CN117558223A

CN117558223A - Cabin display system

Info

Publication number: CN117558223A
Application number: CN202311492303.5A
Authority: CN
Inventors: 陈昱吉; 黄腾莹; 刘志翔; 徐立恒; 刘启宇; 王琮雄; 郑佳升
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2023-05-18
Filing date: 2023-11-10
Publication date: 2024-02-13
Also published as: CN117863868A; CN117555503A

Abstract

The invention discloses a cabin display system which comprises a cabin, a first display device, a second display device, a first light sensor, a second light sensor and a brightness distribution calculation module. The first light sensor is adapted to detect a first ambient light level. The second light sensor is adapted to detect a second ambient light level. The brightness distribution calculation module is adapted to calculate first brightness, second brightness, third brightness and fourth brightness of the first display area and the second display area of the first display device and the third display area and the fourth display area of the second display device respectively under the same display gray scale according to different first ambient light brightness and second ambient light brightness, and the first brightness, the second brightness, the third brightness and the fourth brightness are different from each other.

Description

Cabin display system

Technical Field

The present invention relates to a display system, and more particularly to a cockpit display system.

Background

Related applications of displays in the automotive field are increasingly more open-ended as display technology is becoming more mature. In recent years, in some of the higher-order models sold in the market, the conventional instrument panel, rearview mirror or center console has been gradually replaced by a flat or curved display. As the size of the in-vehicle display is continuously increased, control of the screen brightness has a great influence on the operational comfort of driving. For example, during driving of a vehicle, the change of the external ambient light source sometimes makes the on-board display not clearly visible to human eyes due to external strong light irradiation, or the screen brightness is too dazzling in a dim environment to affect driving safety. In addition, the brightness of the existing vehicle-mounted display is mostly required to be manually adjusted by driving, and the selectable brightness setting is not too many to meet the requirements of various operation situations.

Disclosure of Invention

The invention provides a cabin display system which has better display effect under the use conditions of different environmental light distribution.

The invention discloses a cabin display system, which comprises a cabin, a first display device, a second display device, a first light sensor, a second light sensor and a brightness distribution calculation module. The first display device and the second display device are arranged in the cabin side by side along the arrangement direction. The first display device is provided with a first display area and a second display area. The second display device is provided with a third display area and a fourth display area. The second display area is located between the first display area and the third display area. The third display area is located between the second display area and the fourth display area. The first and second photo-sensors are arranged along an arrangement direction and adapted to detect the first and second ambient light levels, respectively. The brightness distribution calculation module is adapted to calculate a first brightness, a second brightness, a third brightness and a fourth brightness of the first display area, the second display area, the third display area and the fourth display area respectively under the same first display gray scale according to the first ambient light brightness and the second ambient light brightness. When the first ambient light level is different from the second ambient light level, the first luminance, the second luminance, the third luminance, and the fourth luminance are different from each other.

Based on the above, in the cabin display system according to an embodiment of the invention, the first light sensor disposed at the first display device side and the second light sensor disposed at the second display device side are adapted to detect the ambient light level in real time. The brightness distribution calculation module can calculate a plurality of brightnesses of a plurality of display areas of the first display device and the second display device under the same display gray scale according to the first ambient light brightness and the second ambient light brightness detected by the two light sensors. The brightness relationship of the display areas can be changed according to the brightness relationship of the first ambient light brightness and the second ambient light brightness, so that the display quality of the cabin display system under different ambient light sources can be effectively improved, and the visual experience of a user can be further optimized.

Drawings

FIG. 1 is a schematic diagram of a cockpit display system according to one embodiment of the invention.

Fig. 2 is a block diagram of the cockpit display system of fig. 1.

FIG. 3 is a block diagram of a flow chart of the correction module of the cockpit display system of FIG. 2 in operation.

FIG. 4 is a block diagram illustrating a process performed by the luminance distribution calculation module of FIG. 2.

Fig. 5A and 5B are schematic operation diagrams of the first display device and the second display device of fig. 1 under external sunlight.

Fig. 6 is a schematic diagram illustrating setting of the brightness interval adjustment module of fig. 4 by using a user interface.

FIG. 7 is a block diagram illustrating a process performed by the object analysis module and the brightness adjustment module of FIG. 2.

Fig. 8A and 8B are schematic operation diagrams of the first display device and the second display device of fig. 1 under display objects with different importance.

Fig. 9 is a block diagram of a process performed by the brightness adjustment module of fig. 2.

Fig. 10A and 10B are schematic diagrams illustrating operations of the first display device and the second display device of fig. 1 under street lamp illumination.

FIG. 11 is a block diagram illustrating a process performed by the head up displays and the luminance distribution calculation module of FIG. 2.

Fig. 12 is a schematic diagram of the operation of the multiple heads-up display of fig. 1 under street lamp illumination.

FIG. 13 is a block diagram illustrating a process of operating the image adjustment module of FIG. 2.

Fig. 14 is a side view of the head-up display of fig. 2 when the image adjustment module is in operation.

FIG. 15 is a block diagram illustrating a process performed by the transparent display and the luminance distribution calculation module of FIG. 2.

Fig. 16 is a schematic diagram of the operation of the transparent display of fig. 1 under street lamp illumination.

Fig. 17 is a schematic diagram of a cockpit display system according to another embodiment of the present invention.

Wherein, the reference numerals:

100. 100A cockpit display system

111 first display device

112 second display device

121. 122, 123 head-up display

121P, 122P, 123P projection light machine

130 transparent display

150 eyeball tracking module

151 first image pickup element

152 second image pickup element

200 control unit

210 correction module

230 luminance distribution calculation Module

250 brightness interval adjusting module

270 object analysis Module

280 brightness adjusting module

290 image adjusting module

AD: alignment direction

APP applications

BR1 to BR4, HBR1 to HBR3, OBJ-BR, luminance

BRI1 to BRI3 include a first luminance section to a third luminance section

BLBR1 to BLBR4, first backlight brightness to fourth backlight brightness

BLU1 first backlight module

BLU2 second backlight module

CB ambient light correction brightness

CONF-configuration

CP cabin

DA 1-DA 4, first display area-fourth display area

DBIF instrument panel information

DP1 first non-self-luminous display panel

DP2 second non-self-luminous display panel

DPB_LUT panel brightness setting lookup table

DR, DR2 Driving

DS driver's seat

DSB 1-DSB 3, first display set brightness-third display set brightness

EVB1 first ambient light level

EVB2 second ambient light level

EVB_LUT (ambient light level range lookup table)

EYE, EYE2, EYEs

GZ-BR luminance

GZDA (Global navigation Alternatively-video-audio) gazing area

HDA1 to HDA3, first display region to third display region

IM1, IM2, IM1a video information

IMS video signal

LL lower interval limit

LSR1, LSR1-A first light sensor

LSR2, LSR2-A second light sensor

LSR3-A third photo sensor

MUS music controller

Object importance lookup table

Object to be displayed (object to be displayed) object (object to be displayed) 1, object to be displayed (object to be displayed) 2, object to be displayed 3

OBJ1DA, OBJ2DA, OBJ3DA display area

PSS (Power System stabilizer) auxiliary driver seat

SB standard brightness

TBR1 and TBR2, display luminance

TDA1, TDA2, transparent display area

UI user interface

Upper limit of interval

VD, viewing direction

WD perspective window

Detailed Description

The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.

As used herein, "about," "approximately," "essentially," or "substantially" includes both the values and average values within an acceptable deviation of the particular values as determined by one of ordinary skill in the art, taking into account the particular number of measurements and errors associated with the measurements (i.e., limitations of the measurement system) in question. For example, "about" may mean within one or more standard deviations of the stated values, or within, for example, ±30%, ±20%, ±15%, ±10%, ±5%. Further, as used herein, "about," "approximately," "essentially," or "substantially" may be used to select a range of more acceptable deviations or standard deviations depending on the measured, cut, or other property, and not one standard deviation may be used for all properties.

In the drawings, the thickness of layers, films, panels, regions, etc. are exaggerated for clarity. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connection. Furthermore, "electrically connected" may be used in a manner that other elements are present between the two elements.

Moreover, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe one element's relationship to another element as illustrated. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one of the figures is turned over, elements described as being on the "lower" side of other elements would then be oriented on the "upper" side of the other elements. Thus, the exemplary term "lower" may include both "lower" and "upper" orientations, depending on the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "above" or "below" can encompass both an orientation of above and below.

Exemplary embodiments are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments. Thus, shape variations of the illustrations as a result, for example, of manufacturing techniques and/or (and/or) tolerances are to be expected. Thus, the embodiments described herein should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an area shown or described as being flat may generally have rough and/or nonlinear features. Furthermore, the acute angles shown may be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the claims.

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.

FIG. 1 is a schematic diagram of a cockpit display system according to one embodiment of the invention. Fig. 2 is a block diagram of the cockpit display system of fig. 1. FIG. 3 is a block diagram of a flow chart of the correction module of the cockpit display system of FIG. 2 in operation. Referring to fig. 1 and 2, a cabin display system 100 suitable for being installed in a cabin CP includes a first display device 111, a second display device 112, a plurality of head up displays and a transparent display 130. In the present embodiment, the cabin CP is, for example, an automobile cabin, but is not limited thereto. In other embodiments, the cabin may also be a simulator cabin or a computer cabin.

The first display device 111 is provided in front of the driver seat DS in the cabin CP and can function as an instrument panel of an automobile. That is, the first display device 111 is adapted to display vehicle-mounted information including, for example, vehicle speed, power consumption, engine speed, and dashboard light, but is not limited thereto. The second display device 112 is disposed in front of the passenger seat PSS in the cabin CP and is adapted to display interactive contents enabling the operation of the passenger (or the passenger). That is, the first display device 111 and the second display device 112 are provided in the cabin CP side by side along the arrangement direction AD of the driver's seat DS and the passenger's seat PSS.

A plurality of head up displays are disposed above the first display device 111 and adapted to display navigation information, driving information (e.g., warning sign and distance sign) or other image information on the perspective window WD of the cabin CP in a spliced manner or each independently. In the present embodiment, the number of head up displays of the cabin display system 100 may be three, but not limited to, the first head up display 121, the second head up display 122 and the third head up display 123. For example, the first head-up display 121, the second head-up display 122 and the third head-up display 123 respectively have a first projection light machine 121P, a second projection light machine 122P and a third projection light machine 123P. The projection machines are disposed on a platform behind the first display device 111 and the second display device 112, and project images toward the viewing window WD.

The transparent display 130 is arranged to overlap the see-through window WD of the cabin CP and is adapted to display the image information IM2 as in fig. 12. The image information IM2 includes, for example, but is not limited to, a driving speed limit, a vehicle gear, a vehicle speed, or other driving information. In this embodiment, the transparent display 130 may be located between the projection ranges of the three projection light machines on the perspective window WD and the first display device 111.

In the present embodiment, the display sizes of the first display device 111, the second display device 112, the head-up display and the transparent display 130 are, for example, but not limited to, 30.4 inches, 21.6 inches, 10.3 inches and 15.5 inches, respectively.

Further, the cockpit display system 100 further includes a control unit 200 electrically connected to the first display device 111, the second display device 112, the first head up display 121, the second head up display 122, the third head up display 123 and the transparent display 130.

In the present embodiment, the control unit 200 is, for example, a cockpit area controller (cockpit domain controller, CDC), has high-performance computer computing capability, and is suitable for executing various algorithms to realize the function of actively adjusting the display screen.

To perform these algorithms, the cockpit display system 100 further includes a first light sensor LSR1 corresponding to the driver seat DS (or the first display device 111), a second light sensor LSR2 corresponding to the passenger seat PSS (or the second display device 112), and an eye tracking module 150 corresponding to the driver seat DS and the passenger seat PSS. The first and second photo sensors LSR1 and LSR2 may be arranged at intervals along the arrangement direction AD of the driver seat DS and the passenger seat PSS, and are adapted to detect the ambient light brightness around the cabin CP.

Eye tracking module 150 is adapted to detect the binocular position or gaze direction of a driver DR on driver's seat DS or a co-driver (i.e. passenger) on co-driver's seat PSS. For example, the eye tracking module 150 may include a first image capturing element 151 disposed corresponding to the driver seat DS and a second image capturing element 152 disposed corresponding to the passenger seat PSS. In order to perform detection in a dim cabin CP, the eye tracking module 150 may optionally include an Infrared (IR) light source, but is not limited thereto.

The control unit 200 can selectively execute a specific algorithm to actively adjust the brightness of the display screen or the position of the display content on the screen according to the ambient light brightness obtained by the first light sensor LSR1 and the second light sensor LSR2 or the binocular position or the sight line direction obtained by the eye tracking module 150 for driving DR or co-driving (not shown). The algorithms mentioned herein include, for example, the correction module 210, the brightness distribution calculation module 230 and the image adjustment module 290 included in the control unit 200.

Exemplary descriptions will be made below regarding how the cabin display system 100 adjusts the display brightness of a display device or display, respectively, in various contexts.

FIG. 4 is a block diagram illustrating a process performed by the luminance distribution calculation module of FIG. 2. Fig. 5A and 5B are schematic operation diagrams of the first display device and the second display device of fig. 1 under external sunlight. Fig. 6 is a schematic diagram illustrating setting of the brightness interval adjustment module of fig. 4 by using a user interface.

Referring to fig. 4, 5A and 5B, the first display device 111 includes a first backlight module BLU1 and a first non-self-luminous display panel DP1 that are disposed overlapping each other, and has a first display area DA1 and a second display area DA2. The second display device 112 includes a second backlight module BLU2 and a second non-self-luminous display panel DP2 disposed overlapping each other, and has a third display area DA3 and a fourth display area DA4. Along the arrangement direction AD of the first display device 111 and the second display device 112, the second display area DA2 is located between the first display area DA1 and the third display area DA3, and the third display area DA3 is located between the second display area DA2 and the fourth display area DA4.

The brightness distribution calculating module 230 is adapted to calculate the first brightness BR1, the second brightness BR2, the third brightness BR3 and the fourth brightness BR4 of the first display device 111 in the same display gray scale (e.g. the first display gray scale) according to the first ambient light level EVB1 detected by the first light sensor LSR1 and the second ambient light level EVB2 detected by the second light sensor LSR2, and the third display area DA3 and the fourth display area DA4 of the second display device 112 respectively. It is explained that, when the first ambient light level EVB1 is different from the second ambient light level EVB2, the first luminance BR1, the second luminance BR2, the third luminance BR3 and the fourth luminance BR4 are different from each other.

More specifically, since the first display device 111 and the second display device 112 of the present embodiment are respectively a combination of non-self-luminous display panel and backlight module, the brightness distribution calculating module 230 actually calculates the first backlight brightness BLBR1 and the second backlight brightness BLBR2 of the first backlight module BLU1 in the first display area DA1 and the second display area DA2 and the third backlight brightness BLBR3 and the fourth backlight brightness BLBR4 of the second backlight module BLU2 in the third display area DA3 and the fourth display area DA4 according to the first ambient light brightness EVB1 and the second ambient light brightness EVB 2. When the first ambient light level EVB1 is different from the second ambient light level EVB2, the first, second, third and fourth backlight brightnesses BLBR1, BLBR2, BLBR3 and BLBR4 are different from each other.

However, the present invention is not limited thereto. In other embodiments, the first display device and the second display device may be self-luminous display panels, and thus the brightness calculated by the brightness distribution calculating module 230 for each display area is the self-luminous brightness of the display panels.

In detail, in calculating the brightness of each display area of the display device, the brightness distribution calculating module 230 is further adapted to classify the first ambient light level EVB1 and the second ambient light level EVB2 according to the standard brightness SB in the configuration CONF set by the system factory. The classification of the ambient light may be performed according to an ambient light level interval lookup table evb_lut, which may be generated according to the standard brightness SB. Referring to fig. 3, it is particularly explained that, in the present embodiment, the calibration module 210 of the control unit 200 provides for calibrating the standard brightness SB in the configuration CONF before the system leaves the factory. In the calibration process, the first and second photo sensors LSR1 and LSR2 are adapted to detect an ambient light calibration luminance CB, and the calibration module 210 can adjust the standard luminance SB according to the ambient light calibration luminance CB, for example, when the ambient light calibration luminance CB is not equal to the preset standard luminance SB, the ambient light calibration luminance CB is used as the corrected standard luminance SB and written into the configuration CONF.

Referring to fig. 4, 5A and 5B, for example, in the present embodiment, the different ambient light levels can be divided into three brightness regions, such as the first brightness region BRI1, the second brightness region BRI2 and the third brightness region BRI3 of fig. 6, but not limited thereto. The ambient light brightness of the second brightness interval BRI2 is greater than the ambient light brightness of the first brightness interval BRI1 and less than the ambient light brightness of the third brightness interval BRI 3. The standard luminance SB is within the second luminance interval BRI 2. The ambient light level interval lookup table evb_lut defines the ambient light level ranges corresponding to the first luminance interval BRI1, the second luminance interval BRI2 and the third luminance interval BRI3, respectively.

After the classification of the first ambient light level EVB1 and the second ambient light level EVB2 is completed, the brightness distribution calculating module 230 calculates the first brightness BR1 and the second brightness BR2 of the first display device 111 and the third brightness BR3 and the fourth brightness BR4 of the second display device 112 (or the first backlight brightness BLBR1 and the second backlight brightness BLBR2 of the first backlight module BLU1 and the third backlight brightness BLBR3 and the fourth backlight brightness BLBR4 of the second backlight module BLU 2) according to the classification structure.

For example, when the first ambient light level EVB1 is in the third luminance interval BRI3 and the second ambient light level EVB2 is in the second luminance interval BRI2 or the first luminance interval BRI1, the luminance distribution calculating module 230 calculates the first luminance BR1, the second luminance BR2, the third luminance BR3 and the fourth luminance BR4 according to the third display setting luminance corresponding to the third luminance interval BRI3 and the second display setting luminance corresponding to the second luminance interval BRI2 or the first display setting luminance corresponding to the first luminance interval BRI1, wherein the second luminance BR2 is greater than the third luminance BR3 and smaller than the first luminance BR1 and the fourth luminance BR4 is smaller than the third luminance BR3. In the present embodiment, the correspondence between different brightness intervals of the ambient light and the display setting brightness of the display device can be defined in a panel brightness setting look-up table dpb_lut, but not limited thereto.

That is, when the first ambient light level EVB1 is greater than the second ambient light level EVB2, the brightness of each display area of the first display device 111 and the second display device 112 is sequentially from the first brightness BR1 of the first display area DA1, the second brightness BR2 of the second display area DA2, the third brightness BR3 of the third display area DA3, and the fourth brightness BR4 of the fourth display area DA 4.

When an external light source (for example, sunlight) is irradiated from one side of the first display device 111, the backlight brightness of each display area is sequentially arranged from large to small as a first backlight brightness BLBR1 of the first display area DA1, a second backlight brightness BLBR2 of the second display area DA2, a third backlight brightness BLBR3 of the third display area DA3, and a fourth backlight brightness BLBR4 of the fourth display area DA4 (as shown in fig. 5B). That is, the backlight brightness of the first backlight module BLU1 and the second backlight module BLU2 decreases from one side closer to the sunlight to the other side farther from the sunlight (i.e., is gradually distributed).

By increasing the backlight luminance on the side closer to the sun light, for example, the visibility of the instrument panel information DBIF displayed in the first display area DA1 by the first display device 111 under external strong light irradiation can be effectively improved. Since the third display area DA3 and the fourth display area DA4 of the second display device 112 are located at a side farther from sunlight, the interactive contents (such as the applications APP) displayed on the second display device 112 can still have a visibility equivalent to the dashboard information DBIF even though the backlight brightness thereof is lower than that of the first display area DA 1.

For example, when the vehicle with the cabin display system 100 (as shown in fig. 1) of the present embodiment runs on a road, if a significant change of the external ambient light is encountered, the detection result of the light sensor may trigger the brightness distribution calculation module 230 of the control unit 200 to perform the foregoing calculation process according to the currently detected ambient light brightness and update the backlight brightness distribution of the first display device 111 and the second display device 112 in real time, so as to optimize the driving and the visual experience of the passengers under different ambient light.

Further, in order to enable the user (e.g., driving the vehicle) to set the brightness interval for the ambient light classification after leaving the factory of the cabin display system 100, the control unit 200 may further optionally include a brightness interval adjustment module 250. Referring to fig. 4 and 6, the brightness interval adjustment module 250 is adapted to adjust the upper limits UL and LL of the first brightness interval BRI1, the second brightness interval BRI2 and the third brightness interval BRI3 according to the user setting on the user interface UI.

In addition, the user can adjust the first display setting brightness DSB1 of the first brightness interval BRI1, the second display setting brightness DSB2 of the second brightness interval BRI2, and the third display setting brightness DSB3 of the third brightness interval BRI3 through the user interface UI. For example, the user interface UI herein may be displayed on at least one of the first display device 111 and the second display device 112, but is not limited thereto.

FIG. 7 is a block diagram illustrating a process performed by the object analysis module and the brightness adjustment module of FIG. 2. Fig. 8A and 8B are schematic operation diagrams of the first display device and the second display device of fig. 1 under display objects with different importance. Referring to fig. 7, 8A and 8B, in the present embodiment, the control unit 200 further includes an object analysis module 270 and a brightness adjustment module 280, which are adapted to categorize the importance of the image content of the first display device 111 and the second display device 112 and enhance the display effect of the specific content.

The object analysis module 270 is adapted to analyze the image signals IMS of the first display device 111 and the second display device 112 to obtain the importance of the display object and the corresponding display area. For example, in the present embodiment, the object analysis module 270 can perform the real-time analysis on the display contents on the first display device 111 and the second display device 112 in fig. 8A, and distinguish between the display object OBJ1 (e.g. the dashboard information DBIF) located in the display area OBJ1DA, the display object OBJ2 (e.g. the music controller MUS) located in the display area OBJ2DA, and the display object OBJ3 (e.g. the application APP) located in the display area OBJ3 DA. The display area of the display object overlaps at least one of the first display area DA1, the second display area DA2, the third display area DA3 and the fourth display area DA 4.

After the number and types of display objects are obtained, the object analysis module 270 further classifies the importance of the content of the display objects. For example, in the present embodiment, the importance analysis step of the display object may include: the display object is classified according to a preset object importance lookup table obj_lut, for example, the importance of each of the display object OBJ1, the display object OBJ2 and the display object OBJ3 is set to be high, medium and low, but not limited thereto.

After the classification of the importance of the display object is completed, the brightness adjustment module 280 adjusts the brightness OBJ-BR of at least one of the first display device 111 and the second display device 112 in the display area of the display object according to the importance of the display object. In the present embodiment, the brightness adjustment module 280 may have different brightness adjustment ranges for the display areas of the display objects with different importance, for example: the brightness of the display area of the display object with high importance is increased by 10%, the brightness of the display area of the display object with medium importance is increased by 5%, and the brightness of the display area of the display object with low importance is reduced by 10%, but not limited thereto.

Fig. 9 is a block diagram of a process performed by the brightness adjustment module of fig. 2. Fig. 10A and 10B are schematic diagrams illustrating operations of the first display device and the second display device of fig. 1 under street lamp illumination. Referring to fig. 9, 10A and 10B, in the present embodiment, the brightness adjustment module 280 of the control unit 200 is further adapted to actively adjust the brightness of the display area focused by the user (e.g. the driver or the passenger) according to the viewing direction VD of the user (e.g. the driver or the passenger) acquired by the eye tracking module 150.

For example, the first image capturing element 151 of the eye tracking module 150 may be used to detect the viewing directions VD of both eyes of the driver DR. When the viewing direction VD of the driving DR falls on the instrument panel information DBIF (i.e., the display area of the first display device 111 displaying the instrument panel information DBIF is the gazing area GZDA), the luminance adjustment module 280 actively adjusts the luminance GZ-BR of the gazing area GZDA gazed by the driving DR on the first display device 111. The gaze area GZDA overlaps at least one of the first display area DA1, the second display area DA2, the third display area DA3, and the fourth display area DA 4. In the present embodiment, the brightness adjustment of the gaze area GZDA is, for example, to adjust the backlight brightness of the first backlight module BLU1 of the first display device 111 in the gaze area GZDA, but is not limited thereto.

It should be understood that the second image capturing element 152 of the eye tracking module 150 may also be used to detect the direction of the eyes of the passenger on the passenger's seat, and the brightness adjustment module 280 may be further adapted to adjust the brightness of the display area where the display device is focused according to the direction of the eyes of the passenger.

In particular, the first display device 111 and the second display device 112 in fig. 10A display at night, for example, and the traveling vehicle has street lamp illumination on one side of the second display device 112. Therefore, the first ambient light level detected by the first light sensor LSR1 is less than the second ambient light level detected by the second light sensor LSR 2. The brightness of each display area of the first display device 111 and the second display device 112 is sequentially from small to large, which is the first brightness BR1 of the first display area DA1, the second brightness BR2 of the second display area DA2, the third brightness BR3 of the third display area DA3, and the fourth brightness BR4 of the fourth display area DA 4.

By gradually reducing the backlight brightness of the first display device 111 and the second display device 112 toward the direction away from the street lamp, the driving DR is prevented from influencing the driving safety due to too bright screen in a dim environment. The brightness adjustment of each display area is also implemented based on the operation mode of the brightness distribution calculation module 230 shown in fig. 4, and the detailed description can be found in the previous relevant paragraphs, which are not repeated here.

In particular, in the present scenario, the brightness adjustment module 280 may adjust the brightness of the first display device 111 in the gazing area GZDA according to the brightness distribution after the brightness adjustment of the display device by the brightness distribution calculation module 230 according to the ambient light change. That is, brightness adjustment for different needs is stackable. For example, the brightness adjustment module 280 may increase the brightness of the gazing area GZDA gazed within the first display area DA1 by a predetermined increase (e.g. 10%) based on the brightness calculated by the brightness distribution calculation module 230 for the first display area DA1, so as to optimize the display effect of the dashboard information DBIF in the dim environment.

FIG. 11 is a block diagram illustrating a process performed by the head up displays and the luminance distribution calculation module of FIG. 2. Fig. 12 is a schematic diagram of the operation of the multiple heads-up display of fig. 1 under street lamp illumination. Referring to fig. 11 and 12, the dimming method for the first display device 111 and the second display device 112 can also be applied to a head-up display. That is, the brightness distribution calculating module 230 can also calculate the brightness of each display area of the plurality of head-up displays at the same display gray level (i.e. the second display gray level) according to the first ambient light level EVB1 and the second ambient light level EVB2 detected by the first light sensor LSR1 and the second light sensor LSR 2. When the first ambient light level EVB1 is different from the second ambient light level EVB2, the brightness of the respective display areas of these heads-up displays are different from each other.

For example, the first head up display 121, the second head up display 122 and the third head up display 123 in fig. 12 are displayed at night, and the traveling vehicle has street lamp illumination on the side far from the first head up display 121. Therefore, the first ambient light level EVB1 detected by the first light sensor LSR1 is smaller than the second ambient light level EVB2 detected by the second light sensor LSR 2. The brightness of the first display area HDA1 of the first head-up display 121, the brightness of the second display area HDA2 of the second head-up display 122, and the brightness of the third display area HDA3 of the third head-up display 123 are sequentially, from small to large, the first brightness HBR1 of the first display area HDA1, the second brightness HBR2 of the second display area HDA2, and the third brightness HBR3 of the third display area HDA 3.

By gradually reducing the display brightness of the first display area HDA1, the second display area HDA2 of the second head-up display 122, and the third head-up display 123 in a direction away from the street lamp, the driving DR is prevented from influencing the driving safety due to too bright screen in a dim environment. The brightness adjustment of each display area (as shown in fig. 11) is also implemented based on the operation mode of the brightness distribution calculation module 230 shown in fig. 4, and the detailed description can be found in the related paragraphs, which are not repeated here.

In particular, in the present embodiment, the first head-up display 121, the second head-up display 122 and the third head-up display 123 may display the image information IM1 such as the guiding index (e.g. the right turn indication shown in fig. 12) in a spliced manner along the arrangement direction, but is not limited thereto. In other usage scenarios, the heads-up displays may also display different image information independently.

FIG. 13 is a block diagram illustrating a process of operating the image adjustment module of FIG. 2. Fig. 14 is a side view of the head-up display of fig. 2 when the image adjustment module is in operation. Referring to fig. 12 and 13, in the present embodiment, the control unit 200 may further optionally include an image adjustment module 290 adapted to adjust the display positions of the image information IM1 of the first head-up display 121, the second head-up display 122 and the third head-up display 123 on the perspective window WD according to the binocular positions obtained by the eye tracking module 150 for the user (e.g. driving DR). Therefore, the image information IM1 (such as the guide index) can be properly fused in the live-action scene, which is beneficial to improving the immersive visual experience of the user.

Referring to fig. 13 and 14, from another point of view, the adjustment mechanism of the image adjustment module 290 is suitable for driving with different heights. More specifically, when the same vehicle is operated by driving with different heights, the image adjustment module 290 can be utilized to display the image information on the head-up display at the corresponding position.

For example, when the vehicle is operated by the driver DR with a higher height, the image adjustment module 290 displays the image information IM1 on the perspective window WD at the first position overlapping the road surface according to the height of the EYEs EYE. When the vehicle is changed to operate by the driver DR2 with a shorter height, the image adjustment module 290 also displays the image information IM1a at the second position on the perspective window WD that can overlap the road surface according to the height of the EYEs EYE 2. Because the driving DR2 is shorter, the second position of the image information IM1a displayed on the window WD is lower than the first position of the image information IM1 displayed on the window WD.

FIG. 15 is a block diagram illustrating a process performed by the transparent display and the luminance distribution calculation module of FIG. 2. Fig. 16 is a schematic diagram of the operation of the transparent display of fig. 1 under street lamp illumination. Referring to fig. 15 and 16, the dimming method for the first display device 111 and the second display device 112 can also be applied to the transparent display 130. That is, the brightness distribution calculating module 230 can also calculate the brightness of different display areas of the transparent display 130 under the same display gray scale (i.e. the second display gray scale) according to the first ambient light level EVB1 and the second ambient light level EVB2 detected by the first light sensor LSR1 and the second light sensor LSR 2. When the first ambient light level EVB1 is different from the second ambient light level EVB2, the display brightness of the different display areas of the transparent display 130 is different from each other. In the present embodiment, the transparent display 130 may have a first transparent display area TDA1 and a second transparent display area TDA2 aligned along the alignment direction AD.

For example, the transparent display 130 in fig. 16 is for example displaying at night, and the traveling vehicle has street light illumination on the side near the transparent display 130. Therefore, the first ambient light level EVB1 detected by the first light sensor LSR1 is greater than the second ambient light level EVB2 detected by the second light sensor LSR 2. Accordingly, the brightness distribution calculating module 230 calculates a first display brightness TBR1 for the first transparent display area TDA1 of the transparent display 130 to be larger than a second display brightness TBR2 for the second transparent display area TDA 2.

By gradually reducing the display brightness of the transparent display 130 toward the direction away from the street lamp, driving in a dim environment can be prevented from influencing driving safety due to too bright screen. Here, the brightness adjustment of the different transparent display areas of the transparent display 130 (as shown in fig. 15) is also implemented based on the operation mode of the brightness distribution calculation module 230 shown in fig. 4, and the detailed description can be found in the previous relevant paragraphs, which are not repeated here.

Fig. 17 is a schematic diagram of a cockpit display system according to another embodiment of the present invention. Referring to fig. 17, the main differences between the cockpit display system 100A of the present embodiment and the cockpit display system 100 of fig. 1 are that: the setting positions of the light sensors are different. Specifically, in the present embodiment, the light sensor may be disposed on a projection light machine of the head-up display. For example, the first projection light machine 121P and the third projection light machine 123P are respectively provided with a first light sensor LSR1-A and a second light sensor LSR2-A.

Since the operation of the first and second photo sensors LSR1-a and LSR2-a of the present embodiment is similar to that of the first and second photo sensors LSR1 and LSR2 of fig. 1, please refer to the related paragraphs of the foregoing embodiments for detailed description, and the detailed description is omitted here. However, the present invention is not limited thereto. In other embodiments, not shown, the transparent display 130 may also be provided with a photo sensor to meet the adjustment requirement of the transparent display 130 on the display brightness distribution.

It is particularly noted that in the present embodiment, the cockpit display system 100A further includes a third light sensor LSR3-a disposed on the second projection light engine 122P. For example, the first, third and second photo sensors LSR1-A, LSR3-A and LSR2-A are adapted to detect the ambient light levels in the left front, middle front and right front of the cabin CP, respectively. The control unit can select and execute a specific algorithm to actively adjust the brightness of the display screen according to the ambient light brightness obtained by the three light sensors. The algorithm mentioned here is, for example, the correction module 210 and the brightness distribution calculation module 230 included in the control unit 200 in the foregoing embodiment, and the detailed description is referred to in the relevant paragraphs of the foregoing embodiment, and is not repeated here.

In summary, in the cockpit display system according to an embodiment of the invention, the first light sensor disposed at the first display device side and the second light sensor disposed at the second display device side are adapted to detect the ambient light level in real time. The brightness distribution calculation module can calculate a plurality of brightnesses of a plurality of display areas of the first display device and the second display device under the same display gray scale according to the first ambient light brightness and the second ambient light brightness detected by the two light sensors. The brightness relationship of the display areas can be changed according to the brightness relationship of the first ambient light brightness and the second ambient light brightness, so that the display quality of the cabin display system under different ambient light sources can be effectively improved, and the visual experience of a user can be further optimized.

Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A cockpit display system comprising:

A cabin;

the first display device and the second display device are arranged in the cabin side by side along an arrangement direction, the first display device is provided with a first display area and a second display area, the second display device is provided with a third display area and a fourth display area, the second display area is positioned between the first display area and the third display area, and the third display area is positioned between the second display area and the fourth display area;

a first light sensor and a second light sensor arranged along the arrangement direction and adapted to detect a first ambient light level and a second ambient light level, respectively; and

the brightness distribution calculation module is suitable for calculating a first brightness, a second brightness, a third brightness and a fourth brightness of the first display area, the second display area, the third display area and the fourth display area respectively under the same first display gray scale according to the first ambient light brightness and the second ambient light brightness, wherein when the first ambient light brightness is different from the second ambient light brightness, the first brightness, the second brightness, the third brightness and the fourth brightness are different from each other.

2. The cabin display system of claim 1 wherein the first display device comprises a first backlight module and a first non-self-luminous display panel that are disposed to overlap each other, the second display device comprises a second backlight module and a second non-self-luminous display panel that are disposed to overlap each other, and the brightness distribution calculation module is adapted to calculate a first backlight brightness and a second backlight brightness of the first backlight module in the first display area and the second display area, respectively, and a third backlight brightness and a fourth backlight brightness of the second backlight module in the third display area and the fourth display area, respectively, according to the first ambient light brightness and the second ambient light brightness, so that the first backlight brightness, the second backlight brightness, the third backlight brightness and the fourth backlight brightness are different from each other.

3. The cockpit display system of claim 1 wherein the luminance distribution calculation module is further adapted to rank the first ambient light level and the second ambient light level according to a standard luminance.

4. A cockpit display system as in claim 3 further comprising:

the first light sensor and the second light sensor are also suitable for detecting an ambient light correction brightness, and the correction module is suitable for adjusting the standard brightness according to the ambient light correction brightness.

5. A cabin display system according to claim 3, wherein the step of classifying the first and second ambient light levels comprises determining that the first and second ambient light levels are each within a first, a second, or a third luminance range, the second luminance range having an ambient light level greater than the first and less than the third luminance range, and the standard luminance being within the second luminance range.

6. The cockpit display system of claim 5 wherein the brightness distribution calculation module calculates the first brightness, the second brightness, the third brightness and the fourth brightness based on a result of classifying the first ambient light brightness and the second ambient light brightness.

7. The cabin display system of claim 6 wherein the brightness distribution calculation module calculates the first brightness, the second brightness, the third brightness and the fourth brightness according to a third display setting brightness corresponding to the third brightness interval and a second display setting brightness corresponding to the second brightness interval or a first display setting brightness corresponding to the first brightness interval when the first ambient light brightness is in the third brightness interval and the second ambient light brightness is in the second brightness interval or the first brightness interval, the second brightness being greater than the third brightness and less than the first brightness, the fourth brightness being less than the third brightness.

8. The cockpit display system of claim 5 further comprising:

and the brightness interval adjusting module is suitable for adjusting the upper interval limit and the lower interval limit of the first brightness interval, the second brightness interval and the third brightness interval according to the setting of a user.

9. The cockpit display system of claim 8 wherein a first display setting corresponding to the first brightness interval, a second display setting corresponding to the second brightness interval, and a third display setting corresponding to the third brightness interval are adapted to be adjusted by the user.

10. The cockpit display system of claim 1 further comprising:

the object analysis module is suitable for analyzing the image signals of the first display device and the second display device to obtain the importance and the display area of a display object, wherein the display area of the display object is overlapped with at least one of the first display area, the second display area, the third display area and the fourth display area; and

and the brightness adjusting module is suitable for adjusting the brightness of at least one of the first display device and the second display device in the display area of the display object according to the importance of the display object.

11. The cockpit display system of claim 10 wherein the step of analyzing the importance of the display item includes: the display object is classified according to an object importance lookup table, and the brightness adjustment amplitude of the brightness adjustment module on the display area of the display object is changed according to the importance of the display object.

12. The cockpit display system of claim 1 further comprising:

the eyeball tracking module is arranged corresponding to a driver seat in the cabin and is suitable for detecting a sight line direction of a user on the driver seat; and

And the brightness adjustment module is suitable for increasing the brightness of a gazing area gazed by the user on the first display device or the second display device according to the sight line direction of the user, wherein the gazing area is overlapped with at least one of the first display area, the second display area, the third display area and the fourth display area.

13. The cockpit display system of claim 1 further comprising:

a plurality of head-up displays arranged in the cabin, the head-up displays are suitable for displaying image information on a perspective window of the cabin and are respectively provided with a display area,

the brightness distribution calculation module is further adapted to calculate the brightness of each of the plurality of display areas of the head-up display under the same second display gray level according to the first ambient light brightness and the second ambient light brightness, and when the first ambient light brightness is different from the second ambient light brightness, the brightness of each of the display areas is different from each other.

14. The cockpit display system of claim 13 further comprising:

the eyeball tracking module is arranged corresponding to a driver seat in the cabin and is suitable for detecting the positions of two eyes of a user on the driver seat; and

And the image adjusting module is suitable for adjusting the display positions of the image information of the head-up displays on the perspective window according to the two-eye positions of the user.

15. The cockpit display system of claim 13 wherein the heads-up displays display the image information in a tiled orientation along the alignment.

16. The cockpit display system of claim 1 further comprising:

a transparent display which is arranged to overlap a transparent window of the cabin and is provided with a first transparent display area and a second transparent display area which are arranged along the arrangement direction,

the brightness distribution calculation module is further adapted to calculate a first display brightness and a second display brightness of the transparent display in the same second display gray scale according to the first ambient light brightness and the second ambient light brightness, and when the first ambient light brightness is different from the second ambient light brightness, the first display brightness is different from the second display brightness.