CN102368376A - 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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- CN102368376A CN102368376A CN2011102750583A CN201110275058A CN102368376A CN 102368376 A CN102368376 A CN 102368376A CN 2011102750583 A CN2011102750583 A CN 2011102750583A CN 201110275058 A CN201110275058 A CN 201110275058A CN 102368376 A CN102368376 A CN 102368376A
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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
With the LED dot matrix display screen is example; The large area LED dot matrix display screen is widely used in the occasion that suitable high brightness such as outdoor advertising, stadium are watched at a distance at present; (filling rate refers to the ratio of pixel light-emitting area and average every pixel total area, is 3mm*3mm=9mm like every pixel total area of the LED screen of 3mm spacing because the LED dot matrix display screen exists that the pixel particle is big, filling rate is low
2) etc. problem, thereby can't use in the occasion of closely watching application scenarios, pulpit such as for example power scheduling, subway scheduling.LED dot matrix display screen producer is also making great efforts to reduce the pixel distance, still, and along with reducing of a distance; Producting process difficulty and cost also sharply increase, and can't reach practical degree, and LED dot matrix display screen pel spacing is a main flow with 10mm and 6mm at present; 3mm has accomplished in part producer; But think further to reduce again spacing as to 2mm with interior with extremely difficult, and unit display area cost rises exponentially, if will satisfy the demand of closely watching; Need spacing be controlled to 1.5mm and rise 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
To the problem that exists in the above-mentioned prior art; The object of the present invention is to provide a kind of method that improves dot matrix display screen resolution, a kind of device that improves dot matrix display screen resolution and a kind of dot matrix display screen system; The resolution that it can improve dot matrix display screen makes dot matrix display screen applicable to indoor occasion of closely watching.
For achieving the above object, the present invention adopts following technical scheme:
A kind of method that improves dot matrix display screen resolution comprises step:
Each pixel of dot matrix display screen spatially is divided into the M subpixels respectively, and M is a positive integer;
Periodically each pixel images displayed corresponding position corresponding with each sub-pixel on screen shown according to the signal switching frequency of setting.
A kind of device that improves dot matrix display screen resolution comprises:
The switching frequency setup unit is used for the setting signal switching frequency;
The pixel segmentation display unit; Be used for each pixel of dot matrix display screen spatially is divided into the M subpixels respectively; M is a positive integer, and periodically each pixel images displayed corresponding position corresponding with each sub-pixel on screen is shown according to the signal switching frequency of setting.
A kind of dot matrix display screen system comprises the device of aforesaid raising dot matrix display screen resolution.
Scheme according to the invention described above; It is that each pixel with dot matrix display screen spatially is divided into the M subpixels; And periodically each pixel images displayed corresponding position corresponding with each sub-pixel on screen shown according to the signal switching frequency of setting, promptly in one-period, respectively through each sub-pixel demonstration image once; Thereby in one-period, can show the image that the M subpixels is corresponding; Because the visual persistence effect of 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 M doubly; Improved the resolution of dot matrix display screen, made dot matrix display screen applicable to indoor occasion of closely watching.
Description of drawings
Fig. 1 is the schematic flow sheet of the method embodiment of raising dot matrix display screen resolution of the present invention;
Fig. 2 is the synoptic diagram that wherein a kind of pixel space is cut apart;
Fig. 3 is the synoptic diagram that other a kind of 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
Preferred embodiment below in conjunction with concrete is set forth the present invention program in detail.
Referring to shown in Figure 1, be the schematic flow sheet of the method embodiment of 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 the M subpixels respectively, and M is at least 2 positive integer;
Step S102: periodically each pixel images displayed corresponding position corresponding with each sub-pixel on screen shown according to the signal switching frequency of setting.
According to the scheme in the present embodiment; It is that each pixel with dot matrix display screen spatially is divided into the M subpixels; And periodically each pixel images displayed corresponding position corresponding with each sub-pixel on screen shown according to the signal switching frequency of setting, promptly in one-period, respectively through each sub-pixel demonstration image once; Thereby in one-period, can show the image that the M subpixels is corresponding; Because the visual persistence effect of 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 M doubly; Improved the resolution of dot matrix display screen, made dot matrix display screen applicable to indoor occasion of closely watching.
Wherein, above-mentioned when spatially a pixel segmentation being become the M subpixels, according to actual needs different partitioning schemes can be arranged:
Wherein a kind of partitioning scheme can carry out pixel segmentation with the partitioning scheme of circle, promptly cuts apart with each center line that passes the primitive shape central point; For example the edge filling owing to pixel makes appearing when being shaped as circle of pixel; Can distinguish it with the diameter of circle, can be divided into a plurality of equal portions according to actual needs, promptly the M value can be done different settings according to actual needs; For example 2,3,4,5,6...... or the like; Pixel equal portions partitioning scheme during M=8 under this partitioning scheme has been shown among Fig. 2, and during division, the area of each equal portions can be inequality; In order to obtain better viewing effect, carry out the division of equal equal portions under the preferable case;
A kind of in addition dividing mode can adopt the mode of rectangle lattice is cut apart, and for example a pixel segmentation is become the K*L subpixels; M=K*L; K, L be not for or not 1 positive integer simultaneously, wherein, above-mentioned K, L represent respectively with a pixel multiplication on the line direction for 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 the resolution, usually K, L are got equal values.If in order to need the viewing effect of different individual characteies, for example elongate, customized vision effect such as flattening, then K, L can get different numerical, do not repeat them here.A pixel has been shown among Fig. 3 under this partitioning scheme, has cut apart synoptic diagram when K=2, L=2.
In addition, the display mode according to present image display periods does not have flickering in order to want the underwriter to observe picture with the aid of pictures; The frame per second of image should promptly refresh 50 pictures p.s., so more than or equal to 50Hz; In the present invention program, in order to reach the image frame per second identical with existing mode, then the switching frame per second between sub-pixel and the sub-pixel should reach 50*M; The signal switching frequency that is above-mentioned setting should reach 50*M Hz, and a subpixels of each pixel of dot matrix display screen shows to finish to the time that next sub-pixel shows and should reach 1/ (50*M) second, is example with above-mentioned K=2, L=2; Switch speed should reach 1/ (50*4)=5 millisecond; At this moment, above-mentioned one-period is equivalent to the display cycle of an existing secondary picture, promptly 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 or the like, will not add to give unnecessary details at this.
Reach in the frame per second that will guarantee image under the situation of 50Hz; Then the switch speed between sub-pixel and the sub-pixel should be greater than 50*M; If adopting the LCD light valve realizes switching; Based on the switching speed of existing LCD light valve, it is optimal that multiplication constant M gets 4, and this moment, the minimum switch speed of light valve was 200Hz.If total multiplication constant gets 9, then the switching minimum speed of light valve reaches 450Hz, difficult the reaching of switching speed of existing LCD light valve, but can realize through the material of light valve and driving circuit are improved.
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.Referring to shown in Figure 2, be the structural representation of apparatus of the present invention embodiment, it includes:
The switching frequency setup unit is used for the setting signal switching frequency;
The pixel segmentation display unit; Be used for each pixel of dot matrix display screen spatially is divided into the M subpixels respectively; M is a positive integer, and periodically each pixel images displayed corresponding position corresponding with each sub-pixel on screen is shown according to the signal switching frequency of setting.
Wherein, above-mentioned pixel segmentation unit can be through controlled light valve, movably perforate diaphragm array, rotating perforate diaphragm array or other may command light are realized through whether equipment.The demonstration time of setting a subpixels is a sub-cycles; During realization; With controlled light valve is example; Specifically can be: in a sub-cycles, make the controlled light valve that has only a subpixels in all sub-pixels corresponding to a pixel can allow light to pass through and arrive receive screen, other sub-pixels can't pass through, the controlled light valve that is circulated to next sub-pixel in the cycle at next son can allow light to pass through and arrives the reception screen, other sub-pixels can't pass through; Promptly in any sub-cycles, in corresponding all sub-pixels of any pixel, have only a subpixels light can through and reach the reception screen.That is to say; In one-period, each sub-pixel of a pixel all have and for once chance pass light valve and arrive to receive screen, thereby because the visual persistence effect of human eye; Will be created in the one-period display effect that every pixel is divided into the M subpixels; Thereby the resolution of dot matrix display screen is improved M doubly, improved the resolution of dot matrix display screen, make dot matrix display screen applicable to indoor occasion of closely watching.The realization principle of employing perforate diaphragm array, rotating perforate diaphragm array or other equipment does not similarly repeat them here.
In apparatus of the present invention the setting means of the dividing mode of M subpixels, switching frequency can with the invention described above method in identical, do 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 aforesaid raising dot matrix display screen resolution does 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 that shows through the some array mode; According to actual needs, the invention described above scheme can be applicable to any dot matrix display screen, will not add to give unnecessary details at this.
Above-described embodiment of the present invention only is the detailed description to preferred embodiment of the present invention, does not constitute the qualification to protection domain of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the 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 the M subpixels respectively, and M is a positive integer;
Periodically each pixel images displayed corresponding position corresponding with each sub-pixel on screen shown according to the signal switching frequency of setting.
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 be not for or not 1 positive integer simultaneously, and K representes a pixel double on line direction and is K times, and L representes a pixel is doubled L times 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 any described raising dot matrix display screen resolution of claim 1 to 4, it is characterized in that:
The signal switching frequency of said setting is M*50Hz.
And/or
Said 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 is used for the setting signal switching frequency;
The pixel segmentation display unit; Be used for each pixel of dot matrix display screen spatially is divided into the M subpixels respectively; M is a positive integer, and periodically each pixel images displayed corresponding position corresponding with each sub-pixel on screen is shown according to the signal switching frequency of setting.
7. the device of raising dot matrix display screen resolution according to claim 6 is characterized in that, said pixel segmentation unit is controlled light valve, or movably perforate diaphragm array, or rotating perforate diaphragm array.
8. according to the device of claim 6 or 7 described raising dot matrix display screen resolution, it is characterized in that:
M=K*L or M=2*2, K, L be not for or not 1 positive integer simultaneously, and K representes a pixel double on line direction and is K times, and L representes a pixel is doubled L times on column direction;
And/or
The signal switching frequency of said setting is M*50Hz.
9. according to the device of any described raising dot matrix display screen resolution of claim 6 to 8, it is characterized in that said 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 like any described raising dot matrix display screen resolution of claim 6 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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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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| CN101086824A (en) * | 2006-06-09 | 2007-12-12 | 瀚宇彩晶股份有限公司 | Pixel structure of LCD and its driving method |
| US20090195491A1 (en) * | 2008-02-01 | 2009-08-06 | Nec Electronics Corporation | Multi-domain display device |
| JP2010107579A (en) * | 2008-10-28 | 2010-05-13 | Seiko Epson Corp | Driving method and electro-optical device |
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| US20040155895A1 (en) * | 2003-02-06 | 2004-08-12 | Chih-Chang Lai | Method and apparatus for imrpoving resolution of display unit |
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