CN105913794A - LED virtual display model - Google Patents
LED virtual display model Download PDFInfo
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- CN105913794A CN105913794A CN201610053476.0A CN201610053476A CN105913794A CN 105913794 A CN105913794 A CN 105913794A CN 201610053476 A CN201610053476 A CN 201610053476A CN 105913794 A CN105913794 A CN 105913794A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention generally relates to optical modeling and especially relates to an LED virtual display model, for solving the problem of adaptability of a conventional virtual LED display screen modeling method to green, red and blue colors of LED pixel points in the prior art and the problem of gray-scale compromise of a time-division multiplexing technology. The LED virtual display model provided by the invention comprises a modeling method and a control method. In the modeling method, a screen is divided into a plurality of triangles by taking each sub-pixel as a summit, and virtual pixel points are disposed at the center of each triangle. In the control method, a mask layer is created by use of a smooth filter, according to an actual screen sequence, color values of corresponding points are extracted, if the actual screen is arranged in the same way as the modeling method, values of red sub-pixels are extracted at a (1,1) point of an image as the value of R, values of green sub-pixels are extracted at a (1,2) point as the value of G, and thus a new one-dimensional matrix can be re-gained through extracted values of various sub-pixels according to the sequence.
Description
Technical field
This invention relates generally to a kind of optical modeling, and more specifically it relates to a kind of virtual display model of LED.
Background technology
Human eye when observing scene, the incoming cerebral nerve of optical signal, need to terminate through one of short duration period, the effect of light
After, visual image disappears the most immediately, and to continue the time of 0.1 second, and this character of human eye is referred to as that " vision of eyes is temporary
Stay ".The displaying principle of LED display mainly make use of the persistence of vision of human eye: LED display refreshed 60 times in 1 second just may be used
An a series of sudden strain of a muscle, continuous print picture is formed in human eye.Each LED lamp bead is subdivided into lighting during refreshing every time
With extinguish two stages, due to one time, refresh interval is the shortest, only has light and shade sense at this refresh process of human eye.Aobvious
During showing, LED lamp bead adjusting brightness that color is differed by multiple colors and formed.General each color is by the data control of 8bit
System, it is possible to achieve 256 kinds of different bright-dark degrees, these data are also called 8bit gray scale.Mixing of the redgreenblue of 8bit gray scale
Close and just can form general 1600 million colors, this color gamut that can identify beyond human eye.Therefore, general display is adopted
Be the display gray scale of bit wide of each color 8bit, in display, each pixel is by three RGB (RGB) sub-pixs
Composition, each sub-pix is then made up of the LED of three different colours.
The virtual display of LED is a kind of technology being controlled virtual LED display screen by special control device, makes display screen
The resolution that can show exceedes at least resolution.The image-forming principle of virtual LED display screen is substantially the same with LED display principle,
All form, by the harmonious colours of RGB sub-pix, the image that colour developing final composition one width is complete.It is different from common LED display screen
The condensed state of middle pixel, the pixel in virtual LED display screen is dispersed, and the fluorescent tube of the most each color is equally distributed,
Eye recognition cannot be used in the ordinary course of things, be i.e. referred to as " virtual pixel ".The most equally distributed method is primarily to Asia
The multiplexing of pixel a, say, that sub-pix is the most relevant with the formation of multiple acquaintanceships.Therefore, show compared to common LED
The sub-pix of screen is only involved in the formation of single pixel, use sub-pix multiplex technique virtual LED display screen can ratio traditional
LED display shows more pixel, thus increases the resolution of screen.
Existing virtual Display Technique is the arrangement mode that two red-green are blue, and each virtual pixel contains 4 sub-pixs, its
The division of pixel is represented by Fig. 1.R as seen from the figure22With take part in P11、P12、P21And P22The imaging of four points, so R22Participate in
The composition of 4 pixels, i.e. R22Multiplexing number be four times.Therefore, the display of the virtual Display Technique of such multiplexing is used
Screen can reach four times of common LED display resolution.Owing to colour developing principle is different, accordingly, the control of virtual LED display screen
Method is also different with general LED display.The widest control method that virtual LED display screen uses at present is that timesharing is multiple
Control method.Assume that piece image comprises 4 pixels P11、P12、P21And P22, then when common LED display is at T
Between show this 4 pixels in section simultaneously, and the needs that virtual LED display screen is as shown in Figure 1 show P in 0-1/4T11, 1/
Display P in 4T-2/4T12, display P in 2/4T-3/4T21, display P in 3/4T-T22, when T is infinitely small, due to the vision of human eye
Persist, it appears that just as being shown that 4 points.
Although time-sharing multiplex is widely used in virtual Display Technique field, but there is an obvious fraud in this method
End.Under the conditions of comparable bandwidths, because the gray scale of each fluorescent tube is fixed, after average, the actual face shown by this method
Color shade becomes original 1/4, and uses the control mode of time-sharing multiplex to increase the demand to hardware so that device used
Part operating frequency is higher, increases the unstability of hardware cost and system.Due to the progress of technology and processing technology
Promoting, the brightness of red LED fluorescent tube has reached and the level of bluish-green LED equivalent brightness, so the one of present LED display
Individual pixel is made up of a red-green-blue LED lamp tube, and virtual LED display screen changes the most accordingly.Traditional virtual LED shows
The modeling method of display screen is just no longer appropriate for the virtual LED display screen of present this arrangement mode, and time-sharing multiplex exists substantially
Drawback, so needing to propose a kind of modeling method being suitable for current virtual LED display screen and control method.
Summary of the invention
In order to solve modeling method and the current LED pixel point one red-green-blue adaptation of existing virtual LED display screen
Problem and the time-sharing multiplexing technology compromise problem to gray scale, it is an object of the invention to provide a kind of virtual display model of LED, its bag
Include:
A kind of modeling method, is divided into countless triangle with each sub-pix for summit screen, and virtual representation vegetarian refreshments is positioned at
Each circumcentre of a triangle；
A kind of control method: create the numerical digit mask of 3 × 3, according to the sequence of actual screen, the number of colours of corresponding point
Value extracts, if the screen arrangement of reality arranges as above-mentioned modeling method, then in (1,1) of image, point extracts
The value of red sub-pix is as the value of R, and at (1,2) point, the value of extraction green sub-pixels is as the value of G, carries the most in order
The value of the various sub-pixs taken out just can retrieve a new one-dimensional matrix.
Modeling method mentioned above, owing to virtual point is equal to the distance of each LED lamp tube, so every in three primary colours
It is uneven that individual color will not produce in colour mixture because distance is different, and display screen triangle uniform on the whole divides
Cloth, it is possible to reach the equally distributed requirement of virtual representation vegetarian refreshments.
3 × 3 described masks are created by smoothing filter, the second position of its first row and the 3rd position and the second row
3rd is set to 1, and remaining position is set to 0.
When virtual LED display screen actual displayed, can virtual LED display screen regard as one " lacuna " LED show
Display screen, if showing a pixel of common I ED with a number list, then each point can be expressed as (R, G, B) its
Middle R, G, B are certain number of 0～255.But owing to, in virtual LED display screen, each pixel is by monochromatic LED lamp tube group
Becoming, it is possible to can use (R, 0,0) by redness, green can use (0, G, 0), blueness can represent with (0,0, B).
The structure of virtual display is that the brightness of a sub-pix needs to share to adjacent three pixel.Therefore this sub-picture
The brightness value of element is relevant to the brightness of adjacent three pixels in the video of source.In Digital Image Processing, it is right to need
The area of space of image converts, owing to the present invention uses rounded projections arranged mode mentioned above, so having only to use
To three pixels in the mask upper right corner, and each pixel weights in sub-pix calculates are equal.
Owing to control method of the present invention becomes an one-dimensional matrix image array from original three-dimensional matrice, so exist
Just a sub-pix can be represented by more data, it is provided that higher tonal gradation, so eliminating one under identical data size
As the normalization coefficient that used when using mask, the most each sub-pix is made up of the data of 10bit, the most each sub-pix
Can there be 2 kinds of different brightness in theory.But owing to being that the value of sub-pix is directly added, thus the gray scale of each color be 3 ×
28, the actual grey of so average rear each virtual pixel keeps consistent with the tonal gradation of former video.But due to sub-pix
High-high brightness constant, sub-pix the virtual pixel realized will be dimmed, and high-high brightness is common LED display screen in theory
1/3。
The virtual display model of LED of the present invention advantage compared with prior art is:
The virtual display model of LED the most of the present invention can provide under identical volume LED lamp bead quantity and show than common LED
Show higher resolution, which decrease the cost of screen, and under identical fluorescent tube density, be capable of the image of more density
Display, shows more content under limited space conditions.
The virtual display model of LED the most of the present invention reduces bandwidth and hsrdware requirements, reduces system complexity.
The virtual display model of LED the most of the present invention provides and shows the higher tonal gradation that obtains than traditional virtual so that
Display effect is close to common LED display screen.
Accompanying drawing explanation
The following is the cutline of accompanying drawing of the present invention, the accompanying drawing that the present invention uses is only exemplary, it is impossible to be used for solving
Release protection scope of the present invention.
Fig. 1 is the modeling method of traditional virtual display screen；
Fig. 2 is the modeling method of virtual display of the present invention；
Fig. 3 is the mask used in the control method of virtual display of the present invention；With
Fig. 4 is image procossing and the control system of embodiment 1 employing.
Detailed description of the invention
Embodiment 1
The LCD display that one Daepori is logical, the high density virtual LED display screen of, its resolution is 192 × 192, its point
Spacing is P1.25, and it uses equivalence 8bit tonal gradation.One video processor realizing virtual reality, at image used
Reason and control system are as shown in Figure 4.
Choose a pictures as display image, show on an lcd display, then use MATLAB to image according to figure
Image is processed by the mask of 3, then each pixel is being processed according to the control method of the present invention, i.e. according to reality
The sequence of screen, extracts the color data of corresponding point, if the screen arrangement of reality arranges as Fig. 2, that
Extract the value value as R of red sub-pix at (1,1) of image point, at (1,2) point, extract the value of green sub-pixels
As the value of G, the value of the various sub-pixs extracted the most in order just can retrieve a new one-dimensional matrix,
After obtain a new picture.
With same pictures as display image, high density virtual LED display screen shows, then uses MATLAB pair
Image is processed by image according to the mask of Fig. 3, then each pixel is being processed according to the control method of the present invention,
I.e. according to the sequence of actual screen, the color data of corresponding point is extracted, if that of the screen arrangement of reality such as Fig. 2
Sample arranges, then extract the value value as R of red sub-pix at (1,1) of image point, extracts green sub-at (1,2) point
The value of pixel just can retrieve one new one as the value of G, the value of the various sub-pixs extracted the most in order
Dimension matrix, finally obtains the picture of another Zhang Xin.
By three pictures before and after relative analysis, the data of table 1 can be obtained.
Although the principle of the present invention has had specific descriptions herein, it will be appreciated by those of skill in the art that this
Individual description is carried out the most by way of example, and not as the restriction about the scope of the present invention.Except shown herein
Outside the exemplary embodiment described, within the scope of the invention by amendment and the replacement of those of ordinary skill in the art
Other embodiments, be regarded as within the scope of the invention.
Claims (3)
1. the virtual display model of LED, comprising:
A kind of modeling method, is divided into countless triangle with each sub-pix for summit screen, and virtual representation vegetarian refreshments is positioned at each
Circumcentre of a triangle；
A kind of control method: create the numerical digit mask of 3 × 3, extracts the color data of corresponding point, if the screen of reality
Curtain arrangement arranges as above-mentioned modeling method, then in (1,1) of image, point extracts the value of red sub-pix as R
Value, at (1,2) point, extract the value of green sub-pixels as the value of G, the various sub-pixs extracted the most in order
Value just can retrieve a new one-dimensional matrix.
The virtual display model of LED the most according to claim 1, it is characterised in that the first row of 3 × 3 described numerical digit masks
The second position and the 3rd position and the second row the 3rd be set to 1, remaining position is set to 0.
The virtual display model of LED the most according to claim 1, it is characterised in that 3 × 3 described numerical digit masks are by smoothing filter
Ripple device creates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610053476.0A CN105913794A (en) | 2016-01-26 | 2016-01-26 | LED virtual display model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610053476.0A CN105913794A (en) | 2016-01-26 | 2016-01-26 | LED virtual display model |
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| Publication Number | Publication Date |
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| CN105913794A true CN105913794A (en) | 2016-08-31 |
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| CN201610053476.0A Pending CN105913794A (en) | 2016-01-26 | 2016-01-26 | LED virtual display model |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448476A (en) * | 2016-07-28 | 2017-02-22 | 刘万斌 | Commercial induction cooker display screen interaction display method |
| CN108230927A (en) * | 2017-12-29 | 2018-06-29 | 西安智盛锐芯半导体科技有限公司 | Virtual LED display module and 3 times of frequency displaying methods based on three vitta shape LED chips |
| CN111164531A (en) * | 2017-08-07 | 2020-05-15 | 欧姆尼消费品有限责任公司 | System, method and apparatus for surveillance drone |
| CN113661535A (en) * | 2019-04-08 | 2021-11-16 | 欧司朗光电半导体有限公司 | Device for a display device, display device and method for operating a display device |
| CN114093312A (en) * | 2021-11-26 | 2022-02-25 | 卡莱特云科技股份有限公司 | Display data generation method and device based on virtual pixels |
| CN115132133A (en) * | 2022-08-31 | 2022-09-30 | 长春希达电子技术有限公司 | Data transmission system, control system, method and device of pixel multiplication display screen |
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| US20080225143A1 (en) * | 2006-04-13 | 2008-09-18 | Daktronics, Inc. | Pixel interleaving configurations for use in high definition electronic sign displays |
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| CN202049688U (en) * | 2011-04-15 | 2011-11-23 | 中山市积目科技有限公司 | Novel triangular virtual pixel LED module |
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| CN1858827A (en) * | 2005-12-17 | 2006-11-08 | 陈祖良 | Method for realizing full color virtual piexel screen from monochromatic light emitter and color display screen |
| US20080225143A1 (en) * | 2006-04-13 | 2008-09-18 | Daktronics, Inc. | Pixel interleaving configurations for use in high definition electronic sign displays |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448476A (en) * | 2016-07-28 | 2017-02-22 | 刘万斌 | Commercial induction cooker display screen interaction display method |
| CN111164531A (en) * | 2017-08-07 | 2020-05-15 | 欧姆尼消费品有限责任公司 | System, method and apparatus for surveillance drone |
| CN108230927A (en) * | 2017-12-29 | 2018-06-29 | 西安智盛锐芯半导体科技有限公司 | Virtual LED display module and 3 times of frequency displaying methods based on three vitta shape LED chips |
| CN113661535A (en) * | 2019-04-08 | 2021-11-16 | 欧司朗光电半导体有限公司 | Device for a display device, display device and method for operating a display device |
| CN114093312A (en) * | 2021-11-26 | 2022-02-25 | 卡莱特云科技股份有限公司 | Display data generation method and device based on virtual pixels |
| CN115132133A (en) * | 2022-08-31 | 2022-09-30 | 长春希达电子技术有限公司 | Data transmission system, control system, method and device of pixel multiplication display screen |
| CN115132133B (en) * | 2022-08-31 | 2022-11-18 | 长春希达电子技术有限公司 | Data transmission system, control system, method and device of pixel multiplication display screen |
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