CN1670799A - A processing method for improving AC PDP image quality - Google Patents
A processing method for improving AC PDP image quality Download PDFInfo
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- CN1670799A CN1670799A CNA2005100419675A CN200510041967A CN1670799A CN 1670799 A CN1670799 A CN 1670799A CN A2005100419675 A CNA2005100419675 A CN A2005100419675A CN 200510041967 A CN200510041967 A CN 200510041967A CN 1670799 A CN1670799 A CN 1670799A
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Abstract
This invention relates to AC PDP image quality process method, which comprises the following steps: through the devices of comparer, original data memory, sub-field data memory, adder, lookup meter, multiplier, and abstracter to compare, look up, multiply, abstract in the order of sizes; then choosing to output and to process the data on the same method. The invention judges the real gray parameters in each sub filed through displaying each sub field picture element statistics.
Description
Technical field
The present invention relates to a kind of disposal route of picture quality, relate in particular to a kind of disposal route of the AC of raising PDP picture quality.
Background technology
AC PDP is that the ultraviolet ray bombardment RGB three-color phosphor that produces when adopting gas discharge is carried out the image demonstration.The display screen of AC PDP comprises prebasal plate and metacoxal plate, the parallel right electrode (be called scan electrode and keep electrode, can be referred to as show electrode) that is scattered on the prebasal plate, and metacoxal plate is distributing and the scan electrode addressing electrode vertical with keeping electrode.When display image, process roughly can be divided into following three processes: preparatory stage, address period and keep the phase.Preparatory stage is that the full-screen pixels unit is discharged, and makes it to reach state consistency and produces certain space ion concentration; Address period then is by the view data decision, whether produces discharge between addressing electrode on the metacoxal plate and the scan electrode on the prebasal plate, and the pixel cell that show produces discharge, and the unit that does not need to show then need not discharge; The phase of keeping then is to apply certain demonstration pulse at scan electrode on the electrode with keeping, the pixel cell that address period produces discharge can continue Discharge illuminating, the pixel cell that address period does not produce Discharge illuminating then can not Discharge illuminating, comes the demonstration of control chart as pixel cell like this.
AC PDP adopts the display mode of son field to realize many grades gray scale of image.Usually a two field picture being divided into a plurality of sons field realizes, different son fields have different weights, the son field of different weights can realize that by sub combination to different weights many grades gray scale of image shows corresponding to different luminance weights (corresponding in the circuit realization promptly is to keep the Discharge illuminating number of times when keeping the phase).
But adopt the device of above-mentioned electrode structure, carrying out to produce following image fault when image shows: when image shows a certain son field, carry out luminous pixel cell number difference owing to need to produce discharge in every row, the electric current that then flows through on show electrode is just variant, so pressure drop on show electrode just different (causing) by electrode resistance, so, just different at every pair of scan electrode of different rows and the voltage difference kept between the electrode, different voltage differences has just caused the strong and weak difference of discharge, shows on the image it promptly is to produce difference between the image intrinsic brilliance that produces and the desirable brightness.Owing to above reason, though on every pair of show electrode of every row, applied identical display waveform, but because every display line carries out Discharge illuminating number of unit difference, just different in the scanning on every pair of show electrode so with voltage difference on keeping electrode, final image intrinsic brilliance and the desirable brightness that produces is inconsistent, caused image fault, the image fault that is caused by above description reason at any time all can exist, and the electrode structure that adopts is different with electrode material, its electrode resistance is just different, pressure drop is just different so, and the degree of the image fault that finally causes is just different.
Summary of the invention
Cause the problem of image fault in order to solve because of electrode resistance causes electrode drop, the disposal route that the purpose of this invention is to provide a kind of AC of raising PDP picture quality, this method causes the image fault that electrode drop causes by image display information is handled to overcome because of electrode resistance to data.
The technical solution adopted in the present invention is, a kind of disposal route that improves AC PDP picture quality, this method is handled all pixel datas of every row by the device that contains comparer, raw storage, sub-field data storer, totalizer, look-up table, multiplier and subtracter, the actual grey that data after feasible the processing can show is consistent with the desirable gray scale that raw data will show, and this method comprises the steps:
At first, the son n to a pixel weight limit value of delegation handles:
1) set desirable levels gray-scale value B, and be sent to comparer and raw storage is stored, should child field weighted value K
nBe sent to comparer and multiplier;
2) in comparer, with desirable levels gray-scale value B and this child field weighted value K that receives
nCompare, if B 〉=K
nFor being then to obtain coefficient C
n=1, if B 〉=K
nFor not, then obtain coefficient C
n=0, try to achieve the coefficient C of each pixel in the delegation with the method
n, and with each coefficient C
nBe sent to totalizer and sub-field data storer is stored;
3) in totalizer, to the coefficient C of all pixels in this delegation
nCarry out addition, obtain the number of pixel cells purpose count results N that will light when this child field shows
n, and with count results N
nBe sent to look-up table;
4) in look-up table, according to count results N
nJudge the ratio of this row actual grey and maximum gray scale when showing the book field, i.e. actual grey coefficient L (N
n), and with actual grey coefficient L (N
n) be sent to multiplier;
5) sub-field data storer is with coefficient C
nBe sent to multiplier, in multiplier, carry out actual grey coefficient L (N
n) and this child field weighted value K
nWith coefficient C
nMultiply each other, obtain the actual grey value, and be sent to subtracter;
6) raw storage is the desirable levels gray-scale value B input subtracter of storage, and subtracts each other with the actual grey value that receives in subtracter, obtains remaining not showing the gray-level value B that will realize in sub-place
N-1, and with its result's output, according to coefficient C
n, as coefficient C
n=1 o'clock, output do not show the grade gray-scale value B that will realize in sub-place for residue
N-1, luminous demonstration is carried out in expression book field, as coefficient C
n=0 o'clock, output be desirable levels gray-scale value B, luminous demonstration is not carried out in expression book field, simultaneously, coefficient C
nVideo data as the book field;
Then, a son n-1 who one pixel of delegation is taken second place than the weight limit value according to said method handles:
1) will go up a son residue that obtains and not show the grade gray-scale value B that will realize in sub-place
N-1Be sent to comparer and raw storage is stored, should child field weighted value K
N-1Be sent to comparer and multiplier;
2) in comparer, with the grade gray-scale value B that receives
N-1With this child field weighted value K
N-1Compare, if B
N-1〉=K
N-1For being then to obtain coefficient C
N-1=1, if B
N-1〉=K
N-1For not, then obtain coefficient C
N-1=0, try to achieve the coefficient C of each pixel in the delegation with the method
N-1, and with each coefficient C
N-1Be sent to totalizer and sub-field data storer is stored;
3) in totalizer, to the coefficient C of all pixels in this delegation
N-1Carry out addition, obtain the number of pixel cells purpose count results N that will light when this child field shows
N-1, and with count results N
N-1Be sent to look-up table;
4) in look-up table, according to count results N
N-1Judge the ratio of this row actual grey and maximum gray scale when showing the book field, i.e. actual grey coefficient L (N
N-1), and with actual grey coefficient L (N
N-1) be sent to multiplier;
5) sub-field data storer is with coefficient C
N-1Be sent to multiplier, in multiplier, carry out actual grey coefficient L (N
N-1) and this child field weighted value K
N-1With coefficient C
N-1Multiply each other, obtain the actual grey value, and be sent to subtracter;
6) raw storage is with the grade gray-scale value B of storage
N-1Input subtracter, and subtracting each other with the actual grey value that receives in subtracter obtains remaining and does not show the gray-level value B that will realize in sub-place
N-2, and with its result's output, according to coefficient C
N-1, as coefficient C
N-1=1 o'clock, output do not show the gray-level value B that will realize in sub-place for residue
N-2, luminous demonstration is carried out in expression book field, as coefficient C
N-1=0 o'clock, output be grade gray-scale value B
N-1, luminous demonstration is not carried out in expression book field, simultaneously, and coefficient C
N-1Video data as the book field;
The whole son of all pixels on this row is handled the sub-field data that will adopt when obtaining all pixel actual displayed on this row according to above method according to weighted value order from big to small;
At last, the pixel of all row is carried out data processing with above method, the sub-field data that will adopt when obtaining all pixel actual displayed of this two field picture.
Characteristics of the present invention are that also n+1 the weight relationship with n field should satisfy:
Wherein: K refers to the weight ratio of sub of n+1 field and n;
The ratio of actual grey and this row coideal gray scale when X refers to that all pixel cells are lighted on the display line;
K
nThe weighted value that refers to n son field.
Another characteristics of the present invention also are, when son was arranged, the gray shade scale that can realize should be not less than Y/X, and wherein, Y is a maximum desired grade gray scale, the ratio of actual grey and this row coideal gray scale when X refers to that all pixel cells are lighted on the display line.
Because the present invention adds up by each son pixel cell that needs to show to every display line, to judge the actual grey coefficient that when showing each son field, can realize, and then calculate the residue gray scale that will realize, with this all son fields are handled, make that the expressed desirable gray scale of final actual grey that pixel cell on every display line can realize and raw data is consistent, realized overcoming because of image fault that the electrode resistance pressure drop causes, improved the purpose of image displaying quality.
Description of drawings
Fig. 1 represents to handle a certain sub workflow block diagram of certain a certain pixel of delegation;
Fig. 2 represents to handle the process flow diagram of all son fields of a certain data in certain delegation.
Among the figure, 1. comparer, 2. raw storage, 3. totalizer, 4. sub-field data storer, 5. look-up table, 6. multiplier, 7. subtracter.
Embodiment
In conjunction with the accompanying drawings and embodiments the present invention is described in further detail down.
Image fault is because the caused pressure drop of the electrode resistance on every display line produces, so the number of pixels that the distortion situation of each row is lighted according to each row is inequality, and each row is separate, in addition, AC PDP adopts the display mode of son field to realize many grades gray scale, and when showing, each height field is also separate, so the present invention carries out data processing to the pixel of certain delegation respectively, then be to handle at each sub-field sequence to certain delegation.
As shown in Figure 1, on handling certain delegation during the data of a certain son, by containing the device of comparer 1, raw storage 2, sub-field data storer 4, totalizer 3, look-up table 5, multiplier 6 and subtracter 7, at first, the son n of a pixel weight limit value of delegation is handled:
1) set desirable levels gray-scale value B, and be sent to comparer 1 and raw storage 2 is stored, should child field weighted value K
nBe sent to comparer 1 and multiplier 6;
2) in comparer 1, with desirable levels gray-scale value B and this child field weighted value K that receives
nCompare, if B 〉=K
nFor being then to obtain coefficient C
n=1, if B 〉=K
nFor not, then obtain coefficient C
n=0, try to achieve the coefficient C of each pixel in the delegation with the method
n, and with each coefficient C
nBe sent to totalizer 3 and sub-field data storer 4 is stored;
3) in totalizer 3, to the coefficient C of all pixels in this delegation
nCarry out addition, obtain the number of pixel cells purpose count results N that will light when this child field shows
n, and with count results N
nBe sent to look-up table 5;
4) in look-up table 5, according to count results N
nJudge the ratio of this row actual grey and maximum gray scale when showing the book field, i.e. actual grey coefficient L (N
n), and with actual grey coefficient L (N
n) be sent to multiplier 6;
5) sub-field data storer 4 is with coefficient C
nBe sent to multiplier 6, in multiplier 6, carry out actual grey coefficient L (N
n) and this child field weighted value K
nWith coefficient C
nMultiply each other, obtain the actual grey value, and be sent to subtracter 7;
6) raw storage 2 is the desirable levels gray-scale value B input subtracter 7 of storage, and subtracter 7 in and the actual grey value that receives subtract each other, obtain remaining and do not show the gray-level value B that will realize in sub-place
N-1, and with its result's output, according to coefficient C
n, as coefficient C
n=1 o'clock, output do not show the grade gray-scale value B that will realize in sub-place for residue
N-1, luminous demonstration is carried out in expression book field, as coefficient C
n=0 o'clock, output be desirable levels gray-scale value B, luminous demonstration is not carried out in expression book field, simultaneously, coefficient C
nVideo data as the book field.
Through above processing, when though a certain son field shows, because actual grey and desirable gray scale that electrode drop realized are inconsistent, but when judgement does not show the gray shade scale that need realize in sub-place is to be reference with the actual grey, like this, can guarantee that the actual grey value that is finally realized is consistent with desirable gray-scale value, overcome the image fault that causes owing to the electrode resistance pressure drop on each display line.
Illustrate processing procedure down to whole sons field of the data in certain delegation.
If express the brightness degree gray scale with 8 son fields, a son weight is respectively K from big to small
8: K
7: K
6: K
5: K
4: K
3: K
2: K
1=80: 48: 28: 16: 8: 4: 2: 1, suppose all pixel cells are all lighted, the grade of realizing ideal gray scale B=132; Supposition is when all pixel cells in the delegation are all lighted simultaneously, and its actual grey is 3/4 of a desirable gray scale; Wherein brightness degree B=132 was expressed as before the method that adopts the present invention to propose is handled:
B＝132＝a
8K
8+a
7K
7+a
6K
6+a
5K
5+a
4K
4+a
3K
3+a
2K
2+a
1K
1
＝1*80+1*48+0*28+0*16+0*8+1*4+0*2+0*1
Wherein, B is the desirable levels gray scale, and a is the coefficient of correspondence of a son K, and a=0 or a=1, and K is each son weight.
Processing procedure as shown in Figure 2, at first to the weighted value maximum the 8th the son K
8Handle:
In comparer 1, with desirable levels gray scale B=132 and weighted value K
8=80 compare, because 132＞80, obtain coefficient C
8=1, try to achieve the coefficient C of each pixel in the delegation
8, with each C
8Deliver to and carry out addition in the totalizer 3, obtain count results N after the addition
8, N
8Representing that this delegation needs the pixel cell number of Discharge illuminating in the 8th sub-place, is all pixel cells in this is given an example, then according to count results N
8Obtain the ratio of actual grey and desirable gray scale by look-up table 5, promptly the actual grey coefficient is expressed as L (N
8), because N
8For all the pixel cell numbers in the delegation, so L (N
8) the decay maximum, i.e. L (N
8Actual grey coefficient L (N is carried out in)=3/4 in multiplier 6
8) and weighted value K
8=80 and coefficient C
8Multiply each other, obtain actual grey value C
8* L (N
8) * K
8=1*3/4*80=60 in subtracter 7, deducts the 8th son actual grey=60 of realizing with desirable levels gray scale B=132, just obtains remaining the gray scale B that 7 sub-places will be realized
7=132-60=72.
Then the 7th son field is handled:
In comparer 1, with grade gray scale B
7=72 with weighted value K
7=48 compare, because 72＞48, obtain coefficient C
7=1, try to achieve the coefficient C of each pixel in the delegation
7, with each C
7Deliver to and carry out addition in the totalizer 3, obtain count results N after the addition
7, N
7Represent that this delegation needs the pixel cell number of Discharge illuminating in the 7th sub-place, then according to count results N
7Obtain the ratio of actual grey and desirable gray scale by look-up table 5, promptly the actual grey coefficient is expressed as L (N
7), L (N
8Actual grey coefficient L (N is carried out in)=3/4 in multiplier 6
7) and weighted value K
7=48 and coefficient C
7Multiply each other, obtain actual grey value C
7* L (N
7) * K
7=1*3/4*48=36 is in subtracter 7, with desirable levels gray scale B
7=72 deduct the 7th son actual grey=36 of realizing, just obtain remaining the gray scale B that 6 sub-places will be realized
6=72-36=36.
Same principle is carried out respective handling to the 6th, 5,4,3,2,1 son field successively.
When adopting disposal route of the present invention, because the son field that weight is lighter is lighter to the luminosity influence, actual grey and the error between the desirable gray scale that realizes owing to the electrode resistance pressure drop is just more little so, just more little to the image fault influence, so, simple for the processing of data, can select only to handle the bigger several height field of weight, and the distribution of son field can directly be carried out in the less son field of weight, promptly handles the data of the less several height field of weight according to conventional method.Such as for aforementioned 8 sub-fields, to select only 4 higher son fields of weight to be handled, 4 sub that weight is lower is then directly distributed according to conventional method.
The grade gray scale of handling finally is expressed as:
B′＝C
8K
8+C
7K
7+C
6K
6+C
5K
5+C
4K
4+C
3K
3+C
2K
2+C
1K
1
＝1*80+1*48+1*28+0*16+1*8+1*4+1*2+1*1
＝171
When actual displayed, B ' shows with the grade gray scale, though grade gray scale B '=171, because the gray scale that the electrode resistance pressure drop causes decay, the grade gray scale 132 of actual grey that grade gray scale B ' can realize and the required realization of raw data desirable levels gray scale B reaches unanimity.
In processing procedure of the present invention, when showing, last height field can not completely express desirable brightness owing to the electrode resistance pressure drop, and show the son field as last, there is not the next son field to compensate difference between intrinsic brilliance and the desirable brightness, in order to make this difference minimum (being that the image fault situation is the most weak), should arrange the son field of weight minimum to handle as the last son field that shows.
During according to method deal with data of the present invention, should consider the setting of each height field weight.
Remember that n+1 the weight ratio with n field is K, the weight of n field is K
n, n+1 weight is K
N+1=K*K
nBecause when showing, a different sons desirable gray scale that realize be with its weight one to one, so, can remember that the weight of n is K
nN+1 weight is K
N+1=K*K
n, and when n showed, the pixel cell of certain delegation was all lighted, owing to electrode resistance pressure drop reason, the actual grey coefficient of being realized is X, i.e. the sub-place of the n actual grey grade b that can realize
n=K
n* X.
Suppose that an existing grade gray scale is that the pixel of B shows, and for weight greater than K
nSon processing finish, and B satisfies: K
n≤ B＜K
N+1=K*K
nSo,, need weight less than K if want to realize brightness B
N+1Son field make up and realize.Consider the poorest a kind of situation, suppose B=K
N+1-1=K*K
N+1-1, when n son field showed, if the pixel of corresponding row is all lighted, then the actual grey of being realized only was K
n* X, then shown n son after, it is B-K that brightness to be achieved is arranged
n* X=K*K
n-1-K
n* X, this residue brightness needs by weight less than K
nThe son combination realize, should satisfy: K*K
n-1-K
n* X＜K
n, abbreviation then has:
This formula is the relation that adjacent each son weight will satisfy when adopting this method.
What should consider is that what grade gray scale the son field that is provided with should realize again, because the actual grey that every sub-place can be realized minimum is K
n* X is Y in order to realize the highest ranking gray scale, and so, the grade gray scale that all sub-field energys enough realize just should be Y/X, like this, under the situation of electrode drop maximum, realizes brightness degree Y even could guarantee when the demonstration of every son field.
Claims (3)
1. disposal route that improves AC PDP picture quality, this method is handled all pixel datas of every row by the device that contains comparer, raw storage, sub-field data storer, totalizer, look-up table, multiplier and subtracter, the actual grey that data after feasible the processing can show is consistent with the desirable gray scale that raw data will show, it is characterized in that this method comprises the steps:
At first, the son n to a pixel weight limit value of delegation handles:
1) set desirable levels gray-scale value B, and be sent to comparer and raw storage is stored, should child field weighted value K
nBe sent to comparer and multiplier;
2) in comparer, with desirable levels gray-scale value B and this child field weighted value K that receives
nCompare, if B 〉=K
nFor being then to obtain coefficient C
n=1, if B 〉=K
nFor not, then obtain coefficient C
n=0, try to achieve the coefficient C of each pixel in the delegation with the method
n, and with each coefficient C
nBe sent to totalizer and sub-field data storer is stored;
3) in totalizer, to the coefficient C of all pixels in this delegation
nCarry out addition, obtain the number of pixel cells purpose count results N that will light when this child field shows
n, and with count results N
nBe sent to look-up table;
4) in look-up table, according to count results N
nJudge the ratio of this row actual grey and maximum gray scale when showing the book field, i.e. actual grey coefficient L (N
n), and with actual grey coefficient L (N
n) be sent to multiplier;
5) sub-field data storer is with coefficient C
nBe sent to multiplier, in multiplier, carry out actual grey coefficient L (N
n) and this child field weighted value K
nWith coefficient C
nMultiply each other, obtain the actual grey value, and be sent to subtracter;
6) raw storage is the desirable levels gray-scale value B input subtracter of storage, and subtracts each other with the actual grey value that receives in subtracter, obtains remaining not showing the gray-level value B that will realize in sub-place
N-1, and with its result's output, according to coefficient C
n, as coefficient C
n=1 o'clock, output do not show the grade gray-scale value B that will realize in sub-place for residue
N-1, luminous demonstration is carried out in expression book field, as coefficient C
n=0 o'clock, output be desirable levels gray-scale value B, luminous demonstration is not carried out in expression book field, simultaneously, coefficient C
nVideo data as the book field;
Then, a son n-1 who one pixel of delegation is taken second place than the weight limit value according to said method handles:
1) will go up a son residue that obtains and not show the grade gray-scale value B that will realize in sub-place
N-1Be sent to comparer and raw storage is stored, should child field weighted value K
N-1Be sent to comparer and multiplier;
2) in comparer, with the grade gray-scale value B that receives
N-1With this child field weighted value K
N-1Compare, if B
N-1〉=K
N-1For being then to obtain coefficient C
N-1=1, if B
N-1〉=K
N-1For not, then obtain coefficient C
N-1=0, try to achieve the coefficient C of each pixel in the delegation with the method
N-1, and with each coefficient C
N-1Be sent to totalizer and sub-field data storer is stored;
3) in totalizer, to the coefficient C of all pixels in this delegation
N-1Carry out addition, obtain the number of pixel cells purpose count results N that will light when this child field shows
N-1, and with count results N
N-1Be sent to look-up table;
4) in look-up table, according to count results N
N-1Judge the ratio of this row actual grey and maximum gray scale when showing the book field, i.e. actual grey coefficient L (N
N-1), and with actual grey coefficient L (N
N-1) be sent to multiplier;
5) sub-field data storer is with coefficient C
N-1Be sent to multiplier, in multiplier, carry out actual grey coefficient L (N
N-1) and this child field weighted value K
N-1With coefficient C
N-1Multiply each other, obtain the actual grey value, and be sent to subtracter;
6) raw storage is with the grade gray-scale value B of storage
N-1Input subtracter, and subtracting each other with the actual grey value that receives in subtracter obtains remaining and does not show the gray-level value B that will realize in sub-place
N-2, and with its result's output, according to coefficient C
N-1, as coefficient C
N-1=1 o'clock, output do not show the gray-level value B that will realize in sub-place for residue
N-2, luminous demonstration is carried out in expression book field, as coefficient C
N-1=0 o'clock, output be grade gray-scale value B
N-1, luminous demonstration is not carried out in expression book field, simultaneously, and coefficient C
N-1Video data as the book field;
The whole son of all pixels on this row is handled the sub-field data that will adopt when obtaining all pixel actual displayed on this row according to above method according to weighted value order from big to small;
At last, the pixel of all row is carried out data processing with above method, the sub-field data that will adopt when obtaining all pixel actual displayed of this two field picture.
2. disposal route according to claim 1 is characterized in that, n+1 the weight relationship with n field should satisfy:
Wherein: K refers to the weight ratio of sub of n+1 field and n;
The ratio of actual grey and this row coideal gray scale when X refers to that all pixel cells are lighted on the display line;
K
nThe weighted value that refers to n son field.
3. disposal route according to claim 1 is characterized in that, when arrange the son field, the gray shade scale that can realize should be not less than Y/X, wherein, Y is a maximum desired grade gray scale, the ratio of actual grey and this row coideal gray scale when X refers to that all pixel cells are lighted on the display line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100419675A CN1670799A (en) | 2005-04-18 | 2005-04-18 | A processing method for improving AC PDP image quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100419675A CN1670799A (en) | 2005-04-18 | 2005-04-18 | A processing method for improving AC PDP image quality |
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| Publication Number | Publication Date |
|---|---|
| CN1670799A true CN1670799A (en) | 2005-09-21 |
Family
ID=35042037
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|---|---|---|---|
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| CN (1) | CN1670799A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937712A (en) * | 2005-09-22 | 2007-03-28 | 汤姆森许可贸易公司 | Method and device for encoding luminance values into subfield code words in a display device |
| CN100380421C (en) * | 2005-10-14 | 2008-04-09 | 四川世纪双虹显示器件有限公司 | Driving method for increasing brightness of AC PDP image |
-
2005
- 2005-04-18 CN CNA2005100419675A patent/CN1670799A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937712A (en) * | 2005-09-22 | 2007-03-28 | 汤姆森许可贸易公司 | Method and device for encoding luminance values into subfield code words in a display device |
| US7804509B2 (en) | 2005-09-22 | 2010-09-28 | Thomson Licensing | Method and device for encoding luminance values into subfield code words in a display device |
| CN1937712B (en) * | 2005-09-22 | 2013-09-25 | 汤姆森许可贸易公司 | Method and device for encoding luminance values into subfield code words in a display device |
| CN100380421C (en) * | 2005-10-14 | 2008-04-09 | 四川世纪双虹显示器件有限公司 | Driving method for increasing brightness of AC PDP image |
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