CN105632447A - Display brightness adjustment method and device of liquid crystal display - Google Patents
Display brightness adjustment method and device of liquid crystal display Download PDFInfo
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- CN105632447A CN105632447A CN201610203580.3A CN201610203580A CN105632447A CN 105632447 A CN105632447 A CN 105632447A CN 201610203580 A CN201610203580 A CN 201610203580A CN 105632447 A CN105632447 A CN 105632447A
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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 present invention discloses a display brightness adjustment method and device of a liquid crystal display. The objective of the invention is to improve the display effect of a mobile terminal display screen in the condition of variation in ambient light intensity. The method provided by the invention comprises: a mobile terminal obtains the variation information of the ambient light brightness; the mobile terminal determines the variation information of the ambient light brightness is that: the brightness addition in a unit time exceeds a first threshold; a characteristic curve is selected from a preset characteristic curve set according to the variation information of the ambient light brightness, wherein the characteristic curve is obtained after the offset in the brightness direction is added on the basis of the normalization gamma curve and the offset in the brightness direction is gradually decreased with the increasing gray values; and the mobile terminal employs the selected characteristic curve to adjust the display brightness of the display screen.
Description
Technical field
The present invention relates to communication technical field, particularly relate to display brightness inflation method and the device of a kind of liquid crystal display.
Background technology
Along with the generally application of intelligent terminal, what display screen became message exchange between user and intelligent terminal reuses approach.
Outdoor strong light environment is a special applications scene of mobile terminal. Under outdoor strong light environment, environment light strengthens, due to display screen reflection enhancement; usually there will be the situation not seeing display screen screen; such as, tourism is taken pictures or under the scene such as outdoor dialing, user needs the sunlight blocking on display screen just can see the display information of display screen clearly.
At present, when arriving indoor indoor, due to ambient light intensity change from weak to strong so that people's eye cannot see the display information of mobile terminal display screen clearly; When arriving indoor outdoor, owing to ambient light intensity is from by force to weak change, people's eye adapts to relatively slow, the display brightness of mobile terminal display screen can cause people's eye uncomfortable.
Visible, at present when ambient light intensity changes, the display effect of mobile terminal display screen is poor.
Summary of the invention
The embodiment of the present invention provides display brightness inflation method and the device of a kind of liquid crystal display, in order to improve the display effect of mobile terminal display screen when ambient light intensity changes.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
Embodiments provide the display brightness inflation method of a kind of liquid crystal display, comprising:
Mobile terminal obtains the change information of environmental light brightness;
Described mobile terminal determines that the change information of described environmental light brightness is that in the unit time, brightness increases above the first threshold value, change information according to described environmental light brightness selects a rational curve from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, and the skew amount on described luminance directions reduces gradually along with the increase of gray-scale value;
Described mobile terminal adopts the rational curve selected the brightness that display screen shows to be adjusted.
In possible enforcement mode, described default rational curve set comprises many rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
In possible enforcement mode, the skew amount of the rational curve selected from default rational curve set on described luminance directions is maximum.
In possible enforcement mode, described mobile terminal adopts the rational curve selected the brightness of display to be adjusted, and comprising:
The rational curve input of selection is used for the circuit of display brightness adjustment by described mobile terminal, adopts described rational curve to replace gamma curve by the described circuit for display brightness adjustment and the brightness of display is adjusted.
Embodiments provide the display brightness inflation method of another kind of liquid crystal display, comprising:
Mobile terminal obtains the change information of environmental light brightness;
Described mobile terminal determines that the change information of described environmental light brightness is that in the unit time, luminance-reduction exceedes Second Threshold, change information according to described environmental light brightness selects more than two rational curves successively from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, skew amount on described luminance directions reduces gradually along with the increase of gray-scale value, the rational curve of more than two selected arranges according to the order from big to small of the skew amount on the described luminance directions of correspondence,
Described mobile terminal puts in order according to more than two characteristic selected, and adopts the rational curve of selection the brightness that display screen shows to be adjusted respectively.
In possible enforcement mode, described default rational curve set comprises more than two rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
In possible enforcement mode, described mobile terminal adopts the rational curve selected the brightness of display to be adjusted, and comprising:
The rational curve input of selection is used for the circuit of display brightness adjustment by described mobile terminal, adopts described rational curve to replace gamma curve by the described circuit for display brightness adjustment and the brightness of display is adjusted.
The embodiment of the present invention additionally provides the display brightness setting device of a kind of liquid crystal display, comprising:
Acquisition module, for obtaining the change information of environmental light brightness;
Select module, for determining that the change information of described environmental light brightness is that in the unit time, brightness increases above the first threshold value, change information according to described environmental light brightness selects a rational curve from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, and the skew amount on described luminance directions reduces gradually along with the increase of gray-scale value;
Adjusting module, for adopting the rational curve of selection the brightness that display screen shows to be adjusted.
In possible enforcement mode, described default rational curve set comprises many rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
In possible enforcement mode, the skew amount of the rational curve that described selection module is selected from default rational curve set on described luminance directions is maximum.
In possible enforcement mode, described adjusting module specifically for:
The circuit that the input of the rational curve of selection is used for display brightness adjustment, adopts described rational curve to replace gamma curve by the described circuit for display brightness adjustment and the brightness of display is adjusted.
The embodiment of the present invention additionally provides the display brightness setting device of another kind of liquid crystal display, comprising:
Acquisition module, for obtaining the change information of environmental light brightness;
Select module, for determining that the change information of described environmental light brightness is that in the unit time, luminance-reduction exceedes Second Threshold, change information according to described environmental light brightness selects more than two rational curves successively from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, skew amount on described luminance directions reduces gradually along with the increase of gray-scale value, the rational curve of more than two selected arranges according to the order from big to small of the skew amount on the described luminance directions of correspondence,
Adjusting module, for putting in order according to more than two characteristic selected, adopts the rational curve of selection the brightness that display screen shows to be adjusted respectively.
In possible enforcement mode, described default rational curve set comprises more than two rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
In possible enforcement mode, described adjusting module specifically for:
The circuit that the input of the rational curve of selection is used for display brightness adjustment, adopts described rational curve to replace gamma curve by the described circuit for display brightness adjustment and the brightness of display is adjusted.
Based on technique scheme, in the embodiment of the present invention, if mobile terminal determines that environmental light brightness increases above the first threshold value within the unit time, can determine that mobile terminal moves to the stronger outdoor environment of environment light from the indoor environment that environment light is more weak, then according to change selection rational curve from default rational curve set of this environmental light brightness, the rational curve selected is adopted the brightness that display screen shows image to be adjusted, to increase the brightness of display image low ash rank part, improve the display effect of mobile terminal display screen under strong light environment, make the user of mobile terminal can see the display information of display screen clearly, and keep the brightness of high gray part as far as possible, to prevent there is the phenomenon of display distortion in the display screen of mobile terminal, thus improve the display effect of mobile terminal display screen, algorithm is simple and without the need to increasing extra hardware. or,
If mobile terminal determines that environmental light brightness decreases beyond Second Threshold within the unit time, can determine that mobile terminal moves to the more weak indoor environment of environment light from the outdoor environment that environment light is stronger, then according to change selection more than two rational curves from default rational curve set successively of environmental light brightness, owing to the rational curve of select more than two arranges according to the order from big to small of the skew amount on the luminance directions of correspondence, if the skew amount on the luminance directions that rational curve is corresponding is more big, then after adjustment, the display brightness of display screen is more bright, it is thus possible to putting in order according to this more than two characteristic, when adopting every bar rational curve of selection to be adjusted by the display brightness of display screen respectively, the display brightness reaching mobile terminal display screen is gradually from bright dimmed fade effect, avoid the display effect causing brightness of display screen to suddenly change people's eye when moving to darkroom environment from strong light environment, thus improve the display effect of mobile terminal display screen, algorithm is simple and without the need to increasing extra hardware.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram that in the embodiment of the present invention, mobile terminal carries out display brightness adjustment;
Fig. 2 is relation schematic diagram between sensor output value and environment 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 adopts different rational curves to the effect comparison schematic diagram carrying out brightness adjustment in the embodiment of the present invention;
Fig. 5 is the method flow schematic diagram that in the embodiment of the present invention, another mobile terminal carries out display brightness adjustment;
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 representation of mobile terminal in the embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the embodiment of the present invention, as shown in Figure 1, the method detailed flow process of the display brightness adjustment that mobile terminal carries out liquid crystal display is as follows:
Step 101: mobile terminal obtains the change information of environmental light brightness.
In enforcement, mobile terminal obtains environmental light brightness by optical sensor, the environmental light brightness that mobile terminal obtains according to optical sensor periodic sampling, it is determined that the change information of environmental light brightness.
In practical application, the change of ambient light intensity is non-linear, indoor light intensity is generally at 500 luxs (LUX) below, the part ambient light intensity of indoor and outdoor handing-over is sharply changed to 2000��3000LUX, outdoor optical intensity is generally at more than 10000LUX, and fine day outdoor optical intensity is at 20000��30000LUX. User has not generally seen screen when environment light is 10000LUX, continues to strengthen along with ambient light intensity, and the phenomenon not seen is more and more obvious, and wherein, LUX represents unit of illuminance.
Optical sensor is the device for obtaining ambient light intensity, and the responding range of middle and high end optical sensor can reach 0��10000LUX, and visible angle is �� 30 ��, is in the consideration of cost in actual items, is often difficult to reach. Low side optical sensor dynamicrange can detect 0��5000LUX, and visible angle is �� 25 ��, the relation schematic diagram being illustrated in figure 2 between this low side sensor output value and environment light. Optical sensor is generally positioned at the place of display screen perforate, and in the application, the dynamicrange of optical sensor calculates according to 10% penetration coefficient to be. As can be known from Fig. 2, for low end sensor, the response of optical sensor is linear, and the maximum illumination value that actual optical sensor can monitor, at about 5204LUX, when ambient light is greater than this maximum illumination value, calculates according to this maximum illumination value. Visible, optical sensor can reflect the change of environmental light intensity to a certain extent.
Step 102: mobile terminal determines that the change information of environmental light brightness is that in the unit time, brightness increases above the first threshold value, selects a rational curve according to the change information of environmental light brightness from default rational curve set.
Wherein, rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, and the skew amount on the luminance directions increased on the basis of normalization method gamma curve meets: along with the increase of gray-scale value reduces gradually. Rational curve is an irregular nonlinear curve, by normalized gamma curve in the bigger skew amount of the display brightness increase that low ash rank part is corresponding, in the skew amount that the display brightness increase that high gray part is corresponding is less, multiple rational curve can be obtained by adjusting the size of skew amount, rational curve can change the distribution of display image gray-scale level, low ash rank part is compressed, and high gray part is expanded. Reduce in the low ash rank part showing image, high gray part is when increasing, and the brightness of display image increases, the easier identification of people's eye.
Wherein, normalized gamma curve is obtain after the gamma curve that the brightness to display image adjusts is normalized. In the embodiment of the present invention, gamma curve can be gamma 2.4 curve, gamma 2.2 curve, gamma 2.0 curve etc. Specifically, gamma 2.4 graphical representation is y=x2.4, gamma 2.2 graphical representation is y=x2.2, gamma 2.0 graphical representation is y=x2.0, wherein x represents image gray scale, and y represents display brightness.
Wherein, the rational curve set preset comprises many rational curves, and wherein, the skew amount on the luminance directions that the every bar rational curve in rational curve set is corresponding is not identical.
In a preferably enforcement mode, the skew amount of the rational curve selected from default rational curve set on luminance directions is maximum.
Wherein, gamma curve is a nonlinear curve of the relation between the brightness of the figure image signal for the brightness and input reflecting the figure image signal that display screen exports so that the gray scale of image is from 0 to 255 linear change. Under indoor environment, on standard indicating meter, the image of display meets gamma curve substantially. The 32 ash rank schematic diagram meeting gamma curve as showing below Fig. 3 X-coordinate, rational curve is the distortion of gamma curve, characteristic object is to strengthen the brightness on low ash rank, make the low ash rank easy identification under sunlight showing image, keep the brightness of display image high gray simultaneously as far as possible, reduce distortion.
Solid line in as shown in Figure 3 is that gamma curve is normalized to the schematic diagram that a slope is the straight line of 45 ��, and X-coordinate represents gray-scale value (or grey scale), and ordinate zou represents brightness. From the normalized gamma curve of Fig. 3 it may be seen that 127 is middle ash rank, the gray-scale distribution of a pictures near this value and more than comparatively bright. The grey decision-making that so darker in image region is corresponding is lower, be not easy under strong environment light differentiate, under sunlight 63 ash rank below image content be difficult to see clearly. According to this principle, adjustment gamma curve obtain rational curve, by non-linear increase gamma curve low ash rank brightness obtain rational curve. Being many rational curves as shown in phantom in Figure 3, rational curve is different relative to the skew amount of gamma curve in low ash rank part, it is achieved the degree that brightness strengthens is not identical yet. Wherein, rational curve 1, rational curve 2, rational curve 3 are for realizing the rational curve of the degree that different brightness strengthens, and wherein, the degree that the brightness that rational curve 3 curve is corresponding strengthens is the highest. Adjustment be there is no need for high gray excessive, in order to avoid causing image distortion.
Step 103: mobile terminal adopts the rational curve selected the brightness that display screen shows to be adjusted.
In enforcement, mobile terminal adopts the rational curve selected the brightness of display to be adjusted, detailed process is as follows: the rational curve input of selection is used for the circuit of display brightness adjustment by mobile terminal, adopts this rational curve to replace gamma curve by this for the circuit that display brightness adjusts and the brightness of display is adjusted.
In the embodiment of the present invention, after adopting rational curve the brightness that display screen shows to be adjusted so that low ash rank part is compressed, and high gray part is expanded. It is illustrated in figure 4 the effect schematic diagram after adopting the rational curve 1 shown in Fig. 3, rational curve 2, rational curve 3 to be adjusted by display brightness respectively, after adopting rational curve to adjust, the identification of display improves, contrast the gray-scale statistical figure on multiple ash rank, it may be seen that the high gray part of display presents the trend increased gradually.
Based on technique scheme, in the embodiment of the present invention, if mobile terminal determines that environmental light brightness increases above the first threshold value within the unit time, can determine that mobile terminal moves to the stronger outdoor environment of environment light from the indoor environment that environment light is more weak, then according to change selection rational curve from default rational curve set of this environmental light brightness, the rational curve selected is adopted the brightness that display screen shows image to be adjusted, to increase the brightness of display image low ash rank part, improve the display effect of mobile terminal display screen under strong light environment, make the user of mobile terminal can see the display information of display screen clearly, and keep the brightness of high gray part as far as possible, to prevent there is the phenomenon of display distortion in the display screen of mobile terminal, thus improve the display effect of mobile terminal display screen, thus improve the display effect of mobile terminal display screen, algorithm is simple and without the need to increasing extra hardware.
Based on same invention design, in the embodiment of the present invention, as shown in Figure 5, the method detailed flow process of the display brightness adjustment that mobile terminal carries out liquid crystal display is as follows:
Step 501: mobile terminal obtains the change information of environmental light brightness.
In enforcement, mobile terminal obtains environmental light brightness by optical sensor, the environmental light brightness that mobile terminal obtains according to optical sensor periodic sampling, it is determined that the change information of environmental light brightness.
Step 502: mobile terminal determines that the change information of environmental light brightness is that in the unit time, luminance-reduction exceedes Second Threshold, change information according to environmental light brightness selects more than two rational curves successively from default rational curve set, wherein, rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, skew amount on luminance directions reduces gradually along with the increase of gray-scale value, and the rational curve of more than two of selection is according to the order arrangement from big to small of the skew amount on the luminance directions of correspondence.
In enforcement, the rational curve set preset comprises more than two rational curves, and wherein, the skew amount on the luminance directions that every bar rational curve is corresponding is not identical. Wherein, rational curve herein is identical with the rational curve described in step 102, repeats no more herein.
Step 503: mobile terminal puts in order according to more than two characteristic selected, and adopts the rational curve of selection the brightness that display screen shows to be adjusted respectively.
In enforcement, mobile terminal adopts the rational curve selected the brightness of display to be adjusted, detailed process is as follows: the rational curve input of selection is used for the circuit of display brightness adjustment by mobile terminal, adopts this rational curve to replace gamma curve by this for the circuit that display brightness adjusts and the brightness of display is adjusted.
Specifically, mobile terminal puts in order according to more than two characteristic selected, and adopts a selection rational curve in the rational curve of more than two selected at interval of length during setting, the brightness that display screen shows is adjusted. Wherein, during this setting, length can be determined by emulation, closes with appearance during the adaptation of the environment of people's eye from bright to dark.
In enforcement, after the brightness that display screen shows is adjusted by the rational curves of more than two that adopt selection successively, the brightness that display screen shows is adjusted by the gamma curve that when interval sets, length is recovered to preset for adopting, and namely returns to the adjustment mode of the brightness of display screen under the environment of darkroom. Wherein, during setting, length can be determined by emulation, closes with appearance during the adaptation of the environment of people's eye from bright to dark.
In practical application, along with people walks about in indoor and outdoor, or at outdoor shading light sensor, make the environmental light brightness sudden change that light sensors arrives, if mobile terminal selects rapidly rational curve to carry out display brightness adjustment when detecting that environmental light brightness is suddenlyd change, the phenomenon that display can be caused flickering. In addition, people's eye to bright secretly feel it is more complicated, such as, when from dark environment to bright environment, people's eye adapts to very fast, and time in from bright environment to dark environment, people's eye adapts to slower. Given this, mobile terminal determine the change information of environmental light brightness be luminance-reduction exceed Second Threshold time, namely it is defined as the sudden change from bright to dark, then different rational curves is adopted the brightness that display screen shows to be adjusted successively according to the order from big to small of skew amount on luminance directions, to avoid brightness of display screen sudden change to cause human eye perceives uncomfortable.
Based on technique scheme, in the embodiment of the present invention, if mobile terminal determines that environmental light brightness decreases beyond Second Threshold within the unit time, can determine that mobile terminal moves to the more weak indoor environment of environment light from the outdoor environment that environment light is stronger, then according to change selection more than two rational curves from default rational curve set successively of environmental light brightness, owing to the rational curve of select more than two arranges according to the order from big to small of the skew amount on the luminance directions of correspondence, if the skew amount on the luminance directions that rational curve is corresponding is more big, then after adjustment, the display brightness of display screen is more bright, it is thus possible to putting in order according to this more than two characteristic, when adopting every bar rational curve of selection to be adjusted by the display brightness of display screen respectively, the display brightness reaching mobile terminal display screen is gradually from bright dimmed fade effect, avoid the display effect causing brightness of display screen to suddenly change people's eye when moving to darkroom environment from strong light environment, thus improve the display effect of mobile terminal display screen, algorithm is simple and without the need to increasing extra hardware.
Based on same invention design, in the embodiment of the present invention, it provides the display brightness setting device of a kind of liquid crystal display, the concrete enforcement of this device see the description of aforesaid method part, can repeat part and repeat no more, and as shown in Figure 6, this device mainly comprises:
Acquisition module 601, for obtaining the change information of environmental light brightness;
Select module 602, for determining that the change information of described environmental light brightness is that in the unit time, brightness increases above the first threshold value, change information according to described environmental light brightness selects a rational curve from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, and the skew amount on described luminance directions reduces gradually along with the increase of gray-scale value;
Adjusting module 603, for adopting the rational curve of selection the brightness that display screen shows to be adjusted.
In enforcement, described default rational curve set comprises many rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
In enforcement, the skew amount of the rational curve that described selection module is selected from default rational curve set on described luminance directions is maximum.
In enforcement, described adjusting module specifically for:
The circuit that the input of the rational curve of selection is used for showing brightness of image adjustment, adopts described rational curve to replace gamma curve by the described circuit for showing brightness of image adjustment and the brightness of display image is adjusted.
In enforcement, also comprising memory module in this device, this memory module is for storing default rational curve set. Module is selected to select rational curve from the rational curve set that memory module stores.
Based on same invention design, in the embodiment of the present invention, it provides the display brightness setting device of another kind of liquid crystal display, the concrete enforcement of this device see the description of aforesaid method part, can repeat part and repeat no more, and as shown in Figure 7, this device mainly comprises:
Acquisition module 701, for obtaining the change information of environmental light brightness;
Select module 702, for determining that the change information of described environmental light brightness is that in the unit time, luminance-reduction exceedes Second Threshold, change information according to described environmental light brightness selects more than two rational curves successively from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, skew amount on described luminance directions reduces gradually along with the increase of gray-scale value, the rational curve of more than two selected arranges according to the order from big to small of the skew amount on the described luminance directions of correspondence,
Adjusting module 703, for putting in order according to more than two characteristic selected, adopts the rational curve of selection the brightness that display screen shows to be adjusted respectively.
In enforcement, described default rational curve set comprises more than two rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
In enforcement, described adjusting module specifically for:
The circuit that the input of the rational curve of selection is used for display brightness adjustment, adopts described rational curve to replace gamma curve by the described circuit for display brightness adjustment and the brightness of display is adjusted.
Specifically, described adjusting module is used for the characteristic of more than two according to selection and puts in order, and adopts at interval of length during setting in the rational curve of more than two selected and selects a rational curve, the brightness that display screen shows is adjusted. Wherein, during this setting, length can be determined by emulation, closes with appearance during the adaptation of the environment of people's eye from bright to dark.
Specifically, described adjusting module is used for after the brightness that display screen shows is adjusted by the rational curve of more than two that adopt selection successively, the brightness that display screen shows is adjusted by the gamma curve that when interval sets, length is recovered to preset for adopting, and namely returns to the adjustment mode of the brightness of display screen under the environment of darkroom. Wherein, during setting, length can be determined by emulation, closes with appearance during the adaptation of the environment of people's eye from bright to dark.
In enforcement, also comprising memory module in this device, this memory module is for storing default rational curve set. Module is selected to select rational curve from the rational curve set that memory module stores.
Based on same invention design, the embodiment of the present invention provides a kind of mobile terminal, the display brightness setting device 802 that as shown in Figure 8, this mobile terminal comprises optical sensor 801, Fig. 6 or Fig. 7 describes and the circuit 803 for showing brightness of image adjustment. Wherein, optical sensor 801 is connected with the acquisition module 601 or 701 in display brightness setting device 802, and the adjusting module 603 or 703 in display brightness setting device 802 is connected with the circuit 803 adjusted for display brightness.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program. Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect. And, the present invention can adopt the form at one or more upper computer program implemented of computer-usable storage medium (including but not limited to multiple head unit and optical memory etc.) wherein including computer usable program code.
The present invention is that schema and/or skeleton diagram with reference to method according to embodiments of the present invention, equipment (system) and computer program describe. Should understand can by the combination of the flow process in each flow process in computer program instructions flowchart and/or skeleton diagram and/or square frame and schema and/or skeleton diagram and/or square frame. These computer program instructions can be provided to the treater of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine so that the instruction performed by the treater of computer or other programmable data processing device is produced for realizing the device of function specified in schema flow process or multiple flow process and/or skeleton diagram square frame or multiple square frame.
These computer program instructions also can be stored in and can guide in computer-readable memory that computer or other programmable data processing device work in a specific way, making the instruction that is stored in this computer-readable memory produce the manufacture comprising instruction device, this instruction device realizes the function specified in schema flow process or multiple flow process and/or skeleton diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform a series of operation steps to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for realizing the step of the function specified in schema flow process or multiple flow process and/or skeleton diagram square frame or multiple square frame.
Obviously, the present invention can be carried out various change and modification and not depart from the spirit and scope of the present invention by the technician of this area. Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these change and modification.
Claims (14)
1. the display brightness inflation method of a liquid crystal display, it is characterised in that, comprising:
Mobile terminal obtains the change information of environmental light brightness;
Described mobile terminal determines that the change information of described environmental light brightness is that in the unit time, brightness increases above the first threshold value, change information according to described environmental light brightness selects a rational curve from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, and the skew amount on described luminance directions reduces gradually along with the increase of gray-scale value;
Described mobile terminal adopts the rational curve selected the brightness that display screen shows to be adjusted.
2. the method for claim 1, it is characterised in that, described default rational curve set comprises many rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
3. method as claimed in claim 2, it is characterised in that, the skew amount of the rational curve selected from default rational curve set on described luminance directions is maximum.
4. method as described in claim 1,2 or 3, it is characterised in that, described mobile terminal adopts the rational curve selected the brightness of display to be adjusted, and comprising:
The rational curve input of selection is used for the circuit of display brightness adjustment by described mobile terminal, adopts described rational curve to replace gamma curve by the described circuit for display brightness adjustment and the brightness of display is adjusted.
5. the display brightness inflation method of a liquid crystal display, it is characterised in that, comprising:
Mobile terminal obtains the change information of environmental light brightness;
Described mobile terminal determines that the change information of described environmental light brightness is that in the unit time, luminance-reduction exceedes Second Threshold, change information according to described environmental light brightness selects more than two rational curves successively from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, skew amount on described luminance directions reduces gradually along with the increase of gray-scale value, the rational curve of more than two selected arranges according to the order from big to small of the skew amount on the described luminance directions of correspondence,
Described mobile terminal puts in order according to more than two characteristic selected, and adopts the rational curve of selection the brightness that display screen shows to be adjusted respectively.
6. method as claimed in claim 5, it is characterised in that, described default rational curve set comprises more than two rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
7. method as described in claim 5 or 6, it is characterised in that, described mobile terminal adopts the rational curve selected the brightness of display to be adjusted, and comprising:
The rational curve input of selection is used for the circuit of display brightness adjustment by described mobile terminal, adopts described rational curve to replace gamma curve by the described circuit for display brightness adjustment and the brightness of display is adjusted.
8. the display brightness setting device of a liquid crystal display, it is characterised in that, comprising:
Acquisition module, for obtaining the change information of environmental light brightness;
Select module, for determining that the change information of described environmental light brightness is that in the unit time, brightness increases above the first threshold value, change information according to described environmental light brightness selects a rational curve from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, and the skew amount on described luminance directions reduces gradually along with the increase of gray-scale value;
Adjusting module, for adopting the rational curve of selection the brightness that display screen shows to be adjusted.
9. device as claimed in claim 8, it is characterised in that, described default rational curve set comprises many rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
10. device as claimed in claim 9, it is characterised in that, the skew amount of the rational curve that described selection module is selected from default rational curve set on described luminance directions is maximum.
11. devices as described in claim 8,9 or 10, it is characterised in that, described adjusting module specifically for:
The circuit that the input of the rational curve of selection is used for display brightness adjustment, adopts described rational curve to replace gamma curve by the described circuit for display brightness adjustment and the brightness of display is adjusted.
The display brightness setting device of 12. 1 kinds of liquid crystal display, it is characterised in that, comprising:
Acquisition module, for obtaining the change information of environmental light brightness;
Select module, for determining that the change information of described environmental light brightness is that in the unit time, luminance-reduction exceedes Second Threshold, change information according to described environmental light brightness selects more than two rational curves successively from default rational curve set, wherein, described rational curve is obtain after the skew amount increasing on luminance directions on the basis of normalized gamma curve, skew amount on described luminance directions reduces gradually along with the increase of gray-scale value, the rational curve of more than two selected arranges according to the order from big to small of the skew amount on the described luminance directions of correspondence,
Adjusting module, for putting in order according to more than two characteristic selected, adopts the rational curve of selection the brightness that display screen shows to be adjusted respectively.
13. devices as claimed in claim 12, it is characterised in that, described default rational curve set comprises more than two rational curves, and wherein, the skew amount on the described luminance directions that every bar rational curve is corresponding is not identical.
14. devices as described in claim 12 or 13, it is characterised in that, described adjusting module specifically for:
The circuit that the input of the rational curve of selection is used for display brightness adjustment, adopts described rational curve to replace gamma curve by the described circuit for display brightness adjustment and the brightness of display is adjusted.
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| CN201610203580.3A CN105632447B (en) | 2016-03-31 | 2016-03-31 | The display brightness method of adjustment and device of a kind of liquid crystal display |
| CN201810322389.XA CN108538265B (en) | 2016-03-31 | 2016-03-31 | Display brightness adjusting method and device of liquid crystal display screen |
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Also Published As
| Publication number | Publication date |
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| CN108538265B (en) | 2021-05-18 |
| CN105632447B (en) | 2018-05-18 |
| CN108538265A (en) | 2018-09-14 |
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