CN105636304B - Vehicle back light brightness regulating method, apparatus and system - Google Patents

Vehicle back light brightness regulating method, apparatus and system Download PDF

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Publication number
CN105636304B
CN105636304B CN201410640440.3A CN201410640440A CN105636304B CN 105636304 B CN105636304 B CN 105636304B CN 201410640440 A CN201410640440 A CN 201410640440A CN 105636304 B CN105636304 B CN 105636304B
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brightness
instruction
adjusting
controller
brightness value
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CN105636304A (en
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雷丰科
吴乐林
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SAIC Motor Corp Ltd
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SAIC Motor Corp Ltd
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Abstract

A kind of vehicle back light brightness regulating method, apparatus and system, the brightness adjusting method include:Detect the instruction of adjusting backlight luminance;Corresponding adjusting control mark is obtained from the regulating command;Adjusting control mark is respectively sent to each display device controller, so that each display device controller is according to preset mapping relations, corresponding target brightness value is obtained respectively, and driving instruction is sent to corresponding LED drive circuit, to drive the LED to send out the light of corresponding brightness.Using the method, apparatus and system, can preferably meet the needs of user is to adjusting vehicle backlight illumination.

Description

Vehicle back light brightness regulating method, apparatus and system
Technical field
The present invention relates to technical field of automotive electronics more particularly to a kind of vehicle back light brightness regulating method, device and it is System.
Background technology
With advances in technology with the development of automobile industry, requirement of the people to the comfort of driving be higher and higher.Automobile The backlights such as the backlight illumination, such as instrument board, amusement host, switch of interior each display equipment, are best able to directly feel as user The part being subject to receives higher and higher concern.
Existing automobile backlight has brightness unadjustable and two kinds of backlights are adjusted in brightness.The uncontrollable backlight packet of brightness Two kinds are included, one is backlight illuminations to be just provided with before vehicle release, and brightness value is fixed, and user is difficult to backlight illumination It is adjusted.Another kind is that backlight illumination is divided into day mode and the two different patterns of Night, and user can be according to need It is selected.
For the adjustable automobile backlight of brightness, user can unify to adjust the brightness of interior all display equipment to same Brightness still cannot be satisfied certain demands of user although easy to adjust, such as safety etc. improves user experience.
Invention content
The embodiment of the present invention solves the problems, such as it is how to adjust vehicle backlight illumination preferably to meet user demand.
To solve the above problems, the embodiment of the present invention provides a kind of vehicle back light brightness regulating method, including:Detection is adjusted The instruction of backlight illumination;Corresponding adjusting control mark is obtained from the regulating command;The adjusting control is identified and is distinguished It is sent to each display device controller so that each display device controller obtains respectively according to preset mapping relations Corresponding target brightness value is taken, and driving instruction is sent to corresponding LED drive circuit, it is bright to drive the LED to send out correspondence The light of degree.
Optionally, the target brightness value is the dutyfactor value of pulse width modulation wave.
Optionally, the preset mapping relations are:The regulated value of the preset backlight illumination and the object brightness The mapping curve of value, the mapping curve are stored in each display device controller, the mapping curve and display equipment one One corresponds to.
Optionally, the LED drive circuit to each display equipment sends the driving comprising corresponding target brightness value and refers to It enables, drives the LED to send out the light of corresponding brightness, further include:Gradual change filter is carried out to the target brightness value in the driving instruction Wave processing.
To solve the above problems, the embodiment of the present invention additionally provides a kind of vehicle backlight illumination regulating device, including:Detection Unit, the instruction for detecting adjusting backlight luminance;First acquisition unit, for obtaining corresponding adjust from the regulating command Section control mark;Adjusting control mark is respectively sent to each display device controller by transmission unit;It is described each aobvious Show that device controller according to preset mapping relations, obtains corresponding target brightness value respectively, is sent out to corresponding LED drive circuit Driving instruction is sent, to drive the LED to send out the light of corresponding brightness.
Optionally, the vehicle backlight illumination regulating device further includes:Filter unit, for in the driving instruction Target brightness value carries out gradual change and is filtered.
The embodiment of the present invention additionally provides a kind of vehicle backlight illumination regulating system, including:Brightness regulator;Controller, The backlight illumination Regulate signal generated suitable for receiving the brightness regulator, handles the backlight illumination Regulate signal, The instruction of adjusting backlight luminance is generated, and the instruction of the adjusting backlight luminance is sent to multiple display equipment;Multiple displays Equipment is suitable for receiving the instruction for the adjusting backlight luminance that the controller is sent, from the instruction of the adjusting backlight luminance Middle acquisition adjusting control mark obtains corresponding target brightness value respectively according to preset mapping relations, and to corresponding LED Driving circuit sends driving instruction, and the LED is driven to send out the light of corresponding brightness.
Optionally, the controller includes:A/D sample circuits, the backlight illumination for being suitable for generating the brightness regulator Regulate signal is sampled, and corresponding digital signal is obtained;Signal processor, it is raw suitable for handling the digital signal At the instruction of adjusting backlight luminance;CAN transceiver, suitable for the instruction of adjusting backlight luminance is respectively sent to each display equipment Controller.
Optionally, the multiple display equipment, including:CAN transceiver is suitable for receiving the finger of the adjusting backlight luminance It enables;Memory is suitable for storing the mapping relations of each display equipment corresponding adjusting control mark and target brightness value;Processor, Suitable for obtaining adjusting control mark from the instruction of the adjusting backlight luminance, closed according to the mapping stored in the memory System, obtains corresponding target brightness value;LED drive circuit is suitable for receiving corresponding target brightness value, the LED is driven to send out The light of corresponding brightness.
Compared with prior art, the technical solution of the embodiment of the present invention has the following advantages:
After the adjusting control for getting backlight illumination identifies, each controller for showing equipment is according to preset corresponding pass System, obtains corresponding target brightness value, and LED circuit is driven to send out the light of corresponding brightness.By to preset mapping relations tune It is whole, it is identified relative to same adjusting control, the target brightness value that different display equipment obtains can be different, and different displays are set The brightness for the light that preparation goes out is also just different, therefore can meet the needs of user is to vehicle backlight illumination.
Further, it is filtered by carrying out gradual change to the target brightness value in driving instruction, slows down brightness value from current Brightness value changes to the speed of target brightness value, and the case where avoiding brightness change excessive velocities and leading to human eye temporary blindness is sent out It is raw.
Description of the drawings
Fig. 1 is a kind of flow chart of vehicle back light brightness regulating method in the embodiment of the present invention;
Fig. 2 is a kind of structural schematic diagram of vehicle backlight illumination regulating device in the embodiment of the present invention;
Fig. 3 is a kind of structural schematic diagram of vehicle backlight illumination regulating system in the embodiment of the present invention;
Fig. 4 is the mapping of corresponding adjustment the control mark and target brightness value of a kind of display equipment in the embodiment of the present invention Curve.
Specific implementation mode
Existing automobile backlight has brightness unadjustable and two kinds of backlights are adjusted in brightness.For the adjustable automobile of brightness Backlight, user can unify to adjust interior all brightness for showing equipment to same brightness.
Currently, the adjustable automobile backlight of brightness is applied more generally in each vehicle.But since interior each display is set Standby color is usually inconsistent, for example, A shows that equipment is green, B shows that equipment is red, and is distributed areas different in the car Domain, human eye differ the brightness impression of the different colours of different zones.When the backlight light intensity of a certain display equipment of user demand For certain value when, other light for showing equipment and sending out respective strengths value yet may not needed to, therefore existing brightness is adjustable The automobile backlight of section can not be met the needs of users.
In embodiments of the present invention, after the adjusting control for getting backlight illumination identifies, each controller for showing equipment According to preset correspondence, corresponding target brightness value is obtained, and LED circuit is driven to send out the light of corresponding brightness.By right The adjustment of preset mapping relations, identifies relative to same adjusting control, and the target brightness value of different display equipment acquisition can be with The brightness of difference, the light that different display equipment is sent out is also just different, so as to meet need of the user to vehicle backlight illumination It asks.
It is understandable to enable the above objects, features, and advantages of the embodiment of the present invention to become apparent, it is right below in conjunction with the accompanying drawings Specific embodiments of the present invention are described in detail.
Step S101 detects the instruction of adjusting backlight luminance.
In specific implementation, user can be adjusted interior backlight illumination by preset brightness regulator.
Brightness regulator can be adjusting knob, can be by being correspondingly turned up or turning down clockwise or counterclockwise Backlight illumination.Brightness regulator may be the touch screen on console, and user is by brightness regulation interface to interior backlight Brightness is adjusted.Brightness regulator can also be other devices, as long as can be adjusted to interior backlight illumination, this Place is not done to be repeated one by one.
When user is adjusted interior backlight illumination by brightness regulation component, vehicle control device can detect tune The instruction of backlight illumination is saved, step S102 is executed.
Step S102 obtains corresponding adjusting control mark from the regulating command.
In embodiments of the present invention, adjusting control mark can be specific adjusting control value.Adjusting control value can be The value that user is selected by rotary light adjustment knob can also be the value that user is selected by touch screen.For example, user's rotary light adjustment Knob, after rotation terminates, the corresponding value of light-control knob selected is 50, then adjusting control value is 50.
After getting adjusting control mark, controller local area network (Controller Area can be passed through Network, CAN) adjusting control mark is sent to each display device controller by network, execute step S103.
Adjusting control mark is sent to each display device controller so that each display by step S103 Device controller obtains corresponding target brightness value respectively according to preset mapping relations.
In embodiments of the present invention, preset mapping relations can be between the regulated value and target brightness value of backlight illumination Mapping curve, or the regulated value of backlight illumination and the mapping table of target brightness value.In an embodiment of the present invention, in advance If mapping relations be backlight illumination regulated value and target brightness value between mapping curve.
In an embodiment of the present invention, mapping curve can be stored in the controller of display equipment.It is shown for different Show that equipment, preset mapping curve may be the same or different.Therefore, for different mapping curves, identical adjusting control System identifies corresponding target brightness value and may be the same or different.User can set different displays according to personal like It is standby that corresponding mapping curve is set, that is, show that equipment is corresponded with mapping curve.
In an embodiment of the present invention, user can by human-computer interaction interface (Human Machine Interface, HMI) the corresponding mapping curve of display equipment is configured.For example, user is bright to the backlight of interior each display equipment by HMI Degree is configured, into " backlight illumination adjusting " interface, according to personal like, successively to instrument, amusement host, switch key, The corresponding mapping curve of head-up display (Head Up Display, HUD) is configured.
After being provided with, on HMI determination the mapping curve of setting is preserved, by CAN network by preservation Mapping curve is respectively sent in the corresponding controller for showing equipment, and the controller of each display equipment preserves corresponding mapping song Line.
For example, user is configured the mapping curve for entertaining host on HMI, after being provided with, user, which determines, to be preserved Mapping curve is sent to the controller of amusement host by CAN network by mapping curve, HMI, and the controller for entertaining host preserves Mapping curve.
After receiving adjusting control value, each display equipment can reflecting according to adjusting control value and target brightness value Penetrate relationship, you can obtain corresponding target brightness value.Since each display equipment and mapping curve correspond, then relative to same One adjusting control value, the target brightness value that each display device controller is got can be different.For example, relative to same Adjusting control value, the target brightness value that instrument is got is M, and it is N to entertain the target brightness value that host is got.
In an embodiment of the present invention, target brightness value is that the pulse width of certain dutyfactor value modulates (Pulse Width Modulation, PWM) wave, for example, the PWM wave that it is 80% that target brightness value, which is duty ratio,.
Step S104 sends driving instruction to corresponding LED drive circuit, the LED is driven to send out the light of corresponding brightness.
In an embodiment of the present invention, after the controller of each display equipment gets corresponding target brightness value, you can Driving instruction is sent to corresponding light emitting diode (LED) driving circuit, driving instruction includes target brightness value.LED After driving circuit receives driving instruction, driving LED sends out the corresponding light of target brightness value.
For example, being directed to the same adjusting control value, the target brightness value that the controller of instrument is got is that duty ratio is 80% PWM wave, the target brightness value that gets of amusement host are the PWM wave that duty ratio is 70%, wherein duty ratio is 100% PWM wave is expressed as the PWM wave that display equipment can be driven to send out maximum brightness.Therefore, the controller of instrument is to instrument LED drive circuit send driving instruction, drive the LED of instrument send out brightness be maximum luminousing brightness 80% light, amusement master The controller of machine sends driving instruction to the LED drive circuit of amusement host, and it is maximum that the LED of driving amusement host, which sends out brightness, The light of light emission luminance 70%.
Step S101~S104 is described in detail below by citing.
With reference to Fig. 4, x-axis is adjusting control value, and y-axis is corresponding target brightness value.Display equipment includes instrument, amusement master Machine and HUD, user first pass through HMI and are configured to the mapping curve stored in instrument, amusement host and HUD in advance.
Wherein, broken line 401 is the corresponding mapping curve of instrument, and is stored in the controller of instrument.Broken line 402 is amusement The corresponding mapping curve of host, and be stored in the controller of amusement host.Broken line 403 is corresponding mapping curve in HUD, and It is stored in the controller of HUD.It is from Fig. 4 it is known that equal corresponding to instrument, amusement host and HUD, preset mapping curve It differs.
Light-control knob is adjusted, light-control knob is rotated to the position for being 40 to scale value, is i.e. adjusting control value is 40.Controller Backlight illumination Regulate signal is handled, the instruction of adjusting backlight luminance is generated, be respectively sent to instrument, amusement host and The controller of HUD.The controller of instrument, amusement host and HUD receives brightness adjustment control value respectively, is reflected according to preset in Fig. 4 Curve is penetrated, the target brightness value that can obtain instrument is 70, and the target brightness value for entertaining host is the target brightness value of 40, HUD It is 20.
The PWM wave that then the LED drive circuit output duty cycle of instrument is 70% so that it is most light that the LED of instrument, which is sent out, The brightness of angle value 70%.Entertain the PWM wave that the LED drive circuit output duty cycle of host is 40% so that entertain the LED of host It sends out as the brightness of maximum brightness value 40%.The PWM wave that the LED drive circuit output duty cycle of HUD is 20% so that HUD's LED sends out as the brightness of maximum brightness to 20%.
When adjusting control value is other values, the corresponding target brightness value of each display equipment can also be according in Fig. 4 Mapping curve obtains.In practical applications, for different mapping curves, the x-axis of mapping curve can be divided into different Section.For example, the x-axis of the corresponding mapping curve of instrument is divided into [0,20], [20,40], [40,100] three sections, will give pleasure to The x-axis of the corresponding mapping curve of happy host is divided into [0,20], [20,40], [40,60], [60,80], [80,100] five areas Between, the corresponding mapping curves of HUD are divided into [0,40], [40,100] two sections.When each display equipment gets adjusting After controlling value, adjusting control value section residing in respective mapping curve can be first judged.
For example, adjusting control value is a, then the section of the adjusting control value residing for a is first judged respectively, then according to preset Mapping curve, according to the linear relationship between 2 points, you can obtain corresponding target brightness value b.Calculation formula is:
Wherein, xnFor the maximum value in corresponding section, xn-1It is the minimum value in corresponding section, ynIt is xnCorresponding target is bright Angle value, yn-1It is xn-1Corresponding target brightness value.As long as obtaining adjusting control value as a result, you can according to preset mapping curve Obtain corresponding target brightness value.
For example, adjusting control value is a=50, correspond to instrument, adjusting control value is within [40,100] section, by scheming 4 it is known that xn-1=40, xn=100, yn-1=70, yn=100, respectively by xn-1、xn、yn-1、ynAnd a substitutes into above formula, it can To obtain target brightness value b=75.
As it can be seen that after the adjusting control for getting backlight illumination identifies, each controller for showing equipment is according to preset right It should be related to, obtain corresponding target brightness value, and LED circuit is driven to send out the light of corresponding brightness.By being closed to preset mapping System's adjustment, identifies relative to same adjusting control, and the target brightness value that different display equipment obtains can be different, so as to Meets the needs of user is to vehicle backlight illumination.
In embodiments of the present invention, may exist following situation:The current brightness value of instrument is maximum luminousing brightness 20%, user carries out rotation process to light-control knob, and the target brightness value that instrument is got is the 80% of maximum luminousing brightness.Such as Fruit directly adjusts the brightness of instrument to the 80% of maximum luminousing brightness from the 20% of maximum luminousing brightness, since LED luminance becomes Change too fast, the case where brightness change of moment may result in eyes of user temporary blindness occurs, and there are security risks.
For the above situation, in an embodiment of the present invention, gradual change filter is carried out to the target brightness value in driving instruction Wave processing, is adjusted the brightness value of instrument with certain step-length so that the variation of the brightness value of instrument is not the change of moment Change, but is gradually target brightness value from the variation of present intensity value.
For example, the current brightness value of instrument is the 20% of maximum luminousing brightness, user carries out rotation process to light-control knob Afterwards, the target brightness value that instrument is got is the 80% of maximum luminousing brightness.Target brightness value in driving instruction is carried out gradually Change is filtered, and after being filtered by gradual change, the brightness value change procedure of instrument is:20%~30%, 30%~ 40% ..., 70%~80%.
It can be seen that being filtered by carrying out gradual change to the target brightness value in driving instruction, slow down brightness value from working as Preceding brightness value changes to the speed of target brightness value, and the case where avoiding brightness change excessive velocities and leading to human eye temporary blindness is sent out It is raw.
The embodiment of the present invention additionally provides a kind of vehicle backlight illumination regulating device 20, with reference to Fig. 2, including:Detection unit 201, acquiring unit 202, transmission unit 203, wherein:
Detection unit 201, the instruction for receiving adjusting backlight luminance;
Acquiring unit 202, for obtaining corresponding adjusting control mark from the regulating command;
Transmission unit 203, for adjusting control mark to be respectively sent to each display device controller;It is described each A display device controller obtains corresponding target brightness value respectively according to preset mapping relations, and electricity is driven to corresponding LED Road sends driving instruction, to drive the LED to send out the light of corresponding brightness.
In specific implementation, the vehicle backlight illumination regulating device 20 can also include:Filter unit 204, for pair Target brightness value in the driving instruction carries out gradual change and is filtered, and the filter unit 204 can be arranged in each display In the controller of equipment.
The embodiment of the present invention additionally provides a kind of vehicle backlight illumination regulating system 30, including:Brightness regulator 301, control Device 302 processed and multiple display equipment 303, wherein:
Controller 302 can be vehicle control device, be electrically connected with brightness regulator 301.When user passes through brightness regulator When 301 pairs of interior backlight illuminations are adjusted, controller 302 receives the backlight illumination Regulate signal that brightness regulator 301 generates, Backlight illumination Regulate signal is handled, generates the instruction of adjusting backlight luminance, and sends at most a display equipment 303.
In an embodiment of the present invention, it can be provided with slide rheostat in brightness regulator 301, is become by controlling sliding The resistance value for hindering device, selects corresponding brightness control value.Controller 302 includes analog/digital (A/D) sample circuit 3021, signal processing Device 3022 and CAN transceiver 3023 pass through A/D sample circuits when brightness regulator 301 generates backlight illumination Regulate signal 3021 pairs of backlight illumination Regulate signals sample, and obtain corresponding digital signal.Digital signal is input to signal processor 3022, the instruction of adjusting backlight luminance is generated, is respectively sent to the instruction of adjusting backlight luminance respectively by CAN transceiver 3023 A display equipment 303.
Multiple display equipment 303 are suitable for receiving the instruction for the adjusting backlight luminance that the controller is sent, from the adjusting Adjusting control mark is obtained in the instruction of backlight illumination, according to preset mapping relations, obtains corresponding target brightness value respectively, And driving instruction is sent to corresponding LED drive circuit, drive the LED to send out the light of corresponding brightness.
In an embodiment of the present invention, display equipment 303 may include:CAN transceiver 3031, memory 3032, processing Device 3033, LED drive circuit 3034 and LED3035.Wherein, CAN transceiver 3031 is suitable for receiving the tune that controller 302 is sent Save the instruction of backlight illumination.The instruction of adjusting backlight luminance of the processor 3033 to receiving is handled, and obtains adjusting control Mark obtains corresponding target according to the mapping relations of the adjusting control mark and target brightness value that are stored in memory 3032 Brightness value.LED drive circuit 3034 sends out the light of corresponding brightness according to corresponding target brightness value, driving LED3035.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage Medium may include:ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Any those skilled in the art are not departing from this It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute Subject to the range of restriction.

Claims (8)

1. a kind of vehicle back light brightness regulating method, the vehicle includes multiple display equipment, which is characterized in that including:
Detect the instruction of adjusting backlight luminance;
Corresponding adjusting control mark is obtained from the regulating command;
Adjusting control mark is respectively sent to each display device controller so that each display device controller According to preset mapping relations, corresponding target brightness value is obtained respectively, and send driving to corresponding LED drive circuit and refer to It enables, to drive the LED to send out the light of corresponding brightness;
The preset mapping relations are:The regulated value of the preset backlight illumination is bent with the mapping of the target brightness value Line, the mapping curve are stored in each display device controller, and the mapping curve is corresponded with display equipment, different The corresponding mapping curve of the display equipment it is different.
2. vehicle back light brightness regulating method as described in claim 1, which is characterized in that the target brightness value is that pulse is wide Spend the dutyfactor value of modulating wave.
3. vehicle back light brightness regulating method as described in claim 1, which is characterized in that described to each display equipment LED drive circuit sends the driving instruction for including corresponding target brightness value, drives the LED to send out the light of corresponding brightness, also wraps It includes:Gradual change is carried out to the target brightness value in the driving instruction to be filtered.
4. a kind of vehicle backlight illumination regulating device, which is characterized in that including:
Detection unit, the instruction for detecting adjusting backlight luminance;
First acquisition unit, for obtaining corresponding adjusting control mark from the regulating command;
Adjusting control mark is respectively sent to each display device controller by transmission unit;Each display equipment Controller obtains corresponding target brightness value respectively according to preset mapping relations, sends and drives to corresponding LED drive circuit Instruction, to drive the LED to send out the light of corresponding brightness;The preset mapping relations are:The preset backlight illumination The mapping curve of regulated value and the target brightness value, the mapping curve is stored in each display device controller, described Mapping curve is corresponded with display equipment.
5. vehicle backlight illumination regulating device as claimed in claim 4, which is characterized in that further include:Filter unit, for pair Target brightness value in the driving instruction carries out gradual change and is filtered.
6. a kind of vehicle backlight illumination regulating system, which is characterized in that including:
Brightness regulator;
Controller is suitable for receiving the backlight illumination Regulate signal that the brightness regulator generates, adjusts and believe to the backlight illumination It number is handled, generates the instruction of adjusting backlight luminance, and the instruction of the adjusting backlight luminance is sent to multiple displays and is set It is standby;
Multiple display equipment are suitable for receiving the instruction for the adjusting backlight luminance that the controller is sent, and are carried on the back from the adjusting Adjusting control mark is obtained in the instruction of brightness, according to preset mapping relations, obtains corresponding target brightness value respectively, and Driving instruction is sent to corresponding LED drive circuit, the LED is driven to send out the light of corresponding brightness;The preset mapping is closed System is:The mapping curve of the regulated value and the target brightness value of the preset backlight illumination, the mapping curve are stored in In each display device controller, the mapping curve is corresponded with display equipment.
7. vehicle backlight illumination regulating system as claimed in claim 6, which is characterized in that the controller includes:
A/D sample circuits, the backlight illumination Regulate signal suitable for being generated to the brightness regulator are sampled, are obtained corresponding Digital signal;
Signal processor generates the instruction of adjusting backlight luminance suitable for handling the digital signal;
CAN transceiver, suitable for the instruction of adjusting backlight luminance to be respectively sent to the controller of each display equipment.
8. vehicle backlight illumination regulating system as claimed in claim 7, which is characterized in that the multiple display equipment, including:
CAN transceiver is suitable for receiving the instruction of the adjusting backlight luminance;
Memory is suitable for storing the mapping relations of each display equipment corresponding adjusting control mark and target brightness value;Processor, Suitable for obtaining adjusting control mark from the instruction of the adjusting backlight luminance, closed according to the mapping stored in the memory System, obtains corresponding target brightness value;
LED drive circuit is suitable for receiving corresponding target brightness value, the LED is driven to send out the light of corresponding brightness.
CN201410640440.3A 2014-11-13 2014-11-13 Vehicle back light brightness regulating method, apparatus and system Active CN105636304B (en)

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CN107323339A (en) * 2017-02-13 2017-11-07 问众智能信息科技(北京)有限公司 The method and apparatus of intelligent back vision mirror LED brightness Multistage Control
CN106804087B (en) * 2017-02-28 2019-08-13 惠州华阳通用电子有限公司 A kind of automatic light modulating method of inter-vehicle information system
CN111312178A (en) * 2018-12-11 2020-06-19 上海欧菲智能车联科技有限公司 Backlight adjusting method and related equipment
CN110379374B (en) * 2019-06-18 2020-11-06 惠州市德赛西威汽车电子股份有限公司 Vehicle-mounted display screen brightness slowly-changing device and method
CN110969830A (en) * 2019-11-29 2020-04-07 安徽江淮汽车集团股份有限公司 Method and device for adjusting backlight of whole automobile and storage medium

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