CN1975828A - Image processing equipment for plasma displaying panel - Google Patents
Image processing equipment for plasma displaying panel Download PDFInfo
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- CN1975828A CN1975828A CNA200510110825XA CN200510110825A CN1975828A CN 1975828 A CN1975828 A CN 1975828A CN A200510110825X A CNA200510110825X A CN A200510110825XA CN 200510110825 A CN200510110825 A CN 200510110825A CN 1975828 A CN1975828 A CN 1975828A
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Abstract
The invention is image processing devices for plasma display panels, including: dynamic APL processing part which detects the status of input video data and conduct APL processing, image correcting part which take the output from dynamic APL processing part to do further processing, sub-field mapping part which performs sub field mapping and images data sorting part which reorder sub-field mappings according to electrode lines of each address.
Description
Technical field
The present invention is the technology of relevant Plasmia indicating panel, the image processing equipment of a kind of Plasmia indicating panel of average picture level (Average Picture Level is hereinafter to be referred as the APL) value calculating method when especially handling about the improvement portrait.
Background technology
In general, Plasmia indicating panel is that the partition wall that forms between front substrate and the back substrate forms a unit cell, and the main discharge gas of mixed gas (Ne+He) of containing neon (Ne), helium (He) or neon and helium and so on and the inert gas of small amount of xenon are arranged in each unit.When discharging because of HF voltage, inert gas produces vacuum ultraviolet (Vacuum Ultraviolet rays), and makes the light-emitting phosphor that forms between the partition wall, embodies portrait.Such Plasmia indicating panel can be realized thin and light formation, therefore receives much attention as display device of future generation.
Fig. 1 is the synoptic diagram of the general Plasmia indicating panel structure of expression.
As shown in Figure 1, Plasmia indicating panel is front panel 100 and the parallel at certain intervals combination of back faceplate panels 110.Front panel is that formation a plurality of that are arranged with scan electrode 102 on the display surface-face glass 101 of portrait and keep 103 one-tenths at electrode pair keep electrode pair; Back faceplate panels be form have on the back surface glass 111 at the back side can with above-mentioned a plurality of electrode dual crossings of keeping, arranged a plurality of address electrodes 113.
Front panel 100 is at a discharge cell, for mutual discharge, and keep the luminous scan electrode in unit 102 and keep electrode 103, promptly possess the transparency electrode (a) that forms with transparent ITO material and the scan electrode 102 of bus (Bus) electrode (b) made with metal material and keep 103 one-tenth dimorphisms one-tenth of electrode.Scan electrode 102 and keep electrode 103 and be limited discharge current; and rise electrode two between the more than one dielectric layer 104 of insulating effect cover; in order to make discharging condition become easier, form the protective seam 105 of electroplating magnesium oxide (Mgo) above the upper dielectric layer 104.
Back faceplate panels 110 is for forming a plurality of discharge spaces, and promptly the shape of stripes of discharge cell (or enclosure wall shape) partition wall 112 is kept parallel and arranged.In addition, operation address discharge, and produce vacuum ultraviolet a plurality of address electrode 113 and be arranged in parallel with partition wall 112.The upper side of back faceplate panels 110 produces at the RGB fluorophor 114 that shows the visible rays of drawing a portrait when having sprayed the address discharge.Form lower dielectric layer 115 between address electrode 113 and the fluorophor 114 in order to protect address electrode 113.
If explanation has the method for the embodiment Plasmia indicating panel portrait gray-scale value of this spline structure, just as shown in Figure 2.
Fig. 2 is the synoptic diagram that expression embodies existing Plasmia indicating panel portrait gray-scale value method.
As shown in Figure 2, portrait gray-scale value (Gray Level) technique of expression of existing Plasmia indicating panel is, a frame is divided into the different a plurality of subdomains of number of light emission times, each subdomain is divided into the reseting period (RPD) that is intended to reinitialize all unit again, be intended to select during the address of discharge cell (APD) and according to discharge time, embodies (SPD) during the keeping of gray-scale value.Give an example, if will show portrait with 256 gray-scale values, be equivalent to 1/60 second image duration (16.67ms) just as shown in Figure 2, be divided into 8 subdomains (SF1 to SF8), during 8 subdomains (SF1 to SF8) are divided into reseting period, address again respectively again, keep during.
During the reseting period of each subdomain and the address is that each subdomain is identical.Being intended to select the address discharge of discharge cell is to produce according to the voltage difference between address electrode and the scan electrode-transparency electrode.Be to increase during keeping at the ratio of each subdomain with 2n (but n=0,1,2,3,4,5,6,7).Like this, all different during the keeping of each subdomain, therefore adjust during the keeping of each subdomain, promptly keep discharge time, the gray-scale value of expression portrait.
According to such portrait gray-scale value technique of expression, illustrate and be intended to existing image processing equipment that the image data that connects from the outside is carried out image processing, just as shown in Figure 3.
Fig. 3 is for the synoptic diagram of existing Plasmia indicating panel image processing equipment is described.
As shown in Figure 3, existing Plasmia indicating panel image processing equipment comprises APL calculating part 30, contrary gray scale correction portion 31, shadow tone (Halftone) correction portion 32, subdomain mapping portion 33, data ordering portion 34 and frame internal memory 35.
Existing Plasmia indicating panel image processing equipment with this formation carries out APL in the RGB image data value of 30 pairs of outside inputs of APL calculating part and calculates, and the APL value of image output data is stored in frame internal memory 35.The APL value of Chu Cuning is that APL value with next frame compares like this, and it is dynamic to be used to detect present frame.Be used to promptly judge whether present frame belongs to moving image.
In addition, the image data of 31 pairs of above-mentioned APL calculating part 30 outputs of contrary gray scale correction portion carries out contrary gray scale to be corrected, shadow tone correction portion 32 carries out shadow tone and corrects, the portion of subdomain mapping afterwards 33 carries out the subdomain mapping, if output subdomain mapping (enum) data, data ordering portion 34 rearranges each address electrode lines is carried out the subdomain mapped data.
By such process, the image data of outside input is undertaken exporting after the image processing by certain image processing process.
Simultaneously, Plasmia indicating panel carries out image processing by the different images processing procedure to static images and moving image for embodying more high image quality, also possesses the image processing for this static images and moving image, detect the dynamic process means that whether belong to moving image, be applicable to image processing.
So existing image processing equipment is described, just as shown in Figure 4.
Fig. 4 is that the existing Plasmia indicating panel image processing equipment for key diagram 3 comprises the synoptic diagram at an example of the dynamic calculation portion of dynamic process.
As shown in Figure 4, existing Plasmia indicating panel image processing equipment also possesses dynamic calculation portion 40, detects from the image data of outside input dynamic.Give an example, the image data value of more present frame and next frame image data value judge that next frame is image, or static images, detect the dynamic of image data with this.
Dynamic calculation portion 40 also comprises the frame internal memory 41 that is intended to store a frame image data value.
In addition, as mentioned above, APL handles calculating part 30 and also comprises in order to calculate the APL value of image data, is intended to store the frame internal memory 35 of a frame image data.
Such Plasmia indicating panel image processing equipment be because detect the frame internal memory 35 that the frame internal memory 41 that above-mentioned dynamic dynamic calculation portion 40 comprises and the APL calculating part of handling for APL 30 comprise, be presented at 2 frames demonstrations of picture delay of picture.
In other words, in order to detect dynamically, a frame image data is stored in frame internal memory 41, cause being equivalent to delaying of a frame, for APL handles, the image data of a frame is stored in frame internal memory 35, be equivalent to delaying of a frame once more, the image that 2 frames take place altogether delays.
Therefore, be presented at the image of picture and the voice of output and have 2 frame gaps, cause the image of picture demonstration and the inconsistent problem of voice of output.
Summary of the invention
In order to solve above-mentioned such problem, the object of the invention is to provide a kind of image processing process of improving, and makes it can improve the image processing equipment of the Plasmia indicating panel that image and voice delay.
To achieve these goals, the image processing equipment of Plasmia indicating panel of the present invention is to comprise that following part is characteristics: detect from dynamic (Motion) of the image data of outside input, above-mentioned image data is averaged the dynamic and APL handling part that picture level (APL) is handled, to dynamically and the image data exported of the APL handling part image rectification portion that carries out image processing, the subdomain mapping portion that the image data that image rectification portion is handled carries out the subdomain mapping, according to each address electrode lines, rearrange the data ordering portion of the image data of subdomain mapping portion mapping.
Here, dynamic and APL handling part is to comprise that following part is characteristics: compare the data of previous frame with the present frame of the outside image data of importing, detect the dynamic of present frame, calculate the dynamic and APL calculating part that image data APL value is exported; According to each frame, be intended to store the frame internal memory portion of image data.
In addition, frame internal memory portion is that the previous frame image data of storage is characteristics.
In addition, image rectification portion carries out contrary gray scale correction and shadow tone correction to the image data dynamic and output of APL handling part, is output as characteristics.
Effect of the present invention:
As above detailed description, the image processing equipment of Plasmia indicating panel of the present invention moves the dynamic and process of calculating the APL value of the image data that detects outside input simultaneously, have the use that reduces the frame internal memory with this, improve the effect that signal of video signal and voice signal delay.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the synoptic diagram of the general Plasmia indicating panel structure of expression.
Fig. 2 is the synoptic diagram that expression embodies existing Plasmia indicating panel portrait gray-scale value method.
Fig. 3 is for the synoptic diagram of existing Plasmia indicating panel image processing equipment is described.
Fig. 4 is that the existing Plasmia indicating panel image processing equipment for key diagram 3 comprises the synoptic diagram at an example of the dynamic process portion of dynamic process.
Fig. 5 is the synoptic diagram for explanation Plasmia indicating panel image processing equipment of the present invention.
Fig. 6 is the synoptic diagram for the dynamic and APL handling part that is described in more detail Fig. 5.
The symbol description of major part in the accompanying drawing:
100: front panel 101: face glass
102: scan electrode 103: keep electrode
104: upper dielectric layer 105: protective seam
110: back faceplate panels 111: the back surface glass
112: partition wall 113: address electrode
114: luminescent coating 115: lower dielectric layer
A: transparency electrode b: bus electrode
Embodiment
Image processing equipment to Plasmia indicating panel of the present invention is elaborated below with reference to accompanying drawings.
Just as shown in Figure 5, Fig. 5 is the synoptic diagram for explanation Plasmia indicating panel image processing equipment of the present invention.
As shown in Figure 5, Plasmia indicating panel image processing equipment of the present invention comprises dynamically and APL handling part 50, image rectification portion 51, subdomain mapping portion 52, data ordering portion 53.
Here, above-mentioned dynamically and APL handling part 50 detect dynamic (Motion) of the image data of outside input, also the image data that the outside is imported averages picture level (Average Picture Level is hereinafter to be referred as APL) processing.
51 pairs of above-mentioned image datas dynamic and 50 outputs of APL handling part of image rectification portion carry out image processing.
The image data that above-mentioned image rectification portion of 52 pairs in subdomain mapping portion 51 handles carries out the subdomain mapping.
Here, if describe above-mentioned dynamic and APL handling part 50 in detail, also comprise dynamically and APL calculating part 60 and frame internal memory portion 61 in conjunction with Fig. 6.
Here, dynamic and APL calculating part 60 compares the data of the previous frame of RGB image data and the present frame of outside input, detects the dynamic of present frame.In addition, calculate the APL value output of image data.
Frame internal memory portion 61 store above-mentioned dynamically and APL calculating part 60 in order to detect dynamically, and each frame image data of calculating APL.
The image processing equipment action that this this invention Plasmia indicating panel is described is as follows.
If from the outside, as vision signal control (VSC:Video Signal Controller) chip (not diagram) input RGB (RGB) image data, just detect dynamically with the input image data, promptly dynamic and APL handling part 50 judges that the image data of present frame is the static images data, still dynamic image data also calculates the APL value of importing image data.Here, to above-mentioned dynamically and APL handling part 50 detect dynamically, the image data of promptly judging present frame is the static images data, or an example of dynamic image data, describes as follows.
Above-mentioned dynamic testing method is with the existing portrait of a plurality of frames, if the image data value of a frame and next frame is identical, just divides into static images; If the image data value of a frame and next frame is different, just divide into moving image.I.e. the image data value of more previous frame and the image data value of frame now, judge the image data value of previous frame and now the gap between the image data value of frame whether be in the boundary value of having set (Threshold), distinguish static images and moving image.Give an example,, select a certain size a plurality of fields at the display surface (not diagram) of display panel.Dynamic and APL calculating part 60 is discerned a frame image data value in a plurality of fields of selecting like this, is stored in frame internal memory portion 61.
Afterwards, if the image data of the next frame of input, just select the field of the Plasmia indicating panel (not have diagram) corresponding, the image data value of each frame in a plurality of fields of the such selection of identification with above-mentioned and so on a plurality of fields.According to every field, whether identical the image data value of identification judged relatively like this.
As top explanation, according to every field judge whether identical after, compare with the boundary value of setting in advance (Threshold), judge that present frame is image, or static images.Give an example, in above-mentioned a plurality of fields, the corresponding field image data value in 2 field image data values and above-mentioned 2 fields of previous frame is different, just judges that the image of present frame is moving image.
Like this, detect when dynamic, need the image data value of more previous frame and frame image data value now,, should be stored in frame internal memory portion 61 to the image data value of previous frame for more such image data value.That is the image data of the previous frame of above-mentioned frame internal memory portion's 61 storages.
Simultaneously, illustrate that above-mentioned image data APL computing method dynamic and APL handling part 50 are as follows.As above-mentioned dynamically and the dynamic testing method of APL handling part 50, in order to detect dynamically, promptly be the image data of image for the image data of judging present frame, or the image data of static images, the image data of a frame is stored in dynamically and the frame internal memory portion 61 of APL handling part 50.Therefore, dynamically and APL handling part 50 for APL calculates, need not to store separately the image data of a frame, for detect above-mentioned dynamically, a frame image data that utilizes frame internal memory portion 61 to store, operation APL calculating gets final product.The result, in order to detect dynamically and APL calculating, prior art is utilized two frame internal memories, stored the image data of two frames, but the present invention is dynamic and APL handling part 50 operation detection of dynamic and an APL processing, therefore stores a frame image data at a frame internal memory 61, reduce the frame amount of memory with this, though the image of prior art and voice have delaying of two frames, the present invention makes image and voice have a frame to delay, improve delaying of image and voice.
Afterwards, the image data that above-mentioned dynamic and APL handling part 50 is handled carries out image rectification in image rectification portion 51, exports.51 pairs of above-mentioned image datas dynamic and 50 outputs of APL handling part of such image rectification portion carry out contrary gray scale correction and shadow tone is corrected, and export.
As mentioned above, 52 pairs in subdomain mapping portion is carried out image rectification by image rectification portion 51 and the image data exported carries out the subdomain mapping, afterwards, is arranged in each address electrode (X) line respectively by data ordering portion 53.Afterwards, above-mentioned data of being arranged by data ordering portion 53 are connected to each address electrode (X) by certain drive integrated circult (Drive IC), and portrait is embodied in Plasmia indicating panel.
Like this, the portrait that is embodied in Plasmia indicating panel a frame arranged and voice signal between delay.As mentioned above, at dynamic and APL handling part 50, detection of dynamic and APL that a frame image data that utilizes a frame internal memory 61 to store moves image data simultaneously calculate, and delay to be reduced to a frame with this image and voice.Therefore improve the inconsistent of image and voice.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (4)
1, a kind of image processing equipment of Plasmia indicating panel is characterized in that comprising following part:
Detection from the image data of outside input dynamically, to above-mentioned image data average that picture level handles dynamically and the average picture level handling part;
To above-mentioned dynamically and the image data of the average picture level handling part output image rectification portion that carries out image processing;
The subdomain mapping portion that the image data that image rectification portion is handled carries out the subdomain mapping;
According to each address electrode lines, rearrange the data ordering portion of the image data of subdomain mapping portion mapping.
2, the image processing equipment of Plasmia indicating panel as claimed in claim 1 is characterized in that:
Dynamic and average picture level handling part comprises following part:
Relatively the data of the previous frame of the image data of said external input and present frame detect the dynamic of present frame, calculate the dynamic and average picture level calculating part of the average picture level value output of above-mentioned image data;
According to each frame, store the frame internal memory portion of above-mentioned image data.
The image processing equipment of 3 Plasmia indicating panels as claimed in claim 2 is characterized in that:
Above-mentioned frame internal memory portion stores above-mentioned previous frame image data.
4, the image processing equipment of Plasmia indicating panel as claimed in claim 1 is characterized in that:
Above-mentioned image rectification portion be to above-mentioned dynamically and the image data of average picture level handling part output carry out that contrary gray scale is corrected and the shadow tone correction is exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510110825XA CN1975828A (en) | 2005-11-28 | 2005-11-28 | Image processing equipment for plasma displaying panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510110825XA CN1975828A (en) | 2005-11-28 | 2005-11-28 | Image processing equipment for plasma displaying panel |
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| Publication Number | Publication Date |
|---|---|
| CN1975828A true CN1975828A (en) | 2007-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200510110825XA Pending CN1975828A (en) | 2005-11-28 | 2005-11-28 | Image processing equipment for plasma displaying panel |
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| Country | Link |
|---|---|
| CN (1) | CN1975828A (en) |
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2005
- 2005-11-28 CN CNA200510110825XA patent/CN1975828A/en active Pending
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