WO2022116663A1 - 显示器背光亮度的调整方法和装置 - Google Patents

显示器背光亮度的调整方法和装置 Download PDF

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Publication number
WO2022116663A1
WO2022116663A1 PCT/CN2021/121463 CN2021121463W WO2022116663A1 WO 2022116663 A1 WO2022116663 A1 WO 2022116663A1 CN 2021121463 W CN2021121463 W CN 2021121463W WO 2022116663 A1 WO2022116663 A1 WO 2022116663A1
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Prior art keywords
display
control signal
illuminance
signal
displays
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PCT/CN2021/121463
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English (en)
French (fr)
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史朋辉
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北京罗克维尔斯科技有限公司
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Publication of WO2022116663A1 publication Critical patent/WO2022116663A1/zh

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    • 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
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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

Definitions

  • the present application relates to the technical field of display output, and in particular, to a method and device for adjusting backlight brightness of multiple display screens.
  • the driver and occupant When using the vehicle, the driver and occupant will observe the output information of each display according to their own needs, road conditions and the current display content of the vehicle display; for example, the driver may need to check the speed, gear, power system status, fuel status by watching the instrument display. and other information, you need to view the central control display to obtain the navigation map, the image information captured by the rear-view camera, or the image of the virtual control button.
  • the photopic cells of the human eye will adjust their adaptability to light according to the ambient light intensity; specifically, when the external light intensity is high, the visual sensitivity is reduced; when the external light intensity is low , to improve visual acuity. Therefore, under different ambient light conditions, human eyes have different visual perceptions when observing the brightness of the same display; in the case of strong ambient light, the display brightness may not be seen; and in the case of weak ambient light brightness , you may feel that the display is too bright.
  • the display can be made to adjust the backlight brightness adaptively according to the change of the ambient light intensity; the displays used in many vehicles are equipped with an illuminance sensor; the display can determine the ambient light intensity according to the output signal of the illuminance sensor, and according to The ambient light intensity automatically adjusts the backlight brightness.
  • multiple displays may be equipped with illuminance sensors to achieve self-adjustment of brightness.
  • the illumination sensors in different displays are irradiated by ambient light to different degrees, and the display brightness of each display is also different.
  • the sensitivity of human vision to changes in brightness drivers and passengers can clearly feel the difference in brightness of monitors when switching between different monitors, and the user experience is not good.
  • each display shows different display brightness states due to ambient light illumination, and the human eye will involuntarily adapt visually when viewing the display; and switching to watch different brightness displays caused by high-frequency vision
  • the adaptive adjustment causes the user's eyes to tire quickly.
  • the present application provides a method and device for adjusting the brightness of a display backlight.
  • the present application provides a method for adjusting the brightness of a display backlight, including:
  • the first display is a display configured with an illuminance sensor, and the illuminance signal is generated by the illuminance sensor;
  • the global control signal is used to control the backlight brightness of each of the first displays.
  • generating a global control signal according to the illuminance signal corresponding to each of the first displays including:
  • the global control signal is generated from each of the adaptive control signals.
  • generating the global control signal according to each of the adaptive control signals includes:
  • the maximum value or the minimum value of the adaptive control signal is selected, and the maximum value or the minimum value is used as the global control signal.
  • generating a corresponding adaptive control signal according to the illuminance signal corresponding to each of the first displays including:
  • the corresponding adaptive control signal is obtained according to each of the illuminance signals and the corresponding backlight brightness adjustment curve.
  • the corresponding backlight brightness adjustment curve including:
  • illuminance signal corresponding to each of the first displays a plurality of curve construction base points are respectively determined; the correspondence between the illuminance signal and the backlight brightness in each of the curve construction base points is known;
  • the corresponding relationship between the light intensity and the backlight brightness in each of the curve construction base points can be adjusted.
  • acquiring the illuminance signals corresponding to a plurality of first displays includes: periodically acquiring the illuminance signals corresponding to a plurality of the first displays;
  • Generating a global control signal according to the illuminance signal corresponding to each of the first displays includes: periodically generating the global control signal according to the illuminance signal corresponding to each of the first displays;
  • Using the global control signal to control the backlight brightness of each of the first displays includes:
  • the newly generated global control signal is used to control the backlight brightness of each of the first displays.
  • a second display is also included; the second display is a display without the illuminance sensor;
  • the method further includes controlling the backlight brightness of the second display using the global control signal.
  • the present application provides a device for adjusting the backlight brightness of a display, comprising:
  • an illuminance signal acquiring unit configured to acquire illuminance signals corresponding to a plurality of first displays;
  • the first display is a display configured with an illuminance sensor, and the illuminance signal is generated by the illuminance sensor;
  • control signal generating unit configured to generate a global control signal according to the illuminance signal corresponding to each of the first displays
  • a control unit configured to use the global control signal to control the backlight brightness of each of the first displays.
  • control signal generating unit includes:
  • an adaptive signal generating subunit configured to generate a corresponding adaptive control signal according to the illuminance signal corresponding to each of the first displays
  • the integrated signal generating subunit is configured to generate the global control signal according to each of the adaptive control signals.
  • the integrated signal generating subunit uses the weighted average value of the adaptive control signal as the global control signal; or,
  • the maximum value or the minimum value of the adaptive control signal is used as the global control signal.
  • the adaptive signal generating subunit generating the corresponding adaptive control signal according to the illuminance signal corresponding to each of the first displays includes:
  • the corresponding adaptive control signal is obtained according to each of the illuminance signals and the corresponding backlight brightness adjustment curve.
  • the illuminance signal obtaining unit periodically obtains a plurality of the illuminance signals corresponding to the first displays; the control signal generating unit calculates the global control signal according to the periodically obtained illuminance signals;
  • the control unit includes: a threshold determination subunit determines a difference threshold according to the global control signal being used;
  • the difference calculation unit calculates the difference between the newly generated global control signal and the currently used global control global control signal
  • Judging subunit judging whether the difference is less than the difference threshold
  • control subunit configured to control the background brightness of the first display to remain unchanged when the judgment unit judges that the difference is less than the difference threshold, or to control the difference to be not less than In the case of the difference threshold, the newly generated global control signal is used to control the backlight brightness of each of the first displays.
  • the present application provides a display system, including: a controller and a plurality of first displays;
  • Each of the first displays is a display configured with an illuminance sensor; the illuminance sensor is used to generate an illuminance signal;
  • the controller is configured to execute the aforementioned method for adjusting the backlight brightness of the display according to the received illuminance signal, so as to adjust the backlight brightness of each of the first displays.
  • the present application provides a vehicle, comprising the aforementioned display system; each first display in the display system is arranged at different positions in the vehicle cabin.
  • the method and device for adjusting the backlight brightness of a display provided by the present application generate a global control signal from the illuminance signals of a plurality of first displays, and use the global control signal to control the backlight brightness of each first display.
  • the backlight brightness of each of the first displays can be adjusted to be consistent. When switching to watch different first displays, the user will not feel the difference in brightness of the first display, and the user's eyes do not need to adjust the adaptive state.
  • FIG. 1 is a flowchart of a method for adjusting the brightness of a display backlight provided by an embodiment of the present application
  • FIG. 2 is a flowchart of a method for generating a global control signal provided by an embodiment of the present application
  • FIG. 3 is a flowchart of controlling the backlight brightness of a first display provided by an embodiment of the present application
  • FIG. 4 is a schematic structural diagram of an apparatus for adjusting the brightness of a display backlight provided by an embodiment of the present application
  • FIG. 5 is a schematic diagram of a controller provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a display system provided by an embodiment of the present application.
  • 11-illumination signal acquisition unit 12-control signal generation unit, 13-control unit; 21-processor, 22-memory, 23-communication interface, 24-bus system; 31-controller, 32-first display , 33-Second monitor.
  • Embodiments of the present application provide a method and device for adjusting the backlight brightness of a display, which are used to globally control the backlight brightness of multiple displays, so as to achieve consistency of the backlight brightness of multiple displays.
  • the backlight brightness refers to the brightness of the light output by the display when the pixels of the display are driven by the maximum grayscale signal.
  • the maximum grayscale driving signal corresponding to the RGB three-color is (255, 255, 255), and when (255, 255, 255) is used to drive a certain pixel area of the display, then this certain pixel
  • the brightness of the zone output is the backlight brightness.
  • the display is mostly an LCD display or an LED display (in some special applications, the display may also be a CRT display, and the meaning of the backlight brightness is not introduced here).
  • the following first introduces the working principles of the two types of displays, and then explains the specific meaning of the backlight brightness in the application of the two types of displays, in order to understand the meaning of the backlight brightness more clearly. .
  • the LCD display includes a backlight light source and a liquid crystal layer; when the LCD display is in use, after the incident light generated by the backlight light source irradiates the pixel points of the liquid crystal layer, it is modulated by the pixel points of the liquid crystal layer to form outgoing light of corresponding intensity; the output light corresponding to the plurality of pixel points Light strikes the human eye to form a displayed image.
  • the intensity of the backlight light source directly determines the intensity of the light emitted by the pixels of the liquid crystal layer, which also determines how the displayed image will be displayed on people. Brightness in the eyes.
  • the output power (ie, luminous power) of the backlight light source of the LCD display can be adjusted.
  • the adjustment of the output power of the backlight light source of the LCD display is the adjustment of the brightness of the backlight.
  • the LED display is provided with a self-luminous point with a smaller size at each pixel point, and the self-luminous point is used to emit light to form the outgoing light of the corresponding pixel point.
  • the driving signal drives each self-luminous point to emit light according to the corresponding luminous power, so that each pixel point generates outgoing light of corresponding intensity; the output light corresponding to the plurality of pixel points is irradiated to the human eye to form a display image.
  • the set maximum luminous power of the luminous point in the LED display can be adaptively adjusted according to the ambient illuminance.
  • the LED display does not have a backlight light source, its brightness adjustment is not to adjust the luminous intensity of the backlight light source; but in order to use the technical terminology of the LCD display application, the adjustment of the set maximum luminous power of the luminous point of the LED display is defined. For the adjustment of LED display backlight brightness.
  • FIG. 1 is a flowchart of a method for adjusting the brightness of a display backlight provided by an embodiment of the present application. As shown in FIG. 1 , the method for adjusting the brightness of the backlight provided by the embodiment of the present application includes steps S101-S103.
  • S101 Acquire illuminance signals of a plurality of first displays.
  • the first display is a display configured with an illuminance sensor.
  • An illuminance sensor is a sensor that detects the intensity of light irradiated on its surface and generates a corresponding illuminance signal.
  • the illuminance sensor is mostly installed near the light-emitting side of the display screen of the first display, or directly integrated in the display area of the first display. After the ambient light in the environment where the first display is located irradiates the illuminance sensor, the illuminance sensor generates a corresponding illuminance signal.
  • the number of the first displays is multiple.
  • the installation directions or the environmental characteristics of the installation positions of the first displays are not the same, and the ambient light intensity illuminating the first displays may be different, which makes the illuminance signals generated by the illuminance sensors corresponding to the first displays different.
  • the first displays are the instrument position display and the center console position display respectively.
  • the instrument position display is mostly set in the concave position on the front side of the steering wheel, and is surrounded by a workbench; under normal use, there is less ambient light on the instrument position display, and the illuminance signal generated by the illuminance sensor installed on the instrument position display side is relatively low. Small.
  • the central control position display is set between the main driver's seat and the passenger seat; because it is in a relatively open environment, the ambient light incident through each window glass may be irradiated on the central control position display, and the reading lights in the car are turned on.
  • the light formed at the time can also be irradiated on the center console display, so the illuminance signal generated by the illuminance sensor installed on the center console display side is larger than the illuminance signal generated by the illuminance sensor installed on the instrument display side.
  • S102 Generate a global control signal according to the illuminance signal corresponding to each first display.
  • the corresponding first display is adjusted according to the signal of each illuminance sensor; because each display is adjusted independently, there is a high probability that each first display will be caused by Display backlight brightness is not the same.
  • the backlight brightness adjustment method provided in the embodiment of the present application uniformly adjusts the backlight brightness of each first display; and the premise of uniformly adjusting the backlight brightness of each first display is to determine a control signal for uniform adjustment, that is, the control signal provided in step S102. and the global control signal.
  • the method for adjusting the backlight brightness periodically realizes the adjustment of the backlight brightness of the display; in order to prevent the user's photopic vision from being affected due to excessive adjustment frequency, the magnitude of the adjustment period is on the order of seconds.
  • the period in which the illuminance sensor generates an illuminance signal is on the order of milliseconds. Therefore, in one backlight brightness adjustment cycle, the illuminance sensor generates a large number of illuminance signals.
  • all the light intensity signals generated by the light intensity sensor in one backlight brightness adjustment period can be averaged to obtain an average value, and the average value can be used as the average value.
  • Illuminance signal for subsequent use It is conceivable that the average illuminance signal representing the backlight brightness adjustment period can be obtained by obtaining the average value, so that the illuminance signal of the user's subsequent steps is more in line with the actual use situation.
  • the adjustment period of the backlight brightness is 10s
  • the generation period of the ambient light sensor illuminance signal in each first display is 500ms, so in one backlight brightness adjustment period, 20 illuminance signals are generated; then 20 illuminance signals are obtained.
  • the average value of the illuminance signal is used for subsequent processing.
  • FIG. 2 is a flowchart of a method for generating a global control signal provided by an embodiment of the present application. As shown in FIG. 2, a method for generating a global control signal includes steps S1021 and S1022.
  • S1021 Generate a corresponding adaptive control signal according to the illuminance signal corresponding to each first display.
  • the adaptive control signal is originally a signal used to independently control the backlight brightness of each first display.
  • the embodiment of the present application according to the environmental scene conditions where the first displays at different positions are located, has its illumination signal and environment The correspondence between light intensities is not the same.
  • the backlight brightness of each first display will generally be at the same level.
  • the brightness interval is only the difference between the actual backlight brightness of each first display.
  • the actual detection range of the ambient light sensor in the instrument position display and the center console display is 0-10000 lux, and the backlight brightness adjustment range of both displays is 0-255.
  • the ambient light intensity of the central console display is 5000 lux
  • the ambient light intensity of the instrument display may only be around 1000 lux.
  • the backlight brightness corresponding to the central console display may be set to 186, and the backlight brightness corresponding to the instrument display may be set to 153.
  • the foregoing process of determining the adaptive control signal corresponding to each first display may be executed in the same processor, or may be executed in different processors. If the process of determining the adaptive control signal corresponding to each first display is performed in different processors, then the obtained adaptive control signal needs to be sent to one processor, and then the processor performs subsequent operation steps.
  • S1022 Generate a global control signal according to each adaptive control signal.
  • a certain processor After acquiring each adaptive control signal, a certain processor generates a global control signal according to each adaptive control signal.
  • the aforementioned three methods can all be configured in the processor, and the user selects the method for calculating the global control signal, or automatically selects the method for calculating the global control signal according to the characteristics of the ambient light intensity.
  • this embodiment of the present application also provides another method for calculating the global control signal, including steps 1023 and S1024.
  • S1023 Determine a global illuminance signal according to the illuminance signal corresponding to each first display.
  • the global illuminance signal is an illuminance signal representing the global environmental state of the plurality of first sensors.
  • the method of calculating the weighted average value can be used to determine the global illuminance signal, and the weighting coefficient corresponding to each display illuminance signal can be determined in advance.
  • S1024 Generate a global control control signal according to the global illumination signal.
  • the adaptive control signal may be determined according to a predetermined query method.
  • step of step S103 may be performed, so as to achieve uniform brightness of each first display.
  • S103 Use the global control signal to control the backlight brightness of each first display.
  • the global control signal is then sent to each first display, so that each first display adjusts corresponding hardware operating parameters according to the global control signal, so that the backlight brightness of each display is adjusted to be consistent.
  • adjusting the corresponding hardware operating parameters according to the global control signal is adjusting the luminous power of the backlight light source of the LCD display; when the first display is an LED display, adjusting the corresponding hardware according to the global control signal
  • the working parameter is to adjust the available maximum luminous power of the luminous point of each pixel.
  • each first display has been uniformly calibrated; the process of standardized calibration establishes the hardware under each backlight brightness of the display. Device working parameters, and establish a one-to-one correspondence between the hardware device working parameters and the global control signal corresponding to the backlight brightness.
  • a global control signal is generated by generating the illumination signals of the plurality of first displays, and the global control signal is used to control the backlight brightness of each first display.
  • the backlight brightness of each of the first displays can be adjusted to be consistent. When switching to watch different first displays, the user will not feel the difference in brightness of the first display, and the user's eyes do not need to adjust the adaptive state.
  • an adaptive control signal is selected by using an illumination signal (eg, illumination signal corresponding to each first display, or illumination signal of the whole area).
  • an illumination signal eg, illumination signal corresponding to each first display, or illumination signal of the whole area.
  • the backlight brightness adjustment curve is a monotonic curve that determines the corresponding relationship between the illuminance signal of a certain interval and the backlight brightness of a certain interval.
  • the backlight brightness adjustment curve may be determined by multiple curve construction base points, and the correspondence between the illuminance signal and the backlight brightness in the aforementioned curve construction base points is known.
  • selecting the corresponding backlight brightness adjustment curve is, determining a plurality of adjacent curve construction base points according to the first illuminance signal, and then using the aforementioned adjacent curve construction base points to construct according to a predetermined curve construction algorithm Backlight brightness adjustment curve.
  • the curve construction algorithm can be a cubic spline curve construction algorithm, so that the constructed backlight brightness adjustment curve is a cubic spline curve, which has good smooth characteristics and avoids the problem of extreme changes in backlight brightness.
  • the curve construction algorithm may also be other high-level smooth curve construction algorithms.
  • S10212 Obtain a corresponding adaptive control signal according to each illuminance signal and the corresponding backlight brightness adjustment curve.
  • step S10212 the process of obtaining the adaptive control signal according to the illuminance signal and the backlight brightness adjustment curve is the process of taking the illuminance signal as an independent variable into the backlight brightness adjustment curve to obtain the adaptive control signal.
  • the cubic spline curve corresponding to each illumination signal should be able to be adjusted.
  • the corresponding relationship between the light intensity and the backlight brightness in each curve construction base point can be adjusted, and then a new backlight brightness adjustment curve can be constructed based on the adjusted curve construction base point.
  • a system attribute script can be set, and the data of the curve construction base point is stored in the system attribute script; when the user thinks that the backlight brightness adjustment does not meet the requirements, the backlight brightness adjustment curve can be reconstructed by changing the data in the system attribute script.
  • the illuminance signal corresponding to each display is periodically obtained, and the global control signal is periodically generated to realize the periodic adjustment of the backlight brightness.
  • the ambient light intensity does not change greatly, or the strong light irradiates the illuminance sensor of the first display for a short time, but the global control signal generated according to the illuminance sensor changes, so in step S103, the global control signal generated according to the new period will be
  • the backlight brightness of the first display is re-adjusted, and the adjusted backlight brightness changes are visually perceptible by the user, resulting in decreased comfort.
  • FIG. 3 is a flowchart of controlling the brightness of the backlight of the first display according to an embodiment of the present application.
  • step S103 may be performed according to steps S1031-S1035 shown in FIG. 3 .
  • S1031 Determine a difference threshold according to the global control signal being used.
  • the global control signal being used is the control signal currently used to determine the brightness of the backlight of the first display.
  • different ranges of global control signals correspond to different difference thresholds.
  • a corresponding data table may be searched according to the global control signal being used to determine the difference threshold.
  • S1032 Calculate the difference between the newly generated global control signal and the current global control signal.
  • the newly generated global control signal is a newly generated global control signal according to the newly acquired illuminance signal corresponding to each display.
  • S1033 Determine whether the difference is smaller than the difference threshold; if yes, execute S1034; if not, execute S1035.
  • S1035 Use the newly generated global control signal to control the backlight brightness of each first display.
  • the brightness of the first display is no longer adjusted. And only when the difference between the newly generated global control signal and the currently used global control signal is greater than the difference threshold, that is, when it is determined that the ambient light intensity has changed greatly, the newly generated global control signal is used to control each first display. background brightness.
  • the brightness of the first display will not be adjusted at high frequency, which makes the brightness of the backlight of the first display more comfortable and reduces the consumption caused by frequently controlling the brightness of the backlight of the display.
  • a second display that is used simultaneously with the first display may also be included.
  • the second display is a display without an illuminance sensor.
  • step S103 may further include: using a global control signal to control the backlight brightness of the second display.
  • a global control signal to control the backlight brightness of the second display.
  • it also needs to be standardized and calibrated according to the backlight brightness of the second display.
  • the illuminance sensor can be directly ignored.
  • all illuminance signals can be ignored, and each display can be directly controlled according to the default global control signal, or the user can be prompted to adjust the brightness of the displays according to requirements.
  • an interface for manually adjusting the brightness of the backlight of each display can also be provided for the user, so that the user can realize the independent adjustment or coordination of the brightness of each display according to their own needs. Adjustment.
  • Embodiments of the present application further provide an apparatus for adjusting the brightness of a backlight of a display.
  • FIG. 4 is a schematic structural diagram of an apparatus for adjusting the brightness of a display backlight provided by an embodiment of the present application.
  • the adjustment device includes an illumination signal acquisition unit 11 , a control signal generation unit 12 and a control unit 13 .
  • the illuminance signal acquiring unit 11 is configured to acquire illuminance signals corresponding to a plurality of first displays.
  • the first display is a display configured with an illuminance sensor.
  • An illuminance sensor is a sensor that can detect the intensity of light irradiated on its surface and generate a corresponding illuminance signal.
  • the illuminance sensor is mostly installed near the light-emitting side of the display screen of the first display, or directly integrated in the display area of the first display. After the ambient light facing the side of the display screen of the first display irradiates the illuminance sensor, the illuminance sensor generates a corresponding illuminance signal.
  • the number of the first displays is multiple.
  • the environmental characteristics of the multiple setting directions or setting positions of each first display are different, and the ambient light intensity illuminating each first display may be different, which also makes the illuminance signals generated by the illuminance sensors corresponding to each first display different.
  • the control signal generating unit 12 is configured to generate a global control signal according to the illuminance signal corresponding to each first display.
  • the backlight brightness adjustment device provided by the embodiment of the present application uniformly adjusts the backlight brightness of each first display; and the premise of uniformly adjusting the backlight brightness of each first display is to determine a control signal for uniform adjustment, that is, a control signal generating unit 12 Generated global control signals.
  • the device for adjusting the backlight brightness periodically adjusts the backlight brightness of the display; in order to prevent the adjustment frequency from being too high and affecting the user's photopic vision, the adjustment period is on the order of seconds.
  • the period in which the illuminance sensor generates an illuminance signal is on the order of milliseconds. Therefore, in one backlight brightness adjustment cycle, the illuminance sensor generates a large number of illuminance signals.
  • the control signal generation unit 12 may average all the light intensity signals generated by the light intensity sensor in one backlight brightness adjustment period to obtain an average value, And the average value is used as the illuminance signal for subsequent use. It is conceivable that the average illuminance signal representing the backlight brightness adjustment period can be obtained by obtaining the average value, so that the illuminance signal of the user's subsequent steps is more in line with the actual use situation.
  • control signal generating unit 12 may include an adaptive signal generating subunit and a comprehensive signal generating subunit.
  • the adaptive signal generating subunit is configured to generate corresponding adaptive control signals according to the corresponding illuminance signals of each first display.
  • the adaptive control signal is originally a signal used to independently control the backlight brightness of each first display.
  • the embodiment of the present application according to the environmental scene conditions where the first displays at different positions are located, has its illumination signal and environment The correspondence between light intensities is not the same.
  • the backlight brightness of each first display will generally be at the same level.
  • the brightness interval is only the difference between the actual backlight brightness of each first display.
  • the integrated signal generating subunit is used for generating a global control signal according to each adaptive control signal. After acquiring each adaptive control signal, a certain processor generates a global control signal according to each adaptive control signal.
  • the methods for determining the global control signal by the integrated signal generating subunit may include the following methods.
  • control signal generating unit 12 may further include a global illumination signal subunit and a comprehensive signal generating subunit.
  • the global illuminance signal subunit is configured to determine the global illuminance signal according to the illuminance signal corresponding to each first display.
  • the global illuminance signal is an illuminance signal representing the global environmental state of the plurality of first sensors.
  • the method of calculating the weighted average value may be used to determine the global illuminance signal, and the weighting coefficient corresponding to each display illuminance signal may be predetermined.
  • the integrated signal generating subunit generates a corresponding adaptive control signal according to the global illumination signal.
  • the adaptive control signal may be determined according to a predetermined query method.
  • control unit 13 may use the global control signal to control the backlight brightness of each first display.
  • control unit 13 After generating the global control signal, the control unit 13 sends the global control signal to each first display, so that each first display adjusts corresponding hardware operating parameters according to the global control signal, so that the backlight brightness of each display is adjusted to be consistent.
  • adjusting the corresponding hardware operating parameters according to the global control signal is adjusting the luminous power of the backlight light source of the LCD display; when the first display is an LED display, adjusting the corresponding hardware according to the global control signal
  • the working parameter is to adjust the available maximum luminous power of the luminous point of each pixel.
  • each first display has been uniformly calibrated; the process of standardized calibration establishes the hardware under each backlight brightness of the display. Device working parameters, and establish a one-to-one correspondence between the hardware device working parameters and the global control signal corresponding to the backlight brightness.
  • the apparatus for adjusting the brightness of the display backlight provided by the embodiment of the present application generates a global control signal from the illuminance signals of a plurality of first displays, and uses the global control signal to control the backlight brightness of each first display.
  • the backlight brightness of each of the first displays can be adjusted to be consistent. When switching to watch different first displays, the user will not feel the difference in brightness of the first display, and the user's eyes do not need to adjust the adaptive state.
  • the step of the adaptive signal generating subunit generating the adaptive control signal according to the illuminance signal includes steps S201-S202.
  • the backlight brightness adjustment curve is a monotonic curve that determines the corresponding relationship between the illuminance signal of a certain interval and the backlight brightness of a certain interval.
  • the backlight brightness adjustment curve may be determined by multiple curve construction base points, and the correspondence between the illuminance signal and the backlight brightness in the aforementioned curve construction base points is known.
  • selecting the corresponding backlight brightness adjustment curve is, determining a plurality of adjacent curve construction base points according to the first illuminance signal, and then using the aforementioned adjacent curve construction base points to construct according to a predetermined curve construction algorithm Backlight brightness adjustment curve.
  • the curve construction algorithm can be a cubic spline curve construction algorithm, so that the constructed backlight brightness adjustment curve is a cubic spline curve, which has good smooth characteristics and avoids the problem of extreme changes in backlight brightness.
  • the curve construction algorithm may also be other high-level smooth curve construction algorithms.
  • step S202 the process of obtaining the adaptive control signal according to the illuminance signal and the backlight brightness adjustment curve is the process of taking the illuminance signal as an independent variable into the backlight brightness adjustment curve to obtain the adaptive control signal.
  • the cubic spline curve corresponding to each illumination signal should be able to be adjusted.
  • the corresponding relationship between the light intensity and the backlight brightness in each curve construction base point can be adjusted, and then a new backlight brightness adjustment curve can be constructed based on the adjusted curve construction base point.
  • a system attribute script can be set, and the data of the curve construction base point is stored in the system attribute script; when the user thinks that the backlight brightness adjustment does not meet the requirements, the backlight brightness adjustment curve can be reconstructed by changing the data in the system attribute script.
  • the brightness of the backlight is adjusted periodically. At this time, there may be a situation that the ambient light intensity does not change greatly, or the strong light irradiates the illuminance sensor of the first display for a short time, but according to the illuminance sensor
  • the generated global control signal changes, and the backlight brightness of the first display is re-adjusted according to the global control signal generated in the new period, and the adjusted backlight brightness change is visually perceptible by the user, resulting in decreased comfort.
  • the control unit 13 may include a threshold determination subunit, a difference calculation subunit, a judgment subunit, and a control subunit.
  • the threshold determination subunit is used to determine the difference threshold according to the global control signal being used.
  • the global control signal in use is the control signal currently used to determine the brightness of the backlight of the first display.
  • the difference calculation subunit is used to calculate the difference between the newly generated global control signal and the currently used global control global control signal.
  • the newly generated global control signal is a newly generated global control signal according to the newly acquired illuminance signal corresponding to each display.
  • the judging subunit is used for judging whether the difference is smaller than the difference threshold.
  • the control sub-unit is used to control the background brightness of the first display to remain unchanged when the judgment unit judges that the difference is less than the difference threshold, or to adopt the latest generated global when the judgment unit judges that the difference is not less than the difference threshold.
  • the control signal controls the backlight brightness of each of the first displays.
  • control unit 13 does not adjust the brightness of the first display at high frequency when the ambient light intensity does not change much, which also makes the brightness of the backlight of the first display more comfortable and reduces the frequency of Controls the consumption caused by the brightness of the display backlight.
  • a second display that is used simultaneously with the first display may also be included.
  • the second display is a display without an illuminance sensor.
  • the control unit 13 may also use a global control signal to control the backlight brightness of the second display.
  • FIG. 5 is a schematic diagram of a controller provided by an embodiment of the present application. As shown in FIG. 5 , the controller includes at least one processor 21 , at least one memory 22 and at least one communication interface 23 .
  • the memory 22 in this embodiment of the present application may be a volatile memory or a non-volatile memory, or a combination of the foregoing two.
  • the memory 22 stores an application program, and the program implementing the method for adjusting the brightness of the display backlight provided by the embodiments of the present application may be included in the application program.
  • the processor 21 executes each step of the method for adjusting the brightness of the display backlight by calling the program or instruction stored in the memory 22 (specifically, the program or instruction stored in the application program).
  • the processor 21 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method for adjusting the brightness of the display backlight may be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software units in the decoding processor.
  • the software unit can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory 22, and the processor 21 reads the information in the memory 22 and completes the steps of the method in combination with its hardware.
  • the communication interface 23 is used to realize the information transmission between the electronic device and the external device, for example, to obtain the illuminance signal generated by the illuminance sensor in each first display, and to issue the generated integrated controller to each of the first display and the second display .
  • bus system 24 The memory and processor components in the controller in this embodiment of the present application are coupled together through a bus system 24, and the bus system 24 is used to implement connection and communication between these components.
  • the bus system may be a CAN bus, or may be other types of buses.
  • the bus system 24 also includes a power bus, a control bus and a status signal bus.
  • the various buses are designated as bus system 24 in FIG. 7 .
  • the embodiment of the present application further proposes a non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium stores a program or an instruction, and the program or the instruction causes a computer to execute the steps of the previous embodiment of the display brightness adjustment method, In order to avoid repeated descriptions, details are not repeated here.
  • FIG. 6 is a schematic structural diagram of a display system provided by an embodiment of the present application.
  • the display system includes a controller 31 and a plurality of first displays 32 .
  • the first display 32 is a display equipped with an illuminance sensor, and the illuminance sensor is used to generate an illuminance signal and send the illuminance signal to the controller 31 .
  • the controller 31 executes the display-specific brightness adjustment method mentioned above to generate a comprehensive control signal according to the received illuminance signal, and uses the comprehensive control signal to control the backlight brightness of each first display 32 .
  • the display system may further include a second display 33 ; the second display 33 is a display without an illuminance sensor, which is also connected to the controller 31 .
  • the controller 31 can also control the backlight brightness of the second display 33 according to the integrated control signal.
  • the embodiments of the present application also provide a vehicle, which may include the display system as before.
  • the instrument position display, the central control display, and the passenger seat display in the vehicle may be the aforementioned first display 32 .
  • the aforementioned respective displays are controlled by the controller 31 to achieve consistent and unified adjustment of brightness; in a specific application, the controller 31 may be a vehicle-mounted controller 31 of a vehicle.
  • the display system provided by the embodiments of the present application can also be configured in other application scenarios, for example, in the cockpit of an aircraft, in a securities trading seat where multiple displays need to be configured, and in a central control hall of an enterprise or institution.

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Abstract

一种显示器背光亮度的调整方法和装置。调整方法包括：获取多个第一显示器对应的光照度信号（S101）；第一显示器为配置有光照度传感器的显示器，光照度信号由光照度传感器生成；根据各个第一显示器对应的光照度信号，生成全局控制信号（S102）；采用全局控制信号控制各个第一显示器的背光亮度（S103）。

Description

显示器背光亮度的调整方法和装置
相关申请的交叉引用
本申请基于申请号为202011411531.1、申请日为2020年12月4日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及显示输出技术领域，尤其涉及一种多显示屏的背光亮度调整方法和装置。
背景技术
随着显示器技术的成熟和应用需求的推动，诸如汽车驾驶舱侧的各种仪表、操作按钮逐步由传统的机械式仪表和按钮转换为显示器显示的机械式仪表。为了满足应用需求，汽车驾驶位侧多设置有多个显示器。例如，大部分车辆至少设置一个仪表显示器和中控显示器，某些高档汽车还可能设置副驾驶位显示器和车门侧显示器。
在使用车辆时，驾乘人员会根据自身需求、路况情况和车辆显示器当前显示内容观察各个显示器的输出信息；例如，驾驶员可能需要通过观看仪表显示器查看车速、挡位、动力系统状态、燃料状态等信息，需要通过观看中控显示器获取导航地图、后视摄像头拍摄的图像信息或者虚拟操控按键图像。
根据人眼视觉特性可知，人眼明视觉细胞会根据环境光强度调整对光线的适应性；具体为在外界光线强度较高的情况下，降低视觉灵敏度；而在外界光线强度较低的情况下，提高视觉灵敏度。因此使得在不同的环境光条件下，人眼观察同一显示器亮度时的视觉感受不同；在环境光较强的情况下，可能并不能看到显示器显示亮度；而在环境光亮度较弱的情况下，可能会觉得显示器亮度过亮。
为了适应人眼视觉特性，能够使得显示器根据环境光强度的变化自适应地调整背光亮度；很多车辆中使用的显示器都配置有光照度传感器；显示器可以根据光照度传感器输出信号而确定环境光强度，并根据环境光强度自动地调整背光亮度。
在车辆驾驶舱等布置多个显示器的场景中，多个显示器可能均配置有光照度传感器而实现亮度的自主调整。但是，由于驾驶舱的异形结构和显示器放置位置等原因，不同显示器中光照度传感器被环境光照射的程度不同，各个显示器的显示亮度也就不同。而因为人眼视觉对亮度变化的敏感性，驾乘人员在不同显示器间切换观看时能够明显地感觉到显示器亮度的 差异，使用体验并不好。
在一些特殊场景的外界环境光条件下，各个显示器因为环境光照射而呈现不同的显示亮度状态，人眼在观看显示器时会不由自主地进行视觉适应；而切换观看不同亮度显示器造成的高频度视觉适应调整使得用户眼睛很快疲劳。
发明内容
为了解决上述技术问题或者至少部分地解决上述技术问题，本申请提供了一种显示器背光亮度的调整方法和装置。
一方面，本申请提供一种显示器背光亮度的调整方法，包括：
获取多个第一显示器对应的光照度信号；所述第一显示器为配置有光照度传感器的显示器，所述光照度信号由所述光照度传感器生成；
根据各个所述第一显示器对应的所述光照度信号，生成全局控制信号；
采用所述全局控制信号控制各个所述第一显示器的背光亮度。
可选地，根据各个所述第一显示器对应的光照度信号，生成全局控制信号，包括：
根据各个所述第一显示器对应的所述光照度信号，生成对应的自适应控制信号；
根据各个所述自适应控制信号，生成所述全局控制信号。
可选地，根据各个所述自适应控制信号，生成所述全局控制信号，包括：
求取各个所述自适应控制信号的加权平均值，将所述加权平均值作为所述全局控制信号；或者，
选择所述自适应控制信号的最大值或者最小值，将所述最大值或者所述最小值作为所述全局控制信号。
可选地，根据各个所述第一显示器对应的所述光照度信号，生成对应的自适应控制信号，包括：
根据各个所述第一显示器对应的所述光照度信号，分别选择对应的背光亮度调整曲线；
根据各个所述光照度信号和对应的所述背光亮度调整曲线，得到对应的所述自适应控制信号。
可选地，根据各个所述第一显示器对应的光照度信号，分别选择对应的背光亮度调整曲线，包括：
根据所述各个第一显示器对应的光照度信号，分别确定多个曲线构建基点；各个所述曲线构建基点中光照度信号和背光亮度的对应关系已知；
采用所述多个曲线构建基点，构建与各个所述光照度信号对应的所述背光亮度调整曲线。
可选地，各个所述曲线构建基点中光照强度和背光亮度的对应关系均可调整。
可选地，获取多个第一显示器对应的光照度信号，包括：周期性地获取多个所述第一显示器对应的所述光照度信号；
根据各个所述第一显示器对应的所述光照度信号，生成全局控制信号，包括：周期性地根据各个所述第一显示器对应的所述光照度信号，生成所述全局控制信号；
采用所述全局控制信号控制各个所述第一显示器的背光亮度，包括：
根据正在使用的所述全局控制信号确定差值阈值；
计算新生成的所述全局控制信号和正在使用的所述全局控制全局控制信号的差值；
判断所述差值是否小于所述差值阈值；
若是，控制第一显示器的背景亮度不变；
若否，采用新生成的所述全局控制信号控制各个所述第一显示器的背光亮度。
可选地，还包括第二显示器；所述第二显示器为未配置所述光照度传感器的显示器；
所述方法还包括：采用所述全局控制信号控制所述第二显示器的背光亮度。
另一方面，本申请提供一种显示器背光亮度的调整装置，包括：
光照度信号获取单元，用于获取多个第一显示器对应的光照度信号；所述第一显示器为配置有光照度传感器的显示器，所述光照度信号由所述光照度传感器生成；
控制信号生成单元，用于根据各个所述第一显示器对应的所述光照度信号，生成全局控制信号；
控制单元，用于采用所述全局控制信号控制各个所述第一显示器的背光亮度。
可选地，所述控制信号生成单元包括：
自适应信号生成子单元，用于根据各个所述第一显示器对应的所述光照度信号，生成对应的自适应控制信号；
综合信号生成子单元，用于根据各个所述自适应控制信号，生成所述全局控制信号。
可选地，所述综合信号生成子单元将所述自适应控制信号的加权平均值作为所述全局控制信号；或者，
将所述自适应控制信号的最大值或者最小值作为所述全局控制信号。
可选地，所述自适应信号生成子单元根据各个所述第一显示器对应的所述光照度信号，生成对应的自适应控制信号包括：
根据各个所述第一显示器对应的所述光照度信号，分别选择对应的背光亮度调整曲线；
根据各个所述光照度信号和对应的所述背光亮度调整曲线，得到对应的所述自适应控制信号。
可选地，所述光照度信号获取单元周期性地获取多个所述第一显示器对应的所述光照度信号；所述控制信号生成单元根据周期性获取的所述光照度信号计算所述全局控制信号；
所述控制单元包括：阈值确定子单元根据正在使用的全局控制信号确定差值阈值；
差值计算单元计算新生成的所述全局控制信号和正在使用的所述全局控制全局控制信号的差值；
判断子单元，判断所述差值是否小于所述差值阈值；
控制子单元，用于在所述判断单元判定所述差值小于所述差值阈值的情况下控制第一显示器的背景亮度不变，或用于在所述判断单元判定所述差值不小于所述差值阈值的情况下采用新生成的所述全局控制信号控制各个所述第一显示器的背光亮度。
再一方面，本申请提供一种显示器系统，包括：控制器和多个第一显示器；
各个所述第一显示器均为配置有光照度传感器的显示器；所述光照度传感器用于生成光照度信号；
所述控制器用于根据接收到的所述光照度信号，执行如前所述的显示器背光亮度的调整方法，以调整各个所述第一显示器的背光亮度。
再一方面，本申请提供一种车辆，包括如前所述的显示器系统；所述显示器系统中的各个第一显示器设置在所述车辆座舱中的不同位置处。
本申请提供的显示器背光亮度的调整方法和装置，通过将多个第一显示器的光照度信号生成一全局控制信号，并采用全局控制信号控制各个第一显示器的背光亮度。在各个第一显示器均作了同一化的标定的前提下，各个第一显示器的背光亮度可以被调整一致。用户在切换观看不同的第一显示器时，不会感觉到第一显示器的亮度差别，用户的眼睛也无需调整自适应状态。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图；
图1是本申请实施例提供的显示器背光亮度的调整方法流程图；
图2是本申请实施例提供的一种生成全局控制信号的方法流程图；
图3是本申请实施例提供的控制第一显示器背光亮度的流程图；
图4是本申请实施例提供的显示器背光亮度的调整装置的结构示意图；
图5是本申请实施例提供的控制器的示意图；
图6是本申请实施例提供的显示器系统的结构示意图。
其中：11-光照度信号获取单元，12-控制信号生成单元，13-控制单元；21-处理器，22-存储器，23-通信接口，24-总线系统；31-控制器，32-第一显示器，33-第二显示器。
具体实施方式
为了能够更清楚地理解本申请的上述目的、特征和优点，下面将对本申请的方案进行进一步描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本申请，但本申请还可以采用其他不同于在此描述的方式来实施；显然，说明书中的实施例只是本申请的一部分实施例，而不是全部的实施例。
本申请实施例提供一种显示器背光亮度的调整方法和装置，用于全局性地控制多个显示器的背光亮度，实现多个显示器背光亮度的一致。
在对本申请实施例提供的显示器背光亮度调整方法做介绍前，首先对背光亮度涵义做一介绍。从应用的角度考虑，背光亮度是指采用最大灰度信号驱动显示器的像素时，使得显示器输出的光线亮度。例如：如果显示器是RGB三色显示器，RGB三色对应的最大灰度驱动信号为(255，255，255)，采用(255，255，255)驱动显示器某一像素区域时，则此某一像素区域输出的亮度为背光亮度。
本申请实施例中，显示器多为LCD显示器或者LED显示器(在某些特殊应用中，显示器还可能为CRT显示器，此处不再对其背光亮度的涵义做介绍)。为了能够合理地理解背光亮度在两种显示器涵义，以下先行对两种显示器的工作原理做介绍，再对两种显示器应用中背光亮度的具体涵义做解释，以期更为清晰地理解背光亮度的涵义。
LCD显示器包括背光光源和液晶层；LCD显示器使用时，背光光源产生的入射光线照射到液晶层的像素点后，经过液晶层像素点调制而形成对应强度的出射光线；多个像素点对应的输出光线照射到人眼而形成显示图像。
在液晶层像素点的驱动信号确定(也就是液晶层像素点对入射光线的调制程度确定)的情况下，背光光源的强度直接决定液晶层像素点出射光线的强度，也就决定显示图像在人眼中的明度感觉。为了在不同环境光照度条件下输出的出射光线均满足人眼明视觉特性的需求，可以对LCD显示器的背光光源输出功率(也就是发光功率)做调整。对LCD显示器背光光源输出功率的调整即为对背光亮度的调整。
LED显示器在每个像素点均设置尺寸较小的自发光点，利用自发光点发光形成对应像素点的出射光线。LED显示器使用时，驱动信号驱动各个自发光点按照对应的发光功率发光，使得各个像素点生成对应强度的出射光线；多个像素点对应的输出光线照射到人眼而形成显示图像。
为了在不同环境光照度条件下输出的出射光线均满足人眼明视觉特性的需求，可以根据环境光照度对LED显示器中发光点的设定最大发光功率做适应性调整。虽然LED显示器并没有背光光源，对其亮度调整并不是对背光光源的发光强度做调整；但是为了沿用LCD显示器应用时的技术术语，将对LED显示器发光点的设定最大发光功率的调整被定义为对LED显示器背光亮度的调整。
图1是本申请实施例提供的显示器背光亮度的调整方法流程图。如图1所示，本申请实施例提供的背光亮度的调整方法包括步骤S101-S103。
S101：获取多个第一显示器的光照度信号。
本申请实施例中，第一显示器是配置有光照度传感器的显示器。光照度传感器是对照射在其表面的光强度进行检测，并生成对应光照度信号的传感器。
具体应用中，光照度传感器多安装在第一显示器的显示屏发光侧附近，或者直接集成在第一显示器的显示区域内。第一显示器所处环境的环境光照射到光照度传感器后，光照度传感器即生成对应的光照度信号。
本申请实施例中，第一显示器的数量为多个。实际应用中，各个第一显示器的设置方向或者设置位置的环境特性并不相同，照射各个第一显示器的环境光强度可能不同，也就使得各个第一显示器对应的光照度传感器生成的光照度信号不同。
以多个第一显示器为配置在车辆驾驶舱的显示器为例：第一显示器分别为仪表位显示器和中控位显示器。
仪表位显示器多设置在方向盘前侧内凹位置，其周围被工作台环绕；在正常使用情况下照射在仪表位显示器的环境光线较少，安装在仪表位显示器侧的光照度传感器生成的光照度信号较小。
中控位显示器设置在主驾驶位和副驾驶位之间的显示器；因为处在较为开放的环境，通过各个车窗玻璃入射的环境光都可能照射到中控位显示器上，车内阅读灯开启时形成的光线也可以照射到中控位显示器上，所以安装在中控位显示器侧的光照度传感器生成的光照度信号相对于安装在仪表位显示器侧的光照度传感器生成的光照度信号大。
S102：根据各个第一显示器对应的光照度信号，生成全局控制信号。
在现有技术中显示器的亮度调整方法中，在获得对应光传感器生成的光照度信号后，分别根据各个光照度传感器信号调整对应的第一显示器；因为各个显示器独立地调整，所以大概率造成各个第一显示器的背光亮度不相同。
本申请实施例提供的背光亮度调整方法统一地调整各个第一显示器的背光亮度；而统一调整各个第一显示器的背光亮度的前提是确定一用于统一调整的控制信号，也就是步骤S102中提及的全局控制信号。
本申请实施例中，背光亮度的调整方法周期性地实现显示器背光亮度的调整；为了避免调整频率过高反而对用户明视觉造成影响，调整周期的数量级为秒级。而实际应用中，光照度传感器生成光照度信号是的周期数量级为毫秒级，因此在一个背光亮度调整周期内，光照度传感器生成大量的光照度信号。
为了实现背光亮度调整周期和光照度传感器生成光照度信号周期的匹配，本申请实施例中，可以将一个背光亮度调整周期内光照度传感器生成的所有光照度信号进行平均而得到一平均值，并将平均值作为后续使用的光照度信号。可以想到，通过求取平均值的方法可以得到表征背光亮度调整周期内的平均光照度信号，使得用户后续步骤的光照度信号更符合真实使用情况。
在一个具体应用中，背光亮度的调整周期为10s，而各个第一显示器中环境光传感器光照度信号生成周期为500ms，所以在一个背光亮度调整周期内，生成20个光照度信号；随后求取20个光照度信号的平均值作用于后续处理。
本申请实施例中，根据各个第一显示器对应的光照度信号，生成全局控制信号的方法有多种。
图2是本申请实施例提供的一种生成全局控制信号的方法流程图。如图2所示，一种生成全局控制信号的方法包括步骤S1021和S1022。
S1021：根据各个第一显示器对应的光照度信号，生成对应的自适应控制信号。
本申请实施例中，自适应控制信号原本用于独立地控制各个第一显示器背光亮度的信号。
为了满足实际应用中各种可能情况，同时能够为调整各个第一显示器的背光亮度提供可 选选择，本申请实施例针对不同位置的第一显示器所处的环境场景条件，对其光照度信号和环境光强度之间的对应关系并不相同。
在此前提下，即使多个第一显示器所处的环境光条件相差很大(也就是光照度信号差别很大)，根据自适应控制信号调整后，各个第一显示器的背光亮度大体会处在一个亮度区间，只是各个第一显示器的实际背光亮度有差异。
仍然以前述的车辆驾驶舱的显示器为例，假设仪表位显示器和中控位显示器中环境光传感器的实际检测范围为0-10000lux，两个显示器的背光亮度调整范围均为0-255。正常应用条件下，中控位显示器所处的环境光强度在5000lux时，仪表位显示器所处的环境光强度也可能仅在1000lux左右。而在前期配置过程中，对应中控位显示器的背光亮度可能被设置为186，而对应仪表位显示器的背光亮度可能被设置为153。
应当注意的是，前述确定各个第一显示器对应的自适应控制信号的过程可以在同一处理器中执行，也可以在不同的处理器中执行。如果确定各个第一显示器对应的自适应控制信号的过程在不同的处理器中执行，随后需要将得到的自适应控制信号发送至一个处理器，再由此处理器执行后续的操作步骤。
S1022：根据各个自适应控制信号，生成全局控制信号。
在获取各个自适应控制信号后，某一处理器根据各个自适应控制信号，生成全局控制信号。
根据各个自适应控制信号生成全局控制信号可能有如下几种方式。
(1)求取各个自适应控制信号的加权平均值，将加权平均值作为全局控制信号；各个自适应控制信号对应的加权系数可以预先地配置，并且在不同的环境光条件下(通过某一第一显示器对应的光强度信号确定)，各个自适应控制信号对应的加权系数均会调整。
(2)选择自适应控制信号中的最大值作为全局控制信号。
(3)选择自适应控制信号中的最小值作为全局控制信号。
前述的三种方法均可以配置在处理器中，由用户选择计算全局控制信号的方式，或者根据环境光强度的特性自动地选择计算全局控制信号的方式。
除了前述步骤S1021和S1022确定的计算全局控制信号的方法外，本申请实施例还提供另外一种全局控制信号的计算方法，包括步骤1023和S1024。
S1023：根据各个第一显示器对应的光照度信号，确定全局光照度信号。
全局光照度信号是一种表示多个第一传感器全局环境状态的照度信号。本申请实施例具体应用中，可以采用计算加权平均值的方法确定全局光照度信号，各个显示器光照度信号对 应的加权系数可以预先地确定。
S1024：根据全局光照度信号，生成全局控制控制信号。
在全局控制信号确定后，可以按照预先确定的查询方法确定自适应控制信号。
在确定全局控制信号后，可以执行步骤S103的步骤，以实现各个第一显示器亮度的一致。
S103：采用全局控制信号控制各个第一显示器的背光亮度。
在生成全局控制信号后，随后将全局控制信号下发给各个第一显示器，以使得各个第一显示器根据全局控制信号调整对应的硬件工作参数，使得各个显示器的背光亮度调整至一致。
在第一显示器为LCD显示器的情况下，根据全局控制信号调整对应的硬件工作参数为调整LCD显示器的背光光源发光功率；在第一显示器为LED显示器的情况下，根据全局控制信号调整对应的硬件工作参数为调整各个像素发光点的可用最大发光功率。
应当注意的是，采用全局控制信号将各个显示器的背光亮度调整信号调整为一致的前提是，对各个第一显示器均作了同一化的标定；标准化标定的过程建立起显示器各个背光亮度下的硬件设备工作参数，并将硬件设备工作参数和此背光亮度对应的全局控制信号建立起一一对应关系。
采用前述步骤S101-S103步骤，通过将多个第一显示器的光照度信号生成一全局控制信号，并采用全局控制信号控制各个第一显示器的背光亮度。在各个第一显示器均作了同一化的标定的前提下，各个第一显示器的背光亮度可以被调整一致。用户在切换观看不同的第一显示器时，不会感觉到第一显示器的亮度差别，用户的眼睛也无需调整自适应状态。
如前文所述，步骤S1021和S1024中，均是利用一个光照度信号(例如各个第一显示器对应的光照度信号，或者全区光照度信号)选择自适应控制信号。以步骤S1021为例，本申请实施例具体应用中，利用光照度信号确定自适应控制信号的步骤包括S10211和S10212。
S10211：根据各个第一显示器对应的光照度信号，分别选择对应的背光亮度调整曲线。
背光亮度调整曲线是确定某一区间的光照度信号和某一区间背光亮度之间对应关系的单调曲线。
在本申请实施例某一应用中，背光亮度调整曲线可以通过多个曲线构建基点确定，前述的曲线构建基点中光照度信号和背光亮度的对应关系已知。
根据第一显示器对应的光照度信号，选择对应的背光亮度调整曲线为，根据第一光照度信号确定多个相邻的曲线构建基点，随后采用前述相邻的曲线构建基点按照预先确定的曲线构建算法构建背光亮度调整曲线。
实际应用中，曲线构建算法可以为三次样条曲线构建算法，使得构建的背光亮度调整曲线为三次样条曲线，继而具有良好的平滑特性，避免出现背光亮度出现极端变化的问题。当然，在本申请实施其他应用中，曲线构建算法也可以其他的高位平滑曲线构建算法。
S10212：根据各个光照度信号和对应的背光亮度调整曲线，得到对应的自适应控制信号。
步骤S10212具体执行中，根据光照度信号和背光亮度调整曲线得到自适应控制信号的过程，是将光照度信号作为自变量带入到背光亮度调整曲线中而得到自适应控制信号的过程。
为了使得背光亮度调整算法生成的自适应亮度信号符合用户的需求，应当使得各个光照度信号对应的三次样条曲线能够调节。为实现前述目标，本申请实施例中可以使得各个曲线构建基点中光照强度和背光亮度的对应关系可被调整，继而使得基于调整后的曲线构建基点构建新的背光亮度调整曲线。
具体实施例中，可以设置一系统属性脚本，系统属性脚本中存储曲线构建基点的数据；在用户认为背光亮度调整不满足需求时，可以通过更改系统属性脚本中数据的方式重新构建背光亮度调整曲线。
如前所述，在前述步骤S101-S103实际应用中，周期性获得各个显示器对应的光照度信号，并周期性地生成全局控制信号，以实现背光亮度周期性地调整，此时可能出现一种情况为：环境光强度并没有大的变化，或者短时间强光照射到第一显示器的光照度传感器，但是根据光照度传感器生成的全局控制信号发生变化，因此步骤S103中会根据新周期生成的全局控制信号重新调整第一显示器的背光亮度，而调整后的背光亮度变化是用户视觉可感知的，而造成舒适度下降。
图3是本申请实施例提供的控制第一显示器背光亮度的流程图。为解决前段提及的问题，在本申请实施例一个应用中，步骤S103可以按照图3中所示的步骤S1031-S1035执行。
S1031：根据正在使用的全局控制信号确定差值阈值。
正在使用的全局控制信号是当前用于确定第一显示器背光亮度的控制信号。本申请实施例中，不同范围的全局控制信号对应不同的差值阈值。具体实施例中，可以根据正在使用的全局控制信号查找相应的数据表，确定差值阈值。
S1032：计算最新生成的全局控制信号和正在使用的全局控制信号的差值。
最新生成的全局控制信号是根据最新获取的各个显示器对应的光照度信号，新生成的全局控制信号。
S1033：判断差值是否小于差值阈值；若是，执行S1034；若否，执行S1035。
S1034：控制第一显示器的背景亮度不变。
S1035：采用最新生成的全局控制信号控制各个第一显示器的背光亮度。
采用前述的步骤S1031-S1035，在最新生成的全局控制信号与正在使用的全局控制信号差别小于差值阈值时，不再对第一显示器的亮度进行调整。而只有在最新生成的全局控制信号与正在使用的全局控制信号差值大于差值阈值时，也就是确定环境光强度发生较大变化时，才采用最新生成的全局控制信号控制各个第一显示器的背景亮度。
如此，在环境光强度变化不大时，并不会对第一显示器亮度做高频次的调整，也使得第一显示器背光亮度更舒适，也减小了频繁控制显示器背光亮度造成的消耗。
在实际应用场景中，除了前述的第一显示器外，还可能包括与第一显示器同时使用的第二显示器。第二显示器为没有配置光照度传感器的显示器。
为了能够使得第二显示器的背光亮度和前述的第一显示器的背光亮度一致，步骤S103还可以包括：采用全局控制信号控制第二显示器的背光亮度。当然，还需要按照第二显示器的背光亮度进行标准化标定。
在本申请实施例提供的显示器背光亮度的调整方法具体实施中，可能出现的情况是：某一光照度传感器因损坏而使得生成的光照度信号异常。为避免异常光照度信号对各个显示器背光亮度信号的调整造成影响，可以直接忽略此光照度传感器。在所有第一显示器的光照度传感器都可能故障的情况下，可以忽略所有的光照度信号，而直接按照默认的全局控制信号控制各个显示器，或者提示用户根据需求调整显示器的亮度。
除了提供前述的自动调整显示器背光亮度方法外，本申请实施例具体应用中，还可以为用户提供手动调整各个显示器背光亮度的接口，以使得用户根据自己的需求实现各个显示器亮度的单独调整或者协同调整。
本申请实施例还提供一种显示器背光亮度的调整装置。图4是本申请实施例提供的显示器背光亮度的调整装置的结构示意图。如图4所示，调整装置包括光照度信号获取单元11、控制信号生成单元12和控制单元13。
光照度信号获取单元11用于获取多个第一显示器对应的光照度信号。
本申请实施例中，第一显示器是配置有光照度传感器的显示器。光照度传感器是能够根据照射在其表面的光强度进行检测，并生成对应光照度信号的传感器。
具体应用中，光照度传感器多安装在第一显示器的显示屏发光侧附近、或者直接集成在第一显示器的显示区域内。第一显示器显示屏面向侧的环境光照射到光照度传感器后，光照度传感器即生成对应的光照度信号。
本申请实施例中，第一显示器的数量为多个。实际应用中，各个第一显示器多设置方向 或者设置位置的环境特性并不相同，照射各个第一显示器的环境光强度可能不同，也就使得各个第一显示器对应的光照度传感器生成的光照度信号不同。
控制信号生成单元12用于根据各个第一显示器对应的光照度信号，生成全局控制信号。
本申请实施例提供的背光亮度调整装置统一地调整各个第一显示器的背光亮度；而统一调整各个第一显示器的背光亮度的前提是确定一用于统一调整的控制信号，也就是控制信号生成单元12生成的全局控制信号。
本申请实施例中，背光亮度的调整装置周期性地实现显示器背光亮度的调整；为了避免调整频率过高反而对用户明视觉造成影响，调整周期的数量级为秒级。而实际应用中，光照度传感器生成光照度信号是的周期数量级为毫秒级，因此在一个背光亮度调整周期内，光照度传感器生成大量的光照度信号。
为了实现背光亮度调整周期和光照度传感器生成光照度信号周期的匹配，本申请实施例中，控制信号生成单元12可以将一个背光亮度调整周期内光照度传感器生成的所有光照度信号进行平均而得到一平均值，并将平均值作为后续使用的光照度信号。可以想到，通过求取平均值的方法可以得到表征背光亮度调整周期内的平均光照度信号，使得用户后续步骤的光照度信号更符合真实使用情况。
本申请实施例中，控制信号生成单元12可能包括自适应信号生成子单元和综合信号生成子单元。
自适应信号生成子单元用于根据各个第一显示器对应的光照度信号，生成对应的自适应控制信号。
本申请实施例中，自适应控制信号原本用于独立地控制各个第一显示器背光亮度的信号。
为了满足实际应用中各种可能情况，同时能够为调整各个第一显示器的背光亮度提供可选选择，本申请实施例针对不同位置的第一显示器所处的环境场景条件，对其光照度信号和环境光强度之间的对应关系并不相同。
在此前提下，即使多个第一显示器所处的环境光条件相差很大(也就是光照度信号差别很大)，根据自适应控制信号调整后，各个第一显示器的背光亮度大体会处在一个亮度区间，只是各个第一显示器的实际背光亮度有差异。
综合信号生成子单元用于根据各个自适应控制信号，生成全局控制信号。在获取各个自适应控制信号后，某一处理器根据各个自适应控制信号，生成全局控制信号。
具体应用中，综合信号生成子单元确定全局控制信号的方法可能有如下几种方法。
(1)求取各个自适应控制信号的加权平均值，将加权平均值作为全局控制信号；各个 自适应控制信号对应的加权系数可以预先地配置，并且在不同的环境光条件下(通过某一第一显示器对应的光强度信号确定)，各个自适应控制信号对应的加权系数均会调整。
(2)选择自适应控制信号中的最大值作为全局控制信号。
(3)选择自适应控制信号中的最小值作为全局控制信号。
在本申请实施例另一应用中，控制信号生成单元12还可以包括全局光照度信号子单元和综合信号生成子单元。
全局光照度信号子单元用于根据各个第一显示器对应的光照度信号，确定全局光照度信号。
全局光照度信号是一种表示多个第一传感器全局环境状态的照度信号。本申请实施例具体应用中，可以采用计算加权平均值的方法确定全局光照度信号，各个显示器光照度信号对应的加权系数可以预先地确定。
综合信号生成子单元则根据全局光照度信号，生成对应的自适应控制信号。在全局控制信号确定后，可以按照预先确定的查询方法确定自适应控制信号。
在生成全局控制信号后，控制单元13可以采用采用全局控制信号控制各个第一显示器的背光亮度。
在生成全局控制信号后，控制单元13将全局控制信号下发给各个第一显示器，以使得各个第一显示器根据全局控制信号调整对应的硬件工作参数，使得各个显示器的背光亮度调整至一致。
在第一显示器为LCD显示器的情况下，根据全局控制信号调整对应的硬件工作参数为调整LCD显示器的背光光源发光功率；在第一显示器为LED显示器的情况下，根据全局控制信号调整对应的硬件工作参数为调整各个像素发光点的可用最大发光功率。
应当注意的是，采用全局控制信号将各个显示器的背光亮度调整信号调整为一致的前提是，对各个第一显示器均作了同一化的标定；标准化标定的过程建立起显示器各个背光亮度下的硬件设备工作参数，并将硬件设备工作参数和此背光亮度对应的全局控制信号建立起一一对应关系。
本申请实施例提供的显示器背光亮度的调整装置，通过将多个第一显示器的光照度信号生成一全局控制信号，并采用全局控制信号控制各个第一显示器的背光亮度。在各个第一显示器均作了同一化的标定的前提下，各个第一显示器的背光亮度可以被调整一致。用户在切换观看不同的第一显示器时，不会感觉到第一显示器的亮度差别，用户的眼睛也无需调整自适应状态。
本申请实施例具体应用中，自适应信号生成子单元根据光照度信号生成自适应控制信号的步骤包括步骤S201-S202。
S201：根据各个第一显示器对应的光照度信号，分别选择对应的背光亮度调整曲线。
背光亮度调整曲线是确定某一区间的光照度信号和某一区间背光亮度之间对应关系的单调曲线。
在本申请实施例某一应用中，背光亮度调整曲线可以通过多个曲线构建基点确定，前述的曲线构建基点中光照度信号和背光亮度的对应关系已知。
根据第一显示器对应的光照度信号，选择对应的背光亮度调整曲线为，根据第一光照度信号确定多个相邻的曲线构建基点，随后采用前述相邻的曲线构建基点按照预先确定的曲线构建算法构建背光亮度调整曲线。
实际应用中，曲线构建算法可以为三次样条曲线构建算法，使得构建的背光亮度调整曲线为三次样条曲线，继而具有良好的平滑特性，避免出现背光亮度出现极端变化的问题。当然，在本申请实施其他应用中，曲线构建算法也可以其他的高位平滑曲线构建算法。
S202：根据各个光照度信号和对应的背光亮度调整曲线，得到对应的自适应控制信号。
步骤S202具体执行中，根据光照度信号和背光亮度调整曲线得到自适应控制信号的过程，是将光照度信号作为自变量带入到背光亮度调整曲线中而得到自适应控制信号的过程。
为了使得背光亮度调整算法生成的自适应亮度信号符合用户的需求，应当使得各个光照度信号对应的三次样条曲线能够调节。为实现前述目标，本申请实施例中可以使得各个曲线构建基点中光照强度和背光亮度的对应关系可被调整，继而使得基于调整后的曲线构建基点构建新的背光亮度调整曲线。
具体实施例中，可以设置一系统属性脚本，系统属性脚本中存储曲线构建基点的数据；在用户认为背光亮度调整不满足需求时，可以通过更改系统属性脚本中数据的方式重新构建背光亮度调整曲线。
本申请实施例中，背光亮度周期性地被调整，此时可能出现一种情况为：环境光强度并没有大的变化，或者短时间强光照射到第一显示器的光照度传感器，但是根据光照度传感器生成的全局控制信号发生变化，根据新周期生成的全局控制信号重新调整第一显示器的背光亮度，而调整后的背光亮度变化是用户视觉可感知的，而造成舒适度下降。为解决此问题，本申请实施例中控制单元13可以包括阈值确定子单元、差值计算子单元、判断子单元和控制子单元。
阈值确定子单元用于根据正在使用的全局控制信号确定差值阈值。正在使用的全局控制 信号是当前用于确定第一显示器背光亮度的控制信号。
差值计算子单元用于计算最新生成的全局控制信号和正在使用的全局控制全局控制信号的差值。最新生成的全局控制信号是根据最新获取的各个显示器对应的光照度信号，新生成的全局控制信号。
判断子单元用于判断差值是否小于差值阈值。
控制子单元用于在判断单元判定差值小于差值阈值的情况下控制第一显示器的背景亮度不变，或用于在判断单元判定差值不小于差值阈值的情况下采用最新生成的全局控制信号控制各个第一显示器的背光亮度。
通过设置前述各个子单元，控制单元13在在环境光强度变化不大时，并不会对第一显示器亮度做高频次的调整，也使得第一显示器背光亮度更舒适，也减小了频繁控制显示器背光亮度造成的消耗。
本申请实施例具体应用中，除了前述的第一显示器外，还可能包括与第一显示器同时使用的第二显示器。第二显示为没有配置光照度传感器的显示器。为了能够使得第二显示器的背光亮度和前述的第一显示器的背光亮度一致，控制单元13还可以用全局控制信号控制第二显示器的背光亮度。当然，还需要对按照对第二显示器的背光亮度进行标准化标定。
除了提供前述的显示器背光亮度的调整装置外，本申请还提供一种控制器。图5是本申请实施例提供的控制器的示意图。如图5所示，控制器包括至少一个处理器21、至少一个存储器22和至少一个通信接口23。
本申请实施例中的存储器22可以是易失性存储器或非易失性存储器，或是前述的二者的结合。在一些具体实施方式中，存储器22存储有应用程序，实现本申请实施例提供的显示器背光亮度调整方法的程序可以包含在应用程序中。
在本申请实施例中，处理器21通过调用存储器22存储的程序或指令(具体的，可以是应用程序中存储的程序或指令)，以执行显示器背光亮度调整方法的各个步骤。
本申请实施例中，处理器21可以是通用处理器、数字信号处理器(DigitalSignalProcessor，DSP)、专用集成电路(ApplicationSpecific IntegratedCircuit，ASIC)、现成可编程门阵列(FieldProgrammableGateArray，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
本申请实施例提供的显示器背光亮度调整方法步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件单元组合执行完成。软件单元可以位于随机存储 器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器22，处理器21读取存储器22中的信息，结合其硬件完成方法的步骤。
通信接口23用于实现电子设备与外部设备之间的信息传输，例如以获得各个第一显示器中光照度传感器生成的光照度信号，以及将生成的综合控制器下发给各个第一显示器和第二显示器。
本申请实施例控制器中的存储器、处理器组件通过总线系统24耦合在一起，总线系统24用于实现这些组件之间的连接通信。本申请实施例中，总线系统可以为CAN总线，也可以是其他类型的总线。总线系统24除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但为了清楚说明起见，在图7中将各种总线都标为总线系统24。
本申请实施例还提出一种非暂态计算机可读存储介质，非暂态计算机可读存储介质存储程序或指令，程序或指令使计算机执行如前的显示器别光亮度调整方法实施例的步骤，为避免重复描述，在此不再赘述。
除了提供前述的电子设备外，本申请实施例还提供一种显示器系统。图6是本申请实施例提供的显示器系统的结构示意图。
如图6所示，显示器系统包括控制器31和多个第一显示器32。第一显示器32为均为配置有光照度传感器的显示器，光照度传感器用于生成光照度信号，并将光照度信号发送给控制器31。控制器31则根据接收到的光照度信号，执行前文中提及的显示器别光亮度调整方法生成综合控制信号，并利用综合控制信号控制各个第一显示器32的背光亮度。
在本申请实施例一应用中，显示器系统还可以包括第二显示器33；第二显示器33为没有配置光照度传感器的显示器，其也与控制器31连接。控制器31还可以根据综合控制信号控制第二显示器33的背光亮度。
此外，本申请实施例还提供一种车辆，车辆可以包括如前的显示器系统。其中车辆中的仪表位显示器、中控显示器、副驾驶位显示器可以为前述的第一显示器32。前述各个显示器通过控制器31控制而实现亮度的一致和统一调整；具体应用中，控制器31可以是车辆的车机控制器31。
本申请实施例提供的显示器系统还可以配置在其他应用场景中，例如可以配置在飞机驾驶舱中，需要配置多个显示器的证券交易坐席中，企事业单位中控大厅中。
需要说明的是，在本文中，诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任 何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅是本申请的具体实施方式，使本领域技术人员能够理解或实现本申请。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本申请的精神或范围的情况下，在其它实施例中实现。因此，本申请将不会被限制于本文所述的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (15)

  1. 一种显示器背光亮度的调整方法，其特征在于，包括：
    获取多个第一显示器对应的光照度信号；所述第一显示器为配置有光照度传感器的显示器，所述光照度信号由所述光照度传感器生成；
    根据各个所述第一显示器对应的所述光照度信号，生成全局控制信号；
    采用所述全局控制信号控制各个所述第一显示器的背光亮度。
  2. 根据权利要求1所述显示器背光亮度的调整方法，其特征在于，所述根据各个所述第一显示器对应的光照度信号，生成全局控制信号，包括：
    根据各个所述第一显示器对应的所述光照度信号，生成对应的自适应控制信号；
    根据各个所述自适应控制信号，生成所述全局控制信号。
  3. 根据权利要求2所述显示器背光亮度的调整方法，其特征在于，所述根据各个所述自适应控制信号，生成所述全局控制信号，包括：
    求取各个所述自适应控制信号的加权平均值，将所述加权平均值作为所述全局控制信号；或者，
    选择所述自适应控制信号的最大值或者最小值，将所述最大值或者所述最小值作为所述全局控制信号。
  4. 根据权利要求2或3所述显示器背光亮度的调整方法，其特征在于，所述根据各个所述第一显示器对应的所述光照度信号，生成对应的自适应控制信号，包括：
    根据各个所述第一显示器对应的所述光照度信号，分别选择对应的背光亮度调整曲线；
    根据各个所述光照度信号和对应的所述背光亮度调整曲线，得到对应的所述自适应控制信号。
  5. 根据权利要求4所述显示器背光亮度的调整方法，其特征在于：所述根据各个所述第一显示器对应的光照度信号，分别选择对应的背光亮度调整曲线，包括：
    根据所述各个第一显示器对应的光照度信号，分别确定多个曲线构建基点；各个所述曲线构建基点中光照度信号和背光亮度的对应关系已知；
    采用所述多个曲线构建基点，构建与各个所述光照度信号对应的所述背光亮度调整曲线。
  6. 根据权利要求5所述显示器背光亮度的调整方法，其特征在于：
    各个所述曲线构建基点中光照强度和背光亮度的对应关系均可调整。
  7. 根据权利要求1-6任一项所述显示器背光亮度的调整方法，其特征在于，所述获取多个第一显示器对应的光照度信号，包括：周期性地获取多个所述第一显示器对应的所述光照度信号；
    根据各个所述第一显示器对应的所述光照度信号，生成全局控制信号，包括：周期性地根据各个所述第一显示器对应的所述光照度信号，生成所述全局控制信号；
    采用所述全局控制信号控制各个所述第一显示器的背光亮度，包括：根据正在使用的所述全局控制信号确定差值阈值；
    计算最新生成的所述全局控制信号和正在使用的所述全局控制全局控制信号的差值；
    判断所述差值是否小于所述差值阈值；
    若是，控制第一显示器的背景亮度不变(请您参考下面权13中的相关说明)；
    若否，采用最新生成的所述全局控制信号控制各个所述第一显示器的背光亮度。
  8. 根据权利要求1至7中任一项所述显示器背光亮度的调整方法，其特征在于，还包括第二显示器；所述第二显示器为未配置所述光照度传感器的显示器；
    所述方法还包括：采用所述全局控制信号控制所述第二显示器的背光亮度。
  9. 一种显示器背光亮度的调整装置，其特征在于，包括：
    光照度信号获取单元，用于获取多个第一显示器对应的光照度信号；所述第一显示器为配置有光照度传感器的显示器，所述光照度信号由所述光照度传感器生成；
    控制信号生成单元，用于根据各个所述第一显示器对应的所述光照度信号，生成全局控制信号；
    控制单元，用于采用所述全局控制信号控制各个所述第一显示器的背光亮度。
  10. 根据权利要求9所述显示器背光亮度的调整装置，其特征在于：所述控制信号生成单元，包括：
    自适应信号生成子单元，用于根据各个所述第一显示器对应的所述光照度信号，生成对应的自适应控制信号；
    综合信号生成子单元，用于根据各个所述自适应控制信号，生成所述全局控制信号。
  11. 根据权利要求10所述显示器背光亮度的调整装置，其特征在于，
    所述综合信号生成子单元将所述自适应控制信号的加权平均值作为所述全局控制信号；或者，
    将所述自适应控制信号的最大值或者最小值作为所述全局控制信号。
  12. 根据权利要求10或11所述显示器背光亮度的调整装置，其特征在于：所述自适应 信号生成子单元根据各个所述第一显示器对应的所述光照度信号，生成对应的自适应控制信号包括：
    根据各个所述第一显示器对应的所述光照度信号，分别选择对应的背光亮度调整曲线；
    根据各个所述光照度信号和对应的所述背光亮度调整曲线，得到对应的所述自适应控制信号。
  13. 根据权利要求9至12中任一项所述显示器背光亮度的调整装置，其特征在于，所述光照度信号获取单元周期性地获取多个所述第一显示器对应的所述光照度信号；所述控制信号生成单元根据周期性获取的所述光照度信号计算所述全局控制信号；所述控制单元包括：
    阈值确定子单元，用于根据正在使用的全局控制信号确定差值阈值；
    差值计算子单元，用于计算最新生成的所述全局控制信号和正在使用的所述全局控制全局控制信号的差值；
    判断子单元，用于判断所述差值是否小于所述差值阈值；
    控制子单元，用于在所述判断单元判定所述差值小于所述差值阈值的情况下控制第一显示器的背景亮度不变，或用于在所述判断单元判定所述差值不小于所述差值阈值的情况下采用新生成的所述全局控制信号控制各个所述第一显示器的背光亮度。
  14. 一种显示器系统，其特征在于，包括：控制器和多个第一显示器；
    所述第一显示器为配置有光照度传感器的显示器；所述光照度传感器用于生成光照度信号；
    所述控制器用于根据接收到的所述光照度信号，执行如权利要求1至8中任一项所述的显示器背光亮度的调整方法，以调整各个所述第一显示器的背光亮度。
  15. 一种车辆，其特征在于，包括如权利要求14所述的显示器系统；所述显示器系统中的各个第一显示器设置在所述车辆座舱中的不同位置处。
PCT/CN2021/121463 2020-12-04 2021-09-28 显示器背光亮度的调整方法和装置 WO2022116663A1 (zh)

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