CN107039007A - A kind of method and device of backlight illumination adjustment - Google Patents
A kind of method and device of backlight illumination adjustment Download PDFInfo
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- CN107039007A CN107039007A CN201710464957.5A CN201710464957A CN107039007A CN 107039007 A CN107039007 A CN 107039007A CN 201710464957 A CN201710464957 A CN 201710464957A CN 107039007 A CN107039007 A CN 107039007A
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- 238000005286 illumination Methods 0.000 title claims abstract description 30
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- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 6
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
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Abstract
The embodiments of the invention provide a kind of method of adjustment of backlight illumination, it is related to field of terminal technology, the problem of alleviating mobile phone luminance shortage to a certain extent.This method includes：Obtain the pixel intensity maximum after chromaticity coordinates calibration process；According to the pixel intensity maximum, the backlight power supply electric current is adjusted, to adjust backlight illumination.During the embodiment of the present invention is shown suitable for terminal image.
Description
【Technical field】
The present invention relates to the method and device of field of terminal technology, more particularly to a kind of adjustment of backlight illumination.
【Background technology】
The display screen of mobile phone, because the colour filter that the color lump of backlight there may be difference or touch-screen there may be difference
Different, the tone that mobile phone can be caused to show has the partially yellow phenomenon such as green grass or young crops partially to occur.In order to avoid the appearance of such case, in the prior art
Chromaticity coordinates calibration (also referred to as white point balance debugging) can be used, this chromaticity coordinates is calibrated by controlling three sub-pixels of RGB
Ratio, can all debug into every piece of Mobile phone screen consistent color., it is necessary to by controlling RGB during chromaticity coordinates is calibrated
The ratio of three sub-pixels, makes each GTG of white reach the white of our setting；But it is due to the limitation of LCD physics,
We can not lighten most dark sub-pixel, can only dim bright sub-pixel, can just mix target white.And thus
The brightness step-down that mobile phone is shown can be caused.
【The content of the invention】
In view of this, the embodiments of the invention provide a kind of method of adjustment of backlight illumination and device, to a certain extent
The problem of alleviating mobile phone luminance shortage.
On the one hand, the embodiments of the invention provide a kind of method of adjustment of backlight illumination, methods described includes：
Obtain the pixel intensity maximum after chromaticity coordinates calibration process；
According to the pixel intensity maximum, the backlight power supply electric current is adjusted, to adjust backlight illumination.
Aspect as described above and any possible implementation, it is further provided a kind of implementation, it is described according to institute
Pixel intensity maximum is stated, the backlight power supply electric current is adjusted, is included with adjusting backlight illumination：
Obtain theoretical maximum brightness value；
According to pixel maximum brightness value and the difference of theoretical maximum brightness value, the pixel adjustment value is determined；
Backlight compensating value is determined according to formula Lf=[(255-n)/255] * Lm；
According to the backlight compensating value, determined from backlight value and the corresponding relation of current value corresponding with the backlight compensating value
Electric current compensating value；
According to the electric current compensating value, the backlight power supply electric current is adjusted；
Wherein, Lf is the backlight compensating value, and n is the pixel adjustment value, and Lm is theoretical maximum brightness value.
Aspect as described above and any possible implementation, it is further provided a kind of implementation, according to pixel
The difference of maximum brightness value and theoretical maximum brightness value, after determining the pixel adjustment value, in addition to：
The pixel adjustment value is stored in specified register.
Aspect as described above and any possible implementation, it is further provided a kind of implementation, it is described according to institute
Pixel intensity maximum is stated, the backlight power supply electric current is adjusted, is included with adjusting backlight illumination：
According to the pixel intensity maximum, it is determined that corresponding backlight power supply electric current；
Backlight power supply electric current is improved, until brightness of display screen reaches desired value.
Aspect as described above and any possible implementation, it is further provided a kind of implementation, are improving backlight
Supply current, after brightness of display screen reaches desired value, in addition to：
According to corresponding backlight power supply electric current in the state of reaching desired value in brightness of display screen, and, according to the picture
Plain brightness maxima determines that corresponding backlight power supply electric current is calculated, and obtains electric current compensating value；
The electric current compensating value is stored in specified register.
On the other hand, the embodiment of the present invention additionally provides a kind of adjusting apparatus of backlight illumination, and described device includes：
Acquiring unit, for obtaining the pixel intensity maximum after chromaticity coordinates calibration process；
Adjustment unit, it is bright to adjust backlight for according to the pixel intensity maximum, adjusting the backlight power supply electric current
Degree.
Aspect as described above and any possible implementation, it is further provided a kind of implementation, the adjustment list
Member includes：
Acquisition module, for obtaining theoretical maximum brightness value；
First determining module, for the difference according to pixel maximum brightness value and theoretical maximum brightness value, determines the picture
Plain adjusted value；
Second determining module, for determining backlight compensating value according to formula Lf=[(255-n)/255] * Lm；
3rd determining module, for according to the backlight compensating value, from the corresponding relation of backlight value and current value determine with
The corresponding electric current compensating value of the backlight compensating value；
First adjusting module, for according to the electric current compensating value, being adjusted to the backlight power supply electric current；
Wherein, Lf is the backlight compensating value, and n is the pixel adjustment value, and Lm is theoretical maximum brightness value.
Aspect as described above and any possible implementation, it is further provided a kind of implementation, described device is also
Including：
First memory cell, for the pixel adjustment value to be stored in specified register.
Aspect as described above and any possible implementation, it is further provided a kind of implementation, the adjustment list
Member includes：
4th determining module, for according to the pixel intensity maximum, it is determined that corresponding backlight power supply electric current；
Second adjusting module, for improving backlight power supply electric current, until brightness of display screen reaches desired value.
Aspect as described above and any possible implementation, it is further provided a kind of implementation, described device is also
Including：
Computing unit, for according in the state of brightness of display screen reaches desired value corresponding backlight power supply electric current, with
And, determine that corresponding backlight power supply electric current is calculated according to the pixel intensity maximum, obtain electric current compensating value；
Second memory cell, for the electric current compensating value to be stored in specified register.
The method of adjustment and device of brightness provided in an embodiment of the present invention, by adjusting the supply current of back light,
To adjust the brightness of back light, thus supply because carry out chromaticity coordinates calibration process and caused by luminance loss.
【Brief description of the drawings】
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this area
For those of ordinary skill, without having to pay creative labor, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is a kind of flow chart of the method for adjustment of backlight illumination provided in an embodiment of the present invention；
Fig. 2 is the flow chart of the method for adjustment of another backlight illumination provided in an embodiment of the present invention；
Fig. 3 is the flow chart of the method for adjustment of another backlight illumination provided in an embodiment of the present invention；
Fig. 4 is the flow chart of the method for adjustment of another backlight illumination provided in an embodiment of the present invention；
Fig. 5 is the flow chart of the method for adjustment of another backlight illumination provided in an embodiment of the present invention；
Fig. 6 is a kind of composition frame chart of the adjusting apparatus of backlight illumination provided in an embodiment of the present invention；
Fig. 7 is the composition frame chart of the adjusting apparatus of another backlight illumination provided in an embodiment of the present invention；
Fig. 8 is the composition frame chart of the adjusting apparatus of another backlight illumination provided in an embodiment of the present invention；
Fig. 9 is the composition frame chart of the adjusting apparatus of another backlight illumination provided in an embodiment of the present invention；
Figure 10 is the composition frame chart of the adjusting apparatus of another backlight illumination provided in an embodiment of the present invention.
【Embodiment】
In order to be better understood from technical scheme, the embodiment of the present invention is retouched in detail below in conjunction with the accompanying drawings
State.
It will be appreciated that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
Its embodiment, belongs to the scope of protection of the invention.
The term used in embodiments of the present invention is the purpose only merely for description specific embodiment, and is not intended to be limiting
The present invention." one kind ", " described " and "the" of singulative used in the embodiment of the present invention and appended claims
It is also intended to including most forms, unless context clearly shows that other implications.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, represent
There may be three kinds of relations, for example, A and/or B, can be represented：Individualism A, while there is A and B, individualism B these three
Situation.In addition, character "/" herein, it is a kind of relation of "or" to typically represent forward-backward correlation object.
A kind of method of adjustment of backlight illumination is provided in the embodiment of the present invention, as shown in figure 1, methods described includes：
101st, the pixel intensity maximum after chromaticity coordinates calibration process is obtained.
Chromaticity coordinates calibration process adjusts the process of designated ratio for the RGB ratio of display screen, for example, there is currently partially
The display screen RGB ratio of color is 255:254:253, and target RGB ratio is 255:255:255.It can be seen that colour cast
The blue proportion of screen it is minimum, but screen is can not to continue blueness to lighten., can only will be red and green in order to reach desired value
The ratio of color lowers.Adjustment method is that green reduction by 1, final ratio is 253 by the screen red reduction by 2 of colour cast:253:253,
Equal to desired value 255:255:255.Although identical before and after ratio, decline on absolute value, therefore color saturation will
Lose.
The pixel intensity maximum mentioned in step 101 is 253, and 255 be theoretical maximum brightness value, that is, is referred to single
Pixel dispatch from the factory do not adjust when accessible high-high brightness, can hereafter mention this concept.
102nd, according to the pixel intensity maximum, the backlight power supply electric current is adjusted, to adjust backlight illumination.
By adjusting the supply current of back light in the embodiment of the present invention, to adjust the brightness of back light, so as to mend
Foot because carry out chromaticity coordinates calibration process and caused by luminance loss.
The realization for step 102 provides following two feasible implementations in embodiments of the present invention.
The first implementation, completes to adjust by theoretical calculation, as described in Figure 2, including：
201st, theoretical maximum brightness value is obtained.
202nd, according to pixel maximum brightness value and the difference of theoretical maximum brightness value, the pixel adjustment value is determined.
203rd, backlight compensating value is determined according to formula Lf=[(255-n)/255] * Lm.
Wherein, Lf is the backlight compensating value, and n is the pixel adjustment value, and Lm is theoretical maximum brightness value.
204th, according to the backlight compensating value, determined and the backlight compensating value from the corresponding relation of backlight value and current value
Corresponding electric current compensating value.
Corresponding relation wherein between backlight value and current value is is pre-configured with, and specific corresponding to relation can be according to reality
Experiment measurement is obtained according to theoretical calculation.
205th, according to the electric current compensating value, the backlight power supply electric current is adjusted.
Because the compensation adjustment of backlight power supply electric current is required for starting when backlight is started every time, so it is accomplished by
Positively related reference record will be mended in equipment with carrying out electric current, it is therefore, after performing step 202, further comprising the steps of
206, as shown in figure 3, including：
206th, the pixel adjustment value is stored in specified register.
The process for being stored in specified register can be implemented as：Pixel adjustment value is changed into 16 systems, is burnt in IC
In the ID registers in portion, for example, the ID registers of display screen have 4, being burnt to one of those just can be with, but is required to not
The ID of normal display screen is influenceed to read.If normal identification ID1 registers, can be by pixel adjustment value to ID3
In register.Herein be a kind of example, as long as ensure pixel adjust to reading do not influence display screen ID reading.
It is the description of the first implementation above, second of implementation is explained below.
Second of implementation, completes to adjust by actual test, as described in Figure 4, including：
301st, according to the pixel intensity maximum, it is determined that corresponding backlight power supply electric current.
302nd, backlight power supply electric current is improved, until brightness of display screen reaches desired value.
The detection of desired value can be completed to monitor by tone calibration equipment.
It is similar with the first implementation, it is also required to that positively related ginseng will be mended with carrying out electric current in second of implementation
Number scale is recorded in equipment, therefore, after step 302 is performed, and further comprising the steps of 303 and 304, as shown in figure 5, including：
303rd, according to the corresponding backlight power supply electric current in the state of brightness of display screen reaches desired value, and, according to institute
State pixel intensity maximum and determine that corresponding backlight power supply electric current is calculated, obtain electric current compensating value.
304th, the electric current compensating value is stored in specified register.
The specific implementation that the electric current compensating value is stored in specified register is with the pixel adjustment value is deposited
The specific implementation stored up in register is specified is similar, will not be repeated here.
The embodiment of the present invention additionally provides a kind of adjusting apparatus of backlight illumination, available for realizing aforementioned approaches method flow,
Its constitute as shown in fig. 6, including：
Acquiring unit 41, for obtaining the pixel intensity maximum after chromaticity coordinates calibration process.
Adjustment unit 42, for according to the pixel intensity maximum, the backlight power supply electric current being adjusted, to adjust backlight
Brightness.
Optionally, as shown in fig. 7, the adjustment unit 42 includes：
Acquisition module 421, for obtaining theoretical maximum brightness value.
First determining module 422, for the difference according to pixel maximum brightness value and theoretical maximum brightness value, it is determined that described
Pixel adjustment value.
Second determining module 423, for determining backlight compensating value according to formula Lf=[(255-n)/255] * Lm.
3rd determining module 424, for according to the backlight compensating value, being determined from the corresponding relation of backlight value and current value
Electric current compensating value corresponding with the backlight compensating value.
First adjusting module 425, for according to the electric current compensating value, being adjusted to the backlight power supply electric current；
Wherein, Lf is the backlight compensating value, and n is the pixel adjustment value, and Lm is theoretical maximum brightness value.
Optionally, as shown in figure 8, described device also includes：
First memory cell 43, for the pixel adjustment value to be stored in specified register.
Optionally, as shown in figure 9, the adjustment unit 42 includes：
4th determining module 426, for according to the pixel intensity maximum, it is determined that corresponding backlight power supply electric current；
Second adjusting module 427, for improving backlight power supply electric current, until brightness of display screen reaches desired value.
Optionally, as shown in Figure 10, described device also includes：
Computing unit 44, for according in the state of brightness of display screen reaches desired value corresponding backlight power supply electric current,
And, determine that corresponding backlight power supply electric current is calculated according to the pixel intensity maximum, obtain electric current compensating value；
Second memory cell 45, for the electric current compensating value to be stored in specified register.
The adjusting apparatus of brightness provided in an embodiment of the present invention, by adjusting the supply current of back light, to adjust
The brightness of back light, thus supply because carry out chromaticity coordinates calibration process and caused by luminance loss.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In several embodiments provided by the present invention, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, for example, multiple units or group
Part can combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown
Or the coupling each other discussed or direct-coupling or communication connection can be by some interfaces, device or unit it is indirect
Coupling is communicated to connect, and can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in an embodied on computer readable and deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are to cause a computer
Device (can be personal computer, server, or network equipment etc.) or processor (Processor) perform the present invention each
The part steps of embodiment methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. it is various
Can be with the medium of store program codes.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (10)
1. a kind of method of adjustment of backlight illumination, it is characterised in that methods described includes：
Obtain the pixel intensity maximum after chromaticity coordinates calibration process；
According to the pixel intensity maximum, the backlight power supply electric current is adjusted, to adjust backlight illumination.
2. according to the method described in claim 1, it is characterised in that described according to the pixel intensity maximum, adjustment is described
Backlight power supply electric current, is included with adjusting backlight illumination：
Obtain theoretical maximum brightness value；
According to pixel maximum brightness value and the difference of theoretical maximum brightness value, the pixel adjustment value is determined；
Backlight compensating value is determined according to formula Lf=[(255-n)/255] * Lm；
According to the backlight compensating value, electricity corresponding with the backlight compensating value is determined from backlight value with the corresponding relation of current value
Flow compensating value；
According to the electric current compensating value, the backlight power supply electric current is adjusted；
Wherein, Lf is the backlight compensating value, and n is the pixel adjustment value, and Lm is theoretical maximum brightness value.
3. method according to claim 2, it is characterised in that according to pixel maximum brightness value and theoretical maximum brightness value
Difference, after determining the pixel adjustment value, in addition to：
The pixel adjustment value is stored in specified register.
4. according to the method described in claim 1, it is characterised in that described according to the pixel intensity maximum, adjustment is described
Backlight power supply electric current, is included with adjusting backlight illumination：
According to the pixel intensity maximum, it is determined that corresponding backlight power supply electric current；
Backlight power supply electric current is improved, until brightness of display screen reaches desired value.
5. method according to claim 4, it is characterised in that improving backlight power supply electric current, until brightness of display screen reaches
To after desired value, in addition to：
According to corresponding backlight power supply electric current in the state of reaching desired value in brightness of display screen, and, it is bright according to the pixel
Degree maximum determines that corresponding backlight power supply electric current is calculated, and obtains electric current compensating value；
The electric current compensating value is stored in specified register.
6. a kind of adjusting apparatus of backlight illumination, it is characterised in that described device includes：
Acquiring unit, for obtaining the pixel intensity maximum after chromaticity coordinates calibration process；
Adjustment unit, for according to the pixel intensity maximum, the backlight power supply electric current being adjusted, to adjust backlight illumination.
7. device according to claim 6, it is characterised in that the adjustment unit includes：
Acquisition module, for obtaining theoretical maximum brightness value；
First determining module, for the difference according to pixel maximum brightness value and theoretical maximum brightness value, determines that the pixel is adjusted
Whole value；
Second determining module, for determining backlight compensating value according to formula Lf=[(255-n)/255] * Lm；
3rd determining module, for according to the backlight compensating value, from the corresponding relation of backlight value and current value determine with it is described
The corresponding electric current compensating value of backlight compensating value；
First adjusting module, for according to the electric current compensating value, being adjusted to the backlight power supply electric current；
Wherein, Lf is the backlight compensating value, and n is the pixel adjustment value, and Lm is theoretical maximum brightness value.
8. device according to claim 7, it is characterised in that described device also includes：
First memory cell, for the pixel adjustment value to be stored in specified register.
9. device according to claim 6, it is characterised in that the adjustment unit includes：
4th determining module, for according to the pixel intensity maximum, it is determined that corresponding backlight power supply electric current；
Second adjusting module, for improving backlight power supply electric current, until brightness of display screen reaches desired value.
10. device according to claim 9, it is characterised in that described device also includes：
Computing unit, for according in the state of brightness of display screen reaches desired value corresponding backlight power supply electric current, and, root
Determine that corresponding backlight power supply electric current is calculated according to the pixel intensity maximum, obtain electric current compensating value；
Second memory cell, for the electric current compensating value to be stored in specified register.
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| CN201710464957.5A CN107039007A (en) | 2017-06-19 | 2017-06-19 | A kind of method and device of backlight illumination adjustment |
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Cited By (5)
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| CN109461409A (en) * | 2018-10-31 | 2019-03-12 | 北京小米移动软件有限公司 | Screen display method and device |
| CN110164385A (en) * | 2019-05-31 | 2019-08-23 | 厦门天马微电子有限公司 | A kind of adjusting method of back light source brightness |
| WO2019184660A1 (en) * | 2018-03-30 | 2019-10-03 | 中兴通讯股份有限公司 | Screen brightness calibration method, device and system, and computer-readable storage medium |
| CN110930954A (en) * | 2019-12-16 | 2020-03-27 | 上海天马微电子有限公司 | Display brightness compensation method and compensation system |
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| CN109461409A (en) * | 2018-10-31 | 2019-03-12 | 北京小米移动软件有限公司 | Screen display method and device |
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