CN109473067A - A kind of back light brightness regulating method, device and display equipment - Google Patents
A kind of back light brightness regulating method, device and display equipment Download PDFInfo
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- CN109473067A CN109473067A CN201811523769.6A CN201811523769A CN109473067A CN 109473067 A CN109473067 A CN 109473067A CN 201811523769 A CN201811523769 A CN 201811523769A CN 109473067 A CN109473067 A CN 109473067A
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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
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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
- G09G3/3413—Details of control of colour illumination sources
Abstract
This application discloses a kind of back light brightness regulating method, device and display equipment to determine target backlight luminance ident value according to the remote command this method comprises: obtaining remote command；According to the difference and preset backlight adjusting number between current backlight brightness ident value and the corresponding pulse width modulation (PWM) value of the target backlight luminance ident value, determine the step-length that single backlight is adjusted between the current backlight brightness ident value and the target backlight luminance ident value, wherein, PWM value indicates the duty ratio size of pwm signal, and pwm signal is used to control the supply voltage of backlight module；Backlight module supply voltage is adjusted according to the step-length of difference and single backlight adjusting between the current backlight brightness ident value and the corresponding pulse width modulation (PWM) value of the target backlight luminance ident value.The flickering in backlight illumination adjustment process can be reduced by the application, improves user experience.
Description
Technical field
This application involves electronic technology field more particularly to a kind of back light brightness regulating methods, device and display equipment.
Background technique
A kind of form of the backlight as illumination is commonly used for the offer module of screen intensity.Backlight is from side or behind
Irradiation is widely used in the electronic equipments such as television equipment, computer equipment to increase the illuminance in low lighting environment.
User can according to demand be adjusted backlight illumination, in backlight illumination adjustment process when using television equipment
Brightness flicker degree can directly affect the usage experience of user.The basic principle that backlight illumination is adjusted is to pass through pulse width tune
(Pulse Width Modulation, PWM) Signal Regulation backlight module supply voltage is made, reduces the method for voltage by increasing
Realize the brightness regulation of backlight.User by change user interface (User Interface, UI) backlight illumination ident value into
Row backlight is adjusted, and really corresponds to the PWM value of equal proportion, and the corresponding relationship of backlight illumination ident value and PWM value is set by TV
Standby system software is determined according to display image quality.
In the prior art, the corresponding relationship of backlight illumination ident value and PWM value is divided to two kinds, and one is backlight illuminations to adjust model
Enclose it is larger, such as backlight illumination ident value be 1~100, corresponding PWM value be 0%~100% voltage duty cycle, such feelings
Condition is completed primary most bright adjust to most dark backlight illumination and is takeed a long time, and the back between adjacent backlight illumination ident value
The variation of brightness light and shade is unobvious, affects user experience；Another kind is that backlight illumination adjustable range is smaller, such as backlight is bright
Spending ident value is 1~30, the voltage duty cycle that corresponding PWM value is 0%~100%, the adjacent backlight illumination mark of such situation
Backlight illumination light and shade variation between value is obvious, and complete it is primary it is most bright to adjust the time needed to most dark backlight illumination shorter,
But each variation flickering that will cause backlight illumination is stronger, affects user experience.
Summary of the invention
The embodiment of the present application provides a kind of back light brightness regulating method, device and display equipment, to reduce backlight illumination
Flickering in adjustment process, to improve user experience.
In a first aspect, providing a kind of back light brightness regulating method, comprising: remote command is obtained, according to the remote controler
It instructs and determines target backlight luminance ident value；Distinguished according to current backlight brightness ident value and the target backlight luminance ident value
Difference and preset backlight between corresponding pulse width modulation (PWM) value adjust number, determine the current backlight brightness
The step-length that single backlight is adjusted between ident value and the target backlight luminance ident value, wherein PWM value indicates pwm signal
Duty ratio size, pwm signal are used to control the supply voltage of backlight module；According to the current backlight brightness ident value with it is described
What difference and the single backlight between the corresponding pulse width modulation (PWM) value of target backlight luminance ident value were adjusted
Step-length adjusts backlight module supply voltage.
Optionally, described to be respectively corresponded according to the current backlight brightness ident value and the target backlight luminance ident value
Pulse width modulation (PWM) value between difference and the single backlight adjust step-length adjust backlight module supply voltage,
It include: according to current backlight brightness ident value pulse width modulation corresponding with the target backlight luminance ident value
The step-length that difference and the single backlight between PWM value are adjusted determines that backlight adjusts number, and it is small that the backlight adjusts number
In or equal to the preset backlight adjusting number；According to the step-length that the single backlight is adjusted, the single back of n times is continuously performed
Light is adjusted, and N is equal to the backlight and adjusts number.
Optionally, it is backlight module in the processing delay according to the remote command that the preset backlight, which adjusts number,
What the maximal regulated number of supply voltage determined.
Optionally, the determining target backlight luminance ident value adjusts main thread by backlight illumination and executes；The backlight is bright
Degree adjusting main thread determines after target backlight luminance ident value, further includes: the interim thread that creation backlight illumination is adjusted, it is described
Interim thread and the main thread are parallel；The determination current backlight brightness ident value and the target backlight luminance identify
The step-length that single backlight is adjusted between value, and identified according to the current backlight brightness ident value and the target backlight luminance
It is worth the step-length that difference and the single backlight between corresponding pulse width modulation (PWM) value are adjusted and adjusts backlight module
Supply voltage is executed by the interim thread.
Optionally, after the interim thread that the creation backlight illumination is adjusted, further includes: the backlight illumination adjusts main line
The current backlight brightness ident value and the target backlight luminance ident value are sent to the interim thread by journey；Alternatively, institute
Backlight illumination adjusting main thread is stated to respectively correspond the current backlight brightness ident value and the target backlight luminance ident value
PWM value be sent to the interim thread.
Optionally, described to be respectively corresponded according to the current backlight brightness ident value and the target backlight luminance ident value
Pulse width modulation (PWM) value between difference and the single backlight adjust step-length adjust backlight module supply voltage it
Afterwards, further includes: the interim thread is voluntarily destroyed.
Optionally, the acquisition remote command determines target backlight luminance ident value according to the remote command, packet
It includes: if being cached with multiple continuous remote commands, according to the multiple continuous remote command, determining that execution is described more
Target backlight luminance ident value after a continuous remote command.
Second aspect provides a kind of backlight illumination regulating device, comprising: target backlight luminance determination unit: obtaining remote control
Device instruction, determines target backlight luminance ident value according to the remote command；Backlight adjusts step size determination unit: being used for basis
Difference between current backlight brightness ident value and the corresponding pulse width modulation (PWM) value of the target backlight luminance ident value
Value and preset backlight adjust number, determine the current backlight brightness ident value and the target backlight luminance ident value it
Between the step-length that adjusts of single backlight, wherein PWM value indicates the duty ratio size of pwm signal, and pwm signal is for controlling backlight mould
The supply voltage of group；Adjust unit: for according to the current backlight brightness ident value and the target backlight luminance ident value
The step-length that difference and the single backlight between corresponding pulse width modulation (PWM) value are adjusted adjusts backlight module and supplies
Piezoelectric voltage.
The third aspect provides a kind of liquid crystal display, comprising: processor, memory；The memory, for storing
Computer instruction；The processor, for running the computer instruction to realize method described in any one of first aspect.
Fourth aspect provides a kind of computer readable storage medium, and the storage medium is stored with computer instruction, described
Method described in any one of first aspect is realized when computer instruction is executed by processor.
In above-described embodiment of the application, target backlight luminance ident value is determined according to remote command first, and according to
The difference of current backlight brightness ident value PWM value corresponding with target backlight luminance ident value and preset backlight are adjusted
Number determines the step-length that single backlight is adjusted between current backlight brightness ident value and target backlight luminance ident value, then root
According to the difference between current backlight brightness ident value and the corresponding pulse width modulation (PWM) value of target backlight luminance ident value
And the step-length that single backlight is adjusted carries out backlight adjusting, so that the corresponding backlight module of current backlight brightness ident value be powered
Voltage is gradually adjusted to the corresponding backlight module supply voltage of target backlight luminance ident value, and then can reduce backlight illumination tune
Apparent backlight flicker, improves the user experience during section.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the system architecture that the embodiment of the present application is applicable in；
Fig. 2 is the schematic diagram at smart television display backlight brightness regulation interface in the embodiment of the present application；
Fig. 3 is a kind of flow chart of back light brightness regulating method provided by the embodiments of the present application；
Fig. 4 is the Annual distribution that backlight illumination adjusts that backlight illumination is adjusted in main thread poll time in the embodiment of the present application
Figure；
Fig. 5 is a kind of structural schematic diagram of backlight illumination regulating device provided by the embodiments of the present application；
Fig. 6 is the structural schematic diagram of liquid crystal display provided by the embodiments of the present application.
Specific embodiment
The embodiment of the present application is described in detail with reference to the accompanying drawing.
Referring to Fig. 1, for the structural schematic diagram for the system architecture that the embodiment of the present application is applicable in.
As shown in Figure 1, including display equipment 101 and remote controler 102 in system architecture 100.Remote controler 102 can pass through
Wireless mode sends control instruction to display equipment 101, and display equipment 101 is configured with backlight module, which can be with
It is the display equipment that television set (such as smart television) is also possible to that other configurations have backlight module.
Remote controler 102 is a kind of wireless launcher, and user may be implemented by remote controller 102 and show equipment
101 human-computer interaction.In a kind of possible application scenarios, remote controler 102 is believed the key of user by digital coding
Breath is encoded, and emits light wave by infrared diode, infrared receiver of the light wave through showing equipment 101 is red by what is received
External signal is transformed into electric signal, and then processor is decoded, and demodulates and instructs and execute the instruction accordingly, to reach control
The purpose that display equipment 101 operates needed for completing.
Optionally, for showing that equipment 101 is smart television, can also include in system architecture 100 and smart television
The set-top box (being not shown) of connection.Set-top box is also referred to as digital video switching box, for changing into the digital signal of compression
Television content, and show on the display device.Set-top box can be built in smart television, can also be external in smart television.
The control instruction that remote controler issues is received and is decoded by set-top box, and decoded control instruction is sent to intelligent electricity by set-top box
Depending on.
Above-mentioned remote controler may also comprise other mobile subscriber equipments.The mobile subscriber equipment can be established wireless with display equipment
Communication connection is connected to display equipment by the wireless communication and sends control instruction.The mobile subscriber equipment can be intelligence
Mobile phone, tablet computer, personal digital assistant (Personal Digital Assistant, PDA), intelligent wearable device etc. are similar
Equipment.
The display operating system mounted of equipment 101 can be Android (Android) system, form (Windows) system
Or equipment supplier's self-built systems etc..The application is for showing that the type of the operating system mounted of equipment 101 does not limit specifically
System.
Based on above system framework 100, in embodiments herein, user can pass through remote controler 102 and display equipment
101 carry out human-computer interaction, and operation is adjusted to the backlight illumination in display 101 interface of equipment.
Show that equipment 101 is configured with backlight module, backlight module is that display equipment 101 provides backlighting for, and user can be with
Backlight illumination regulating command is sent by remote controler to adjust the backlight illumination of backlight module.Taking a smart TV as an example, referring to figure
2, it is the schematic diagram at smart television display backlight brightness regulation interface in the embodiment of the present application.User passes through remote controler entry of backlight
Brightness regulation interface, as shown, smart television display interface 200 shows backlight illumination adjustment interface 201, in backlight illumination
Backlight illumination bar 202 and backlight illumination ident value 203 are shown in adjustment interface 201.On backlight illumination bar 202
Configured with circular adjusting knob, it is used to indicate backlight illumination ident value, when user presses " increase " or " reduction " key of remote controler
Afterwards, in response, the adjusting knob on backlight illumination bar 202 to the right or is moved to the left, and at backlight illumination ident value 203
Displaying target backlight illumination ident value (for example the ident value can be some numerical value between 1 to 30).Back in backlight module
Brightness adjusts main thread and obtains the backlight illumination regulating command sent from remote controler 102, determines the backlight illumination regulating command
Target backlight luminance ident value and the corresponding PWM value of target backlight luminance ident value, adjust PWM change backlight module power supply
Voltage shows the adjusting of 101 backlight illumination light and shade of equipment to realize.
Show equipment 101 because of the difference of signal source, the image quality that screen is shown it is different (such as super clear image quality, SD image quality,
Smooth image quality etc.), therefore the corresponding PWM value of identical backlight illumination ident value is different.With backlight illumination ident value for 1~30, PWM value
Divide equally for being quantified as 0~255 according to digital quantity, the screen of equipment 101, which shows partially bright, backlight illumination, to be shown for super clear image quality
Ident value is that 15 corresponding PWM values are 70；The screen of equipment 101, which shows partially dark, backlight illumination mark, to be shown for smooth image quality
Value is that 15 corresponding PWM values are 190；Backlight module is bright to backlight after determining that backlight illumination ident value is 15 corresponding PWM values
Degree ident value is that corresponding PWM value does linear respectively calculating in 1~15,15~30 two sections, determines each backlight illumination mark
The corresponding PWM value of knowledge value simultaneously stores.
Due in varied situations, the corresponding PWM value of identical backlight illumination ident value may be different, i.e., two neighboring back
Difference between PWM value corresponding to brightness ident value be possible to it is smaller be also possible to it is larger, in two neighboring backlight illumination
In the biggish situation of difference between PWM value corresponding to ident value, a backlight illumination regulating command is executed, is existed apparent
Backlight illumination flashing, influences user experience.
To solve the above problems, referring in embodiment provided by the present application when user issues remote controler by remote controller
After order, target backlight luminance ident value is determined according to remote command first, and according to current backlight brightness ident value and target
Difference and preset backlight between the corresponding PWM value of backlight illumination ident value adjust number, determine that current backlight is bright
The step-length that single backlight is adjusted between ident value and target backlight luminance ident value is spent, then according to current backlight brightness ident value
The step that difference and single backlight between pulse width modulation (PWM) value corresponding with target backlight luminance ident value are adjusted
It is long to carry out backlight adjusting, so that the corresponding backlight module supply voltage of current backlight brightness ident value is gradually adjusted to target back
The corresponding backlight module supply voltage of brightness ident value, and then apparent backlight in backlight illumination adjustment process can be reduced and dodged
It is bright, it improves the user experience.
As shown in figure 3, being a kind of flow chart of back light brightness regulating method provided by the embodiments of the present application.
As shown, this method comprises:
S301: remote command is obtained, target backlight luminance ident value is determined according to remote command.
Taking a smart TV as an example, in a kind of possible scene, user enters intelligent electricity by the key of remote controller
Depending on backlight illumination adjustment interface, for the interface, the key of user's remote controller again sends remote controler to smart television
Instruction, such as user press the increasing key on remote controler and reduce key, to adjusting backlight luminance.In response, backlight illumination tune
Save displaying target backlight illumination ident value on the backlight illumination bar in interface.
S302: according between current backlight brightness ident value and the corresponding PWM value of target backlight luminance ident value
Difference and preset backlight adjust number, determine the current backlight brightness ident value and the target backlight luminance ident value
Between single backlight adjust step-length.
Specifically, PWM value indicates the duty ratio size of pwm signal, and pwm signal is used to control the power supply electricity of backlight module
Pressure controls the size variation of backlight module supply voltage by adjusting the size of pwm signal duty ratio, realizes backlight light and shade
It adjusts.According to the difference between current backlight brightness ident value and the corresponding PWM value of object brightness ident value and preset
Backlight adjust number, determine current backlight brightness ident value and the list of target backlight luminance ident value so far according to formula (1)
The step-length that secondary backlight is adjusted.
Wherein, P1Indicate the corresponding PWM value of current backlight brightness ident value, P2Indicate that target backlight luminance ident value is corresponding
PWM value, | P1-P2| indicate the PWM difference between current backlight brightness ident value and target backlight luminance ident value, N0It indicates
Preset backlight adjusts number, and y indicates the step-length that single backlight is adjusted,Expression rounds up.I.e. according to target backlight luminance
Ident value determines current backlight brightness ident value PWM value corresponding with target backlight luminance ident value, and the two subtracts each other to obtain
Corresponding PWM difference between target backlight luminance ident value and current backlight brightness ident value, by PWM difference divided by preset back
Light adjusts number, is rounded the single backlight adjusting for obtaining adjusting current backlight brightness ident value to target backlight luminance ident value
Step-length, the step-length between current backlight brightness ident value and target backlight luminance ident value single backlight adjust PWM value.
Wherein, preset backlight adjusting number by the processing delay of remote command, (believed by key on remote controler by the time delay
Number decoding it is time-consuming, the operation of the related systems such as function call time-consuming codetermines) and adjust a backlight module supply voltage
The minimal time delay supported determines jointly.For example the processing delay of remote command is 50 milliseconds, adjusts a backlight module and supplies
The minimal time delay that piezoelectric voltage is supported is 3 milliseconds, then can carry out (taking after i.e. 50/3 for 16 times in the processing delay of remote command
It is whole) adjusting of secondary backlight module supply voltage, i.e., the maximum of backlight module supply voltage is adjusted in the processing delay of remote command
Saving number is 16 times, it is contemplated that the preset backlight can be adjusted number and is set as 10 times by robustness.
S303: it is modulated according to current backlight brightness ident value pulse width corresponding with target backlight luminance ident value
The step-length that difference and single backlight between PWM value are adjusted adjusts backlight module supply voltage.
Optionally, according to current backlight brightness ident value pulse width tune corresponding with target backlight luminance ident value
The step-length that difference and single backlight between PWM value processed are adjusted determines that backlight adjusts number according to formula (2)；
Wherein, P is indicated between current backlight brightness ident value and the corresponding PWM value of target backlight luminance ident value
Difference, y indicate the step-length that single backlight is adjusted, and N indicates that backlight adjusts number,Expression rounds up.Determine single backlight
After the step-length of adjusting, according to the step-length y that the single backlight is adjusted, the single backlight for continuously performing n times is adjusted, and N is less than or equal to
Preset backlight adjusts number.
It should be noted that in practical applications, above-mentioned backlight adjust number seek in formula can be using taking upwards
It is whole, other rounding modes can also can also be used, the application is not construed as limiting this using being rounded downwards.
Specifically, the step-length adjusted according to the single backlight determined in S302 carries out backlight illumination adjusting.For example it determines
The step-length that single backlight out is adjusted is 2 (PWM values), and it is 10 that backlight, which adjusts number, then adjusts the one of main thread in backlight illumination
The adjusting that the backlight illumination of 10 hyposynchronization a length of 2 is carried out in a poll time, so that current backlight brightness gradual change is bright to target backlight
Degree, to reduce the flickering in backlight illumination change procedure, improves the usage experience of user.For another example, preset back
It is 5 that light adjusting number, which is 10, PWM difference, is carried on the back for 1, PWM difference divided by single then being rounded and obtaining the step-length that single backlight is adjusted
The step-length that light is adjusted obtains backlight and adjusts number to be 5 times, then only needs in the poll time that backlight illumination adjusts main thread
It is carried out continuously the adjusting of the backlight illumination of 5 hyposynchronization a length of 1.
Continuous multiple remote commands may be cached in a kind of possible situation, in instruction queue.For example, if user
It operates continuously the increasing key of remote controler or long-pressing remote controler or reduces key, continuous multiple remote controlers can be generated in a short time and referred to
It enables.In response to this, optionally, in S301, backlight illumination adjusts main thread can be according to continuous multiple remote controls of caching
Device instruction determines the target backlight luminance ident value after continuous multiple remote commands are performed.Such as current backlight brightness scale
Knowledge value is 1, and it is 200 milliseconds that backlight illumination, which adjusts main thread and carries out the poll time of backlight illumination detection, remote command
Processing delay be 50 milliseconds, the increasing key on 200 milliseconds of remote controlers of user's long-pressing executes backlight illumination ident value and increases operation,
The backlight illumination ident value that user interface is shown has sent 4 remote commands from 1 value added 5 in 200 milliseconds.Backlight
Brightness regulation main thread obtains the remote command that backlight illumination ident value is 2 first, determines that target backlight luminance ident value is
2, carry out corresponding backlight illumination adjusting；After the completion of adjusting, backlight illumination adjusts main thread and determines remaining 3 remote commands
In the remote command of newest acquisition be target backlight luminance ident value, that is, determine that target backlight luminance ident value is 5, then carry out
Corresponding backlight illumination is adjusted.
The backlight illumination of smart television adjusts operation and is usually executed by the corresponding function module in operating system, specifically
Ground can adjust main thread by backlight illumination to execute.Smart television can be cached to instruction team after receiving remote command
Column, backlight illumination, which adjusts main thread, remote command is obtained from instruction queue according to setting period (such as every 200 milliseconds)
And the remote command got is responded.In S301, backlight illumination adjusts main thread and gets from instruction queue
After the remote command, target backlight luminance ident value is determined according to the remote command.
Optionally, after S301, the interim thread that creation backlight illumination is adjusted, the interim thread and main thread are parallel,
The interim thread is mainly used for realizing that the gradual change of backlight illumination is adjusted.Specifically, backlight illumination adjusts main thread and works as determining
Preceding backlight illumination ident value and target backlight luminance ident value are sent to interim thread or backlight illumination adjusting main thread will
Determining current backlight brightness ident value and the corresponding PWM value of target backlight luminance ident value is sent to interim thread.
After interim thread receives 2 PWM values, correlation function is called first, calculates the difference between current PWM value and target PWM；
Interim thread adjusts number further according to preset backlight and calls correlation function, calculates the step-length that single backlight is adjusted；Finally, interim
Thread passes through hardware according to the step-length of difference and the adjusting of single backlight between calculated current PWM value and target PWM value
Step-length is arranged into backlight module supply voltage driving function, realizes the adjusting of backlight illumination.
Optionally, after interim thread completes backlight illumination adjusting, which is voluntarily destroyed, in this way without occupying
Extra resource, and do not need backlight illumination and adjust main thread obstruction waiting, realize the concurrent working of two threads.
Below to adjust the minimal time delay that a backlight module supply voltage is supported as 3 milliseconds, preset backlight is adjusted
For number is 10 times, the process of interim thread adjusting backlight luminance is specifically described.
Referring to fig. 4, for backlight illumination in the embodiment of the present application adjust that backlight illumination in main thread poll time adjusts when
Between distribution map.As shown, adjusted in 200 milliseconds of main thread poll time in backlight illumination, respectively at the 15th millisecond and the
The interim thread that backlight illumination is adjusted, i.e. user's adjusting backlight luminance 2 times in 200 milliseconds are created at 110 milliseconds.Specifically,
Interim thread is adjusted according to the remote command creation backlight illumination received at the 15th millisecond；In the 15th~25 millisecond of phase
Between, interim thread receives backlight illumination and adjusts the current backlight brightness ident value and target backlight luminance mark that main thread is sent
Value or current backlight brightness ident value and the corresponding PWM value of target backlight luminance ident value, and determine current backlight
The step-length that PWM difference and single backlight between brightness ident value and target backlight luminance ident value are adjusted；The 25th~
During 46 milliseconds, interim thread is arranged by the step-length that hardware driving function adjusts the single backlight determined to backlight module
In supply voltage, which is repeated 7 times and (is determined by the step-length that PWM difference and single backlight are adjusted)；In the 46th~56 millisecond of phase
Between be the interim thread preset waiting time, if receiving remote command within the time, it is bright that interim thread executes backlight
Degree is adjusted；Otherwise, interim thread is voluntarily destroyed.It is that interim thread executes 10 backlight illuminations adjustings during 110th~160 millisecond
Annual distribution, similar with operation performed during the 15th~56 millisecond, details are not described herein.
Since the poll time that backlight illumination adjusts main thread cannot be decreased or increased arbitrarily, therefore may in poll time
Cause the PWM difference between current backlight brightness ident value and target backlight luminance ident value larger, for example backlight illumination is adjusted
It is operation that 1 adjusting is 4 to backlight illumination ident value that main thread, which is needed to be implemented in poll time from backlight illumination ident value, this
Sample will cause apparent flickering in backlight illumination adjustment process, influence the usage experience of user.Creation and backlight illumination tune
The parallel interim thread of main thread is saved, in main thread poll time, which adjusts step-length according to single backlight and carry out
Multiple backlight illumination adjusts the smooth change, it can be achieved that backlight illumination light and shade, while having carried out reasonable utilization to system resource,
The flickering in backlight illumination adjustment process is reduced, is improved the user experience.
Based on the same technical idea, the embodiment of the present application also provides a kind of backlight illumination regulating device, which can
Execute the process of method as shown in Figure 3.
Fig. 5 is a kind of structural schematic diagram of backlight illumination regulating device provided by the embodiments of the present application.The equipment division is realized
The process that the backlight illumination that aforementioned material benefit provides is adjusted.
As shown, the device includes: target backlight luminance determination unit 501, backlight adjusts step size determination unit 502,
And adjust unit 503.
Target backlight luminance determination unit 501: remote command is obtained, target backlight is determined according to the remote command
Brightness ident value.
Backlight adjusts step size determination unit 502: for according to current backlight brightness ident value and the target backlight luminance
Difference and preset backlight between the corresponding pulse width modulation (PWM) value of ident value adjust number, work as described in determination
The step-length that single backlight is adjusted between preceding backlight illumination ident value and the target backlight luminance ident value, wherein PWM value indicates
The duty ratio size of pwm signal, pwm signal are used to control the supply voltage of backlight module.
Adjust unit 503: for according to the current backlight brightness ident value and the target backlight luminance ident value point
The step-length that difference and the single backlight between not corresponding pulse width modulation (PWM) value are adjusted adjusts backlight module power supply
Voltage.
Based on the same technical idea, the embodiment of the present application also provides a kind of liquid crystal display, the liquid crystal display
Process performed by Fig. 5 in previous embodiment can be achieved.
Fig. 6 shows the structural schematic diagram of liquid crystal display 600 provided by the embodiments of the present application, that is, it is bright to show backlight
Spend another structural schematic diagram of regulating device 500.As shown in fig.6, the liquid crystal display 600 includes processor 601, storage
Device 602.Wherein, processor 601 or controller.The processor 601 is configured as that terminal is supported to execute foregoing schemes
The function being related to.Memory 602 saves the necessary program instruction of terminal and data for coupling with processor 601.Wherein,
Processor 601 is connected with memory 602, and for storing instruction, the processor 601 is for executing the memory for the memory 602
The instruction of 602 storages, to complete the step of client device executes corresponding function in the above method.
It is real with the application involved in backlight illumination regulating device 500 and liquid crystal display 600 in the embodiment of the present application
The relevant concept of technical solution of example offer is provided, explains and is described in detail and other steps refer to preceding method or other implementations
The description as described in these contents in example, is not repeated herein.
It should be noted that the above-mentioned processor being related to of the embodiment of the present application can be central processing unit (central
Processing unit, CPU), general processor, digital signal processor (digital signal processor, DSP),
Specific integrated circuit (application-specific integrated circuit, ASIC), field programmable gate array
It is (field programmable gate array, FPGA) or other programmable logic device, transistor logic, hard
Part component or any combination thereof.It, which may be implemented or executes, combines various illustrative logic sides described in teachings herein
Frame, module and circuit.Processor is also possible to realize the combination of computing function, such as includes one or more microprocessors group
It closes, DSP and the combination of microprocessor etc..Wherein, the memory can integrate in the processor, can also with it is described
Processor is provided separately.
Based on the same technical idea, the embodiment of the present application also provides a kind of computer readable storage mediums.Computer
Readable storage medium storing program for executing is stored with computer executable instructions, and computer executable instructions are held for executing computer in Fig. 3
Capable process.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. a kind of back light brightness regulating method characterized by comprising
Remote command is obtained, target backlight luminance ident value is determined according to the remote command；
According to current backlight brightness ident value pulse width modulation (PWM) value corresponding with the target backlight luminance ident value
Between difference and preset backlight adjust number, determine the current backlight brightness ident value and the target backlight luminance
The step-length that single backlight is adjusted between ident value, wherein PWM value indicates the duty ratio size of pwm signal, and pwm signal is for controlling
The supply voltage of backlight module processed；
According to current backlight brightness ident value pulse width modulation corresponding with the target backlight luminance ident value
The step-length that difference and the single backlight between PWM value are adjusted adjusts backlight module supply voltage.
2. the method as described in claim 1, which is characterized in that described according to the current backlight brightness ident value and the mesh
Mark the step that difference and the single backlight between the corresponding pulse width modulation (PWM) value of backlight illumination ident value are adjusted
It is long to adjust backlight module supply voltage, comprising:
According to current backlight brightness ident value pulse width modulation corresponding with the target backlight luminance ident value
The step-length that difference and the single backlight between PWM value are adjusted determines that backlight adjusts number, and it is small that the backlight adjusts number
In or equal to the preset backlight adjusting number；
According to the step-length that the single backlight is adjusted, the single backlight for continuously performing n times is adjusted, and N is equal to backlight adjusting time
Number.
3. the method as described in claim 1, which is characterized in that it is according to the remote controler that the preset backlight, which adjusts number,
The maximal regulated number of backlight module supply voltage determines in the processing delay of instruction.
4. method according to any one of claims 1 to 3, which is characterized in that the determining target backlight luminance ident value
Main thread is adjusted by backlight illumination to execute；
The backlight illumination adjusting main thread determines after target backlight luminance ident value, further includes: creation backlight illumination is adjusted
Interim thread, the interim thread and the main thread are parallel；
Single backlight is adjusted between the determination current backlight brightness ident value and the target backlight luminance ident value
Step-length, and according to current backlight brightness ident value pulse width corresponding with the target backlight luminance ident value
The step-length that difference and the single backlight between modulation (PWM) value are adjusted adjusts backlight module supply voltage, by described interim
Thread executes.
5. method as claimed in claim 4, which is characterized in that after the interim thread that the creation backlight illumination is adjusted, also
Include:
The backlight illumination adjusts main thread and sends out the current backlight brightness ident value and the target backlight luminance ident value
Give the interim thread；Alternatively,
The backlight illumination adjusts main thread for the current backlight brightness ident value and the target backlight luminance ident value point
Not corresponding PWM value is sent to the interim thread.
6. method as claimed in claim 4, which is characterized in that described according to the current backlight brightness ident value and the mesh
Mark the step that difference and the single backlight between the corresponding pulse width modulation (PWM) value of backlight illumination ident value are adjusted
After long adjusting backlight module supply voltage, further includes:
The interim thread is voluntarily destroyed.
7. method according to any one of claims 1 to 3, which is characterized in that the acquisition remote command, according to described
Remote command determines target backlight luminance ident value, comprising:
If being cached with multiple continuous remote commands, according to the multiple continuous remote command, determine described in executing
Target backlight luminance ident value after multiple continuous remote commands.
8. a kind of backlight illumination regulating device characterized by comprising
Target backlight luminance determination unit: remote command is obtained, target backlight luminance mark is determined according to the remote command
Knowledge value；
Backlight adjusts step size determination unit: for according to current backlight brightness ident value and the target backlight luminance ident value point
Difference and preset backlight between not corresponding pulse width modulation (PWM) value adjust number, determine that the current backlight is bright
Spend the step-length that single backlight is adjusted between ident value and the target backlight luminance ident value, wherein PWM value indicates pwm signal
Duty ratio size, pwm signal is used to control the supply voltage of backlight module；
Adjust unit: for corresponding with the target backlight luminance ident value according to the current backlight brightness ident value
The step-length that difference and the single backlight between pulse width modulation (PWM) value are adjusted adjusts backlight module supply voltage.
9. a kind of liquid crystal display characterized by comprising processor, memory；
The memory, for storing computer instruction；
The processor, for running the computer instruction to realize the method as described in any one of claims 1 to 7.
10. a kind of computer readable storage medium, which is characterized in that the storage medium is stored with computer instruction, the meter
The instruction of calculation machine realizes method described in any one of claims 1 to 7 when being executed by processor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523769.6A CN109473067A (en) | 2018-12-13 | 2018-12-13 | A kind of back light brightness regulating method, device and display equipment |
| PCT/CN2019/111264 WO2020119240A1 (en) | 2018-12-13 | 2019-10-15 | Backlight brightness adjustment method and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523769.6A CN109473067A (en) | 2018-12-13 | 2018-12-13 | A kind of back light brightness regulating method, device and display equipment |
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| CN113301682B (en) * | 2021-04-28 | 2023-02-14 | 惠州华阳通用电子有限公司 | LED brightness gradient control method and system |
| CN113326029A (en) * | 2021-05-13 | 2021-08-31 | 深圳恒之源技术股份有限公司 | LED lamp brightness adjusting method and system and computer readable storage medium |
| CN113326029B (en) * | 2021-05-13 | 2024-03-22 | 深圳恒之源技术股份有限公司 | LED lamp brightness adjusting method, system and computer readable storage medium |
| CN114049754A (en) * | 2021-12-06 | 2022-02-15 | 青岛鼎信通讯股份有限公司 | Temporary collection task mechanism based on electric energy collection terminal of transformer substation |
| CN114639359A (en) * | 2022-03-31 | 2022-06-17 | 上海创功通讯技术有限公司 | Method and device for adjusting backlight brightness |
| CN115148161A (en) * | 2022-07-21 | 2022-10-04 | 远峰科技股份有限公司 | Automatic backlight adjusting method, device, equipment and storage medium |
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