories is less than the second preset threshold, the first brightness value is also reduced to the second brightness value, because it is guaranteed that under the current brightness value, the user can also clearly see the content on the display screen. When it is in the night energy-saving mode, when the number of user motion trajectories is less than the second preset threshold, the display screen brightness will be adjusted to the third brightness value for display.

[0065] In one embodiment, the method further includes: identifying an interface of the display screen; and when the interface of the display screen is a navigation interface, maintaining the brightness value of the display screen at the initial brightness value.

[0066] In this embodiment, when the user is driving, if the interface of the display screen is a navigation interface, for example, when the user is 2 km away from a fork in the road, a toll booth, a destination, a highway lane change, etc., and is not traveling along the current road, regardless of whether the user's eye trajectory changes, the initial brightness value of the display screen will be maintained in the current mode and will not change.

[0067] By way of example, the present invention will describe in detail a specific application of the present invention in real life in conjunction with the accompanying drawings of specific embodiments. The specific application process includes the following steps:

[0068] Step 1: Determine the working conditions

[0069] When the vehicle power mode is ON, the display screen is in the on state. At this time, a window can pop up on the display screen. The content in the window can be adjusted manually, automatically, and with the line of sight for users to choose. During the user's driving process, the brightness of the display screen will be adjusted according to the mode selected by the user.

[0070] Step 2: The display screen uses the initial brightness value to display

[0071] During the startup or restart process of the display host, the multimedia host needs to memorize the setting value before the display host is shut down. If the setting value before the display host is shut down cannot be obtained, the system preset default value will be obtained. The default value is not limited, but it should be ensured that the host display is at the default value brightness, and the displayed content can ensure that the user can see clearly.

[0072] When the display screen is turned on, the multimedia host will send the set brightness or default brightness value to the display screen host, and the display screen will display the brightness value sent by the multimedia host.

[0073] After waiting for the vehicle system setting service to start, the multimedia itself will determine the correct brightness value that the current display should display by receiving the vehicle's external environment and internal environment combined with the display's brightness reference table. After the multimedia host obtains the correct brightness value that the current display host should display, it actively sends the correct brightness value corresponding to the current display host. The display is displayed according to the brightness value sent by the multimedia host. This brightness value is the initial brightness value after selecting the corresponding mode.

[0074] The multimedia host receives the GPS time signal / sunrise and sunset signal to determine whether the user is currently in daytime or night. Through the weather forecast issued by China Weather Network, it can be determined whether the user is currently in a sunny or cloudy day. Combined with the user manually / automatically turning on the headlights, the user's actual driving environment can be further determined. When the user turns on the headlights, it can be defined as cloudy when the weather forecast reports a sunny day. Based on the above environmental information, it can be determined whether the current vehicle host display screen is in daytime, night, sunny, cloudy, etc. This value is not memorized and the refresh frequency is 10 minutes / time. When obtaining this value, the battery status must be detected by the battery management system in real time to further determine the correct brightness value that the display screen host should currently display, and determine whether it should be in normal mode display brightness or energy-saving mode display brightness.

[0075] The multimedia host receives GPS time signals / sunrise and sunset signals and the weather forecast issued by China Weather Network, combined with the user manually / automatically turning on the headlights, and comprehensively based on day / night / sunny / cloudy conditions, combined with the brightness comparison table to calculate and execute the current brightness value. This value is not memorized, and the refresh frequency is 10 minutes / time. Combined with the battery status, it displays the basic brightness of the normal / energy-saving screen. In order to prevent the user from using the vehicle's electrical equipment for a long time when the vehicle is parked, causing the battery to run low, the multimedia display screen controls the degradation of related loads according to the system power-saving command. The modes are divided into six modes: normal mode for sunny days / energy-saving mode for sunny days / normal mode for cloudy days / energy-saving mode for cloudy days / normal mode at night / energy-saving mode at night, and the modes can be switched. Figure 3, the following will discuss the six modes one by one.

[0076] Step 3: The current display mode is adjusted based on the user's eye movement information. The following will further explain the specific adjustment methods corresponding to each mode:

[0077] The first mode: In normal mode on a sunny day, the display brightness is 6. When the user chooses to adjust with the line of sight, the face recognition camera will collect the user's eye movement information in real time. When it detects that the user's line of sight moves from ① directly in front to the display area of ​​② the display screen, the display brightness is adjusted to 8;

[0078] If the user continues the eye movement from step ① to step ② for more than 10 times in the next minute, the brightness will remain unchanged at the current state;

[0079] If the user has 10-5 eye movements from step ① to step ② in the next minute, the brightness is adjusted to 7;

[0080] If the user has 4 or fewer eye movements from ① to ② in the next minute, the brightness will be adjusted to 6.

[0081] The second mode: In the energy-saving mode on sunny days, the display brightness is 5. When the user chooses to adjust with the line of sight, the face recognition camera will collect the user's eye movement information in real time. When it detects that the user's line of sight moves from ① directly in front to the display area of ​​② the display screen, the display brightness is adjusted to 7;

[0082] If the user continues the eye movement from step ① to step ② for more than 10 times in the next minute, the brightness will remain unchanged at the current state;

[0083] If the user has 10-5 eye movements from step ① to step ② in the next minute, the brightness is adjusted to 6;

[0084] If the user has 4 or fewer eye movements from ① to ② in the next minute, the brightness will be adjusted to 5.

[0085] The third mode: In normal mode on cloudy days, the display brightness is 5. When the user chooses to adjust with sight, the face recognition camera will collect the user's eye movement information in real time. When it detects that the user's sight moves from ① directly in front to the display area of ​​② display screen, the display brightness is adjusted to 7.

[0086] If the user continues the eye movement from step ① to step ② for more than 10 times in the next minute, the brightness will remain unchanged at the current state;

[0087] If the user has 10-5 eye movements from step ① to step ② in the next minute, the brightness is adjusted to 6;

[0088] If the user has 4 or fewer eye movements from ① to ② in the next minute, the brightness will be adjusted to 5.

[0089] The fourth mode: In the energy-saving mode on cloudy days, the display brightness is 4. When the user chooses to adjust with the line of sight, the face recognition camera will collect the user's eye movement information in real time. When it detects that the user's line of sight moves from ① directly in front to the display area of ​​② the display screen, the display brightness is adjusted to 7;

[0090] If the user continues the eye movement from step ① to step ② for more than 10 times in the next minute, the brightness will remain unchanged at the current state;

[0091] If the user has 10-5 eye movements from step ① to step ② in the next minute, the brightness is adjusted to 6;

[0092] If the user has 4 or fewer eye movements from ① to ② in the next minute, the brightness will be adjusted to 4.

[0093] The fifth mode: In the normal mode at night, the display brightness is 3. After the user chooses to adjust with the line of sight, the face recognition camera will collect the user's eye movement information in real time. When it detects that the user's line of sight moves from ① directly in front to the display area of ​​② the display screen, the display brightness is adjusted to 5;

[0094] If the user continues the eye movement from step ① to step ② for more than 10 times in the next minute, the brightness will remain unchanged at the current state;

[0095] If the user has 10-5 eye movements from step ① to step ② in the next minute, the brightness is adjusted to 4;

[0096] If the user has 4 or fewer eye movements from ① to ② in the next minute, the brightness will be adjusted to 3.

[0097] The sixth mode: In the night energy-saving mode, the display brightness is 3. After the user chooses to adjust with the line of sight, the face recognition camera will collect the user's eye movement information in real time. When it detects that the user's line of sight moves from ① directly in front to the display area of ​​② the display screen, the display brightness is adjusted to 4;

[0098] If the user continues the eye movement from step ① to step ② for more than 10 times in the next minute, the brightness will remain unchanged at the current state;

[0099] If the user has 10-5 eye movements from step ① to step ② in the next minute, the brightness is adjusted to 3;

[0100] If the user has 4 or fewer eye movements from ① to ② in the next minute, the brightness will be adjusted to 3.

[0101] It should be noted that if the current display interface is the navigation interface, that is, when the distance to the fork, toll station, destination, highway lane change, etc. is not 2KM along the current road, regardless of whether the driver's eye trajectory changes, the initial brightness in the current mode will remain unchanged.

[0102] The method provided by the present invention overcomes the limitation that the user cannot free his hands when manually adjusting the brightness of the display screen, and also solves the situation that the display screen brightness is automatically adjusted according to the light sensor without considering the actual demand of the user during driving. When the scheme provided by the present invention is used, when the display screen is too bright and will distract the user's line of sight, the brightness of the display screen is automatically lowered according to the user's line of sight, so that the user can concentrate more on driving and ensure the user's safe driving; when the display screen is too dark, the brightness of the display screen is automatically increased according to the user's line of sight, helping the user to quickly read the display screen content when he needs to see the display screen information, improving the user's driving experience, and being more conducive to ensuring the user's safe driving. It can also meet various mode switching in different weather and different battery states, and can also meet the display screen brightness display of multiple gears. Not only can the host display screen brightness be adjusted by the driver's line of sight shift, but also various mode switching in different weather and different battery states can be met, and the display screen brightness display of multiple gears can be met.

[0103] According to a second aspect of an embodiment of the present invention, a device for adjusting the brightness of a display screen includes:

[0104] The first acquisition module: based on the current environmental information of the vehicle, sets the brightness value of the display screen to an initial brightness value corresponding to the environmental information; the second acquisition module: during the driving of the vehicle, acquires the user's line of sight information, and the line of sight information includes: a motion trajectory between the target position and the display screen; the adjustment module: based on the motion trajectory and the environmental information, on the basis of the initial brightness value, adjusts the brightness value of the display screen.

[0105] In this embodiment, see Figure 4 , Figure 4 It is a schematic diagram of the structure of a device for adjusting the brightness of a display screen provided by an embodiment of the present invention. The device includes a first acquisition module 401, a second acquisition module 402, and an adjustment module 403.

[0106] The first acquisition module 401: based on the current environmental information of the vehicle, sets the brightness value of the display screen to an initial brightness value corresponding to the environmental information;

[0107] The second acquisition module 402: during the driving of the vehicle, acquires the user's gaze information, wherein the gaze information includes: a motion track between a target position and the display screen;

[0108] Adjustment module 403: Based on the motion trajectory and the environmental information, and on the basis of the initial brightness value, adjust the brightness value of the display screen.

[0109] Through the above-mentioned device, a method for adjusting the brightness of the display screen provided by the present invention can be implemented to automatically adjust the brightness of the display screen, that is, the limitation that the user cannot free his hands when manually adjusting the brightness of the display screen is overcome, and the situation that the display screen brightness is automatically adjusted only according to the light sensor without considering the actual demand of the user during driving is solved. When the scheme provided by the present invention is used, when the display screen is too bright and will distract the user's line of sight, the brightness of the display screen is automatically lowered according to the user's line of sight, so that the user can concentrate more on driving and ensure the user's safe driving; when the display screen is too dark, the brightness of the display screen is automatically increased according to the user's line of sight, helping the user to quickly read the display screen content when he needs to see the display screen information, thereby improving the user's driving experience, and is more conducive to ensuring the user's safe driving. It can also meet the various mode switching requirements under different weather and different battery conditions, and can also meet the display screen brightness display of multiple gears.

[0110] A third aspect of an embodiment of the present invention provides a vehicle, comprising a module for adjusting the brightness of a display screen, wherein the module for adjusting the brightness of a display screen is used to execute the method steps for adjusting the brightness of a display screen described in the first aspect of an embodiment of the present invention, or the device for adjusting the brightness of a display screen described in the second aspect of an embodiment of the present invention.

[0111] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0112] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, apparatuses, electronic devices, and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0113] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0114] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0115] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0116] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0117] The method, device and vehicle for adjusting the brightness of a display screen provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A method for adjusting the brightness of a display screen, characterized in that: The method comprises: Based on the current environmental information of the vehicle, the brightness value of the display screen is set to an initial brightness value corresponding to the environmental information; wherein, a current illumination value is obtained from the environmental information, and a current mode of the vehicle is obtained, the illumination value is used to characterize the brightness of the ambient light, and the mode is used to characterize whether the vehicle is in an energy-saving mode; based on the illumination value and the mode, the brightness value of the display screen is set to the initial brightness value; wherein, the higher the illumination value, the higher the initial brightness value; During the driving of the vehicle, obtaining the user's gaze information, wherein the gaze information includes: a motion track between a target position and the display screen; Based on the motion trajectory and the environmental information, the brightness value of the display screen is adjusted on the basis of the initial brightness value; wherein, when the motion trajectory of the user between the target position and the display screen is detected for the first time, the brightness value of the display screen is increased according to a preset first adjustment value, so that the display screen is displayed at the first brightness value; Based on the number of motion trajectories of the user between the target position and the display screen within a preset time period, the brightness value of the display screen is adjusted on the basis of the first brightness value; wherein, when the number of motion trajectories is greater than or equal to a first preset threshold, the brightness value of the display screen is maintained on the basis of the first brightness value; when the number of motion trajectories is less than the first preset threshold, the brightness value of the display screen is reduced on the basis of the first brightness value according to the brightness setting gear corresponding to the environmental information; and, identifying an interface of the display screen; In the case where the interface of the display screen is a navigation interface, when approaching a position where the vehicle is not traveling along the current road, the brightness value of the display screen is maintained at the initial brightness value regardless of whether the user's eye trajectory changes.

2. The method according to claim 1, characterized in that When the number of movement trajectories is less than the first preset threshold, according to the brightness setting level corresponding to the environmental information, the brightness value of the display screen is reduced based on the first brightness value, including: When the number of movement trajectories is greater than or equal to a second preset threshold and less than the first preset threshold, based on the environmental information, the brightness value of the display screen is reduced to a second brightness value on the basis of the first brightness value; When the number of movement trajectories is less than a second preset threshold, based on the environmental information, the brightness value of the display screen is reduced to a third brightness value on the basis of the first brightness value; The third brightness value is smaller than the second brightness value.

3. The method according to claim 2, characterized in that When the number of movement trajectories is less than a second preset threshold, based on the environmental information, the brightness value of the display screen is reduced to a third brightness value on the basis of the first brightness value, including: When the environmental information is characterized as a target environment, detecting whether it is in an energy-saving mode; If in the energy-saving mode, based on the first brightness value, reducing the brightness value of the display screen to a third brightness value consistent with the second brightness value; If the display screen is not in the energy-saving mode, the brightness value of the display screen is reduced to a third brightness value that is smaller than the second brightness value based on the first brightness value.

4. A device for adjusting the brightness of a display screen, characterized in that: The device comprises: A first acquisition module: based on the current environmental information of the vehicle, setting the brightness value of the display screen to an initial brightness value corresponding to the environmental information; wherein the current illumination value is obtained from the environmental information, and the current mode of the vehicle is obtained, the illumination value is used to characterize the brightness of the ambient light, and the mode is used to characterize whether the vehicle is in an energy-saving mode; based on the illumination value and the mode, setting the brightness value of the display screen to the initial brightness value; wherein the higher the illumination value, the higher the initial brightness value; The second acquisition module is used to acquire the user's gaze information during the driving of the vehicle, wherein the gaze information includes a motion track between a target position and the display screen; Adjustment module: Based on the motion trajectory and the environmental information, the brightness value of the display screen is adjusted on the basis of the initial brightness value; wherein, when the motion trajectory of the user between the target position and the display screen is detected for the first time, the brightness value of the display screen is increased according to the preset first adjustment value, so that the display screen is displayed at the first brightness value; based on the number of motion trajectories of the user between the target position and the display screen within a preset time length, the brightness value of the display screen is adjusted on the basis of the first brightness value; wherein, when the number of motion trajectories is greater than or equal to a first preset threshold value, the brightness value of the display screen is maintained on the basis of the first brightness value; when the number of motion trajectories is less than the first preset threshold value, the brightness value of the display screen is reduced on the basis of the first brightness value according to the brightness setting gear corresponding to the environmental information; and, identifying an interface of the display screen; In the case where the interface of the display screen is a navigation interface, when approaching a position where the vehicle is not traveling along the current road, the brightness value of the display screen is maintained at the initial brightness value regardless of whether the user's eye trajectory changes.

5. A vehicle, comprising a module for adjusting display screen brightness, wherein the module for adjusting display screen brightness is used to execute the method described in any one of claims 1 to 3, or comprises a device for adjusting display screen brightness described in claim 4.

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