CN117008346B - Display brightness control method and device, electronic equipment and storage medium - Google Patents

Display brightness control method and device, electronic equipment and storage medium Download PDF

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Publication number
CN117008346B
CN117008346B CN202311279363.9A CN202311279363A CN117008346B CN 117008346 B CN117008346 B CN 117008346B CN 202311279363 A CN202311279363 A CN 202311279363A CN 117008346 B CN117008346 B CN 117008346B
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display
brightness
compensation coefficient
determining
display content
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CN117008346A (en
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吕涛
白晓强
孙孝文
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Zejing Xi'an Automotive Electronics Co ltd
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Zejing Xi'an Automotive Electronics Co ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The embodiment of the disclosure relates to a control method and device for display brightness, electronic equipment and a computer readable storage medium, and relates to the technical field of display, wherein the method comprises the following steps: determining the reference brightness to be displayed by a head-up display system of a target object; determining a compensation coefficient of each display content in a plurality of display areas of the head-up display system according to the display content in the head-up display system and the flicker state of the display content; and determining the display brightness of each display content in each display area by combining the reference brightness and the compensation coefficient, and displaying the display content based on the display brightness. According to the embodiment of the disclosure, the brightness display effect of different display contents in the head-up display system can be improved.

Description

Display brightness control method and device, electronic equipment and storage medium
Technical Field
The disclosure relates to the technical field of display, and in particular relates to a control method and device of display brightness, electronic equipment and a computer readable storage medium.
Background
head-Up displays (HUDs) are a Display technology that projects information in the user's field of view, with the design of the head-Up Display area being intended to provide real-time information and to enable the user to maintain awareness and focus on the environment, which is typically located directly in front of the user, for quick line-of-sight transfer while the user is viewing the HUD and the environment at the same time. For example, HUDs may be used in vehicles, aircraft, helmets, etc. to present important information directly in front of the user's line of sight without diverting attention or reducing line of sight.
In the related art, different display contents in the head-up display system adopt backlights with the same brightness, no primary and secondary parts are adopted, important or key information is not easy to capture, the contrast of the display brightness is low, and a blue background frame appears in a low-brightness environment. Therefore, a certain improvement space still exists for the brightness display effect of different display contents in the head-up display system.
Disclosure of Invention
An object of the present disclosure is to provide a method and apparatus for controlling display brightness, an electronic device, and a computer readable storage medium, so as to overcome, at least to some extent, the problem that brightness display effects of different display contents in a head-up display system are poor due to limitations and drawbacks of the related art.
Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.
According to a first aspect of the present disclosure, there is provided a control method of display brightness, including: determining the reference brightness to be displayed by a head-up display system of a target object; determining a compensation coefficient of each display content in a plurality of display areas of the head-up display system according to the display content in the head-up display system and the flicker state of the display content; and determining the display brightness of each display content in each display area by combining the reference brightness and the compensation coefficient, and displaying the display content based on the display brightness.
In an exemplary embodiment of the present disclosure, the determining a compensation coefficient of each display content in a plurality of display areas of the head-up display system according to the display content in the head-up display system and a flicker state of the display content includes: determining a brightness compensation coefficient of each display content according to the attribute characteristics of the display content corresponding to each display area in the head-up display system; and determining a flicker compensation coefficient according to the flicker state corresponding to the display content in each display area.
In one exemplary embodiment of the present disclosure, the plurality of display areas includes a first display area and a second display area; the determining the brightness compensation coefficient of each display content according to the attribute characteristics of the display content corresponding to each display area in the head-up display system comprises the following steps: in a first display area, combining the display content, and determining the brightness compensation coefficient according to the correlation between the brightness of the display content and the early warning distance; in a second display area, determining a brightness compensation coefficient of each display content according to the display content; wherein the brightness compensation coefficient is positively correlated with the importance degree of the display content.
In an exemplary embodiment of the disclosure, the determining the brightness compensation coefficient according to the correlation between the brightness of the display content and the pre-warning distance includes: determining a first brightness compensation coefficient according to the display content in response to the fact that the brightness of the display content is irrelevant to the early warning distance, and taking the first brightness compensation coefficient as the brightness compensation coefficient; and responding to the relation between the brightness of the display content and the early warning distance, and determining a second brightness compensation coefficient according to the maximum early warning distance of the display content, the current early warning distance and the maximum brightness compensation coefficient corresponding to the display content.
In an exemplary embodiment of the disclosure, the determining a flicker compensation coefficient according to a flicker state corresponding to the display content in each display area includes: and if the flicker state is that the display content needs to flicker, determining the flicker compensation coefficient of the display content according to the corresponding relation between the display content and the flicker compensation coefficient.
In an exemplary embodiment of the present disclosure, the determining, in combination with the reference luminance and the compensation coefficient, a display luminance of each display content in each of the display areas includes: determining the display brightness of a first display area with backlight and without flicker according to the reference brightness, the first brightness compensation coefficient and the second brightness compensation coefficient; and determining high brightness and low brightness of the first display area with backlight flickering according to the reference brightness, the first brightness compensation coefficient, the second brightness compensation coefficient and the flicker compensation coefficient, and taking the high brightness and the low brightness as the display brightness.
In one exemplary embodiment of the present disclosure, the flicker compensation coefficient includes a highest flicker compensation coefficient and a lowest flicker compensation coefficient; the determining high luminance and low luminance according to the reference luminance, the first luminance compensation coefficient, the second luminance compensation coefficient, and the flicker compensation coefficient includes: determining a high luminance according to the reference luminance, the first luminance compensation coefficient, the second luminance compensation coefficient, and the highest flicker compensation coefficient; and determining low brightness according to the reference brightness, the first brightness compensation coefficient, the second brightness compensation coefficient and the lowest flicker compensation coefficient.
In an exemplary embodiment of the present disclosure, the determining, in combination with the reference luminance and the compensation coefficient, a display luminance of each display content in each of the display areas includes: determining the display brightness of a second display area with backlight and without flicker according to the reference brightness and the brightness compensation coefficient of the second display area; and determining high brightness and low brightness of the second display area with backlight flickering according to the reference brightness, the brightness compensation coefficient of the second display area and the flicker compensation coefficient, and taking the high brightness and the low brightness as the display brightness.
In an exemplary embodiment of the present disclosure, the plurality of display areas further includes a third display area, and the determining the display brightness of each display content in the display areas in combination with the reference brightness and the compensation coefficient includes: determining the display brightness of a third display area with backlight and without flicker according to the reference brightness; and determining high brightness and low brightness of a third display area with backlight flickering according to the reference brightness and the flicker compensation coefficient of the third display area, and taking the high brightness and the low brightness as the display brightness.
In an exemplary embodiment of the present disclosure, a minimum value of the display brightness of the first display area is greater than a maximum value of the display brightness of the second display area, and a minimum value of the display brightness of the second display area is greater than a maximum value of the display brightness of the third display area.
According to a second aspect of the present disclosure, there is provided a control apparatus for displaying luminance, comprising: the reference brightness determining module is used for determining the reference brightness required to be displayed by the head-up display system of the target object; the compensation coefficient determining module is used for determining the compensation coefficient of each display content in a plurality of display areas of the head-up display system according to the display content in the head-up display system and the flicker state of the display content; and the display brightness determining module is used for determining the display brightness of each display content in each display area by combining the reference brightness and the compensation coefficient, and displaying the display content based on the display brightness.
According to a third aspect of the present disclosure, there is provided an electronic device comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the method of any one of the above and possible implementations thereof via execution of the executable instructions.
According to a fourth aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any one of the above and possible implementations thereof.
According to the technical scheme provided by the embodiment of the disclosure, on one hand, according to the display content in the head-up display system and the flicker state of the display content, the compensation coefficient of each display content in a plurality of display areas of the head-up display system is determined, and not only can the compensation coefficient of the display content be determined by combining the factors of the display content and the flicker state of the display content, so that the accuracy of the compensation coefficient is improved, but also different compensation coefficients can be matched for the display content with different importance degrees; on the other hand, the display brightness of each display content in each display area is determined by combining the reference brightness and the compensation coefficient, and the display content is displayed based on the display brightness, so that not only can the display content with different importance degrees in a head-up display system be distinguished through brightness change, but also the important display content can be improved in brightness by the compensation coefficient, thereby improving the brightness contrast in a low-brightness environment and avoiding the problem of background frames in the low-brightness environment; therefore, the brightness display effect of different display contents in the head-up display system is improved to a certain extent.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 schematically illustrates a flowchart of a method for controlling display brightness according to an embodiment of the disclosure.
Fig. 2 schematically illustrates a schematic diagram of display area division in a head-up display system in an embodiment of the present disclosure.
Fig. 3 schematically illustrates a schematic diagram of a display effect of a display area in a head-up display system in an embodiment of the present disclosure.
Fig. 4 schematically illustrates a flowchart of another method for controlling display brightness in an embodiment of the disclosure.
Fig. 5 schematically illustrates a flowchart of still another method for controlling display brightness in an embodiment of the disclosure.
Fig. 6 schematically shows a schematic diagram of a framework of a control system for displaying luminance in an embodiment of the present disclosure.
Fig. 7 schematically shows a block diagram of a control apparatus that displays luminance in an embodiment of the present disclosure.
Fig. 8 schematically illustrates a block diagram of an electronic device in an embodiment of the disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will recognize that the aspects of the present disclosure may be practiced with one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
The control method of the display brightness provided by the embodiment of the disclosure can be applied to a head-up display system or device on a vehicle, and can be specifically executed by a control unit, an image generation unit, a display unit and other related components on the vehicle. In addition, the control method of the display brightness provided by the embodiment of the disclosure can be also applied to head-up display systems or devices of related equipment such as airplanes, intelligent glasses and helmets.
Next, each step of the control method of display luminance will be specifically described with reference to fig. 1.
In step S110, a reference luminance to be displayed by the head-up display system of the target object is determined.
In the embodiment of the present disclosure, the target object may be a vehicle, an airplane, a ship, smart glasses, a helmet, a virtual reality device, or other related devices on which a head-up display system may be mounted, which is not specifically limited herein; correspondingly, the display contents in the head-up display systems of different target objects are displayed on different types of display screens. For example, when the target object is a vehicle, an airplane or a ship, the display content in the head-up display system mounted on the target object can be displayed on a windshield of the vehicle, the airplane or the ship; when the target object is the intelligent glasses and the helmet, the display content in the head-up display system carried by the target object can be displayed on the lenses of the intelligent glasses and the windscreen of the helmet. The reference brightness may be brightness required for the display content in the current head-up display system to achieve the basic display effect; the reference brightness of the head-up display system to be displayed currently can be calculated according to signals of a rainfall illumination sensor, wherein the rainfall illumination sensor is a photoelectric module which can be installed on a rearview mirror of a vehicle, captures illumination intensity of the external environment of the vehicle currently according to incident illumination and reflected infrared light flickering, and then determines the reference brightness of the head-up display system to be displayed currently according to the illumination intensity of the external environment. After the reference brightness is determined, a reference can be provided for the brightness increase of the subsequent display content, so that the problem that the basic display effect cannot be realized after the brightness of the display content is changed, and the user experience is influenced is avoided.
In step S120, a compensation coefficient for each display content in a plurality of display areas of the head-up display system is determined according to the display content in the head-up display system and the blinking state of the display content.
In the embodiment of the disclosure, in the head-up display system, there will generally be a plurality of display contents, and different display contents may provide different information for the user or the driver. By way of example, the display may be content related to advanced driving assistance systems (Advanced Driver Assistance Systems, ADAS), such as automatic emergency braking (Automatic Emergency Braking, AEB), front collision warning (Forward Collision Warning, FCW), lane departure warning (Lane Departure Warning, LDW), adaptive cruise (Adaptive Cruise Control, ACC), and the like; the display content can also be navigation-related content, such as a steering icon, a navigation residual distance, a next road opening residual distance, a navigation road name, a dangerous mark, a destination prompt and the like; the display content can also be the content related to basic information of the operation of target objects such as vehicles, airplanes and the like, such as vehicle speed, gear, oil consumption, endurance mileage and the like.
In the related art, when the head-up display system displays different display contents, the brightness backlight is uniform brightness, the different display contents are displayed with the same brightness, no primary and secondary parts exist, the user cannot capture key information, the contrast ratio of the display brightness of the different contents is low, and a blue background frame is easy to appear in a low-brightness environment. In order to further solve the above problems, in the embodiments of the present disclosure, according to the display content in the head-up display system and the flicker state of the display content, a compensation coefficient of each display content in a plurality of display areas of the head-up display system is determined, and further, the display brightness of different display contents is adjusted according to the compensation coefficient, so that the display contents with different importance degrees can be better distinguished through brightness, and a user can capture key information more easily.
In the embodiment of the disclosure, the flicker state may indicate whether the display content in the head-up display system needs to be subjected to flicker. In the head-up display system, in order to attract the attention of a user, important contents such as alarm information, emergency prompt, navigation instruction and the like are subjected to flashing reminding, for example, important contents such as front collision early warning, danger identification, vehicle speed and the like can be subjected to flashing reminding. The compensation coefficient may represent a coefficient by which the brightness of the display content is adjusted based on the reference brightness, and display contents of different importance degrees may correspond to different compensation coefficients, so that the display contents have primary and secondary scores.
In some embodiments, the compensation coefficients may include a luminance compensation coefficient and a flicker compensation coefficient; based on this, according to the display content in the head-up display system and the flicker state of the display content, the compensation coefficient of each display content in a plurality of display areas of the head-up display system is determined, specifically comprising the following steps: determining a brightness compensation coefficient of each display content according to the attribute characteristics of the display content corresponding to each display area in the head-up display system; and determining a flicker compensation coefficient according to the flicker state corresponding to the display content in each display area.
The attribute features may represent attribute information of contents represented by different display contents in the head-up display system, such as importance degree, priority information, early warning distance and other information, and according to the attribute information currently represented by different display contents, a brightness compensation coefficient corresponding to the current display content may be determined. The luminance compensation coefficient may represent a coefficient by which the luminance of the display content needs to be adjusted, and the flicker compensation coefficient may represent a coefficient by which the luminance of the display content that needs to be flickered needs to be adjusted when the display content is flickered.
In some embodiments, the plurality of display regions of the heads-up display system may include a first display region and a second display region, and in other embodiments, a third display region may be further included on the basis of the first display region and the second display region. Wherein, the display contents corresponding to different display areas and the priorities corresponding to the display contents are also different. Illustratively, referring to FIG. 2, the display User Interface (UI) area of the heads-up display system is divided into three sections: a low priority information display area, a high priority information display area, and a basic information display area. The high-priority information display area may correspond to a first display area, represent content related to an Advanced Driving Assistance System (ADAS), the low-priority information display area may correspond to a second display area, represent content related to navigation, and the basic information display area may correspond to a third display area, represent content related to basic information of operation of a target object. Different display contents correspond to different priorities, so that the display contents with different priorities can be displayed by different brightnesses, and the priorities corresponding to the first display area, the second display area and the third display area are reduced in sequence.
Further, determining a brightness compensation coefficient of each display content according to the attribute characteristics of the display content corresponding to each display area in the head-up display system, including: in the first display area, combining display content, and determining a brightness compensation coefficient according to the correlation between the brightness of the display content and the early warning distance; in the second display area, determining a brightness compensation coefficient of each display content according to the display content; wherein the brightness compensation coefficient is positively correlated with the importance level of the display content.
The pre-warning distance may represent a distance between the target object and the dangerous source or a distance deviating from a normal route, and may be, for example, a linear distance between the target object and the dangerous source, which is prompted by a front collision pre-warning (FCW) signal, or other related contents such as a linear distance between the target object and a lane, which is prompted by a lane departure pre-warning (LDW) signal. When the early warning distance is shorter, the brightness of the corresponding display content is higher, and when the early warning distance is longer, the brightness of the corresponding display content is lower. In addition, different display contents correspond to different brightness compensation coefficients, and the brightness compensation coefficients are positively correlated with the importance degrees of the display contents, and the higher the importance degree is, the larger the value of the brightness compensation coefficient corresponding to the display contents is, so that the higher the importance degree is, the higher the brightness of the display contents is.
In some embodiments, in the first display area, in combination with the display content, and the correlation between the brightness of the display content and the pre-warning distance, a brightness compensation coefficient is determined, which specifically includes the following steps: responding to the fact that the brightness of the display content is irrelevant to the early warning distance, determining a first brightness compensation coefficient according to the display content, and taking the first brightness compensation coefficient as a brightness compensation coefficient; and responding to the relation between the brightness of the display content and the early warning distance, and determining a second brightness compensation coefficient according to the maximum early warning distance of the display content, the current early warning distance and the maximum brightness compensation coefficient corresponding to the display content.
Specifically, the first display area may correspond to a High priority information display area in the head-up display system, that is, a display area related to the ADAS, and the first display area may include display contents such as Automatic Emergency Braking (AEB), front Collision Warning (FCW), lane Departure Warning (LDW), and adaptive cruise (ACC), and different display contents correspond to different first luminance compensation coefficients, and in the first display area, the first luminance compensation coefficients may be represented by lev_high_dispcoeff (i), and as shown in reference to table 1, different first luminance compensation coefficients may be defined for each display content.
For the two display contents of the front collision warning and the lane departure warning, the relevant compensation coefficient of the brightness may be determined according to the magnitude of the warning distance thereof, the second brightness compensation coefficient determined based on the warning distance may be represented by lev_high_ DistanceCoeff (i), the maximum brightness compensation coefficient corresponding to the different display contents may be represented by dis_coff_max, and a different maximum brightness compensation coefficient may be defined for each display content, as shown in reference to table 2.
When the pre-warning Distance changes, the second brightness compensation coefficient lev_high_distance Coeff (i) is correspondingly adjusted, specifically, a difference value between the maximum pre-warning Distance that the display content can prompt and the pre-warning Distance that is currently displayed is calculated, a ratio of the difference value to the maximum pre-warning Distance that the display content can prompt is determined, then a product of the ratio and the maximum brightness compensation coefficient of the display content is added by 1, and the second brightness compensation coefficient is determined, as shown by referring to formula (1):
（1）
wherein dis_max (i) represents the maximum early warning distance at which the display content can be prompted, and dis (i) represents the currently displayed early warning distance.
Further, when the brightness of the display content is irrelevant to the pre-warning distance, the first brightness compensation coefficient corresponding to the display content can be used as the brightness compensation coefficient. When the brightness of the display content is related to the early warning distance, the brightness compensation coefficient can be determined jointly according to the first brightness compensation coefficient and the second brightness compensation coefficient corresponding to the display content.
In some embodiments, determining the flicker compensation coefficient according to the flicker state corresponding to the display content in each display area specifically includes the following steps: if the flicker state is the flicker, determining the flicker compensation coefficient of the display content according to the corresponding relation between the display content and the flicker compensation coefficient.
In particular, for different display contents in the head-up display system, because of different characterized content information and importance degrees, specific display contents can be flashed, so that users can more easily notice the information. For example, referring to the table 3, a different flicker compensation coefficient may be defined for each display content in the first display area. Wherein lev_high_flash flag (i) may represent a flag indicating whether the display content needs to flash, lev_high_ FlashCoeffMax (i) may represent a flash compensation coefficient corresponding to High brightness displayed when the display content flashes, and lev_high_ FlashCoeffMin (i) may represent a flash compensation coefficient corresponding to low brightness displayed when the display content flashes, because brightness may be changed between High brightness and low brightness when the display content flashes. In addition, the lev_high_ FlashCoeffMax (i) and lev_high_ FlashCoeffMin (i) can be adjusted according to the actual calibration effect of the target object, preferably, the higher the emergency degree corresponding to the display content is, the larger the brightness change is, the larger the coefficient value is, and the highest brightness cannot be dazzled, so that the influence on the driving safety is avoided. In addition, the flicker frequency may be set to be fixed at 1Hz, i.e. the luminance is changed every 500ms, changing between a 500ms high luminance and a 500ms low luminance.
Referring next to fig. 1, in step S130, the display luminance of each display content in each display area is determined in combination with the reference luminance and the compensation coefficient, and the display content is displayed based on the display luminance.
In the embodiment of the disclosure, although the reference brightness corresponding to different display contents is the same, the display brightness of the different display contents can be adjusted through the compensation coefficient, so that the display contents with different importance degrees are distinguished through the brightness.
In some embodiments, the method for determining the display brightness of each display content in each display area by combining the reference brightness and the compensation coefficient specifically comprises the following steps: determining display brightness of a first display area with backlight and without flicker according to the reference brightness, the first brightness compensation coefficient and the second brightness compensation coefficient; and determining high brightness and low brightness according to the reference brightness, the first brightness compensation coefficient, the second brightness compensation coefficient and the flicker compensation coefficient for the first display area with the backlight flickering, so that the high brightness and the low brightness are used as display brightness.
Specifically, referring to the settings of the compensation coefficients for different display contents in the first display area in tables 1 and 2, for the content in which there is backlight flicker in the first display area, the luminance corresponding to the display content in the first display area can be determined by the product between the reference luminance, the first luminance compensation coefficient, and the second luminance compensation coefficient, as shown in reference formula (2):
（2）
Wherein lev_high_bri_out put (i) represents the display brightness corresponding to the display content in the first display area.
In some embodiments, the flicker compensation coefficients include a highest flicker compensation coefficient and a lowest flicker compensation coefficient; determining high brightness and low brightness according to the reference brightness, the first brightness compensation coefficient, the second brightness compensation coefficient and the flicker compensation coefficient, and specifically comprising the following steps: determining high brightness according to the reference brightness, the first brightness compensation coefficient, the second brightness compensation coefficient and the highest flicker compensation coefficient; the low luminance is determined based on the reference luminance, the first luminance compensation coefficient, the second luminance compensation coefficient, and the lowest flicker compensation coefficient.
Referring to table 3, for display contents requiring flicker in the first display region, determination of high luminance and low luminance may be performed by the highest flicker compensation coefficient and the lowest flicker compensation coefficient, specifically, high luminance may be determined by a product among the reference luminance, the first luminance compensation coefficient, the second luminance compensation coefficient, and the highest flicker compensation coefficient, as shown in formula (3):
（3）
the low luminance can be determined by the product among the reference luminance, the first luminance compensation coefficient, the second luminance compensation coefficient, and the lowest flicker compensation coefficient, as shown in the reference formula (4):
（4）
After the high brightness and the low brightness are determined, the display content can be alternately displayed with the high brightness and the low brightness so as to achieve the display effect.
In some embodiments, the method for determining the display brightness of each display content in each display area by combining the reference brightness and the compensation coefficient specifically comprises the following steps: determining display brightness of a second display area with backlight and without flicker according to the reference brightness and the brightness compensation coefficient of the second display area; and determining high brightness and low brightness of the second display area with the backlight flickering according to the reference brightness, the brightness compensation coefficient of the second display area and the flickering compensation coefficient, and taking the high brightness and the low brightness as display brightness.
Specifically, the second display area may display low-priority display contents, such as a turning icon, a navigation remaining distance, a next route remaining distance, a navigation route name, a danger identifier, a destination prompt, and the like, where brightness compensation coefficients corresponding to the display contents are shown in table 4 below.
For display contents with or without backlight flicker in the second display area, specifically, the display luminance may be determined by the product of the reference luminance and the luminance compensation coefficient, as shown in reference formula (5):
（5）
For the display content with backlight flicker in the second display area, the high brightness and the low brightness can be determined by the reference brightness, the brightness compensation coefficient and the flicker compensation coefficient, and then the display content is subjected to flicker by the high brightness and the low brightness. Wherein the highest flicker compensation coefficient and the lowest compensation coefficient corresponding to different display contents in the second display area are shown in table 5 below.
Wherein the high luminance of the display content requiring flicker in the second display area is determined based on the highest flicker compensation coefficient, specifically, the high luminance can be determined by the product between the reference luminance, the luminance compensation coefficient, and the highest flicker compensation coefficient, as shown in the reference formula (6):
（6）
the low luminance of the display content requiring flicker in the second display area is determined based on the lowest flicker compensation coefficient, specifically, the low luminance may be determined by the product between the reference luminance, the luminance compensation coefficient, and the lowest flicker compensation coefficient, as shown in the expression (7) with reference to:
（7）
in some embodiments, the plurality of display areas includes a third display area, and determining the display brightness of each display content in each display area in combination with the reference brightness and the compensation coefficient specifically includes the following steps: determining display brightness according to the reference brightness for the third display area with backlight and without flicker; and determining high brightness and low brightness of the third display area with backlight flickering according to the reference brightness and the flicker compensation coefficient of the third display area, and taking the high brightness and the low brightness as display brightness.
The third display area may correspond to the basic information display area, may display content related to basic information of the target object operation, such as a vehicle speed, a gear, oil consumption, a range, and the like, and the highest flicker compensation coefficient and the lowest flicker compensation coefficient corresponding to different display contents to be flicker in the third display area are shown in table 6, where the third display area may be judged according to a vehicle speed signal, and when the vehicle speed is greater than 120km/h, the head-up display system may prompt through brightness flicker, and may also judge according to a range signal, and when the range is less than 50km, the head-up display system prompts through brightness flicker.
Wherein when the display content in the third display area does not need to flash, the brightness of the display content can be represented by the reference brightness, i.e。
When the display content in the third display area needs to be blinking, the high luminance of the display content in the third display area that needs to be blinking is determined based on the highest flicker compensation coefficient, specifically, the high luminance can be determined by the product between the reference luminance and the highest flicker compensation coefficient, as shown in the expression (8):
（8）
the low luminance of the display content requiring flicker in the third display area is determined based on the lowest flicker compensation coefficient, and specifically, the high luminance can be determined by the product between the reference luminance and the lowest flicker compensation coefficient, as shown in the expression (9) with reference to:
（9）
In some embodiments, the plurality of display regions includes a first display region, a second display region, and a third display region, and since priorities are different between the different display regions, a minimum value of display brightness of the first display region may be set to be greater than a maximum value of display brightness of the second display region, and a minimum value of display brightness of the second display region may be set to be greater than a maximum value of display brightness of the third display region.
Specifically, the brightness of the display content in different display areas is displayed in a grading manner, so that the display areas with different priorities or importance degrees can be better distinguished by the user, and the use experience of the user is improved. And the contrast ratio of different display brightness can be improved through different brightness, so that a blue background frame is avoided under low brightness.
Fig. 3 schematically illustrates a schematic diagram of a display effect of a display area in a head-up display system in an embodiment of the present disclosure. As shown in the figure, three vehicles exist in the ADAS area, i.e. the first display area, and the head-up display system adjusts the brightness of the vehicle display according to the distance, so that the brightness of the three vehicles gradually becomes bright from far to near.
Fig. 4 schematically illustrates a flowchart of another method for controlling display brightness according to an embodiment of the disclosure, and referring to fig. 4, the method specifically includes the following steps:
In step S401, determining, according to a rainfall illumination sensor, a reference brightness to be displayed by a head-up display system of a target object;
in step S402, calculating a compensation coefficient of the display content of each region according to the reference brightness, the display content, the pre-warning distance and whether the display content flashes;
in step S403, the output luminance of each region is calculated according to the compensation coefficient;
in step S404, the brightness of each display area is output and controlled;
in step S405, it is determined whether the brightness in the display area is off, if yes, ending; if not, the process proceeds to step S401.
Fig. 5 schematically illustrates a flowchart of a method for controlling display brightness according to an embodiment of the disclosure, and referring to fig. 5, the method specifically includes the following steps:
in step S510, a reference brightness bri_base to be displayed by the head-up display system of the current target object is calculated according to the rainfall illumination sensor.
In step S520, according to the display content, the pre-warning distance, and whether flicker is required, the compensation coefficients corresponding to different display contents in each display area are determined, and according to the display content, the corresponding compensation coefficients are found in the compensation coefficient table.
In step S5201, it is determined whether there is information to be displayed in the high priority display area according to the ADAS signal (signal such as AEB, FCW, LDW, ACC) received by the head-up display system, and if yes, the process jumps to step S5202; if not, jumping to step S5206;
In step S5202, the area content display flag lev_high_display (i) =true, and each display content holds a display flag for luminance calculation of the following step S530, where TRUE indicates that there is a display content, and the backlight is turned on; FALSE indicates no display content, backlight is turned off;
in step S5203, the first luminance compensation coefficient lev_high_dispcoeff (i) is found according to the display content and the importance level, and the second luminance compensation coefficient lev_high_ DistanceCoeff (i) is calculated according to the pre-warning distance;
in step S5204, according to the display content, it is determined whether the display content in the display UI needs to be blinked for reminding, if yes, the step S5205 is skipped, and if not, the step S5208 is skipped;
in step S5205, the highest flicker compensation coefficient and the lowest flicker compensation coefficient corresponding to the display content to be flicker in the high-priority display area are searched;
in step S5206, the display flag setting clear lev_high_dispflag (i) =false;
in step S5207, by setting lev_high_dispoeff (i) =1 and lev_high_ DistanceCoeff (i) =1, the compensation coefficient of the display luminance is cleared, so that the adjustment of the compensation coefficient for the next round is not affected by the previous time;
In step S5208, it is determined whether the low-priority display area has information to be displayed according to the navigation signals (signals such as a steering icon, a navigation remaining distance, a next route opening remaining distance, a navigation route name, a danger identifier, a destination prompt, etc.) received by the head-up display system, and if yes, the step S5209 is skipped; if not, jumping to step S5213;
in step S5209, a Low-priority area content display Flag lev_low_dispflag (i) =true is set, and each display content stores a display Flag for the luminance calculation of the following step S530, wherein TRUE indicates that there is a display content, and the backlight is turned on; FALSE indicates no display content, backlight is turned off;
in step S5210, the brightness compensation coefficient lev_low_dispoeff (i) is searched according to the display content and the importance level;
in step S5211, according to the display content, it is determined whether the display content in the display UI requires a blinking reminder, if so, the process jumps to step S5212, and if not, the process jumps to step S5215;
in step S5212, the highest flicker compensation coefficient and the lowest flicker compensation coefficient corresponding to the display content to be flicker in the low-priority display area are searched;
in step S5213, the display flag setting clear lev_low_dispflag (i) =false;
In step S5214, by setting lev_low_dispoeff (i) =1 (1 represents no change in luminance), compensation coefficient removal of display luminance is performed, so that adjustment of the compensation coefficient for the next round is not affected by the previous time;
in step S5215, it is determined whether the basic information display area has information to be displayed according to the navigation signal (such as the vehicle speed, gear, fuel consumption, and endurance mileage) received by the head-up display system, if yes, the step S5216 is skipped, and if no, the step S5219 is skipped;
in step S5216, a display flag lev_general_display (i) =true for the content of the basic luminance display area is set, and each display content holds a display flag for luminance calculation in the following step S530, where TRUE indicates that there is a display content, backlight is on, FALSE indicates that there is no display content, and backlight is off;
in step S5217, it is determined whether or not the display content in the display UI requires a blinking reminder, if so, the process goes to step S5218, and if not, the process goes to step S5219.
In step S5218, the highest flicker compensation coefficient and the lowest flicker compensation coefficient corresponding to the display content to be flicker in the basic information display area are searched;
In step S5219, the display flag setting clear lev_general_display (i) =false.
In step S530, the output brightness of each display area is calculated according to the compensation coefficient, and the lowest compensation coefficient corresponding to the high priority display area is larger than the highest compensation coefficient of the low priority display area; the lowest compensation coefficient of the low priority display area is larger than the highest compensation coefficient of the basic information display area.
In step S540, the brightness of each module is output-controlled based on the brightness calculated in step S530.
In step S550, a display brightness shutdown check is performed, and if the brightness is shutdown, the process is ended; if the brightness is not off, the process goes to step S510, where the reference brightness is calculated in real time according to the rainfall illumination sensor, and the calculation is performed with a period of 10 ms.
According to the control method for the display brightness, which is provided by the embodiment, the reference brightness required by the current target object is calculated according to the rainfall illumination sensor, and then the brightness compensation coefficient is searched according to the display content to control the brightness of different display areas of the HUD in real time, so that the control of the display brightness of the HUD is finer, the contrast of the display brightness is higher, and the user experience is better; in addition, the display contents of different areas are displayed by adopting different brightnesses, the brightness of the HUD is regulated according to the priority level of the display contents, the early warning distance and the brightness flicker reminding, and important emergency information is timely transmitted to a driver through brightness change, so that driving safety is facilitated, and user experience is improved.
According to the technical scheme provided by the embodiment of the disclosure, on one hand, according to the display content in the head-up display system and the flicker state of the display content, the compensation coefficient of each display content in a plurality of display areas of the head-up display system is determined, and not only can the compensation coefficient of the display content be determined by combining the factors of the display content and the flicker state of the display content, so that the accuracy of the compensation coefficient is improved, but also different compensation coefficients can be matched for the display content with different importance degrees; on the other hand, the display brightness of each display content in each display area is determined by combining the reference brightness and the compensation coefficient, and the display content is displayed based on the display brightness, so that not only can the display content with different importance degrees in a head-up display system be distinguished through brightness change, but also the important display content can be improved in brightness by the compensation coefficient, thereby improving the brightness contrast in a low-brightness environment and avoiding the problem of background frames in the low-brightness environment; therefore, the brightness display effect of different display contents in the head-up display system is improved to a certain extent.
In the embodiment of the disclosure, a control system for displaying brightness is also provided, and fig. 6 schematically shows a schematic diagram of a framework of the control system for displaying brightness in the embodiment of the disclosure. Specifically, a System On Chip (SOC) may generate an image and a regional dimming parameter according to a signal obtained by the rainfall illumination sensor, and send the parameter and image information to a head-up display System through a decoder, where the head-up display System displays image content through a display screen, and the head-up display System controls backlight brightness based on the regional dimming parameter by driving a backlight IC.
Next, in an embodiment of the present disclosure, there is also provided a control device for display luminance, referring to fig. 7, a control device 700 for display luminance mainly includes:
a reference brightness determining module 701, configured to determine a reference brightness that needs to be displayed by a head-up display system of a target object;
a compensation coefficient determining module 702, configured to determine a compensation coefficient of each display content in a plurality of display areas of the head-up display system according to the display content in the head-up display system and a flicker state of the display content;
a display brightness determining module 703, configured to determine a display brightness of each display content in each display area by combining the reference brightness and the compensation coefficient, and display the display content based on the display brightness.
In one exemplary embodiment of the present disclosure, the compensation coefficient determination module includes: the brightness compensation coefficient determining module is used for determining the brightness compensation coefficient of each display content according to the attribute characteristics of the display content corresponding to each display area in the head-up display system; and the flicker compensation coefficient determining module is used for determining a flicker compensation coefficient according to the flicker state corresponding to the display content in each display area.
In an exemplary embodiment of the present disclosure, the plurality of display regions includes a first display region and a second display region, and the luminance compensation coefficient determination module includes: the first area brightness compensation coefficient determining module is used for determining the brightness compensation coefficient by combining the display content and the correlation between the brightness of the display content and the early warning distance in a first display area; a second area brightness compensation coefficient determining module, configured to determine, in a second display area, a brightness compensation coefficient of each display content according to the display content; wherein the brightness compensation coefficient is positively correlated with the importance degree of the display content.
In one exemplary embodiment of the present disclosure, the first region luminance compensation coefficient determination module is configured to: determining a first brightness compensation coefficient according to the display content in response to the fact that the brightness of the display content is irrelevant to the early warning distance, and taking the first brightness compensation coefficient as the brightness compensation coefficient; and responding to the relation between the brightness of the display content and the early warning distance, and determining a second brightness compensation coefficient according to the maximum early warning distance of the display content, the current early warning distance and the maximum brightness compensation coefficient corresponding to the display content.
In one exemplary embodiment of the present disclosure, the flicker compensation coefficient determination module is configured to: and if the flicker state is that the display content needs to flicker, determining the flicker compensation coefficient of the display content according to the corresponding relation between the display content and the flicker compensation coefficient.
In one exemplary embodiment of the present disclosure, the display brightness determining module includes: the flicker-free display brightness determining module is used for determining the display brightness of a first display area with backlight and without flicker according to the reference brightness, the first brightness compensation coefficient and the second brightness compensation coefficient; and the flicker display brightness determining module is used for determining high brightness and low brightness of a first display area with backlight flicker according to the reference brightness, the first brightness compensation coefficient, the second brightness compensation coefficient and the flicker compensation coefficient, so that the high brightness and the low brightness are used as the display brightness.
In one exemplary embodiment of the present disclosure, the flicker compensation coefficient includes a highest flicker compensation coefficient and a lowest flicker compensation coefficient, and the flicker display luminance determination module is configured to: determining a high luminance according to the reference luminance, the first luminance compensation coefficient, the second luminance compensation coefficient, and the highest flicker compensation coefficient; and determining low brightness according to the reference brightness, the first brightness compensation coefficient, the second brightness compensation coefficient and the lowest flicker compensation coefficient.
In an exemplary embodiment of the present disclosure, the display brightness determining module further includes: a second region display luminance determination module configured to: determining the display brightness of a second display area with backlight and without flicker according to the reference brightness and the brightness compensation coefficient of the second display area; and determining high brightness and low brightness of the second display area with backlight flickering according to the reference brightness, the brightness compensation coefficient of the second display area and the flicker compensation coefficient, and taking the high brightness and the low brightness as the display brightness.
In an exemplary embodiment of the present disclosure, the plurality of display regions further includes a third display region, and the display brightness determining module further includes: a third region display luminance determining module configured to: determining the display brightness of a third display area with backlight and without flicker according to the reference brightness; and determining high brightness and low brightness of a third display area with backlight flickering according to the reference brightness and the flicker compensation coefficient of the third display area, and taking the high brightness and the low brightness as the display brightness.
In an exemplary embodiment of the present disclosure, the control device for displaying luminance is further configured to: the minimum value of the display brightness of the first display area is larger than the maximum value of the display brightness of the second display area, and the minimum value of the display brightness of the second display area is larger than the maximum value of the display brightness of the third display area.
It should be noted that, the specific details of each part in the above-mentioned control device for display brightness and the control system for display brightness are already described in detail in the embodiment of the control method part for display brightness, and the details not disclosed can be referred to the embodiment of the method part, so that the details are not described again.
In an exemplary embodiment of the present disclosure, an electronic device capable of implementing the above method is also provided.
Those skilled in the art will appreciate that the various aspects of the present disclosure may be implemented as a system, method, or program product. Accordingly, various aspects of the disclosure may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.
An electronic device 800 according to such an embodiment of the present disclosure is described below with reference to fig. 8. The electronic device 800 shown in fig. 8 is merely an example and should not be construed to limit the functionality and scope of use of embodiments of the present disclosure in any way.
As shown in fig. 8, the electronic device 800 is embodied in the form of a general purpose computing device. Components of electronic device 800 may include, but are not limited to: the at least one processing unit 810, the at least one storage unit 820, a bus 830 connecting the different system components (including the storage unit 820 and the processing unit 810), and a display unit 840.
Wherein the storage unit stores program code that is executable by the processing unit 810 such that the processing unit 810 performs steps according to various exemplary embodiments of the present disclosure described in the above section of the present specification. For example, the processing unit 810 may perform the steps as shown in fig. 1.
The storage unit 820 may include readable media in the form of volatile storage units, such as Random Access Memory (RAM) 8201 and/or cache memory 8202, and may further include Read Only Memory (ROM) 8203.
Storage unit 820 may also include a program/utility 8204 having a set (at least one) of program modules 8205, such program modules 8205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Bus 830 may be one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 800 may also communicate with one or more external devices 900 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 800, and/or any device (e.g., router, modem, etc.) that enables the electronic device 800 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 850. Also, electronic device 800 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 860. As shown, network adapter 860 communicates with other modules of electronic device 800 over bus 830. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 800, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or an electronic device, etc.) to perform the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, a computer-readable storage medium having stored thereon a program product capable of implementing the method described above in the present specification is also provided. In some possible implementations, various aspects of the disclosure may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the disclosure as described in the "exemplary methods" section of this specification, when the program product is run on the terminal device.
A program product for implementing the above-described method according to an embodiment of the present disclosure may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
Furthermore, the above-described figures are only schematic illustrations of processes included in the method according to the exemplary embodiments of the present disclosure, and are not intended to be limiting. It will be readily appreciated that the processes shown in the above figures do not indicate or limit the temporal order of these processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, for example, among a plurality of modules.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (13)

1. A method for controlling display brightness, comprising:
Determining the reference brightness to be displayed by a head-up display system of a target object;
determining a compensation coefficient of each display content in a plurality of display areas of the head-up display system according to the display content in the head-up display system and the flicker state of the display content, wherein the display content comprises content related to basic information of an advanced driving assistance system, navigation and operation, and the compensation coefficient comprises a brightness compensation coefficient and a flicker compensation coefficient;
and determining the display brightness of each display content in each display area by combining the reference brightness and the compensation coefficient, and displaying the display content based on the display brightness.
2. The method according to claim 1, wherein the determining a compensation coefficient for each of a plurality of display areas of the head-up display system based on the display content in the head-up display system and a flicker state of the display content comprises:
determining a brightness compensation coefficient of each display content according to the attribute characteristics of the display content corresponding to each display area in the head-up display system;
and determining a flicker compensation coefficient according to the flicker state corresponding to the display content in each display area.
3. The method of controlling display luminance according to claim 2, wherein the plurality of display areas includes a first display area and a second display area; the determining the brightness compensation coefficient of each display content according to the attribute characteristics of the display content corresponding to each display area in the head-up display system comprises the following steps:
in a first display area, combining the display content, and determining the brightness compensation coefficient according to the correlation between the brightness of the display content and the early warning distance;
in a second display area, determining a brightness compensation coefficient of each display content according to the display content;
wherein the brightness compensation coefficient is positively correlated with the importance degree of the display content.
4. The method of claim 3, wherein the determining the brightness compensation coefficient in combination with the display content and the correlation between the brightness of the display content and the pre-warning distance comprises:
determining a first brightness compensation coefficient according to the display content in response to the fact that the brightness of the display content is irrelevant to the early warning distance, and taking the first brightness compensation coefficient as the brightness compensation coefficient;
And responding to the relation between the brightness of the display content and the early warning distance, and determining a second brightness compensation coefficient according to the maximum early warning distance of the display content, the current early warning distance and the maximum brightness compensation coefficient corresponding to the display content.
5. The method according to claim 2, wherein determining a flicker compensation coefficient according to a flicker state corresponding to the display content in each of the display regions comprises:
and if the flicker state is that the display content needs to flicker, determining the flicker compensation coefficient of the display content according to the corresponding relation between the display content and the flicker compensation coefficient.
6. The method according to claim 4, wherein the determining the display luminance of each display content in each display area by combining the reference luminance and the compensation coefficient includes:
determining the display brightness of a first display area with backlight and without flicker according to the reference brightness, the first brightness compensation coefficient and the second brightness compensation coefficient;
and determining high brightness and low brightness of the first display area with backlight flickering according to the reference brightness, the first brightness compensation coefficient, the second brightness compensation coefficient and the flicker compensation coefficient, and taking the high brightness and the low brightness as the display brightness.
7. The method according to claim 6, wherein the flicker compensation coefficient includes a highest flicker compensation coefficient and a lowest flicker compensation coefficient; the determining high luminance and low luminance according to the reference luminance, the first luminance compensation coefficient, the second luminance compensation coefficient, and the flicker compensation coefficient includes:
determining a high luminance according to the reference luminance, the first luminance compensation coefficient, the second luminance compensation coefficient, and the highest flicker compensation coefficient;
and determining low brightness according to the reference brightness, the first brightness compensation coefficient, the second brightness compensation coefficient and the lowest flicker compensation coefficient.
8. A control method of display luminance according to claim 3, wherein said determining the display luminance of each display content in each of the display areas in combination with the reference luminance and the compensation coefficient includes:
determining the display brightness of a second display area with backlight and without flicker according to the reference brightness and the brightness compensation coefficient of the second display area;
and determining high brightness and low brightness of the second display area with backlight flickering according to the reference brightness, the brightness compensation coefficient of the second display area and the flicker compensation coefficient, and taking the high brightness and the low brightness as the display brightness.
9. The method of controlling display luminance according to claim 3, wherein the plurality of display areas further includes a third display area, and wherein the determining the display luminance of each display content in each display area by combining the reference luminance and the compensation coefficient includes:
determining the display brightness of a third display area with backlight and without flicker according to the reference brightness;
and determining high brightness and low brightness of a third display area with backlight flickering according to the reference brightness and the flicker compensation coefficient of the third display area, and taking the high brightness and the low brightness as the display brightness.
10. The method according to claim 9, wherein a minimum value of the display luminance of the first display region is larger than a maximum value of the display luminance of the second display region, and wherein a minimum value of the display luminance of the second display region is larger than a maximum value of the display luminance of the third display region.
11. A display luminance control apparatus, comprising:
the reference brightness determining module is used for determining the reference brightness required to be displayed by the head-up display system of the target object;
The compensation coefficient determining module is used for determining the compensation coefficient of each display content in a plurality of display areas of the head-up display system according to the display content in the head-up display system and the flicker state of the display content, wherein the display content comprises content related to basic information of an advanced driving assistance system, navigation and operation, and the compensation coefficient comprises a brightness compensation coefficient and a flicker compensation coefficient;
and the display brightness determining module is used for determining the display brightness of each display content in each display area by combining the reference brightness and the compensation coefficient, and displaying the display content based on the display brightness.
12. An electronic device, comprising:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the method of controlling display brightness of any one of claims 1-10 via execution of the executable instructions.
13. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the method of controlling display brightness according to any one of claims 1-10.
CN202311279363.9A 2023-10-07 2023-10-07 Display brightness control method and device, electronic equipment and storage medium Active CN117008346B (en)

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