CN104732925B - A kind of processing method and processing device of rgb signal - Google Patents
A kind of processing method and processing device of rgb signal Download PDFInfo
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- CN104732925B CN104732925B CN201510148679.3A CN201510148679A CN104732925B CN 104732925 B CN104732925 B CN 104732925B CN 201510148679 A CN201510148679 A CN 201510148679A CN 104732925 B CN104732925 B CN 104732925B
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
Abstract
The embodiment of the invention discloses a kind of processing method and processing device of rgb signal, it is related to display technology field, to provide a kind of scheme for the power consumption for effectively reducing display device.In embodiments of the present invention, rgb signal is received, obtains the grey decision-making of the three primary colours of the current pixel carried in rgb signal respectively；When the grey decision-making of at least one primary colours in the grey decision-making of three primary colours is zero, according to non-zero grey decision-making, determine whether primary colours corresponding to non-zero grey decision-making reach saturation state, and the grey decision-making for the primary colours for having reached luminance saturation state is converted to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white；According to the brightness output valve after conversion, the brightness output valve of white and the not up to grey decision-making of the primary colours of saturation state, rgb signal is converted to the RGBW signals of the brightness output valve of the three primary colours for carrying current pixel and white；It is achieved thereby that above-mentioned function.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of processing method and processing device of rgb signal.
Background technology
At present, traditional ultra high-definition Display Technique mainly includes RGB (red, green, blue) ultra high-definition Display Techniques and RGBW
(red, green, blue, white) ultra high-definition Display Technique.Wherein, RGBW ultra high-definitions Display Technique be traditional RGB three primary colours (that is, it is red,
Green, blueness) on the basis of add white (White) sub-pixel (Sub-pixel), form RGBW structures, i.e. display device
Each pixel cell be respectively provided with red sub-pixel light-emitting component, green sub-pixel for emitting light element, blue subpixels light-emitting component and
White sub-pixels light-emitting component, by adjusting the operating voltage or electric current of different subpixel light-emitting component, so as to adjust different face
The brightness value (also referred to as grey decision-making) of the luminescence unit of color, finally makes each pixel cell show the color of different brightness.
However, picture signal of the prior art is usually rgb signal, due to being compared using the display device of RGBW structures
White sub-pixels light-emitting component is increased newly using the display device of RGB structures, if rgb signal is directly inputted to using RGBW
The display device of structure, just easily lead to the distortion of display device, it is therefore desirable to after rgb signal is converted into RGBW signals,
The driving of RGBW signals could be utilized to be imaged using the display device of RGBW structures.
However, rgb signal of the prior art is only capable of for showing white light (in white light together to RGBW signal conversion plans
When include three grey decision-makings of three primary colours) rgb signal be converted to RGBW signals, to for showing non-white light (in non-white light only
Include a grey decision-making or two grey decision-makings) rgb signal for, prior art actually simply maintain former rgb signal
In each grey decision-making (namely red grey decision-making, green grey decision-making and blue grey decision-making) original value.However, due to display
The light synthesis of green sub-pixel for emitting light element, red sub-pixel light-emitting component and blue subpixels light-emitting component in device passes through
Rate is much smaller than white sub-pixels light-emitting component, especially when red, green or blueness are intended to luminance saturation, in order to further
Improve the brightness of red, green or blueness, it is necessary to expend a large amount of power of display device could drive green sub-pixel for emitting light element,
Red sub-pixel light-emitting component or blue subpixels light-emitting component show higher brightness.For example, current pixel unit
It is shown that blue light, if lifting 10nits (nit) blue light brightness on the basis of now needing the brightness in saturation degree, that
A large amount of power consumptions will be increased.
It can be seen that lack a kind of method for effectively reducing display device power consumption in the prior art.
The content of the invention
The embodiment of the present invention provides a kind of processing method and processing device of rgb signal, is shown to provide a kind of effectively reduce
The scheme of the power consumption of device.
The embodiments of the invention provide a kind of processing method of rgb signal, this method includes：
Rgb signal is received, obtains the grey decision-making of the three primary colours of the current pixel carried in the rgb signal respectively；
When the grey decision-making of at least one primary colours in the grey decision-making of the three primary colours is zero, according to non-zero grey decision-making, it is determined that
Whether primary colours corresponding to the non-zero grey decision-making reach saturation state, and will reach the grey decision-making of the primary colours of luminance saturation state
Be converted to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white；Wherein, the white brightness output valve pair
The white brightness answered is used for the part luma for substituting the primary colours for having reached luminance saturation state；
According to the brightness output valve after conversion, the brightness output valve of white and the not up to GTG of the primary colours of saturation state
Value, the rgb signal is converted to the RGBW signals of the brightness output valve of the three primary colours for carrying current pixel and white.
The embodiments of the invention provide a kind of processing unit of rgb signal, the device includes：
Receiving unit, for receiving rgb signal, the three primary colours of the current pixel carried in the rgb signal are obtained respectively
Grey decision-making；
Processing unit, for when the grey decision-making of at least one primary colours in the grey decision-making of the three primary colours is zero, according to non-
Zero grey decision-making, determines whether primary colours corresponding to the non-zero grey decision-making reach saturation state, and will reach luminance saturation state
Primary colours grey decision-making be converted to corresponding primary colours predetermined luminance output valve and white brightness output valve；Wherein, the white
Brightness output valve corresponding to white brightness be used for substitute reached luminance saturation state primary colours part luma；
Converting unit, for according to the brightness output valve after conversion, the brightness output valve and not up to saturation state of white
Primary colours grey decision-making, the rgb signal is converted to the brightness output valve of the three primary colours for carrying current pixel and white
RGBW signals.
It can be seen from the above technical proposal that when at least one grey decision-making is zero in red, green, blue grey decision-making,
According to non-zero grey decision-making, determine whether primary colours corresponding to the non-zero grey decision-making reach saturation state, and luminance saturation will have been reached
The grey decision-making of the primary colours of state is converted to the brightness output valve of default corresponding primary colours and the brightness output valve of white；Filled in display
In putting, sub-pixel for emitting light element is driven by different size of curtage, and is compared, and white sub-pixels light
The light combined permeation highest (being more than red, blueness, the light combined permeation of green sub-pixel for emitting light element) of element, it is seen then that
In same brightness, the power consumption that driving white sub-pixels light-emitting component expends when luminous is smaller, and driving is red, blue or green
Power consumption spent by pixel light emission element is more；The embodiment of the present invention can utilize white brightness replacement to reach luminance saturation shape
The red blue or green part luma of state, so as to reduce the power consumption of display device, and improve display device into
As effect.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is a kind of schematic flow sheet of the processing method of rgb signal provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of the processing unit of rgb signal provided in an embodiment of the present invention.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with accompanying drawing into
One step it is described in detail, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
The embodiment of the present invention can apply to all kinds of luminous display units, such as：Plasma panel, grating light valve, microcomputer
Tool device, electric moistening display, electrochromic display device (ECD), electronic display, electrophoretic display device (EPD), Field Emission Display, surface pass
Electron emission display device, organic light emitting diode display (OLED) etc. are led, only need to use RGBW structure display images；
Wherein, the embodiment of the present invention is particularly suitable for use in the OLED display using RGBW structures.For OLED, especially match somebody with somebody in white light
When closing the true color mode of chromatic photoresist (WOLED/CF), the embodiment of the present invention can provide a kind of rgb signal and be converted to RGBW
The scheme of signal, signal source RGB GTGs can be converted to RGBW signals, and then control the chromaticity coordinates or colour temperature of display image.
Scheme provided in an embodiment of the present invention can be integrated in the drive control end of display device, such as movement chip SOC or SECO
Circuit TCON.
Fig. 1 shows a kind of schematic flow sheet of the processing method of rgb signal provided in an embodiment of the present invention, such as Fig. 1 institutes
Show, the flow includes：
Step 11：Rgb signal is received, obtains the grey decision-making of the three primary colours of the current pixel carried in rgb signal respectively.
Step 12：When the grey decision-making of at least one primary colours in the grey decision-making of three primary colours is zero, according to non-zero grey decision-making, really
Determine whether primary colours corresponding to non-zero grey decision-making reach saturation state, and the grey decision-making that will reach the primary colours of luminance saturation state turns
It is changed to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white；Wherein, it is white corresponding to white brightness output valve
Colour brightness is used for the part luma for substituting the primary colours for having reached luminance saturation state.
Step 13：According to the brightness output valve after conversion, the brightness output valve of white and not up to primary colours of saturation state
Grey decision-making, rgb signal is converted to carry current pixel three primary colours and white brightness output valve RGBW signals.
Optionally, in above-mentioned steps 12, when any two grey decision-making is zero in the grey decision-making of three primary colours, non-zero is judged
Whether primary colours corresponding to grey decision-making reach luminance saturation state, if so, will then reach the GTG of the primary colours of luminance saturation state
Value is converted to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white.
Optionally, in above-mentioned steps 12, when only one grey decision-making is zero in the grey decision-making of three primary colours, two are judged respectively
Whether primary colours corresponding to individual non-zero grey decision-making reach luminance saturation state simultaneously, if so, then by relatively low non-of luminance saturation degree
The component for having reached luminance saturation state in primary colours corresponding to zero grey decision-making is all converted to the luminance component of white, and utilizes and be somebody's turn to do
White brightness substitutes the part for having reached luminance saturation state in primary colours corresponding to the higher non-zero grey decision-making of luminance saturation degree
Brightness, and the grey decision-making of primary colours corresponding to non-zero grey decision-making is converted to the predetermined luminance output valve of corresponding primary colours, wherein, brightness
Degree of saturation characterizes the grey decision-making and the difference of its default saturation GTG threshold value of any primary colours；If corresponding to two non-zero grey decision-makings
Only have primary colours corresponding to a non-zero grey decision-making in primary colours and reach luminance saturation state, then will reach the base of luminance saturation state
The grey decision-making of color is converted to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white.
Optionally, in above-mentioned steps 12, according to non-zero grey decision-making, determine whether primary colours reach corresponding to non-zero grey decision-making
Saturation state, particularly, judge whether the non-zero grey decision-making of primary colours is more than the default saturation GTG threshold value of corresponding primary colours, if
It is that the primary colours are then defined as to the primary colours for having reached luminance saturation state；Otherwise, the primary colours are defined as not up to luminance saturation
The primary colours of state.
Optionally, in above-mentioned steps 12, the default saturation GTG threshold value that will reach the primary colours of luminance saturation state is made
For the predetermined luminance output valve of the primary colours；Or according to preset function, the grey decision-making of the primary colours of luminance saturation state will be reached
Be converted to the predetermined luminance output valve of the primary colours.
Optionally, it is defeated in the predetermined luminance that the grey decision-making for having reached the primary colours of luminance saturation state is converted to corresponding primary colours
Go out the brightness output valve of value and white, the value of the chromaticity coordinates presented before and after conversion meets following conditions：△ U'V' value is small
In or equal to predetermined threshold value；Preferably, wherein, the span of predetermined threshold value is [- 0.06 ,+0.06].
It is described in detail below by taking the OLED using RGBW structures as an example.
The embodiment of the present invention can preferably be applied to exist at least in the red in rgb signal, green, blue grey decision-making
The application scenarios for the luminance component that one value is zero, the i.e. embodiment of the present invention can apply to following application scenarios：Signal source
To only exist the application scenarios of red (R) GTG in rgb signal and the rgb signal, signal source is rgb signal and the rgb signal
In only exist the application scenarios of green (G) GTG, signal source is that blue (B) GTG is only existed in rgb signal and the rgb signal
Application scenarios, signal source are that application scenarios, the signal source RGB of R GTGs and G GTGs are only existed in rgb signal and the rgb signal
The application scenarios of R GTGs and B GTGs are only existed in signal and the rgb signal, signal source be in rgb signal and the rgb signal only
The application scenarios of B GTGs and G GTGs be present.
Luminance saturation degree in the embodiment of the present invention can be used to indicate that the grey decision-making of a primary colours levels off to default saturation
The degree of GTG threshold value or the degree more than default saturation GTG threshold value, if the grey decision-making of the primary colours reaches default saturation GTG
Threshold value, then it is considered that the primary colours are the primary colours for having reached luminance saturation state, and the grey decision-making of the primary colours can be more than pre-
If the numerical value of saturation GTG threshold value is as the degree for having reached luminance saturation state；If the grey decision-making of the primary colours is not up to default
Saturation GTG threshold value, then it is considered that the primary colours are the primary colours of not up to luminance saturation state, and can be by the GTG of the primary colours
Value be less than the numerical value of default saturation GTG threshold value as not up to luminance saturation state degree (or when the numerical value is sufficiently small,
Can also be using the numerical value as leveling off to the degree of luminance saturation state).
In embodiments of the present invention, for convenience, the red grey decision-making in rgb signal can be referred to as R GTGs
Or Rin, the green grey decision-making in rgb signal is referred to as G GTGs or Gin, the blue grey decision-making in rgb signal is referred to as G ashes
Rank or Gin；Red luma output valve in RGBW signals after conversion can also be referred to as Rout, by the RGBW signals after conversion
In Green brightness output valve be referred to as Gout, the blue luminences output valve in the RGBW signals after conversion is referred to as Bout, will
The white brightness output valve in RGBW signals after conversion is referred to as Wout。
As a preferred embodiment, only exist red (R) ash in signal source is rgb signal and the rgb signal
Under the application scenarios of rank, the R after conversionoutAnd WoutMeet following condition：
Work as Rin<RthWhen, Rout=RinAnd Wout=0
Work as Rin>RthWhen, Rout≤RinAnd Wout=f (R)in
Wherein, RthTo preset red saturation GTG threshold value, f (x) can be default functional relation.
So, when the red GTG in rgb signal is in RthLater when being intended to saturation, increase white luminance component into
Point so that △ U'V'≤± 0.02, so as to which the brightness of red in the case of low-power consumption is kept, be substantially improved, avoid prior art
The red high brightness saturated phenomenon often occurred.Wherein, U'V' belongs to 1976 chromaticity coordinates systems, and (U', V') is used to characterize one kind
Color.△ U'V' be before changing after chromaticity coordinates U' and V' difference square root sum square.
As another preferred embodiment, G GTGs are only existed in signal source is rgb signal and the rgb signal
Under application scenarios, the G after conversionoutAnd WoutMeet following condition：
Work as Gin<GthWhen, Gout=GinAnd Wout=0
Work as Gin>GthWhen, Gout≤GinAnd Wout=f (G)in
Wherein, GthTo preset green saturation GTG threshold value, f (x) can be default functional relation.
So, when the green GTG in rgb signal is in GthLater when being intended to saturation, increase white luminance component into
Point so that △ U'V'≤± 0.02, so as to which the brightness of green in the case of low-power consumption is kept, be substantially improved, avoid prior art
The green high brightness saturated phenomenon often occurred.Wherein, U'V' belongs to 1976 chromaticity coordinates systems, and (U', V') is used to characterize one kind
Color.△ U'V' be before changing after chromaticity coordinates U' and V' difference square root sum square.
As another preferred embodiment, B GTGs are only existed in signal source is rgb signal and the rgb signal
Under application scenarios, the B after conversionoutAnd WoutMeet following condition：
Work as Bin<BthWhen, Bout=BinAnd Wout=0
Work as Bin>BthWhen, Bout≤BinAnd Wout=f (B)in
Wherein, BinFor the blue grey decision-making of input, BthTo preset green saturation GTG threshold value, f (x) can be default
Functional relation.
So, when the green GTG in rgb signal is in BthLater when being intended to saturation, increase white luminance component into
Point so that △ U'V'≤± 0.02, so as to which the brightness of green in the case of low-power consumption is kept, be substantially improved, avoid prior art
The green high brightness saturated phenomenon often occurred.Wherein, U'V' belongs to 1976 chromaticity coordinates systems, and (U', V') is used to characterize one kind
Color.△ U'V' be before changing after chromaticity coordinates U' and V' difference square root sum square.
As another preferred embodiment, R GTGs and G are only existed in signal source is rgb signal and the rgb signal
Under the application scenarios of GTG, the R after conversionout、GoutAnd WoutMeet following condition：
Work as Rin<RthAnd Gin<GthWhen, Rout=Rin、Gout=GinAnd Wout=0
Work as Rin<RthAnd Gin>GthWhen, Rout=Rin、Gout≤GinAnd Wout=f (G)in
Work as Rin>RthAnd Gin<GthWhen, Rout≤Rin、Gout=GinAnd Wout=f (R)in
Work as Rin>RthAnd Gin>GthWhen, Rout≤Rin、Gout≤GinAnd Wout=min (f (R)in, (f) Gin)
Wherein, RthTo preset red saturation GTG threshold value, GthTo preset green saturation GTG threshold value, f (x) can be pre-
If functional relation, now, WoutFor according to RinWith RthDifference, GinWith GthDifference in minimum value determine.
So, when the red GTG in rgb signal and/or green GTG are being intended to saturation, the brightness of white is increased
The composition of component so that △ U'V'≤± 0.02, it is red and/or green so as in the case of low-power consumption is kept, be substantially improved
Brightness, the red and/or green high brightness saturated phenomenon for avoiding prior art from often occurring.Wherein, U'V' belongs to 1976 colors seat
Mark system, (U', V') are used to characterize a kind of color.△ U'V' be before changing after chromaticity coordinates U' and V' difference square sum
Square root.
As another preferred embodiment, R GTGs and B are only existed in signal source is rgb signal and the rgb signal
Under the application scenarios of GTG, the R after conversionout、BoutAnd WoutMeet following condition：
Work as Rin<RthAnd Bin<BthWhen, Rout=Rin、Bout=BinAnd Wout=0
Work as Rin<RthAnd Bin>BthWhen, Rout=Rin、Bout≤BinAnd Wout=f (B)in
Work as Rin>RthAnd Bin<BthWhen, Rout≤Rin、Bout=BinAnd Wout=f (R)in
Work as Rin>RthAnd Bin>BthWhen, Rout≤Rin、Bout≤BinAnd Wout=min (f (R)in, (f) Bin)
Wherein, RthTo preset red saturation GTG threshold value, BthTo preset blue saturation GTG threshold value, f (x) can be pre-
If functional relation, now, WoutFor according to RinWith RthDifference, BinWith BthDifference in minimum value determine.
So, when the red GTG in rgb signal and/or blue GTG are being intended to saturation, the brightness of white is increased
The composition of component so that △ U'V'≤± 0.02, it is red and/or blueness so as in the case of low-power consumption is kept, be substantially improved
Brightness, avoid red and/or blue highlight degree saturated phenomenon that prior art often occurs.Wherein, U'V' belongs to 1976 colors seat
Mark system, (U', V') are used to characterize a kind of color.△ U'V' be before changing after chromaticity coordinates U' and V' difference square sum
Square root.
As another preferred embodiment, G GTGs and B are only existed in signal source is rgb signal and the rgb signal
Under the application scenarios of GTG, the G after conversionout、BoutAnd WoutMeet following condition：
Work as Gin<GthAnd Bin<BthWhen, Gout=Gin、Bout=BinAnd Wout=0
Work as Gin<GthAnd Bin>BthWhen, Gout=Gin、Bout≤BinAnd Wout=f (B)in
Work as Gin>GthAnd Bin<BthWhen, Gout≤Gin、Bout=BinAnd Wout=f (G)in
Work as Gin>GthAnd Bin>BthWhen, Gout≤Gin、Bout≤BinAnd Wout=min (f (G)in, (f) Bin)
Wherein, GthTo preset green saturation GTG threshold value, BthTo preset blue saturation GTG threshold value, f (x) can be pre-
If functional relation, now, WoutFor according to GinWith GthDifference, BinWith BthDifference in minimum value determine.
So, when the green GTG in rgb signal and/or blue GTG are being intended to saturation, the brightness of white is increased
The composition of component so that △ U'V'≤± 0.02, it is green and/or blueness so as in the case of low-power consumption is kept, be substantially improved
Brightness, avoid green and/or blue highlight degree saturated phenomenon that prior art often occurs.Wherein, U'V' belongs to 1976 colors seat
Mark system, (U', V') are used to characterize a kind of color.△ U'V' be before changing after chromaticity coordinates U' and V' difference square sum
Square root.
It should be noted that in embodiments of the present invention, f (x) functions can be the combination of power function or multiple power functions,
Such as：F (x)=xa；F (x) functions can also be the combination of trigonometric function or multiple trigonometric functions；F (x) functions can also be
The combination of hyperbolic functions or multiple hyperbolic functions；F (x) functions can also be the arbitrary function that other meet above-mentioned condition, here
Repeat no more.
It should be noted that the processing method that rgb signal provided in an embodiment of the present invention is converted to RGBW signals is not only fitted
For tableaux, dynamic menu is also applied for.
It should be noted that in embodiments of the present invention, the processing method of RGBW signals is converted to for performing rgb signal
Device can be integrated in drive control end, such as movement chip SOC or sequential control circuit TCON；I.e. signal source RGB GTGs
Switch to RGBW signals (i.e. RoutGoutBoutWout), according to the difference of grayscale signal, dynamically adjust after converting
RoutGoutBoutWoutGTG, and then control the Gamma circuits of RGBW structures.
It can be seen that RGB provided in an embodiment of the present invention, which turns RGBW algorithms, can be substantially improved the peak brightness of wicket, there is provided
Larger range of luminance dynamic ratio.
Embodiment one：
When signal source is red GTG and RinWhen=200, experiment is drawn, prior art is in 176 GTGs (that is, now Rth=
176) appear above high brightness saturated phenomenon, if only increase red luma, such as lifting 10nits red luma, it is necessary to
Increase power consumption 70W.Using the embodiment of the present invention, by RinGTG is converted to Rout, i.e. Rin=Rth=176；And gradually increase is white
Luminance component composition, the red luma of saturation is converted into white brightness and (substituted by the luminance component of white high full
With red GTG), for display device (such as OLED) display effect, red display brightness quickly increases, due to white
The light combined permeation of sub-pixel for emitting light element is higher, if lifting 10nits brightness, it is thus only necessary to increase power consumption 9W；It can be seen that
The embodiment of the present invention can effectively reduce the power consumption of display device, improve on the premise of display effect and brightness is ensured
Consumer's Experience.
For example, for R, R is worked asin＞ RthWhen, Wout=(Wout-Rth)∧α=(Wout-Rth)∧0.8136.Specific reasoning
Process is：In order to avoid R luminance saturations, it is necessary to increase white luminance component composition so that white luminance component into
Divide gradually increase, its maximum is RthThe 3% of gray-scale intensity, now R chromaticity coordinates deviation is △ U'V'≤± 0.02.Therefore, 0
≤(((Wout-Rth)∧α)/255)∧2.2≤(Rth/255)∧2.2*3% wherein, WoutInterval be [Rth,255].Work as Rth
=176, WoutWhen=255, α=0.8136 is calculated.That is, the output weight by adjusting white brightness value so that before conversion
Colour cast afterwards meets preparatory condition.
Embodiment two：
When signal source is green GTG and GinWhen=222, experiment is drawn, prior art is in 208 GTGs (that is, now Gth=
208) green high brightness saturated phenomenon is appeared above, if only increase Green brightness, such as lifting 10nits Green brightness,
Need to increase power consumption 20W.Using the embodiment of the present invention, by GinGTG is converted to Gout, i.e. Gin=Gth=208；And gradually increase
The composition of the luminance component of white, the Green brightness of saturation is converted into white brightness and (substituted by the luminance component of white
High saturated green GTG), for display device (such as OLED) display effect, green display brightness quickly increases, due to
The light combined permeation of white sub-pixels light-emitting component is higher, if lifting 10nits brightness, it is thus only necessary to increase power consumption 9W；Can
See, the embodiment of the present invention on the premise of display effect and brightness is ensured, can effectively reduce the power consumption of display device, improve
Consumer's Experience.
For example, for G, G is worked asin＞ GthWhen, Wout=(Wout-Gth)∧α=(Wout-Gth)∧1.114.Specific reasoning
Cheng Wei：In order to avoid G luminance saturations, it is necessary to increase the composition of the luminance component of white so that the composition of white luminance component
Gradually increase, its maximum is GthThe 10% of gray-scale intensity, now R chromaticity coordinates deviation is △ U'V'≤± 0.02.Therefore, 0
≤(((Wout-Gth)∧α)/255)∧2.2≤(Gth/255)∧2.2*10% wherein, WoutInterval be [Gth,255].Work as Gth
=208, WoutWhen=255, α=1.114 are calculated.That is, the output weight by adjusting white brightness value so that before conversion
Colour cast afterwards meets preparatory condition.
Embodiment three：
When signal source is blue GTG and BinWhen=144, experiment is drawn, prior art is in 144 GTGs (that is, now Bth=
144) appear above high brightness saturated phenomenon, if only increase blue luminences, such as lifting 10nits blue luminences, it is necessary to
Increase power consumption 200W.Using the embodiment of the present invention, by BinGTG is converted to Bout, i.e. Bin=Bth=144；And gradually increase is white
Luminance component composition, the blue luminences of saturation are converted into white brightness and (substituted by the luminance component of white high full
With blue GTG), for display device (such as OLED) display effect, blue display brightness quickly increases, due to white
The light combined permeation of sub-pixel for emitting light element is higher, if lifting 10nits brightness, it is thus only necessary to increase power consumption 9W；It can be seen that
The embodiment of the present invention can effectively reduce the power consumption of display device, improve on the premise of display effect and brightness is ensured
Consumer's Experience.
For example, for B, B is worked asin＞ BthWhen, Wout=(Wout-Bth)∧α=(Wout-Bth)∧1.055.Specific reasoning
Cheng Wei：In order to avoid B luminance saturations, it is necessary to increase the composition of the luminance component of white so that the composition of white luminance component
Gradually increase, its maximum is BthThe 100% of gray-scale intensity, now R chromaticity coordinates deviation is △ U'V'≤± 0.02.Therefore, 0
≤(((Wout-Bth)∧α)/255)∧2.2≤(Bth/255)∧2.2*100% wherein, WoutInterval be [Bth,255].When
Bth=144, WoutWhen=255, α=1.055 are calculated.That is, the output weight by adjusting white brightness value so that conversion
Front and rear colour cast meets preparatory condition.
It should be noted that in the above-described embodiments, α number ranges can be [0.5,1.5], so that increase white is bright
The composition of degree component can substitute the fractions of three primary colours；It can be seen from the above technical proposal that the embodiment of the present invention can be with
Significantly improve R, G, B luminance saturation problem.Further, in order to be obviously improved R situation, △ U'V' model can be amplified
Enclose, such as △ U'V'≤± 0.06, now, WoutBrightness maxima is RthThe 10% of gray-scale intensity, and α=0.9408, so can
Further improve R saturation problem.
It can be seen from the above technical proposal that when at least one grey decision-making is zero in red, green, blue grey decision-making,
According to non-zero grey decision-making, determine whether primary colours corresponding to the non-zero grey decision-making reach saturation state, and luminance saturation will have been reached
The grey decision-making of the primary colours of state is converted to the brightness output valve of default corresponding primary colours and the brightness output valve of white；Filled in display
In putting, sub-pixel for emitting light element is driven by different size of curtage, and is compared, and white sub-pixels light
The light combined permeation highest (being more than red, blueness, the light combined permeation of green sub-pixel for emitting light element) of element, it is seen then that
In same brightness, the power consumption that driving white sub-pixels light-emitting component expends when luminous is smaller, and driving is red, blue or green
Power consumption spent by pixel light emission element is more；The embodiment of the present invention can utilize white brightness replacement to reach luminance saturation shape
The red blue or green part luma of state, so as to reduce the power consumption of display device, and improve display device into
As effect.
Based on identical technical concept, Fig. 2 shows that the embodiments of the invention provide a kind of processing unit of rgb signal
Structural representation, as shown in Fig. 2 the device includes：
Receiving unit 21, for receiving rgb signal, the three primary colours of the current pixel carried in rgb signal are obtained respectively
Grey decision-making；
Processing unit 22, for when the grey decision-making of at least one primary colours in the grey decision-making of three primary colours is zero, according to non-zero
Grey decision-making, determines whether primary colours corresponding to non-zero grey decision-making reach saturation state, and the primary colours that will reach luminance saturation state
Grey decision-making be converted to corresponding primary colours predetermined luminance output valve and white brightness output valve；Wherein, white brightness output
White brightness corresponding to value is used for the part luma for substituting the primary colours for having reached luminance saturation state；
Converting unit 23, for according to the brightness output valve after conversion, the brightness output valve of white and not up to saturation shape
The grey decision-making of the primary colours of state, rgb signal is converted to the brightness output valve of the three primary colours for carrying current pixel and white
RGBW signals.
Optionally, processing unit 22 is specifically used for：When any two grey decision-making is zero in the grey decision-making of three primary colours, judge
Whether primary colours reach luminance saturation state corresponding to non-zero grey decision-making, if so, will then reach the primary colours of luminance saturation state
Grey decision-making is converted to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white.
Optionally, processing unit 22 is specifically used for：When only one grey decision-making is zero in the grey decision-making of three primary colours, sentence respectively
Whether the primary colours corresponding to two non-zero grey decision-makings that break reach luminance saturation state simultaneously, if so, then that luminance saturation degree is relatively low
Non-zero grey decision-making corresponding to reached the component of luminance saturation state in primary colours and be all converted to the luminance component of white, and profit
Substituted with the white brightness in primary colours corresponding to the higher non-zero grey decision-making of luminance saturation degree and reached luminance saturation state
Part luma, and the grey decision-making of primary colours corresponding to non-zero grey decision-making is converted to the predetermined luminance output valve of corresponding primary colours, wherein,
Luminance saturation degree characterizes the grey decision-making and the difference of its default saturation GTG threshold value of any primary colours；If two non-zero grey decision-makings pair
Only have primary colours corresponding to a non-zero grey decision-making in the primary colours answered and reach luminance saturation state, then will reach luminance saturation state
Primary colours grey decision-making be converted to corresponding primary colours predetermined luminance output valve and white brightness output valve.
Optionally, processing unit 22 is specifically used for：Judge whether the non-zero grey decision-making of primary colours is more than the default of corresponding primary colours
Saturation GTG threshold value, if so, the primary colours to be then defined as to the primary colours for having reached luminance saturation state；Otherwise, the primary colours are determined
To be not up to the primary colours of luminance saturation state.
Optionally, processing unit 22 is specifically used for：The default saturation GTG threshold of the primary colours of luminance saturation state will have been reached
It is worth the predetermined luminance output valve as the primary colours；Or according to preset function, the ash of the primary colours of luminance saturation state will be reached
Rank value is converted to the predetermined luminance output valve of the primary colours.
Optionally, it is defeated in the predetermined luminance that the grey decision-making for having reached the primary colours of luminance saturation state is converted to corresponding primary colours
Go out the brightness output valve of value and white, the value of the chromaticity coordinates presented before and after conversion meets following conditions：△ U'V' value is small
In or equal to predetermined threshold value；Preferably, wherein, the span of predetermined threshold value is [- 0.06 ,+0.06].
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
Instruct the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices so that
A stream in flow chart can be achieved by the instruction of the computing device of the computer or other programmable data processing devices
The function of being specified in journey or multiple flows and/or one square frame of block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices, which provides, to be used to realize the flow or multiple flows and/or block diagram in flow chart
A square frame or multiple square frames in specify function the step of.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of processing method of rgb signal, it is characterised in that this method includes：
Rgb signal is received, obtains the grey decision-making of the three primary colours of the current pixel carried in the rgb signal respectively；
When the grey decision-making of at least one primary colours in the grey decision-making of the three primary colours is zero, according to non-zero grey decision-making, it is determined that described
Whether primary colours corresponding to non-zero grey decision-making reach saturation state, and will reach the grey decision-making conversion of the primary colours of luminance saturation state
The brightness output valve of predetermined luminance output valve and white for corresponding primary colours；Wherein, if there is base corresponding to a non-zero grey decision-making
Color reaches saturation state, then the predetermined luminance that the grey decision-making for the primary colours for having reached luminance saturation state is converted to corresponding primary colours is defeated
Go out the brightness output valve of value and white；If there are primary colours corresponding to two non-zero grey decision-makings to reach saturation state, by luminance saturation
The component for having reached luminance saturation state in primary colours corresponding to the relatively low non-zero grey decision-making of degree is all converted to the brightness of white
Component, the part luma for having reached luminance saturation state in the higher primary colours of luminance saturation degree is substituted using the white brightness,
And the grey decision-making of primary colours corresponding to non-zero grey decision-making is converted to the predetermined luminance output valve of corresponding primary colours；
, will according to the brightness output valve after conversion, the brightness output valve of white and the not up to grey decision-making of the primary colours of saturation state
The rgb signal is converted to the RGBW signals of the brightness output valve of the three primary colours for carrying current pixel and white.
2. processing method as claimed in claim 1, it is characterised in that the ash of the primary colours that luminance saturation state will have been reached
Rank value is converted to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white, including：
When any two grey decision-making is zero in the grey decision-making of the three primary colours, judge whether primary colours reach corresponding to non-zero grey decision-making
To luminance saturation state, if so, the grey decision-making for the primary colours for having reached luminance saturation state then is converted into the default of corresponding primary colours
The brightness output valve of brightness output valve and white.
3. processing method as claimed in claim 1, it is characterised in that the ash of the primary colours that luminance saturation state will have been reached
Rank value is converted to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white, including：
When only one grey decision-making is zero in the grey decision-making of the three primary colours, primary colours corresponding to two non-zero grey decision-makings are judged respectively
Whether simultaneously reach luminance saturation state, if so, then by primary colours corresponding to the relatively low non-zero grey decision-making of luminance saturation degree
The component for reaching luminance saturation state is all converted to white brightness component, and substitutes luminance saturation degree using the white brightness
Reach the part luma of luminance saturation state in primary colours corresponding to higher non-zero grey decision-making, and by the non-zero grey decision-making pair
The grey decision-making for the primary colours answered is converted to the predetermined luminance output valve of corresponding primary colours, wherein, the luminance saturation degree characterizes any
The grey decision-making of primary colours and the difference of its default saturation GTG threshold value；If only have one in primary colours corresponding to described two non-zero grey decision-makings
Primary colours corresponding to individual non-zero grey decision-making reach luminance saturation state, then the grey decision-making that will reach the primary colours of luminance saturation state turns
It is changed to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white.
4. such as the processing method any one of claim 1-3, it is characterised in that it is described according to non-zero grey decision-making, it is determined that
Whether primary colours corresponding to the non-zero grey decision-making reach saturation state, including：
Judge whether the non-zero grey decision-making of the primary colours is more than the default saturation GTG threshold value of corresponding primary colours, if so, then by the base
Color is defined as the primary colours for having reached luminance saturation state；Otherwise, the primary colours are defined as to the primary colours of not up to luminance saturation state.
5. processing method as claimed in claim 4, it is characterised in that the ash of the primary colours that luminance saturation state will have been reached
Rank value is converted to the predetermined luminance output valve of corresponding primary colours, including：
Predetermined luminance output valve of the default saturation GTG threshold value as the primary colours of the primary colours of luminance saturation state will have been reached；Or
Person,
According to preset function, the predetermined luminance that the grey decision-making for the primary colours for having reached luminance saturation state is converted to the primary colours exports
Value.
6. a kind of processing unit of rgb signal, it is characterised in that the device includes：
Receiving unit, for receiving rgb signal, the ash of the three primary colours of the current pixel carried in the rgb signal is obtained respectively
Rank is worth；
Processing unit, for when the grey decision-making of at least one primary colours in the grey decision-making of the three primary colours is zero, according to non-zero ash
Rank is worth, and determines whether primary colours corresponding to the non-zero grey decision-making reach saturation state, and the base that will reach luminance saturation state
The grey decision-making of color is converted to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white；Wherein, if there is a non-zero
Primary colours corresponding to grey decision-making reach saturation state, then the grey decision-making for the primary colours for having reached luminance saturation state are converted into corresponding base
The predetermined luminance output valve of color and the brightness output valve of white；If there are primary colours corresponding to two non-zero grey decision-makings to reach saturation shape
State, then the component for having reached luminance saturation state in primary colours corresponding to the relatively low non-zero grey decision-making of luminance saturation degree is all turned
The luminance component of white is changed to, is substituted using the white brightness in the higher primary colours of luminance saturation degree and has reached luminance saturation shape
The part luma of state, and the grey decision-making of primary colours corresponding to non-zero grey decision-making is converted to the predetermined luminance output valve of corresponding primary colours；
Converting unit, for according to the brightness output valve after conversion, the brightness output valve of white and the not up to base of saturation state
The grey decision-making of color, the rgb signal is converted to the RGBW of the brightness output valve of the three primary colours for carrying current pixel and white
Signal.
7. device as claimed in claim 6, it is characterised in that the processing unit is specifically used for：
When any two grey decision-making is zero in the grey decision-making of the three primary colours, judge whether primary colours reach corresponding to non-zero grey decision-making
To luminance saturation state, if so, the grey decision-making for the primary colours for having reached luminance saturation state then is converted into the default of corresponding primary colours
The brightness output valve of brightness output valve and white.
8. device as claimed in claim 6, it is characterised in that the processing unit is specifically used for：
When only one grey decision-making is zero in the grey decision-making of the three primary colours, primary colours corresponding to two non-zero grey decision-makings are judged respectively
Whether simultaneously reach luminance saturation state, if so, then by primary colours corresponding to the relatively low non-zero grey decision-making of luminance saturation degree
The component for reaching luminance saturation state is all converted to the luminance component of white, and substitutes luminance saturation journey using the white brightness
Reach the part luma of luminance saturation state in primary colours corresponding to the higher non-zero grey decision-making of degree, and by the non-zero grey decision-making
The grey decision-making of corresponding primary colours is converted to the predetermined luminance output valve of corresponding primary colours, wherein, the luminance saturation degree, which characterizes, appoints
The grey decision-making of meaning primary colours and the difference of its default saturation GTG threshold value；If in primary colours corresponding to described two non-zero grey decision-makings only
Primary colours corresponding to one non-zero grey decision-making reach luminance saturation state, then will reach the grey decision-making of the primary colours of luminance saturation state
Be converted to the predetermined luminance output valve of corresponding primary colours and the brightness output valve of white.
9. such as the device any one of claim 6-8, it is characterised in that the processing unit is specifically used for：
Judge whether the non-zero grey decision-making of the primary colours is more than the default saturation GTG threshold value of corresponding primary colours, if so, then by the base
Color is defined as the primary colours for having reached luminance saturation state；Otherwise, the primary colours are defined as to the primary colours of not up to luminance saturation state.
10. device as claimed in claim 9, it is characterised in that the processing unit is specifically used for：
Predetermined luminance output valve of the default saturation GTG threshold value as the primary colours of the primary colours of luminance saturation state will have been reached；Or
Person, according to preset function, the predetermined luminance that the grey decision-making for the primary colours for having reached luminance saturation state is converted to the primary colours exports
Value.
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| CN101114423A (en) * | 2006-07-24 | 2008-01-30 | 三星电子株式会社 | Multi-color display device and driving method thereof |
| CN101887681A (en) * | 2010-07-16 | 2010-11-17 | 友达光电股份有限公司 | Red-green-blue-white display device and control method |
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| CN1882103B (en) * | 2005-04-04 | 2010-06-23 | 三星电子株式会社 | Systems and methods for implementing improved gamut mapping algorithms |
| KR102048925B1 (en) * | 2012-12-28 | 2019-11-27 | 삼성디스플레이 주식회사 | Display Device including RGBW Sub-Pixel and Method of Driving thereof |
| KR102019679B1 (en) * | 2013-08-28 | 2019-09-10 | 삼성디스플레이 주식회사 | Data processing apparatus, display apparatus including the same, and method for gamut mapping |
| TWI490849B (en) * | 2013-12-23 | 2015-07-01 | Au Optronics Corp | Method for controlling display |
| CN104023219B (en) * | 2014-05-30 | 2015-09-09 | 京东方科技集团股份有限公司 | A kind of rgb signal is to the image conversion method of RGBW signal and device |
| TWI547931B (en) * | 2014-08-11 | 2016-09-01 | 友達光電股份有限公司 | Method for controlling display |
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