CN102402939A - Plasma display screen and method and device for controlling same - Google Patents
Plasma display screen and method and device for controlling same Download PDFInfo
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- CN102402939A CN102402939A CN2011104579039A CN201110457903A CN102402939A CN 102402939 A CN102402939 A CN 102402939A CN 2011104579039 A CN2011104579039 A CN 2011104579039A CN 201110457903 A CN201110457903 A CN 201110457903A CN 102402939 A CN102402939 A CN 102402939A
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Abstract
The invention provides a plasma display screen and a method and device for controlling the same. The method comprises the following steps: dividing the display screen of the plasma display screen into a plurality of sub-screens, detecting to find whether the sub-screens are static or not, and reducing the brightness of the static sub-screens if some or all of the sub-screens are static. In the invention, because the whole display screen of the plasma display screen is divided into blocks, the sub-screens are detected to find whether the sub-screens are static or not, and the brightness of the static sub-screens is reduced, the residual images can be eliminated completely, and the quality of the moving images can not be affected.
Description
Technical field
The present invention relates to field of display, in particular to a kind of plasma display and control method and device.
Background technology
Many son display techniques that adopt AC plasma display (AC-PDP) realize that the multi-grey level of image shows.The PDP module is adopting a son isolation technics (ADS) to realize in the process of picture demonstration, and its gray level representation is to adopt the mode of keeping pulse PWM modulation to realize.Dominant mechanism is that the ternary gas that activates the He+Ne+Xe in the module discharge cell produces that ultraviolet ray excited fluorescent powder sends red (R), green (G), blue (B) three coloured light lines realize that through the ADS type of drive colored gray scale shows.
The phosphor powder layer of the MgO layer of upper substrate and infrabasal plate in procedure for displaying is because receive action of ultraviolet ray; Variation along with picture pattern; The MgO of each unit and fluorescent powder become different to the contribution of brightness in the whole image; The variation of the corresponding picture of this variation relatively lags behind, and the rest time of picture is long more, and retardation time is also big more.Therefore, after still frame changes, the image retention of former frame picture can appear on the one frame picture of back.Thereby the generation of eliminating this image retention is an important content that improves PDP module image quality.
In concrete test process, find to keep the variation that discharge and reset discharge can cause the luminescence unit characteristic, this kind variation will cause the image retention of image, remedies the image retention that can reduce image through image, to reach the purpose that promotes the demonstration image quality.
Traditional solution comprises three kinds of modes:
1 does the white image of the whole audience in interface, when the user finds on the picture that image retention is relatively more serious, utilize the white image of the telepilot incision whole audience, with resetting of all unifying of each display unit, addressing and maintenance process.Promote the temperature of each unit through this scheme, and resetting current and the secondary state of each unit reached unanimity solution damaged picture problem.But this scheme belongs to passive solution, has in general arrived relatively serious situation of people's visual sense feeling image retention, is difficult to eliminate whole issue through complete white the discharge of short time.
2 do image static brightness reduce and handle, after image enters into still frame, after 1 minute, begin the brightness of whole image is progressively reduced, this reduction process is that human eye institute can not perceive, and solves image retention problem through this progressively process of reduction.The problem that this solution mainly exists is that the display quality of whole image will be affected after brightness of image progressively reduced; This in addition reduction can not eliminate the problem of image retention fully; Can only be that part weakens; Along with the increase of picture still time, the image retention problem of image still can not get solving.
3 do the mobile processing of tableaux: after picture enters into still frame; Judge through check circuit; Make then whole image with the distance of 1-2 pixel up and down, multi-direction unordered moving such as left and right, whole image " move " get up through this moving with the solution image retention problem.The main disadvantage of this scheme is: the mobile people's of being vision of picture is perceptible, and display quality is decreased.In addition, most of image is block, and moving 1-2 pixel can not can be luminous uniformly with whole unit, can not eliminate the problem of image retention fully, and mobile pixel is too much, and human eye can't be accepted.
Problem to eliminating the image image retention of plasma display in the correlation technique does not fully propose effective solution at present as yet.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of plasma display and control method and device, to solve the problem of the image image retention that can't eliminate plasma display fully.
To achieve these goals, according to an aspect of the present invention, a kind of control method of plasma display is provided.
Control method according to plasma display of the present invention comprises: piecemeal is carried out in the display frame of plasma display, obtains a plurality of sprites; Whether each sub-picture that detects in a plurality of sprites is static; And when in a plurality of sprites, having static sprite, reduce the brightness of static sprite.
Further; Detect each sub-picture in a plurality of sprites is whether static to comprise whether first sprite that detects in a plurality of sprites is static, wherein, detect first sprite static comprising whether: control first counter and begin counting; Wherein, corresponding first sprite of first counter; Calculate the absolute value of difference of the APL value of adjacent two two field pictures of first sprite, obtain the APL difference; Judge that whether the APL difference is greater than preset APL difference limen value; , control first counter and increase 1 during in the APL difference greater than preset APL difference limen value; When the APL difference is less than or equal to preset APL difference limen value, control first counter O reset; Judge that whether numerical value in first counter is greater than first preset value; And the numerical value in first counter confirms that first sprite is static during greater than first preset value.
Further, the brightness that reduces static sprite comprises the brightness that reduces by first sprite, and after the brightness that reduces by first sprite, this method also comprises: the absolute value of difference that calculates the APL value of adjacent two two field pictures of first sprite after reducing brightness; Whether the absolute value of difference of APL value of judging adjacent two two field pictures is greater than preset APL difference limen value; When the absolute value of the difference of the APL of adjacent two two field pictures value during, with the low three bit data negate respectively of the image of preset frame number before in the Preset Time section greater than preset APL difference limen value; Image to the preset frame number after the negate carries out LPF respectively; And in the present image of image to the first sprite of the preset frame number behind the stack LPF.
Further, the brightness that reduces by first sprite comprises: the numerical value in first counter reduces brightness to the first brightness of first sprite during greater than second preset value; And the numerical value in first counter reduces brightness to the second brightness of first sprite during greater than the 3rd preset value, and wherein, the 3rd preset value is greater than first preset value, and second preset value is greater than the 3rd preset value, and second brightness is less than first brightness.
Further, after the display frame of plasma display was carried out piecemeal, obtained a plurality of sprites, method also comprised: the border of each sub-picture in a plurality of sprites is blured or smoothing processing.
To achieve these goals, according to a further aspect in the invention, a kind of control device of plasma display is provided.The control method that is used to carry out any plasma display provided by the invention according to the control device of plasma display of the present invention.
To achieve these goals, according to a further aspect in the invention, a kind of control device of plasma display is provided.Control device according to this plasma display comprises: divide module, piecemeal is carried out in the display frame that is used for plasma display, obtains a plurality of sprites; Detection module, whether each sub-picture that is used for detecting a plurality of sprites is static; And control module, be used for when there is static sprite in a plurality of sprites, reduce the brightness of static sprite.
Further, detection module comprises first detection module, and whether first sprite that is used for detecting a plurality of sprites is static; Wherein, first detection module comprises: the counting submodule, and control first counter and begin counting; Wherein, corresponding first sprite of first counter; Calculating sub module is used to calculate the absolute value of difference of the APL value of adjacent two two field pictures of first sprite, obtains the APL difference; First judges submodule, is used to judge that whether the APL difference is greater than preset APL difference limen value; The counting submodule also is used for, controlling first counter and increasing 1 during greater than preset APL difference limen value in the APL difference, is less than or equal to when presetting APL difference limen value in the APL difference, controls first counter O reset; Second judges submodule, and whether the numerical value that is used for judging first counter is greater than first preset value; And definite submodule, when being used for numerical value at first counter, confirm that first sprite is static greater than first preset value.
Further, control module comprises first control module, is used to reduce the brightness of first sprite, and wherein, this device also comprises: computing module is used to calculate the absolute value of difference of the APL value of adjacent two two field pictures of first sprite after reducing brightness; Judge module, whether the absolute value of difference of APL value that is used to judge adjacent two two field pictures is greater than preset APL difference limen value; The negate module is used for when the absolute value of the difference of the APL of adjacent two two field pictures value during greater than preset APL difference limen value, with the low three bit data negate respectively of the image of preset frame number before in the Preset Time section; Filtration module is used for the image of the preset frame number after the negate is carried out LPF respectively; And laminating module, the present image of image to the first sprite of the preset frame number behind the LPF that is used for superposeing.
Further, first control module comprises: first controlling sub, when being used for numerical value at first counter greater than second preset value, reduce brightness to the first brightness of first sprite; And second controlling sub, when being used for numerical value at first counter, reduce brightness to the second brightness of first sprite greater than the 3rd preset value; Wherein, The 3rd preset value is greater than first preset value, and second preset value is greater than the 3rd preset value, and second brightness is less than first brightness.
To achieve these goals, according to a further aspect in the invention, a kind of plasma display is provided.
Plasma display according to the present invention comprises the control device of any one plasma display provided by the invention.
Through the present invention, adopt the control method of the plasma display that may further comprise the steps: piecemeal is carried out in the display frame of plasma display, obtains a plurality of sprites; Whether each sub-picture that detects in a plurality of sprites is static; And when in a plurality of sprites, having static sprite; Reduce the brightness of static sprite; Solved and to have eliminated the problem of the image image retention of plasma display fully, and then reached the image image retention of thorough elimination plasma display, and do not influenced the moving image effect.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the process flow diagram according to the control method of the plasma display of first embodiment of the invention;
Fig. 2 is the display frame synoptic diagram according to the plasma display of the embodiment of the invention;
Fig. 3 is according to the brightness of the sprite of the plasma display of the embodiment of the invention and the graph of a relation of rest time;
Fig. 4 is the process flow diagram according to the control method of the plasma display of second embodiment of the invention;
Fig. 5 is the block diagram according to the control device of the plasma display of the embodiment of the invention; And
Fig. 6 is the composition synoptic diagram according to the plasma display of the embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Fig. 1 is the process flow diagram according to the control method of the plasma display of first embodiment of the invention, and is as shown in Figure 1, and this method comprises that following step S102 is to step S104:
Step S102: piecemeal is carried out in the display frame of plasma display; Obtain a plurality of sprites; For example the module to the WXGA high definition can be divided into the A*B piece with whole display frame; As shown in Figure 2, the display frame of plasma display is cut apart by the piece that 16*9 does image, obtain 144 sub-picture.
Step S104: whether each sub-picture that detects in a plurality of sprites is static; Display frame with plasma display shown in Figure 2 is example; Whether take exercises and static detection to every block of image, it is static to detect 144 sub-picture respectively, and the 4*2 sub-picture that detects the upper right corner is static.
Step S106: when in a plurality of sprites, having static sprite; Reduce the brightness of static sprite; Display frame with plasma display shown in Figure 2 is example; Reduce the brightness of 4*2 the static sprite in the upper right corner, reduce discharge cell long-time fixed mode discharge cause unusual.
In this embodiment, different with prior art, not that whole display picture is reduced brightness; But display picture is carried out piecemeal; The sprite that piecemeal is obtained carries out individual processing, comprises that the sprite that piecemeal is obtained carries out sound and detects, and reduces the brightness of detected static sprite then; Thereby according to reset, addressing and maintenance process design new reset wave; And reduce maintenance process the damage of A electrode and fluorescent powder is slackened the generation of image retention, thereby thoroughly eliminate the image image retention of plasma display, and do not influence the display effect of moving image.
In step S104, detect single sprite when whether static, be example with the arbitrary sprite that detects in a plurality of sprites, whether static, realize to step S1048 through following steps S1041 if for example detecting first sprite:
Step S1041: after obtaining first sprite, control first counter and begin counting through step S102, wherein, corresponding first sprite of first counter.
Step S1042: calculate the absolute value of difference of the APL value (being the average picture level value) of adjacent two two field pictures of first sprite, obtain the APL difference.
Step S1044: whether judge the APL difference greater than preset APL difference limen value, in the APL difference during greater than preset APL difference limen value, execution in step S1045, otherwise execution in step S1046.
Step S1045:, control first counter and increase 1 during in the APL difference, return step S1042 after increasing 1 greater than preset APL difference limen value.
Step S1046: when the APL difference is less than or equal to preset APL difference limen value, control first counter O reset, execution in step S1047 before zero clearing returns step S1042 after zero clearing.
Step S1047: whether judge numerical value in first counter greater than first preset value, the numerical value in first counter is during greater than first preset value, execution in step S1048, otherwise return step S1042.
Step S1048: the numerical value in first counter confirms that first sprite is static during greater than first preset value.
Whether static whether through above step, it is static to have detected first sprite, correspondingly, detecting other each sub-picture when, can adopt identical step, no longer is repeated in this description here.
After definite first sprite was static, step S106 reduced the brightness of this first sprite.Numerical value in the first corresponding counter of first sprite not simultaneously, when also being static asynchronism(-nization), the degree of image image retention is also different; In order thoroughly to eliminate image retention and not influence the picture drop-out effect; Rest time not simultaneously, the amplitude that first sprite reduces brightness is also different, preferably; The brightness that reduces by first sprite comprises: the numerical value in first counter reduces brightness to the first brightness of first sprite during greater than second preset value; Numerical value in first counter reduces brightness to the second brightness of first sprite during greater than the 3rd preset value, and wherein, the 3rd preset value is greater than first preset value, and second preset value is greater than the 3rd preset value, and second brightness is less than first brightness.
As shown in Figure 3, the numerical value in first counter is by the first preset value T
0Increase to maximum of T
XThe time, the brightness that reduces back display sprite is decreased to minimum brightness MIN by high-high brightness MAX, is not unlimited reduction brightness here, and minimum brightness is set, and avoids influencing image display effect.
Preferably, for fear of in the process that reduces sprite brightness, producing image retention problem, after the brightness that reduces static sprite, carry out the compensation of dynamic image.After reducing by first sprite, be example to the dynamic compensation of first sprite, this method also comprises: the absolute value of difference that calculates the APL value of adjacent two two field pictures of first sprite after reducing brightness; Whether the absolute value of difference of APL value of judging adjacent two two field pictures is greater than preset APL difference limen value; When the absolute value of the difference of the APL of adjacent two two field pictures value during, with the low three bit data negate respectively of the image of preset frame number before in the Preset Time section greater than preset APL difference limen value; Image to the preset frame number after the negate carries out LPF respectively; And in the present image of image to the first sprite of the preset frame number behind the stack LPF, as the compensation of data output with further solution image retention problem.
In whole compensation process; The boundary of each sprite need be done Flame Image Process does not excessively have profile to guarantee after treatment image section and original image boundary; This Flame Image Process can adopt level and smooth or simply blur and realize, the border of each sub-picture in a plurality of sprites is blured or smoothing processing.
Fig. 4 is the process flow diagram according to the control method of the plasma display of second embodiment of the invention, and is as shown in Figure 4, may further comprise the steps:
Image is carried out piecemeal, entire image is divided into the A*B piece; Whether carry out initialization behind the piecemeal, it is static to detect first sprite, still image zone bit S=0, and image retention produces zone bit IS=0; This moment, control counter began counting, initial technological T=0; Carry out APL statistics then, realize the sound of image is detected, calculate a two field picture APL value through APL, set a threshold value M after; The APL value X1 of this piece image of first frame and the APL value X2 of this piece image of second frame are compared, when | X1-X2|＞M, think that image is static; Rest time, T increased by 1, when | X1-X2|＜M, thought that figure is dynamic change; T zero clearing rest time is calculated the APL value X1 of this piece image of second frame and the APL value X2 of this piece image of the 3rd frame then and is compared, when | X1-X2|＞M; Think that image is static, rest time, T increased by 1, when | X1-X2|＜M; Think that figure is dynamic change, T zero clearing rest time, by that analogy.
As piece image freeze time T＜T0, still image zone bit S=0, image retention produces zone bit IS=0, and presentation video does not produce any image image retention always at the volley, therefore this image is not done any special Flame Image Process; Behind piece image freeze time T＞T0, still image zone bit S=1, image retention produces zone bit IS=1, and the control circuit of expression plasma display is cut into still image image retention processing module.At this moment, will adopt still image deal with the static image retention problem of image to this piece image, in static image retention is handled mainly the reduction through brightness reduce discharge cell long-time fixed mode discharge cause unusual; After still image is handled, still image zone bit S=0, image retention produces zone bit IS=0.
Detect once more | X1-X2|＞M; Still image zone bit S=0, image retention produces zone bit IS=1, has produced image retention during presentation video is handled in front; Control circuit is cut into dynamic image image retention processing module; Accomplish when resume module, treatment scheme is technological, enters into the normal picture processing module.Wherein, the main processing mode that adopts is in dynamic image image retention processing module: carry out low-pass filtering treatment after the low three bit data negates of image with preceding 10 frames of this first demonstration sprite, this filtering can be adopted the image filtering processing module of standard.Filtered stacked data is added on this unit current frame data compensation as data output to solve image retention problem.
As shown in Figure 2; Display has the image in the 4*2 sub-picture zone at last angle to belong to the image that always occurs in the drawings; In order to reduce the influence of image retention that this image occurs to successive image, entire image is cut apart by the piece that 16*9 does image, take exercises and static detection to every block of image; Judge that in detection carry out first kind of compensation: the brightness of image progressively reduced when a 4*2 cell block in the upper right corner remained static in a period of time.After image switching; This part image not in; Cut second kind of compensation: the dynamic image compensation; This compensation mainly is to hang down three negates behind preceding 10 two field pictures of accumulation, the low-pass filtering treatment after the negate, the picture distortion that the back compensation data of finishing dealing with causes with the solution image retention to the original unit position.
Fig. 5 is the block diagram according to the control device of the plasma display of the embodiment of the invention, and is as shown in Figure 5, and this control device comprises: divide module 20, detection module 40 and control module 60.
In this embodiment, different with prior art, not that whole display picture is reduced brightness; But utilize division module 20 that display picture is carried out piecemeal; The sprite that piecemeal is obtained carries out individual processing, comprises that the sprite that utilizes 40 pairs of piecemeals of detection module to obtain carries out sound and detects, and control module 60 reduces the brightness of detected static sprite then; Thereby according to reset, addressing and maintenance process design new reset wave; And reduce maintenance process the damage of A electrode and fluorescent powder is slackened the generation of image retention, thereby thoroughly eliminate the image image retention of plasma display, and do not influence the display effect of moving image.
Preferably, in detection module 40, comprise first detection module; Whether first sprite that is used for detecting a plurality of sprites is static, and wherein, first detection module comprises: the counting submodule; Control first counter and begin counting, wherein, corresponding first sprite of first counter; Calculating sub module is used to calculate the absolute value of difference of the APL value of adjacent two two field pictures of first sprite, obtains the APL difference; First judges submodule, is used to judge that whether the APL difference is greater than preset APL difference limen value; The counting submodule also is used for, controlling first counter and increasing 1 during greater than preset APL difference limen value in the APL difference, is less than or equal to when presetting APL difference limen value in the APL difference, controls first counter O reset; Second judges submodule, and whether the numerical value that is used for judging first counter is greater than first preset value; And definite submodule, when being used for numerical value at first counter, confirm that first sprite is static greater than first preset value.In like manner, also comprise second detection module similar, the 3rd detection module with first detection module ... The N detection module is respectively applied for and detects second sprite, the 3rd sprite ... Whether the N sprite is static.
Control module comprises first control module, is used to reduce the brightness of first sprite, and after definite first sprite was static, first control module reduced the brightness of this first sprite.Numerical value in the first corresponding counter of first sprite not simultaneously, when also being static asynchronism(-nization), the degree of image image retention is also different; In order thoroughly to eliminate image retention and not influence the picture drop-out effect, rest time not simultaneously, the amplitude that first sprite reduces brightness is also different; Wherein, preferably, first control module comprises: first controlling sub; When being used for numerical value at first counter, reduce brightness to the first brightness of first sprite greater than second preset value; And second controlling sub, when being used for numerical value at first counter, reduce brightness to the second brightness of first sprite greater than the 3rd preset value; Wherein, The 3rd preset value is greater than first preset value, and second preset value is greater than the 3rd preset value, and second brightness is less than first brightness.
Preferably, for fear of in the process that reduces sprite brightness, producing image retention problem, after the brightness that reduces static sprite, carry out the compensation of dynamic image.After reducing by first sprite, be example to the dynamic compensation of first sprite, this device also comprises: computing module is used to calculate the absolute value of difference of the APL value of adjacent two two field pictures of first sprite after reducing brightness; Judge module, whether the absolute value of difference of APL value that is used to judge adjacent two two field pictures is greater than preset APL difference limen value; The negate module is used for when the absolute value of the difference of the APL of adjacent two two field pictures value during greater than preset APL difference limen value, with the low three bit data negate respectively of the image of preset frame number before in the Preset Time section; Filtration module is used for the image of the preset frame number after the negate is carried out LPF respectively; And laminating module, the present image of image to the first sprite of the preset frame number behind the LPF that is used for superposeing, as the compensation of data output with further solution image retention problem.
Fig. 6 is the composition synoptic diagram according to the plasma display of the embodiment of the invention, and is as shown in Figure 6, and this plasma display comprises the control device of any one plasma display that provides in this embodiment.This control device outputs to the A electrode to the view data of input after cell picture detection of dynamic unit and sound image retention processing and control element (PCE) and back-end processing cell processing.
In cell picture detection of dynamic unit; Mainly judge whether image retention produces; Also be that it judges whether image is static; Adopt the detection module in embodiment illustrated in fig. 5 to realize,, just think that the picture of plasma display has produced image retention problem if the image freeze time surpasses regular hour length.
Sound image retention processing and control element (PCE) comprises static image retention processing module and dynamic image retention processing module.Wherein, After confirming that through cell picture detection of dynamic unit the picture of plasma display has produced image retention problem; Be cut into static image retention processing module; Still image image retention processing module mainly is to reduce the brightness of cell picture (being the sprite in the preceding text), according to reset, addressing and maintenance process design new reset wave and reduce maintenance process reduces and slacken image retention to the damage of A electrode and fluorescent powder generation.
If in static image retention processing module is handled, produced image retention, then cut to dynamic image image retention processing module.Dynamic image image retention processing module mainly is that the mode that the low gray scale image negate of the original image of employing generation image retention is superimposed upon on the present image reduces the influence that image retention produces vision.
From above description; Can find out that the present invention has realized following technique effect: display picture is carried out piecemeal, and the sprite that piecemeal is obtained carries out individual processing; Thereby thoroughly eliminate the image image retention of plasma display, and do not influence the display effect of moving image.
Need to prove; Can in computer system, carry out in the step shown in the process flow diagram of accompanying drawing such as a set of computer-executable instructions; And; Though logical order has been shown in process flow diagram, in some cases, can have carried out step shown or that describe with the order that is different from here.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the memory storage and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the control method of a plasma display is characterized in that, comprising:
Piecemeal is carried out in display frame to said plasma display, obtains a plurality of sprites;
Whether each sub-picture that detects in said a plurality of sprite is static; And
When in said a plurality of sprites, having static sprite, reduce the brightness of said static sprite.
2. the control method of plasma display according to claim 1; It is characterized in that; Detect each sub-picture in said a plurality of sprite is whether static to comprise whether first sprite that detects in said a plurality of sprites is static, wherein, detect said first sprite static comprising whether:
Control first counter and begin counting, wherein, corresponding said first sprite of said first counter;
Calculate the absolute value of difference of the APL value of adjacent two two field pictures of said first sprite, obtain the APL difference;
Judge that whether said APL difference is greater than preset APL difference limen value;
, control said first counter and increase 1 during in said APL difference greater than said preset APL difference limen value;
When said APL difference is less than or equal to said preset APL difference limen value, control said first counter O reset;
Judge that whether numerical value in said first counter is greater than first preset value; And
Numerical value in said first counter confirms that said first sprite is static during greater than said first preset value.
3. the control method of plasma display according to claim 2 is characterized in that, the brightness that reduces said static sprite comprises the brightness that reduces said first sprite, and after the brightness that reduces said first sprite, said method also comprises:
Calculate the absolute value of difference of the APL value of adjacent two two field pictures of said first sprite after reducing brightness;
Whether the absolute value of difference of APL value of judging said adjacent two two field pictures is greater than said preset APL difference limen value;
When the absolute value of the difference of the APL of said adjacent two two field pictures value during greater than said preset APL difference limen value,
With the preceding low three bit data negate respectively of presetting the image of frame number in the said Preset Time section;
Image to the preset frame number after the said negate carries out LPF respectively; And
In image to the present image of said first sprite of the preset frame number behind the stack LPF.
4. the control method of plasma display according to claim 3 is characterized in that, the brightness that reduces said first sprite comprises:
Numerical value in said first counter reduces brightness to the first brightness of said first sprite during greater than second preset value; And
Numerical value in said first counter reduces brightness to the second brightness of said first sprite during greater than the 3rd preset value,
Wherein, said the 3rd preset value is greater than said first preset value, and said second preset value is greater than said the 3rd preset value, and said second brightness is less than said first brightness.
5. the control method of plasma display according to claim 1; It is characterized in that; Piecemeal is carried out in display frame to said plasma display; After obtaining a plurality of sprites, said method also comprises: the border of each sub-picture in said a plurality of sprites is blured or smoothing processing.
6. the control device of a plasma display is characterized in that, comprising:
Divide module, be used for piecemeal is carried out in the display frame of said plasma display, obtain a plurality of sprites;
Detection module, whether each sub-picture that is used for detecting said a plurality of sprites is static; And
Control module is used for when there is static sprite in said a plurality of sprites, reduces the brightness of said static sprite.
7. the control device of plasma display according to claim 6 is characterized in that, said detection module comprises first detection module, and whether first sprite that is used for detecting said a plurality of sprites is static, and wherein, said first detection module comprises:
The counting submodule is controlled first counter and is begun counting, wherein, and corresponding said first sprite of said first counter;
Calculating sub module is used to calculate the absolute value of difference of the APL value of adjacent two two field pictures of said first sprite, obtains the APL difference;
First judges submodule, is used to judge that whether said APL difference is greater than preset APL difference limen value;
Said counting submodule also is used for, controlling said first counter and increasing 1 during greater than said preset APL difference limen value in said APL difference, when said APL difference is less than or equal to said preset APL difference limen value, controls said first counter O reset;
Second judges submodule, and whether the numerical value that is used for judging said first counter is greater than first preset value;
And
Confirm submodule, be used for during greater than said first preset value, confirming that said first sprite is static at the numerical value of said first counter.
8. the control device of plasma display according to claim 7; It is characterized in that; Said control module comprises first control module, is used to reduce the brightness of said first sprite, wherein; Said device also comprises: computing module is used to calculate the absolute value of difference of the APL value of adjacent two two field pictures of said first sprite after reducing brightness;
Judge module, whether the absolute value of difference of APL value that is used to judge said adjacent two two field pictures is greater than said preset APL difference limen value;
The negate module is used for when the absolute value of the difference of the APL of said adjacent two two field pictures value during greater than said preset APL difference limen value, with the low three bit data negate respectively of the image of preset frame number before in the said Preset Time section;
Filtration module is used for the image of the preset frame number after the said negate is carried out LPF respectively; And
Laminating module, the present image of the image of the preset frame number behind the LPF that is used for superposeing to said first sprite.
9. the control device of plasma display according to claim 8 is characterized in that, said first control module comprises:
First controlling sub when being used for numerical value at said first counter greater than second preset value, reduces brightness to the first brightness of said first sprite; And
Second controlling sub when being used for numerical value at said first counter greater than the 3rd preset value, reduces brightness to the second brightness of said first sprite,
Wherein, said the 3rd preset value is greater than said first preset value, and said second preset value is greater than said the 3rd preset value, and said second brightness is less than said first brightness.
10. a plasma display is characterized in that, comprises the control device of each described plasma display in the claim 6 to 9.
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