CN221162235U

CN221162235U - Display system, vehicle and cabin system

Info

Publication number: CN221162235U
Application number: CN202322650154.2U
Authority: CN
Inventors: 吴庆利; 方志方; 王骏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-06-18
Anticipated expiration: 2033-09-27

Abstract

The present application provides a display system, vehicle and cabin system that may be used on a vehicle, such as in a seat back, seat headrest or passenger cabin. The display system provided by the application can provide display effects of different brightness of the viewer according to the ambient light, the temperature and the user operation of the display device, and the user experience is improved. The display system includes an ambient light sensor and a display device coupled to the ambient light sensor. The ambient light sensor is used for acquiring first brightness information and sending the first brightness information to the display device, wherein the first brightness information is used for indicating the brightness of ambient light where the display device is located. The display device is used for adjusting the brightness of the generated virtual image according to the first brightness information.

Description

Display system, vehicle and cabin system

Technical Field

The embodiment of the application relates to the technical field of display and intelligent automobile driving, and more particularly relates to a display system, a vehicle and a cabin system.

Background

Automobiles become an indispensable transportation means for people's daily life, and along with the intelligent development of automobiles, the application demands of people for automobiles are promoted from simple transportation means to living spaces with certain information acquisition and entertainment enjoyment, wherein the vehicle-mounted display technology becomes a popular research direction. By installing the vehicle-mounted display device in the automobile, passengers in the automobile can acquire information or perform activities such as entertainment and video through the vehicle-mounted display device, so that an intelligent application scene of the cabin space is provided.

How to adjust the brightness of the virtual image displayed by the display device, so as to improve the user experience while ensuring the performance of the display device is a problem to be solved.

Disclosure of utility model

The application provides a display system, a vehicle and a cabin system. The display system provided by the application can provide display effects of different brightness of the viewer according to the ambient light, the temperature and the user operation of the display device, and the user experience is improved.

In a first aspect, an embodiment of the present application provides a display system. The system may be used for in-vehicle display, the display system comprising an ambient light sensor and a display device, the ambient light sensor being connected to the display device. The ambient light sensor is used for acquiring first brightness information and sending the first brightness information to the display device, wherein the first brightness information is used for indicating the brightness of ambient light where the display device is located; the display device is used for adjusting the brightness of the generated virtual image according to the first brightness information, wherein the display device comprises an image generation unit, a window unit and an image amplifying unit, the image generation unit is used for emitting image light to the window unit, the window unit is used for reflecting the image light from the image generation unit to the image amplifying unit and transmitting the image light from the image amplifying unit, the window unit is also used for viewing the virtual image formed by the image light through the window unit by human eyes, and the image amplifying unit is used for reflecting the image light from the window unit to the window unit.

Based on the scheme, the display system provided by the application can realize automatic adjustment of the brightness of the virtual image according to different ambient light brightness, and provides more intelligent experience for users.

With reference to the first aspect, in certain implementations of the first aspect, the ambient light sensor is disposed on a housing of the display device.

With reference to the first aspect, in certain implementation manners of the first aspect, the display system further includes: the display device is connected with the temperature sensor, and the temperature sensor is used for acquiring temperature information and sending the temperature information to the display device, wherein the temperature information is used for indicating the temperature of the image generation unit; the display device is specifically configured to: and adjusting the brightness of the generated virtual image according to the first brightness information and the temperature information.

Based on the scheme, the display system provided by the application can automatically adjust the brightness of the virtual image according to different ambient light brightness and the temperature of the image generating unit, so that the stability of the system performance is ensured.

With reference to the first aspect, in certain implementations of the first aspect, the temperature sensor is arranged on the image generation unit.

With reference to the first aspect, in certain implementation manners of the first aspect, the display system further includes: control means for generating second luminance information for indicating viewing luminance desired by a user, and transmitting the second luminance information to the display means; the display device is specifically configured to: and adjusting the brightness of the generated virtual image according to the first brightness information, the temperature information and the second brightness information.

Based on the scheme, the display system provided by the application can also consider the difference of the brightness of the user, thereby ensuring the rationality of the brightness adjustment of the virtual image and further improving the user experience.

With reference to the first aspect, in certain implementation manners of the first aspect, the control device is electrically connected to the display device, and the second brightness information is carried in an electrical signal.

With reference to the first aspect, in certain implementations of the first aspect, the control device is disposed on a housing of the display device.

With reference to the first aspect, in certain implementation manners of the first aspect, the control device is wirelessly connected to the display device, and the second brightness information is carried in a wireless signal.

In a second aspect, embodiments of the present application provide a vehicle comprising a display system as in the first aspect and various implementations thereof.

With reference to the second aspect, in certain implementations of the second aspect, the display system is disposed at least one of a headrest of a seat of the vehicle, a back of the seat of the vehicle, and a passenger cabin of the vehicle.

In a third aspect, embodiments of the present application provide a cabin system comprising a display system as in the first aspect and various implementations thereof.

Drawings

Fig. 1 is a schematic diagram of an application scenario of an intelligent cockpit display system 100 according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a display device 200 according to an embodiment of the application.

Fig. 3 is a schematic structural diagram of a first display system 300 according to an embodiment of the application.

Fig. 4 is a schematic structural diagram of a second display system 400 according to an embodiment of the application.

Fig. 5 is a schematic structural diagram of a third display system 500 according to an embodiment of the application.

Fig. 6 is a schematic structural diagram of a fourth display system 500 according to an embodiment of the application.

Fig. 7 is a schematic structural diagram of two control devices according to an embodiment of the present application.

Fig. 8 is a schematic circuit diagram of a display device according to an embodiment of the application.

Fig. 9 is a schematic diagram of a possible functional framework of a vehicle according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

The following description is made in order to facilitate understanding of embodiments of the present application.

The words "first", "second", etc. and various numerical numbers in the first, the text description of the embodiments of the application shown below or in the drawings are merely for descriptive convenience and are not necessarily for describing particular sequences or successes and are not intended to limit the scope of the embodiments of the application. For example, different brightness of virtual images, etc.

The terms "comprises," "comprising," and "having," in the context of the second, following illustrated embodiment of the present application, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements expressly listed but may include other elements not expressly listed or inherent to such article or apparatus.

Third, in embodiments of the application, the words "exemplary" or "such as" are used to mean examples, illustrations, or descriptions, and embodiments or designs described as "exemplary" or "such as" should not be construed as being preferred or advantageous over other embodiments or designs. The use of the word "exemplary" or "such as" is intended to present the relevant concepts in a concrete fashion to facilitate understanding.

Fourth, in the embodiment of the present application, image light refers to light carrying an image (or image information) for generating an image.

Fifth, in the drawings of the present application, the thickness, size, and shape of each optical element have been slightly exaggerated for convenience of explanation. In particular, the optical element shapes shown in the drawings are shown by way of example and are merely examples and are not drawn to scale.

Sixth, unless otherwise defined, all terms (including technical and scientific terms) used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Seventh, unless otherwise specified as a horizontal angle of view or a vertical angle of view, in the description of the present application, the angle of view of the display device refers to an angle corresponding to a diagonal length of a display image.

With the rapid development of intelligent automobiles, automobiles play an increasing role in the life of people, and the demand for vehicle-mounted displays is increasing, for example, entertainment services such as games, viewing and the like are provided for long-time passengers. Or to provide a private office display environment for office personnel, etc.

In order to provide the vehicle display function, it is a common solution to directly mount the display screen, for example, a Liquid Crystal Display (LCD) may be hung on a vehicle roof or placed on a back of a seat, etc. for the person in the vehicle to use, however, the brightness of such an LCD is usually fixed and cannot be adjusted.

In view of this, the present application provides a display system, which can adapt to different ambient temperatures and ambient brightness and meet different individual requirements, thereby improving user experience.

Fig. 1 is a schematic diagram of an application scenario of an intelligent cockpit display system 100 according to an embodiment of the present application. As shown in fig. 1, the intelligent cockpit display system 100 includes at least one display device 101 disposed on a back of a seat 102 and at least one seat 102, and fig. 1 illustrates one display device and one seat. The display device 101 can generate a remote enlarged virtual image through input of an external video signal (also referred to as a signal source), and provide a large-scale and remote visual experience for a viewer, so as to meet the requirements of various application scenes such as leisure and entertainment of passengers, business offices, and the like. The display device 101 may be mounted on the back of the seat 102 before leaving the factory, or mounted on the back of the seat 102 by retrofitting the seat 102 after leaving the factory.

It is understood that the intelligent cockpit display system 100 may be applied to vehicles including, but not limited to: cars, trucks, buses, boats, planes, helicopters, recreational vehicles, trains, and the like. The display device 101 may be mounted on a headrest of a seat or in a passenger desk before shipment, or the display device 101 may be mounted on a headrest of a seat after shipment by retrofitting a seat and in a passenger desk by retrofitting a passenger desk.

It should be noted that the display system provided by the present application may be applied to the intelligent cockpit display system 100 shown in fig. 1, but the embodiment of the present application is not limited thereto, and may be other similar systems including the intelligent cockpit display system 100 shown in fig. 1. The display system provided by the application is described in detail below.

Fig. 2 is a schematic structural diagram of a display device 200 according to an embodiment of the present application, and the display device 200 can be applied to the cabin virtual image display system shown in fig. 1. As shown in fig. 2, the display device 200 is arranged in order along the transmission direction of image light as an image generating unit 201, a window unit 202, and an image enlarging unit 203. Wherein the image generating unit 201 is configured to emit image light to the window unit. The window unit 202 is for reflecting the image light from the image generating unit 201 to the image amplifying unit 203 and transmitting the image light from the image amplifying unit 203, and the window unit 202 is also for viewing a virtual image formed by the image light through the window unit 202 by the human eye. The image magnifying unit 203 is configured to reflect the image light from the window unit 1002 to the window unit 202.

Alternatively, the image generating unit 201 may employ a Liquid Crystal Display (LCD) display, a liquid crystal on silicon (liquid crystal on silicon, LCOS) display, an Organic Light-Emitting Diode (OLED) display, a Micro-Light-Emitting Diode (Micro-LED) display, a display employing the display technology of miniLED, a digital Light processing (DIGITAL LIGHT Procession, DLP) display, or a Micro-Electro-MECHANICAL SYSTEMS, MEMS (Micro-Electro-MECHANICAL SYSTEMS, MEMS) display, etc., which are not limited by the present application.

Alternatively, the image magnification unit 203 is a free-form surface mirror.

Specifically, when the user views a video image using the display device 200, the image generating unit 201 emits image light to the window unit 202, the image light is reflected by the window unit 202 and then is incident on the image amplifying unit 203, and is reflected again by the image amplifying unit 203 and then is incident on the window unit 202, and the window unit 202 is transmitted, and at this time, the user can see a large picture located at a distance through the window unit 202.

Fig. 3 is a schematic structural diagram of a display system 300 according to an embodiment of the application. As shown in fig. 3, the display system 300 includes the display device 200 and the ambient light sensor 310, and the display system 300 may be applied to the vehicle-mounted display system 100 shown in fig. 1. Wherein the ambient light sensor is connected to the display device 200. Specifically, the ambient light sensor 310 is configured to acquire first luminance information, and send the first luminance information to the display device 200, where the first luminance information is used to indicate the luminance of the ambient light where the display device 200 is located. The display device 200 is configured to adjust the luminance of the generated virtual image according to the first luminance information.

Alternatively, the ambient light sensor 310 is electrically connected to the display device 200, for example, via a printed circuit board (printed circuit board, PCB) or cable. The ambient light sensor 310 is connected to the display device 200 by wireless means, for example, via a wireless local area network (Wireless Local Area Network, WLAN) or bluetooth device.

Alternatively, the ambient light sensor 310 is arranged on the housing of the display device 200, for example, in fig. 3, the ambient light sensor 310 is mounted at the bottom of the housing below the window unit 202. Or the ambient light sensor 310 is disposed at a position near the display device 200, for example, if the display device 200 is disposed on the back of a seat, the ambient light sensor 310 may be disposed on the back of the seat near the display device 200, or on the headrest near the display device 200, or the like. When the ambient light sensor 310 is not mounted on the housing of the display device 200, the ambient light sensor 310 may be a sensor in the cabin for acquiring ambient light of the cabin or a sensor configured specifically for the display device 200, which is not limited by the present application.

Specifically, the first luminance information acquired by the ambient light sensor 310 may be represented by an illumination intensity (Illuminance) or a luminance (Brightness), or the like.

When the first luminance information is expressed in terms of illumination intensity, the illumination intensity of the ambient light transmitted from the ambient light sensor 310 to the display device 200 may be an actual illumination intensity, or a variation of illumination intensity, or the like. For example, if the illumination intensity of the ambient light transmitted from the ambient light sensor 310 to the display device 200 at the previous time is 5lx, the ambient light sensor 310 transmits the updated illumination intensity of 8lx to the display device 200 when the ambient light intensity becomes stronger. That is, the ambient light sensor 310 indicates the brightness of the illumination intensity by the magnitude of the illumination intensity, and the higher the illumination intensity, the brighter the ambient light. Or ambient light sensor 310 sends the amount of change in illumination intensity Δi to display device 200. For example, when Δi is a positive number, it indicates that the ambient light is bright, Δi is an increase amount with respect to the threshold illumination intensity, and when Δi is a negative number, it indicates that the ambient light is dark, Δi is a decrease amount with respect to the threshold illumination intensity. Wherein the threshold illumination intensity may be preset in the display device 200 and the ambient light sensor 310.

Similarly, when the first luminance information is expressed as a luminance, the luminance of the ambient light transmitted from the ambient light sensor 310 to the display device 200 may be the actual luminance, or the change amount of the luminance, etc. For example, if the brightness of the ambient light sent by the ambient light sensor 310 to the display device 200 at the previous time is 6cd/m ², when the brightness of the ambient light becomes stronger, the brightness of the ambient light sent by the ambient light sensor 310 to the display device 200 after updating is 10cd/m ². That is, ambient light sensor 310 represents brightness by the magnitude of the brightness, with greater brightness representing brighter ambient light. Or the ambient light sensor 310 sends the amount of change Δb in light intensity to the display device 200. For example, when Δb is a positive number, it indicates that the ambient light is bright, Δb is an increase in luminance relative to the threshold value, and when Δb is a negative number, it indicates that the ambient light is dark, Δb is a decrease in luminance relative to the threshold value. Wherein the threshold light brightness may be preset in the display device 200 and the ambient light sensor 310.

Specifically, after the ambient light sensor 310 acquires the first luminance information, an electrical signal or a wireless signal carrying the first luminance information is generated, and the electrical signal or the wireless signal carrying the first luminance information is sent to the display device 200, so that the display device 200 controls the luminance of the image light of the image generating unit 201 according to the first luminance information, thereby realizing the luminance control of the virtual image generated by the display device 200.

In some embodiments, the correspondence between the first luminance information and the Duty Cycle (Duty Cycle) of the PWM as shown in table 1 may be preset in the display device 200, and the Duty Cycle of the PWM of the image generating unit 201 under the specific first luminance information is determined according to the correspondence, so that the control of the image generating unit 201 is achieved by changing the Duty Cycle of the PWM of the image signal, and the purpose of adjusting the luminance of the image generating unit 201 is achieved. The duty ratio of the PWM of the image generating unit 201 may be understood as the pulse width of the medium image signal or as the ratio of the high level time of the image signal to the total time of one cycle.

TABLE 1

First brightness information (taking illumination intensity as an example)	Duty cycle of PWM
		≥30000lx	100％
20000lx	80％
		10000lx	60％
5000lx	50％
		≤3000lx	10％

It is understood that table 1 is a correspondence relationship between the illumination intensity and the duty ratio of PWM, which is shown with the first luminance information as the illumination intensity. When the first luminance information is luminance, table 1 may also be a correspondence relationship between the luminance and the duty ratio of PWM. It should be noted that, table 1 is only an example and not a limitation, for example, table 1 may also be a correspondence relationship between a range of illumination intensity or brightness and a duty ratio, and after the display device 200 obtains the illumination intensity or brightness value from the electrical signal, the duty ratio of the corresponding PWM is determined according to the illumination intensity or brightness range in which the illumination intensity or brightness value is located.

In other embodiments, the correspondence between the first luminance information and the PWM control value shown in table 2 may be preset in the display device 200, and the PWM control value of the image generating unit 201 under the specific first luminance information is determined according to the correspondence, so that by changing the PWM control value of the image signal, the change of the duty ratio of the PWM of the image signal is achieved, the control of the image generating unit 201 is achieved, and the purpose of adjusting the luminance of the image generating unit 201 is further achieved.

TABLE 2

First brightness information (taking illumination intensity as an example)	Control value of PWM
		≥30000lx	255
20000lx	205
		10000lx	154
5000lx	127
		≤3000lx	25

Table 2 shows the correspondence between the illumination intensity and the PWM control value, which is shown by using the first luminance information as the illumination intensity. When the first brightness information is brightness, table 2 may also be a correspondence between brightness and a control value of PWM. It should be noted that, table 2 is only an example and not a limitation, for example, table 2 may also be a correspondence relationship between a range of illumination intensity or brightness and a duty ratio, and after the display device 200 obtains the illumination intensity or brightness value from the electrical signal, the control value of the corresponding PWM is determined according to the illumination intensity or brightness range where the illumination intensity or brightness value is located.

In still other embodiments, when the image generating unit 201 employs an LED light source (for example, the backlight of the LCD display is an LED light source), the correspondence between the first luminance information and the operating current as shown in table 3 may be preset in the display device 200, and the operating current of the image generating unit 201 under specific first luminance information may be determined according to the correspondence, so that the control of the image generating unit 201 is achieved by changing the operating current of the image signal, and thus the purpose of adjusting the luminance of the image generating unit 201 is achieved.

TABLE 3 Table 3

First brightness information (taking illumination intensity as an example)	LED operating current
		≥30000lx	85mA
20000lx	68mA
		10000lx	50mA
5000lx	40mA
		≤3000lx	10mA

Table 3 shows the correspondence between the illumination intensity and the LED operating current, using the first luminance information as the illumination intensity. When the first brightness information is brightness, table 3 may also be the corresponding relationship between brightness and LED operating current. It should be noted that, table 3 is only an example and not a limitation, for example, table 3 may also be a correspondence relationship between a range of illumination intensity or brightness and LED operating current, and after the display device 200 obtains the illumination intensity or brightness value from the electrical signal, the corresponding LED operating current is determined according to the illumination intensity or brightness range in which the illumination intensity or brightness value is located.

It should be noted that the above tables 1 to 3 are only examples and not limiting, and any basic modifications of the above tables 1 to 3 should be within the scope of the present application. It should be further understood that the data in tables 1 to 3 are not limited to the protection scope of the present application, and when the ranges are used, the division of the ranges may be uniform or non-uniform, which is within the protection scope of the present application.

Alternatively, after the display device 200 completes the adjustment of the brightness of the virtual image according to the first brightness information sent by the ambient light sensor 310, the display device 200 may further generate an image corresponding to the brightness information of the adjusted brightness of the virtual image, where the image corresponding to the brightness information of the virtual image may be a brightness bar, or a value of the brightness information, or data of the brightness bar and the brightness information. When the display device 200 completes the brightness adjustment of the virtual image, the display device 200 may superimpose and highlight at least one of the brightness bar and the value of the brightness information on the center of the virtual image or the corner position of the virtual image (for example, 3 seconds), so that the user may learn the brightness of the adjusted virtual image according to the brightness bar. It can be appreciated that, in the process of generating the virtual image by the display device 200, there is an energy loss in the reflection process of the image light emitted from the image generating unit 201, so that the luminance of the virtual image generated by the display device 200 is different from the luminance of the image generating unit 201, that is, there is a correspondence relationship between the luminance of the virtual image and the luminance of the image generating unit 201. Accordingly, the display device 200 may display luminance information corresponding to the luminance of the image generating unit 201 after the adjustment of the luminance of the virtual image is completed, or the present application is not limited in consideration of the luminance after the loss.

Based on the above scheme, the brightness of the virtual image displayed by the display system 300 provided by the embodiment of the application can be adjusted along with the change of the ambient light, so that the application scene of the display system 300 provided by the application is enlarged, and the abundant scene experience of users is satisfied. For example, when the display system 300 provided by the present application is installed in a vehicle, such as an automobile, if the automobile enters a tunnel from the ground, the virtual image generated by the display system 300 becomes bright, thereby ensuring the viewing effect of the user in a darker environment.

Fig. 4 is a schematic structural diagram of a display system 400 according to an embodiment of the application. As shown in fig. 4, the display system 400 includes the display device 200 and the temperature sensor 410, and the display system 400 may be applied to the vehicle-mounted display system 100 shown in fig. 1. Wherein the temperature sensor 410 is connected to the display device 200. Specifically, the temperature sensor 410 is configured to acquire temperature information indicating the temperature of the image generation unit 202, and transmit the temperature information to the display device 200. The display device 200 is configured to adjust the brightness of the generated virtual image according to the temperature information.

Alternatively, the temperature light sensor 410 may be electrically connected (e.g., PCB, etc.) or wirelessly connected (e.g., wlan, etc.) to the display device 200.

Alternatively, the temperature sensor 410 is arranged on the image generation unit 202 or around the image generation unit 202.

Specifically, the temperature information acquired by the temperature sensor 410 may be a temperature value or a resistance, or the like.

When the temperature information is represented by a temperature value, the temperature value transmitted from the temperature sensor 410 to the display device 200 may be the actual temperature value, the amount of change in temperature, or the like. For example, if the temperature value transmitted from the temperature sensor 410 to the display device 200 at the previous time is 30 ℃, the temperature value transmitted from the temperature sensor 410 to the display device 200 after the temperature increases is 60 ℃. That is, the temperature sensor 410 indicates the temperature by the magnitude of the temperature value, and the higher the temperature value, the higher the temperature. Or the temperature sensor 410 transmits the amount of change deltac in the temperature value to the display device 200. For example, when Δc is a positive number, it indicates a temperature increase, Δc is an increase amount relative to the threshold temperature, and when Δc is a negative number, it indicates a temperature decrease, Δc is a decrease amount relative to the threshold temperature. The threshold temperature may be preset in the display device 200 and the temperature sensor 410, and may be, for example, a median value of the lowest operating temperature and the highest operating temperature of the image processing unit 201.

Similarly, when the temperature information is represented by a resistance value, the resistance value transmitted from the temperature sensor 410 to the display device 200 may be the actual resistance, the amount of change in resistance, or the like. For example, if the resistance value transmitted from the temperature sensor 410 to the display device 200 at the previous time is 7Ω, the updated resistance value is 20Ω transmitted from the temperature sensor 410 to the display device 200 after the temperature rises. That is, the temperature sensor 410 indicates the temperature by the magnitude of the resistance value, and the higher the resistance value, the higher the temperature. Or the temperature sensor 410 transmits the amount of change ΔΩ in the resistance value to the display device 200. For example, ΔΩ is a positive number, and indicates a temperature increase, ΔΩ is an increase in threshold resistance, and ΔΩ is a negative number, and indicates a temperature decrease, ΔΩ is a decrease in threshold resistance. Wherein the threshold resistance may be preset in the display device 200 and the temperature sensor 410.

Specifically, after the temperature sensor 410 acquires the temperature information, an electrical signal carrying the temperature information is generated, and the electrical signal carrying the temperature information is sent to the display device 200 for preparation, so that the display device 200 controls the brightness of the image light of the image generating unit 201 according to the temperature information, thereby realizing brightness control of the generated virtual image.

In some embodiments, the correspondence between the temperature information and the duty ratio of the PWM as shown in table 4 may be preset in the display device 200, and the duty ratio of the PWM of the image generating unit 201 under the specific temperature information may be determined according to the correspondence, so that the control of the image generating unit 201 is achieved by changing the duty ratio of the PWM of the image signal, and the purpose of adjusting the brightness of the image generating unit 201 is achieved.

TABLE 4 Table 4

Temperature information (taking temperature value as an example)	Duty cycle of PWM
		30℃	99.6
35℃	99.6
		40℃	99.6
45℃	99.6
		50℃	99.6
55℃	99.6
		58℃	85.7
62℃	71.2
		65℃	56.7
68℃	42.2
		70℃	27.7

It is understood that table 4 is a correspondence relationship between the temperature value shown with the temperature information as the temperature value and the duty ratio of PWM. When the temperature information is a resistance value, table 4 may also be a correspondence relationship between the resistance value and the duty ratio of PWM. Table 4 is only an example and not a limitation, and table 4 may be a correspondence relationship between a range of temperature values or a range of resistance values and a duty ratio, for example, and after the display device 200 obtains the temperature values or the resistance values from the electrical signals, the duty ratio of the corresponding PWM may be determined according to the temperature values or the range of resistance values where the temperature values or the resistance values are located.

In other embodiments, the correspondence between the temperature information and the PWM control value shown in table 5 may be preset in the display device 200, and the PWM control value at a specific temperature may be determined according to the correspondence, so that by changing the PWM control value of the image signal, the duty ratio of the PWM of the image signal is changed, so as to control the image generating unit 201, and further achieve the purpose of adjusting the brightness of the image generating unit 201.

TABLE 5

It is understood that table 5 shows the correspondence between the temperature value and the PWM control value, which are shown with the temperature information as the temperature value. When the temperature information is a resistance value, table 5 may also be a correspondence relationship between the resistance value and a control value of PWM. Table 5 is only an example and not a limitation, and table 5 may be a correspondence relationship between a range of temperature values or a range of resistance values and PWM control values, for example, and after the display device 200 obtains the temperature values or the resistance values from the electrical signals, the corresponding PWM control values may be determined according to the temperature values or the range of resistance values where the temperature values or the resistance values are located.

In still other embodiments, when the image generating unit 201 employs an LED light source (for example, the backlight of the LCD display is an LED light source), the correspondence between the temperature information and the operating current as shown in table 6 may be preset in the display device 200, and the operating current of the image generating unit 201 under specific temperature information may be determined according to the correspondence, so that the control of the image generating unit 201 is achieved by changing the operating current of the image signal, and thus the purpose of adjusting the brightness of the image generating unit 201 is achieved.

TABLE 6

Temperature information (taking temperature value as an example)	LED operating current
		30℃	79
58℃	68
		62℃	56
65℃	45
		68℃	33
70℃	22

It is understood that table 6 is a correspondence relationship between the temperature value and the LED operating current, which is shown by using the temperature information as the temperature value. When the temperature information is a resistance value, table 6 may also be a correspondence relationship between the resistance value and the LED operating current. It should be noted that table 6 is only an example and not a limitation, and table 6 may be a correspondence relationship between a range of temperature values or a range of resistance values and LED operating currents, for example, and when the display device 200 obtains a temperature value or a resistance value from an electrical signal, the corresponding LED operating current may be determined according to the temperature value or the range of resistance values in which the temperature value or the resistance value is located.

It should be noted that the above tables 4 to 6 are only examples and not limiting, and any basic modifications of the above tables 4 to 6 should be within the scope of the present application. It should be further understood that the data in tables 4 to 6 are not limited to the protection scope of the present application, and when the ranges are used, the division of the ranges may be uniform or non-uniform, which is within the protection scope of the present application.

Based on the above scheme, the brightness of the virtual image displayed by the display system 400 provided by the embodiment of the application can be adjusted along with the change of the temperature of the image generating unit, so that the application scene of the display system 400 provided by the application is enlarged, and the abundant scene experience of users is satisfied.

Optionally, the display system 400 may further include the ambient light sensor 310 shown in fig. 3, where the display device 200 receives the temperature information from the temperature sensor 410 and the first luminance information of the ambient light sensor 310, and adjusts the luminance of the generated virtual image according to the first luminance information and the temperature information.

It should be noted that, in order to ensure normal operation of the display apparatus 200, the ambient temperature at the time of operation of the display apparatus 200 cannot be excessively high, because the excessively high ambient temperature may cause damage to the image generating unit 201, thereby affecting the generation of the virtual image by the display apparatus 200. Therefore, when the display apparatus 200 adjusts the brightness of the virtual image according to the first brightness information and the temperature information, the display apparatus 200 needs to be adjusted according to the first brightness information within a reasonable temperature range satisfying the operation of the image generating unit. In other words, the adjustment of the brightness of the virtual image by the display device 200 is meaningful only when the image generation unit 201 is guaranteed not to be damaged by high temperatures. For example, when the temperature information is less than or equal to the threshold value of the temperature information, the display device 200 performs virtual image brightness adjustment according to the first brightness information of the above tables 1 to 3; when the temperature information is greater than the threshold value of the temperature information, the highest brightness of the virtual image depends on the brightness corresponding to the temperature information, that is, the temperature information becomes a key factor of the brightness of the virtual image at this time. In other words, in order to ensure the normal operation of the image generating unit, even if the virtual image luminance corresponding to the first luminance information is higher than the virtual image luminance corresponding to the temperature information, at this time, the display device 200 cannot adjust the virtual image luminance to the luminance corresponding to the first luminance information, and the highest luminance can be adjusted only to the virtual image luminance corresponding to the temperature information. In some embodiments, the display device 200 adjusts the brightness down according to only the first brightness information when the temperature information is greater than the threshold temperature information. Alternatively, in other embodiments, the display device 200 adjusts the brightness of the current virtual image to a constant value, for example, the brightness of the virtual image corresponding to the threshold temperature information or the brightness of the virtual image corresponding to the threshold temperature information is lower than the threshold temperature information.

For example, the correspondence between the temperature information and the first luminance information shown in table 7 and the duty ratio of the PWM may be preset in the display device 200, and the specific temperature information and the duty ratio of the PWM of the image generating unit 201 under the first luminance information may be determined according to the correspondence, so as to achieve the purpose of adjusting the luminance of the image generating unit 201.

TABLE 7

It is understood that table 7 shows only the correspondence relationship of the three, taking the temperature value, the illumination intensity, and the duty ratio of PWM as examples. Since the temperature information may also be a resistance value, the first luminance information may also be a luminance, and the display device 200 may also change the PWM control value (as shown in table 2 above) or the backlight current (as shown in table 3 above) of the image generating unit 201 when performing luminance adjustment, there are also various kinds of correspondence between the temperature information and the first luminance information, for example, correspondence between the resistance value, the illumination intensity, and the duty ratio of the PWM, or correspondence between the temperature value, the illumination intensity, and the PWM control value, etc., which are not enumerated here.

It is also understood that table 7 is exemplified by the fact that the virtual image luminance displayed by the display device 200 is a fixed value when the temperature exceeds the threshold temperature (i.e., 66 ℃). Table 7 may also be a correspondence relationship of PWM duty cycle decrease under different first brightness information after the temperature exceeds the threshold temperature, which is within the protection scope of the present application.

Fig. 5 is a schematic structural diagram of a display system 500 according to an embodiment of the application. As shown in fig. 5, the display system 500 includes the display device 200 and the control device 510, and the display system 500 may be applied to the vehicle-mounted display system 100 shown in fig. 1. Specifically, the control device 510 is configured to generate second luminance information indicating the viewing luminance desired by the user, and transmit the second luminance information to the display device 200. The display device 200 is configured to adjust the luminance of the generated virtual image according to the second luminance information. Wherein the control device 510 is electrically or wirelessly connected with the display device 200.

Alternatively, when the control device 510 is electrically connected to the display device 200, the control device 510 may be disposed on a housing of the display device 200, such as the housing disposed below the window unit 203 shown in fig. 5. Or the control device 510 is connected to the display apparatus through an external electric wire.

Alternatively, when the control device 510 is wirelessly connected to the display device 200, the control device 510 may be connected to the display device 200 through a wireless local area network (Wireless Local Area Network, WLAN) or a bluetooth device, and the system is shown in fig. 6.

It should be noted that, in the present embodiment, the desired viewing brightness of the user may be the brightness adjusted by the user, the brightness mode selected by the user, or the data of the brightness adjusted by the user learned by the display system 500 (such as the control device 510) through the brightness adjustment habit of the user. For example, when the viewing brightness desired by the user is the brightness manually adjusted by the user, the second brightness information may be a brightness value generated according to the manual adjustment by the user or a brightness variation amount generated for the manual adjustment by the user. It should be understood that, since there is an energy loss in reflection of the image light emitted from the image generating unit 201 in the process of generating the virtual image by the display device 200, the luminance of the virtual image generated by the display device 200 is different from the luminance of the image generating unit 201. Accordingly, in the present embodiment, the user desired viewing luminance refers to virtual image luminance, and the display device changes the luminance of the image generating unit 201 according to the desired viewing luminance to achieve the user desired viewing luminance. In other words, there is a correspondence between the virtual image luminance and the luminance of the image generation unit 201, so that the display device can adjust the luminance of the image generation unit 201 according to the correspondence.

Specifically, after the control device 510 obtains the second luminance information, generates an electrical signal or a wireless signal carrying the second luminance information, and sends the electrical signal carrying the temperature information to the display device 200 for preparation, so that the display device 200 controls the luminance of the image light of the image generating unit 201 according to the temperature information, thereby realizing the luminance control of the generated virtual image.

In some embodiments, when the user's desired viewing brightness is a brightness that the user adjusts by himself, the user adjusts the desired brightness by controlling the device, for example, by controlling a control button on the device. In one implementation, the control interface of the control device includes two control buttons, i.e., "+" for increasing the brightness and "-" for decreasing the brightness, as shown in (a) of fig. 7. For example, when the user wants to increase the brightness by 5 brightness units, the "+" can be continuously pressed 5 times. The brightness unit corresponds to a brightness variation, for example, a brightness variation using illumination intensity (lx) as a unit, and the precision of the brightness variation can be designed according to different scene requirements and performances of the image generating unit 201, when the display system 500 is applied to a scene with low precision requirements, the brightness unit can be set to be larger, so that each adjustment variation is more obvious. When the display system 500 is used in a scene with high accuracy requirements, the brightness units can be set smaller, so that each adjustment is finer. In another possible manner, the control interface of the control device includes two control buttons, i.e., a "and a" v ", as shown in fig. 7 (b), the" a "is used to increase the luminance, and the" v "is used to decrease the luminance. Likewise, the accuracy of the brightness variation may be designed according to different scene requirements and the performance of the image generating unit 201, which will not be described again.

It will be appreciated that fig. 7 is merely an example, and that the control device may further include a plurality of buttons for adjusting the brightness, or other forms of buttons, and the present application is not limited thereto.

In some embodiments, when the user desired viewing brightness is a user-selected brightness mode, the user selects a different brightness mode, e.g., a night mode, a daytime mode, a dark mode, a light mode, etc., by controlling the device. Wherein, the different modes represent different brightness, and when the display device receives the different brightness modes, the brightness of the image generating unit 201 can be adjusted according to the preset brightness corresponding to the different brightness modes, so that the brightness of the virtual image meets the expected watching brightness of the user.

In still other embodiments, when the user's desired viewing brightness is the data of the user's adjustment brightness learned by the control device 510, the user selects different data through the control device, so that after the display device receives the different data, the brightness of the image generating unit 201 may be adjusted according to the preset brightness corresponding to the different data, so that the brightness of the virtual image satisfies the user's desired viewing brightness. The data of the brightness adjustment of the user learned by the control device 510 may be learned by age, eyesight, eye health condition, individual brightness sensitivity, and the like, which is not limited by the present application.

Based on the above scheme, the brightness of the virtual image displayed by the display system 500 provided by the embodiment of the application can be changed and adjusted by the control of the user, so that the flexibility of brightness adjustment is improved, and the user experience is further improved.

Optionally, the display system 500 may further include the ambient light sensor 310 shown in fig. 3, where the display device 200 receives the second luminance information from the control device 510 and the first luminance information of the ambient light sensor 310, and adjusts the luminance of the generated virtual image according to the first luminance information and the second luminance information.

It is understood that when the display apparatus 200 adjusts the brightness of the virtual image according to the first and second brightness information, the viewing brightness desired by the user may be a main consideration when adjusting the display apparatus 200. In some embodiments, if the user desired viewing luminance is the user's own adjusted luminance or the user adjusted luminance data, the display device 200 adjusts the virtual image luminance to the user desired viewing luminance when the virtual image luminance corresponding to the first luminance information is higher than the user desired viewing luminance. When the brightness of the virtual image corresponding to the first brightness information is lower than the viewing brightness expected by the user, the display device 200 adjusts the brightness of the virtual image to the brightness of the virtual image corresponding to the first brightness information, and then further adjusts the brightness of the virtual image to the expected brightness of the user. In other embodiments, if the viewing brightness desired by the user is the brightness mode selected by the user, the brightness adjustment range of the display device 200 needs to be adjusted in the brightness mode selected by the user, and at this time, the display device 200 adjusts based on the correspondence relationship of the first brightness information located in the brightness range corresponding to the brightness mode. For example, when the user selects the dark color mode in advance and adjusts the light source according to the ambient light, the light source needs to be adjusted according to the dark color mode by using the correspondence between the first luminance information and any one of the control value of the PWM, the duty of the PWM, and the backlight current value.

Optionally, the display system 500 may further include the temperature sensor 410 shown in fig. 4, where the display device 200 receives the second luminance information from the control device 510 and the temperature information of the temperature sensor 410, and adjusts the luminance of the generated virtual image according to the temperature information and the second luminance information.

It is understood that, in order to ensure the normal operation of the display apparatus 200, the process of performing the virtual image brightness adjustment by the display apparatus 200 according to the temperature information and the second brightness information may refer to the process of performing the virtual image brightness adjustment by the display apparatus 200 according to the temperature information and the first brightness information, and pre-store the corresponding relationship as shown in table 7. For example, when the temperature information acquired by the display apparatus 200 is within the threshold temperature information range, the display apparatus 200 may adjust the luminance of the virtual image according to the second luminance information in any one of the manners of tables 1 to 3 described above; when the temperature information acquired by the display device 200 is greater than the threshold temperature information, the display device 200 can only turn down the brightness according to the second brightness information. Or the brightness of the virtual image is adjusted to a constant value. Optionally, the display system 500 may further include the ambient light sensor 310 shown in fig. 3 and the temperature sensor 410 shown in fig. 4, where the display device 200 receives the second luminance information from the control device 510, the first luminance information of the ambient light sensor 310, and the temperature information of the temperature light sensor 410, and adjusts the luminance of the generated virtual image according to the first luminance information, the temperature information, and the second luminance information.

It can be understood that, when the display device 200 performs the adjustment of the brightness of the virtual image according to the temperature information, the first brightness information and the second brightness information, the priority of the information according to which the display device 200 adjusts the brightness of the virtual image is the temperature information, the second brightness information and the first brightness information from high to low, respectively. In other words, the brightness adjusted by the display device 200 needs to be targeted at the desired brightness of the user under the condition that the temperature information is satisfied. In some embodiments, when the temperature information acquired by the display apparatus 200 is within the threshold temperature information range, the display apparatus 200 adjusts the brightness of the virtual image according to the first brightness information and the second brightness information. At this time, the process of adjusting the brightness of the virtual image according to the first brightness information and the second brightness information may be referred to the above-described display device 200. That is, if the user desired viewing brightness is the brightness adjusted by the user or the data of the user adjusted brightness, and the virtual image brightness corresponding to the first brightness information is higher than the user desired viewing brightness, the display device 200 adjusts the virtual image brightness to the user desired viewing brightness. Or the brightness of the virtual image is adjusted to be lower corresponding to the first brightness information, and then the brightness of the virtual image is further adjusted to be the expected brightness of the user. If the viewing brightness desired by the user is the brightness mode selected by the user, the brightness adjustment range of the display device 200 needs to be adjusted in the brightness mode selected by the user. In other embodiments, the display device 200 can only turn down the brightness according to the second brightness information when the temperature information acquired by the display device 200 is greater than the threshold temperature information range. Or the brightness of the virtual image is adjusted to a constant value.

Fig. 8 is a schematic circuit diagram of a display device according to an embodiment of the application. As shown in fig. 8, the circuits in the display device mainly include a main processor (host CPU) 1201, an external memory interface 1202, an internal memory 1203, an audio module 1204, a video module 1205, a power supply module 1206, a wireless communication module 1207, an i/O interface 1208, a video interface 1209, a display circuit 1210, a modulator 1212, and the like. The main processor 1201 and its peripheral components, such as an external memory interface 1202, an internal memory 1203, an audio module 1204, a video module 1205, a power module 1206, a wireless communication module 1207, an i/O interface 1208, a video interface 1209, and a display circuit 1210, may be connected via a bus. The main processor 1201 may be referred to as a front-end processor.

In addition, the circuit diagram illustrated in the embodiment of the present application does not constitute a specific limitation of the display device. In other embodiments of the application, the display device may include more or less components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The main processor 1201 includes one or more processing units, for example: the host Processor 1201 may include an application Processor (Application Processor, AP), a modem Processor, a graphics Processor (Graphics Processing Unit, GPU), an image signal Processor (IMAGE SIGNAL Processor, ISP), a controller, a video codec, a digital signal Processor (DIGITAL SIGNAL Processor, DSP), a baseband Processor, and/or a neural network Processor (Neural-Network Processing Unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors.

A memory may also be provided in the main processor 1201 for storing instructions and data. In some embodiments, the memory in the main processor 1201 is a cache memory. The memory may hold instructions or data that is just used or recycled by the main processor 1201. If the main processor 1201 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided, reducing the latency of the main processor 1201, and thus improving the efficiency of the system.

In some embodiments, the display device may also include a plurality of Input/Output (I/O) interfaces 1208 connected to the main processor 1201. Interface 1208 can include an integrated circuit (Inter-INTEGRATED CIRCUIT, I2C) interface, an integrated circuit built-in audio (Inter-INTEGRATED CIRCUIT SOUND, I2S) interface, a pulse code modulation (Pulse Code Modulation, PCM) interface, a universal asynchronous receiver Transmitter (Universal Asynchronous Receiver/Transmitter, UART) interface, a mobile industry processor interface (Mobile Industry Processor Interface, MIPI), a General-Purpose Input/Output (GPIO) interface, a subscriber identity module (Subscriber Identity Module, SIM) interface, and/or a universal serial bus (Universal Serial Bus, USB) interface, among others. The I/O interface 1208 may be connected to a mouse, a touch pad, a keyboard, a camera, a speaker/horn, a microphone, or a physical key (e.g., a volume key, a brightness adjustment key, an on/off key, etc.) on the display device.

The external memory interface 1202 may be used to connect an external memory card, such as a Micro SD card, to enable expansion of the memory capabilities of the display device. The external memory card communicates with the main processor 1201 through the external memory interface 1202 to realize a data storage function.

The internal memory 1203 may be used to store computer executable program code that includes instructions. The internal memory 1203 may include a stored program area and a stored data area. The storage program area may store an operating system, an application program (such as a call function, a time setting function, etc.) required for at least one function, and the like. The storage data area may store data created during use of the display device (e.g., phone book, universal time, etc.), etc. In addition, the internal memory 1203 may include a high speed random access memory, and may also include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (Universal Flash Storage, UFS), and the like. The main processor 1201 performs various functional applications of the display apparatus and data processing by executing instructions stored in the internal memory 1203 and/or instructions stored in a memory provided in the main processor 1201.

The display device may implement audio functions through the audio module 1204, an application processor, and the like. Such as music playing, talking, etc.

The audio module 1204 is used to convert digital audio information into an analog audio signal output, and also to convert an analog audio input into a digital audio signal. The audio module 1204 may also be used to encode and decode audio signals, such as for playback or recording. In some embodiments, the audio module 1204 may be provided in the main processor 1201, or some of the functional modules of the audio module 1204 may be provided in the main processor 1201.

The Video interface 1209 may receive an externally input audio/Video signal, which may specifically be a high-definition multimedia interface (High Definition Multimedia Interface, HDMI), a digital Video interface (Digital Visual Interface, DVI), a Video graphics array (Video GRAPHICS ARRAY, VGA), a Display Port (DP), etc., and the Video interface 1209 may also output Video. When the display device is used as an in-vehicle display, the video interface 1209 may receive a speed signal and an electric quantity signal input by a peripheral device, and may also receive a VR video signal input from the outside. When the display device is used, the video interface 1209 may receive a video signal input from an external computer or a terminal device.

The video module 1205 may decode video input by the video interface 1209, for example, h.264 decoding. The video module can also encode the video collected by the display device, for example, H.264 encoding is carried out on the video collected by the external camera. In addition, the main processor 1201 may decode the video input from the video interface 1209 and output the decoded image signal to the display circuit 1210.

The display circuit 1210 and modulator 1212 are used to display a corresponding image. In this embodiment, the video interface 1209 receives an externally input video source signal, and the video module 1205 decodes and/or digitizes the video source signal to output one or more image signals to the display circuit 1210, and the display circuit 1210 drives the modulator 1212 to image the incident polarized light according to the input image signal, so as to output image light. In addition, the main processor 1201 may output one or more image signals to the display circuit 1210.

In this embodiment, the display circuit 1210 and the modulator 1212 belong to the electronic element in the image generation unit described above, and the display circuit 1210 may be referred to as a driving circuit.

The power module 1206 is configured to provide power to the main processor 1201 and the light source 1200 based on input power (e.g., direct current), and the power module 1206 may include a rechargeable battery therein, which may provide power to the main processor 1201 and the light source 1200. Light from light source 1200 may be transmitted to modulator 1212 for imaging to form an image light signal.

The wireless Communication module 1207 may enable the display device to wirelessly communicate with the outside world, which may provide solutions for wireless Communication such as wireless local area network (Wireless Local Area Networks, WLAN) (e.g., wireless fidelity (WIRELESS FIDELITY, wi-Fi) network), bluetooth (BT), global navigation satellite system (Global Navigation SATELLITE SYSTEM, GNSS), frequency modulation (Frequency Modulation, FM), near field Communication (NEAR FIELD Communication, NFC), infrared (IR), etc. The wireless communication module 1207 may be one or more devices that integrate at least one communication processing module. The wireless communication module 1207 receives electromagnetic waves via an antenna, modulates the electromagnetic wave signals, performs filtering processing, and transmits the processed signals to the main processor 1201. The wireless communication module 1207 may also receive a signal to be transmitted from the main processor 1201, frequency modulate the signal, amplify the signal, and convert the signal into electromagnetic waves to radiate the electromagnetic waves through an antenna.

In addition, the video data decoded by the video module 1205 may be received wirelessly by the wireless communication module 1207 or read from an external memory, for example, the display device may receive video data from a terminal device or an in-vehicle entertainment system through a wireless lan in the vehicle, and the display device may read audio/video data stored in the external memory, in addition to the video data input through the video interface 1209.

The display device may be mounted on a vehicle, please refer to fig. 9, fig. 9 is a schematic diagram of a possible functional frame of a vehicle according to an embodiment of the present application.

As shown in FIG. 9, various subsystems may be included in the functional framework of the vehicle, such as a sensor system 12, a control system 14, one or more peripheral devices 16 (one shown in the illustration), a power supply 18, a computer system 20, and an on-board display system 22 in the illustration. Alternatively, the vehicle may include other functional systems, such as an engine system to power the vehicle, etc., as the application is not limited herein.

The sensor system 12 may include a plurality of sensing devices that sense the measured information and convert the sensed information to an electrical signal or other desired form of information output according to a certain rule. As shown, these detection devices may include, but are not limited to, a global positioning system (global positioning system, GPS), a vehicle speed sensor, an inertial measurement unit (inertial measurement unit, IMU), a radar unit, a laser rangefinder, an imaging device, a wheel speed sensor, a steering sensor, a gear sensor, or other elements for automatic detection, and so forth.

The control system 14 may include several elements such as a steering unit, a braking unit, a lighting system, an autopilot system, a map navigation system, a network timing system, and an obstacle avoidance system as shown. Optionally, control system 14 may also include elements such as throttle controls and engine controls for controlling the speed of travel of the vehicle, as the application is not limited.

Peripheral device 16 may include several elements such as the communication system in the illustration, a touch screen, a user interface, a microphone, and a speaker, among others. Wherein the communication system is used for realizing network communication between the vehicle and other devices except the vehicle. In practical applications, the communication system may employ wireless communication technology or wired communication technology to enable network communication between the vehicle and other devices. The wired communication technology may refer to communication between the vehicle and other devices through a network cable or an optical fiber, etc.

The power source 18 represents a system that provides power or energy to the vehicle, which may include, but is not limited to, a rechargeable lithium battery or lead acid battery, or the like. In practical applications, one or more battery packs in the power supply are used to provide electrical energy or power for vehicle start-up, the type and materials of the power supply are not limiting of the application.

Several functions of the vehicle are performed by the control of the computer system 20. The computer system 20 may include one or more processors 2001 (shown as one processor) and memory 2002 (which may also be referred to as storage devices). In practical applications, the memory 2002 is also internal to the computer system 20, or external to the computer system 20, for example, as a cache in a vehicle, and the application is not limited thereto. Wherein,

Processor 2001 may include one or more general-purpose processors, such as a graphics processor (graphic processing unit, GPU). The processor 2001 may be used to execute related programs or instructions corresponding to the programs stored in the memory 2002 to implement the corresponding functions of the vehicle.

Memory 2002 may include volatile memory (RAM), such as RAM; the memory may also include non-volatile memory (non-vlatile memory), such as ROM, flash memory (flash memory), HDD, or solid state disk SSD; memory 2002 may also include combinations of the above types of memory. Memory 2002 may be used to store a set of program codes or instructions corresponding to the program codes so that processor 2001 invokes the program codes or instructions stored in memory 2002 to implement the corresponding functions of the vehicle. In the present application, the memory 2002 may store a set of program codes for vehicle control, and the processor 2001 may call the program codes to control the safe running of the vehicle, and how the safe running of the vehicle is achieved will be described in detail below.

Alternatively, the memory 2002 may store information such as road maps, driving routes, sensor data, and the like, in addition to program codes or instructions. The computer system 20 may implement the relevant functions of the vehicle in combination with other elements in the functional framework schematic of the vehicle, such as sensors in the sensor system, GPS, etc. For example, the computer system 20 may control the direction of travel or speed of travel of the vehicle, etc., based on data input from the sensor system 12, and the application is not limited.

In-vehicle display system 22 may include several elements, such as a controller and an in-vehicle display. The controller 222 is configured to generate an image (e.g., an image of VR content) according to a user instruction, and send the image to the in-vehicle display for display; the in-vehicle display may include an image generating unit, a window unit through which a passenger can view a target image presented by the in-vehicle display, and an image enlarging unit. The functions of some elements in the vehicle display system may also be implemented by other subsystems of the vehicle, for example, the controller may also be an element in the control system.

Wherein FIG. 9 illustrates the present application as including four subsystems, sensor system 12, control system 14, computer system 20, and in-vehicle display system 22, by way of example only, and not by way of limitation. In practical applications, the vehicle may combine several elements in the vehicle according to different functions, thereby obtaining subsystems with corresponding different functions. In practice, the vehicle may include more or fewer systems or elements, and the application is not limited.

The vehicle may be a car, truck, bus, ship, airplane, helicopter, recreational vehicle, train, etc., and the embodiment of the application is not particularly limited.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs.

The above embodiments are only examples of the present application, and are not intended to limit the present application, and any modifications, equivalent substitutions, improvements, etc. made on the basis of the present application should be included in the scope of the present application.

Claims

1. A display system for in-vehicle display, comprising an ambient light sensor and a display device, the ambient light sensor being connected to the display device, wherein,

The ambient light sensor is used for acquiring first brightness information and sending the first brightness information to the display device, wherein the first brightness information is used for indicating the brightness of ambient light where the display device is located;

The display device is used for adjusting the brightness of the generated virtual image according to the first brightness information, wherein the display device comprises an image generation unit, a window unit and an image amplifying unit, the image generation unit is used for emitting image light to the window unit, the window unit is used for reflecting the image light from the image generation unit to the image amplifying unit and transmitting the image light from the image amplifying unit, the window unit is also used for viewing the virtual image formed by the image light through the window unit by human eyes, and the image amplifying unit is used for reflecting the image light from the window unit to the window unit.

2. The display system of claim 1, wherein the ambient light sensor is disposed on a housing of the display device.

3. The display system of claim 1, wherein the display system further comprises: a temperature sensor, the display device is connected with the temperature sensor,

The temperature sensor is used for acquiring temperature information and sending the temperature information to the display device, and the temperature information is used for indicating the temperature of the image generation unit;

The display device is specifically configured to: and adjusting the brightness of the generated virtual image according to the first brightness information and the temperature information.

4. A display system according to claim 3, wherein the temperature sensor is arranged on the image generation unit.

5. The display system of claim 3, wherein the display system further comprises: the control device is used for controlling the control device,

The control device is used for generating second brightness information and sending the second brightness information to the display device, wherein the second brightness information is used for indicating the watching brightness expected by a user;

the display device is specifically configured to: and adjusting the brightness of the generated virtual image according to the first brightness information, the temperature information and the second brightness information.

6. The display system of claim 5, wherein the control device is electrically connected to the display device, and wherein the second luminance information is carried in an electrical signal.

7. The display system of claim 6, wherein the control device is disposed on a housing of the display device.

8. The display system of claim 5, wherein the control device is wirelessly coupled to the display device, and wherein the second brightness information is carried in a wireless signal.

9. A vehicle comprising a display system as claimed in claim 1.

10. The vehicle of claim 9, wherein the display system is disposed at least one of a headrest of a seat of the vehicle, a back of a seat of the vehicle, and a co-console of the vehicle.

11. A cabin system comprising a display device and a display system as claimed in claim 1.