CN1924978A - Plasma display device and its image processing method - Google Patents
Plasma display device and its image processing method Download PDFInfo
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- CN1924978A CN1924978A CNA2006101596065A CN200610159606A CN1924978A CN 1924978 A CN1924978 A CN 1924978A CN A2006101596065 A CNA2006101596065 A CN A2006101596065A CN 200610159606 A CN200610159606 A CN 200610159606A CN 1924978 A CN1924978 A CN 1924978A
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Abstract
The present invention discloses a plasma display device and its image processing method which comprises a first halftone device adding or subtracting a prescribed gray value on the gray value of each pixel in the video signal inputted from the exterior; a first image processor reversely gray correcting the video signal inputted from the first halftone device and executing a subfield mapping after halftone processing the corrected gray value; a second image processor reversely gray correcting the video signal inputted from the exterior and executing a subfield mapping after halftone processing the corrected gray value; a subdomain mapping code selector randomly selecting and outputting one of the subdomain mapping codes input from the first image processor or from the second image processor based on the image motion region. As a result, the image quality is further improved.
Description
One, technical field
The invention relates to plasma display system, a kind of plasma display system and image processing method thereof that can further improve image quality of saying so in more detail.
Two, background technology
Fig. 1 is the synoptic diagram that shows the method for the image that has plasma display system now.
As shown in Figure 1, plasma display system is divided into the mutually different a plurality of subdomains of discharge time with an image frame phase.Relative sub-regions phase of gray-scale value in the vision signal of input makes Plasmia indicating panel luminous, thus display image.
Each subdomain is divided into: can produce equably discharge initial period, select the address period of discharge cell and realize keeping the phase of gray scale according to discharge time.For example, in the time of be with 256 gray scale display images, the image frame phase (16.67ms) that will be equivalent to 1/60 second is divided into 8 subdomains.
Simultaneously, 8 subdomains are divided into initial period, address period again separately and keep the phase.Here, keep the phase in each subdomain with 2
nThe ratio of (n=0,1,2,3,4,5,6,7) increases.Therefore, owing to the phase of keeping in each subdomain changes, so can realize the gray scale (Gray level) of image.That is,, the number of keeping pulse is distributed in each subdomain according to certain principle, afterwards, by the mode of each subdomain of opening/closing, with the number of keeping pulse of the subdomain opened with come representing gradation., will be called the subdomain mapping here, will comprise that the data of this information are called subdomain mapping code according to the subdomain that gray-scale value is selected to open or close.
The subdomain mapping method has several different methods.For example, there are a variety of methods in number, actual grey number according to the subdomain that uses.Here, actual grey is meant through subdomain mapping and gray-scale displayed is called and does not carry out Flame Image Process and gray-scale displayed.As shown in Figure 2, when driving plasma display system, if too much use actual grey, the problem of false figure noise (false Contour noise) will appear taking place.
Fig. 2 is the synoptic diagram of the example of the existing false figure noise generation of explanation.
As shown in Figure 2,256 gray scales that will from 0 to 255 as actual grey when picture shows, if the false figure noise that white or black line occur will be produced in moving image or mobile subscriber's visual angle between specific contiguous gray scale.The problem that occurs because of the characteristic of this subdomain mapping method is particularly obvious in 127 and 128 contiguous gray scale.And, there is the tangible more problem of image false figure noise of moving big.
Three, summary of the invention
For addressing the above problem, the objective of the invention is to improve plasma display system and image processing method thereof, a kind of plasma display system that can reduce false figure noise in the image that shows is provided.
And another object of the present invention is: improve plasma display system and image processing method thereof, the plasma display system of the image quality that can improve display image is provided.
For achieving the above object, the plasma display system according to one embodiment of the invention comprises: the 1 half of any one value the transfers device the gray-scale value in being distributed in the specialized range that adds deduct from the gray-scale value of each pixel of the vision signal of outside input; Oppositely the vision signal of device input is transferred in gray correction the above-mentioned the 1 half, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the 1st image processor that subdomain shines upon; The reverse above-mentioned vision signal of gray correction from the outside input, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the 2nd image processor that subdomain shines upon; According to whether being the moving region of image, select and export in the subdomain mapping code of the subdomain mapping code of above-mentioned the 1st image processor input or the input of above-mentioned the 2nd image processor the subdomain mapping code selector of any one.
Plasma display system according to one embodiment of the invention also comprises: according to the gray-value variation between the vision signal of above-mentioned continuous pictures frame from outside input, detect the moving region detecting device of above-mentioned moving region.
The above-mentioned the 1 half transfers device to use with the pattern mask of the above-mentioned gray-scale value that adds deduct as coefficient, carries out above-mentioned adding deduct.
The above-mentioned the 1 half transfers device to use has mutually different above-mentioned coefficient, plural at least above-mentioned pattern mask.
The above-mentioned the 1 half transfers device to use mutually different above-mentioned pattern mask at each plural at least continuous pictures frame, uses mutually different above-mentioned pattern mask at any one above-mentioned image frame.
Be distributed in above-mentioned pattern mask above-mentioned coefficient and be 0.
Plasma display system according to one embodiment of the invention also comprises: after above-mentioned vision signal and the above-mentioned the 1 half from outside input being transferred the difference value of gray-scale value of the vision signal of device input multiply by the weighted value of regulation, with its to the above-mentioned the 1 half transfer the device input vision signal neighborhood pixels diffusion the 2 half transfer device.
The weighted value of afore mentioned rules is different along with the position of above-mentioned neighborhood pixels.
The weighted value of afore mentioned rules has arbitrary value.
When all greys were 256, the gray-scale value in the afore mentioned rules scope was more than 0 below 10.
Gray-scale value in the afore mentioned rules scope is an integer.
When the gray-scale value of vision signal of input is identical, the subdomain mapping code that above-mentioned the 1st image processor is identical with above-mentioned the 2nd image processor output.
Image processing method according to the plasma display system of one embodiment of the invention comprises: (a), and the stage of any one value the gray-scale value in being distributed in the specialized range that adds deduct from the gray-scale value of each pixel of the vision signal of outside input; (b), the reverse vision signal of above-mentioned (a) the stage input of gray correction, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the stage that subdomain shines upon; (c), the reverse above-mentioned vision signal of gray correction from the outside input, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the stage that subdomain shines upon; (d), according to whether being the moving region of image, select and export in the subdomain mapping code of the subdomain mapping code of above-mentioned (b) stage input or the input of above-mentioned (c) stage the stage of any one.
Image processing method according to the plasma display system of one embodiment of the invention also comprises: according to the gray-value variation between the vision signal of above-mentioned continuous pictures frame from the outside input, detect the stage of above-mentioned moving region.
In above-mentioned (a) stage, use with the pattern mask of the above-mentioned gray-scale value that adds deduct as coefficient, carry out above-mentioned adding deduct.
In above-mentioned (a) stage, use to have mutually different above-mentioned coefficient, plural at least above-mentioned pattern mask.
In above-mentioned (a) stage, use mutually different above-mentioned pattern mask at each plural at least continuous pictures frame, use mutually different above-mentioned pattern mask at any one above-mentioned image frame.
Be distributed in above-mentioned pattern mask above-mentioned coefficient and be 0.
Image processing method according to the plasma display system of one embodiment of the invention also comprises: with above-mentioned from the outside input vision signal and after the difference value of the gray-scale value of the vision signal of input of above-mentioned (a) stage multiply by the weighted value of regulation, with its stage to the neighborhood pixels diffusion of the vision signal of above-mentioned (a) stage input.
The weighted value of afore mentioned rules is different along with the position of above-mentioned neighborhood pixels.
The weighted value of afore mentioned rules has arbitrary value.
When all greys were 256, the gray-scale value in the afore mentioned rules scope was more than 0 below 10.
Gray-scale value in the afore mentioned rules scope is an integer.
When the gray-scale value of vision signal of input is identical, the subdomain mapping code that above-mentioned (b) stage is identical with above-mentioned (c) stage output.
The present invention has following effect: can reduce false figure noise in the display image of plasma display system.And, can improve the image quality of the display image of plasma display system.And the logical circuit that can simplify plasma display system constitutes.
Four, description of drawings
Fig. 1 is the synoptic diagram that shows the method for the image that has plasma display system now.
Fig. 2 is the synoptic diagram of the example of the existing false figure noise generation of explanation.
Fig. 3 is the synoptic diagram of explanation according to the plasma display system of one embodiment of the invention.
Fig. 4 is the example of the employed pattern mask of device is transferred in explanation according to the 1 half of one embodiment of the invention a synoptic diagram.
Fig. 5 a and Fig. 5 b are the synoptic diagram of explanation according to the pattern mask system of selection of one embodiment of the invention.
Fig. 6 is that explanation is transferred the synoptic diagram of the operating characteristic of device according to the 2 half of one embodiment of the invention.
The symbol description of major part in the accompanying drawing
Transferred device to transfer device in 320: the 2 half in 310: the 1 half
340: the 2 image processors of 330: the 1 image processors
350: moving region detecting device 360: subdomain mapping code selector
Five, embodiment
Below, with reference to accompanying drawing, foundation specific embodiment of the present invention is described.
Fig. 3 is the synoptic diagram of explanation according to the plasma display system of one embodiment of the invention.
As shown in Figure 3, the plasma display system according to one embodiment of the invention comprises: the 1 half transfers device the 310, the 2 half to transfer device the 320, the 1st image processor the 330, the 2nd image processor 340, moving region detecting device 350 and subdomain mapping code selector 360.
The 1 half transfers any one value the gray-scale value of device 310 in being distributed in the specialized range that adds deduct from the gray-scale value of each pixel of the vision signal of outside input.That is, regulate the output gray level value, so as with the gray-scale value of incoming video signal show as the input gray level value, greater than the gray-scale value of input gray level value or less than in the gray-scale value of input gray level value any one, thereby have the effect of disperseing false figure noise.For example, be 127 and 128 vision signal for the input gray level value, reduce the output gray level value, be kept to 125 with 127, be kept to 127 with 128, thereby shine upon with the low subdomain mapping code of possibility that false contouring takes place.Here, the gray-scale value in the specialized range is 0 or more below 10, thereby can maximize false figure noise elimination effect.And for all pictures, the 1 half transfers device 310 in order to carry out computing effectively, uses with the gray-scale value that the adds deduct pattern mask as coefficient.Thus, can use actual grey in a large number, perhaps can in the many images of motion, eliminate false figure noise.To transfer the operating characteristic of device 310 to describe to the 1 half by Fig. 4 to Fig. 5 a afterwards.
The 2 half transfer device 320 to transfer the difference value of the gray-scale value of the vision signal that device 310 regulates to multiply by the weighted value of regulation from the gray-scale value of the vision signal of outside input with by the 1 half after, with it to the 1 half neighborhood pixels diffusion of transferring the vision signal of device 310 inputs.Promptly, in one embodiment of the invention, consider the shown image generation distortion of gray-scale value of transferring device 310 to add deduct according to the 1 half, the value that the above-mentioned difference value that a pixel is produced multiply by weighted value is as error, and execution is diffused into the error diffusion of neighborhood pixels with it.Thus, make the gray-scale value overall balanceization of the vision signal that adds deduct, can restrain the distortion of the image of demonstration.To transfer the operating characteristic of device 320 to describe to the 2 half by Fig. 6 afterwards.
Transfer the vision signal of device 310 inputs for reverse gray correction the 1 half, partly mediate and manage because of carrying out the subdomain mapping behind the decimal gray-scale value that oppositely gray correction takes place, the 1st image processor 330 comprises: the 1st reverse gamma corrector the 331, the 1st decimal is partly transferred device 332 and the 1st subdomain mapper 333.
The 1st reverse gamma corrector 331 vision signal that reverse gray correction the 1 half transfers device 310 to import to each image frame.The brightness value of the actual displayed that is characterized as the vision signal gray-scale value that plasma display system has forms linearity curve.On the contrary, from the vision signal of outside input, the brightness value of gray-scale value has gamma characteristic, therefore, reverse gray correction outer video signal, so that for gray-scale value, the picture of plasma display system actual displayed has linear brightness value.
The 1st decimal is partly transferred device 332 to modify tone and is handled the vision signal of the 1st reverse gamma corrector 331 inputs.Oppositely the vision signal of gray correction has reduced the gray scale expressive force in its signal processing.For it is compensated, have half and transfer device 332, partly mediate the decimal composition of the vision signal of the reverse gray correction of reason, thereby in the gray scale expressive force that raising has reduced, guarantee the gray scale linearity.This half accent method has shake (dithering) and error diffusion method.Can use or use with dither method and error diffusion method respectively.
The 1st subdomain mapper 333 shines upon the vision signal that the 1st decimal is partly transferred device 332 inputs according to predefined subdomain mapping table.Preserve the subdomain mapping code of the gray-scale value of corresponding incoming video signal in the subdomain mapping table in advance.The vision signal of mapping is called subdomain mapping code, and with its as drive to addressing electrode (not synoptic diagram) provide addressing pulse data driver (not synoptic diagram) information and use.
For the vision signal of reverse gray correction from the outside input, partly mediate and manage because of carrying out the subdomain mapping behind the decimal gray-scale value that oppositely gray correction takes place, the 2nd image processor 340 comprises: the 2nd reverse gamma corrector the 341, the 2nd decimal is partly transferred device 342 and the 2nd subdomain mapper 343.In fact, the 2nd reverse gamma corrector the 341, the 2nd decimal partly transfers device 342 and the 2nd subdomain mapper 343 partly to transfer device 332 and the 1st subdomain mapper 333 to have identical operating characteristic with the 1st reverse gamma corrector the 331, the 1st decimal that illustrates previously, and therefore the repetitive description thereof will be omitted.
Moving region detecting device 350 is all detecting the moving region in the picture displayed according to the gray-value variation between the vision signal of the continuous pictures frame of importing from the outside.For example, the vision signal of image frame (N-1) and behind the grey value difference of the vision signal of the current image frame (N) of outside input before calculating detects the zone of grey value difference more than predefined threshold values.The calculating of grey value difference is at same pixel or the same area and carry out.That is, for same pixel or the same area, when the gray value differences different time that has more than the threshold values, in the picture of actual displayed, for image frame before, objects displayed has taken place to move in the current image frame, and hence one can see that has grey value difference.And, also can rely on MPD (Moving Picture Distortion) detection method to detect.The MPD detection method is: relatively the subdomain of continuous pictures interframe shines upon code, relies on the value of utilizing its calculating, detects the moving region whether false contouring takes place.
According to the information of the moving region of the relevant image of moving region detecting device 350 input, in the subdomain mapping code of the subdomain mapping code of the 1st image processor 330 inputs or 340 inputs of the 2nd image processor any one selected and exported to subdomain mapping code selector 360.Subdomain is shone upon code offers provides addressing pulse afterwards to addressing electrode (not synoptic diagram) data driver (not synoptic diagram).Like this, in one embodiment of the invention, according to the information of the moving region of the image that detects at each image frame, by mutually different path, the vision signal that output is regulated.Promptly, in the image of an image frame, because the possibility height of false contouring takes place in the moving region, so select to transfer device the 310, the 2 half to transfer the vision signal of device 320 and 330 outputs of the 1st image processor by the 1 half, in the image of an image frame, because it is low that stagnant zone produces the possibility of false contouring, so select to pass through the vision signal of the 2nd image processor 330 outputs.
Like this, transfer device 320, regulate the gray-scale value of the vision signal that suppresses false contouring in advance, thereby the logic (logic) that can simplify according to the plasma display system of one embodiment of the invention constitutes by the 1 half accent device 310 and the 2 half.Promptly, transfer device 310 and the 2 half to transfer device 320 to be included in the 1st image processor 330 or be positioned at its back when the 1 half, in other funtion parts of the 1st image processor 330, along with the format change of gray-scale value adjusting or vision signal, the 1 half transfers device 310 and the 2 half to transfer the algorithm of device 320 to constitute also must change.For example, in order to carry out error diffusion, must carry out will be transformed to the vision signal of subdomain mapping code when being transformed to the process of vision signal again, when error diffusion, can not compensate to decimal place or when changing, can prevent from this is regulated the situation of gray-scale value in advance according to APL (AveragePicture Level) value subdomain weighted value.
And the 1st image processor 330 and the 2nd image processor 340 in fact, for the vision signal of same grayscale value, are exported identical subdomain mapping code as the function portion with mutually the same operating characteristic.In order to suppress false contouring, for the vision signal of anticipating the moving region of regulating gray-scale value with there is no need to carry out the vision signal of the stagnant zone that false contouring suppresses, be divided into two approach.Mobilely be divided into two approach for what vision signal was described, be divided into two function portions among Fig. 3, but in fact also can constitute the vision signal of handling two paths by a logical circuit.The 1st subdomain mapper uses identical subdomain mapping table with the 2nd subdomain mapper.According to gray-scale value, use mutually the same mapping code, thereby have the boundary anti noise of the boundary part that in an image frame, prevents moving region and stagnant zone.
Fig. 4 is the example of pattern mask that device uses is transferred in explanation according to the 1 half of one embodiment of the invention a synoptic diagram.
As shown in Figure 4, in order to regulate gray-scale value effectively, the 1 half transfers device to use pattern mask.Pattern mask with the gray-scale value that adds deduct as coefficient.And, using a plurality of pattern masks, plural at least pattern mask has mutually different coefficient.And, in each plural at least continuous pictures frame, use mutually different mask in a plurality of pattern masks, be preferably in and use mutually different pattern mask in the image frame between neighborhood pixels.Thereupon, in an image frame respectively arbitrarily (random) add deduct be distributed in all pixels gray-scale value, also have any effect in continuous pictures interframe simultaneously.By any adjusting gray-scale value, the pattern noise of pattern mask takes place in the image that can suppress to show.Here, so-called pattern noise is meant between the pixel that ought spatially be close to or uses continuously same pattern mask in continuous pictures interframe in time, perhaps repeatedly during the coefficient of pattern mask, pattern occurs in the image of demonstration.Here, be distributed in a pattern mask coefficient and be 0, thereby can reduce the image fault that causes because of the gray-scale value that adds deduct.
And the structure of pattern mask can be made of N*N.Used the 2*2 pattern mask among Fig. 4.As shown in the figure, an image frame phase is used mutually different 4 pattern masks.Because 4 continuous image frame phases are used mutually different pattern mask, so use 16 pattern masks altogether.The coefficient of pattern mask has the value of sun (+) and cloudy (-) to each diagonal, replaces at each image frame sun (+) and cloudy (-).
And the elimination effect in order to ensure false contouring prevents the picture noise because of the image excessive distortion, and the coefficient magnitude of pattern mask is more than 0 below 10.Simultaneously, by integer is used for coefficient, can regulate gray-scale value more easily.
Fig. 5 a and Fig. 5 b are the synoptic diagram of explanation according to the pattern mask system of selection of one embodiment of the invention.Fig. 5 a is that Fig. 5 b is the synoptic diagram of the selection course of pattern mask to the synoptic diagram of the example of an employed pattern mask of all pixels of image frame phase.
Shown in Fig. 5 a,, use identical pattern mask for 4 pixels of mutual vicinity.That is,, select a pattern mask, and in 4 contiguous pixels, use a 2*2 pattern mask of selecting based on a pixel that is shown as white.Since the coefficient of pattern mask and be 0, so, have only the pattern mask of use, could reduce the distortion of gray-scale value adjusting for 4 pixels.Among Fig. 5 a, though irrelevant with R (Red), G (Green), B (Blue) color of pixel, used a pattern mask, different therewith is also can distinguish and use according to color of pixel.
Shown in Fig. 5 b; according to the example of Fig. 4, when pattern mask with 4 image frame units when there are 4 in each image frame, at first; select piece 510 by the mask image frame, decision is selected the pattern mask of which type of image frame according to vertically refreshing synchronous (Vsync) signal.At this moment, use connect change (toggle) skill and technique or arbitrarily seed (Randomseed) skill and technique select.
Afterwards; if selected the mask image frame; just by 520 counting periods of computing block (blank) signal and pixel clock (Pixel clock), then by mask select piece 530 select to be distributed in selection based on an image frame of the pixel that is shown as white of Fig. 5 a, in 4 pattern masks any one.At this moment, use connect change (toggle) skill and technique or arbitrarily seed (Random seed) skill and technique select.
Afterwards, in 4 pixels, the pixel of first row is carried out adding deduct on the gray-scale value of vision signal according to the pattern mask of selecting by operator 540.Coefficient with pattern mask is kept at line memory piece 550 then, and the pixel of second row is used when second row operation in 4 pixels then.
Fig. 6 is that explanation is transferred the synoptic diagram of the operating characteristic of device according to the 2 half of one embodiment of the invention.
As shown in Figure 6, in one embodiment of the invention, the difference value of the gray-scale value of the vision signal of the vision signal that will import from the outside and the 1 half accent device input multiply by the weighted value (a/16 of regulation, b/16, c/16, error percentage (16-a-b-c)/16) transfers the neighborhood pixels of the vision signal of device input to spread to the 1 half.At this moment, the weighted value of regulation is different according to the position of neighborhood pixels, and the weighted value of regulation has value arbitrarily.Such just as previously mentioned, prevent to produce pattern noise because of identical weighted value.Because error diffusion is from the vision signal of outside input, so the format change of vision signal there is no need, while decimal gray-scale value also can be used as error and uses.
Image processing method according to the plasma display system of one embodiment of the invention comprises: (a), and the stage of any one value the gray-scale value in being distributed in the specialized range that adds deduct from the gray-scale value of each pixel of the vision signal of outside input; (b), the reverse vision signal of above-mentioned (a) the stage input of gray correction, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the stage that subdomain shines upon; (c), the reverse above-mentioned vision signal of gray correction from the outside input, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the stage that subdomain shines upon; (d), according to whether being the moving region of image, select and export in the subdomain mapping code of the subdomain mapping code of above-mentioned (b) stage input or the input of above-mentioned (c) stage the stage of any one.Here, operating characteristic according to the plasma display system of one embodiment of the invention has been carried out sufficient explanation in Fig. 3 to Fig. 6, therefore omit the more specific description to the image processing method of the plasma display system of foundation one embodiment of the invention.
Like this, one embodiment of the present of invention are used pattern mask, regulate from the gray-scale value of the vision signal of outside input, thereby prevent to produce false contouring.At this moment, adjusting is used because image processor is carried out the format conversion and the APL value of vision signal, so can simplify the formation of logical circuit more after the gray-scale value of the vision signal of outside input.And because irrelevant with the zone, the same grayscale value is mapped as identical subdomain mapping code, produces noise so can suppress the boundary of moving region and stagnant zone.
As mentioned above, the present invention can reduce false figure noise in the display image of plasma display system.And, can improve the image quality of the display image of plasma display system.And the logical circuit that can simplify plasma display system constitutes.
As mentioned above, in the scope that does not change the technology of the present invention thought and technical characterictic, the staff of the technical field of the invention can implement technology of the present invention with other concrete forms and constitute.
Therefore, the foregoing description all is illustrative in all respects, and does not have limited.Patent claim of the present invention is set forth by claims, and all changes or the deformation form that are drawn by equal notion all belong to scope of the present invention.
Claims (24)
1, a kind of plasma display system is characterized in that: it is included in to be distributed in from the gray-scale value of each pixel of the vision signal of outside input the 1 half of any one value the gray-scale value in the specialized range that adds deduct transfers device; Oppositely the vision signal of device input is transferred in gray correction the above-mentioned the 1 half, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the 1st image processor that subdomain shines upon; The reverse above-mentioned vision signal of gray correction from the outside input, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the 2nd image processor that subdomain shines upon; According to whether being the moving region of image, select and export in the subdomain mapping code of the subdomain mapping code of above-mentioned the 1st image processor input or the input of above-mentioned the 2nd image processor the subdomain mapping code selector of any one.
2, plasma display system according to claim 1 is characterized in that: it also comprises according to the gray-value variation between the vision signal of above-mentioned continuous pictures frame from outside input, detects the moving region detecting device of above-mentioned moving region.
3, plasma display system according to claim 1 is characterized in that: the above-mentioned the 1 half transfers device to use with the pattern mask of the above-mentioned gray-scale value that adds deduct as coefficient, carries out above-mentioned adding deduct.
4, plasma display system according to claim 3 is characterized in that: the above-mentioned the 1 half transfers device to use has mutually different above-mentioned coefficient, plural at least above-mentioned pattern mask.
5, plasma display system according to claim 4, it is characterized in that: the above-mentioned the 1 half transfers device to use mutually different above-mentioned pattern mask at each plural at least continuous pictures frame, uses mutually different above-mentioned pattern mask at any one above-mentioned image frame.
6, plasma display system according to claim 3 is characterized in that: be distributed in above-mentioned pattern mask above-mentioned coefficient and be 0.
7, plasma display system according to claim 1, it is characterized in that: it also comprise transfer the difference value of gray-scale value of the vision signal of device input to multiply by the weighted value of regulation the above-mentioned vision signal and the above-mentioned the 1 half from outside input after, with its to the above-mentioned the 1 half transfer the device input vision signal neighborhood pixels diffusion the 2 half transfer device.
8, plasma display system according to claim 7 is characterized in that: the weighted value of afore mentioned rules is different along with the position of above-mentioned neighborhood pixels.
9, plasma display system according to claim 7 is characterized in that: the weighted value of afore mentioned rules has arbitrary value.
10, according to any described plasma display system in the claim 1 to 9, it is characterized in that: when all greys were 256, the gray-scale value in the afore mentioned rules scope was more than 0 below 10.
11, plasma display system according to claim 1 is characterized in that: the gray-scale value in the afore mentioned rules scope is an integer.
12, plasma display system according to claim 1 is characterized in that: when the gray-scale value of vision signal of input is identical, and the subdomain mapping code that above-mentioned the 1st image processor is identical with above-mentioned the 2nd image processor output.
13, a kind of image processing method of plasma display system is characterized in that it comprised with the stage:
(a), the stage of any one value the gray-scale value in being distributed in the specialized range that adds deduct from the gray-scale value of each pixel of the vision signal of outside input;
(b), the reverse vision signal of above-mentioned (a) the stage input of gray correction, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the stage that subdomain shines upon;
(c), the reverse above-mentioned vision signal of gray correction from the outside input, partly mediate reason because of the decimal gray-scale value that oppositely gray correction takes place after, carry out the stage that subdomain shines upon;
(d), according to whether being the moving region of image, select and export in the subdomain mapping code of the subdomain mapping code of above-mentioned (b) stage input or the input of above-mentioned (c) stage the stage of any one.
14, the image processing method of plasma display system according to claim 13 is characterized in that it also comprises: according to the gray-value variation between the vision signal of above-mentioned continuous pictures frame from outside input, detect the stage of above-mentioned moving region.
15, the image processing method of plasma display system according to claim 13 is characterized in that: in above-mentioned (a) stage, use with the pattern mask of the above-mentioned gray-scale value that adds deduct as coefficient, carry out above-mentioned adding deduct.
16, the image processing method of plasma display system according to claim 15 is characterized in that: in above-mentioned (a) stage, use to have mutually different above-mentioned coefficient, plural at least above-mentioned pattern mask.
17, the image processing method of plasma display system according to claim 16, it is characterized in that: in above-mentioned (a) stage, use mutually different above-mentioned pattern mask at each plural at least continuous pictures frame, use mutually different above-mentioned pattern mask at any one above-mentioned image frame.
18, the image processing method of plasma display system according to claim 15 is characterized in that: be distributed in above-mentioned pattern mask above-mentioned coefficient and be 0.
19, the image processing method of plasma display system according to claim 13, it also comprises: with above-mentioned from outside input vision signal and after the difference value of the gray-scale value of the vision signal of input of above-mentioned (a) stage multiply by the weighted value of regulation, with its stage to the neighborhood pixels diffusion of the vision signal of above-mentioned (a) stage input.
20, the image processing method of plasma display system according to claim 19 is characterized in that: the weighted value of afore mentioned rules is different along with the position of above-mentioned neighborhood pixels.
21, the image processing method of plasma display system according to claim 19 is characterized in that: the weighted value of afore mentioned rules has arbitrary value.
22, according to the image processing method of any described plasma display system in the claim 13 to 21, it is characterized in that: when all greys were 256, the gray-scale value in the afore mentioned rules scope was more than 0 below 10.
23, the image processing method of plasma display system according to claim 22 is characterized in that: the gray-scale value in the afore mentioned rules scope is an integer.
24, the image processing method of plasma display system according to claim 13 is characterized in that: when the gray-scale value of vision signal of input is identical, and the subdomain mapping code that above-mentioned (b) stage is identical with above-mentioned (c) stage output.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060001878A KR20070074120A (en) | 2006-01-06 | 2006-01-06 | Plasma display apparatus and image processing method thereof |
| KR1020060001878 | 2006-01-06 |
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| Publication Number | Publication Date |
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| CN1924978A true CN1924978A (en) | 2007-03-07 |
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| CNA2006101596065A Pending CN1924978A (en) | 2006-01-06 | 2006-09-26 | Plasma display device and its image processing method |
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| CN (1) | CN1924978A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8395645B2 (en) | 2008-05-14 | 2013-03-12 | Panasonic Corporation | Plasma display device and drive method of plasma display panel |
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2006
- 2006-01-06 KR KR1020060001878A patent/KR20070074120A/en not_active Application Discontinuation
- 2006-09-26 CN CNA2006101596065A patent/CN1924978A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8395645B2 (en) | 2008-05-14 | 2013-03-12 | Panasonic Corporation | Plasma display device and drive method of plasma display panel |
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| KR20070074120A (en) | 2007-07-12 |
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