CN107833568A - A kind of screen luminance adjustment method, device and display terminal - Google Patents
A kind of screen luminance adjustment method, device and display terminal Download PDFInfo
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- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
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Abstract
This application provides a kind of screen luminance adjustment method, device and display terminal.Method includes, according to default brightness regulation information, exporting pwm signal corresponding with target screen brightness value；If the error of the detected value of current screen brightness screen intensity detected value corresponding with brightness regulation information is more than the first predetermined threshold value, the dutycycle of pwm signal is adjusted, until the two error is less than or equal to the first predetermined threshold value.This method, using default brightness regulation information, exports corresponding pwm signal using specific screen brightness value as regulation target, and brightness regulation information is the standard information verified by external equipment, is advantageous to improve the accuracy of screen intensity regulation.In addition, the application can be fed back by error, the dutycycle of pwm signal is further adjusted, the regulation step-length of pwm signal is no longer dependent on the regulation step-length of screen intensity in this programme, can be more accurate to adjust screen brightness value during error transfer factor.
Description
Technical field
The application is related to display field, more particularly to a kind of screen luminance adjustment method, device and display terminal.
Background technology
LCD Panel has many advantages, such as color rendition degree is high, saves, be radiationless, extensively should be obtained in each field
With.Under normal circumstances, user can by the screen intensity of the mode adjustable liquid crystal display display screen such as physical button, screen touch-control, with
Preferably adapt to many-sided demands such as environmental change, personal like.
PWM (English full name：Pulse Width Modulation, pulse width modulation) it is to be believed using the numeral of processor
Number output is widely used in from measurement, communicated to power control come a kind of very effective technology that analog circuit is adjusted
In many fields of system and conversion.Therefore, the pwm signal for being used as display screen brightness control signal can be adjusted by processor
Dutycycle, control or adjustable liquid crystal display display screen screen intensity.The regulation step-length of pwm signal dutycycle is generally bright with screen
The regulation step-length of degree is consistent, and therefore, processor is according to the regulation step number of screen intensity, you can exports the PWM letters of corresponding dutycycle
Number, so as to control the brightness of LCD Panel to change.Fig. 1 is that a kind of common LCD screen luminance adjusts schematic diagram.
As shown in Figure 1, the regulation step-length of the screen intensity of LCD Panel is 1%, and the regulation step-length of pwm signal is also set accordingly
For 1%.In Fig. 1, the original pattern brightness of LCD Panel is 50, and the screen intensity after adjustment is 75, and adjustment step number is 25
The dutycycle of pwm signal need to only be increased 25% by step, now, processor, you can match the increment of screen intensity.
But the electronic component inside LCD Panel is during long-term use, inevitable appearance property
It can decay, and the change of physical characteristic so that when processor exports the pwm signal to match with brightness regulation step number, usually
Can not accurate adjustable liquid crystal display display screen screen intensity.In screen intensity regulative mode as shown in Fig. 1, processor output
When dutycycle is 75% pwm signal, screen may only reach 60% even lower brightness, cause target screen intensity and reality
Border screen intensity produces larger deviation, and the accuracy of brightness regulation is relatively low.
The content of the invention
This application provides a kind of screen luminance adjustment method, device and display terminal, to solve existing way brightness tune
The problem of accuracy of section is low.
In a first aspect, this application provides a kind of screen luminance adjustment method, methods described includes：
According to default brightness regulation information, pwm signal corresponding with target screen brightness value, the brightness regulation are exported
Information includes multiple default screen brightness values, and the dutycycle of pwm signal corresponding to each default screen brightness value and
Screen intensity detected value；
Obtain current screen brightness detected value, and in the brightness regulation information with the target screen brightness value pair
The screen intensity detected value answered；
If the detected value of the current screen brightness and target screen brightness value pair described in the brightness regulation information
The error for the screen intensity detected value answered is more than the first predetermined threshold value, then adjusts accounting for for the pwm signal with the first regulation step-length
Empty ratio, until the detected value screen corresponding with target screen brightness value described in the brightness regulation information of current screen brightness
The error of brightness detected value is less than or equal to the first predetermined threshold value.
Second aspect, present invention also provides a kind of screen brightness regulating device, including：Processor, memory and communication
Interface, the processor, the memory are connected with the communication interface communication bus；
The communication interface, for receiving and sending signal；
The memory, for store program codes；
The processor, for reading the program code stored in the memory, and perform described in any of the above-described
Method.
The third aspect, present invention also provides a kind of display terminal, including above-mentioned device, in addition to：
Optical sensor, the processing is reported to for detecting current screen brightness value, and by current screen brightness detected value
Device.
The application's has the beneficial effect that：
This application provides a kind of screen luminance adjustment method, device and display terminal, wherein method is included according to default
Brightness regulation information, export corresponding with target screen brightness value pwm signal, the brightness regulation information includes multiple preset
Screen brightness value, and the dutycycle and screen intensity detected value of pwm signal corresponding to each screen brightness value；Obtain
The detected value of current screen brightness；If the detected value of the current screen brightness and corresponding screen in the brightness regulation information
The error of curtain brightness detected value is more than the first predetermined threshold value, then the dutycycle of the pwm signal is adjusted with the first step-length, until working as
The error of the detected value of forth screen brightness screen intensity detected value corresponding with the brightness regulation information is less than or equal to
First predetermined threshold value.This method is using specific screen brightness value as regulation target, using default brightness regulation information, output with
Pwm signal corresponding to target screen brightness value, brightness regulation information are the standard information verified by external equipment, can be one
Determine to improve the accuracy that screen intensity is adjusted in degree.In addition, the application can pass through value (the current screen brightness of screen intrinsic brilliance
Detected value) error feedback, further adjust the dutycycle of pwm signal, in this programme, the regulation step-length of pwm signal is no longer
Dependent on the regulation step-length of screen intensity, therefore, can more finely, accurately, flexibly be adjusted during error transfer factor
The dutycycle of pwm signal, so as to more accurate regulation screen brightness value, target screen intensity is set to deviate with actual screen brightness
It is smaller, preferably meet brightness needs.The screen luminance adjustment method of the application offer is provided below in conjunction with the accompanying drawings.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that a kind of common LCD screen luminance adjusts schematic diagram；
Fig. 2 is a kind of method flow diagram for screen luminance adjustment method that the embodiment of the present application provides；
Fig. 3 is the method flow diagram for the step S400 that the embodiment of the present application provides；
Fig. 4 is the method flow diagram for another screen luminance adjustment method that the embodiment of the present application provides；
Fig. 5 is the schematic diagram that a kind of screen intensity that the embodiment of the present application provides adjusts section；
Fig. 6 is the method flow diagram for the third screen luminance adjustment method that the embodiment of the present application provides；
Fig. 7 is a kind of structural representation for screen brightness regulating device that the embodiment of the present application provides；
Fig. 8 is a kind of structural representation for display terminal that the embodiment of the present application provides.
Embodiment
In order to solve the relatively low technical problem of accuracy that existing way adjusts to screen intensity, present applicant proposes one kind
Screen luminance adjustment method, applied to display terminals such as LCD Panels.Its core concept is：This method is with specific screen
Brightness value is regulation target, using default brightness regulation information, exports pwm signal corresponding with target screen brightness value, bright
Degree regulation information is the standard information verified by external equipment, can improve the accurate of screen intensity regulation to a certain extent
Property.In addition, the application can be fed back by the error of screen intrinsic brilliance value, the dutycycle of pwm signal, this programme are further adjusted
In, the regulation step-length of pwm signal is no longer dependent on the regulation step-length of screen intensity, therefore, can be during error transfer factor, more
For the dutycycle of fine, accurate, flexible adjustment pwm signal, screen brightness value is adjusted so as to more accurate.With reference to attached
Figure elaborates the screen luminance adjustment method of the application offer.
Referring to Fig. 2, a kind of method flow diagram of screen luminance adjustment method of the embodiment of the present application offer is shown.By scheming
2 is visible, and methods described comprises the following steps：
Step S400：According to default brightness regulation information, pwm signal corresponding with target screen brightness value is exported.
In the present embodiment, user can be adjusted current screen brightness regulation to desired target by corollary apparatus such as buttons
Brightness, after the regulating command of user's transmission is received, the regulating command generally includes to adjust step number processor, will be wrapped in instruction
Proportionally transformation is target screen brightness value for the target regulation brightness contained.
Brightness regulation information includes multiple default screen brightness values, and each default screen brightness value corresponds to
Pwm signal dutycycle and screen intensity detected value., can be in the auxiliary of outside illumination detection device before display terminal dispatches from the factory
Under, between screen maximum brightness value and minimum luminance value, multiple default screen brightness values are determined, and be recorded in each screen
Under brightness value, the dutycycle of the pwm signal of processor output, and the screen intensity detected value detected by optical sensor,
So that processor is according to above screen brightness value and the corresponding relation of pwm signal dutycycle, determine that target screen brightness value is corresponding
Pwm signal dutycycle, according to optical sensor gather screen intensity detected value, feedback regulation error.Above corresponding informance
Default brightness regulation information as described in step S400, wherein, the number of default screen brightness value can be according to display
The actual demand setting of terminal, the number of default screen brightness value is more, and the adjustment accuracy of screen intensity is higher.
Step S500：Obtain current screen brightness detected value, and in the brightness regulation information with the target screen
Screen intensity detected value corresponding to curtain brightness value.
The present embodiment can be according to optical sensor to screen intensity testing result, come determine the first of screen intensity detection
Value.Optical sensor detects the first inspection of screen intensity after processor exports pwm signal corresponding with target screen brightness value
Measured value, and the first detected value of the screen intensity detected is fed back into processor, so as to processor according to screen intensity
One detected value intrinsic brilliance value corresponding with brightness regulation information carries out error feedback.
Step S600：If the detected value of the current screen brightness and corresponding screen in the brightness regulation information are bright
The error of degree detected value is more than the first predetermined threshold value, then adjusts the dutycycle of the pwm signal with the first regulation step-length, until working as
The error of the detected value of forth screen brightness screen intensity detected value corresponding with the brightness regulation information is less than or equal to
First predetermined threshold value.
Although the corresponding relation of the dutycycle of default screen brightness value and pwm signal is by outer in brightness regulation information
The standard information of portion's equipment verification, still, due to reasons such as the aging of electronic component, the changes of physical characteristic, it can still lead
Cause that deviation is occurred according to the first detected value of screen intensity.Therefore, the present embodiment continues to adjust PWM by way of error feedback
The dutycycle of signal, until the error of the first detected value of screen intensity is less than or equal to the first predetermined threshold value, to obtain more
For accurate screen intensity.
The first predetermined threshold value can be set according to actual error demand in the present embodiment, for medical diagnosis equally accurate requirement compared with
High application field, can suitably reduce the first predetermined threshold value, not be very high application field for required precision, can be pre- by first
If threshold value is arranged to a more wide in range scope, such as 1%-3%.
In the present embodiment, the dutycycle of the pwm signal of processor output only relies upon target screen brightness value and brightness is adjusted
Information is saved, the regulation step-length of pwm signal dutycycle and the regulation step-length of screen intensity are not directly dependent upon, not by screen intensity
The restriction of step-length is adjusted, therefore, the present embodiment can be by changing the regulation step-length of pwm signal dutycycle, more flexibly, accurately
Regulation screen intensity.The bit of the degree of regulation (minimal adjustment step-length) and processor output pwm signal of pwm signal has
Close, the register of processor output pwm signal is nbit, then the adjusting range of the register is 0- (2n- 1) backlight illumination, is worked as
Adjusting range from 0-100% when, be 1/2 by the minimum adjusting step of the adjustable pwm signal of the register of the nbitn。
For example, during processor output 10bit pwm signal, the minimum adjusting step of the dutycycle of pwm signal is 1/1024, i.e., every time
The brightness of adjustment is the 1/1024 of high-high brightness.The first default step-length in the present embodiment can be according to the first of the screen intensity
The error of detected value intrinsic brilliance value corresponding with the brightness regulation information is set, can be appropriate if error is larger
The first default step-length is increased, to improve regulated efficiency, if error is smaller, the first default step-length can be suitably reduced, be adjusted with improving
Whole precision.It can be seen that the present embodiment can further increase the accurate of screen intensity regulation by changing the regulation step-length of pwm signal
Property.
Due to the default screen brightness value limited amount included in brightness regulation information, when the regulation step-length of screen intensity
When smaller, between maximum screen value and minimum screen brightness value, existing adjustable screen brightness value is more, it is difficult to ensures
Corresponding default screen brightness value be present in each target screen brightness value.When target screen brightness value Non-precondition
When screen brightness value is corresponding, using the proportionate relationship of target screen brightness value and default screen brightness value, it is determined that treating defeated
The dutycycle of the pwm signal gone out.
Referring to Fig. 3, the step S400 of the embodiment of the present application offer method flow diagram is shown.As seen from Figure 3, step
S400 also comprises the following steps：
Step S401：Detect in default brightness regulation information and whether include target screen brightness value, if described default
Brightness regulation information in include the target screen brightness value, then perform step S402；If the default brightness regulation
Do not include the target screen brightness value in information, then perform step S403.
Step S402：Export pwm signal corresponding with the target screen brightness value in brightness regulation information.
Step S403：Obtain in the brightness regulation information with the target screen brightness value closest to default screen it is bright
Angle value, according to it is described closest to default screen brightness value and the target screen brightness value proportionate relationship, output and mesh
Mark pwm signal corresponding to screen brightness value.
Similar with the acquisition modes of pwm signal, the present embodiment can also pass through brightness regulation acquisition of information and the target
Screen intensity detected value corresponding to screen brightness value, specific obtaining step are as follows：
If including the target screen brightness value in the default brightness regulation information, brightness regulation information is obtained
In screen intensity detected value corresponding with the target screen brightness value；
If not including the target screen brightness value in the default brightness regulation information, obtain the brightness and adjust
Save information in the target screen brightness value closest to default screen brightness value, according to it is described closest to default screen it is bright
Angle value and the proportionate relationship of the target screen brightness value, obtain screen intensity detection corresponding with the target screen brightness value
Value.
The screen luminance adjustment method proposed with reference to two instantiations to the present embodiment elaborates.
To realize the accurate regulation of target screen brightness value, it is necessary to pre-establish brightness regulation information.Brightness regulation information
Concrete form such as following table.
Table 1：Brightness regulation information
In the present embodiment, D0=0%, L0(L0=0cd/m2) be the display terminal minimum luminance value；Dn=100%, Ln
(L0=2000cd/m2) be the display terminal maximum brightness value；La(La=1000cd/m2) and Lb(Lb=1400cd/m2) it is to be somebody's turn to do
Two brightness values between display terminal maximum brightness value and minimum luminance value, with LaAnd LbCorresponding DaAnd DbRespectively
50.1% and 65.0%；With LaAnd LbCorresponding SaAnd SbRespectively 1003cd/m2And 1395cd/m2。
In the present embodiment, the regulation step-length of screen intensity is 100cd/m2, i.e. original pattern brightness value and target screen be bright
The difference of angle value, minimum 100cd/m2.In the present embodiment, target screen brightness value L that processor obtains according to regulating commandx
For 1000cd/m2, processor, which detects, includes target screen brightness value 1000cd/m in default brightness regulation information2, then control
The drive circuit of display screen directly export corresponding to dutycycle be 50.1% pwm signal can (Dx=Da).Brightness regulation is believed
Each screen brightness value in breath precisely verifies by external equipment, can improve the tune of pwm signal to a certain extent
Save precision.
In order to further improve the precision of screen intensity regulation, the present embodiment is believed in the PWM that output duty cycle is 50.1%
After number, the present intensity of screen is detected by optical sensor, and according to formulaJudge current screen
Whether brightness value meets that screen intensity regulation requires.In the present embodiment, the detected value S of current screen brightnessxFor 1005cd/m2, its
Error is 0.2%, less than default error delta S (Δ S=1%), therefore, as the PWM that processor output duty cycle is 50.1%
During signal, meet the accuracy requirement of default brightness regulation.
In the application other embodiment, target screen brightness value L that processor obtains according to regulating commandx' it is 1200cd/
m2, processor detects target screen brightness value 1200cd/m2Positioned at LaAnd LbBetween, and target screen brightness value Lx' and La
And LbDifference it is identical, then can choose LaAnd LbMiddle any point as closest to default screen brightness value, it is and pre- according to this
If the proportionate relationship of screen brightness value and target screen brightness value, export pwm signal corresponding with target screen brightness value.This reality
Apply in example, choose LbAs the reference screen brightness value of target screen brightness value, and according to Dx'=DbLx'/LbIt is calculated and mesh
Mark the dutycycle D of pwm signal corresponding to screen brightness valuex'=55.7%.Processor is according to result of calculation output duty cycle
55.7% pwm signal, and the present intensity of screen is detected by optical sensor, according to formulaJudge whether current screen brightness value meets that screen intensity regulation requires.In the present embodiment, current screen
The detected value S of curtain brightnessx' it is 1211cd/m2, error 1.3%.More than default error delta S (Δ S=1%), therefore, work as place
When managing the pwm signal that device output duty cycle is 55.7%, it is impossible to meet the accuracy requirement of default brightness regulation, it is necessary to pass through
The dutycycle of pwm signal is reduced, to the further regulation of screen intensity.
Specifically, when processor output 10bit pwm signal, the minimum adjusting step of the dutycycle of pwm signal is 1/
1024, i.e., the dutycycle of the pwm signal at least adjusted every time is the 1/1024 of maximum duty cycle., can be according to this in the present embodiment
Section of the secondary screen luminance errors where with the difference of default error, set the adjusting step of the dutycycle of pwm signal.Such as
This error and default error difference are 0-0.5%, then the adjusting step of the dutycycle of pwm signal are set as into 0.1%, this
Secondary error and default error difference are 0.5%-2%, then the adjusting step of the dutycycle of pwm signal are set as into 0.3%, this
Secondary error is more than 2% with default error difference, then the adjusting step of the dutycycle of pwm signal is set as into 0.5%.When
So, the setting in above section is only an example in the present embodiment, in the application other embodiment, can be entered according to actual conditions
Row section and the adjustment of dutycycle adjusting step.
In the present embodiment, due to this error (1.3%) relative to default error delta S (1%) deviation be 0.3%,
Then the adjusting step of the dutycycle of pwm signal should be 0.2%, i.e. the dutycycle of the pwm signal of output can be adjusted to by processor
55.5%.After the dutycycle of processor adjustment pwm signal, by optical sensor to the screen brightness value after the adjustment of screen
Detected, detected value Sx" it is 1206cd/m2, according to above-mentioned formula, the screen intensity error after this adjustment being calculated
For 0.9%, less than default error delta S (Δ S=1%), meet the accuracy requirement of default brightness regulation, processor not followed by
The dutycycle of continuous adjustment pwm signal.
In the application scenarios of reality, the frequency of use of some brightness values is relatively low on display screen, in order to reference to actual field
The frequency of use of screen intensity in scape, improves the regulated efficiency of screen intensity, and the present embodiment, will according to the frequency of use of brightness value
Screen intensity region division is at least two different brightness regulation sections of brightness adjustment step-length, so that processor can be to very
Quick regulation is carried out with brightness section, improves the regulation efficiency of screen intensity.
Referring to Fig. 4, the method flow diagram of another screen luminance adjustment method of the embodiment of the present application offer is shown.By
Fig. 4 is visible, and methods described also comprises the following steps：
Step S100：It is at least two brightness regulation sections by screen intensity region division.
Step S200：At least two brightness regulations section is subjected to decile, obtains corresponding screen intensity regulation step
Long, regulation step-length corresponding at least two regulations section is different.
Step S300：According to brightness regulation step number, and the regulation step-length in each brightness regulation section, it is bright to obtain target screen
Angle value.
Referring to Fig. 5, a kind of screen intensity for showing the embodiment of the present application offer adjusts the schematic diagram in section.Can by Fig. 5
See, screen intensity is divided into three different brightness regulation sections, the first brightness regulation section [0, L by the present embodimentj] division
For E equal portions, the second brightness regulation section [Lj, LK] it is divided into F equal portions, the 3rd brightness regulation section [LK, LN] G equal portions are divided into,
Corresponding, the first brightness regulation section [0, Lj] brightness regulation step-length be Lj/E；Second brightness regulation section [Lj, LK]
Brightness regulation step-length is (Lk-Lj)/F；3rd brightness regulation section [LK, LN] brightness regulation step-length be (Ln-Lk)/G.Wherein,
First brightness regulation section [0, Lj] and the 3rd brightness regulation section [LK, LN] frequency of use it is higher, the second brightness regulation section
[Lj, LK] frequency of use it is relatively low, therefore, the first brightness regulation section [0, Lj] and the 3rd brightness regulation section [LK, LN] it is bright
Degree regulation step-length is less than the second brightness regulation section [Lj, LK] brightness regulation step-length, i.e. Lj/ E and (Ln-Lk)/G should be less than (Lk-
Lj)/F, Lj/ E and (Ln-Lk)/G size, it can be determined according to frequency of use or otherwise actual demand.
The screen intensity regulating command that processor receives includes brightness regulation step number, according to current screen brightness value,
Brightness regulation step number, and the regulation step-length in each brightness regulation section, you can obtain target screen brightness value.As seen from Figure 5, when
Forth screen brightness value is located at the first brightness regulation section, if the desired target screen brightness value of user is located at the 3rd brightness regulation area
Between, then the present embodiment provide adjusting method, can be under relatively little of step number, quick regulation screen intensity so that screen is bright
Degree moves quickly through the second brightness regulation section, into the 3rd brightness regulation section where target screen brightness value, in such manner, it is possible to
Regulation efficiency of the processor to screen intensity is saved, meanwhile, facilitate user to carry out fast velocity modulation to the screen intensity in non-conventional section
Section, embodied so as to improve user.
In above-mentioned brightness regulation section, the brightness regulation step-length in the higher conventional section of brightness frequency of use is smaller, adjustable
The density of luminance point is higher.Because brightness regulation information is by the standard information of external equipment verification, with brightness regulation information
In the degree of regulation of target brightness value that matches of default screen brightness value it is higher, therefore, in order to coordinate above-mentioned brightness regulation
The design concept in section, and screen intensity more can be accurately adjusted, screen brightness value can be set in brightness regulation information
The higher information section of density, section is often used with corresponding above-mentioned brightness.
In the application other embodiment, brightness regulation information is also divided at least two information sections accordingly, it is described extremely
The density of the screen brightness value included in few two information sections is different.Specifically, the brightness regulation small with regulation step-length
The density of the screen brightness value included in the corresponding information section in section is high；It is relative with the brightness regulation section that regulation step-length is big
The density of the screen brightness value included in the information section answered is low.In the present embodiment, the i.e. affiliated information of density of screen brightness value
In section, the number and maximum screen brightness value of screen brightness value and the ratio of minimum screen brightness value difference.
With reference to table 1, the brightness regulation information shown in table 1 can be divided into three information sections by the present embodiment, wherein, L0-Li
It is divided into first information section, Li-LbIt is divided into the second information section, Lb-LnIt is divided into the 3rd information section.For above-mentioned reality
The brightness regulation section applied in example is corresponding, in the present embodiment, the screen brightness value in first information section and the 3rd information section
Density it is larger, the density of the screen brightness value in the second information section is smaller, i.e. (i-1)/(Li-L0) and (b-i)/(Lb-Li) should
More than (n-b)/(Ln-Lb)。
For the ease of application of the display terminal in multiple different scenes, the scope in screen intensity regulation section can be according to reality
Border situation revised.Referring to Fig. 6, the method stream of the third screen luminance adjustment method of the embodiment of the present application offer is shown
Cheng Tu.Between step S100 and step S200, this method also includes：
Step S1001：The adjust instruction of the brightness regulation interval endpoint value is received, the adjust instruction includes described
The destination end point value in brightness regulation section.
Step S1002：According to default brightness regulation information, pwm signal corresponding with the destination end point value is exported；
Step S1003：Obtain the detected value of current screen brightness；
Step S1004：If the detected value of current screen brightness and corresponding screen intensity in the brightness regulation information
The error of detected value is more than the second predetermined threshold value, then with the dutycycle of the second default step-length adjustment pwm signal, until current screen
It is pre- that the error of the detected value of brightness screen intensity detected value corresponding with the brightness regulation information is less than or equal to second
If threshold value.
In the application, according to specific application scenarios and demand, the first predetermined threshold value and the second predetermined threshold value can be same
One predetermined threshold value, or different predetermined threshold values；First default step-length and the second default step-length can also be identical or not
Together.The method of adjustment of brightness regulation interval endpoint value in the present embodiment, can be more accurate by means of brightness regulation information
Brightness regulation section is adjusted, specific adjustment mode is similar with the method for adjustment of screen brightness value in above-described embodiment with effect,
Here excessive discussion is not done.
In addition, in the embodiment of the present application, it can also include step display, specifically：By at least two brightness regulations area
Between endpoint value, and the detected value of the current screen brightness shows on the display screen, is easy to user according to specific screen
Screen intensity needed for curtain brightness value regulation, and each brightness regulation is adjusted according to the endpoint value in specific brightness regulation section
The coverage in section.
Fig. 7 is a kind of structural representation for screen brightness regulating device that the embodiment of the present application provides.As shown in fig. 7, should
Screen brightness regulating device 700, its structure may include：At least one processor (processor) 701, internal memory (memory)
702nd, peripheral interface (peripheral interface) 703, input/output subsystem (I/O subsystem) 704,
Power circuit 705 and communication line 706.
In the figure 7, arrow represents to carry out the communication and data transmission between the inscape of computer system, and it can profit
With high-speed serial bus (high-speed serial bus), parallel bus (parallel bus), storage area network
(SAN, Storage Area Network) and/or other appropriate communication technologys and realize.
Internal memory 702 may include operating system 712 and screen intensity regulation routine 722.For example, internal memory 702 may include at a high speed
Random access memory (high-speed random access memory), disk, static RAM
(SPAM), dynamic random access memory (DRAM), read-only storage (ROM), flash memory or non-voltile memory.Internal memory 702 can
Store the program coding for operating system 712 and screen intensity regulation routine 722, that is to say, that may include that screen intensity is adjusted
Software module, instruction set architecture needed for the action of device 700 or a variety of data outside it.Now, processor 701 or periphery
The access of other controllers of the grade of equipment interface 706 and internal memory 702 can be controlled by processor 701.
Peripheral interface 703 can be by the input of screen brightness regulating device 700 and/or output ancillary equipment and processor
701 and internal memory 702 be combined.Also, input/output subsystem 704 can be by a variety of input/output ancillary equipment and ancillary equipment
Interface 706 is combined.For example, input/output subsystem 704 may include display screen, keyboard, mouse, printer or according to need
It is used for the controller for being combined the ancillary equipment such as camera, various sensors with peripheral interface 703.According to opposite side
Face, input/output periphery can be also combined without input/output subsystem 704 with peripheral interface 703.
Power circuit 705 can be to all or part of supply electric power of the circuit element of terminal device.For example, power circuit
705 may include such as more than one power supply, charging system, the power failure monitor of electric power management system, battery or exchange (AC)
Circuit (power failure detection circuit), power converter or inverter, power state marker character are used for
Electric power generation, management, other any circuit elements of distribution.
Communication line 706 can be communicated using at least one interface with other computer systems, such as with remote control system
System is communicated.
Processor 701 can perform screen intensity by implementing the software module being stored in internal memory 702 or instruction set architecture
The multiple functions and processing data of adjusting means 700.That is, processor 701 by perform basic arithmetic, logic and
The input/output calculation of computer system, may be configured as handling the order of computer program.Processor 701 is structured to hold
The method of the screen intensity regulation of row above-described embodiment.
Fig. 8 is a kind of structural representation for display terminal that the embodiment of the present application provides.As shown in figure 8, the present embodiment carries
The display terminal of confession includes screen brightness regulating device 700, in addition to：Optical sensor 800, for detecting current screen brightness
Value, and the screen brightness value under brightness regulation section space aim endpoint value, and by current screen brightness detected value, and destination end
Screen intensity detected value under point value reports to the processor 701.In addition, display terminal also includes display screen 900, it is used for
The endpoint value in the regulation of display at least two section, and the detected value of current screen brightness.Wrapped specifically, including display screen 900
Include OSD (English full name：On Screen Display, on-screen menu) generation module 901, OSD generation modules 901 being capable of basis
The brightness value that processor 701 is sent draws corresponding OSD figures.
In the specific implementation, the present invention also provides a kind of computer-readable storage medium, wherein, the computer-readable storage medium can store
There is program, the program may include the part or all of step in each embodiment of method of calling provided by the invention when performing.Institute
The storage medium stated can be magnetic disc, CD, read-only memory (English：Read-only memory, referred to as：ROM) or with
Machine storage memory (English：Random access memory, referred to as：RAM) etc..
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
The mode of general hardware platform realize.Based on such understanding, the technical scheme in the embodiment of the present invention substantially or
Say that the part to be contributed to prior art can be embodied in the form of software product, the computer software product can be deposited
Storage is in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are causing a computer equipment (can be with
Be personal computer, server, either network equipment etc.) perform some part institutes of each embodiment of the present invention or embodiment
The method stated.
In this specification between each embodiment identical similar part mutually referring to.Implement especially for device
For example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring in embodiment of the method
Explanation.Invention described above embodiment is not intended to limit the scope of the present invention..
Claims (10)
1. a kind of screen luminance adjustment method, it is characterised in that methods described includes：
According to default brightness regulation information, pwm signal corresponding with target screen brightness value, the brightness regulation information are exported
Including multiple default screen brightness values, and the dutycycle and screen of pwm signal corresponding with each default screen brightness value
Curtain brightness detected value；
Obtain current screen brightness detected value, and in the brightness regulation information it is corresponding with the target screen brightness value
Screen intensity detected value；
If the detected value of the current screen brightness is corresponding with target screen brightness value described in the brightness regulation information
The error of the screen intensity detected value is more than the first predetermined threshold value, then adjusts accounting for for the pwm signal with the first regulation step-length
Empty ratio, until the detected value screen corresponding with target screen brightness value described in the brightness regulation information of current screen brightness
The error of brightness detected value is less than or equal to the first predetermined threshold value.
2. screen luminance adjustment method according to claim 1, it is characterised in that described to be believed according to default brightness regulation
Breath, exporting pwm signal corresponding with target screen brightness value includes：
Detect in default brightness regulation information and whether include the target screen brightness value；
If including the target screen brightness value in the default brightness regulation information, the brightness regulation information is exported
In pwm signal corresponding with the target screen brightness value；
If not including the target screen brightness value in the default brightness regulation information, the brightness regulation letter is obtained
In breath with the target screen brightness value closest to default screen brightness value, according to it is described closest to default screen brightness value
With the proportionate relationship of the target screen brightness value, pwm signal corresponding with the target screen brightness value is exported.
3. screen luminance adjustment method according to claim 1, it is characterised in that the inspection for obtaining current screen brightness
Screen intensity detected value corresponding with the target screen brightness value includes in measured value and the brightness regulation information：
If including the target screen brightness value in the default brightness regulation information, obtain brightness regulation information in
Screen intensity detected value corresponding to the target screen brightness value；
If not including the target screen brightness value in the default brightness regulation information, the brightness regulation letter is obtained
In breath with the target screen brightness value closest to default screen brightness value, according to it is described closest to default screen brightness value
With the proportionate relationship of the target screen brightness value, screen intensity detected value corresponding with the target screen brightness value is obtained.
4. screen luminance adjustment method according to claim 1, it is characterised in that methods described also includes：
The detected value of current screen brightness is shown on the display screen.
5. according to the screen luminance adjustment method any one of claim 1-4, it is characterised in that according to default bright
Degree regulation information, before exporting pwm signal corresponding with target screen brightness value, methods described also includes：
It is at least two brightness regulation sections by screen intensity region division, is adjusted corresponding at least two brightness regulations section
It is different to save step-length；Correspondingly,
The brightness regulation information includes at least two information sections, and what is included at least two information section is described default
The density of screen brightness value is different.
6. screen luminance adjustment method according to claim 5, it is characterised in that methods described also includes：
The adjust instruction of the brightness regulation interval endpoint value is received, the adjust instruction includes the brightness regulation section
Destination end point value；
According to default brightness regulation information, pwm signal corresponding with the destination end point value is exported；
Obtain the detected value of current screen brightness, and screen corresponding with the destination end point value in the brightness regulation information
Brightness detected value；
If the detected value of current screen brightness and screen corresponding with the destination end point value in the brightness regulation information are bright
The error of degree detected value is more than the first predetermined threshold value, then adjusts the dutycycle of the pwm signal with the second regulation step-length, until working as
The detected value of forth screen brightness and screen intensity detected value corresponding with the destination end point value in the brightness regulation information
Error is less than or equal to the second predetermined threshold value.
7. screen luminance adjustment method according to claim 6, it is characterised in that methods described also includes：
The endpoint value at least two brightness regulations section is shown on the display screen.
A kind of 8. screen brightness regulating device, it is characterised in that including：Processor, memory and communication interface, the processing
Device, the memory are connected with the communication interface communication bus；
The communication interface, for receiving and sending signal；
The memory, for store program codes and brightness regulation information；
The processor, for reading the program code stored in the memory, and perform as any in claim 1 to 7
Method described in.
A kind of 9. display terminal, it is characterised in that including device as claimed in claim 8, in addition to：
Optical sensor, processor is reported to for detecting current screen brightness value, and by current screen brightness detected value.
10. display terminal according to claim 9, it is characterised in that also include：
Display screen, for showing the endpoint value at least two regulation sections, and/or the detected value of current screen brightness.
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| CN109219197A (en) * | 2018-10-19 | 2019-01-15 | 北京经纬恒润科技有限公司 | A kind of method and device of control light variation |
| CN110798669A (en) * | 2019-11-08 | 2020-02-14 | 漳州市东方拓宇信息科技有限公司 | Method for automatically adjusting brightness of projector based on video source |
| CN110933814A (en) * | 2019-12-31 | 2020-03-27 | 大连海事大学 | Self-adaptive adjustment method for LED illuminating lamp of underwater robot |
| CN111261129A (en) * | 2020-03-23 | 2020-06-09 | 北京奇艺世纪科技有限公司 | Screen brightness control method and device, electronic equipment and storage medium |
| CN111724735A (en) * | 2020-07-22 | 2020-09-29 | 京东方科技集团股份有限公司 | Driving voltage adjusting method and display device |
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| CN114241980A (en) * | 2021-12-17 | 2022-03-25 | 重庆惠科金渝光电科技有限公司 | Drive chip, control method and display panel |
| CN115376440A (en) * | 2022-07-29 | 2022-11-22 | 西安诺瓦星云科技股份有限公司 | Display screen brightness uniformity correction method and device and display equipment |
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| CN114241980A (en) * | 2021-12-17 | 2022-03-25 | 重庆惠科金渝光电科技有限公司 | Drive chip, control method and display panel |
| CN115376440A (en) * | 2022-07-29 | 2022-11-22 | 西安诺瓦星云科技股份有限公司 | Display screen brightness uniformity correction method and device and display equipment |
| CN116052617A (en) * | 2023-03-29 | 2023-05-02 | 南京芯驰半导体科技有限公司 | Screen brightness control system, method, device, equipment and storage medium |
| CN116052617B (en) * | 2023-03-29 | 2023-06-27 | 南京芯驰半导体科技有限公司 | Screen brightness control system, method, device, equipment and storage medium |
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Address after: 266555, No. 218, Bay Road, Qingdao economic and Technological Development Zone, Shandong Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555, No. 218, Bay Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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