CN103021342B - Method for increasing LED display refresh rate - Google Patents
Method for increasing LED display refresh rate Download PDFInfo
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- CN103021342B CN103021342B CN201310002269.9A CN201310002269A CN103021342B CN 103021342 B CN103021342 B CN 103021342B CN 201310002269 A CN201310002269 A CN 201310002269A CN 103021342 B CN103021342 B CN 103021342B
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Abstract
The invention discloses a method for increasing LED display refresh rate. The method includes the steps of according to degree of impact on screen brightness, ranking low P-bits of each display data as unimportant bits and high M-bits as important bits; judging whether each data bit in the display data is important bit or unimportant bit, and storing all the important bits and all the unimportant bits independently; and performing data scanning to unimportant bits and important bits respectively by means of prioritized line scanning and modified grayscale prioritized line scanning. According to the method, the display data is subjected to data bit classification, two types of data bits are scanned by two different scanning modes, high refresh rate of an LED display can be achieved in different service statuses by combination of the two scanning modes, stable image display is achieved, and fine economic benefit is achieved.
Description
Technical field
The present invention relates to LED display technical field, relate more specifically to a kind of method improving LED display refresh rate.
Background technology
Along with the extensive of LED display is popularized, its application scenario gets more and more, more and more higher to the requirement of its outward appearance and performance, and the display screen of extra small dot spacing also becomes more and more common.The display screen of extra small dot spacing, due to the space constraint by pcb board, can not adopt static scanning mode, and be generally that employing 8 is swept or 16 dynamic scan modes swept.For dynamic scan, refresh rate is a very important index, and under same grayscale grade, the display of the higher screen of refresh rate is more stable, more can not produce flickering.But existing LED display is all adopt single scan mode, and the raising of refresh rate exists certain bottleneck.Therefore, how when the number of LED lattice module or pixel unit is constant, the refresh rate improving LED display is one of popular research topic of facing of current LED display industry.
Given this, be necessary to provide a kind of method improving LED display refresh rate to meet the need of market.
Summary of the invention
The object of this invention is to provide a kind of method improving LED display refresh rate to meet the need of market.
To achieve these goals, the technical solution used in the present invention is: provide a kind of method improving LED display refresh rate, it comprises the following steps: according to the influence degree to screen intensity, the low P of each display data is ranked for inessential position, high M ranks for significant bits, wherein the total bit of each display data is T, then T=P+M, 0 < P < T/2; Judge that in display data, each data bit belongs to significant bits or inessential position, and all significant bits and all inessential positions are stored independently of each other; For inessential position, adopt row to sweep priority scan mode and carry out data scanning; For significant bits, the gradation preference scan mode improved is adopted to carry out data scanning.
Preferably, the gradation preference scan mode of described improvement comprises the following steps: each data in significant bits are divided into N part, and wherein, the value of N is the business of weight divided by the weight gained of lowest order in inessential position of lowest order in significant bits; Using each number of every significant bits according to as minimum sweep object, gradation preference scan mode is adopted to carry out data scanning.
Preferably, described gradation preference scan mode is: first order scans all data bit of certain a line, then has swept all row successively in this way.
Preferably, described row is swept priority scan mode and is: first order scans all row of a certain data bit, then has swept all data bit successively in this way.
Compared with prior art, the method of the raising LED display refresh rate provided by the present invention data bit to display data is divided into significant bits and inessential position, and then adopts the gradation preference scan mode improved and row to sweep priority scan mode to scan significant bits and inessential position respectively.Wherein, the refresh rate raising that the scan mode of gradation preference realizes is for full screen pictures, display effect during normal viewing can be improved, it is for a certain position in full screen pictures that row sweeps that refresh rate that preferential scan mode realizes improves, the shooting effect of display screen after camera shooting can be improved, avoid producing flickering.Based on the combination of above-mentioned two kinds of scan modes, LED display can be realized and can reach higher refresh rate in different usage situations, realize stable picture display effect, bring good economic benefit.
By following description also by reference to the accompanying drawings, the present invention will become more clear, and these accompanying drawings are for explaining embodiments of the invention.
Accompanying drawing explanation
Fig. 1 is the block flow diagram that the present invention improves the method for LED display refresh rate.
Fig. 2 is the classification schematic diagram showing data in the method for the LED display refresh rate of raising shown in Fig. 1.
Fig. 3 is the scanning process process flow diagram for significant bits in the method for the LED display refresh rate of raising shown in Fig. 1.
The gradation preference scan mode improved in the method for LED display refresh rate and the comparison situation of traditional gray scale scanning mode on refresh rate is improved shown in Fig. 4 exploded view 1.
Fig. 5 is the scanning process process flow diagram for inessential position in the method for the LED display refresh rate of raising shown in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in embodiment, reference numerals similar in accompanying drawing represents similar assembly.Obviously, be only the present invention's part embodiment below by the embodiment of description, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1 to Fig. 5, the method for raising LED display refresh rate provided by the present invention realizes in the following manner:
First, according to the influence degree to screen intensity, each display data be divided into significant bits and inessential position also all significant bits and all inessential positions to be stored independently of each other (step S1) respectively.Particularly, be rank the low P in display data for inessential position, high M ranks for significant bits.Suppose that the total bit of each display data is T, then T=P+M, wherein the span of P is 0 < P < T/2, to guarantee to have an inessential position at least and the quantity of inessential position is not more than the quantity of significant bits.According to the difference of LED display display performance, the total bit of display data is different, and it is corresponding with the number of greyscale levels of display screen, and such as, for the display screen of 12 grades of gray scales, its display data total bit is 12.Wherein, the impact of significant bits on screen intensity is larger, inessential position is less for the impact of screen intensity, in the span 0 < P < 2/T of P, determination for inessential bit quantity P value and significant bits quantity M value can be selected according to concrete display demand, and such as, the present embodiment is with T=12, M=10, P=2 are that example is described.
When classification is divided in advance to display data, need first to judge that in display data, each belongs to significant bits or inessential position, with by its respectively classified and stored get up (as shown in Figure 2), when carrying out this and judging by judging whether the figure place showing data is less than P, if be less than P, be inessential position, otherwise be significant bits.And then adopt different scan modes to show significant bits and inessential position respectively.Wherein, for inessential bit data, row is adopted to sweep priority scan mode (step S2), for significant bits data, adopt the gradation preference scan mode (step S3) improved, it should be noted that, step S2 herein and S3 there is no the restriction of sequencing, scanning for significant bits and inessential position can adopt serial mode or parallel mode, and also namely the scanning of significant bits can be carried out with the scanning of inessential position simultaneously, also can carry out successively with the scanning of inessential position.Its specific implementation process is as described below.
With reference to Fig. 3, for the gradation preference scan mode of routine, sweep for 12 grades of gray scales and 8, be described as follows: every frame time is divided into several sections by sweep trace, such as 8 modes of sweeping then are divided into 8 sections, one line of every section of time interscan screen, arranged according to the weight proportion 1:2:4:8:16:32:64:128:256:512:1024:2048 of 12 bit data the lighting time of LED in every period.All gray scales swept successively in every line sweep process, and then scanned next line, its general process is as follows: the 1st grade of gray scale of order scanning l line to n-th grade, such as the 12nd grade, gray scale; 1st grade of gray scale of order scanning the 2nd line is to n-th grade of gray scale; 1st grade of gray scale of order scanning S line is to n-th grade of gray scale; By that analogy until institute is wiredly completed by scanning.Sweep situation for 8 herein, scan the 9th line, the 17th line etc. when scanning the 1st line simultaneously.
Based on above-mentioned conventional gradation preference scan mode, the present embodiment adopts the gradation preference scan mode improved to scan significant bits, and concrete mode is as follows:
Each data in significant bits are divided into N part, and wherein, the value of N is the business of weight divided by the weight gained of lowest order in inessential position of lowest order in significant bits.Such as, work as T=12, when M=10, P=2, in this scale-of-two display data, from the number of the right, the 0th, the 1st be low 2, also i.e. inessential position, and from the number of the right 2nd ~ 11 be high 10, be also significant bits.Wherein, in significant bits, lowest order is the 2nd of total bit, and its weight is 2
2=4, and in inessential position, lowest order is the 0th of total bit, its weight is 2
0=1, so now the value of N is 4, is also divided into 4 parts by each the display data in significant bits.
After each display data in significant bits are segmented, be basic sweep object with the every portion in its every, the gradation preference scan mode of above-mentioned routine is adopted to scan, until whole row of this number certificate have been shown, then next number certificate of scanning display is started, until whole frame data have shown.
With reference to Fig. 4, which show the comparison situation of gradation preference scan mode and the traditional gray scale scanning mode improved in the present invention.As shown in Figure 4, its first curve map illustrates the process by traditional gradation preference scan mode process for the data bit of the 10th, 11 and 12 3 in significant bits, second curve map is that in the 10th, 11 and 12 3 data bit, each data bit is divided into the schematic diagram after N part (being 4 parts herein), last curve map then illustrates the gradation preference scan mode of improvement, and the data after being also namely divided are again with the process of gray scale scanning mode process.In the figure, traditional approach needs all data scannings of significant bits to complete just to carry out line feed action, then line feed action can be carried out after adopting the mode after improving only a data scanning of significant bits need be completed, due to by certain number of each of significant bits according to after the scanning of whole sweep trace, be exactly visually the complete picture of a frame, the refresh rate of such significant bits is compared the refresh rate that conventional grey priority scan mode realizes and is improve N doubly.
With reference to Fig. 5, for inessential position, adopt row to sweep priority scan mode and it is scanned.The specific implementation process of this scan mode is still described as follows for 12 grades of gray scales:
Every frame time is divided into 12 sections according to gray shade scale, will scans a screen in each time period, the time span of each section arranges according to the weight proportion 1:2:4:8:16:32:64:128:256:512:1024:2048 of 12 bit data.To show the data of certain grade of gray scale, only needing to light LED within the corresponding time period, as the 180th grade of gray scale can light LED in the 3rd, 5,6 and 8 time periods, stable band gray level image after continuous sweep, can be obtained.Such as, be n for a gray level, line number is the screen of S, scans in the following manner: the 1st line of order scanning the 1st grade of gray level is to S line; 1st line of order scanning the 2nd grade of gray level is to S line; By that analogy until order has scanned the 1st line of n-th grade of gray scale to S line.As above first complete all of a certain gray scale and sweep row, then can improve refresh rate with this scan mode of having swept all gray scales successively, inessential data bits is P, then the refresh rate of inessential position can improve P doubly.
As mentioned above, the method of the raising LED display refresh rate provided by the present invention data bit to display data is divided into significant bits and inessential position, and then adopts the gradation preference scan mode improved and row to sweep priority scan mode to scan significant bits and inessential position respectively.Wherein, the refresh rate raising that the scan mode of gradation preference realizes is for full screen pictures, display effect during normal viewing can be improved, it is for a certain position in full screen pictures that row sweeps that refresh rate that preferential scan mode realizes improves, the shooting effect of display screen after camera shooting can be improved, avoid producing flickering.Based on the combination of above-mentioned two kinds of scan modes, LED display can be realized and can reach higher refresh rate in different usage situations, realize stable picture display effect, bring good economic benefit.
More than in conjunction with most preferred embodiment, invention has been described, but the present invention is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present invention amendment, equivalent combinations.
Claims (3)
1. improve a method for LED display refresh rate, it is characterized in that, comprise the following steps:
According to the influence degree to screen intensity, ranked by the low P of each display data for inessential position, high M ranks for significant bits, and wherein the total bit of each display data is T, then T=P+M, 0 < P < T/2;
Judge that in display data, each data bit belongs to significant bits or inessential position, and all significant bits and all inessential positions are stored independently of each other;
For inessential position, adopt row to sweep priority scan mode and carry out data scanning;
For significant bits, the gradation preference scan mode improved is adopted to carry out data scanning;
Wherein, the gradation preference scan mode of described improvement comprises the following steps:
Each data in significant bits are divided into N part, and wherein, the value of N is the business of weight divided by the weight gained of lowest order in inessential position of lowest order in significant bits;
Using each number of every significant bits according to as sweep object, gradation preference scan mode is adopted to carry out data scanning.
2. the method improving LED display refresh rate as claimed in claim 1, it is characterized in that, described gradation preference scan mode is: first order scans all data bit of certain a line, then has swept all row successively in this way.
3. the method for the raising LED display refresh rate as described in any one of claim 1-2, is characterized in that, described row is swept priority scan mode and is: first order scans all row of a certain data bit, then has swept all data bit successively in this way.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310002269.9A CN103021342B (en) | 2013-01-05 | 2013-01-05 | Method for increasing LED display refresh rate |
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| CN201310002269.9A CN103021342B (en) | 2013-01-05 | 2013-01-05 | Method for increasing LED display refresh rate |
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| CN103021342B true CN103021342B (en) | 2015-07-15 |
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| CN113205767B (en) * | 2021-04-29 | 2022-11-01 | 北京集创北方科技股份有限公司 | Data access adjustment method, display drive chip, electronic device, and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5898414A (en) * | 1997-01-20 | 1999-04-27 | Fujitsu Limited | Display method for intermediate gray scale and display apparatus for expressing intermediate gray scale |
| CN101515445A (en) * | 2009-03-26 | 2009-08-26 | 上海大学 | Display drive method of liquid crystal display of thin film transistor |
| CN102354482A (en) * | 2011-11-07 | 2012-02-15 | 杭州士兰控股有限公司 | LED (light-emitting diode) display system and display method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1124628A (en) * | 1997-07-07 | 1999-01-29 | Matsushita Electric Ind Co Ltd | Gradation display method for plasma display panel |
| KR101840796B1 (en) * | 2011-02-08 | 2018-03-22 | 삼성디스플레이 주식회사 | Gamma control mapping circuit and method, and organic emmiting display device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5898414A (en) * | 1997-01-20 | 1999-04-27 | Fujitsu Limited | Display method for intermediate gray scale and display apparatus for expressing intermediate gray scale |
| CN101515445A (en) * | 2009-03-26 | 2009-08-26 | 上海大学 | Display drive method of liquid crystal display of thin film transistor |
| CN102354482A (en) * | 2011-11-07 | 2012-02-15 | 杭州士兰控股有限公司 | LED (light-emitting diode) display system and display method |
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Granted publication date: 20150715 Termination date: 20180105 |