CN103218969A - Image displaying method, driving device and displaying system - Google Patents
Image displaying method, driving device and displaying system Download PDFInfo
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- CN103218969A CN103218969A CN2013100792824A CN201310079282A CN103218969A CN 103218969 A CN103218969 A CN 103218969A CN 2013100792824 A CN2013100792824 A CN 2013100792824A CN 201310079282 A CN201310079282 A CN 201310079282A CN 103218969 A CN103218969 A CN 103218969A
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Abstract
The invention discloses an image displaying method, a driving device and a displaying system. The method comprises the steps of alternately reading frame original images from at least two storage regions according to frame original image displaying sequences and enabling the frame original images to serve as a front frame original image and a next frame original image respectively; working out frequency doubling numbers, needing frequency doubling processing, of the frame original images according to predetermined rules; and conducting frequency doubling processing on the front frame original image, at least obtaining a plurality of complete front frame frequency doubling images and one incomplete front frame frequency doubling image, conducting frequency doubling processing on the next frame original image, at least obtaining a plurality of complete next frame frequency doubling images and one incomplete next frame frequency doubling image, and enabling a total frequency doubling number of all front frame frequency doubling images and all next frame frequency doubling images to be equal to a total frequency doubling number of the front frame original image and the next frame original image. By means of the mode, the problems of black strips and water ripples are solved, luminance utilization rate is improved, and energy consumption is reduced.
Description
Technical field
The present invention relates to LED display device technology field, particularly relate to a kind of method for displaying image, drive unit and display system.
Background technology
Display device principles such as image playing principles and liquid crystal are identical, and according to the vision of human eye, per second needs the multiple image demonstration that finishes playing continuously, just feel the continuity that image is play, otherwise screen can glimmer.
In display, arranged between frame and the frame break time, use modes backlight such as CCFL because of display lighting, even if this section period does not have new data, the liquid crystal deflecting element angle remains unchanged, image still continues to show.And the color of LED display and brightness are showed by LED fully switching time, if close LED, then screen can display image, is in black state.Display per second image transmitted image 60 frames, but in LED display, all can carry out frequency multiplication and show, be example with 4 frequencys multiplication, computer transmits a two field picture, shows that on LED display this two field picture can show 4 frames.As shown in Figure 1 and Figure 2, the former frame image represents that with A back one two field picture is represented with B.
Behind the intact 4 two field picture A1～A4 of former frame image A frequency multiplication, usually the frequency multiplication image B 1 of a back two field picture B of computer does not also arrive, if with former frame image A frequency multiplication 1 time again, and the frequency multiplication image B 1 of a two field picture B arrives already behind the computer, if therefore in 4 times of frequency multiplication, do not stop between A1～A4, as shown in Figure 1, long stand-by period (stand-by period is seen dash area) was then arranged before the frequency multiplication image B 1 of back one two field picture B, secret note and water ripple phenomenon can occur when using camera to take.
For addressing the above problem, the common way of prior art is: as shown in Figure 2, with total stand-by period uniform distribution in every frame, as A1～A2, A2～A3, A3～A4, A4～B1, between the such frame and frame of B1～B2, B2～B3, B3～B4, the residence time (residence time is seen dash area) can be shorter relatively, when using camera to take, just tangible water ripple phenomenon can not occur.
Yet, after handling in the manner described above, though between frame and the frame residence time very short, LED will be in closed condition this section residence time, have following problem to occur:
1. brightness utilization factor descends, and as certain point of a two field picture, all is the brightest in 60 continuous frames, and brightness value is assumed to 255, but changes the interval time that frame brings because of occurring, and has then only shown 900 milliseconds in 1 second, and the luminance loss is 10%.
2. electric current is big, and power consumption is big, reaches some intensity levels as need, and the whole LED display screen will lose more electric energy.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of method for displaying image, drive unit and display system, can solve secret note and ripples line problem, improves the brightness utilization factor, reduces energy consumption.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the method that provides a kind of image to show, comprise the steps: that the original image DISPLAY ORDER alternately reads the frame original image successively from least two storage areas frame by frame, respectively as former frame original image and back one frame original image; Calculate the frequency that frame original image needs carry out process of frequency multiplication according to pre-defined rule; The former frame original image is carried out process of frequency multiplication, at least obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness, and to the back one frame original image carry out process of frequency multiplication, at least obtain a plurality of complete back frame frequency multiplication images and a back frame frequency multiplication image of an incompleteness, wherein, all former frame frequency multiplication images and all total frequency of back one frame frequency multiplication image equal the frequency sum of former frame original image and back one frame original image.
Wherein, calculating according to pre-defined rule among the step of frequency that frame original image needs carry out process of frequency multiplication, comprising: obtain the demonstration time of a frame original image in the unit interval; Obtain the correlation parameter of LED display, wherein, correlation parameter comprises the demonstration number of fields of shift clock frequency, pixel sweep frequency, pixel number and a frame original image of LED display; Calculate frequency according to following formula:
Wherein, x is a frequency, and t is the demonstration time of a frame original image in the unit interval, and f is the shift clock frequency of LED display, and s is the pixel sweep frequency of LED display, and d is the pixel number of LED display, and n is the demonstration number of fields of a two field picture.
Wherein, the former frame original image is being carried out process of frequency multiplication, at least obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness, and to the back one frame original image carry out process of frequency multiplication, at least obtain among the step of a back frame frequency multiplication image of a plurality of complete back frame frequency multiplication images and an incompleteness, comprise: from frequency X, extract round values a and fractional value b, wherein, X=a+b; According to round values a former frame original image and back one frame original image are carried out process of frequency multiplication, obtain a complete former frame frequency multiplication image and an a complete back frame frequency multiplication image respectively; According to fractional value b former frame original image and back one frame original image are carried out extra process of frequency multiplication, obtain a former frame frequency multiplication image and a back frame frequency multiplication image that accounts for the incompleteness of back one frame original image b * 100% that accounts for the incompleteness of former frame original image b * 100% respectively, wherein, Can Que former frame frequency multiplication image, an incomplete back frame frequency multiplication image correspond to the part of former frame original image, the preceding b of back one frame original image * 100% respectively.
Wherein, the former frame original image is being carried out process of frequency multiplication, at least obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness, and to the back one frame original image carry out process of frequency multiplication, at least obtain among the step of a back frame frequency multiplication image of a plurality of complete back frame frequency multiplication images and an incompleteness, the former frame original image is being carried out process of frequency multiplication, after start frame original image frequency multiplication, obtain including only the start frame frequency multiplication image of a plurality of complete start frame frequency multiplication images and an incompleteness, obtain comprising a frame frequency multiplication image of filling a vacancy after all the other two field picture frequencys multiplication, the a plurality of complete frame frequency multiplication images and the frame frequency multiplication image of an incompleteness, comprise the steps: that (1) extracts round values a and fractional value b from frequency X, wherein, X=a+b; (2) the start frame original image is carried out process of frequency multiplication, only comprised a complete start frame frequency multiplication image and the start frame frequency multiplication image that accounts for the incompleteness of start frame original image b * 100%, wherein, Can Que former frame frequency multiplication image corresponds to the part of the preceding b of start frame original image * 100%; (3) back one frame original image is carried out process of frequency multiplication, obtain accounting for a back frame frequency multiplication image of filling a vacancy of back one frame frame original image (1-b) * 100%, wherein, a back frame frequency multiplication image of filling a vacancy corresponds to the part of back one frame original image after b * 100%; (4) number percent of a back frame frequency multiplication image of a complete back frame frequency multiplication image number that obtains after the one frame original image frequency multiplication of calculating back and incompleteness, wherein, total frequency of a back frame frequency multiplication image of a complete back frame frequency multiplication image and incompleteness is Y, Y=X-(1-b)=a+2b-1, extract round values c and the fractional value d of total frequency Y, a+2b-1=c+d, frequency multiplication obtains a c complete back frame frequency multiplication image and accounts for a back frame frequency multiplication image of the incompleteness of back one frame original image d * 100%, and a back frame frequency multiplication image of filling a vacancy corresponds to the part of back one frame original image before d * 100%; (5) repeat above-mentioned steps (3)-(4).
Wherein, fractional value b is 0.5 among the frequency X.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of drive unit that image shows that is used for is provided, and comprising: memory module is used for the storage frame original image; Read module is used for frame by frame that the original image DISPLAY ORDER alternately reads the frame original image from least two storage areas successively, respectively as former frame original image and back one frame original image; Computing module is used for calculating the frequency that frame original image needs carry out process of frequency multiplication according to pre-defined rule; The frequency multiplication module, be used for the former frame original image is carried out process of frequency multiplication, at least obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness, and to the back one frame original image carry out process of frequency multiplication, at least obtain a plurality of complete back frame frequency multiplication images and a back frame frequency multiplication image of an incompleteness, wherein, all former frame frequency multiplication images and all total frequency of back one frame frequency multiplication image equal the frequency sum of former frame original image and back one frame original image.
Wherein, computing module comprises first acquiring unit, second acquisition unit and computing unit; First acquiring unit is used to obtain the demonstration time of a frame original image in the unit interval; Second acquisition unit is used to obtain the correlation parameter of LED display, and wherein, correlation parameter comprises the demonstration number of fields of shift clock frequency, pixel sweep frequency, pixel number and a frame original image of LED display; Computing unit is used for calculating frequency according to following formula:
Wherein, x is a frequency, and the demonstration time of frame original image in the unit interval, f is the shift clock frequency of LED display, and s is the pixel sweep frequency of LED display, and d is the pixel number of LED display, and n is the demonstration number of fields of a two field picture.
Wherein, the frequency multiplication module comprises the 3rd acquiring unit and frequency multiplication unit; The 3rd acquiring unit is used for extracting round values a and fractional value b from frequency X, wherein, and X=a+b; The frequency multiplication unit is used for according to round values a former frame original image and back one frame original image being carried out process of frequency multiplication, obtains a complete former frame frequency multiplication image and an a complete back frame frequency multiplication image respectively; And according to fractional value b to the former frame original image and the back one frame original image carry out extra process of frequency multiplication, obtain a former frame frequency multiplication image and a back frame frequency multiplication image that accounts for the incompleteness of back one frame original image b * 100% that accounts for the incompleteness of former frame original image b * 100% respectively, wherein, Can Que former frame frequency multiplication image, an incomplete back frame frequency multiplication image correspond to the part of former frame original image, the preceding b of back one frame original image * 100% respectively.
Wherein, the frequency multiplication module comprises the 3rd acquiring unit and frequency multiplication unit; The 3rd acquiring unit is used for extracting round values a and fractional value b from frequency X, wherein, and X=a+b; (1) frequency multiplication unit, be used for the start frame original image is carried out process of frequency multiplication, only comprised a complete start frame frequency multiplication image and the start frame frequency multiplication image that accounts for the incompleteness of start frame original image b * 100%, wherein, Can Que former frame frequency multiplication image corresponds to the part of the preceding b of start frame original image * 100%; (2) back one frame original image is carried out process of frequency multiplication, obtain accounting for a back frame frequency multiplication image of filling a vacancy of back one frame original image (1-b) * 100%, wherein, a back frame frequency multiplication image of filling a vacancy corresponds to the part of back one frame original image after b * 100%; And the number percent of a back frame frequency multiplication image of a complete back frame frequency multiplication image number that obtains after the one frame original image frequency multiplication of (3) calculating back and incompleteness, wherein, total frequency of a back frame frequency multiplication image of a complete back frame frequency multiplication image and incompleteness is Y, Y=X-(1-b)=a+2b-1, extract round values c and the fractional value d of total frequency Y, a+2b-1=c+d, frequency multiplication obtains a c complete back frame frequency multiplication image and accounts for a back frame frequency multiplication image of the incompleteness of back one frame original image d * 100%, and a back frame frequency multiplication image of filling a vacancy corresponds to the part of back one frame original image before d * 100%; And can repeat above-mentioned (2)-(3).
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of display system is provided, comprises as the described drive unit that is used for the image demonstration of above-mentioned each embodiment.
The invention has the beneficial effects as follows: the situation that is different from prior art, method for displaying image of the present invention, drive unit and display system, by calculating the frequency that the frame original image need carry out process of frequency multiplication, to the former frame original image, back one frame original image carries out process of frequency multiplication, correspondence obtains a plurality of complete former frame frequency multiplication images, the former frame frequency multiplication image of an incompleteness, the a plurality of complete back frame frequency multiplication images and a back frame frequency multiplication image of an incompleteness, and the total frequency that designs whole former frame frequency multiplication images and whole backs one frame frequency multiplication image equals the mode of the frequency sum of former frame original image and back one frame original image, because former frame, back one frame frequency multiplication image always shows time complete filling former frame, total demonstration time of back one frame original image, do not have between frame and the frame and stop, can solve secret note and ripples line problem, improve the brightness utilization factor, reduce energy consumption.
Description of drawings
Fig. 1 is the synoptic diagram of prior art frequency multiplication mode;
Fig. 2 is the synoptic diagram of another prior art after frequency multiplication mode shown in Figure 1 is improved;
Fig. 3 is the process flow diagram of the method embodiment of a kind of image demonstration of the present invention;
Fig. 4 is the computing method process flow diagram of frequency shown in Figure 3;
Fig. 5 is according to the synoptic diagram that obtains after mode one processing when carrying out process of frequency multiplication;
Fig. 6 is according to the synoptic diagram that obtains after mode two processing when carrying out process of frequency multiplication;
Fig. 7 is the structural representation that the present invention is used for the drive unit embodiment of image demonstration;
Fig. 8 is the concrete structure synoptic diagram of drive unit embodiment shown in Figure 7.
Embodiment
The present invention is described in detail below in conjunction with drawings and embodiments.
In full adopting following method to carry out image with LED display is shown as example and describes.
Consult Fig. 3, Fig. 3 is the process flow diagram of the method embodiment of a kind of image demonstration of the present invention.Embodiment of the present invention comprises the steps:
Step S11, the original image DISPLAY ORDER alternately reads the frame original image successively from least two storage areas frame by frame, respectively as former frame original image and back one frame original image.
Wherein, each two field picture normally shows, promptly each two field picture is not carried out process of frequency multiplication before, the definition frame image is the frame original image.
In step S11, ping-pong operation is adopted in demonstration to the frame original image, concrete, comprise that with storage area it is example that first storage area and second storage area are two, two frame original image difference corresponding stored are in first storage area and second storage area, the sequencing of original image demonstration defines these two frame original images and is respectively former frame original image and back one frame original image frame by frame, the former frame raw image storage is in first storage area, and back one frame raw image storage is at second storage area.
In procedure for displaying, when first storage area was used to read the former frame original image, second storage area was used for storage back one frame original image; And when second storage area was used to read the former frame original image, first storage area was used for storage back one two field picture number.Promptly first storage area and second storage area are finished in turn to adjacent two read-write operations that frame is original, and it is independent of each other.Promptly, when first storage area (or second storage area) when soon running through, just begin to prepare to read second storage area (or first storage area), when last data of first storage area (or second storage area) former frame original image were finished demonstration, the data of second storage area (or first storage area) back, one frame original image began to continue output and show.
Step S12 calculates the frequency that frame original image needs carry out process of frequency multiplication according to pre-defined rule.
Wherein, in conjunction with Fig. 4, Fig. 4 is the computing method process flow diagram of frequency shown in Figure 3.Step S12 comprises following substep:
Step S121 obtains the demonstration time of a frame original image in the unit interval.
Step S122 obtains the correlation parameter of LED display, and wherein, correlation parameter comprises the demonstration number of fields of shift clock frequency, pixel sweep frequency, pixel number and a frame original image of LED display.
Step S123 calculates frequency according to above-mentioned parameter.Concrete, calculate according to following formula:
Wherein, x is a frequency, and f is the shift clock frequency of LED display, and s is the pixel sweep frequency of LED display, and d is the pixel number of LED display, and n is the demonstration number of fields of a two field picture.
In step S12, for example, exterior terminal such as computer, computer transmitted 60 frame original images in one second, and the demonstration time t of each frame original image in the unit interval is 1/60=16667000ns; LED display shift clock frequency f is made as 25Mhz, thus the clock period be T=1/F, so be 40ns; LED display is made as dynamic screen, and pixel sweep frequency s is 8 scannings, and the quantity of the pixel d of every scanning is 128 points; LED display shows that a frame original image according to the demonstration that adds up of many field times, establishes current display screen and be shown as 16 GTG pixels, and the demonstration number of fields n of frame original image is set at 73 (this value can be fixed in development).
According to above-mentioned formula
To calculate x=5.57 in the above-mentioned parameter substitution formula.
Step S13, the former frame original image is carried out process of frequency multiplication, at least obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness, and to the back one frame original image carry out process of frequency multiplication, at least obtain a plurality of complete back frame frequency multiplication images and a back frame frequency multiplication image of an incompleteness, wherein, all former frame frequency multiplication images and all total frequency of back one frame frequency multiplication image equal the frequency sum of former frame original image and back one frame original image.
Wherein, the original image that carries out obtaining after the process of frequency multiplication of frame is defined as frame frequency multiplication image, and the image that definition has frame original image total data is complete frame frequency multiplication image, and the image that definition includes only frame original image partial data is incomplete frame frequency multiplication image.
For among the step S13 " the former frame original image is carried out process of frequency multiplication; obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness at least; and to the back one frame original image carry out process of frequency multiplication; obtain a plurality of complete back frame frequency multiplication images and a back frame frequency multiplication image of an incompleteness at least ", comprise following two kinds of specific implementations at least:
Mode one, mode one comprise following a few sub-steps:
Substep one extracts round values a and fractional value b from frequency X, wherein, and X=a+b.
Substep two carries out process of frequency multiplication according to round values a to former frame original image and back one frame original image, obtains a complete former frame frequency multiplication image and an a complete back frame frequency multiplication image respectively.
Substep three, according to fractional value b former frame original image and back one frame original image are carried out extra process of frequency multiplication, obtain a former frame frequency multiplication image and a back frame frequency multiplication image that accounts for the incompleteness of back one frame original image b * 100% that accounts for the incompleteness of former frame original image b * 100% respectively, wherein, Can Que former frame frequency multiplication image, an incomplete back frame frequency multiplication image correspond to the part of former frame original image, the preceding b of back one frame original image * 100% respectively.
Further, consult Fig. 5, Fig. 5 is according to the synoptic diagram that obtains after mode one processing when carrying out process of frequency multiplication.Wherein, be 5.57 to be that example describes with frequency.
The former frame original image represents that with A back one frame original image is represented with B.Carry out obtaining after the process of frequency multiplication according to mode one: former frame frequency multiplication image comprises the former frame frequency multiplication image A 6 of 5 complete former frame frequency multiplication image A 1～A5 and an incompleteness, wherein, these incomplete former frame frequency multiplication image A 6 included data only account for 57% of former frame original image A total data, and its included data are preceding 57% data of this former frame original image A total data.In like manner, back one frame frequency multiplication image comprises a back frame frequency multiplication image B 6 of 5 complete back frame frequency multiplication image B 1～B5 and an incompleteness, wherein, the a back frame frequency multiplication image B 6 included data of this incompleteness only account for 57% of back one frame original image B total data, and its included data are preceding 57% data of this back one frame original image B total data.
In view of the above, to former frame original image A with after afterwards a frame original image B carries out process of frequency multiplication, a plurality of former frame frequency multiplication image A 1～A6 that correspondence obtains and a plurality of back one frame frequency multiplication image B, 1～B6.Because, the frame frequency multiplication image that carries out obtaining after the process of frequency multiplication has shown the time complete filling time that the frame original image need show altogether, so when showing, the continuous free of discontinuities of A1～A6 shows, B1～B6 is free of discontinuities demonstration continuously also, and, also be that continuous free of discontinuities shows between A6～B1.
Mode two, mode two comprise following a few sub-steps:
Substep 1 extracts round values a and fractional value b from frequency X, wherein, and X=a+b.
Substep 2, the start frame original image is carried out process of frequency multiplication, only comprised a complete start frame frequency multiplication image and the start frame frequency multiplication image that accounts for the incompleteness of start frame original image b * 100%, wherein, Can Que former frame frequency multiplication image corresponds to the part of the preceding b of start frame original image * 100%.
Substep 3, back one frame original image is carried out process of frequency multiplication, obtain accounting for a back frame frequency multiplication image of filling a vacancy of back one frame frame original image (1-b) * 100%, wherein, a back frame frequency multiplication image of filling a vacancy corresponds to the part of back one frame original image after b * 100%.
Substep 4, the number percent of a back frame frequency multiplication image of a complete back frame frequency multiplication image number that obtains after the frame original image frequency multiplication after calculating and incompleteness, wherein, total frequency of a back frame frequency multiplication image of a complete back frame frequency multiplication image and incompleteness is Y, Y=X-(1-b)=a+2b-1, extract round values c and the fractional value d of total frequency Y, a+2b-1=c+d, frequency multiplication obtains a c complete back frame frequency multiplication image and accounts for a back frame frequency multiplication image of the incompleteness of back one frame original image d * 100%, and a back frame frequency multiplication image of filling a vacancy corresponds to the part of back one frame original image before d * 100%.
Substep 5 repeats above-mentioned substep 1 to substep 4, finishes until the frequency multiplication process.
Further, consult Fig. 6, Fig. 6 is according to the synoptic diagram that obtains after mode two processing when carrying out process of frequency multiplication.Wherein, be 5.57 to be that example describes still with frequency.
Need begin to calculate and carry out process of frequency multiplication with the start frame original image, the start frame original image represents that with A a back frame original image of start frame original image represents that with B the back frame original image of this back one frame original image B is represented with C.Carry out obtaining after the process of frequency multiplication according to mode two: start frame frequency multiplication image comprises the start frame frequency multiplication image A 6 of 5 complete start frame frequency multiplication image A 1～A5 and an incompleteness, wherein, these incomplete start frame frequency multiplication image A 6 included data only account for 57% of start frame original image A total data, and its included data are preceding 57% data of this start frame original image A total data.
When back one frame original image B is carried out frequency multiplication, technical scheme according to mode two, need carry out completion earlier to the start frame frequency multiplication image A 6 of incompleteness, a back frame frequency multiplication image B 1 that is about to incomplete start frame frequency multiplication image A 6 and incompleteness is combined into a complete frame frequency multiplication image.In this example, incomplete start frame frequency multiplication image A 6 is preceding 57% data of start frame frequency multiplication image A total data, after the frequency multiplication during frame frequency multiplication image B 1, need back 58% to 100% the data of back one frame frequency multiplication image B 1, to be combined into a complete frame frequency multiplication image from back one frame original image B total data.
Subsequently, consider that again back one frame original image B also needs several complete back frame frequency multiplication images and whether need all to fill a back frame original image B needed demonstration time altogether with a back frame frequency multiplication image of an incompleteness.In this example, it also needs a back frame frequency multiplication image B 7 of 5 complete back frame original image B2～B6 and an incompleteness, a back frame frequency multiplication image B 7 of this incompleteness accounts for 14% of back one frame original image B, and its included data are preceding 14% data of this back one frame original image B total data.
For the back frame original image C of back one frame original image B,, give unnecessary details no longer one by one according to the mode of back one frame original image B is carried out frequency multiplication herein.
For mode two, preferably, fractional value b can be designed as 0.5 among the frequency X of primitive frame image, need carry out relevant design to the hardware parameter of LED display certainly, shows than rule for image, and makes things convenient for process of frequency multiplication.
The process of frequency multiplication mode of pass-through mode two, all uninterrupted continuously demonstration the between each frame frequency multiplication image, blank screen and water ripple phenomenon can not appear, especially before inciting somebody to action, incomplete part is carried out completion in the two frame frequency multiplication images of back, be spliced into a complete frame frequency multiplication image, because it is preceding, content change between the two successive frame original images of back is very little, on image gray levels shows, there is no and abandon phenomenon, can accomplish that free of losses is switched on gray level, in brightness, can effectively solve the problem that blank screen reduces utilization factor, finish the frequency multiplication that to count (rank that can reach the multiple number) arbitrarily of LED display simultaneously.
Gather the correlation parameter that certain company is used for the drive unit that image shows, in LED display hardware parameter unanimity and showed in 1 second under the prerequisite of 60 frame original images, contrast itself and the correlation parameter of the drive unit that adopts the technical solution of the present invention design:
Certain company is: about 373760ns of time that a frame original image shows, stop 15360ns between frame and the frame, and then the time that does not show accounts for 15360/ (373760+15360)=3.94%, and the electric current of this moment is 15mA, intensity level 6000cd/m2; And adopt technical solution of the present invention be, electric current can be dropped to 14mA, reach the gray scale of 6000LM equally.As seen adopt the drive unit of technical solution of the present invention design will save more electric energy.
Embodiment of the present invention, by calculating the frequency that the frame original image need carry out process of frequency multiplication, to the former frame original image, back one frame original image carries out process of frequency multiplication, correspondence obtains a plurality of complete former frame frequency multiplication images, the former frame frequency multiplication image of an incompleteness, the a plurality of complete back frame frequency multiplication images and a back frame frequency multiplication image of an incompleteness, and the total frequency that designs whole former frame frequency multiplication images and whole backs one frame frequency multiplication image equals the mode of the frequency sum of former frame original image and back one frame original image, because former frame, back one frame frequency multiplication image always shows time complete filling former frame, total demonstration time of back one frame original image, do not have between frame and the frame and stop, can solve secret note and ripples line problem, improve the brightness utilization factor, reduce energy consumption.
The present invention also provides a kind of drive unit that image shows that is used for.
Consult Fig. 7, Fig. 7 is the structural representation that the present invention is used for the drive unit embodiment of image demonstration.The drive unit of first embodiment of the invention comprises: memory module 11, read module 12, computing module 13 and frequency multiplication module 14.Wherein:
Read module 12 is used for frame by frame that the original image DISPLAY ORDER alternately reads the frame original image from least two storage areas successively, respectively as former frame original image and back one frame original image.
In a concrete application implementation mode, in conjunction with Fig. 8, computing module 13 also comprises first acquiring unit 131, second acquisition unit 132 and computing unit 133.Concrete:
First acquiring unit 131 is used to obtain the demonstration time of a frame original image in the unit interval;
Wherein, x is a frequency, and the demonstration time of frame original image in the unit interval, f is the shift clock frequency of LED display, and s is the pixel sweep frequency of LED display, and d is the pixel number of LED display, and n is the demonstration number of fields of a two field picture.
In another embodiment, continue to consult Fig. 8, frequency multiplication module 14 comprises the 3rd acquiring unit 141 and frequency multiplication unit 142.In a concrete application implementation mode, the 3rd acquiring unit 141 and frequency multiplication unit 142 can be chosen following two kinds of patterns wantonly and handle:
Pattern one:
The 3rd acquiring unit 141 is used for extracting round values a and fractional value b from frequency X, wherein, and X=a+b;
Perhaps, can be as pattern two:
The 3rd acquiring unit 141 is used for extracting round values a and fractional value b from frequency X, wherein, and X=a+b;
Frequency multiplication unit 142, be used for (1) the start frame original image is carried out process of frequency multiplication, only comprised a complete start frame frequency multiplication image and the start frame frequency multiplication image that accounts for the incompleteness of start frame original image b * 100%, wherein, Can Que former frame frequency multiplication image corresponds to the part of the preceding b of start frame original image * 100%; (2) back one frame original image is carried out process of frequency multiplication, obtain accounting for a back frame frequency multiplication image of filling a vacancy of back one frame original image (1-b) * 100%, wherein, a back frame frequency multiplication image of filling a vacancy corresponds to the part of back one frame original image after b * 100%; And the number percent of a back frame frequency multiplication image of a complete back frame frequency multiplication image number that obtains after the one frame original image frequency multiplication of (3) calculating back and incompleteness, wherein, total frequency of a back frame frequency multiplication image of a complete back frame frequency multiplication image and incompleteness is Y, Y=X-(1-b)=a+2b-1, extract round values c and the fractional value d of total frequency Y, a+2b-1=c+d, frequency multiplication obtains a c complete back frame frequency multiplication image and accounts for a back frame frequency multiplication image of the incompleteness of back one frame original image d * 100%, and a back frame frequency multiplication image of filling a vacancy corresponds to the part of back one frame original image before d * 100%; And can repeat above-mentioned (2)-(3).
Embodiment of the present invention, by calculating the frequency that the frame original image need carry out process of frequency multiplication, to the former frame original image, back one frame original image carries out process of frequency multiplication, correspondence obtains a plurality of complete former frame frequency multiplication images, the former frame frequency multiplication image of an incompleteness, the a plurality of complete back frame frequency multiplication images and a back frame frequency multiplication image of an incompleteness, and the total frequency that designs whole former frame frequency multiplication images and whole backs one frame frequency multiplication image equals the mode of the frequency sum of former frame original image and back one frame original image, because former frame, back one frame frequency multiplication image always shows time complete filling former frame, total demonstration time of back one frame original image, do not have between frame and the frame and stop, can solve secret note and ripples line problem, improve the brightness utilization factor, reduce energy consumption.
In the above-mentioned embodiment, this drive unit comprises transmission card (figure does not show) and receiving card (figure does not show), memory module 11, read module 12, computing module 13 and frequency multiplication module 14 all are integrated in the receiving card, and in the memory module 11 primary source of frame raw image data in receiving card, concrete, receiving card obtains and derives from the collection of outside video card (as the computer video card) to the frame raw image data.
In addition, the present invention also provides a kind of display system.
This display system comprises as the described drive unit that is used for the image demonstration of above-mentioned arbitrary embodiment.
The above only is embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. the method that image shows is characterized in that, comprises the steps:
The original image DISPLAY ORDER alternately reads described frame original image successively from least two storage areas frame by frame, respectively as former frame original image and back one frame original image;
Calculate the frequency that described frame original image needs carry out process of frequency multiplication according to pre-defined rule;
Described former frame original image is carried out process of frequency multiplication, at least obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness, and described back one frame original image carried out process of frequency multiplication, at least obtain a plurality of complete back frame frequency multiplication images and a back frame frequency multiplication image of an incompleteness, wherein, total frequency of whole described former frame frequency multiplication images and whole described backs one frame frequency multiplication image equals the frequency sum of described former frame original image and described back one frame original image.
2. the method that image according to claim 1 shows is characterized in that, calculates according to pre-defined rule among the step of frequency that described frame original image needs carry out process of frequency multiplication described, comprising:
Obtain the described demonstration time of described frame original image in the unit interval;
Obtain the correlation parameter of LED display, wherein, described correlation parameter comprises the demonstration number of fields of shift clock frequency, pixel sweep frequency, pixel number and a described frame original image of described LED display;
Calculate described frequency according to following formula:
Wherein, x is a frequency, and t is the demonstration time of described frame original image in the unit interval, f is the shift clock frequency of LED display, s is the pixel sweep frequency of LED display, and d is the pixel number of LED display, and n is the demonstration number of fields of a two field picture.
3. the method that image according to claim 2 shows, it is characterized in that, described described former frame original image is carried out process of frequency multiplication, at least obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness, and described back one frame original image carried out process of frequency multiplication, at least obtain comprising among the step of a back frame frequency multiplication image of a plurality of complete back frame frequency multiplication images and an incompleteness:
From described frequency X, extract round values a and fractional value b, wherein, X=a+b;
According to described round values a described former frame original image and described back one frame original image are carried out process of frequency multiplication, obtain a described complete former frame frequency multiplication image and an a described complete back frame frequency multiplication image respectively;
According to described fractional value b described former frame original image and described back one frame original image are carried out extra process of frequency multiplication, obtain a former frame frequency multiplication image and a back frame frequency multiplication image that accounts for the described incompleteness of the described b of described back one frame original image * 100% that accounts for the described incompleteness of described former frame original image b * 100% respectively, wherein, a back frame frequency multiplication image of the former frame frequency multiplication image of described incompleteness, described incompleteness corresponds to the part of described former frame original image, the preceding b of described back one frame original image * 100% respectively.
4. the method that image according to claim 2 shows, it is characterized in that, described described former frame original image is carried out process of frequency multiplication, at least obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness, and described back one frame original image carried out process of frequency multiplication, at least obtain among the step of a back frame frequency multiplication image of a plurality of complete back frame frequency multiplication images and an incompleteness, described described former frame original image is carried out process of frequency multiplication, after start frame original image frequency multiplication, obtain including only the start frame frequency multiplication image of a plurality of complete start frame frequency multiplication images and an incompleteness, obtain comprising a frame frequency multiplication image of filling a vacancy after all the other two field picture frequencys multiplication, the a plurality of complete frame frequency multiplication images and the frame frequency multiplication image of an incompleteness comprise the steps:
(1) from described frequency X, extract round values a and fractional value b, wherein, X=a+b;
(2) described start frame original image is carried out process of frequency multiplication, only comprised a described complete start frame frequency multiplication image and the start frame frequency multiplication image that accounts for the described incompleteness of described start frame original image b * 100%, wherein, the former frame frequency multiplication image of described incompleteness corresponds to the part of the preceding b of described start frame original image * 100%;
(3) back one frame original image is carried out process of frequency multiplication, obtain accounting for a back frame frequency multiplication image of filling a vacancy of described back one frame frame original image (1-b) * 100%, wherein, a described back frame frequency multiplication image of filling a vacancy corresponds to the part of described back one frame original image after b * 100%;
(4) number percent of a back frame frequency multiplication image of a described complete back frame frequency multiplication image number that obtains after the one frame original image frequency multiplication of the described back of calculating and described incompleteness, wherein, total frequency of a back frame frequency multiplication image of described complete back frame frequency multiplication image and described incompleteness is Y, Y=X-(1-b)=a+2b-1, extract round values c and the fractional value d of described total frequency Y, a+2b-1=c+d, frequency multiplication obtains c the described complete back frame frequency multiplication image and a back frame frequency multiplication image of the described incompleteness that accounts for described back one frame original image d * 100%, and a described back frame frequency multiplication image of filling a vacancy corresponds to the part of described back one frame original image before d * 100%;
(5) repeat above-mentioned steps (3)-(4).
5. the method that image according to claim 4 shows is characterized in that,
Fractional value b is 0.5 among the described frequency X.
6. one kind is used for the drive unit that image shows, it is characterized in that, comprising:
Memory module is used for the storage frame original image;
Read module is used for frame by frame that the original image DISPLAY ORDER alternately reads described frame original image from least two storage areas successively, respectively as former frame original image and back one frame original image;
Computing module is used for calculating the frequency that described frame original image needs carry out process of frequency multiplication according to pre-defined rule;
The frequency multiplication module, be used for described former frame original image is carried out process of frequency multiplication, at least obtain a plurality of complete former frame frequency multiplication images and the former frame frequency multiplication image of an incompleteness, and described back one frame original image carried out process of frequency multiplication, at least obtain a plurality of complete back frame frequency multiplication images and a back frame frequency multiplication image of an incompleteness, wherein, total frequency of whole described former frame frequency multiplication images and whole described backs one frame frequency multiplication image equals the frequency sum of described former frame original image and described back one frame original image.
7. drive unit according to claim 6 is characterized in that,
Described computing module comprises first acquiring unit, second acquisition unit and computing unit;
Described first acquiring unit is used to obtain the described demonstration time of described frame original image in the unit interval;
Described second acquisition unit is used to obtain the correlation parameter of LED display, and wherein, described correlation parameter comprises the demonstration number of fields of shift clock frequency, pixel sweep frequency, pixel number and a described frame original image of described LED display;
Described computing unit is used for calculating described frequency according to following formula:
Wherein, x is a frequency, the demonstration time of described frame original image in the unit interval, f is the shift clock frequency of LED display, s is the pixel sweep frequency of LED display, and d is the pixel number of LED display, and n is the demonstration number of fields of a two field picture.
8. drive unit according to claim 7 is characterized in that,
Described frequency multiplication module comprises the 3rd acquiring unit and frequency multiplication unit;
Described the 3rd acquiring unit is used for extracting round values a and fractional value b from described frequency X, wherein, and X=a+b;
Described frequency multiplication unit is used for according to described round values a described former frame original image and described back one frame original image being carried out process of frequency multiplication, obtains a described complete former frame frequency multiplication image and an a described complete back frame frequency multiplication image respectively; And described former frame original image and described back one frame original image are carried out extra process of frequency multiplication according to described fractional value b, obtain a former frame frequency multiplication image and a back frame frequency multiplication image that accounts for the described incompleteness of the described b of described back one frame original image * 100% that accounts for the described incompleteness of described former frame original image b * 100% respectively, wherein, a back frame frequency multiplication image of the former frame frequency multiplication image of described incompleteness, described incompleteness corresponds to the part of described former frame original image, the preceding b of described back one frame original image * 100% respectively.
9. drive unit according to claim 7 is characterized in that,
Described frequency multiplication module comprises the 3rd acquiring unit and frequency multiplication unit;
Described the 3rd acquiring unit is used for extracting round values a and fractional value b from described frequency X, wherein, and X=a+b;
Described frequency multiplication unit, be used for (1) described start frame original image is carried out process of frequency multiplication, only comprised a described complete start frame frequency multiplication image and the start frame frequency multiplication image that accounts for the described incompleteness of described start frame original image b * 100%, wherein, the former frame frequency multiplication image of described incompleteness corresponds to the part of the preceding b of described start frame original image * 100%; (2) back one frame original image is carried out process of frequency multiplication, obtain accounting for a back frame frequency multiplication image of filling a vacancy of described back one frame original image (1-b) * 100%, wherein, a described back frame frequency multiplication image of filling a vacancy corresponds to the part of described back one frame original image after b * 100%; And the number percent of a back frame frequency multiplication image of a described complete back frame frequency multiplication image number that obtains after the one frame original image frequency multiplication of the described back of (3) calculating and described incompleteness, wherein, total frequency of a back frame frequency multiplication image of described complete back frame frequency multiplication image and described incompleteness is Y, Y=X-(1-b)=a+2b-1, extract round values c and the fractional value d of described total frequency Y, a+2b-1=c+d, frequency multiplication obtains c the described complete back frame frequency multiplication image and a back frame frequency multiplication image of the described incompleteness that accounts for described back one frame original image d * 100%, and a described back frame frequency multiplication image of filling a vacancy corresponds to the part of described back one frame original image before d * 100%; And can repeat above-mentioned (2)-(3).
10. a display system is characterized in that, comprises each described drive unit that is used for the image demonstration as claim 6-9.
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