Display system, vehicle and cabin system

Abstract

A display system (300), which comprises an ambient light sensor (310) and a display apparatus (200) connected to the ambient light sensor, wherein the ambient light sensor is used for acquiring first luminance information, and sending the first luminance information to the display apparatus, which first luminance information is used for indicating the luminance of ambient light of the environment where the display apparatus is located, and the display apparatus is used for adjusting the brightness of a generated virtual image on the basis of the first luminance information. The display system can adjust the brightness of a virtual image displayed by means of the display apparatus on the basis of the ambient light, thereby improving the user experience and ensuring the performance of the display apparatus.

Description

Display system, vehicle and cockpit system

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on September 27, 2023, application number 202322650154.2, and application name “A display system, vehicle and cabin system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the fields of display technology and intelligent automobile driving technology, and more specifically, to a display system, a vehicle, and a cockpit system. Background Art

[0003] Cars have become an indispensable means of transportation in our daily lives. With the advancement of intelligent vehicles, people's demands for cars have evolved from simple transportation to living spaces that provide access to information and entertainment. In-car display technology has become a hot research area. By installing in-car displays, passengers can access information or engage in entertainment activities, thereby creating intelligent application scenarios for the cabin space.

[0004] How to adjust the brightness of the virtual image displayed by the display device to ensure the performance of the display device while improving the user experience is a problem that needs to be solved.

[0005] Utility Model Content

[0006] The present application provides a display system, a vehicle, and a cockpit system. The display system provided in the present application can provide viewers with display effects of different brightness based on the ambient light, temperature, and user operation of the display device, thereby improving the user experience.

[0007] In a first aspect, an embodiment of the present application provides a display system. The system can be used for an in-vehicle display, and the display system includes an ambient light sensor and a display device, wherein the ambient light sensor is connected to the display device. The ambient light sensor is used to obtain first brightness information and send the first brightness information to the display device, wherein the first brightness information is used to indicate the brightness of the ambient light in which the display device is located; the display device is used to adjust the brightness of the generated virtual image according to the first brightness information, wherein the display device includes an image generation unit, a window unit, and an image magnification unit, wherein the image generation unit is used to emit image light to the window unit, the window unit is used to reflect the image light from the image generation unit to the image magnification unit, and transmit the image light from the image magnification unit, and the window unit is also used for the human eye to view the virtual image formed by the image light through the window unit, and the image magnification unit is used to reflect the image light from the window unit to the window unit.

[0008] Based on the above solution, the display system provided in this application can automatically adjust the brightness of the virtual image according to different ambient light brightness, providing users with a smarter experience.

[0009] In combination with the first aspect, in some implementations of the first aspect, the ambient light sensor is arranged on a housing of the display device.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the display system further includes: a temperature sensor, the display device is connected to the temperature sensor, the temperature sensor is used to obtain temperature information and send the temperature information to the display device, the temperature information is used to indicate the temperature of the image generating unit; the display device is specifically used to: adjust the brightness of the generated virtual image according to the first brightness information and the temperature information.

[0011] Based on the above scheme, the display system provided by the present application can automatically adjust the brightness of the virtual image according to different ambient light brightness and the temperature of the image generation unit while ensuring that the image generation unit operates at a reasonable temperature, thereby ensuring the stability of the system performance.

[0012] In combination with the first aspect, in some implementations of the first aspect, the temperature sensor is arranged on the image generating unit.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the display system further includes: a control device, which is used to generate second brightness information and send the second brightness information to the display device, wherein the second brightness information is used to indicate the user's desired viewing brightness; the display device is specifically used to: adjust the brightness of the generated virtual image according to the first brightness information, the temperature information and the second brightness information.

[0014] Based on the above solution, the display system provided by the present application can also take into account the differences in brightness among users, thereby ensuring the rationality of virtual image brightness adjustment and improving user experience.

[0015] In combination with the first aspect, in certain implementations 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.

[0016] In combination with the first aspect, in some implementations of the first aspect, the control device is arranged on a housing of the display device.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the control device is connected to the display device wirelessly, and the second brightness information is carried in a wireless signal.

[0018] In a second aspect, an embodiment of the present application provides a vehicle, which includes a display system as described in the first aspect and various implementations thereof.

[0019] In combination with the second aspect, in certain implementations of the second aspect, the display system is arranged at at least one of a headrest of a seat of the vehicle, a backrest of a seat of the vehicle, and a co-pilot console of the vehicle.

[0020] In a third aspect, an embodiment of the present application provides a cockpit system, which includes the display system as described in the first aspect and various implementations thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of an application scenario of a smart cockpit display system 100 applicable to an embodiment of the present application.

[0022] FIG2 is a schematic structural diagram of a display device 200 applicable to an embodiment of the present application.

[0023] FIG3 is a schematic structural diagram of a first display system 300 provided in an embodiment of the present application.

[0024] FIG4 is a schematic structural diagram of a second display system 400 provided in an embodiment of the present application.

[0025] FIG5 is a schematic structural diagram of a third display system 500 provided in an embodiment of the present application.

[0026] FIG6 is a schematic structural diagram of a fourth display system 500 provided in an embodiment of the present application.

[0027] FIG7 is a schematic structural diagram of two control devices provided in an embodiment of the present application.

[0028] FIG8 is a circuit diagram of a display device provided in an embodiment of the present application.

[0029] FIG9 is a schematic diagram of a possible functional framework of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0031] In order to facilitate understanding of the embodiments of the present application, the following explanations are provided.

[0032] First, the terms "first," "second," and various numbers in the text descriptions or drawings of the embodiments of the present application shown below are merely for convenience of description and are not necessarily used to describe a specific order or sequence, and are not intended to limit the scope of the embodiments of the present application. For example, they may be used to distinguish between different brightness levels of virtual images.

[0033] Second, the terms "including" and "having" and any variations thereof in the embodiments of the present application shown below are intended to cover non-exclusive inclusions. For example, a system, product or device that includes a series of units is not necessarily limited to those units explicitly listed, but may include other units that are not explicitly listed or are inherent to these products or devices.

[0034] Third, in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. An embodiment or design described as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. The use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0035] Fourth, in the embodiment of the present application, image light refers to light carrying an image (or image information) and is used to generate an image.

[0036] Fifth, in the drawings of this application, the thickness, size, and shape of each optical element have been slightly exaggerated for ease of illustration. Specifically, the shapes of the optical elements shown in the drawings are by way of example, and the drawings are for illustrative purposes only and are not drawn strictly to scale.

[0037] Sixth, unless otherwise defined, all terms (including technical and scientific terms) used in this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0038] Seventh, it should be noted that, unless otherwise specified as a horizontal field of view angle or a vertical field of view angle, in the description of this application, the field of view angle of the display device refers to the angle corresponding to the diagonal length of the displayed image.

[0039] With the rapid development of smart cars, cars are playing an increasingly important role in people's lives, and the demand for in-car displays is gradually increasing. For example, they can provide entertainment services such as games and movies for passengers who spend long hours in the car, or provide office workers with a private office display environment.

[0040] To provide in-vehicle display functions, directly installing a display screen is a common solution. For example, a liquid crystal display (LCD) can be hung on the roof or placed on the back of a seat for use by passengers in the vehicle. However, the brightness of such LCDs is usually fixed and cannot be adjusted.

[0041] In view of this, the present application provides a display system that can adapt to different ambient temperatures, ambient brightness and meet different individual needs, thereby improving user experience.

[0042] FIG1 is a schematic diagram of an application scenario of an intelligent cockpit display system 100 applicable to an embodiment of the present application. As shown in FIG1 , the intelligent cockpit display system 100 includes at least one display device 101 provided on the backrest of a seat 102 and at least one seat 102. FIG1 takes a display device and a seat as an example. Among them, the display device 101 can generate a long-distance magnified virtual image through the input of an external video signal (also referred to as a signal source), providing the viewer with a large-format, long-distance visual experience, and meeting the needs of various application scenarios such as passenger leisure and entertainment, business office, etc. Among them, the display device 101 can be installed on the backrest of the seat 102 before leaving the factory, or installed on the backrest of the seat 102 by modifying the seat 102 after leaving the factory.

[0043] It is understood that the intelligent cockpit display system 100 can be applied to vehicles including, but not limited to, cars, trucks, buses, ships, airplanes, helicopters, recreational vehicles, and trains. The display device 101 can also be installed on a seat headrest or in the passenger console before shipment, or it can be installed on a seat headrest or in the passenger console after shipment by modifying the seat.

[0044] It should be noted that the display system provided in this application can be applied to the smart cockpit display system 100 shown in Figure 1, but the embodiments of this application are not limited thereto and can also be other similar systems that include the smart cockpit display system 100 shown in Figure 1. The display system provided in this application is described in detail below.

[0045] FIG2 is a schematic diagram of the structure of a display device 200 applicable to an embodiment of the present application. Display device 200 can be used in the cockpit virtual image display system shown in FIG1 . As shown in FIG2 , display device 200 is sequentially arranged along the transmission direction of image light into an image generation unit 201, a window unit 202, and an image magnification unit 203. The image generation unit 201 is configured to emit image light toward the window unit. The window unit 202 is configured to reflect image light from the image generation unit 201 to the image magnification unit 203 and transmit image light from the image magnification unit 203. The window unit 202 is also configured to allow the human eye to view the virtual image formed by the image light through the window unit 202. The image magnification unit 203 is configured to reflect image light from the window unit 1002 to the window unit 202.

[0046] Optionally, the image generation unit 201 can adopt a liquid crystal display (LCD) display, a liquid crystal on silicon (LCOS) display, an organic light-emitting diode (OLED) display, a micro light-emitting diode (Micro-LED) display, a display using miniLED display technology, a digital light processing (DLP) display or a micro-electromechanical system (MEMS) display, etc., which is not limited in this application.

[0047] Optionally, the image magnifying unit 203 is a free-form surface mirror.

[0048] Specifically, when a user uses the display device 200 to watch a video image, the image generation unit 201 emits image light toward the window unit 202. The image light is reflected by the window unit 202 and then incident on the image magnification unit 203. It is reflected again by the image magnification unit 203 and then incident on the window unit 202, passing through the window unit 202. At this time, the user can see a large-format image located far away through the window unit 202.

[0049] FIG3 is a schematic diagram of the structure of a display system 300 provided in an embodiment of the present application. As shown in FIG3 , the display system 300 includes a display device 200 and an ambient light sensor 310. The display system 300 can be applied to the in-vehicle display system 100 shown in FIG1 . The ambient light sensor 310 is connected to the display device 200. Specifically, the ambient light sensor 310 is configured to obtain first brightness information and transmit the first brightness information to the display device 200. The first brightness information is configured to indicate the brightness of the ambient light in which the display device 200 is located. The display device 200 is configured to adjust the brightness of the generated virtual image based on the first brightness information.

[0050] Optionally, the ambient light sensor 310 is electrically connected to the display device 200, for example, via a printed circuit board (PCB) or a cable. Alternatively, the ambient light sensor 310 is wirelessly connected to the display device 200, for example, via a wireless local area network (WLAN) or a Bluetooth device.

[0051] Optionally, the ambient light sensor 310 is disposed on the housing of the display device 200. For example, in FIG3 , the ambient light sensor 310 is mounted on the bottom of the housing below the window unit 202. Alternatively, the ambient light sensor 310 is disposed 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 can also be disposed on the back of the seat near the display device 200, or on a headrest near the display device 200. When the ambient light sensor 310 is not mounted on the housing of the display device 200, the ambient light sensor 310 can be a sensor within the cabin used to obtain cabin ambient light, or a sensor specifically configured for the display device 200, which is not limited in this application.

[0052] Specifically, the first brightness information acquired by the ambient light sensor 310 may be expressed in terms of illumination intensity (Illuminance) or brightness (Brightness).

[0053] When the first brightness information is represented by light intensity, the ambient light intensity sent by the ambient light sensor 310 to the display device 200 can be the actual light intensity or the change in light intensity. For example, if the ambient light intensity sent by the ambient light sensor 310 to the display device 200 was 5 lx at a previous moment, and the ambient light brightness increases, the ambient light sensor 310 sends the updated light intensity of 8 lx to the display device 200. In other words, the ambient light sensor 310 uses the light intensity to represent the brightness of the light intensity, with higher light intensity indicating brighter ambient light. Alternatively, the ambient light sensor 310 sends the change in light intensity ΔI to the display device 200. For example, a positive ΔI indicates a brighter ambient light, representing an increase relative to a threshold light intensity. A negative ΔI indicates a darker ambient light, representing a decrease relative to the threshold light intensity. The threshold light intensity may be preset in the display device 200 and the ambient light sensor 310.

[0054] Similarly, when the first brightness information is expressed in terms of brightness, the brightness of the ambient light sent by the ambient light sensor 310 to the display device 200 may be the actual brightness, or a change in brightness, 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 moment is 6 cd / m 2 When the ambient light brightness becomes stronger, the ambient light sensor 310 sends the updated brightness of 10 cd / m to the display device 200. 2 That is, the ambient light sensor 310 indicates brightness by the magnitude of the light intensity. The greater the light intensity, the brighter the ambient light. Alternatively, the ambient light sensor 310 sends the brightness change ΔB to the display device 200. For example, when ΔB is a positive number, it indicates that the ambient light has become brighter, and ΔB is the increase relative to the threshold brightness. When ΔB is a negative number, it indicates that the ambient light has become darker, and ΔB is the decrease relative to the threshold light intensity. The threshold brightness can be preset in the display device 200 and the ambient light sensor 310.

[0055] Specifically, after the ambient light sensor 310 obtains the first brightness information, it generates an electrical signal or a wireless signal carrying the first brightness information, and sends the electrical signal or the wireless signal carrying the first brightness information to the display device 200, so that the display device 200 controls the brightness of the image light of the image generation unit 201 according to the first brightness information, thereby realizing brightness control of the virtual image generated by the display device 200.

[0056] In some embodiments, the display device 200 may pre-set a correspondence between the first brightness information and the PWM duty cycle as shown in Table 1, and determine the PWM duty cycle of the image generation unit 201 under specific first brightness information based on the correspondence. Thus, by changing the PWM duty cycle of the image signal, the image generation unit 201 is controlled to achieve the purpose of adjusting the brightness of the image generation unit 201. The PWM duty cycle of the image generation unit 201 can be understood as the pulse width of the image signal, or as the ratio of the high-level time of the image signal to the total time of one cycle.

[0057] Table 1

[0058] It is understood that Table 1 shows the correspondence between illumination intensity and PWM duty cycle, using the first brightness information as illumination intensity. When the first brightness information is brightness, Table 1 may also show the correspondence between brightness and PWM duty cycle. It should be noted that Table 1 is merely an example and not a limitation. For example, Table 1 may also show the correspondence between illumination intensity or brightness range and duty cycle. After the display device 200 obtains the illumination intensity or brightness value from the electrical signal, it determines the corresponding PWM duty cycle based on the illumination intensity or brightness range in which the illumination intensity or brightness value falls.

[0059] In other embodiments, the display device 200 can pre-set the correspondence between the first brightness information and the PWM control value as shown in Table 2, and determine the PWM control value of the image generation unit 201 under the specific first brightness information based on the correspondence, so as to change the PWM control value of the image signal to change the duty cycle of the PWM of the image signal, thereby achieving control of the image generation unit 201 and further achieving the purpose of adjusting the brightness of the image generation unit 201.

[0060] Table 2

[0061] Table 2 shows the correspondence between illumination intensity and PWM control values, using the first brightness information as illumination intensity. When the first brightness information is brightness, Table 2 can also show the correspondence between brightness and PWM control values. It should be noted that Table 2 is merely illustrative and not limiting. For example, Table 2 can also show the correspondence between illumination intensity or brightness range and duty cycle. After the display device 200 obtains the illumination intensity or brightness value from the electrical signal, it determines the corresponding PWM control value based on the illumination intensity or brightness range within which the illumination intensity or brightness value falls.

[0062] In some other embodiments, when the image generating unit 201 uses an LED light source (for example, the backlight of an LCD display is an LED light source), the display device 200 can pre-set the correspondence between the first brightness information and the operating current as shown in Table 3, and determine the operating current of the image generating unit 201 under the specific first brightness information based on the correspondence, so as to achieve control of the image generating unit 201 by changing the operating current of the image signal, thereby achieving the purpose of adjusting the brightness of the image generating unit 201.

[0063] Table 3

[0064] Table 3 shows the correspondence between light intensity and LED operating current, using the first brightness information as the light intensity. When the first brightness information is brightness, Table 3 can also show the correspondence between brightness and LED operating current. It should be noted that Table 3 is merely illustrative and not limiting. For example, Table 3 can also show the correspondence between light intensity or brightness range and LED operating current. After the display device 200 obtains the light intensity or brightness value from the electrical signal, it determines the corresponding LED operating current based on the light intensity or brightness range within which the light intensity or brightness value falls.

[0065] It should be noted that Tables 1 to 3 above are merely illustrative and non-limiting. Any basic variations of Tables 1 to 3 should be within the scope of protection of this application. It should also be understood that the data in Tables 1 to 3 above do not limit the scope of protection of this application. When expressed as a range, the range can be divided evenly or unevenly and still fall within the scope of protection of this application.

[0066] Optionally, after the display device 200 completes the brightness adjustment of the virtual image according to the first brightness information sent by the ambient light sensor 310, the display device 200 may also generate an image corresponding to the brightness information of the adjusted virtual image brightness. The image corresponding to the brightness information of the virtual image brightness may be a brightness bar, or a value of the brightness information, or data of a brightness bar and brightness information. After the display device 200 completes the virtual image brightness adjustment, the display device 200 may superimpose and highlight at least one of the brightness bar and the value of the brightness information for a short period of time (e.g., 3 seconds) in the center of the virtual image or at a corner of the virtual image, so that the user can know the brightness of the adjusted virtual image based on the brightness bar. It is understandable that, since the image light emitted from the image generation unit 201 loses energy during the reflection process during the process of generating the virtual image by the display device 200, the brightness of the virtual image generated by the display device 200 is different from the brightness of the image generation unit 201, that is, there is a corresponding relationship between the brightness of the virtual image and the brightness of the image generation unit 201. Therefore, after the display device 200 completes the virtual image brightness adjustment, the displayed brightness information may be the brightness of the corresponding image generation unit 201, or the brightness after taking into account the loss, which is not limited in this application.

[0067] Based on the above solution, the brightness of the virtual image displayed by the display system 300 provided in the embodiment of the present application can be adjusted according to changes in ambient light, expanding the application scenarios of the display system 300 provided in the present application and satisfying the user's rich scene experience. For example, when the display system 300 provided in the present application is installed in a vehicle, such as a car, if the car enters a tunnel from the ground, the virtual image generated by the display system 300 will become brighter, thereby ensuring the user's viewing effect in a dark environment.

[0068] FIG4 is a schematic diagram of the structure of a display system 400 provided in an embodiment of the present application. As shown in FIG4 , display system 400 includes a display device 200 and a temperature sensor 410. Display system 400 can be applied to the in-vehicle display system 100 shown in FIG1 . Temperature sensor 410 is connected to display device 200. Specifically, temperature sensor 410 is used to obtain temperature information and transmit the temperature information to display device 200. This temperature information is used to indicate the temperature of image generation unit 202. Display device 200 is used to adjust the brightness of the generated virtual image based on the temperature information.

[0069] Optionally, the temperature optical sensor 410 and the display device 200 are electrically connected (eg, PCB, etc.) or wirelessly connected (eg, WLAN, etc.).

[0070] Optionally, the temperature sensor 410 is arranged on the image generating unit 202 , or arranged around the image generating unit 202 .

[0071] Specifically, the temperature information acquired by the temperature sensor 410 may be a temperature value or resistance, etc.

[0072] When the temperature information is represented by a temperature value, the temperature value sent by the temperature sensor 410 to the display device 200 can be the actual temperature value, or the temperature change. For example, if the temperature value sent by the temperature sensor 410 to the display device 200 at a previous moment was 30°C, after the temperature increases, the temperature sensor 410 sends the updated temperature value of 60°C to the display device 200. In other words, the temperature sensor 410 indicates the temperature level by the temperature value, with a higher temperature value indicating a higher temperature. Alternatively, the temperature sensor 410 sends the temperature change ΔC to the display device 200. For example, a positive ΔC indicates an increase in temperature, representing the increase relative to a threshold temperature. A negative ΔC indicates a decrease in temperature, representing the decrease relative to the threshold temperature. The threshold temperature can be preset in the display device 200 and the temperature sensor 410, for example, the median between the minimum and maximum operating temperatures of the image processing unit 201.

[0073] Similarly, when the temperature information is represented by a resistance value, the resistance value sent by the temperature sensor 410 to the display device 200 may be the actual resistance value, or the amount of resistance change, etc. For example, if the resistance value sent by the temperature sensor 410 to the display device 200 at the previous moment is 7Ω, when the temperature rises, the temperature sensor 410 sends the updated resistance value of 20Ω to the display device 200. That is, the temperature sensor 410 indicates the temperature by the size of the resistance value. The higher the resistance value, the higher the temperature. Alternatively, the temperature sensor 410 sends the amount of resistance change ΔΩ to the display device 200. For example, when ΔΩ is a positive number, it indicates that the temperature has risen, and ΔΩ is the increase relative to the threshold resistance. When ΔΩ is a negative number, it indicates that the temperature has fallen, and ΔΩ is the decrease relative to the threshold resistance. The threshold resistance may be preset in the display device 200 and the temperature sensor 410.

[0074] Specifically, after the temperature sensor 410 obtains the temperature information, it generates an electrical signal carrying the temperature information and sends the electrical signal carrying the temperature information to the display device 200, so that the display device 200 controls the brightness of the image light of the image generation unit 201 according to the temperature information, thereby realizing brightness control of the generated virtual image.

[0075] In some embodiments, the display device 200 can pre-set the correspondence between temperature information and PWM duty cycle as shown in Table 4, and determine the PWM duty cycle of the image generation unit 201 under specific temperature information based on the correspondence, so as to control the image generation unit 201 by changing the PWM duty cycle of the image signal, thereby achieving the purpose of adjusting the brightness of the image generation unit 201.

[0076] Table 4

[0077] It is understood that Table 4 shows the correspondence between temperature values ​​and PWM duty cycles, using temperature information as temperature values. When the temperature information is a resistance value, Table 4 can also show the correspondence between the resistance value and the PWM duty cycle. It should be noted that Table 4 is merely illustrative and not limiting. For example, Table 4 can also show the correspondence between a range of temperature values ​​or a range of resistance values ​​and the duty cycle. After the display device 200 obtains the temperature value or resistance value from the electrical signal, it determines the corresponding PWM duty cycle based on the temperature value or resistance value range within which the temperature value or resistance value falls.

[0078] In other embodiments, the display device 200 may pre-set a correspondence between temperature information and PWM control values ​​as shown in Table 5, and determine the PWM control value at a specific temperature based on the correspondence, thereby changing the PWM control value of the image signal to change the duty cycle of the PWM of the image signal, thereby controlling the image generation unit 201 and further adjusting the brightness of the image generation unit 201.

[0079] Table 5

[0080] It will be appreciated that Table 5 shows the correspondence between temperature values ​​and PWM control values, using temperature information as temperature values. When the temperature information is a resistance value, Table 5 may also show the correspondence between the resistance value and the PWM control value. It should be noted that Table 5 is merely illustrative and not limiting. For example, Table 5 may also show the correspondence between a range of temperature values ​​or a range of resistance values ​​and PWM control values. After the display device 200 obtains the temperature value or resistance value from the electrical signal, it determines the corresponding PWM control value based on the temperature value or resistance value range within which the temperature value or resistance value falls.

[0081] In some other embodiments, when the image generating unit 201 uses an LED light source (for example, the backlight of an LCD display is an LED light source), the display device 200 can pre-set the correspondence between temperature information and operating current as shown in Table 6, and determine the operating current of the image generating unit 201 under specific temperature information based on the correspondence, so as to achieve control of the image generating unit 201 by changing the operating current of the image signal, thereby achieving the purpose of adjusting the brightness of the image generating unit 201.

[0082] Table 6

[0083] It will be appreciated that Table 6 shows the correspondence between temperature values ​​and LED operating currents, using temperature information as temperature values. When the temperature information is a resistance value, Table 6 can also show the correspondence between the resistance value and the LED operating current. It should be noted that Table 6 is merely illustrative and not limiting. For example, Table 6 can also show the correspondence between a range of temperature values ​​or a range of resistance values ​​and the LED operating current. After the display device 200 obtains the temperature value or resistance value from the electrical signal, it determines the corresponding LED operating current based on the temperature value or resistance value range within which the temperature value or resistance value falls.

[0084] It should be noted that Tables 4 to 6 above are merely illustrative and non-limiting. Any basic variations of Tables 4 to 6 should be within the scope of protection of this application. It should also be understood that the data in Tables 4 to 6 above do not limit the scope of protection of this application. When expressed as a range, the range can be divided evenly or unevenly and still fall within the scope of protection of this application.

[0085] Based on the above solution, the brightness of the virtual image displayed by the display system 400 provided in the embodiment of the present application can be adjusted as the temperature of the image generation unit changes, thereby expanding the application scenarios of the display system 400 provided in the present application and satisfying the user's rich scene experience.

[0086] Optionally, the display system 400 may further include the ambient light sensor 310 shown in FIG. 3 . In this case, the display device 200 will receive temperature information from the temperature sensor 410 and first brightness information from the ambient light sensor 310 , and adjust the brightness of the generated virtual image based on the first brightness information and the temperature information.

[0087] It should be noted that in order to ensure the normal operation of the display device 200, the ambient temperature of the display device 200 during operation cannot be too high. This is because an excessively high ambient temperature may damage the image generation unit 201, thereby affecting the generation of virtual images by the display device 200. Therefore, when the display device 200 adjusts the brightness of the virtual image based on the first brightness information and the temperature information, the display device 200 needs to adjust the brightness based on the first brightness information within a reasonable temperature range that satisfies the operation of the image generation unit. In other words, the adjustment of the brightness of the virtual image by the display device 200 is only meaningful when it ensures that the image generation unit 201 is not damaged by high temperature. For example, when the temperature information is less than or equal to the threshold value of the temperature information, the display device 200 adjusts the brightness of the virtual image based on the first brightness information in Tables 1 to 3 above; when the temperature information is greater than the threshold value of the temperature information, the maximum brightness of the virtual image depends on the brightness corresponding to the temperature information, that is, the temperature information becomes the key factor in the brightness of the virtual image at this time. In other words, to ensure the normal operation of the image generation unit, even if the virtual image brightness corresponding to the first brightness information is higher than the virtual image brightness corresponding to the temperature information, the display device 200 cannot adjust the virtual image brightness to the brightness corresponding to the first brightness information. The maximum brightness can only be adjusted to the virtual image brightness corresponding to the temperature information. In some embodiments, when the temperature information is greater than the threshold temperature information, the display device 200 only adjusts the brightness lower based on the first brightness information. Alternatively, in other embodiments, the display device 200 adjusts the brightness of the current virtual image to a fixed value, such as the virtual image brightness corresponding to the threshold temperature information, or the virtual image brightness corresponding to the threshold temperature information or lower than the threshold temperature information.

[0088] For example, the display device 200 can pre-set the correspondence between the temperature information, the first brightness information and the PWM duty cycle as shown in Table 7, and determine the PWM duty cycle of the image generation unit 201 under specific temperature information and first brightness information based on the correspondence, thereby achieving the purpose of adjusting the brightness of the image generation unit 201.

[0089] Table 7

[0090] It is understandable that Table 7 only shows the correspondence between temperature, light intensity, and PWM duty cycle as an example. Since temperature information can also be a resistance value, the first brightness information can also be light brightness, and the display device 200 can also change the PWM control value of the image generation unit 201 (as shown in Table 2 above) or the backlight current (as shown in Table 3 above) when performing brightness adjustment, there are various correspondences between temperature information and first brightness information, such as the correspondence between resistance value, light intensity, and PWM duty cycle, or the correspondence between temperature value, light intensity, and PWM control value, etc., which are not enumerated here.

[0091] It is also understood that Table 7 illustrates, by way of example, a fixed brightness value for the virtual image displayed by the display device 200 when the temperature exceeds a threshold temperature (i.e., 66° C.). Table 7 may also illustrate corresponding relationships in which the PWM duty cycle decreases under different first brightness information when the temperature exceeds the threshold temperature, and all such relationships are within the scope of protection of the present application.

[0092] FIG5 is a schematic diagram of the structure of a display system 500 provided in an embodiment of the present application. As shown in FIG5 , the display system 500 includes a display device 200 and a control device 510. The display system 500 can be applied to the in-vehicle display system 100 shown in FIG1 . Specifically, the control device 510 is configured to generate second brightness information and transmit the second brightness information to the display device 200. The second brightness information is used to indicate the user's desired viewing brightness. The display device 200 is configured to adjust the brightness of the generated virtual image based on the second brightness information. The control device 510 is electrically or wirelessly connected to the display device 200.

[0093] Optionally, when the control device 510 is electrically connected to the display device 200, the control device 510 can be arranged on the housing of the display device 200, for example, on the housing below the window unit 203 as shown in FIG5 . Alternatively, the control device 510 is connected to the display device via an external wire.

[0094] Optionally, 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 via a wireless local area network (WLAN) or a Bluetooth device. In this case, the system is as shown in FIG. 6 .

[0095] It should be noted that in the present application, the user's desired viewing brightness can be the brightness adjusted by the user himself, or the brightness mode selected by the user, or the user-adjusted brightness data learned by the display system 500 (such as the control device 510) through the user's brightness adjustment habits. For example, when the user's desired viewing brightness is the brightness adjusted manually by the user, the second brightness information can be a brightness value generated based on the user's manual adjustment, or a brightness change generated by the user's manual adjustment. It should be understood that since the image light emitted from the image generation unit 201 loses energy during the reflection process during the display device 200 generating the virtual image, the brightness of the virtual image generated by the display device 200 is different from the brightness of the image generation unit 201. Therefore, in the present application, the user's desired viewing brightness refers to the virtual image brightness, and the display device changes the brightness of the image generation unit 201 according to the desired viewing brightness to achieve the user's desired viewing brightness. In other words, there is a corresponding relationship between the virtual image brightness and the brightness of the image generation unit 201, so that the display device can adjust the brightness of the image generation unit 201 according to this corresponding relationship.

[0096] Specifically, after the control device 510 obtains the second brightness information, it generates an electrical signal or wireless signal carrying the second brightness information, and sends the electrical signal carrying the temperature information to the display device 200, so that the display device 200 controls the brightness of the image light of the image generation unit 201 according to the temperature information, thereby realizing brightness control of the generated virtual image.

[0097] In some embodiments, when the user's desired viewing brightness is a user-adjusted brightness, the user adjusts the desired brightness through a control device, for example, by using a control button on the control device. In one conceivable embodiment, the control interface of the control device includes two control buttons, "+" and "-," as shown in FIG7(a), where "+" is used to increase the brightness and "-" is used to decrease the brightness. For example, when the user wants to increase the brightness by 5 brightness units, they can press "+" 5 times in succession. The brightness unit corresponds to the amount of brightness change, for example, the amount of brightness change in units of light intensity (lx). The accuracy of the brightness change can be designed based on different scene requirements and the performance of the image generation unit 201. When the display system 500 is used in scenes with low precision requirements, the brightness unit can be set larger to make each adjustment more obvious. When the display system 500 is used in scenes with high precision requirements, the brightness unit can be set smaller to make each adjustment more precise. In another possible implementation, the control interface of the control device includes two control buttons, "∧" and "∨," as shown in FIG7(b), where "∧" is used to increase the brightness and "∨" is used to decrease the brightness. Similarly, the accuracy of the brightness change can be designed based on different scene requirements and the performance of the image generation unit 201, and will not be further described.

[0098] It is understandable that FIG7 is only an example, and the control device may further include multiple buttons for adjusting brightness, or other forms of buttons, which are not limited in this application.

[0099] In some embodiments, when the user's desired viewing brightness is the user-selected brightness mode, the user can select different brightness modes through the control device, such as night mode, day mode, dark mode, light mode, etc. Different modes represent different brightnesses. When the display device receives different brightness modes, it can adjust the brightness of the image generation unit 201 according to the preset brightness corresponding to the different brightness modes, so that the virtual image brightness meets the user's desired viewing brightness.

[0100] In yet other embodiments, when the user's desired viewing brightness is the user-adjusted brightness data 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, it can adjust the brightness of the image generation unit 201 according to the preset brightness corresponding to the different data, thereby ensuring that the virtual image brightness meets the user's desired viewing brightness. The user-adjusted brightness data learned by the control device 510 can be learned based on factors such as age, vision, eye health, and individual brightness sensitivity, and this application does not limit this.

[0101] Based on the above solution, the brightness of the virtual image displayed by the display system 500 provided in the embodiment of the present application can be changed through user control, thereby improving the flexibility of brightness adjustment and further improving the user experience.

[0102] Optionally, the display system 500 may further include the ambient light sensor 310 shown in FIG. 3 above. In this case, the display device 200 will receive the second brightness information from the control device 510 and the first brightness information from the ambient light sensor 310, and adjust the brightness of the generated virtual image based on the first brightness information and the second brightness information.

[0103] It is understood that when the display device 200 adjusts the brightness of the virtual image based on the first brightness information and the second brightness information, the user's desired viewing brightness may be the primary consideration when the display device 200 makes adjustments. In some embodiments, if the user's desired viewing brightness is a brightness adjusted by the user or user-adjusted brightness data, when the virtual image brightness corresponding to the first brightness information is higher than the user's desired viewing brightness, the display device 200 adjusts the virtual image brightness to the user's desired viewing brightness. When the virtual image brightness corresponding to the first brightness information is lower than the user's desired viewing brightness, the display device 200 first adjusts the virtual image brightness to the virtual image brightness corresponding to the first brightness information, and then further adjusts the virtual image brightness to the user's desired brightness. In other embodiments, if the user's desired viewing brightness is a user-selected brightness mode, the display device 200's brightness adjustment range needs to be adjusted within the user-selected brightness mode. In this case, the display device 200 performs adjustments based on the corresponding relationship of the first brightness information within the brightness range corresponding to the brightness mode. For example, if the user preselects the dark mode, when adjusting according to the ambient light, it is necessary to adjust according to the correspondence between any one of the PWM control value, PWM duty and backlight current value and the first brightness information in the dark mode.

[0104] Optionally, the display system 500 may further include the temperature sensor 410 shown in FIG. 4 above. In this case, the display device 200 will receive the second brightness information from the control device 510 and the temperature information from the temperature light sensor 410, and adjust the brightness of the generated virtual image based on the temperature information and the second brightness information.

[0105] It is understood that, to ensure the normal operation of the display device 200, the process by which the display device 200 adjusts the brightness of the virtual image based on the temperature information and the second brightness information can refer to the process by which the display device 200 adjusts the brightness of the virtual image based on the temperature information and the first brightness information described above, and a corresponding relationship as shown in Table 7 is pre-stored. For example, when the temperature information obtained by the display device 200 is within the threshold temperature information range, the display device 200 can use any of the methods described in Tables 1 to 3 to adjust the brightness of the virtual image based on the second brightness information. When the temperature information obtained by the display device 200 is greater than the threshold temperature information, the display device 200 can only adjust the brightness lower based on the second brightness information. Alternatively, the brightness of the virtual image can be adjusted to a fixed value. Optionally, the display system 500 may also include the ambient light sensor 310 shown in Figure 3 above and the temperature sensor 410 shown in Figure 4 above. In this case, the display device 200 will receive the second brightness information from the control device 510, the first brightness information from the ambient light sensor 310, and the temperature information from the temperature light sensor 410, and adjust the brightness of the generated virtual image based on the first brightness information, the temperature information, and the second brightness information.

[0106] It will be appreciated that when the display device 200 adjusts the virtual image brightness based on temperature information, first brightness information, and second brightness information, the priority of the information used by the display device 200 for adjusting the virtual image brightness is, from highest to lowest, temperature information, second brightness information, and first brightness information. In other words, the brightness adjusted by the display device 200 must meet the user's desired brightness while satisfying the temperature information. In some embodiments, when the temperature information acquired by the display device 200 is within a threshold temperature range, the display device 200 adjusts the virtual image brightness based on the first brightness information and the second brightness information. In this case, reference can be made to the above-described process for adjusting the virtual image brightness based on the first brightness information and the second brightness information. Specifically, if the user's desired viewing brightness is a user-adjusted brightness or user-adjusted brightness data, and the virtual image brightness corresponding to the first brightness information is higher than the user's desired viewing brightness, the display device 200 adjusts the virtual image brightness to the user's desired viewing brightness. Alternatively, the display device 200 may first adjust the virtual image brightness to the lower virtual image brightness corresponding to the first brightness information and then further increase the virtual image brightness to the user's desired brightness. If the user's desired viewing brightness is the brightness mode selected by the user, the display device 200 needs to adjust the brightness within the user's selected brightness mode. In other embodiments, when the temperature information obtained by the display device 200 is greater than the threshold temperature information range, the display device 200 can only adjust the brightness lower based on the second brightness information. Alternatively, the brightness of the virtual image can be adjusted to a fixed value.

[0107] FIG8 is a circuit diagram of a display device provided in an embodiment of the present application. As shown in FIG8 , the circuit in the display device mainly includes a host CPU 1201, 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, a display circuit 1210, and a modulator 1212. Among them, the main processor 1201 and its peripheral components, such as the external memory interface 1202, the internal memory 1203, the audio module 1204, the video module 1205, the power module 1206, the wireless communication module 1207, the I / O interface 1208, the video interface 1209, and the display circuit 1210 can be connected via a bus. The main processor 1201 can be called a front-end processor.

[0108] In addition, the circuit diagrams shown in the embodiments of the present application do not constitute specific limitations on the display device. In other embodiments of the present application, the display device may include more or fewer components than shown, or may combine or separate certain components, or arrange the components differently. The components shown in the diagrams may be implemented in hardware, software, or a combination of software and hardware.

[0109] The main processor 1201 includes one or more processing units. For example, the main processor 1201 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processor (NPU). Different processing units may be independent devices or integrated into one or more processors.

[0110] The main processor 1201 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the main processor 1201 is a cache memory. This memory can store instructions or data that the main processor 1201 has just used or is reusing. If the main processor 1201 needs to use the instruction or data again, it can directly call it from the memory. This avoids repeated accesses, reduces the waiting time of the main processor 1201, and thus improves system efficiency.

[0111] In some embodiments, the display device may further include multiple input / output (I / O) interfaces 1208 connected to the main processor 1201. The interfaces 1208 may include an I2C (Inter-Integrated Circuit) interface, an I2S (Inter-Integrated Circuit Sound) interface, a PCM (Pulse Code Modulation) interface, a UART (Universal Asynchronous Receiver / Transmitter) interface, a MIPI (Mobile Industry Processor Interface) interface, a GPIO (General-Purpose Input / Output) interface, a SIM (Subscriber Identity Module) interface, and / or a USB (Universal Serial Bus) interface. The I / O interfaces 1208 may be connected to devices such as a mouse, touchpad, keyboard, camera, speaker, microphone, etc., as well as physical buttons on the display device (e.g., volume button, brightness adjustment button, power button, etc.).

[0112] The external memory interface 1202 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the display device. The external memory card communicates with the main processor 1201 through the external memory interface 1202 to implement data storage function.

[0113] The internal memory 1203 can be used to store computer executable program codes, which include instructions. The internal memory 1203 may include a program storage area and a data storage area. The program storage area may store an operating system, an application required for at least one function (such as a call function, a time setting function, etc.), etc. The data storage area may store data created during the use of the display device (such as a phone book, world time, etc.), etc. In addition, the internal memory 1203 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash memory (UFS), etc. The main processor 1201 executes various functional applications and data processing of the display device by running instructions stored in the internal memory 1203 and / or instructions stored in a memory provided in the main processor 1201.

[0114] The display device can implement audio functions such as music playback and calls through the audio module 1204 and the application processor.

[0115] The audio module 1204 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. The audio module 1204 can also be used to encode and decode audio signals, such as for playing or recording. In some embodiments, the audio module 1204 can be provided in the main processor 1201, or some functional modules of the audio module 1204 can be provided in the main processor 1201.

[0116] The video interface 1209 can receive external audio and video signals, which can specifically be a High Definition Multimedia Interface (HDMI), a Digital Visual Interface (DVI), a Video Graphics Array (VGA), a Display Port (DP), etc. The video interface 1209 can also output video. When the display device is used as an in-vehicle display, the video interface 1209 can receive speed signals and power signals input from peripheral devices, and can also receive external VR video signals. When the display device is in use, the video interface 1209 can receive video signals input from an external computer or terminal device.

[0117] The video module 1205 can decode the video input from the video interface 1209, for example, by performing H.264 decoding. The video module can also encode the video captured by the display device, for example, by performing H.264 encoding on the video captured by an external camera. Furthermore, the main processor 1201 can also decode the video input from the video interface 1209 and output the decoded image signal to the display circuit 1210.

[0118] The display circuit 1210 and modulator 1212 are used to display corresponding images. In this embodiment, the video interface 1209 receives an external video source signal, which the video module 1205 decodes and / or digitizes before outputting one or more image signals to the display circuit 1210. The display circuit 1210 drives the modulator 1212 based on the input image signal to image the incident polarized light and output image light. Furthermore, the main processor 1201 may also output one or more image signals to the display circuit 1210.

[0119] In this embodiment, the display circuit 1210 and the modulator 1212 are electronic components in the image generating unit, and the display circuit 1210 can be referred to as a driving circuit.

[0120] The power module 1206 is used to provide power to the main processor 1201 and the light source 1200 based on input power (e.g., direct current). The power module 1206 may include a rechargeable battery, which can provide power to the main processor 1201 and the light source 1200. Light emitted by the light source 1200 can be transmitted to the modulator 1212 for imaging, thereby forming an image light signal.

[0121] The wireless communication module 1207 enables the display device to communicate wirelessly with the outside world. It can provide wireless local area networks (WLAN) (such as Wireless Fidelity (Wi-Fi) networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), infrared technology (IR) and other wireless communication solutions. The wireless communication module 1207 can be one or more devices that integrate at least one communication processing module. The wireless communication module 1207 receives electromagnetic waves via an antenna, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the main processor 1201. The wireless communication module 1207 can also receive signals to be sent from the main processor 1201, frequency modulate them, amplify them, and convert them into electromagnetic waves for radiation through the antenna.

[0122] In addition, in addition to being input through the video interface 1209, the video data decoded by the video module 1205 can also be received wirelessly through the wireless communication module 1207 or read from an external memory. For example, the display device can receive video data from a terminal device or an in-vehicle entertainment system through the wireless local area network in the vehicle, and the display device can also read audio and video data stored in an external memory.

[0123] The above-mentioned display device can be installed on a vehicle. Please refer to Figure 9, which is a schematic diagram of a possible functional framework of a vehicle provided in an embodiment of the present application.

[0124] As shown in FIG9 , the functional framework of a vehicle may include various subsystems, such as a sensor system 12, a control system 14, one or more peripheral devices 16 (one of which is shown as an example), a power supply 18, a computer system 20, and an onboard display system 22. Optionally, the vehicle may also include other functional systems, such as an engine system that provides power for the vehicle, etc., which are not limited in this application.

[0125] The sensor system 12 may include a plurality of detection devices that sense the information being measured and convert the sensed information into electrical signals or other required information outputs according to certain rules. As shown in the figure, these detection devices may include a global positioning system (GPS), a vehicle speed sensor, an inertial measurement unit (IMU), a radar unit, a laser rangefinder, a camera, a wheel speed sensor, a steering sensor, a gear position sensor, or other components for automatic detection, etc., and this application does not limit them.

[0126] The control system 14 may include several components, such as a steering unit, a braking unit, a lighting system, an autonomous driving system, a map navigation system, a network timing system, and an obstacle avoidance system, as shown. Optionally, the control system 14 may also include components such as a throttle controller and an engine controller for controlling vehicle speed, although this application does not limit this.

[0127] The peripheral devices 16 may include several components, such as the communication system shown in the figure, a touch screen, a user interface, a microphone, and a speaker. The communication system is used to enable network communication between the vehicle and other devices. In practical applications, the communication system may utilize wireless communication technology or wired communication technology to enable network communication between the vehicle and other devices. Wired communication technology may involve communication between the vehicle and other devices via network cables or optical fibers.

[0128] Power supply 18 represents a system that provides electrical power or energy to the vehicle, and may include, but is not limited to, rechargeable lithium batteries or lead-acid batteries. In practical applications, one or more battery components in the power supply are used to provide electrical energy or energy for starting the vehicle. The type and material of the power supply are not limited in this application.

[0129] Several functions of the vehicle are controlled and implemented by the computer system 20. The computer system 20 may include one or more processors 2001 (one processor is shown as an example) and a memory 2002 (also referred to as a storage device). In actual applications, the memory 2002 is also inside the computer system 20, or it can be outside the computer system 20, for example, as a cache in the vehicle, etc., which is not limited in this application.

[0130] The processor 2001 may include one or more general-purpose processors, such as a graphics processing unit (GPU). The processor 2001 may be used to run relevant programs or instructions corresponding to the programs stored in the memory 2002 to implement corresponding functions of the vehicle.

[0131] The memory 2002 may include a volatile memory, such as RAM; the memory may also include a non-volatile memory, such as ROM, flash memory, HDD or solid-state drive SSD; the memory 2002 may also include a combination of the above types of memory. The memory 2002 can be used to store a set of program codes or instructions corresponding to the program codes, so that the processor 2001 can call the program codes or instructions stored in the memory 2002 to implement the corresponding functions of the vehicle. In the present application, the memory 2002 can store a set of program codes for vehicle control, and the processor 2001 can call the program codes to control the safe driving of the vehicle. How to achieve safe driving of the vehicle is described in detail below in this application.

[0132] Optionally, in addition to storing program code or instructions, memory 2002 may also store information such as road maps, driving routes, and sensor data. Computer system 20 may integrate with other components in the vehicle functional framework diagram, such as sensors and GPS in the sensor system, to implement relevant vehicle functions. For example, computer system 20 may control the vehicle's direction or speed based on data input from sensor system 12, although this application does not limit this.

[0133] The in-vehicle display system 22 may include several components, such as a controller and an in-vehicle display. The controller 222 is used to generate an image (e.g., an image of VR content) based on user instructions and send the image to the in-vehicle display for display. The in-vehicle display may include an image generation unit, a window unit, and an image magnification unit. Passengers can view the target image presented on the in-vehicle display through the window unit. The functions of some components in the in-vehicle display system may also be implemented by other subsystems of the vehicle. For example, the controller may also be a component of the control system.

[0134] FIG9 of this application shows four subsystems: sensor system 12, control system 14, computer system 20, and onboard display system 22. These subsystems are merely illustrative and not limiting. In practice, a vehicle may combine several components according to different functions to create subsystems with corresponding functions. In practice, a vehicle may include more or fewer systems or components, and this application does not limit this.

[0135] The above-mentioned means of transportation can be a car, a truck, a bus, a ship, an airplane, a helicopter, an RV, a train, etc., and the embodiments of the present application do not make any special limitations.

[0136] Unless otherwise defined, technical or scientific terms used herein shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0137] The above description is only one embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the present application shall be included in the scope of protection of the present application.

Claims

1. A display system, characterized in that: For vehicle-mounted display, the display system includes an ambient light sensor and a display device, the ambient light sensor is connected to the display device, wherein: The ambient light sensor is used to obtain first brightness information and send the first brightness information to the display device, where the first brightness information is used to indicate the brightness of the ambient light in which the display device is located; The display device is used to adjust the brightness of the generated virtual image according to the first brightness information, wherein the display device includes an image generating unit, a window unit and an image magnifying unit, the image generating unit is used to emit image light to the window unit, the window unit is used to reflect the image light from the image generating unit to the image magnifying unit, and transmit the image light from the image magnifying unit, the window unit is also used for human eyes to view the virtual image formed by the image light through the window unit, and the image magnifying unit is used to reflect the image light from the window unit to the window unit.

2. The display system according to claim 1, characterized in that: The ambient light sensor is arranged on a housing of the display device.

3. The display system according to claim 1, characterized in that: The display system further comprises: a temperature sensor, the display device being connected to the temperature sensor. The temperature sensor is used to obtain temperature information and send the temperature information to the display device, wherein the temperature information is used to indicate the temperature of the image generating unit; The display device is specifically used to adjust the brightness of the generated virtual image according to the first brightness information and the temperature information.

4. The display system according to claim 3, characterized in that: The temperature sensor is arranged on the image generating unit.

5. The display system according to claim 3, characterized in that: The display system further comprises: a control device, The control device is used to generate second brightness information and send the second brightness information to the display device, wherein the second brightness information is used to indicate a viewing brightness desired by a user; The display device is specifically used to adjust 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 according to claim 5, characterized in that: The control device is electrically connected to the display device, and the second brightness information is carried in an electrical signal.

7. The display system according to claim 6, characterized in that: The control device is arranged on a housing of the display device.

8. The display system according to claim 5, characterized in that: The control device is connected to the display device wirelessly, and the second brightness information is carried in a wireless signal.

9. A means of transport, characterized in that: The invention comprises the display system as claimed in claim 1 above.

10. The vehicle according to claim 9, characterized in that: The display system is arranged at at least one of a headrest of a seat of the vehicle, a backrest of a seat of the vehicle, and a co-pilot platform of the vehicle.

11. A cockpit system, characterized in that: The invention comprises a display device and a display system as claimed in claim 1.

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