CN105336288B - A kind of rgb signal is to the conversion method of RGBW signals, device and TV - Google Patents
A kind of rgb signal is to the conversion method of RGBW signals, device and TV Download PDFInfo
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Abstract
The present invention is applied to display technology field, there is provided a kind of rgb signal includes to the conversion method of RGBW signals, device and TV, methods described：The rgb signal of input is received, and the rgb signal is converted to the normalization RGB brightness input values in corresponding RGB domains；According to the normalization RGB brightness input value in the RGB domains and the brightness regulation coefficient of RGBW screens, the RGB brightness input values in RGBW domains are calculated；According to the pixel arrangement of RGBW screens and the RGB brightness input values in the RGBW domains, the RGB brightness output valve and W brightness output valves in RGBW domains is calculated；The RGB brightness output valve in the RGBW domains and W brightness output valves are converted into corresponding RGBW signals and exported.The present invention, rgb signal can be converted to RGBW signals, avoid the RGBW screens that rgb signal is directly applied to pentile structures, can cause image definition decline, cross-color the problem of.
Description
Technical field
The invention belongs to display technology field, more particularly to a kind of rgb signal to the conversion method of RGBW signals, device and
TV.
Background technology
Due to the resolution ratio more and more higher of the displays such as liquid crystal, at present, the screen demand of the ultrahigh resolution such as 4K2K, 8K4K
All occur.But with the raising of resolution ratio, liquid crystal, Organic Electricity laser display (Organic Light-Emitting
Diode, OLED) aperture opening ratio of each pixel is now dropped with being lifted out for resolution ratio in display, in identical backlight illumination etc.
Under conditions of, screen intensity declines.
At present, the RGBW screens based on pentile structures have had certain technical advantage on the market.In general
The pixel arrangement of the RGBW screens of pentile structures is as shown in Figure 1：Color is not that three continuous sub-pixels of white are respectively
R sub-pixels, G sub-pixel and B sub-pixels, color are that the sub-pixel of white is white sub-pixels, and the length-width ratio of each sub-pixel is
2:1, therefore each two sub-pixel group, than traditional few pixel of RGB three primary colours screens, can effectively subtract into a pixel
The number of small sub-pixel, aperture opening ratio is improved, reduce the cost of drive circuit, simultaneously because white sub-pixels do not have optical filter, can
To increase the brightness of screen.
However, at present, general video signal interface transmission is all rgb signal, if rgb signal is directly applied to
The RGBW screens of pentile structures can cause image information to lack, and image definition decline, color of image distortion etc. occur and ask
Topic.
The content of the invention
The embodiments of the invention provide a kind of rgb signal to the conversion method of RGBW signals, device and TV, it is intended to solves
The RGBW screens that prior art directly applies to rgb signal pentile structures can cause image information to lack, and it is clear image occur
The problem of clear degree declines, color of image distortion.
On the one hand, there is provided a kind of conversion method of rgb signal to RGBW signals, methods described include：
The rgb signal of input is received, and the rgb signal is converted to the normalization RGB brightness input in corresponding RGB domains
Value；
According to the normalization RGB brightness input value in the RGB domains and the brightness regulation coefficient of RGBW screens, it is calculated
The RGB brightness input values in RGBW domains；
According to the pixel arrangement of RGBW screens and the RGB brightness input values in the RGBW domains, RGBW domains are calculated
RGB brightness output valve and W brightness output valves；
The RGB brightness output valve in the RGBW domains and W brightness output valves are converted into corresponding RGBW signals.
Further, it is described according to the normalization RGB brightness input value in the RGB domains and the brightness regulation of RGBW screens
Coefficient, the RGB brightness input values in RGBW domains, which are calculated, to be included：
According to the normalization RGB brightness input value in the RGB domains and the brightness regulation coefficient of RGBW screens, it is calculated
Brightness amplification coefficient；
According to the normalization RGB brightness input value in the RGB domains and the brightness amplification coefficient, RGBW domains are calculated
RGB brightness input values.
Further, it is described according to the pixel arrangement of RGBW screens and the RGB brightness input values in the RGBW domains, meter
Calculating the RGB brightness output valve for obtaining RGBW domains and W brightness output valves includes：
According to the pixel arrangement of RGBW screens, the sub-pixel of RGBW screens is divided into colour element C and white pixel
W, wherein, using a white sub-pixels of RGBW screens as a white pixel W, by tri- colors of RGB of RGBW screens
Sub-pixel is as a colour element C；
According to the RGB brightness input values in RGBW domains, the RGB brightness output of pixel corresponding to colour element C is calculated
Value and the W brightness output valves of pixel corresponding to white pixel W.
Further, the RGB brightness input values according to RGBW domains, are calculated pixel corresponding to colour element C
RGB brightness output valve and white pixel W corresponding to the W brightness output valves of pixel include：
For pixel corresponding to colour element C, the minimum value in the RGB brightness input values in 0 or RGBW domains is made into work
For the first W brightness output valves of pixel corresponding to colour element C；
The difference of the RGB brightness input value in RGBW domains and the first W brightness output valves of the corresponding pixels of colour element C is made
For the first RGB brightness output valves of pixel corresponding to colour element C；
If the first W brightness output valve of pixel corresponding to colour element C is more than pixel corresponding to colour element C
The maximum of first RGB brightness output valves, then calculate the first W brightness output valve of pixel corresponding to colour element C and colour
Difference between the maximum of first RGB brightness output valves of pixel corresponding to pixel C, by pixel corresponding to colour element C
RGB brightness output valve of the first RGB brightness output valve and the difference sum of point as the corresponding pixels of colour element C,
Using the difference of the first W brightness output valve of pixel corresponding to colour element C and difference pixel corresponding as colour element C
The W brightness output valves of point；
Otherwise, using the first RGB brightness output valve of pixel corresponding to colour element C as picture corresponding to colour element C
The RGB brightness output valves of vegetarian refreshments, it is corresponding using the first W brightness output valve of pixel corresponding to colour element C as colour element C
Pixel W brightness output valves；
For pixel corresponding to white pixel W, using the minimum value in the RGB brightness input values in RGBW domains as white picture
The W brightness output valves of pixel corresponding to plain W；
By the difference between the W brightness output valves of the RGB brightness input value in RGBW domains pixel corresponding with white pixel W
RGB brightness output valves as pixel corresponding to white pixel W.
On the other hand, there is provided a kind of conversion equipment of rgb signal to RGBW signals, described device include：
First RGB brightness input value acquiring units, for receiving the rgb signal of input, and the rgb signal is converted to
The normalization RGB brightness input values in corresponding RGB domains；
2nd RGB brightness input value acquiring units, for the normalization RGB brightness input value according to the RGB domains and
The brightness regulation coefficient of RGBW screens, the RGB brightness input values in RGBW domains are calculated；
RGBW brightness output valve acquiring units, for the pixel arrangement according to RGBW screens and the RGBW domains
RGB brightness input values, the RGB brightness output valve and W brightness output valves in RGBW domains is calculated；
RGBW signal acquiring units, for the RGB brightness output valve in the RGBW domains and W brightness output valves to be converted to pair
The RGBW signals answered.
Further, the 2nd RGB brightness input value acquiring units include：
Amplification coefficient acquisition module, for the normalization RGB brightness input value according to the RGB domains and RGBW screens
Brightness regulation coefficient, brightness amplification coefficient is calculated；
2nd RGB brightness input value acquisition modules, for the normalization RGB brightness input value according to the RGB domains and
The brightness amplification coefficient, the RGB brightness input values in RGBW domains are calculated.
Further, the RGBW brightness output valve acquiring unit includes：
Sub-pixel division module, for the pixel arrangement according to RGBW screens, the sub-pixel of RGBW screens is divided into
Colour element C and white pixel W, wherein, using a white sub-pixels of RGBW screens as a white pixel W, by RGBW
The sub-pixel of tri- colors of RGB of screen is as a colour element C；
RGBW brightness output valve acquisition modules, for the RGB brightness input values according to RGBW domains, colour element is calculated
The W brightness output valves of pixel corresponding to the RGB brightness output valve and white pixel W of pixel corresponding to C.
Further, the RGBW brightness output valve acquisition module includes：
First W brightness output valve determination sub-modules, for for pixel corresponding to colour element C, by 0 or RGBW domains
RGB brightness input values in minimum value make the first W brightness output valves as pixel corresponding to colour element C；
First RGB brightness output valve determination sub-modules, for by C pairs of the RGB brightness input value in RGBW domains and colour element
First RGB brightness output valve of the difference of first W brightness output valves of the pixel answered as pixel corresponding to colour element C；
Colored RGBW brightness output valve determination sub-module, if the first W brightness for pixel corresponding to colour element C
Output valve is more than the maximum of the first RGB brightness output valves of pixel corresponding to colour element C, then calculates C pairs of colour element
The maximum of first RGB brightness output valves of the first W brightness output valve pixel corresponding with colour element C for the pixel answered
Between difference, using the first RGB brightness output valve of pixel corresponding to colour element C and the difference sum as color images
The RGB brightness output valves of pixel corresponding to plain C, by the first W brightness output valve of pixel corresponding to colour element C with it is described
W brightness output valve of the difference of difference as pixel corresponding to colour element C；Otherwise, by pixel corresponding to colour element C
RGB brightness output valve of the first RGB brightness output valve as pixel corresponding to colour element C, by picture corresponding to colour element C
W brightness output valve of the first W brightness output valve of vegetarian refreshments as pixel corresponding to colour element C；
W brightness output valve determination sub-modules, for for pixel corresponding to white pixel W, by the RGB brightness in RGBW domains
W brightness output valve of the minimum value as pixel corresponding to white pixel W in input value；
White RGB brightness output valve determination sub-module, for by W pairs of the RGB brightness input value in RGBW domains and white pixel
RGB brightness output valve of the difference as pixel corresponding to white pixel W between the W brightness output valves for the pixel answered.
Another aspect, there is provided a kind of TV, the TV include rgb signal as described above to the converting means of RGBW signals
Put.
In the embodiment of the present invention, rgb signal can be converted to RGBW signals, avoid and directly apply to rgb signal
The RGBW screens of pentile structures, can cause image definition to decline, the problem of cross-color.In addition, turn by rgb signal
During being changed to RGBW signals, the pixel arrangement of the RGBW screens of pentile structures is taken into full account, has been arrived for RGB
RGBW conversion, for pixel corresponding to colour element C, increase rgb value as far as possible when RGB is transformed into RGBW, reduce W's
Value；Conversely, pixel corresponding to white pixel W, being tried one's best when RGB is transformed into RGBW increases W value, reduces RGB value.Connecing
In the sub-pixel Rendering algorithms to get off, it can obtain more truly, actual definition is higher, the more real image of color.
Brief description of the drawings
Fig. 1 is the pixel arrangement schematic diagram of the RGBW screens of in general pentile structures；
Fig. 2 be the embodiment of the present invention one provide rgb signal to the conversion method of RGBW signals implementation process figure；
Fig. 3 is the pixel arrangement schematic diagram for the RGBW screens that the embodiment of the present invention one provides；
Fig. 4 be the embodiment of the present invention two provide rgb signal to the conversion equipment of RGBW signals structured flowchart.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In embodiments of the present invention, the normalization RGB brightness that the rgb signal of reception is first converted to corresponding RGB domains is defeated
Enter value；Further according to the normalization RGB brightness input value in the RGB domains and the brightness regulation coefficient of RGBW screens, it is calculated
The RGB brightness input values in RGBW domains；Then inputted according to the RGB brightness in the pixel arrangement of RGBW screens and the RGBW domains
Value, the RGB brightness output valve and W brightness output valves in RGBW domains is calculated；Finally by the RGB brightness output valves in the RGBW domains
Corresponding RGBW signals are converted to W brightness output valves.
It is described in detail below in conjunction with realization of the specific embodiment to the present invention：
Embodiment one
Fig. 2 show the embodiment of the present invention one provide rgb signal to the conversion method of RGBW signals implementation process, in detail
State as follows：
In step s 201, the rgb signal of input is received, and the rgb signal is converted to the normalizing in corresponding RGB domains
Change RGB brightness input values.
In embodiments of the present invention, the conversion equipment of rgb signal to RGBW signals receives RGB by video signal interface
After signal, the rgb signal is first converted into corresponding RGB brightness input values Rin、Gin、Bin, then the RGB brightness is inputted
Value Rin、Gin、BinIt is normalized respectively, obtains RGB brightness input values Rin、Gin、BinNormalization RGB brightness input values
R2、G2、B2。
Specifically, R2, G2, B2 meet equation below respectively：
Formula (1)
Formula (2)
Formula (3)
Wherein, y is the gamma curve index of RGBW screens.
Wherein, Rin、Gin、BinFor the linear domain brightness value between 0 to 255, R2, G2, B2 are the linear domain between 0 to 1
Brightness value.
In step S202, according to the normalization RGB brightness input value in the RGB domains and the brightness regulation of RGBW screens
Coefficient, the RGB brightness input values in RGBW domains are calculated.
In embodiments of the present invention, the brightness regulation coefficient Wscale of screen is white sub-pixels W maximum brightness value LW
With the maximum brightness value L of tri- color sub-pixels of R, G, BR、LG、LBThe ratio of sum, as shown in formula (4)：
Formula (4)
Wherein, for specified RGBW screens, brightness regulation coefficient Wscale is a fixed value.
The conversion equipment of rgb signal to RGBW signals can get the brightness regulation coefficient Wscale of specified screen, so
Afterwards according to the normalization RGB brightness input value and RGBW screen intensity adjustment factors in the step S101 RGB domains being converted to
Wscale, a brightness amplification coefficient is obtained, it is finally, defeated according to the normalization RGB brightness in the step S101 RGB domains being converted to
Enter value and the brightness amplification coefficient, obtain the RGB brightness input values in RGBW domains.
Specifically, meet formula between RGB brightness input value R2, G2, B2 and brightness regulation coefficient Wscale is normalized
(5) when, shown in calculating brightness amplification coefficient s formula such as formula (6), otherwise, brightness amplification coefficient s formula such as formula is calculated
(7) shown in.
max(R2,G2,B2)>(1+Wscale) * min (R2, G2, B2) formula (5)
S=max (R2, G2, B2)/(max (R2, G2, B2)-Wscale*min (R2, G2, B2)) formula (6)
S=1+Wscale formula (7)
After brightness amplification coefficient s is calculated, you can defeated according to the normalization RGB brightness in brightness amplification coefficient s and RGB domains
Enter value, RGB brightness input value R3, G3, the B3 in RGBW domains is calculated, specific formula is shown in formula (8), (9) and (10).
R3=R2*S formula (8)
G3=G2*S formula (9)
B3=B2*S formula (10)
In step S203, according to the pixel arrangement of RGBW screens and the RGB brightness input values in the RGBW domains, meter
Calculation obtains the RGB brightness output valve and W brightness output valves in RGBW domains.
In embodiments of the present invention, rgb signal is to the conversion equipment of RGBW signals first according to the RGBW screens shown in Fig. 1
Pixel arrangement, the sub-pixel of RGBW screens is divided into colour element C and white pixel W, wherein, by the one of RGBW screens
Individual white sub-pixels are as a white pixel W, using the sub-pixel of tri- colors of RGB of RGBW screens as a colour element
C, after division is good, for the pixel arrangement of RGBW screens as shown in figure 3, wherein, C represents colored rgb pixel, W represents white pixel.
Further according to the RGB brightness input values in RGBW domains, the RGB brightness output of pixel corresponding to colour element C is calculated
Value and the W brightness output valves of pixel corresponding to white pixel W.
Specifically, the RGB brightness of pixel is defeated according to corresponding to the RGB brightness input value in RGBW domains calculates colour element C
When going out the W brightness output valves of pixel corresponding to value and white pixel W, for pixel corresponding to colour element C, keep as far as possible
The RGB brightness input values in RGB domains, and reduce W brightness output valves；For pixel corresponding to white pixel W, it is bright to increase W as far as possible
Output valve is spent, and reduces RGB brightness output valves.
Detailed, for pixel corresponding to colour element C, by the minimum in the RGB brightness input values in 0 or RGBW domains
Value makes the first W brightness output valves as pixel corresponding to colour element C；By the RGB brightness input value in RGBW domains and colour
First RGB brightness of the difference of first W brightness output valves of pixel corresponding to pixel C as pixel corresponding to colour element C
Output valve；If the first W brightness output valve of pixel corresponding to colour element C is more than pixel corresponding to colour element C
The maximum of first RGB brightness output valves, then calculate the first W brightness output valve of pixel corresponding to colour element C and colour
Difference between the maximum of first RGB brightness output valves of pixel corresponding to pixel C, by pixel corresponding to colour element C
RGB brightness output valve of the first RGB brightness output valve and the difference sum of point as the corresponding pixels of colour element C,
Using the difference of the first W brightness output valve of pixel corresponding to colour element C and difference pixel corresponding as colour element C
The W brightness output valves of point；Otherwise, using the first RGB brightness output valve of pixel corresponding to colour element C as colour element C
The RGB brightness output valves of corresponding pixel, using the first W brightness output valve of pixel corresponding to colour element C as colour
The W brightness output valves of pixel corresponding to pixel C；
For pixel corresponding to white pixel W, using the minimum value in the RGB brightness input values in RGBW domains as white picture
The W brightness output valves of pixel corresponding to plain W；By the RGB brightness input value in RGBW domains pixel corresponding with white pixel W
W brightness output valve of the difference as pixel corresponding to white pixel W between W brightness output valves.
Described how according to corresponding to the RGB brightness input value in RGBW domains calculates colour element C with formula below
The W brightness output valves of pixel corresponding to the RGB brightness output valve and white pixel W of pixel：
For pixel corresponding to colour element C：
1) the W brightness output valves w of the pixel, is soughtout
If max (R3, G3, B3)<255, then the W brightness output valves w of the pixelout=0；
Otherwise, wout=min (R3, G3, B3)
2) the RGB brightness output valves R of the pixel, is soughtout、Gout、Bout
Wherein, Rout=R3-Wout；Gout=G3-Wout；Bout=B3-Wout
If 3), woutWhen bigger, w is realizedoutTo Rout、Gout、BoutTransfer
If Wout>max(Rout,Gout,Bout), then Diff=Wout-max(Rout,Gout,Bout)；
And make：Rout=Rout+Diff；Gout=Gout+Diff；Bout=Bout+Diff；Wout=Wout-Diff；
Otherwise：Make：Rout=Rout；Gout=Gout；Bout=Bout；Wout=Wout。
For pixel corresponding to white pixel W：
1) the W brightness output valves w of the pixel, is soughtout
Wout=min (R3, G3, B3)；
2) the RGB brightness output valves R of the pixel, is soughtout、Gout、Bout
Rout=R3-Wout；Gout=G3-Wout；Bout=B3-Wout。
In step S204, the RGB brightness output valve in the RGBW domains and W brightness output valves are converted into corresponding RGBW
Signal.
In embodiments of the present invention, rgb signal to the conversion equipment of RGBW signals Rout、Gout、Bout、WoutBe converted to pair
The RGBW signals answered, the brightness output valve of the RGBW signalsG-out, B-out, W-out be 0 to
Linear domain brightness value between 255.
Wherein, Rout、Gout、Bout、WoutFor example following formula of transformational relation between R-out, G-out, B-out, W-out
It is shown：
Wherein, y is the gamma curve index of RGBW screens.
The present embodiment, rgb signal can be converted to RGBW signals, avoid and rgb signal is directly applied into pentile
The RGBW screens of structure, the problem of image fault can be caused.In addition, during rgb signal is converted into RGBW signals, fill
Point consider the pixel arrangement of the RGBW screens of pentile structures, the conversion for RGB to RGBW, for C pairs of colour element
The pixel answered, increase rgb value as far as possible when RGB is transformed into RGBW, reduce W value；Conversely, pixel corresponding to white pixel W
Point, increase W value as far as possible when RGB is transformed into RGBW, reduce RGB value., can be with ensuing sub-pixel Rendering algorithms
Obtain more truly, actual definition is higher, the more real image of color.
Can one of ordinary skill in the art will appreciate that realizing that all or part of step in the various embodiments described above method is
To instruct the hardware of correlation to complete by program, corresponding program can be stored in a computer read/write memory medium
In, described storage medium, such as ROM/RAM, disk or CD.
Embodiment two
Fig. 4 shows the rgb signal of the offer of the embodiment of the present invention two to the concrete structure frame of the conversion equipment of RGBW signals
Figure, for convenience of description, illustrate only the part related to the embodiment of the present invention.The device can be built in it is soft in TV
The unit of part unit, hardware cell or software and hardware combining, the device 4 include：First RGB brightness input values acquiring unit 41,
2nd RGB brightness input values acquiring unit 42, RGBW brightness output valves acquiring unit 43 and RGBW signal acquiring units 44.
Wherein, the first RGB brightness input values acquiring unit 41, for receiving the rgb signal of input, and the RGB is believed
The normalization RGB brightness input values in RGB domains corresponding to number being converted to；
2nd RGB brightness input values acquiring unit 42, for the normalization RGB brightness input value according to the RGB domains with
And the brightness regulation coefficient of RGBW screens, the RGB brightness input values in RGBW domains are calculated；
RGBW brightness output valves acquiring unit 43, for the pixel arrangement according to RGBW screens and the RGBW domains
RGB brightness input values, the RGB brightness output valve and W brightness output valves in RGBW domains is calculated；
RGBW signal acquiring units 44, for the RGB brightness output valve in the RGBW domains and W brightness output valves to be converted to
Corresponding RGBW signals.
Specifically, the 2nd RGB brightness input values acquiring unit 42 includes：
Amplification coefficient acquisition module, for the normalization RGB brightness input value according to the RGB domains and RGBW screens
Brightness regulation coefficient, brightness amplification coefficient is calculated；
2nd RGB brightness input value acquisition modules, for the normalization RGB brightness input value according to the RGB domains and
The brightness amplification coefficient, the RGB brightness input values in RGBW domains are calculated.
Specifically, the RGBW brightness output valve acquiring unit 43 includes：
Sub-pixel division module, for the pixel arrangement according to RGBW screens, the sub-pixel of RGBW screens is divided into
Colour element C and white pixel W, wherein, using a white sub-pixels of RGBW screens as a white pixel W, by RGBW
The sub-pixel of tri- colors of RGB of screen is as a colour element C；
RGBW brightness output valve acquisition modules, for the RGB brightness input values according to RGBW domains, colour element is calculated
The W brightness output valves of pixel corresponding to the RGB brightness output valve and white pixel W of pixel corresponding to C.
Specifically, the RGBW brightness output valve acquisition module includes：
First W brightness output valve determination sub-modules, for for pixel corresponding to colour element C, by 0 or RGBW domains
RGB brightness input values in minimum value make the first W brightness output valves as pixel corresponding to colour element C；
First RGB brightness output valve determination sub-modules, for by C pairs of the RGB brightness input value in RGBW domains and colour element
First RGB brightness output valve of the difference of first W brightness output valves of the pixel answered as pixel corresponding to colour element C；
Colored RGBW brightness output valve determination sub-module, if the first W brightness for pixel corresponding to colour element C
Output valve is more than the maximum of the first RGB brightness output valves of pixel corresponding to colour element C, then calculates C pairs of colour element
The maximum of first RGB brightness output valves of the first W brightness output valve pixel corresponding with colour element C for the pixel answered
Between difference, using the first RGB brightness output valve of pixel corresponding to colour element C and the difference sum as color images
The RGB brightness output valves of pixel corresponding to plain C, by the first W brightness output valve of pixel corresponding to colour element C with it is described
W brightness output valve of the difference of difference as pixel corresponding to colour element C；Otherwise, by pixel corresponding to colour element C
RGB brightness output valve of the first RGB brightness output valve as pixel corresponding to colour element C, by picture corresponding to colour element C
W brightness output valve of the first W brightness output valve of vegetarian refreshments as pixel corresponding to colour element C；
W brightness output valve determination sub-modules, for for pixel corresponding to white pixel W, by the RGB brightness in RGBW domains
W brightness output valve of the minimum value as pixel corresponding to white pixel W in input value；
White RGB brightness output valve determination sub-module, for by W pairs of the RGB brightness input value in RGBW domains and white pixel
RGB brightness output valve of the difference as pixel corresponding to white pixel W between the W brightness output valves for the pixel answered.
The conversion equipment of rgb signal provided in an embodiment of the present invention to RGBW signals can be applied in foregoing corresponding method
In embodiment one, details will not be repeated here referring to the description of above-described embodiment one.
It is worth noting that, in said system embodiment, included unit is simply drawn according to function logic
Point, but above-mentioned division is not limited to, as long as corresponding function can be realized；In addition, each functional unit is specific
Title is also only to facilitate mutually distinguish, the protection domain being not intended to limit the invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of rgb signal is to the conversion method of RGBW signals, it is characterised in that methods described includes：
The rgb signal of input is received, and the rgb signal is converted to the normalization RGB brightness input values in corresponding RGB domains；
According to the normalization RGB brightness input value in the RGB domains and the brightness regulation coefficient of RGBW screens, RGBW is calculated
The RGB brightness input values in domain, it is specially：According to the normalization RGB brightness input value in the RGB domains and the brightness of RGBW screens
Adjustment factor, brightness amplification coefficient is calculated；According to the normalization RGB brightness input value in the RGB domains and the brightness
Amplification coefficient, the RGB brightness input values in RGBW domains are calculated；
According to the pixel arrangement of RGBW screens and the RGB brightness input values in the RGBW domains, the RGB in RGBW domains is calculated
Brightness output valve and W brightness output valves；
The RGB brightness output valve in the RGBW domains and W brightness output valves are converted into corresponding RGBW signals.
2. the method as described in claim 1, it is characterised in that the pixel arrangement according to RGBW screens and described
The RGB brightness input values in RGBW domains, the RGB brightness output valve and W brightness output valves that RGBW domains are calculated include：
According to the pixel arrangement of RGBW screens, the sub-pixel of RGBW screens is divided into colour element C and white pixel W, its
In, using a white sub-pixels of RGBW screens as a white pixel W, by the sub- picture of tri- colors of RGB of RGBW screens
Element is used as a colour element C；
According to the RGB brightness input values in RGBW domains, be calculated pixel corresponding to colour element C RGB brightness output valve and
The W brightness output valves of pixel corresponding to white pixel W.
3. method as claimed in claim 2, it is characterised in that the RGB brightness input values according to RGBW domains, be calculated
The W brightness output valves of pixel include corresponding to the RGB brightness output valve and white pixel W of pixel corresponding to colour element C：
For pixel corresponding to colour element C, the minimum value in the RGB brightness input values in 0 or RGBW domains is made as coloured silk
First W brightness output valves of pixel corresponding to color pixel C；
Using the difference of the RGB brightness input value in RGBW domains and the first W brightness output valves of the corresponding pixels of colour element C as coloured silk
First RGB brightness output valves of pixel corresponding to color pixel C；
If the first W brightness output valve of pixel corresponding to colour element C is more than first of pixel corresponding to colour element C
The maximum of RGB brightness output valves, then calculate the first W brightness output valve of pixel corresponding to colour element C and colour element C
Difference between the maximum of first RGB brightness output valves of corresponding pixel, by of pixel corresponding to colour element C
The RGB brightness output valves of one RGB brightness output valve and the difference sum as the corresponding pixels of colour element C, by colour
The W of first W brightness output valve of pixel corresponding to pixel C and the difference of the difference as the corresponding pixels of colour element C
Brightness output valve；
Otherwise, using the first RGB brightness output valve of pixel corresponding to colour element C as pixel corresponding to colour element C
RGB brightness output valves, using the first W brightness output valve of pixel corresponding to colour element C as picture corresponding to colour element C
The W brightness output valves of vegetarian refreshments；
For pixel corresponding to white pixel W, using the minimum value in the RGB brightness input values in RGBW domains as white pixel W
The W brightness output valves of corresponding pixel；
Using the difference between the W brightness output valves of the RGB brightness input value in RGBW domains pixel corresponding with white pixel W as
The RGB brightness output valves of pixel corresponding to white pixel W.
4. a kind of rgb signal is to the conversion equipment of RGBW signals, it is characterised in that described device includes：
First RGB brightness input value acquiring units, be converted to correspondingly for receiving the rgb signal of input, and by the rgb signal
RGB domains normalization RGB brightness input values；
2nd RGB brightness input value acquiring units, for the normalization RGB brightness input value and RGBW according to the RGB domains
The brightness regulation coefficient of screen, the RGB brightness input values in RGBW domains are calculated, are specially：According to the normalization in the RGB domains
The brightness regulation coefficient of RGB brightness input value and RGBW screens, is calculated brightness amplification coefficient；According to the RGB domains
RGB brightness input value and the brightness amplification coefficient are normalized, the RGB brightness input values in RGBW domains are calculated；
RGBW brightness output valve acquiring units, the RGB for the pixel arrangement according to RGBW screens and the RGBW domains are bright
Input value is spent, the RGB brightness output valve and W brightness output valves in RGBW domains is calculated；
RGBW signal acquiring units, corresponding to the RGB brightness output valve in the RGBW domains and W brightness output valves are converted to
RGBW signals.
5. device as claimed in claim 4, it is characterised in that the RGBW brightness output valve acquiring unit includes：
Sub-pixel division module, for the pixel arrangement according to RGBW screens, the sub-pixel of RGBW screens is divided into colour
Pixel C and white pixel W, wherein, using a white sub-pixels of RGBW screens as a white pixel W, by RGBW screens
Tri- colors of RGB sub-pixel as a colour element C；
RGBW brightness output valve acquisition modules, for the RGB brightness input values according to RGBW domains, C pairs of colour element is calculated
The W brightness output valves of pixel corresponding to the RGB brightness output valve and white pixel W of the pixel answered.
6. device as claimed in claim 5, it is characterised in that the RGBW brightness output valve acquisition module includes：
First W brightness output valve determination sub-modules, for for pixel corresponding to colour element C, by 0 or RGBW domains
Minimum value in RGB brightness input values makes the first W brightness output valves as pixel corresponding to colour element C；
First RGB brightness output valve determination sub-modules, for the RGB brightness input value in RGBW domains is corresponding with colour element C
First RGB brightness output valve of the difference of first W brightness output valves of pixel as pixel corresponding to colour element C；
Colored RGBW brightness output valve determination sub-module, if the first W brightness for pixel corresponding to colour element C exports
Value is then calculated corresponding to colour element C more than the maximum of the first RGB brightness output valves of pixel corresponding to colour element C
Between the maximum of first RGB brightness output valves of the first W brightness output valve pixel corresponding with colour element C of pixel
Difference, using the first RGB brightness output valve of pixel corresponding to colour element C and the difference sum as colour element C
The RGB brightness output valves of corresponding pixel, by the first W brightness output valve of pixel corresponding to colour element C and the difference
W brightness output valve of the difference of value as pixel corresponding to colour element C；Otherwise, by of pixel corresponding to colour element C
RGB brightness output valve of the one RGB brightness output valve as pixel corresponding to colour element C, by pixel corresponding to colour element C
W brightness output valve of the first W brightness output valve of point as pixel corresponding to colour element C；
W brightness output valve determination sub-modules, for for pixel corresponding to white pixel W, the RGB brightness in RGBW domains to be inputted
W brightness output valve of the minimum value as pixel corresponding to white pixel W in value；
White RGB brightness output valve determination sub-module, for the RGB brightness input value in RGBW domains is corresponding with white pixel W
RGB brightness output valve of the difference as pixel corresponding to white pixel W between the W brightness output valves of pixel.
7. a kind of TV, it is characterised in that the TV includes the rgb signal as described in any one of claim 4 to 6 to RGBW
The conversion equipment of signal.
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| CN106791755B (en) * | 2016-12-27 | 2018-11-23 | 武汉华星光电技术有限公司 | A kind of RGBW pixel rendering device and method |
| US10417976B2 (en) | 2017-03-22 | 2019-09-17 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Pixel rendering method and pixel rendering device |
| CN106875923B (en) * | 2017-03-22 | 2019-02-01 | 武汉华星光电技术有限公司 | A kind of pixel rendering method and pixel rendering device |
| CN108877698A (en) * | 2017-05-08 | 2018-11-23 | 北京小米移动软件有限公司 | A kind of method and apparatus showing image |
| CN107358904B (en) * | 2017-07-25 | 2020-06-02 | 上海顺久电子科技有限公司 | Method and device for displaying RGB image on RGBW panel |
| CN107247384B (en) * | 2017-07-31 | 2020-07-03 | 歌尔股份有限公司 | Brightness compensation data acquisition system and method, image brightness adjustment method and device |
| CN108492794B (en) * | 2018-04-03 | 2020-05-15 | 京东方科技集团股份有限公司 | Method and device for converting RGB image signal into RGBW image signal |
| JP7038684B2 (en) * | 2019-08-01 | 2022-03-18 | Ｔｖｓ Ｒｅｇｚａ株式会社 | Image display device and image processing method |
| CN110491325A (en) * | 2019-08-23 | 2019-11-22 | 京东方科技集团股份有限公司 | Rendering method, device and the computer readable storage medium of RGB to RGBW |
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