CN102368376B - Method and device for increasing resolution ratio of dot-matrix display screen and dot-matrix display screen system - Google Patents
Method and device for increasing resolution ratio of dot-matrix display screen and dot-matrix display screen system Download PDFInfo
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Abstract
The invention discloses a method and a device for increasing the resolution ratio of a dot-matrix display screen and a dot-matrix display screen system. The method comprises the steps of: segmenting each pixel of the dot-matrix display screen into M sub-pixels in space respectively, wherein M is a positive integer; and displaying an image displayed by each pixel on a screen at a position corresponding to each sub-pixel periodically according to a set signal switching frequency. According to the scheme provided by the invention, a primary image is displayed by means of each sub-pixel respectively within one period, so that images corresponding to the M sub-pixels can be displayed within one period; because of a vision persistence effect of human eyes, a display effect based on that each pixel in each period is segmented into M sub-pixels is about to generate, so that the resolution ratio of the dot-matrix display screen is increased by M times, the resolution ratio of the dot-matrix display screen is increased, and the dot-matrix display screen is made to be suitable for being watched at near distance in indoor occasions.
Description
Technical field
The present invention relates to a kind of method, device and dot matrix display screen system that improves dot matrix display screen resolution.
Background technology
Take the LED dot matrix display screen as example, the large area LED dot matrix display screen is widely used in the occasion that the applicable high brightness such as outdoor advertising, stadium are watched at a distance at present, because the LED dot matrix display screen exists that the pixel particle is large, filling rate is low, (filling rate refers to the ratio of pixel light-emitting area and average every pixel total area, as every pixel total area of the LED screen of 3mm spacing is 3mm*3mm=9mm
2) etc. problem, thereby can't use in the occasion of closely watching application scenarios, pulpit such as power scheduling, subway scheduling.LED dot matrix display screen producer is also making great efforts to reduce the pixel distance, but, along with reducing of a distance, producting process difficulty and cost also sharply increase, can't reach practical degree, at present to take 10mm and 6mm be main flow to LED dot matrix display screen pel spacing, 3mm has accomplished in part producer, but think further to reduce again spacing as to 2mm with interior by extremely difficult, and unit display area cost rises exponentially, if meet the demand of closely watching, spacing need to be controlled to 1.5mm rises to more than 70% with interior and filling rate, the LED dot matrix display screen of prior art can't reach at all.
Summary of the invention
For above-mentioned problems of the prior art, the object of the present invention is to provide a kind of method of dot matrix display screen resolution, a kind of device and a kind of dot matrix display screen system that improves dot matrix display screen resolution of improving, the resolution that it can improve dot matrix display screen, make dot matrix display screen applicable to indoor occasion of closely watching.
For achieving the above object, the present invention by the following technical solutions:
A kind of method that improves dot matrix display screen resolution comprises step:
Each pixel of dot matrix display screen spatially is divided into respectively to M sub-pixel, and M is positive integer;
The image periodically each pixel shown according to the signal switching frequency of setting corresponding position corresponding with each sub-pixel on screen shows.
A kind of device that improves dot matrix display screen resolution comprises:
The switching frequency setup unit, for the setting signal switching frequency;
The pixel segmentation display unit, for each pixel of dot matrix display screen spatially is divided into respectively to M sub-pixel, M is positive integer, and the image periodically each pixel shown according to the signal switching frequency of setting corresponding position corresponding with each sub-pixel on screen shows.
A kind of dot matrix display screen system, comprise the device of raising dot matrix display screen resolution as above.
Scheme according to the invention described above, it is that each pixel of dot matrix display screen spatially is divided into to M sub-pixel, and the image periodically each pixel shown according to the signal switching frequency of setting corresponding position corresponding with each sub-pixel on screen shows, in one-period, show an image by each sub-pixel respectively, thereby can show M the image that sub-pixel is corresponding in one-period, visual persistence effect due to human eye, will be created in the display effect that interior each pixel of one-period is divided into M pixel, thereby the resolution of dot matrix display screen is improved to M doubly, improved the resolution of dot matrix display screen, make dot matrix display screen applicable to indoor occasion of closely watching.
The accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the embodiment of the method for raising dot matrix display screen resolution of the present invention;
Fig. 2 is the schematic diagram that wherein a kind of pixel space is cut apart;
Fig. 3 is the schematic diagram that another pixel space is cut apart;
Fig. 4 is the structural representation of the device embodiment of raising dot matrix display screen resolution of the present invention.
Embodiment
Below in conjunction with concrete preferred embodiment, the present invention program is described in detail.
Shown in Figure 1, be the schematic flow sheet of the embodiment of the method for raising dot matrix display screen resolution of the present invention, it comprises step:
Step S101: each pixel of dot matrix display screen spatially is divided into respectively to M sub-pixel, and M is at least 2 positive integer;
Step S102: the image periodically each pixel shown according to the signal switching frequency of setting corresponding position corresponding with each sub-pixel on screen shows.
According to the scheme in the present embodiment, it is that each pixel of dot matrix display screen spatially is divided into to M sub-pixel, and the image periodically each pixel shown according to the signal switching frequency of setting corresponding position corresponding with each sub-pixel on screen shows, in one-period, show an image by each sub-pixel respectively, thereby can show M the image that sub-pixel is corresponding in one-period, visual persistence effect due to human eye, will be created in the display effect that interior each pixel of one-period is divided into M pixel, thereby the resolution of dot matrix display screen is improved to M doubly, improved the resolution of dot matrix display screen, make dot matrix display screen applicable to indoor occasion of closely watching.
Wherein, above-mentioned while spatially a pixel segmentation being become to M sub-pixel, according to actual needs, different partitioning schemes can be arranged:
A kind of partitioning scheme wherein, can carry out pixel segmentation with circular partitioning scheme, with each center line through the primitive shape central point, cut apart, for example, while making presenting of pixel be shaped as circle due to the edge filling of pixel, can to it, be distinguished with circular diameter, can be divided into a plurality of equal portions according to actual needs, be that the M value can be done different settings according to actual needs, for example 2, 3, 4, 5, 6...... etc., pixel equal portions partitioning scheme during M=8 under this partitioning scheme has been shown in Fig. 2, during division, the area of each equal portions can be not identical, in order to obtain better viewing effect, carry out the division of equal equal portions under preferable case,
Another dividing mode, can adopt the mode of rectangular divided is cut apart, for example a pixel segmentation is become to K*L sub-pixel, M=K*L, K, L are 1 positive integer when different, and wherein, above-mentioned K, L represent respectively a pixel is gone up in the row direction and doubly increases to K doubly, multiplication L is doubly on column direction, in order to guarantee to have improved the length and width symmetry of the image after resolution, usually K, L are got to identical value.If for needs have the viewing effect of different individual characteies, customized vision effects such as elongation, flattening, K, L can get different numerical value, do not repeat them here.A pixel has been shown in Fig. 3 and under this partitioning scheme, has cut apart schematic diagram when K=2, L=2.
In addition, display mode according to present image display periods, there is no flickering in order to want the underwriter to observe picture with the aid of pictures, the frame per second of image should be more than or equal to 50Hz, be to refresh 50 pictures p.s., so, in the present invention program, in order to reach the image frame per second identical with existing mode, the switching frame per second between sub-pixel and sub-pixel should reach 50*M, the signal switching frequency that is above-mentioned setting should reach 50*M Hz, a sub-pixel of each pixel of dot matrix display screen shows that the complete time shown to next sub-pixel should reach 1/ (50*M) second, with above-mentioned K=2, L=2 is example, switch speed should reach 1/ (50*4)=5 millisecond, now, above-mentioned one-period is equivalent to the display cycle of an existing secondary picture, 1/50 second.Certainly, according to actual needs, if less demanding to refresh rate, flickering, or needing the refresh rate of requirements at the higher level, corresponding switching frequency also can be done other setting, for example switching frequency is doubled, be set to 100*M, perhaps switching frequency is kept to generally, is set to 25*M etc., will not add to repeat at this.
In the situation that will guarantee that the frame per second of image reaches 50Hz, the switch speed between sub-pixel and sub-pixel should be greater than 50*M, realize switching if adopt the LCD light valve, switching speed based on existing LCD light valve, it is optimal that multiplication constant M gets 4, and now the minimum switch speed of light valve is 200Hz.If total multiplication constant gets 9, the switching minimum speed of light valve reaches 450Hz, and the switching speed of existing LCD light valve is more difficult reaching, but can be improved to realize by the material to light valve and driving circuit.
According to the method for the invention described above, the present invention also provides a kind of device that improves dot matrix display screen resolution.Shown in Figure 2, be the structural representation of apparatus of the present invention embodiment, it includes:
The switching frequency setup unit, for the setting signal switching frequency;
The pixel segmentation display unit, for each pixel of dot matrix display screen spatially is divided into respectively to M sub-pixel, M is positive integer, and the image periodically each pixel shown according to the signal switching frequency of setting corresponding position corresponding with each sub-pixel on screen shows.
Wherein, above-mentioned pixel segmentation unit can be by controlled light valve, movably perforate diaphragm array, rotating perforate diaphragm array or other can be controlled light and realize by whether equipment.The displaying time of setting a sub-pixel is a subcycle, while realizing, take controlled light valve as example, can be specifically: in a subcycle, make to only have in all sub-pixels corresponding to a pixel the controlled light valve of a sub-pixel can allow light to pass through and arrive to receive screen, other sub-pixels can't pass through, the controlled light valve that is circulated to next sub-pixel at next son in cycle can allow light to pass through and arrive to receive screen, other sub-pixels can't pass through, in any subcycle, in all sub-pixels corresponding to any pixel, only have a sub-pixel light can by and reach the reception screen.That is to say, in one-period, each sub-pixel of a pixel all have and for once chance arrive to receive screen through light valve, thereby the visual persistence effect due to human eye, will be created in the display effect that interior every the pixel of one-period is divided into M sub-pixel, thereby the resolution of dot matrix display screen is improved to M doubly, improved the resolution of dot matrix display screen, make dot matrix display screen applicable to indoor occasion of closely watching.What adopt perforate diaphragm array, rotating perforate diaphragm array or other equipment realizes that principle similarly, does not repeat them here.
What in apparatus of the present invention, the setting means of the dividing mode of M sub-pixel, switching frequency can be with in the invention described above method is identical, does not repeat them here.
According to the device of the raising dot matrix display screen resolution of the invention described above, the present invention also provides a kind of dot matrix display screen system, and the device that it comprises raising dot matrix display screen resolution as above, do not repeat them here.
The applied dot matrix display screen of the invention described above scheme, can be LED dot matrix display screen, OLED dot matrix display screen or other dot matrix display screens shown by the some array mode, according to actual needs, the invention described above scheme can be applicable to any dot matrix display screen, at this, will not add to repeat.
Above-described embodiment of the present invention, be only the detailed description to preferred embodiment of the present invention, do not form limiting the scope of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (10)
1. a method that improves dot matrix display screen resolution, is characterized in that, comprises step:
Each pixel of dot matrix display screen spatially is divided into respectively to M sub-pixel, and M is positive integer;
According to the signal switching frequency of setting periodically allow the light corresponding with each sub-pixel pass through and arrives screen, by the corresponding position demonstration corresponding with each sub-pixel on screen of the image of each pixel demonstration.
2. the method for raising dot matrix display screen resolution according to claim 1, is characterized in that M=4.
3. the method for raising dot matrix display screen resolution according to claim 1 is characterized in that:
M=K*L, K, L are 1 positive integer while being different, and K means a pixel is gone up in the row direction and doubly increases to K doubly, and L means a pixel is doubled to L doubly on column direction.
4. the method for raising dot matrix display screen resolution according to claim 3, is characterized in that: K=L=2.
5. according to the method for the described raising dot matrix display screen of claim 1 to 4 any one resolution, it is characterized in that:
The signal switching frequency of described setting is M*50Hz.
And/or
Described dot matrix display screen is LED dot matrix display screen or OLED dot matrix display screen.
6. a device that improves dot matrix display screen resolution, is characterized in that, comprising:
The switching frequency setup unit, for the setting signal switching frequency;
The pixel segmentation display unit, for each pixel of dot matrix display screen spatially is divided into respectively to M sub-pixel, M is positive integer, and according to the signal switching frequency of setting periodically allow the light corresponding with each sub-pixel pass through and arrives screen, by the corresponding position demonstration corresponding with each sub-pixel on screen of the image of each pixel demonstration.
7. the device of raising dot matrix display screen resolution according to claim 6, is characterized in that, described pixel segmentation unit is controlled light valve or movably perforate diaphragm array or rotating perforate diaphragm array.
8. according to the device of the described raising dot matrix display screen of claim 6 or 7 resolution, it is characterized in that:
M=K*L or M=2*2, K, L are 1 positive integer while being different, and K means a pixel is gone up in the row direction and doubly increases to K doubly, and L means a pixel is doubled to L doubly on column direction;
And/or
The signal switching frequency of described setting is M*50Hz.
9. according to the device of the described raising dot matrix display screen of claim 6 to 8 any one resolution, it is characterized in that, described dot matrix display screen is LED dot matrix display screen or OLED dot matrix display screen.
10. a dot matrix display screen system, is characterized in that, comprises the device of raising dot matrix display screen resolution as described as claim 6 to 9 any one.
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| CN109841185A (en) * | 2017-11-28 | 2019-06-04 | 薄淑英 | Micro-displacement high definition VR display screen |
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| CN102629464A (en) * | 2012-04-16 | 2012-08-08 | 广东威创视讯科技股份有限公司 | LED (Light Emitting Diode) display screen pixel multiplication device |
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| CN1892745A (en) * | 2005-07-08 | 2007-01-10 | 中国科学院长春光学精密机械与物理研究所 | Method of pixel multiplexing to increase display screen image analytic degree |
| CN101086824A (en) * | 2006-06-09 | 2007-12-12 | 瀚宇彩晶股份有限公司 | LCD pixel structure and its driving method |
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| US6927754B2 (en) * | 2003-02-06 | 2005-08-09 | Wintek Corporation | Method and apparatus for improving resolution of display unit |
| JP2009181097A (en) * | 2008-02-01 | 2009-08-13 | Nec Electronics Corp | Multi-domain display device |
| JP5415054B2 (en) * | 2008-10-28 | 2014-02-12 | セイコーエプソン株式会社 | Driving method and electro-optical device |
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| CN1892745A (en) * | 2005-07-08 | 2007-01-10 | 中国科学院长春光学精密机械与物理研究所 | Method of pixel multiplexing to increase display screen image analytic degree |
| CN101086824A (en) * | 2006-06-09 | 2007-12-12 | 瀚宇彩晶股份有限公司 | LCD pixel structure and its driving method |
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| CN109841185A (en) * | 2017-11-28 | 2019-06-04 | 薄淑英 | Micro-displacement high definition VR display screen |
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