A control method, storage medium and vehicle-mounted display device for a vehicle-mounted display device

Abstract

The present application relates to the technical field of in-vehicle displays, and provides a control method, a storage medium, and an in-vehicle display device for an in-vehicle display device, where the in-vehicle display device has a head-up display area and a center console display area; the control method includes: obtaining the current line-of-sight position of the driving user; when the line-of-sight position of the driving user is located in the center console display area, displaying an image in the center console display area with a first color depth; and when the line-of-sight position of the driving user is not located in the center console display area, displaying an image in the center console display area with a second color depth, where the second color depth is less than the first color depth. In the above method, when the driving user views the center console display area, an image is displayed with the first color depth, and an image with richer colors and higher contrast can be displayed. When not viewed, an image is displayed with the second color depth, which can reduce the amount of data processing. That is, the above method can reduce the data processing burden of the in-vehicle display device without affecting the driving user's viewing of the image.

Description

Technical Field

[0001] The present application relates to the technical field of in-vehicle displays, and particularly to a control method for an in-vehicle display device, a storage medium, and an in-vehicle display device applying the control method. Background Art

[0002] To meet diverse display requirements, multiple displays may be installed in a vehicle simultaneously, such as an instrument display, a head-up display, and a rearview mirror display, and each display is located at a different position in the vehicle. For example, the instrument display is usually located near the steering wheel on the vehicle center console and is used to display vehicle condition information (such as vehicle speed, fuel level, mileage, etc.). The head-up display usually projects a virtual image outside the windshield in front of the driver's line of sight while driving, and the virtual image can be superimposed on the real environment in front of the vehicle to assist in guiding the driver's behavior. The rearview mirror display is usually integrated with the vehicle rearview mirror and is used to display the road conditions behind the vehicle.

[0003] When driving a vehicle, the user needs to observe the above various displays to assist in driving. Due to the large difference in the installation positions of the displays, at the same moment, the user's line of sight can usually only observe one of the displays.

[0004] However, the displays in the vehicle always run simultaneously, which requires the vehicle control system to process the image data of each display at the same time, resulting in an unnecessary increase in the amount of data processing and an unnecessary increase in the burden on the control system. Summary of the Invention

[0005] A first aspect of the present application provides a control method for an in-vehicle display device, where the in-vehicle display device has a head-up display area and a center console display area; the control method includes:

[0006] Obtaining the current line of sight position of the driving user;

[0007] When the line of sight position of the driving user is in the center console display area, displaying an image in the center console display area with a first color depth; and

[0008] When the line of sight position of the driving user is not in the center console display area, displaying an image in the center console display area with a second color depth, where the second color depth is less than the first color depth.

[0009] In at least one embodiment, the step of displaying an image in the center console display area with a first color depth when the line of sight position of the driving user is in the center console display area specifically includes:

[0010] When the line of sight position of the driving user is in the center console display area, displaying an image in the center console display area with a first color depth and a first frequency;

[0011] When the line-of-sight position of the driving user is not located in the center console display area, the step of displaying an image in the center console display area with a second color depth specifically includes:

[0012] When the line-of-sight position of the driving user is not located in the center console display area, an image is displayed in the center console display area with a second color depth and a second frequency, and the second frequency is less than the first frequency.

[0013] In at least one embodiment, the step of obtaining the current line-of-sight position of the driving user specifically includes:

[0014] Obtain the current line-of-sight position of the driving user and the current vehicle speed;

[0015] When the line-of-sight position of the driving user is not located in the center console display area, the step of displaying an image in the center console display area with a second color depth and a second frequency includes:

[0016] When the line-of-sight position of the driving user is not located in the center console display area and the current vehicle speed is less than or equal to a preset vehicle speed, an image is displayed in the center console display area with a second color depth and a second frequency;

[0017] When the line-of-sight position of the driving user is not located in the center console display area and the current vehicle speed is greater than the preset vehicle speed, an image is displayed in the center console display area with a first color depth and a first frequency.

[0018] In at least one embodiment, the step of obtaining the current line-of-sight position of the driving user specifically includes:

[0019] Obtain the current line-of-sight position of the driving user and the current ambient brightness;

[0020] When the line-of-sight position of the driving user is not located in the center console display area, the step of displaying an image in the center console display area with a second color depth and a second frequency includes:

[0021] When the line-of-sight position of the driving user is not located in the center console display area and the current ambient brightness is greater than a first preset brightness, an image is displayed in the center console display area with a second color depth and a second frequency;

[0022] When the line-of-sight position of the driving user is not located in the center console display area and the current ambient brightness is less than or equal to the first preset brightness, an image is displayed in the center console display area with the first color depth and the first frequency.

[0023] In at least one embodiment, after the step of, when the line-of-sight position of the driving user is not located in the center console display area and the current ambient brightness is greater than a first preset brightness, displaying an image in the center console display area with a second color depth and a second frequency, further includes:

[0024] When the line-of-sight position of the driving user is not located in the center console display area and the current ambient brightness is greater than a second preset brightness, an image is displayed in the center console display area with a first color depth and a first frequency; wherein, the second preset brightness is greater than the first preset brightness.

[0025] In at least one embodiment, after the step of displaying an image in the center console display area with a second color depth and a second frequency when the line-of-sight position of the driving user is not located in the center console display area and the current ambient brightness is greater than a first preset brightness, the method further includes:

[0026] When the line-of-sight position of the driving user is not located in the center console display area and the duration for which the current ambient brightness is greater than a second preset brightness exceeds a first preset duration, an image is displayed in the center console display area with a third color depth and a third frequency; wherein, the third color depth is greater than the first color depth and the third frequency is greater than the first frequency.

[0027] In at least one embodiment, after the step of displaying an image in the center console display area with a second color depth and a second frequency when the line-of-sight position of the driving user is not located in the center console display area and the current ambient brightness is greater than a first preset brightness, the method further includes:

[0028] When the line-of-sight position of the driving user is not located in the center console display area and the current ambient brightness is greater than a third preset brightness, an image is displayed in the center console display area with a third color depth and a third frequency; wherein, the third preset brightness is greater than the second preset brightness.

[0029] In at least one embodiment, when the line-of-sight position of the driving user is located in the center console display area, the step of displaying an image in the center console display area with a first color depth and a first frequency specifically includes:

[0030] When the duration for which the line-of-sight position of the driving user is located in the display area is greater than a second preset duration, an image is displayed in the center console display area with a first color depth and a first frequency.

[0031] A second aspect of the present application provides a storage medium storing a computer program, and the computer program, when read, implements the steps of the control method of the in-vehicle display device as described above.

[0032] A third aspect of the present application provides an in-vehicle display device, including an image processor and a memory, the memory storing a computer program, and the computer program, when read by the image processor, causes the image processor to execute the steps of the control method of the in-vehicle display device as described above.

[0033] When driving a vehicle, the driver's gaze is mostly in front of the vehicle, such as watching the virtual image displayed on the head-up display, and the gaze is relatively less on the instrument display. Therefore, when the on-board display device is an instrument display, the effect of reducing the amount of data processing and the burden on the image processor is more significant.

[0034] The control method of the vehicle-mounted display device in the embodiment of the present application enables the vehicle-mounted display device to work in different display modes in a time-sharing manner, and by switching between different display modes, takes into account both the image display effect and the data processing burden; specifically, when the driving user is viewing the central control display area (that is, when the line of sight is located in the central control display area of ​​the vehicle-mounted display device), the image is displayed with a first color depth, and when the driving user is not viewing the central control display area of ​​the vehicle (that is, when the line of sight is not located in the central control display area of ​​the vehicle-mounted display device), the image is displayed with a second color depth; since the second color depth is less than the first color depth, when the image is displayed with the first color depth, an image with richer colors and higher contrast can be displayed, so as to assist the driving process of the driving user, and when the image is displayed with the second color depth, the amount of data processing can be reduced; therefore, the above-mentioned control method of the vehicle-mounted display device can reduce the data processing burden of the vehicle-mounted display device without affecting the driving user's viewing of the image. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a model of an application environment of the vehicle-mounted display device of the present application.

[0036] Figure 2 This is a simplified schematic diagram of the application environment of the vehicle-mounted display device of the present application.

[0037] Figure 3 This is a schematic flow chart of the steps of the control method of the vehicle-mounted display device of the first embodiment of the present application.

[0038] Figure 4 This is a flowchart of the steps of the control method of the vehicle-mounted display device of the second embodiment of the present application.

[0039] Figure 5 This is a flowchart of the steps of the control method of the vehicle-mounted display device of the third embodiment of the present application.

[0040] Figure 6 This is a flowchart of the steps of the control method of the vehicle-mounted display device of the fourth embodiment of the present application.

[0041] Figure 7 This is a schematic diagram of the module structure of the vehicle-mounted display device of this application. DETAILED DESCRIPTION

[0042] The following will describe in detail the specific implementation manners of the embodiments of the present application with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application.

[0043] The term "plurality" in the embodiments of the present application refers to two or more. In view of this, in the embodiments of the present application, "plurality" can also be understood as "at least two". "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " generally represents an "or" relationship between the associated objects before and after, unless otherwise specified. In addition, it should be understood that in the description of the embodiments of the present application, words such as "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0044] The in-vehicle display device of the embodiments of the present application is applied to a vehicle and includes a head-up display, an instrument display, a rearview mirror display, etc.

[0045] Specifically, please refer to Figure 1 、 Figure 2 , in the embodiments of the present application, the in-vehicle display device 100 is the display device assembly on the vehicle 10, and the in-vehicle display device 100 is installed on the center console in front of the front row seats of the vehicle and close to the vehicle steering wheel. The in-vehicle display device 100 provides at least two display forms, specifically including: a central control display area 110 provided in the central control area facing the driving user (but located in front of and below the horizontal position of the driving user's sight point 400, and the driving user needs to lower the head / turn the head to observe), and a head-up display area 200 formed on the vehicle screen or in front of the vehicle (at the natural observation position of the driving user's sight point 400) through the head-up display device 120.

[0046] On the one hand, the central control display area 110 is a display device on the central console such as a smart central control screen, an in-vehicle navigation display, or a smart instrument panel. Taking the smart central control screen as an example of the central control display area 110, it is used to display images, and the images may include vehicle condition information (such as fuel quantity, power, vehicle speed, mileage, etc.).

[0047] On the other hand, the head-up display device 120 at least includes: an image generation device, a correction mirror, a concave mirror, etc. An image is output through the image generation device 121 and projected onto the front windshield 300 of the vehicle 10 through the correction mirror 122, the concave mirror 123, etc. The image of the front windshield 300 enables the user to form a virtual image in front of the vehicle 10 in the visual effect, that is, the head-up display area 200.

[0048] In this embodiment, the in-vehicle display device 100 can implement multimedia functions (such as audio and video playback) through the central control display area 110 and the head-up display area 200. In other embodiments of the present application, the in-vehicle display device 100 can also support human-computer interaction functions (such as contact touch control, air gesture control, voice control, etc.).

[0049] As Embodiment 1, the specific content is as follows:

[0050] The present application also provides a control method for an in-vehicle display device. Please refer to Figure 3 , in this embodiment, the in-vehicle display device has a head-up display area 200 and a central control display area 110, and the specific control method includes:

[0051] Step S11, obtaining the current line-of-sight position of the driving user;

[0052] Step S12, determining whether the line-of-sight position of the driving user is located in the central control display area;

[0053] When the determination in step S12 is yes, that is, when the line-of-sight position of the driving user is located in the central control display area, execute step S13 to display an image in the central control display area with a first color depth;

[0054] When the determination in step S12 is no, that is, when the line-of-sight position of the driving user is not located in the central control display area, execute step S14 to display an image in the central control display area with a second color depth.

[0055] Wherein, the second color depth is less than the first color depth.

[0056] When driving a vehicle, the line of sight of the driving user is not fixed. The user may look at the front of the vehicle (such as looking at the road ahead of the vehicle, or looking at the virtual image formed by the head-up display in front of the vehicle, that is, the head-up display area 200), may also view the central control display area 110 at the vehicle console, or may look at the vehicle rearview mirror, etc.

[0057] If the central control display area 110 maintains high-quality display when not viewed by the driving user, it will cause unnecessary data processing volume for the image processor of the in-vehicle display device 100 and increase energy consumption at the same time. If the central control display area 110 is directly turned off when not viewed by the driving user, due to the delay when powering on next time, when the vehicle is in a driving state, especially at a high-speed driving state, it may bring danger due to the inability to obtain information in time. Moreover, when driving a vehicle, the line-of-sight switching of the driving user is relatively frequent and the switching speed is relatively fast, which will cause the central control display area 110 to turn on and off frequently, thus shortening the service life, or causing a startup delay and affecting driving safety.

[0058] Considering the above problems comprehensively, the present application responds to the line-of-sight switching of the driving user by switching the display mode of the central control display area 110. In this embodiment, the central control display area 110 operates in the first mode when being viewed by the user, and operates in the second mode with a lower data processing volume when there is no driving user viewing it. This can not only improve the technical problem of unnecessary increase in data processing volume, but also avoid the impact of directly shutting down on the service life of the central control display area 110 / vehicle-mounted display device 100 and the safe driving of the vehicle. At the same time, it can take into account the display effect, and further optimize the energy consumption of the vehicle-mounted display device.

[0059] In step S11, using the vehicle's built-in eye tracking system (not shown in the figure), according to the eye movement of the driving user, the current line-of-sight position of the driving user is obtained. In step S12, it is judged whether the current line-of-sight position of the driving user is located in the central control display area 110 of the vehicle-mounted display device 100. When the current line-of-sight position of the driving user is located in the central control display area 110 of the vehicle-mounted display device 100, it is considered that the driving user is viewing the image displayed in the central control display area 110 at this time, and then step S13 is executed. If it is judged that the current line-of-sight position of the driving user is not located in the central control display area 110 of the vehicle-mounted display device 100, it is considered that the driving user is not viewing the image displayed in the central control display area 110 at this time, and then step S14 is executed.

[0060] In step S13, because the driving user is viewing the image displayed in the central control display area 110, the central control display area 110 is displayed with the first color depth. In step S14, because the driving user is not viewing the image displayed in the central control display area 110, the central control display area 110 is displayed with the second color depth. Among them, the first color depth is greater than the second color depth, so that when the image is displayed with the first color depth, the color saturation of the image is higher, and an image with richer, more delicate colors and higher contrast can be presented. When the image is displayed with the second color depth, by sacrificing the color saturation of the image, the data processing volume of the vehicle-mounted display device 100 for the central control display area 110 is reduced. Since the driving user is not viewing, reducing the color saturation at this time will not affect the viewing effect of the driving user.

[0061] For the image processor of the central control display area 110, when displaying an image, it needs to process the image data of each pixel in the central control display area to control the display. During the period of displaying one frame of image, the data processing volume of the image processor can be roughly considered as the product of the number of all pixels in the central control display area and the color depth. Therefore, when the number of pixels remains unchanged, the data processing volume is mainly affected by the color depth.

[0062] Taking the first color depth of 24 bits and the second color depth of 8 bits as an example, in the cycle of displaying one frame of image, the data processing amount when displaying with the first color depth is 24*the number of pixels, and the data processing amount when displaying with the second color depth is 8*the number of pixels. It can be seen that by reducing the color depth, the data processing amount is reduced by two-thirds in the cycle of displaying one frame of image, which significantly reduces the burden on the image processor.

[0063] The display method of the above-mentioned vehicle-mounted display device 100 enables the central control display area 110 to work in the first mode and the second mode in a time-sharing manner. By switching between the first mode and the second mode, images are displayed in the first mode when necessary (i.e., when the driving user is watching). Since the data processing volume is larger in the first mode, images with higher color saturation and richer colors can be displayed to assist the driving process of the driving user. When it is not necessary (i.e., when there is no driving user watching), images are displayed in the second mode. Since the data processing volume is reduced in the second mode, the data processing burden of the vehicle-mounted display device 100 on the central control display area 110 can be reduced without affecting the driving user's viewing of the image. Moreover, compared with the method of directly turning off the central control display area 110 when there is no driving user watching, the above-mentioned display device control method avoids repeatedly turning on and off the central control display area 110, which is beneficial to prolonging the service life of the central control display area 110 on the one hand, and avoiding the bad driving experience caused by the power-on delay on the other hand. Moreover, for the mode of turning on high-quality image display all the time, the above-mentioned automatic switching function can also take into account the energy-saving effect.

[0064] As Example 2, its specific contents are as follows:

[0065] The control method of the vehicle display device of this embodiment is different from that of the first embodiment in that the display modes in the first mode and the second mode are different. Specifically, when the driver is not viewing the central control display area 110, the data processing amount of the image processor can be reduced by reducing the display frequency.

[0066] See also Figure 4 , the control method of the vehicle-mounted display device of this embodiment includes:

[0067] Step S21, obtaining the current sight line position of the driving user;

[0068] Step S22, determining whether the sight line position of the driving user is located in the central control display area of ​​the vehicle-mounted display device;

[0069] If the judgment in step S22 is yes, that is, the sight line of the driving user is located in the central control display area, step S23 is executed to display an image in the central control display area with a first color depth and a first frequency;

[0070] When the judgment in step S22 is negative, that is, when the line-of-sight position of the driving user is not located in the center control display area, step S24 is executed to display an image in the center control display area with a second color depth and a second frequency.

[0071] Wherein, the first frequency is greater than the second frequency.

[0072] The above-mentioned first frequency and second frequency refer to the frequency at which the center control display area 110 refreshes the image. The higher the frequency, the more images will be refreshed within the same time period. During the driving process of the vehicle, the vehicle condition is constantly changing, and the image in the center control display area 110 also continuously refreshes and changes when displaying the image, so as to display accurate vehicle condition information for the driving user in real time and assist the driving behavior of the driving user.

[0073] When the driving user is viewing the center control display area 110, the image is displayed at a higher first frequency, the picture switching is smoother, and more accurate real-time information can be obtained. When the driving user is not viewing the center control display area 110, the image is displayed at a lower second frequency to reduce the data processing volume of the image processor.

[0074] In a display cycle (1 second), on the basis that other factors remain unchanged, the data processing volume can be generally considered to depend on the display frequency. Taking the first frequency as 120HZ and the second frequency as 60HZ as an example, when the first frequency is reduced to the second frequency, the data processing volume can be directly halved.

[0075] Moreover, even if the first frequency is reduced to the second frequency, that is, the frequency is halved, a good display effect can still be maintained, which can meet the basic display requirements.

[0076] The control method of the in-vehicle display device in this embodiment can achieve all the beneficial effects of the display method in Embodiment 1. On this basis, the data processing volume of the image processor can be further reduced.

[0077] As Embodiment 3, its specific content is as follows:

[0078] In the aforementioned Embodiment 1, it mainly considers whether the driving user is currently viewing the center control display area 110 to control the display mode (displaying with the first color depth or the second color depth). In this embodiment, on the basis of considering whether the driving user is currently viewing the center control display area 110, the application scenario (in-vehicle) of the in-vehicle display device is further considered, and the display mode is also controlled according to the vehicle condition information.

[0079] Specifically, please refer to Figure 5 , the control method of the in-vehicle display device in this embodiment includes the following steps:

[0080] Step S31, obtaining the current line-of-sight position and the current vehicle speed of the driving user;

[0081] Step S32: Determine whether the line-of-sight position of the driving user is within the central control display area of the in-vehicle display device;

[0082] When the determination in step S32 is yes, that is, when the line-of-sight position of the driving user is within the central control display area, execute step S33 to display an image in the central control display area with a first color depth;

[0083] When the determination in step S32 is no, that is, when the line-of-sight position of the driving user is not within the central control display area, execute step S34 to determine whether the current vehicle speed is greater than a preset vehicle speed;

[0084] When the determination in step S34 is yes, that is, when the current vehicle speed is greater than the preset vehicle speed, execute the above step S33. When the determination in step S34 is no, that is, when the current vehicle speed is less than or equal to the preset vehicle speed, execute step S35 to display an image in the central control display area with a second color depth.

[0085] In this embodiment, the vehicle condition information is the vehicle speed. In this embodiment, the preset vehicle speed is set to 60 km / h, for example.

[0086] In step S34, if it is determined that the current vehicle speed is greater than the preset vehicle speed, it is considered that the vehicle is in a high-speed driving state at this time. Then, in order to reserve sufficient reaction time for the driving user, even if the current driving user is not viewing the central control display area 110, the display mode of the central control display area 110 is not switched, and the image is continuously displayed with the first color depth. In this way, it is beneficial to improve driving safety.

[0087] When it is determined in step S34 that the current vehicle speed is less than or equal to the preset vehicle speed, it is considered that the vehicle is in a low-speed driving state at this time, and the driving user has sufficient reaction time. Then, when the current driving user is not viewing the central control display area 110, the display mode with a lower data processing amount can be switched, that is, switched from the first color depth to the second color depth, reducing the data processing amount of the image processor.

[0088] The control method of the in-vehicle display device in this embodiment can achieve all the beneficial effects described in Embodiment 1. On this basis, by determining whether to switch the display mode under different vehicle speeds, it is also beneficial to improve driving safety.

[0089] In the variant embodiment of this implementation, the central control display area 110 displays images at different frequencies in the first mode and the second mode. Refer to Embodiment 2 for details. Specifically, in this variant embodiment, step S33 is: displaying an image in the central control display area at a first color depth and a first frequency; step S35 is: displaying an image in the central control display area at a second color depth and a second frequency. Wherein the first color depth is greater than the second color depth, and the first frequency is greater than the second frequency. Therefore, the control method of the in-vehicle display device in this variant embodiment can also achieve all the beneficial effects in Embodiment 2. On this basis, by judging whether to switch the display mode under different vehicle speeds, it is also beneficial to improve driving safety.

[0090] As Embodiment 4, its specific content is as follows:

[0091] In the foregoing Embodiment 1, it mainly considers whether the driving user is currently viewing the central control display area 110 to control the display mode (displaying at the first color depth or the second color depth). In this embodiment, on the basis of considering whether the driving user is currently viewing the central control display area 110, the application scenario of the in-vehicle display device (in-vehicle) is further considered, and the display mode is also controlled according to the road condition information.

[0092] Specifically, please refer to Figure 6 , the control method of the in-vehicle display device in this embodiment includes the following steps:

[0093] Step S41, obtaining the current line-of-sight position and the current ambient brightness of the driving user;

[0094] Step S42, judging whether the line-of-sight position of the driving user is located in the central control display area of the in-vehicle display device;

[0095] When the judgment in step S42 is yes, that is, when the line-of-sight position of the driving user is located in the central control display area, step S43 is executed to display an image in the central control display area at a first color depth;

[0096] When the judgment in step S42 is no, that is, when the line-of-sight position of the driving user is not located in the central control display area, step S44 is executed to judge whether the current ambient brightness is less than or equal to a first preset brightness;

[0097] When the judgment in step S44 is yes, that is, when the current ambient brightness is less than or equal to the first preset brightness, the above step S43 is executed. When the judgment in step S44 is no, that is, when the current ambient brightness is greater than the first preset brightness, step S45 is executed to display an image in the central control display area at a second color depth.

[0098] In this embodiment, the road condition information is the ambient brightness. In step S44, if it is determined that the current ambient brightness is less than or equal to the first preset brightness, it is considered that the vehicle is driving in a dark environment at this time, and the visibility of the driving environment is low. Then, in order to reserve sufficient reaction time for the driving user and also to improve the image visibility, even if the current driving user does not view the central control display area 110, the display mode of the central control display area 110 is not switched, and the image is continuously displayed with the first color depth. In this way, it is beneficial to improve driving safety.

[0099] When it is determined in step S44 that the current ambient brightness is greater than the first preset brightness, it is considered that the visibility of the driving environment is high at this time. Then, when the current driving user does not view the central control display area 110, the display mode with a lower data processing amount can be switched, that is, switched from the first color depth to the second color depth, reducing the data processing amount of the image processor.

[0100] The control method of the in-vehicle display device in this embodiment can achieve all the beneficial effects described in the first embodiment as mentioned above. On this basis, by judging whether to switch the display mode under different ambient brightness conditions, it is also beneficial to improve driving safety.

[0101] In the modified embodiment of this implementation, the central control display area 110 displays images at different frequencies in the first mode and the second mode. Refer to Embodiment 2. Specifically, in this modified embodiment, step S43 is: displaying an image in the central control display area with the first color depth and the first frequency; step S45 is: displaying an image in the central control display area with the second color depth and the second frequency. Wherein the first color depth is greater than the second color depth, and the first frequency is greater than the second frequency. Therefore, the control method of the in-vehicle display device in this modified embodiment can also achieve all the beneficial effects in Embodiment 2. On this basis, by judging whether to switch the display mode under different vehicle speeds, it is also beneficial to improve driving safety.

[0102] As a preferred embodiment, in the above control method of the in-vehicle display device, after step S45, it further includes:

[0103] Step S46, judging whether the current ambient brightness is greater than a second preset brightness;

[0104] If the judgment in step S46 is yes, that is, when the current ambient brightness is greater than the second preset brightness, step S47 is executed to display an image in the central control display area with the first color depth and the first frequency; wherein, the second preset brightness is greater than the first preset brightness.

[0105] In this embodiment, the brightness range between the first preset brightness and the second preset brightness is the normal ambient brightness that the driving user can receive. When the current ambient brightness is within this brightness range, the image is displayed in the central control display area at the second color depth and the second frequency according to step S45, maintaining an image output mode with a relatively low data processing volume. However, after the current ambient brightness (mainly referring to the brightness of the light coming through the front windshield) exceeds the second preset brightness, it is considered that the current ambient brightness is higher than the ambient brightness range in which the driving user can drive comfortably. At this time, the driver's eyes will feel uncomfortable and it is difficult to keep looking straight ahead for a long time. Therefore, to ensure driving safety, to reserve sufficient reaction time for the driving user, and to improve the visibility of the image, even if the current driving user is not looking at the central control display area 110, the central control display area 110 is adjusted to the first color depth and the first color frequency.

[0106] As another preferred embodiment, in the above control method of the in-vehicle display device, as a further optimization of step S47, after step S45, it further includes:

[0107] Step S48, when the line-of-sight position of the driving user is not in the central control display area and the duration for which the current ambient brightness is greater than the second preset brightness exceeds the first preset duration, an image is displayed in the central control display area at the third color depth and the third frequency; wherein, the third color depth is greater than the first color depth and the third frequency is greater than the first frequency;

[0108] Step S49, when the line-of-sight position of the driving user is not in the central control display area and the current ambient brightness is greater than the third preset brightness, an image is displayed in the central control display area at the third color depth and the third frequency; wherein, the third preset brightness is greater than the second preset brightness.

[0109] In this embodiment, the third preset brightness (mainly referring to the brightness of the light coming from the front windshield) is further greater than the second preset brightness. The basis for setting the third preset brightness is that if it is greater than the third preset brightness, it will have a greater impact on the forward vision of the driving user to a certain extent. For example, sunlight backflow and strong light direct irradiation; strong oncoming light will cause the pupil of the driving user's eyes to shrink, making the retinal cells of the eyeball in strong light. When the eyes no longer look at bright objects, the pupil has not had time to expand, the light entering the eyeball decreases, and the eyes will feel that the field of vision is very dark, such as having a black shadow in front of the eyes. This phenomenon is also called the "persistence of vision phenomenon". At this time, to ensure driving safety and give the driving user sufficient reaction time, and at the same time ensure that more light can enter the pupil of the driving user, therefore, in step S49, the central control display area is displayed in the image with the third color depth (greater than the first color depth) and the third frequency (greater than the first color depth). Similarly, if the duration of the current ambient brightness being greater than the second preset brightness exceeds the first preset duration, although the light intensity is not as high as the third preset brightness, the driving user's eyes are placed in strong light for a long time, which is prone to fatigue, presbyopia, and also prone to the persistence of vision phenomenon. Therefore, also in step S48, the central control display area is displayed in the image with the third color depth and the third frequency. Among them, the first preset duration can be determined through experiments or set by the driving user himself. Generally speaking, it is more appropriate to set it at about 5s, specifically depending on the user's sensitivity to light.

[0110] In at least one alternative embodiment of the present application, the in-vehicle display 100 does not immediately switch the display mode of the central control display area after meeting the judgment conditions for switching the display mode described in the foregoing embodiments. Instead, it switches the display mode of the central control display area after maintaining a preset duration when meeting the judgment conditions. The preset duration is, for example, 2 seconds.

[0111] Specifically, in this at least one alternative embodiment, steps S12 of Embodiment 1, steps S22 of Embodiment 2, steps S32 of Embodiment 3, and steps S42 of Embodiment 4 are specifically: determining whether the duration of the line-of-sight position of the driving user being located in the central control display area of the in-vehicle display device is greater than the second preset duration; if the judgment is yes, that is, when the duration of the line-of-sight position of the driving user being located in the display area is greater than the second preset duration, the image is displayed in the display area with the first color depth and the first frequency.

[0112] Since the movement of the gaze position of the driving user is not necessarily for switching to view different in-vehicle display devices, the line of sight may inadvertently sweep across the center control display area 110 of the in-vehicle display device 100 during the movement. Therefore, when the duration for which the gaze position of the driving user remains in the center control display area 110 is greater than the second preset duration, it is considered that the driving user is observing the image displayed in the center control display area 110. Therefore, the control method of the in-vehicle display device in this at least one change embodiment helps to avoid accidentally triggering the switching of the display mode of the center control display area.

[0113] During the process of driving a vehicle, the gaze position of the driving user is mostly in front of the vehicle, for example, viewing the virtual image 200 displayed on the head-up display. The time when the gaze position is located on the intelligent instrument panel / instrument display, the intelligent center control screen, and the in-vehicle navigation display is relatively less. Therefore, when the in-vehicle display device 100 executes the above control method, the effect of reducing the data processing amount and the burden on the image processor is more significant.

[0114] In the above embodiments of the present application, parameters such as the preset vehicle speed, the first preset duration, the first preset brightness, the second preset brightness, and the third preset brightness can all be set according to the tests of automobile manufacturers. In actual vehicles, the behavior, state, posture, etc. of the driver can be further detected through DMS (Driver Monitor System), and adjusted through an autonomous learning model / system. When adjusting, a personal profile can be established for different driving users, the identity of the driving user can be recognized each time the vehicle is started, and the driving data of this time can be recorded in their personal profile as the training data of the autonomous learning model / system.

[0115] This embodiment also provides a computer storage medium, in which computer instructions are stored. When the computer instructions are read and run by the image processor, the method steps in the above control method of the in-vehicle display device are executed.

[0116] Please refer to Figure 7 , the in-vehicle display device 100 provided in the embodiment of the present application includes an image processor 11 and a memory 12. Among them, the memory 12 is used to store computer execution instructions. When the in-vehicle display device 100 runs, the image processor 11 can execute the computer execution instructions stored in the memory 12, so that the in-vehicle display device 100 executes the steps of the control method of the in-vehicle display device 100 in the above various method embodiments. In at least one embodiment of the present application, the image processor 310 is an ESP32 chip.

[0117] Among them, the beneficial effects that can be achieved by the in-vehicle display device 100 and the storage medium provided in this embodiment can refer to the beneficial effects in the display method based on the in-vehicle display device 100 provided above, and will not be elaborated here.

[0118] Essentially, or the part that contributes to the prior art, or all or part of the technical solution of the embodiments of this application can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions for causing a device (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the methods of the embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0119] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate this application, rather than to limit this application. As long as within the scope of the essential spirit of this application, appropriate changes and variations made to the above embodiments fall within the scope of protection required by this application.

Claims

1. A method for controlling a vehicle-mounted display device, characterized in that: The vehicle-mounted display device has a head-up display area and a central control display area; the control method includes: Get the current sight position of the driving user; When the sight line position of the driving user is located in the central control display area, displaying an image in the central control display area with a first color depth; and When the sight line position of the driving user is not located in the central control display area, the image is displayed in the central control display area with a second color depth, and the second color depth is less than the first color depth; When the sight line position of the driving user is located in the central control display area, the step of displaying an image in the central control display area with a first color depth specifically includes: When the sight line position of the driving user is located in the central control display area, displaying an image in the central control display area with a first color depth and a first frequency; When the sight line position of the driving user is not located in the central control display area, the step of displaying an image in the central control display area with a second color depth specifically includes: When the sight line position of the driving user is not located in the central control display area, displaying an image in the central control display area with a second color depth and a second frequency, wherein the second frequency is less than the first frequency; The step of obtaining the current sight line position of the driving user specifically includes: Get the current sight position and vehicle speed of the driving user; When the sight line position of the driving user is not located in the central control display area, the step of displaying an image in the central control display area with a second color depth and a second frequency includes: When the sight line position of the driving user is not located in the central control display area and the current vehicle speed is less than or equal to the preset vehicle speed, displaying an image in the central control display area with the second color depth and the second frequency; When the sight line position of the driving user is not located in the central control display area and the current vehicle speed is greater than a preset vehicle speed, an image is displayed in the central control display area with a first color depth and a first frequency.

2. The control method of the vehicle-mounted display device according to claim 1, characterized in that: The step of obtaining the current sight line position of the driving user specifically includes: Get the current sight line position and current ambient brightness of the driving user; When the sight line position of the driving user is not located in the central control display area, the step of displaying an image in the central control display area with a second color depth and a second frequency includes: When the sight line position of the driving user is not located in the central control display area and the current ambient brightness is greater than the first preset brightness, an image is displayed in the central control display area with a second color depth and a second frequency; When the driving user's line of sight is not located in the central control display area and the current ambient brightness is less than or equal to the first preset brightness, an image is displayed in the central control display area with the first color depth and the first frequency.

3. The control method of the vehicle-mounted display device according to claim 2, characterized in that: When the sight line position of the driving user is not located in the central control display area and the current environment brightness is greater than the first preset brightness, after the step of displaying an image in the central control display area with the second color depth and the second frequency, the method further includes: When the driving user's line of sight is not located in the central control display area and the current ambient brightness is greater than a second preset brightness, an image is displayed in the central control display area with a first color depth and a first frequency; wherein the second preset brightness is greater than the first preset brightness.

4. The control method of the vehicle-mounted display device according to claim 3, characterized in that: When the sight line position of the driving user is not located in the central control display area and the current environment brightness is greater than the first preset brightness, after the step of displaying an image in the central control display area with the second color depth and the second frequency, the method further includes: When the driving user's line of sight is not located in the central control display area, and the duration of the current ambient brightness being greater than the second preset brightness exceeds the first preset duration, an image is displayed in the central control display area with a third color depth and a third frequency; wherein the third color depth is greater than the first color depth, and the third frequency is greater than the first frequency.

5. The control method of the vehicle-mounted display device according to claim 4, characterized in that: When the sight line position of the driving user is not located in the central control display area and the current environment brightness is greater than the first preset brightness, after the step of displaying an image in the central control display area with the second color depth and the second frequency, the method further includes: When the driving user's line of sight is not located in the central control display area and the current ambient brightness is greater than a third preset brightness, an image is displayed in the central control display area with a third color depth and a third frequency; wherein the third preset brightness is greater than the second preset brightness.

6. The control method of the vehicle-mounted display device according to claim 1, characterized in that: When the sight line position of the driving user is located in the central control display area, the step of displaying an image in the central control display area with a first color depth and a first frequency specifically includes: When the driving user's line of sight is located in the central control display area for a period longer than a second preset period, an image is displayed in the central control display area with a first color depth and a first frequency.

7. A storage medium, characterized in that: A computer program is stored, and when the computer program is read, the steps of the control method of the vehicle-mounted display device according to any one of claims 1 to 6 are implemented.

8. A vehicle-mounted display device, characterized in that: The device comprises an image processor and a memory, wherein the memory stores a computer program, and when the computer program is read by the image processor, the image processor executes the steps of the control method of the vehicle-mounted display device according to any one of claims 1 to 6.

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