CN106448578A - Display screen back light control method, display screen back light control device and computer equipment - Google Patents
Display screen back light control method, display screen back light control device and computer equipment Download PDFInfo
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- CN106448578A CN106448578A CN201611198366.XA CN201611198366A CN106448578A CN 106448578 A CN106448578 A CN 106448578A CN 201611198366 A CN201611198366 A CN 201611198366A CN 106448578 A CN106448578 A CN 106448578A
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- backlight
- integrated circuit
- brightness value
- value
- circuit current
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
- G09G2320/062—Adjustment of illumination source parameters
Abstract
The invention relates to a display screen back light control method, a display screen back light control device and computer equipment. The method comprises the following steps of detecting the brightness value of the back light of a display screen; judging whether the brightness value is smaller than the brightness threshold value or not; if so, switching the integrated circuit current output mode of the back light into an index mode; if not, switching the integrated circuit current output mode of the back light into a linear mode, wherein in the index mode, the integrated circuit current value of the back light and the brightness value of the back light form the index relationship, and in the linear mode, the integrated circuit current value of the back light and the brightness value of the back light form the linear relationship. The display screen back light control method, the display screen back light control device and the computer equipment have the advantages that if the brightness value is smaller than the brightness threshold value, the integrated circuit current output mode of the back light is switched into the index mode; when the value is lower than the brightness threshold value, the integrated circuit current output consistency of the back light is ensured; the dark shadow due to backlight display non-uniformity at the edge of the display screen can be avoided.
Description
Technical field
The present invention relates to electronic equipment field of backlight control, more particularly to a kind of display backlight control method, device
And computer equipment.
Background technology
Backlight is a kind of form of illumination, is commonly used on liquid crystal display.Electronic equipment when in use, the display of fuselage
Screen sends backlight, so that apparent display content.In order to adapt to the bright dark change of surrounding light, and user is using habit
Used, need to adjust the brightness and contrast of display screen.Traditional backlight concordance in the case of low-light level output has differences, and leads
Display screen edge backlit is caused to show uneven there is shadow.
Content of the invention
The embodiment of the present invention provides a kind of display backlight control method and device, and backlight can be avoided to show uneven to be had
The problem of shadow.
A kind of display backlight control method, including：
The brightness value of the backlight of detection display screen；
Judge whether described brightness value is less than luminance threshold, if so, then the integrated circuit electric current of described backlight is exported mould
Formula switches to exponential model, if it is not, then the integrated circuit current output mode of described backlight is switched to linear model, described finger
Digital modeling is to have exponent relation between the integrated circuit current value of described backlight and the brightness value of described backlight, described linear model
Linear between integrated circuit current value for described backlight and the brightness value of described backlight.
A kind of display backlight control device, including：
Detection module, for detecting the brightness value of the backlight of display screen；
Judge module, for judging whether described brightness value is less than luminance threshold；
Mode switch module, when being used for judging that described brightness value is less than described luminance threshold, then by the collection of described backlight
Become circuital current output mode to switch to exponential model, and judge that described brightness value is more than or equal to described luminance threshold
When, the integrated circuit current output mode of described backlight is switched to linear model, described exponential model is the collection of described backlight
Become and have exponent relation between circuital current value and the brightness value of described backlight, described linear model is the integrated circuit of described backlight
Linear between the brightness value of current value and described backlight.
A kind of computer equipment, including memorizer, processor and storage run can on a memory and on a processor
Computer program, realizes following steps during described computing device described program：
The brightness value of the backlight of detection display screen；
Judge whether described brightness value is less than luminance threshold, if so, then the integrated circuit electric current of described backlight is exported mould
Formula switches to exponential model, if it is not, then the integrated circuit current output mode of described backlight is switched to linear model, described finger
Digital modeling is to have exponent relation between the integrated circuit current value of described backlight and the brightness value of described backlight, described linear model
Linear between integrated circuit current value for described backlight and the brightness value of described backlight.
Above-mentioned display backlight control method, device and computer equipment, detection backlight brightness value, comparison brightness value with
Luminance threshold, if brightness value is less than luminance threshold, the integrated circuit current output mode of backlight is switched to exponential model, can
When less than luminance threshold it is ensured that backlight integrated circuit electric current output concordance, it is to avoid display screen edge backlit shows not
Uniformly there is shadow.
Brief description
Fig. 1 is the applied environment schematic diagram of display backlight control method and device in an embodiment；
Fig. 2 is the internal structure schematic diagram of an embodiment Computer equipment；
Fig. 3 is the flow chart of display backlight control method in an embodiment；
Fig. 4 is the exponential model of integrated circuit electric current output of backlight in an embodiment and the schematic diagram of linear model；
Fig. 5 is the structured flowchart of display backlight control device in an embodiment；
Fig. 6 is the structured flowchart of display backlight control device in another embodiment；
Fig. 7 is the structured flowchart of display backlight control device in another embodiment；
Fig. 8 is the structured flowchart of display backlight control device in another embodiment.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
It is appreciated that term " first " used in the present invention, " second " etc. can herein be used for describing various elements,
But these elements should not be limited by these terms.These terms are only used for distinguishing first element with another element.Citing comes
Say, without departing from the scope of the invention, the first client can be referred to as the second client, and similarly, can be by
Second client is referred to as the first client.First client and the second client both clients, but it is not same visitor
Family end.
Fig. 1 is the applied environment schematic diagram of display backlight control method and device in an embodiment.As shown in figure 1,
This applied environment includes computer equipment 110, this computer equipment 110 is provided with control backlight illumination progress bar 120 or
Backlight brightness values input frame etc..Computer equipment 110 obtains progress bar location or acquisition use after user's moving schedule bar
The brightness that family inputs in backlight brightness values input frame is worth to the brightness value of backlight, judges whether brightness value is less than luminance threshold
If so, the integrated circuit current output mode of backlight is then switched to exponential model by value, if it is not, then by the integrated circuit of backlight
Current output mode switches to linear model.
Fig. 2 is the internal structure schematic diagram of an embodiment Computer equipment.As shown in Fig. 2 this computer equipment bag
Include the processor connecting by system bus, non-volatile memory medium, built-in storage, network interface, display screen and input dress
Put.Wherein, the non-volatile memory medium of computer equipment is stored with operating system, also includes a kind of display backlight and controls dress
Put, this display backlight control device is used for realizing a kind of display backlight control method.This processor be used for provide calculate and
Control ability, supports the operation of whole computer equipment.Built-in storage in computer equipment is in non-volatile memory medium
Display backlight control device operation provide environment, computer-readable instruction can be stored in this built-in storage, this calculating
When machine readable instruction is by described computing device, a kind of described computing device display backlight control method can be made.Network
Interface is used for carrying out network service etc. with other equipment.The display screen of computer equipment can be LCDs or electronic ink
Water display screen etc., the touch layer that input equipment can cover on display screen or computer equipment shell are arranged
Button, trace ball or Trackpad or external keyboard, Trackpad or mouse etc..This computer equipment can be mobile phone,
Personal computer, panel computer, personal digital assistant or Wearable etc..It will be understood by those skilled in the art that showing in Fig. 2
The structure going out, only the block diagram of the part-structure related to application scheme, does not constitute and application scheme is applied to
The restriction of computer equipment thereon, specific computer equipment can include ratio part more or less of shown in figure, or
Person combines some parts, or has different part arrangements.
Fig. 3 is the flow chart of display backlight control method in an embodiment.As shown in figure 3, a kind of display backlight
Control method, including：
Step 302, the brightness value of the backlight of detection display screen.
In one embodiment, the brightness value of the backlight of display screen can be divided into 0 to 255.Can be by the scale on progress bar
Represent brightness value 0 to 255, receive the move to progress bar, according to move moving schedule bar to specified location, obtain
The scale of specified location obtains corresponding brightness value, i.e. brightness value.
In one embodiment, the brightness value input frame of backlight can be passed through, obtain the brightness value input frame in backlight for the user
The numerical value of middle input, obtains this numerical value as the brightness value of backlight.
The unit of brightness value be candela/square metre.
Step 304, judges that whether described brightness value is less than luminance threshold, if so, execution step 306, if it is not, execution step
308.
In one embodiment, luminance threshold is the integrated circuit current output mode change flag position for arranging backlight
Brightness value.Luminance threshold can set as needed.
Step 306, the integrated circuit current output mode of described backlight is switched to exponential model, and described exponential model is
Have exponent relation between the integrated circuit current value of described backlight and the brightness value of described backlight.
Step 308, the integrated circuit current output mode of described backlight is switched to linear model, and described linear model is
Linear between the integrated circuit current value of described backlight and the brightness value of described backlight.
In one embodiment, have exponent relation between the integrated circuit current value of backlight and the brightness value of backlight and refer to carry on the back
Variation relation between the integrated circuit current value of light and the brightness value of backlight exponentially functional relationship.The integrated circuit electricity of backlight
Between the brightness value of flow valuve and described backlight, the linear integrated circuit current value referring to backlight and described backlight is bright
The linear functional relationship of variation relation between angle value.
Fig. 4 is the exponential model of integrated circuit electric current output of backlight in an embodiment and the schematic diagram of linear model.
As shown in figure 4, the exponential model of the integrated circuit electric current output of 42 expression backlights, the integrated circuit electric current output of 44 expression backlights
Linear model.Wherein, abscissa is the brightness value of backlight, and vertical coordinate is the integrated circuit current value of backlight.From 42, carry on the back
The current value of integrated circuit electric current output of light and brightness value exponentially functional relationship.From 44, the integrated circuit electricity of backlight
The current value of stream output and the linear functional relationship of brightness value.
Above-mentioned display backlight control method, brightness value, comparison brightness value and the luminance threshold of detection backlight, if brightness value
Less than luminance threshold, then the integrated circuit current output mode of backlight is switched to exponential model, can when less than luminance threshold,
Ensure the concordance of the integrated circuit electric current output of backlight, it is to avoid display screen edge backlit shows uneven there is shadow.
In one embodiment, above-mentioned display backlight control method, also includes：By the integrated circuit current value of backlight with
The brightness value of backlight generates exponential relationship mapping table；When the integrated circuit current output mode of described backlight is exponential model,
Obtain the brightness value of backlight, current value corresponding with the brightness value of described backlight is obtained according to described exponential relationship mapping table, will
The integrated circuit electric current of described backlight is adjusted to described current value.
First the brightness value of the integrated circuit current value of backlight and backlight can be corresponded and generate exponential relationship mapping table.When
When the integrated circuit current output mode of backlight is exponential model, the brightness value according to backlight can be looked into from exponential relationship mapping table
Find corresponding current value, then control the integrated circuit electric current of backlight to be adjusted to corresponding current value.Mapped by exponential relationship
Table can quickly find the corresponding current value of brightness value, thus the output of the integrated circuit electric current of quick control backlight.
In one embodiment, above-mentioned display backlight control method, also includes：By the integrated circuit current value of backlight with
The brightness value of backlight generates linear relationship mapping table；When the integrated circuit current output mode of described backlight is linear model,
Obtain the brightness value of backlight, current value corresponding with the brightness value of described backlight is obtained according to described linear relationship mapping table, will
The integrated circuit electric current of described backlight is adjusted to described current value.
First the brightness value of the integrated circuit current value of backlight and backlight can be corresponded and generate linear relationship mapping table.When
When the integrated circuit current output mode of backlight is linear model, the brightness value according to backlight can be looked into from exponential relationship mapping table
Find corresponding current value, then control the integrated circuit electric current of backlight to be adjusted to corresponding current value.Mapped by linear relationship
Table can quickly find the corresponding current value of brightness value, thus the output of the integrated circuit electric current of quick control backlight.Current value
Unit can be milliampere.
In one embodiment, above-mentioned display backlight control method, also includes：Integrated circuit current value according to backlight
Generate exponential relationship mapping table and linear relationship mapping table with the brightness value of backlight respectively, and centered on described luminance threshold
Preset range in difference between the corresponding current value of brightness value to be less than preset value or difference be 0.
First the brightness value of the integrated circuit current value of backlight and backlight can be corresponded generate linear relationship mapping table and
Exponential relationship mapping table.The Trendline phase being depicted as with exponential relationship mapping table when the Trendline that linear relationship mapping table is depicted as
The corresponding current value of brightness value of intersection point is identical.Preset range and preset value set as needed, for example preset range be -5 to+
5, preset value is 1.Such as luminance threshold is 100, then the brightness value of preset range is 95 to 105, and brightness value 95 to 100 is corresponding
Current value is 8, and the corresponding current value of brightness value 101 to 105 is 9.Brightness value in preset range centered on control luminance threshold
Difference between corresponding current value be less than preset value it is ensured that the output of integrated circuit electric current near luminance threshold relatively
Smooth, it is to avoid to occur in the situation occurring near luminance threshold that output mode toggles.
In one embodiment, above-mentioned display backlight control method also includes：Judge whether the inspection of continuous several times
The brightness value surveyed is not less than luminance threshold, if so, then the integrated circuit current output mode of described backlight is switched to linear mould
Formula, if it is not, then remain exponential model by the integrated circuit current output mode of described backlight.
Continuous several times can determine as needed, and such as 2 times, 3 is inferior.By judge continuous several times detection brightness value whether not
Less than luminance threshold, reduce current output mode and be switched to the sensitivity of linear model it is ensured that being less than from exponential model
The concordance of the integrated circuit electric current output of backlight in the case of luminance threshold.
In one embodiment, above-mentioned display backlight control method also includes：Obtain range of luminance values, by brightness value model
Enclose and be divided into multiple intervals, be that same interval brightness value configures same integrated circuit current value.Range of luminance values be [0,
100], interval number can set as needed, such as 10, then can by interval [0,100] be divided into [0,9], [10,19], [20,
29], [30,39], [40,49], [50,59], [60,69], [70,79], [80,89], [90,100].Same interval brightness value
Configure same integrated circuit current value, current value as corresponding in [90,100] is 10 milliamperes.For same interval brightness value configuration
Same integrated circuit current value, can make that electric current is constant in brightness value interval, and electric current output-consistence is guaranteed.
By different interval brightness values and integrated circuit current value configuration exponent function relation or linear relationship.
Fig. 5 is the structured flowchart of display backlight control device in an embodiment.As shown in figure 5, a kind of display screen back of the body
Light control device 500, including detection module 502, judge module 504 and mode switch module 506.Wherein：
Detection module 502 is used for detecting the brightness value of the backlight of display screen.
The brightness value of the backlight of display screen can be divided into 0 to 255.Can by the scale on progress bar represent brightness value 0 to
255, receive the move to progress bar, according to move moving schedule bar to specified location, obtain the quarter of specified location
Degree obtains corresponding brightness value, i.e. brightness value.Or, by the brightness value input frame of backlight, obtain the brightness in backlight for the user
In value input frame, the numerical value of input, obtains this numerical value as the brightness value of backlight.
Judge module 504 is used for judging whether described brightness value is less than luminance threshold.
When mode switch module 506 is used for judging that described brightness value is less than described luminance threshold, then by described backlight
Integrated circuit current output mode switches to exponential model, and judges that described brightness value is more than or equal to described luminance threshold
When, the integrated circuit current output mode of described backlight is switched to linear model, described exponential model is the collection of described backlight
Become and have exponent relation between circuital current value and the brightness value of described backlight, described linear model is the integrated circuit of described backlight
Linear between the brightness value of current value and described backlight.
Above-mentioned display backlight control device, brightness value, comparison brightness value and the luminance threshold of detection backlight, if brightness value
Less than luminance threshold, then the integrated circuit current output mode of backlight is switched to exponential model, can when less than luminance threshold,
Ensure the concordance of the integrated circuit electric current output of backlight, it is to avoid display screen edge backlit shows uneven there is shadow.
Fig. 6 is the structured flowchart of display backlight control device in another embodiment.As shown in fig. 6, a kind of display screen
Backlight control apparatus 500, except including detection module 502, judge module 504 and mode switch module 506, also include the first pass
It is table generation module 508 and the first current regulating module 510.Wherein：
First relation table generation module 508 is used for for the brightness value of the integrated circuit current value of backlight and backlight generating index
Relation mapping table.
First current regulating module 510 is used for when the integrated circuit current output mode of described backlight is exponential model,
Obtain the brightness value of backlight, current value corresponding with the brightness value of described backlight is obtained according to described exponential relationship mapping table, will
The integrated circuit electric current of described backlight is adjusted to described current value.
First the brightness value of the integrated circuit current value of backlight and backlight can be corresponded and generate exponential relationship mapping table.When
When the integrated circuit current output mode of backlight is exponential model, the brightness value according to backlight can be looked into from exponential relationship mapping table
Find corresponding current value, then control the integrated circuit electric current of backlight to be adjusted to corresponding current value.Mapped by exponential relationship
Table can quickly find the corresponding current value of brightness value, thus the output of the integrated circuit electric current of quick control backlight.
In one embodiment, the first relation table generation module 508 is additionally operable to obtain range of luminance values, by range of luminance values
Be divided into multiple intervals, be that same interval brightness value configures same integrated circuit current value, by different interval brightness values with
Integrated circuit current value generates exponential relationship.
Fig. 7 is the structured flowchart of display backlight control device in another embodiment.As shown in fig. 7, a kind of display screen
Backlight control apparatus 500, except including detection module 502, judge module 504 and mode switch module 506, also include the second pass
It is table generation module 512 and the second current regulating module 514.Wherein：
Second relation table generation module 512 is used for generating linearly the brightness value of the integrated circuit current value of backlight and backlight
Relation mapping table.
Second current regulating module 514 is used for when the integrated circuit current output mode of described backlight is linear model,
Obtain the brightness value of backlight, current value corresponding with the brightness value of described backlight is obtained according to described linear relationship mapping table, will
The integrated circuit electric current of described backlight is adjusted to described current value.
First the brightness value of the integrated circuit current value of backlight and backlight can be corresponded and generate linear relationship mapping table.When
When the integrated circuit current output mode of backlight is linear model, the brightness value according to backlight can be looked into from exponential relationship mapping table
Find corresponding current value, then control the integrated circuit electric current of backlight to be adjusted to corresponding current value.Mapped by linear relationship
Table can quickly find the corresponding current value of brightness value, thus the output of the integrated circuit electric current of quick control backlight.
In one embodiment, the second relation table generation module 512 is additionally operable to obtain range of luminance values, by range of luminance values
Be divided into multiple intervals, be that same interval brightness value configures same integrated circuit current value, by different interval brightness values with
Integrated circuit current value generates exponential relationship.
Fig. 8 is the structured flowchart of display backlight control device in another embodiment.As shown in figure 8, a kind of display screen
Backlight control apparatus 500, except including detection module 502, judge module 504 and mode switch module 506, also include SAN GUAN
It is table generation module 516.Wherein：
3rd relation table generation module 516 is used for being given birth to respectively with the brightness value of backlight according to the integrated circuit current value of backlight
Exponent function relation mapping table and linear relationship mapping table, and brightness value pair in the preset range centered on described luminance threshold
It is 0 that difference between the current value answered is less than preset value or difference.
In preset range centered on control luminance threshold, the difference between the corresponding current value of brightness value is less than preset value,
The output relative smooth of the integrated circuit electric current near luminance threshold can be ensured, it is to avoid occur in occur near luminance threshold defeated
The situation that exit pattern toggles.
In one embodiment, described judge module 504 is additionally operable to judge whether the brightness value of continuous several times detection
Not less than luminance threshold.
If the brightness value that described handover module 506 is additionally operable to exist continuous several times detection is not less than luminance threshold, by institute
The integrated circuit current output mode stating backlight switches to linear model, and if do not exist continuous several times detection brightness value not
Less than luminance threshold, then the integrated circuit current output mode of described backlight is remained exponential model.
Continuous several times can determine as needed, and such as 2 times, 3 is inferior.By judge continuous several times detection brightness value whether not
Less than luminance threshold, reduce current output mode and be switched to the sensitivity of linear model it is ensured that being less than from exponential model
The concordance of the integrated circuit electric current output of backlight in the case of luminance threshold.
In other embodiments, a kind of display backlight control device, it may include detection module 502, judge module 504,
Mode switch module 506, the first relation table generation module 508, the first current regulating module 510, the second relation table generation module
512nd, arbitrarily possible combination in the second current regulating module 514 and the 3rd relation table generation module 516.
In above-mentioned display backlight control device, the division of modules is only used for illustrating, in other embodiments,
Display backlight control device can be divided into different modules as required, to complete above-mentioned display backlight control device
All or part of function.
Embodiments of the invention additionally provide a kind of computer equipment.A kind of computer equipment, including memorizer, processor
And storage is on a memory and the computer program that can run on a processor, during described computing device described program realization with
Lower step：The brightness value of the backlight of detection display screen；Judge whether described brightness value is less than luminance threshold, if so, then will be described
The integrated circuit current output mode of backlight switches to exponential model, if it is not, then exporting the integrated circuit electric current of described backlight
Pattern switching is linear model, described exponential model be integrated circuit current value and the described backlight of described backlight brightness value it
Between have exponent relation, described linear model is to be between the integrated circuit current value of described backlight and the brightness value of described backlight
Linear relationship.
Above computer equipment, brightness value, comparison brightness value and the luminance threshold of detection backlight, if brightness value is less than brightness
Threshold value, then switch to exponential model by the integrated circuit current output mode of backlight, can be it is ensured that backlight when less than luminance threshold
The output of integrated circuit electric current concordance, it is to avoid display screen edge backlit shows uneven there is shadow.
In one embodiment, following steps are realized during described computing device described program：
The brightness value of the integrated circuit current value of backlight and backlight is generated exponential relationship mapping table；
When the integrated circuit current output mode of described backlight is exponential model, obtain the brightness value of backlight, according to institute
State exponential relationship mapping table and obtain current value corresponding with the brightness value of described backlight, the integrated circuit electric current of described backlight is adjusted
Save as described current value.
First the brightness value of the integrated circuit current value of backlight and backlight can be corresponded and generate exponential relationship mapping table.When
When the integrated circuit current output mode of backlight is exponential model, the brightness value according to backlight can be looked into from exponential relationship mapping table
Find corresponding current value, then control the integrated circuit electric current of backlight to be adjusted to corresponding current value.Mapped by exponential relationship
Table can quickly find the corresponding current value of brightness value, thus the output of the integrated circuit electric current of quick control backlight.
In one embodiment, following steps are realized during described computing device described program：
The brightness value of the integrated circuit current value of backlight and backlight is generated linear relationship mapping table；
When the integrated circuit current output mode of described backlight is linear model, obtain the brightness value of backlight, according to institute
State linear relationship mapping table and obtain current value corresponding with the brightness value of described backlight, the integrated circuit electric current of described backlight is adjusted
Save as described current value.
First the brightness value of the integrated circuit current value of backlight and backlight can be corresponded and generate linear relationship mapping table.When
When the integrated circuit current output mode of backlight is linear model, the brightness value according to backlight can be looked into from exponential relationship mapping table
Find corresponding current value, then control the integrated circuit electric current of backlight to be adjusted to corresponding current value.Mapped by linear relationship
Table can quickly find the corresponding current value of brightness value, thus the output of the integrated circuit electric current of quick control backlight.
In one embodiment, following steps are realized during described computing device described program：
Integrated circuit current value according to backlight generates exponential relationship mapping table and linear pass respectively with the brightness value of backlight
It is mapping table, and the difference between the corresponding current value of brightness value is less than in the preset range centered on described luminance threshold
Preset value or difference are 0.
First the brightness value of the integrated circuit current value of backlight and backlight can be corresponded generate linear relationship mapping table and
Exponential relationship mapping table.The Trendline phase being depicted as with exponential relationship mapping table when the Trendline that linear relationship mapping table is depicted as
The corresponding current value of brightness value of intersection point is identical.Preset range and preset value set as needed.Centered on controlling luminance threshold
Preset range in difference between the corresponding current value of brightness value be less than preset value it is ensured that integrated near luminance threshold
The output relative smooth of circuital current, it is to avoid occur in the situation occurring near luminance threshold that output mode toggles.
In one embodiment, following steps are realized during described computing device described program：
Judge whether that the brightness value of continuous several times detection is not less than luminance threshold, if so, then by the collection of described backlight
Circuital current output mode is become to switch to linear model, if it is not, then keeping the integrated circuit current output mode of described backlight
For exponential model.
Continuous several times can determine as needed, and such as 2 times, 3 is inferior.By judge continuous several times detection brightness value whether not
Less than luminance threshold, reduce current output mode and be switched to the sensitivity of linear model it is ensured that being less than from exponential model
The concordance of the integrated circuit electric current output of backlight in the case of luminance threshold.
In one embodiment, following steps are realized during described computing device described program：Obtain range of luminance values, will
Range of luminance values is divided into multiple intervals, is that same interval brightness value configures same integrated circuit current value.Will be different interval
Brightness value and integrated circuit current value configuration exponent function relation or linear relationship.
One of ordinary skill in the art will appreciate that realizing all or part of flow process in above-described embodiment method, it is permissible
Instruct related hardware to complete by computer program, described program can be stored in a non-volatile computer and can read
In storage medium, this program is upon execution, it may include as the flow process of the embodiment of above-mentioned each method.Wherein, described storage is situated between
Matter can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM) etc..
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (11)
1. a kind of display backlight control method is it is characterised in that include：
The brightness value of the backlight of detection display screen；
Judge whether described brightness value is less than luminance threshold, if so, then the integrated circuit current output mode of described backlight is cut
It is changed to exponential model, if it is not, then the integrated circuit current output mode of described backlight is switched to linear model, described index mould
Formula is to have exponent relation between the integrated circuit current value of described backlight and the brightness value of described backlight, and described linear model is institute
State linear between the integrated circuit current value of backlight and the brightness value of described backlight.
2. display backlight control method according to claim 1 is it is characterised in that methods described also includes：
The brightness value of the integrated circuit current value of backlight and backlight is generated exponential relationship mapping table；
When the integrated circuit current output mode of described backlight is exponential model, obtain the brightness value of backlight, according to described finger
Number relation mapping table obtains current value corresponding with the brightness value of described backlight, and the integrated circuit electric current of described backlight is adjusted to
Described current value.
3. display backlight control method according to claim 1 is it is characterised in that methods described also includes：
The brightness value of the integrated circuit current value of backlight and backlight is generated linear relationship mapping table；
When the integrated circuit current output mode of described backlight is linear model, obtain the brightness value of backlight, according to described line
Sexual intercourse mapping table obtains current value corresponding with the brightness value of described backlight, and the integrated circuit electric current of described backlight is adjusted to
Described current value.
4. display backlight control method according to claim 1 is it is characterised in that methods described also includes：
The brightness value of the integrated circuit current value according to backlight and backlight generates exponential relationship mapping table respectively and linear relationship reflects
Firing table, and in the preset range centered on described luminance threshold the difference between the corresponding current value of brightness value be less than default
Value or difference are 0.
5. display backlight control method according to any one of claim 1 to 4 it is characterised in that methods described also
Including：
Judge whether that the brightness value of continuous several times detection is not less than luminance threshold, if so, then by the integrated electricity of described backlight
Road current output mode switches to linear model, if it is not, then the integrated circuit current output mode of described backlight is remained finger
Digital modeling.
6. a kind of display backlight control device is it is characterised in that include：
Detection module, for detecting the brightness value of the backlight of display screen；
Judge module, for judging whether described brightness value is less than luminance threshold；
Mode switch module, when being used for judging that described brightness value is less than described luminance threshold, then by the integrated electricity of described backlight
Road current output mode switches to exponential model, and when judging that described brightness value is more than or equal to described luminance threshold, will
The integrated circuit current output mode of described backlight switches to linear model, and described exponential model is the integrated circuit of described backlight
Have exponent relation between the brightness value of current value and described backlight, described linear model is the integrated circuit current value of described backlight
Linear and the brightness value of described backlight between.
7. display backlight control device according to claim 6 is it is characterised in that described device also includes：
First relation table generation module, reflects for the brightness value of the integrated circuit current value of backlight and backlight is generated exponential relationship
Firing table；
First current regulating module, for when the integrated circuit current output mode of described backlight is exponential model, obtaining the back of the body
The brightness value of light, obtains current value corresponding with the brightness value of described backlight according to described exponential relationship mapping table, by the described back of the body
The integrated circuit electric current of light is adjusted to described current value.
8. display backlight control device according to claim 6 is it is characterised in that described device also includes：
Second relation table generation module, reflects for the brightness value of the integrated circuit current value of backlight and backlight is generated linear relationship
Firing table；
Second current regulating module, for when the integrated circuit current output mode of described backlight is linear model, obtaining the back of the body
The brightness value of light, obtains current value corresponding with the brightness value of described backlight according to described linear relationship mapping table, by the described back of the body
The integrated circuit electric current of light is adjusted to described current value.
9. display backlight control device according to claim 6 is it is characterised in that described device also includes：
3rd relation table generation module, the brightness value for the integrated circuit current value according to backlight and backlight generates index respectively
Relation mapping table and linear relationship mapping table, and the corresponding electricity of brightness value in the preset range centered on described luminance threshold
It is 0 that difference between flow valuve is less than preset value or difference.
10. the display backlight control device according to any one of claim 6 to 9 is it is characterised in that described judgement mould
Block is additionally operable to judge whether that the brightness value of continuous several times detection is not less than luminance threshold；
If the brightness value that described handover module is additionally operable to exist continuous several times detection is not less than luminance threshold, by described backlight
Integrated circuit current output mode switches to linear model, and if there is not the brightness value of continuous several times detection not less than brightness
Threshold value, then remain exponential model by the integrated circuit current output mode of described backlight.
A kind of 11. computer equipments, including memorizer, processor and storage are on a memory and the meter that can run on a processor
Calculation machine program, realizes following steps during described computing device described program：
The brightness value of the backlight of detection display screen；
Judge whether described brightness value is less than luminance threshold, if so, then the integrated circuit current output mode of described backlight is cut
It is changed to exponential model, if it is not, then the integrated circuit current output mode of described backlight is switched to linear model, described index mould
Formula is to have exponent relation between the integrated circuit current value of described backlight and the brightness value of described backlight, and described linear model is institute
State linear between the integrated circuit current value of backlight and the brightness value of described backlight.
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