CN101727842B - Color sequence display method - Google Patents
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- CN101727842B CN101727842B CN2008101675244A CN200810167524A CN101727842B CN 101727842 B CN101727842 B CN 101727842B CN 2008101675244 A CN2008101675244 A CN 2008101675244A CN 200810167524 A CN200810167524 A CN 200810167524A CN 101727842 B CN101727842 B CN 101727842B
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Abstract
The invention relates to a color sequence display method which is suitable for a multi-pixel display. The method comprises the steps of: forming each frame of the pixel by displaying a first subframe, a second subframe and a third subframe in a display time; calculating the displayed gray-scale difference of every two adjacent pixels in the same frame to obtain a plurality of variation values; then, providing a first perceptible value, and sensing the pixel, of which the variation value is greater than the first perceptible value; and finally, increasing the display frequency of the first subframe, the second subframe and the third subframe of the pixels in the display time.
Description
Technical field
The invention relates to a kind of display packing, and particularly relevant for the improvement of a kind of color sequence display method (color sequential mehtod for displaying image).
Background technology
In the technical field of color sequence display method (color sequential method for displaying image), each frame (frame) can be formed by the inferior frame (sub-frame) of three kinds or more kinds of solid colors.With enough fast display frequency, show these red, green and blue time frames successively, and make human eye can experience full-color image.See through the display technique of color sequence display method, can make display more compact, and can obtain bigger spatial resolution (spatialresolution) with low cost.
Yet, with the static image that color sequence display method was shown, human eye in display frame, jump apparent time experience easily the phenomenon of the bigger regional coloured separation of luminance difference (color breakup, CBU).Translational speed object faster in dynamic frame, human eye is also perceived the phenomenon of the coloured separation of object in the display frame easily.This all can cause user's visual experience not good.Signal writes, liquid crystal reacts and backlight luminescence because completion one sub-frame must be accomplished in regular turn.Therefore, if the turnover rate (frame rate) that will improve display solves this problem comprehensively, then can be subject to the limit of liquid crystal molecule reaction velocity and be difficult to realization.
Summary of the invention
The present invention provides a kind of color sequence display method, and it can improve display frequency to local frame, separates (color breakup) phenomenon with effective look that improves display frame.
The present invention proposes a kind of color sequence display method, and it is applicable to that one has the display of many pixels.Pixel of the present invention is suitable for showing in regular turn a plurality of frames (frame), and each frame that wherein pixel appeared is to see through to show that in the demonstration time one first subframe (sub-frame), one second subframe and one the 3rd subframe form.In addition, calculate the difference of GTG that neighbor appears in the same frame, to draw a plurality of changing values respectively.Then, one first perceptible value is provided, and detects the pixel of changing value greater than first perceptible value.Afterwards, in frame, in the demonstration time, improve pixel, show the number of times of first, second, third subframe greater than first perceptible value.
In one embodiment of this invention, above-mentioned color sequence display method also comprises: two frames that show relatively continuously, and calculate the translational speed of a corresponding image in two frames.Then, one second perceptible value is provided, and detects greater than the pairing pixel of the image of second perceptible value.Afterwards, in the demonstration time, in frame, improve pixel, show the number of times of first, second, third subframe greater than second perceptible value.
In one embodiment of this invention, the above-mentioned demonstration time is 1/60 second.
In one embodiment of this invention, above-mentionedly in the demonstration time, improve the mode that first, second, third subframe shows number of times and comprise: show first, second, third in regular turn, first, second and the 3rd subframe.
In one embodiment of this invention, above-mentioned first, second, third subframe is respectively red frame, green frame, blue frame.
In one embodiment of this invention, above-mentionedly in the demonstration time, improve the mode that first, second, third subframe shows number of times and comprise: show first, second, third, the 3rd in regular turn, first, second, second, third and first subframe.
In one embodiment of this invention, above-mentioned first, second, third subframe is respectively red frame, green frame, blue frame.
Color sequence display method of the present invention can improve its display frequency to the big zone of light and shade difference in the static frames, can experience the phenomenon of the coloured separation of frame in the jumping apparent time to avoid human eye.In addition, color sequence display method of the present invention can to translational speed in the dynamic frame faster object improve its display frequency, and then the phenomenon of the coloured separation of object that can effectively avoid moving in the frame.Therefore, color sequence display method of the present invention need not improve the signal write frequency of full frame, but optionally improves the write frequency of frame regional area, just can improve the phenomenon that look separates.Therefore, the quality of display frame just can effectively promote.
Description of drawings
Fig. 1 is the synoptic diagram of display of the present invention;
Fig. 2 is the steps flow chart synoptic diagram of color sequence display method of the present invention;
Fig. 3 A is the synoptic diagram in different conditions zone in the frame of the present invention;
Fig. 3 B is the synoptic diagram that the present invention shows the subframe number of times;
Fig. 4 A is the synoptic diagram in different conditions zone in the frame of the present invention;
Fig. 4 B is the synoptic diagram that the present invention shows the subframe number of times;
Fig. 4 C is the synoptic diagram that another zone state distributes in the frame of the present invention.
[primary clustering symbol description]
10: pixel 100: display
R: red frame G: green frame
B: blue frame △ B: changing value
D: can not differentiate just that look separates apart from J1: first perceptible value
V: the relative moving speed L of human eye and object image
T: the brightness of object image
I, II, III: the frame zone J2 of different conditions: second perceptible value
S1～S3: the step of color sequence display method of the present invention
Embodiment
Fig. 1 is the synoptic diagram of display of the present invention.Please refer to Fig. 1, display 100 has a plurality of pixels 10.The suitable display 100 that makes of color sequence display method of the present invention (method of color sequential display) sees through pixel 10 and shows a plurality of frames (frame) in regular turn.Wherein, each frame of being appeared of pixel 10 is to see through to show that in the demonstration time one first subframe (sub-frame), one second subframe and one the 3rd subframe form.In one embodiment, first, second and the 3rd subframe can be respectively red frame, green frame and blue frame.
For example, the demonstration time of each frame for example is 1/60 second.This meaned in 1 second, and display 100 can show 60 frames, so that human eye can be experienced continuous image by persistence of vision.In addition, in 1/60 second, each frame is to see through exhibit red frame, green frame and blue frame apace, constitutes full-color frame.Thus, human eye just can be experienced successional full-color image.
Yet, when human eye two area changes that light and shade differs greatly in static frames are watched the position attentively, be easy to experience the phenomenon of the coloured separation of frame.When translational speed in people's eye fixation dynamic image faster during object, also be easy to experience the phenomenon of the coloured separation of frame.This can explain by following formula.
D＝0.779*L
T 0.01*V
0.89
Wherein, D is for just differentiating the distance that look separates, L
TBe the brightness of object image, V is the relative moving speed of human eye and object image.Faster when the heal relative moving speed of bright or object image and human eye of object image, the user must be far away from display 100, just can avoid the look segregation phenomenon of visual experience to object image.In actual life, the user can keep a fixed range when watching the image that display 100 play.Therefore, human eye is experienced the look segregation phenomenon that light and shade and translational speed caused because of object image probably.
In order to improve the phenomenon that the static frames look separates, color sequence display method of the present invention can carry out step S1 as shown in Figure 2～S3 in regular turn.At first please refer to step S1: calculate 10 differences that present GTG of neighbor in the same frame earlier, to draw a plurality of changing value △ B respectively.Please refer to step S2 then: one first perceptible value J1 is provided, and (just noticeable difference JND), and detects the pixel 10 of changing value △ B greater than the first perceptible value J1.It is dark especially or bright especially that this is meaning these regional pixels 10, makes human eye experience the phenomenon that look separates easily.On the practice, these zones are likely the captions of film, and it for example is black background white captions or the white background collocation black captions of arranging in pairs or groups.Please refer to step S3 afterwards: in the demonstration time, in frame, improve pixel 10, show the number of times of first, second, third subframe greater than the first perceptible value J1.This is meaning, and the frame update rate of subregion (frame rate) will be enhanced.
Here be noted that the setting of the first perceptible value J1, can do suitable adjustment, then will elaborate hereinafter according to different situations.Table 1～2C is the check colors impression degree grade form of segregation phenomenon of human eye under the different observed ranges.The scope of scoring is 0～10 minute.Wherein, 0 submeter is leted others have a look at and is loseed the look segregation phenomenon soon, 10 submeters let others have a look at the eye being seen look segregation phenomenon the most serious.In the table 1, user's observed range is the diagonal distance of 1 times of indicator screen, and the size of this display for example is 32 o'clock, and the diagonal distance of indicator screen for example is 80 centimeters.In the table 2, user's observed range is 1.5 times of diagonal distance (120 centimeters).In the table 3, user's observed range is 2 times of diagonal distance (160 centimeters).
As shown in table 1, when the speed of movement of objects is that 300mm/s, brightness are 50nits, the check colors scoring of segregation phenomenon of human eye is 6.47 minutes.When the speed of movement of objects increases to 360mm/s, brightness is 50nits, the check colors scoring of segregation phenomenon of human eye is 8 minutes.This speed that is meaning movement of objects is faster, and the phenomenon that human eye is experienced the look separation has more significant tendency.
Table 1 is the check colors impression degree grade form of segregation phenomenon of human eye under the different observed ranges
As shown in table 2, when the speed of movement of objects is 300mm/s, 360mm/s, brightness is all 50nits.Human eye check colors segregation phenomenon scoring for be in regular turn 6.12 minutes with 7.74 minutes.Table 6.12 minutes shown in the 2B and 7.74 minutes numerical value are all less than table 2A relevant numerical (6.47 minutes and 8 minutes).This is meaning under same case, and observed range is far away, and it is more not obvious that human eye is experienced the phenomenon that look separates.
Table 2 is the check colors impression degree grade form of segregation phenomenon of human eye under the different observed ranges
As shown in table 3, when the speed of movement of objects is that 300mm/s, brightness are 50nits, the check colors scoring of segregation phenomenon of human eye is 5.62 minutes.The observed range of supposing the user is 160 centimeters, and this is the situation that the most often occurs.The check colors impression scoring of segregation phenomenon of human eye was set at more than 5 minutes, and human eye just can't be accepted the quality of display frame.Under this state, the first perceptible value J1 just can be set at 50nits.Certainly, different along with the speed of brightness and movement of objects, the first perceptible value J1 also can change.In addition, the check colors impression scoring of segregation phenomenon of human eye also can be used stricter standard, and it for example is to be set at more than 3 minutes.Above-mentioned various situations are all only limited in order to explain and to be not intended at this.
Table 3 is the check colors impression degree grade form of segregation phenomenon of human eye under the different observed ranges
For instance, area I is a subtitle region in the frame shown in Fig. 3 A, and area I I is an image area, and Fig. 3 B representes that area I and area I I show the number of times of subframe in the demonstration time.Can be known by Fig. 3 B, in 1/60 second demonstration time, only show three sub-frame among the area I I, be red frame R, blue frame B and green frame G in regular turn.Specifically, in 1/60 second demonstration time, having shown six sub-frame in the area I, is red frame R, green frame G, blue frame B, red frame R, green frame G and blue frame B in regular turn.In other words, the frame update rate of area I has improved.Thus, human eye is jumped apparent time between subtitle region and image area, just can avoid experiencing the phenomenon of the coloured separation of subtitle region.
Certainly, in 1/60 second demonstration time, also can show nine sub-frame in the area I, be red frame R, green frame G, blue frame B, blue frame B, red frame R, green frame G, green frame G, blue frame B and red frame R in regular turn.
In order to improve the phenomenon that the dynamic frame look separates, two frames that color sequence display method of the present invention can show more continuously, and calculate the translational speed of corresponding image in two frames.Then, one second perceptible value J2 is provided, and detects greater than the pairing pixel 10 of the image of the second perceptible value J2.The setting of this second perceptible value J2 and the setting of the first perceptible value J1 are similar, do not add to give unnecessary details in this.Afterwards, raising in the demonstration time, shows the number of times of first, second, third subframe greater than the pixel 10 of the second perceptible value J2 in frame.In other words, color sequence display method of the present invention can be to translational speed image and improve its frame update rate faster.
For example, the image translational speed of area I is greater than the image translational speed of area I I among Fig. 4 A, and the image translational speed of area I I is greater than area I II image translational speed.Shown in Fig. 4 B, color sequence display method of the present invention can be directed against the image state of area I, area I I and area I II respectively, and adopts multiple frame update rate.Likewise, having shown nine sub-frame in the area I, is red frame R, green frame G, blue frame B, blue frame B, red frame R, green frame G, green frame G, blue frame B and red frame R in regular turn.By above-mentioned method, color sequence display method of the present invention just can effectively improve the problem of the coloured separation of dynamic frame.Certainly, the distribution in zone also can be shown in Fig. 4 C, and color sequence display method of the present invention can be directed against the image state of area I, area I I and area I II respectively, and adopts multiple frame update rate.At this only in order to illustrate and to be not intended to limitation.On the practice, color sequence display method of the present invention can come image data is made pre-process by a buffered device (not illustrating), and then makes display 100 when playing video, superior display quality can be arranged.
In sum, color sequence display method of the present invention can improve its display frequency to the big zone of light and shade difference in the static frames, experiences the phenomenon of the coloured separation of frame in the jumping apparent time effectively to avoid human eye.In addition, color sequence display method of the present invention also can be directed against its display frequency of translational speed object raising faster in the dynamic frame, and then effectively avoids human eye to experience the phenomenon of the coloured separation of image of fast moving in the frame.Therefore, color sequence display method of the present invention can be directed against the state of zones of different in the frame and adjust its display frequency, and then can significantly promote the quality of display frame.
Though the present invention with preferred embodiment openly as above; Right its is not in order to limit the present invention; Has common knowledge the knowledgeable in the technical field under any; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims.
Claims (6)
1. a color sequence display method is applicable to that one has the display of many pixels, it is characterized in that this color sequence display method comprises:
Those pixels are suitable for showing in regular turn a plurality of frames, and each frame that wherein those pixels appeared is to see through in the demonstration time, shows that one first subframe, one second subframe and one the 3rd subframe form;
Calculate the difference of GTG that neighbor appears in the same frame, to draw a plurality of changing values respectively;
One first perceptible value is provided, and detects the pixel of those changing values greater than perceptible value;
In those frames, in this demonstration time, improve those pixels greater than first perceptible value, show the number of times of this first, second, third subframe;
Two frames that show relatively continuously, and calculate the translational speed of a corresponding image in two frames;
One second perceptible value is provided, and detects the pairing pixel of this image greater than second perceptible value; And
In those frames, in this demonstration time, improve those pixels greater than second perceptible value, show the number of times of this first, second, third subframe.
2. color sequence display method as claimed in claim 1 is characterized in that, this demonstration time is 1/60 second.
3. color sequence display method as claimed in claim 1 is characterized in that, in this demonstration time, improves the mode that this first, second, third subframe shows number of times and comprises: show in regular turn this first, second, third, first, second and the 3rd subframe.
4. color sequence display method as claimed in claim 2 is characterized in that, this first, second, third subframe is respectively red frame, green frame, blue frame.
5. color sequence display method as claimed in claim 1; It is characterized in that, in this demonstration time, improve the mode that this first, second, third subframe shows number of times and comprise: show in regular turn this first, second, third, the 3rd, first, second, second, third and first subframe.
6. color sequence display method as claimed in claim 5 is characterized in that, this first, second, third subframe is respectively red frame, green frame, blue frame.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026771A (en) * | 2006-02-25 | 2007-08-29 | 三星电子株式会社 | Light source, image apparatus using the light source, and method of driving the same |
| CN101185112A (en) * | 2005-08-02 | 2008-05-21 | 单方图素显示股份有限公司 | Mechanism to mitigate color breakup artifacts in field sequential color display systems |
| CN101251661A (en) * | 2007-02-20 | 2008-08-27 | 爱普生映像元器件有限公司 | Image display device and electronic apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185112A (en) * | 2005-08-02 | 2008-05-21 | 单方图素显示股份有限公司 | Mechanism to mitigate color breakup artifacts in field sequential color display systems |
| CN101026771A (en) * | 2006-02-25 | 2007-08-29 | 三星电子株式会社 | Light source, image apparatus using the light source, and method of driving the same |
| CN101251661A (en) * | 2007-02-20 | 2008-08-27 | 爱普生映像元器件有限公司 | Image display device and electronic apparatus |
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