CN108538265A - A kind of the display brightness method of adjustment and device of liquid crystal display - Google Patents
A kind of the display brightness method of adjustment and device of liquid crystal display Download PDFInfo
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- CN108538265A CN108538265A CN201810322389.XA CN201810322389A CN108538265A CN 108538265 A CN108538265 A CN 108538265A CN 201810322389 A CN201810322389 A CN 201810322389A CN 108538265 A CN108538265 A CN 108538265A
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- characteristic curve
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- mobile terminal
- environmental light
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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
- G09G3/36—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 using liquid crystals
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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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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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
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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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
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
Abstract
The invention discloses the display brightness methods of adjustment and device of a kind of liquid crystal display, to improve display effect of the mobile terminal display screen in the case where ambient light intensity changes.Method is：The change information of acquisition for mobile terminal environmental light brightness；The mobile terminal determines that the change information of the environmental light brightness is that brightness increases above first threshold in the unit time, a characteristic curve is selected from preset characteristic curve set according to the change information of the environmental light brightness, wherein, to be obtained after offset on the basis of normalized gamma curve on increase luminance directions, the offset on the luminance directions is gradually reduced the characteristic curve with the increase of gray value；The mobile terminal is adjusted the brightness that display screen is shown using the characteristic curve of selection.
Description
The application is entitled " a kind of display brightness adjustment side of liquid crystal display proposed on March 31st, 2016
The divisional application of the Chinese invention patent application 201610203580.3 of method and device ".
Technical field
The present invention relates to the display brightness methods of adjustment and dress of field of communication technology more particularly to a kind of liquid crystal display
It sets.
Background technology
Commonly used with intelligent terminal, display screen becomes the reuse way of information exchange between user and intelligent terminal
Diameter.
Outdoor strong light environment is a special applications scene of mobile terminal.Under outdoor strong light environment, ambient light enhancing,
Due to display screen reflection enhancement, it usually will appear the case where not seeing display screen screen, for example, tourism is taken pictures or outdoor dialing etc.
Under scene, user, which needs to block the sunlight on display screen just, can see the display information of display screen.
Currently, when from interior to interior, due to the variation of ambient light intensity from weak to strong so that human eye can not see shifting clearly
The display information of dynamic terminal display screen；When from outdoor to interior, since ambient light intensity is from by force to weak variation, human eye adaptation
Relatively slow, the display brightness of mobile terminal display screen can cause human eye uncomfortable.
As it can be seen that at present in the case where ambient light intensity changes, the display effect of mobile terminal display screen is poor.
Invention content
The embodiment of the present invention provides a kind of the display brightness method of adjustment and device of liquid crystal display, mobile whole to improve
Hold display effect of the display screen in the case where ambient light intensity changes.
Specific technical solution provided in an embodiment of the present invention is as follows：
An embodiment of the present invention provides a kind of display brightness methods of adjustment of liquid crystal display, including：
The change information of acquisition for mobile terminal environmental light brightness；
The mobile terminal determines that the change information of the environmental light brightness is that brightness increases above first threshold in the unit time,
A characteristic curve is selected from preset characteristic curve set according to the change information of the environmental light brightness, wherein described
Characteristic curve is obtains after offset on the basis of normalized gamma curve on increase luminance directions, the luminance directions
On offset be gradually reduced with the increase of gray value；
The mobile terminal is adjusted the brightness that display screen is shown using the characteristic curve of selection.
In possible embodiment, the preset characteristic curve set includes a plurality of characteristic curve, wherein every spy
Offset on the corresponding luminance directions of linearity curve differs.
In possible embodiment, the characteristic curve selected from preset characteristic curve set is on the luminance directions
Offset it is maximum.
In possible embodiment, the mobile terminal is adjusted the brightness of display using the characteristic curve of selection,
Including：
Circuit of the mobile terminal by the characteristic curve input of selection for display brightness adjustment, display brightness is used for by described
The circuit of adjustment is replaced gamma curve using the characteristic curve and is adjusted to the brightness of display.
An embodiment of the present invention provides the display brightness methods of adjustment of another liquid crystal display, including：
The change information of acquisition for mobile terminal environmental light brightness；
The mobile terminal determines that the change information of the environmental light brightness is that brightness is reduced more than second threshold in the unit time,
Two or more characteristic curves are selected from preset characteristic curve set successively according to the change information of the environmental light brightness,
In, the characteristic curve is described to be obtained after offset on the basis of normalized gamma curve on increase luminance directions
Offset on luminance directions is gradually reduced with the increase of gray value, and two or more characteristic curves of selection are according to corresponding
Offset on the luminance directions being ranked sequentially from big to small；
The mobile terminal puts in order according to two or more of selection characteristic, and the characteristic curve of selection is respectively adopted
The brightness that display screen is shown is adjusted.
In possible embodiment, the preset characteristic curve set includes two or more characteristic curves, wherein every
Offset on corresponding luminance directions of characteristic curve differs.
In possible embodiment, the mobile terminal is adjusted the brightness of display using the characteristic curve of selection,
Including：
Circuit of the mobile terminal by the characteristic curve input of selection for display brightness adjustment, display brightness is used for by described
The circuit of adjustment is replaced gamma curve using the characteristic curve and is adjusted to the brightness of display.
The embodiment of the present invention additionally provides a kind of display brightness adjusting apparatus of liquid crystal display, including：
Acquisition module, the change information for obtaining environmental light brightness；
Selecting module, for determining that the change information of the environmental light brightness is that brightness increases above the first threshold in the unit time
Value, selects a characteristic curve, wherein institute according to the change information of the environmental light brightness from preset characteristic curve set
State characteristic curve be on the basis of normalized gamma curve increase luminance directions on offset after obtain, the brightness side
Upward offset is gradually reduced with the increase of gray value；
Module is adjusted, for being adjusted to the brightness that display screen is shown using the characteristic curve of selection.
In possible embodiment, the preset characteristic curve set includes a plurality of characteristic curve, wherein every spy
Offset on the corresponding luminance directions of linearity curve differs.
In possible embodiment, the characteristic curve that the selecting module is selected from preset characteristic curve set is in institute
The offset stated on luminance directions is maximum.
In possible embodiment, the adjustment module is specifically used for：
Circuit by the characteristic curve input of selection for display brightness adjustment is adopted by the circuit for display brightness adjustment
Gamma curve is replaced with the characteristic curve to be adjusted the brightness of display.
The embodiment of the present invention additionally provides the display brightness adjusting apparatus of another liquid crystal display, including：
Acquisition module, the change information for obtaining environmental light brightness；
Selecting module, for determining that the change information of the environmental light brightness is that brightness is reduced more than the second threshold in the unit time
Value selects two or more characteristics bent from preset characteristic curve set successively according to the change information of the environmental light brightness
Line, wherein the characteristic curve be on the basis of normalized gamma curve increase luminance directions on offset after obtain,
Offset on the luminance directions is gradually reduced with the increase of gray value, and two or more characteristic curves of selection are according to right
The offset on the luminance directions answered being ranked sequentially from big to small；
Module is adjusted, for putting in order according to two or more of selection characteristic, the characteristic that selection is respectively adopted is bent
Line is adjusted the brightness that display screen is shown.
In possible embodiment, the preset characteristic curve set includes two or more characteristic curves, wherein every
Offset on corresponding luminance directions of characteristic curve differs.
In possible embodiment, the adjustment module is specifically used for：
Circuit by the characteristic curve input of selection for display brightness adjustment is adopted by the circuit for display brightness adjustment
Gamma curve is replaced with the characteristic curve to be adjusted the brightness of display.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, mobile terminal if it is determined that environmental light brightness within the unit interval
Increase above first threshold, it may be determined that mobile terminal is moved to the stronger outdoor ring of ambient light from the weaker indoor environment of ambient light
Border then selects a characteristic curve, using selection according to the variation of the environmental light brightness from preset characteristic curve set
Characteristic curve shows that the brightness of image is adjusted to display screen, to increase the brightness for showing the low grey exponent part of image, improves and moves
Dynamic display effect of the terminal display screen under strong light environment so that the user of mobile terminal can see the display letter of display screen clearly
Breath, and the brightness of high gray part is kept as possible, to prevent the display screen of mobile terminal from the phenomenon that display distortion occur, to carry
The high display effect of mobile terminal display screen, algorithm are simple and without increasing additional hardware.Alternatively,
Mobile terminal is if it is determined that it is more than second threshold that environmental light brightness reduces within the unit interval, it may be determined that mobile terminal is from environment
The stronger outdoor environment of light is moved to the weaker indoor environment of ambient light, then according to the variation of environmental light brightness successively from preset
Two or more characteristic curves are selected in characteristic curve set, since two or more characteristic curves of selection are according to corresponding brightness
Offset on direction being ranked sequentially from big to small, if the offset on the corresponding luminance directions of characteristic curve is bigger,
The display brightness of display screen is brighter after adjustment, so as to put in order according to two or more characteristic, respectively
In the case of being adjusted to the display brightness of display screen using every characteristic curve of selection, reach mobile terminal display screen
Display brightness gradually from bright dimmed fade effect, avoids and causes to show to human eye when being moved to dark room conditions from strong light environment
The display effect of display screen jump in brightness, to improve the display effect of mobile terminal display screen, algorithm is simple and without increasing
Additional hardware.
Description of the drawings
Fig. 1 is the method flow schematic diagram that mobile terminal carries out display brightness adjustment in the embodiment of the present invention；
Fig. 2 is the relation schematic diagram between sensor output value and ambient light in the embodiment of the present invention；
Fig. 3 is gamma curve and characteristic relation schematic diagram in the embodiment of the present invention；
Fig. 4 is the Contrast on effect schematic diagram using different characteristic curves to progress brightness adjustment in the embodiment of the present invention；
Fig. 5 is the method flow schematic diagram that another mobile terminal carries out display brightness adjustment in the embodiment of the present invention；
Fig. 6 is apparatus structure schematic diagram in the embodiment of the present invention；
Fig. 7 is another apparatus structure schematic diagram in the embodiment of the present invention；
Fig. 8 is the structural schematic diagram of mobile terminal in the embodiment of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, as shown in Figure 1, mobile terminal carries out the detailed side of the display brightness adjustment of liquid crystal display
Method flow is as follows：
Step 101：The change information of acquisition for mobile terminal environmental light brightness.
In implementation, mobile terminal obtains environmental light brightness by optical sensor, and mobile terminal is adopted according to the optical sensor period
The environmental light brightness that sample obtains, determines the change information of environmental light brightness.
In practical application, the variation of ambient light intensity is nonlinear, and indoor light intensity is generally in 500 luxs（LUX）With
Under, the component environment luminous intensity change dramatically of indoor and outdoor handing-over is 2000 ~ 3000LUX, and outdoor luminous intensity is generally in 10000LUX
More than, luminous intensity is in 20000 ~ 30000LUX outside fine day room.User has not generally seen screen when ambient light is 10000LUX
Curtain, the phenomenon that continuing to enhance, do not see with ambient light intensity, are more and more obvious, wherein LUX indicates unit of illuminance.
Optical sensor is device for obtaining ambient light intensity, the response range of middle and high end optical sensor can reach 0 ~
10000LUX, visible angle be ± 30 °, in actual items be in cost the considerations of, it tends to be difficult to reach.Low side optical sensor is dynamic
State range can detect 0 ~ 5000LUX, and visible angle is ± 25 °, is illustrated in figure 2 the low side sensor output value and ambient light
Between relation schematic diagram.Optical sensor is generally positioned at the place of display screen trepanning, the dynamic model of optical sensor in the application
It encloses being calculated according to 10% penetrance.As can be known from Fig. 2, by taking low side sensor as an example, the response of optical sensor is linear
, the maximal illumination value that actual optical sensor can monitor is shone in ambient light illumination more than the maximum in 5204LUX or so
When angle value, calculated according to the maximal illumination value.As it can be seen that optical sensor can reflect the variation of environmental light intensity to a certain extent.
Step 102：Mobile terminal determines that the change information of environmental light brightness is that brightness increases above first in the unit time
Threshold value selects a characteristic curve according to the change information of environmental light brightness from preset characteristic curve set.
Wherein, characteristic curve be on the basis of normalized gamma curve increase luminance directions on offset after
It arrives, and offset on the basis of normalizing gamma curve on increased luminance directions meets：With the increase of gray value
It is gradually reduced.Characteristic curve is an irregular nonlinear curve, and normalized gamma curve is corresponded in low grey exponent part
Display brightness increase larger offset, in high gray part, the smaller offset of corresponding display brightness increase, passes through tune
The size of whole offset can obtain multiple characteristic curves, and characteristic curve can change the distribution of display image gray-scale level so that low
Grey exponent part is compressed, and high gray part is extended.In the feelings that the low grey exponent part reduction of display image, high gray part are increased
Under condition, show that the brightness of image increases, human eye is easier to recognize.
Wherein, normalized gamma curve is to showing that place is normalized in the gamma curve that the brightness of image is adjusted
It is obtained after reason.In the embodiment of the present invention, gamma curve can be 2.4 curve of gamma, 2.2 curve of gamma, 2.0 curve of gamma etc..
Specifically, 2.4 curve of gamma is expressed as, 2.2 curve of gamma is expressed as, and 2.0 curve of gamma is expressed as,
Wherein indicate gradation of image,Indicate display brightness.
Wherein, preset characteristic curve set includes a plurality of characteristic curve, wherein every spy in characteristic curve set
Offset on the corresponding luminance directions of linearity curve differs.
One is preferably carried out in mode, and the characteristic curve selected from preset characteristic curve set is on luminance directions
Offset it is maximum.
Wherein, gamma curve is the bright of the picture signal of brightness and the input of the picture signal for reflecting display screen output
One nonlinear curve of the relationship between degree so that the gray scale of image linear change from 0 to 255.Standard is aobvious under indoor environment
Show that the image shown on device substantially meets gamma curve.Meet 32 grayscale of gamma curve as being shown below Fig. 3 abscissas and show
It is intended to, characteristic curve is the deformation of gamma curve, and characteristic purpose is to enhance the brightness of low grayscale so that display image
Low grayscale it is recognizable in the sun, while as possible keep show image high gray brightness, reduce distortion.
Solid line in as shown in Figure 3 is the schematic diagram that gamma curve is normalized to the straight line that a slope is 45 °, horizontal seat
Mark indicates gray value（Or tonal gradation）, ordinate expression brightness.Can be seen that 127 from the normalized gamma curve of Fig. 3 is
The gray-scale distribution of intermediate grayscale, a pictures is more bright around and above in this value.So region pair dark in image
The grayscale value answered is relatively low, is not easy to differentiate under strong ambient light, and 63 grayscale picture material below has been difficult in the sun
See clearly.According to the principle, adjustment gamma curve obtains characteristic curve, passes through the non-linear brightness for increasing gamma curve in low grayscale
Obtain characteristic curve.It is a plurality of characteristic curve as shown in phantom in Figure 3, characteristic curve is in low grey exponent part relative to gamma curve
Offset it is different, realize that the degree of brightness enhancing also differs.Wherein, characteristic curve 1, characteristic curve 2, characteristic curve 3 are
Realize the characteristic curve of the degree of different brightness enhancings, wherein the degree of the corresponding brightness enhancing of 3 curve of characteristic curve is most
It is high.For high gray It is not necessary to adjust it is excessive, in order to avoid cause image fault.
Step 103：Mobile terminal is adjusted the brightness that display screen is shown using the characteristic curve of selection.
In implementation, mobile terminal is adjusted the brightness of display using the characteristic curve of selection, and detailed process is as follows：It moves
Circuit of the dynamic terminal by the characteristic curve input of selection for display brightness adjustment, is adopted by the circuit for display brightness adjustment
Gamma curve is replaced with the characteristic curve to be adjusted the brightness of display.
In the embodiment of the present invention, after being adjusted to the brightness that display screen is shown using characteristic curve so that low grayscale portion
Divide and compressed, high gray part is extended.Be illustrated in figure 4 be respectively adopted characteristic curve 1, characteristic curve 2 shown in Fig. 3,
Characteristic curve 3 is to the effect diagram after display brightness adjustment, and the identification shown after being adjusted using characteristic curve is improved, comparison
The gray-scale statistical figure of multiple grayscale, it can be seen that the trend gradually increased is presented in the high gray part of display.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, mobile terminal if it is determined that environmental light brightness within the unit interval
Increase above first threshold, it may be determined that mobile terminal is moved to the stronger outdoor ring of ambient light from the weaker indoor environment of ambient light
Border then selects a characteristic curve, using selection according to the variation of the environmental light brightness from preset characteristic curve set
Characteristic curve shows that the brightness of image is adjusted to display screen, to increase the brightness for showing the low grey exponent part of image, improves and moves
Dynamic display effect of the terminal display screen under strong light environment so that the user of mobile terminal can see the display letter of display screen clearly
Breath, and the brightness of high gray part is kept as possible, to prevent the display screen of mobile terminal from the phenomenon that display distortion occur, to carry
The high display effect of mobile terminal display screen, to improve the display effect of mobile terminal display screen, algorithm is simple and nothing
Additional hardware need to be increased.
Based on same inventive concept, in the embodiment of the present invention, as shown in figure 5, mobile terminal carries out the aobvious of liquid crystal display
Show that the method detailed flow of brightness adjustment is as follows：
Step 501：The change information of acquisition for mobile terminal environmental light brightness.
In implementation, mobile terminal obtains environmental light brightness by optical sensor, and mobile terminal is adopted according to the optical sensor period
The environmental light brightness that sample obtains, determines the change information of environmental light brightness.
Step 502：Mobile terminal determines that the change information of environmental light brightness is that brightness is reduced more than second in the unit time
Threshold value selects two or more characteristic curves from preset characteristic curve set successively according to the change information of environmental light brightness,
Wherein, characteristic curve is obtains after offset on the basis of normalized gamma curve on increase luminance directions, brightness side
Upward offset is gradually reduced with the increase of gray value, and two or more characteristic curves of selection are according to corresponding brightness side
Upward offset being ranked sequentially from big to small.
In implementation, preset characteristic curve set includes two or more characteristic curves, wherein every characteristic curve corresponds to
Luminance directions on offset differ.Wherein, characteristic curve herein is identical as the characteristic curve described in step 102,
Details are not described herein again.
Step 503：Mobile terminal puts in order according to two or more of selection characteristic, and selection is respectively adopted
Characteristic curve is adjusted the brightness that display screen is shown.
In implementation, mobile terminal is adjusted the brightness of display using the characteristic curve of selection, and detailed process is as follows：It moves
Circuit of the dynamic terminal by the characteristic curve input of selection for display brightness adjustment, is adopted by the circuit for display brightness adjustment
Gamma curve is replaced with the characteristic curve to be adjusted the brightness of display.
Specifically, mobile terminal puts in order according to two or more of selection characteristic, at interval of setting duration
Using a characteristic curve is selected in two or more of selection characteristic curves, the brightness that display screen is shown is adjusted.Its
In, which can be determined by emulating, related to the adaptation duration of environment of the human eye from bright to dark.
In implementation, two or more characteristic curves of selection are being used to be adjusted the brightness that display screen is shown successively
Afterwards, setting duration in interval, which is reverted to, is adjusted the brightness that display screen is shown using preset gamma curve, that is, restores to dark
Brightness of display screen adjustment mode under room environmental.Wherein, setting duration can be determined by emulating, with ring of the human eye from bright to dark
The adaptation duration in border is related.
In practical application, as people indoors walk about by outdoor, or optical sensor is blocked in outdoor so that optical sensor is examined
The environmental light brightness mutation measured, if mobile terminal selects rapidly characteristic curve to carry out when detecting environmental light brightness mutation
Display brightness adjusts, and can cause to show flickering phenomenon.In addition, human eye to it is bright it is dark feel it is more complicated, for example,
When from dark environment to bright environment, human eye adapt to it is very fast, when in from bright environment to dark environment, human eye adapt to compared with
Slowly.In consideration of it, mobile terminal is determined as when the change information for determining environmental light brightness is that brightness reduction is more than second threshold
The mutation from bright to dark occurs, then uses different characteristic curves successively according to the sequence of offset on luminance directions from big to small
The brightness that display screen is shown is adjusted, causes human eye not feel like oneself to avoid brightness of display screen mutation.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, mobile terminal if it is determined that environmental light brightness within the unit interval
It is more than second threshold to reduce, it may be determined that mobile terminal is moved to the weaker indoor ring of ambient light from the stronger outdoor environment of ambient light
Border then selects two or more characteristic curves from preset characteristic curve set successively according to the variation of environmental light brightness, due to
Two or more characteristic curves of selection being ranked sequentially from big to small according to the offset on corresponding luminance directions, if special
Offset on the corresponding luminance directions of linearity curve is bigger, then adjust after display screen display brightness it is brighter, so as to by
It puts in order according to two or more characteristic, display brightness of the every characteristic curve to display screen of selection is respectively adopted
In the case of being adjusted, reaches the display brightness of mobile terminal display screen gradually from bright dimmed fade effect, avoid
The display effect that brightness of display screen is mutated is caused to human eye when being moved to dark room conditions from strong light environment, it is mobile whole to improve
Hold the display effect of display screen, algorithm simple and without increasing additional hardware.
Based on same inventive concept, in the embodiment of the present invention, a kind of display brightness adjustment dress of liquid crystal display is provided
It sets, the specific implementation of the device can be found in the description of above method part, and overlaps will not be repeated, as shown in fig. 6, the device
Include mainly：
Acquisition module 601, the change information for obtaining environmental light brightness；
Selecting module 602, for determining that the change information of the environmental light brightness is that brightness increases above first in the unit time
Threshold value selects a characteristic curve according to the change information of the environmental light brightness from preset characteristic curve set, wherein
The characteristic curve is obtains after offset on the basis of normalized gamma curve on increase luminance directions, the brightness
Offset on direction is gradually reduced with the increase of gray value；
Module 603 is adjusted, for being adjusted to the brightness that display screen is shown using the characteristic curve of selection.
In implementation, the preset characteristic curve set includes a plurality of characteristic curve, wherein every characteristic curve corresponds to
The luminance directions on offset differ.
In implementation, the characteristic curve that the selecting module is selected from preset characteristic curve set is in the luminance directions
On offset it is maximum.
In implementation, the adjustment module is specifically used for：
Circuit by the characteristic curve input of selection for showing brightness of image adjustment, by described for showing that brightness of image adjusts
Circuit using the characteristic curve replace gamma curve to show image brightness be adjusted.
Further include memory module in the device in implementation, the memory module is for storing preset characteristic curve set.Choosing
It selects module and selects characteristic curve from the characteristic curve set that memory module stores.
Based on same inventive concept, in the embodiment of the present invention, the display brightness adjustment of another liquid crystal display is provided
Device, the specific implementation of the device can be found in the description of above method part, and overlaps will not be repeated, as shown in fig. 7, the dress
It sets and includes mainly：
Acquisition module 701, the change information for obtaining environmental light brightness；
Selecting module 702, for determining that the change information of the environmental light brightness is that brightness is reduced more than second in the unit time
Threshold value selects two or more characteristics bent from preset characteristic curve set successively according to the change information of the environmental light brightness
Line, wherein the characteristic curve be on the basis of normalized gamma curve increase luminance directions on offset after obtain,
Offset on the luminance directions is gradually reduced with the increase of gray value, and two or more characteristic curves of selection are according to right
The offset on the luminance directions answered being ranked sequentially from big to small；
Module 703 is adjusted, for putting in order according to two or more of selection characteristic, the characteristic of selection is respectively adopted
Curve is adjusted the brightness that display screen is shown.
In implementation, the preset characteristic curve set includes two or more characteristic curves, wherein every characteristic curve
Offset on the corresponding luminance directions differs.
In implementation, the adjustment module is specifically used for：
Circuit by the characteristic curve input of selection for display brightness adjustment is adopted by the circuit for display brightness adjustment
Gamma curve is replaced with the characteristic curve to be adjusted the brightness of display.
Specifically, the adjustment module is used to put in order according to two or more of selection characteristic, at interval of
Duration is set using a characteristic curve is selected in two or more characteristic curves of selection, the brightness that display screen is shown is carried out
Adjustment.Wherein, which can be determined by emulating, related to the adaptation duration of environment of the human eye from bright to dark.
Specifically, the adjustment module is used to use two or more characteristic curves of selection to show display screen successively
Brightness be adjusted after, interval setting duration, which is reverted to, to be adjusted the brightness that display screen is shown using preset gamma curve
It is whole, that is, restore the brightness of display screen adjustment mode to dark room conditions.Wherein, setting duration can be determined by emulating, with people
The adaptation duration of environment of the eye from bright to dark is related.
Further include memory module in the device in implementation, the memory module is for storing preset characteristic curve set.Choosing
It selects module and selects characteristic curve from the characteristic curve set that memory module stores.
Based on same inventive concept, a kind of mobile terminal is provided in the embodiment of the present invention, as shown in figure 8, the movement is whole
End include optical sensor 801, Fig. 6 or Fig. 7 description display brightness adjusting apparatus 802 and for show brightness of image adjust
Circuit 803.Wherein, optical sensor 801 is connect with the acquisition module 601 or 701 in display brightness adjusting apparatus 802, display
Adjustment module 603 or 703 in brightness adjusting device 802 is connect with the circuit 803 for display brightness adjustment.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
Usable storage medium（Including but not limited to magnetic disk storage and optical memory etc.）The shape of the computer program product of upper implementation
Formula.
The present invention be with reference to according to the method for the embodiment of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of display brightness method of adjustment of liquid crystal display, which is characterized in that including：
Mobile terminal obtains environmental light brightness by optical sensor periodic sampling；
The mobile terminal determines that the change information of the environmental light brightness is that brightness increases above first threshold in the unit time,
A characteristic curve is determined according to the change information of the environmental light brightness, wherein the characteristic curve is the change of gamma curve
Normalized gamma curve is increased larger offset, in high gray portion by shape in the corresponding display brightness of low ash exponent part
Corresponding display brightness is divided to increase smaller offset；
The mobile terminal is adjusted the brightness that display screen is shown using the characteristic curve.
2. the method as described in claim 1, which is characterized in that the characteristic curve preset characteristic in the mobile terminal
Collection of curves, the preset characteristic curve set includes a plurality of characteristic curve, wherein every characteristic curve is corresponding described
Offset on luminance directions differs.
3. the method as described in claims 1 or 2, which is characterized in that the mobile terminal is using the characteristic curve to display
The brightness of screen display is adjusted, including：
Circuit of the mobile terminal by characteristic curve input for display brightness adjustment is used for display brightness tune by described
Whole circuit is adjusted the brightness that display screen is shown using the characteristic curve.
4. a kind of display brightness method of adjustment of liquid crystal display, which is characterized in that including：
Mobile terminal obtains environmental light brightness by optical sensor periodic sampling；
The mobile terminal determines that the change information of the environmental light brightness is that brightness is reduced more than second threshold in the unit time,
Two characteristic curves are determined according to the change information of the environmental light brightness, wherein the characteristic curve is the change of gamma curve
Normalized gamma curve is increased larger offset, in high gray portion by shape in the corresponding display brightness of low ash exponent part
Corresponding display brightness is divided to increase smaller offset；
The mobile terminal is respectively adopted two characteristic curves and is adjusted twice to the brightness that display screen is shown.
5. a kind of display brightness adjusting apparatus of liquid crystal display, which is characterized in that including：
Acquisition module, for obtaining environmental light brightness by optical sensor periodic sampling；
Selecting module, for determining that the change information of the environmental light brightness is that brightness increases above the first threshold in the unit time
Value, a characteristic curve is determined according to the change information of the environmental light brightness, wherein the characteristic curve is gamma curve
Normalized gamma curve is increased larger offset, in high gray by deformation in the corresponding display brightness of low ash exponent part
The corresponding display brightness in part increases smaller offset；
Module is adjusted, for being adjusted to the brightness that display screen is shown using the characteristic curve.
6. device as claimed in claim 5, which is characterized in that the characteristic curve preset characteristic in the mobile terminal
Collection of curves, the preset characteristic curve set includes a plurality of characteristic curve, wherein every characteristic curve is corresponding described
Offset on luminance directions differs.
7. such as device described in claim 5 or 6, which is characterized in that the adjustment module is specifically used for：
Circuit by characteristic curve input for display brightness adjustment is used by the circuit for display brightness adjustment
The characteristic curve is adjusted the brightness that display screen is shown.
8. a kind of display brightness adjusting apparatus of liquid crystal display, which is characterized in that including：
Acquisition module, for obtaining environmental light brightness by optical sensor periodic sampling；
Selecting module, for determining that the change information of the environmental light brightness is that brightness is reduced more than the second threshold in the unit time
Value, two characteristic curves are determined according to the change information of the environmental light brightness, wherein the characteristic curve is gamma curve
Normalized gamma curve is increased larger offset, in high gray by deformation in the corresponding display brightness of low ash exponent part
The corresponding display brightness in part increases smaller offset；
Module is adjusted, the brightness that display screen is shown is adjusted twice for two characteristic curves to be respectively adopted.
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Also Published As
| Publication number | Publication date |
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| CN105632447B (en) | 2018-05-18 |
| CN105632447A (en) | 2016-06-01 |
| CN108538265B (en) | 2021-05-18 |
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Address after: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |