CN100452148C - Set for driving plasma panel, and driving method - Google Patents
Set for driving plasma panel, and driving method Download PDFInfo
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- CN100452148C CN100452148C CNB2005100952710A CN200510095271A CN100452148C CN 100452148 C CN100452148 C CN 100452148C CN B2005100952710 A CNB2005100952710 A CN B2005100952710A CN 200510095271 A CN200510095271 A CN 200510095271A CN 100452148 C CN100452148 C CN 100452148C
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- gray scale
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- data load
- acutance
- scale difference
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Abstract
A driving device of plasma display screen consists of data loading/ calculating unit for comparing grey scale difference between specific unit grey scale and grey scale connected to adjacent unit with set standard grey scale difference and for loading data on all units, acuteness raising unit for deciding acuteness size to be raised according to data-loading and for raising acuteness according to decided raising-amount of acuteness.
Description
Technical field
The present invention relates to the Drive And Its Driving Method of plasma panel.More particularly, be Drive And Its Driving Method about the plasma panel of acutance.
Background technology
Fig. 1 is the mask example that utilizes filter type in existing raising acutance (sharpness) method.The method that improves acutance is: unit (cell) gray scale of the border region that the gray scale size is begun to change is set as bigger than the gray scale of unit on every side, makes border region distincter.
For this reason, utilizing mode that mask filters as shown in Figure 1, is benchmark with central point (p1), in the horizontal direction or on the vertical direction, gets a 1 * n (n=natural number) or n * 1 mask respectively and shelters (masking), emphasizes that boundary is to improve acutance.Another kind method is by n * n mask, level not to be carried out mask respectively with vertical, but carry out disposable processing.
Simultaneously, the mask coefficient is fixed as suitable value according to the size of mask.At this moment, Cr1 to Cr5, the Cc1 to Cc5 among Fig. 1 all is the mask coefficient of relevant mask with C1 to C25.
Fig. 2 is an example that utilizes the raising acutance method of mask filter type.What (a) was shown among Fig. 2 is 5 unit, and what the numeral in the unit showed is the gray scale of correlation unit.(b) is the mask of giving the 1X3 of mask coefficient among Fig. 2.
As shown in Figure 2, gray scale is 10,10,15,10,10, just becomes boundary so gray scale is 15 unit.To Cell1, Cell2, when Cell3 carried out mask, the gray scale of the unit (Cell2) of central authorities was 10+{10 * (1)+10 * (2)+15 * (1) }=5.If to Cell2, Cell3, when Cell4 carried out mask, the gray scale of central location (Cell3) was 15+{10 * (1)+15 * (2)+10 * (1) }=25.If to Cell3, Cell4, when Cell5 carried out mask, the gray scale of central location (Cell4) was 10+15 * (1)+10 * (2)+10 * (1) }=5.By this process, final Cell2, Cell3, the gray scale of Cell4 is 5,25,5.That is, Cell2, Cell3, the gray scale of Cell4 is from 10,15, and 10 have become 5,25, and 5.The gray scale difference of Cell2 and Cell3 is increased to 20 from 5, and its boundary shows clearly.
But this when improving acutance and increase gray scale, it is many that the number of employed subregion becomes, so unit number of connecting in the unit/closing, be that data load (data load) increases, simultaneously, increased the burden that applies the data driver IC of data pulse to the X electrode.
Particularly this boundary appears at when intersecting figure (alternative pattern) or checker pattern (super pixel pattern), and data load sharply increases, and has increased the burden of data driver IC greatly.Refer at the intersection figure, all unit are all connected on the line, and the unit on next line then is the figure of Close All.
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide a kind of Drive And Its Driving Method: can prevent the excessive increase of data driver IC load, and can improve acutance with plasma panel of following function.
To achieve these goals, at received image signal and it is treated in the drive unit of plasma panel of image, described drive unit comprises with the lower part: a) data load calculating part, with discrete cell with on vertical and horizontal direction and the gray scale difference between the unit of discrete cell adjacency, compare with the standard grayscale difference of having set, and the data load of all unit is calculated; B) acutance raising portion, this acutance raising portion and above-mentioned data load determine acutance raising amount inversely, and from plural mask coefficient table, select the mask coefficient table corresponding to the acutance raising amount that is determined, thereby carry out the acutance process that improves.
Simultaneously, at received image signal and it is treated in the driving method of plasma panel of image, the driving method of plasma panel of the present invention may further comprise the steps: a) with the gray scale of discrete cell with on vertical and the horizontal direction and the gray scale difference between the gray scale of the unit of discrete cell adjacency, compare the step that the data load of whole unit is calculated with the standard grayscale extent of having set; B) determine the step of acutance raising amount inversely with above-mentioned data load; C) from plural mask coefficient table, select step corresponding to the mask coefficient table of the acutance raising amount of above-mentioned decision; And d), improves the step of acutance process according to above-mentioned selected mask coefficient table.
The Drive And Its Driving Method of plasma panel of the present invention has following effect: the acutance size that decides the needs raising according to data load, and according to acutance raising amount, use only mask coefficient table in the plural mask coefficient table, thereby can either prevent the excessive increase of data driver IC load, can improve acutance again.
Description of drawings
Fig. 1 is in the existing raising acutance method, the mask instance graph of utilization filter type.
Fig. 2 is the acutance raising method synoptic diagram that utilizes the filter type of mask.
Fig. 3 a is the synoptic diagram that video data loading and acutance improve magnitude relation.
Fig. 3 b is the mask coefficient synoptic diagram according to data load.
Fig. 4 is the block diagram of the drive unit of the plasma panel among the present invention.
Fig. 5 is the service chart of the data load calculating part among the present invention.
Embodiment
Below, with reference to the accompanying drawings embodiments of the invention are elaborated.
Fig. 3 a is the synoptic diagram that concerns between data load and the acutance raising amount.Fig. 3 b is the mask coefficient chart according to data load.
Shown in Fig. 3 a, the Drive And Its Driving Method of the plasma panel among the present invention improves acutance by data load, comes acutance is improved.That is,, reduce the raising degree of acutance, if data load hour increases the raising degree of acutance if when data load is big.
For this reason, shown in Fig. 3 b, provide with the acutance raising and measure corresponding plural mask coefficient table.
That is, have the 1st mask coefficient table to n mask coefficient table, the 1st mask coefficient table is corresponding to the acutance raising amount of maximum, and n mask coefficient table is corresponding to the acutance raising amount of minimum.
Prior art and data load are irrelevant, the only simple acutance that improves, and the mask coefficient is fixed, when so if data load is big, the burden of data driver IC, but the present invention is a size of adjusting acutance raising amount according to data load, and in order to adjust acutance raising amount size, has plural mask coefficient table.
Fig. 4 is the block diagram of the drive unit of plasma panel of the present invention.As shown in Figure 4, the drive unit of plasma panel of the present invention comprises with the lower part: anti-phase gray correction portion 410, gain adjustment part 420, data load calculating part 430, acutance raising portion 440, semitone adjustment (half-toning) portion 450, subregion mapping (subfield mapping) portion 460 and data ordering portion 470.
＜anti-phase gray correction portion 〉
Anti-phase gray correction portion 410 is modified to linear gamma characteristic with the non-linear gamma characteristic of the picture signal imported.
＜gain adjustment part 〉
The gain rank (gainlevel) of the picture signal of the gain 420 pairs of anti-phase gray corrections of process in adjustment part is adjusted.
＜data load (data load) calculating part 〉
Data load calculating part 430 with discrete cell with on vertical and horizontal direction in abutting connection with the gray scale difference between the unit of discrete cell, compare with standard level gray scale difference and standard vertical gray scale extent, and computational data loads.
Data load calculating part 430 comprises horizontal gray scale difference calculating part 431, vertical gray scale difference calculating part 433 and loaded value calculating part 435.
Horizontal gray scale difference calculating part 431 as shown in Figure 5, the picture signal that input is adjusted through the gain rank, gray scale difference to m unit on the 1st line (line) and above-mentioned m unit horizontal direction adjacent unit calculates, promptly horizontal gray scale difference is calculated, calculate the horizontal gray scale difference of each unit.
Vertical gray scale difference calculating part 433 calculates the gray scale difference of m unit on the 1st line and the m unit vertical direction adjacent unit on the above-mentioned 1+1 line as shown in Figure 5, promptly vertical gray scale difference is calculated, and calculates the vertical gray scale difference of each unit.
When the horizontal gray scale difference of loaded value calculating part 435 in each unit is bigger than standard level gray scale, the pixel data loaded value is increased by 1, when the vertical gray scale difference of each unit is bigger than standard vertical gray scale difference, line data load value is increased by 1, calculate the pixel data loaded value sum and the line data load value sum of a frame then, thereby calculate all data load values.
＜acutance raising portion 〉
At this moment, when acutance raising portion 440 data load are big, reduce acutance raising amount, data load hour, increase sharpness raising degree.
Acutance raising of the present invention portion utilizes the mask coefficient, improves acutance, still, can be applicable to that also other improve the method for acutancees.
＜halftoning is whole 〉
The whole 450 pairs of picture signals that improve acutance of halftoning are carried out semitone adjustment operation.
＜subregion mapping portion 〉
460 pairs of picture signals through the semitone adjustment process of subregion mapping portion are carried out the subregion mapping.
＜data ordering portion 〉
470 pairs of picture signals through the subregion mapping of data ordering portion rearrange according to all subregion, and are applied in the X electrode drive portion.
As mentioned above, the Drive And Its Driving Method of plasma panel of the present invention can decide acutance raising amount according to data load, and according to the acutance raising amount that is determined, use only mask coefficient table in the plural mask coefficient table, thereby can prevent the excessive increase of data driver IC load, and can improve acutance.
By above-mentioned description, relevant speciality personnel can carry out various change and modification fully in the scope that does not depart from the technology of the present invention thought.Therefore, technical scope of the present invention is not confined to description, must determine its technical scope according to the claim scope.
Claims (6)
1, a kind of drive unit of plasma panel, it is used for received image signal and carries out Flame Image Process, the drive unit of described plasma panel, its feature comprises:
The data load calculating part with on vertical and horizontal direction and the gray scale difference between the unit of discrete cell adjacency, compares discrete cell with the standard grayscale extent of having set, the data load of whole unit is calculated;
Acutance raising portion, this acutance raising portion and above-mentioned data load determine acutance raising amount inversely, and select the mask coefficient table corresponding to the acutance raising amount that is determined from plural mask coefficient table, thereby improve the acutance process.
2, the drive unit of plasma panel according to claim 1 is characterized in that above-mentioned data load calculating part comprises:
Horizontal gray scale difference calculating part, to the gray scale of the m unit on the 1st line and poor with the gray scale of the unit of above-mentioned m cell abutment in the horizontal direction, promptly horizontal gray scale difference calculates, and calculates the horizontal gray scale difference of each unit;
Vertical gray scale difference calculating part, poor to the gray scale of the gray scale of the m unit on the 1st line and the m unit on the 1+1 line, promptly vertical gray scale difference calculates, and calculates the vertical gray scale difference of each unit;
The loaded value calculating part, when the horizontal gray scale difference of each unit is bigger than standard level gray scale, increase the pixel data loaded value, and when the vertical gray scale difference of each unit is bigger than standard vertical gray scale difference, increase line data load value, obtain pixel data loaded value sum and line data load value sum then, thereby calculate above-mentioned data load value.
3, as the drive unit of plasma panel as described in the claim 2, it is characterized in that:
Above-mentioned loaded value calculating part is obtained the pixel data loaded value sum and the line data load value sum of a frame, thereby calculates all data load values.
4, a kind of driving method of plasma panel is used for received image signal and carries out the plasma panel of Flame Image Process, and the feature of the driving method of described plasma panel comprises:
With the gray scale of discrete cell with on vertical and the horizontal direction and the gray scale difference between the gray scale of the unit of discrete cell adjacency, compare the step that the data load of whole unit is calculated with the standard grayscale extent of having set;
Determine the step of acutance raising amount inversely with above-mentioned data load;
From plural mask coefficient table, select step corresponding to the mask coefficient table of the acutance raising amount of above-mentioned decision; And
According to above-mentioned selected mask coefficient table, improve the step of acutance.
5, as the driving method of plasma panel as described in the claim 4, it is characterized in that the step that above-mentioned data load is calculated also comprises:
To the gray scale of the m unit on the 1st line and poor with the gray scale of the unit of above-mentioned m cell abutment in the horizontal direction, promptly horizontal gray scale difference calculates, and calculates the horizontal gray scale difference of each unit;
Poor to the gray scale of the gray scale of the m unit on the 1st line and the m unit on the 1+1 line, promptly vertical gray scale difference calculates, and calculates the vertical gray scale difference of each unit;
When the horizontal gray scale difference of each unit is bigger than standard level gray scale, increase the pixel data loaded value, and when the vertical gray scale difference of each unit is bigger than standard vertical gray scale difference, increase line data load value, obtain pixel data loaded value sum and line data load value sum then, thereby calculate above-mentioned data load value.
6, as the driving method of plasma panel as described in the claim 5, it is characterized in that:
Above-mentioned data load value is calculated by pixel data loaded value sum and the line data load value sum of obtaining a frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100952710A CN100452148C (en) | 2005-11-04 | 2005-11-04 | Set for driving plasma panel, and driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100952710A CN100452148C (en) | 2005-11-04 | 2005-11-04 | Set for driving plasma panel, and driving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1959778A CN1959778A (en) | 2007-05-09 |
| CN100452148C true CN100452148C (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100952710A Expired - Fee Related CN100452148C (en) | 2005-11-04 | 2005-11-04 | Set for driving plasma panel, and driving method |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330355A (en) * | 2000-06-30 | 2002-01-09 | 达碁科技股份有限公司 | Plasma display |
| CN1393840A (en) * | 2001-07-02 | 2003-01-29 | 达碁科技股份有限公司 | AC plasma display panel |
| WO2004019311A2 (en) * | 2002-08-21 | 2004-03-04 | Koninklijke Philips Electronics N.V. | Display device |
-
2005
- 2005-11-04 CN CNB2005100952710A patent/CN100452148C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330355A (en) * | 2000-06-30 | 2002-01-09 | 达碁科技股份有限公司 | Plasma display |
| CN1393840A (en) * | 2001-07-02 | 2003-01-29 | 达碁科技股份有限公司 | AC plasma display panel |
| WO2004019311A2 (en) * | 2002-08-21 | 2004-03-04 | Koninklijke Philips Electronics N.V. | Display device |
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| Publication number | Publication date |
|---|---|
| CN1959778A (en) | 2007-05-09 |
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