In the prior art, it shows, is generallyd use such as under type for realization mosaic screen:
Conventional method one: being only used only PC as signal source, particular design software tool needed to divide picture in PC, specialIt is long to determine the software tool design cycle, and professional is needed to operate；And it requires video card to have multiple display interfaces and is connected to different showShow on device, PC requires high, and the video card cost of especial operation is big, reuses Serial Port Line and connects every display and says the word, and uses a plurality of stringMouth line sends order, and assembling is complicated, the fixed PC of signal source form, and the tool software design cycle is long；
Conventional method two: after arbitrary signal generator exports audio-video signal, the matrix specially designed is added and divides and divides to doMatch, method is complicated, and matrix design cost and material cost are big, and the design cycle is long.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the deficiencies of the prior art, providing a kind of without to video dataPicture segmentation is carried out, while assembling process is simple, saves wire rod, the splicing based on DP interface and daisy chain function of saving costShield implementation method.
In order to solve the above technical problems, the present invention adopts the following technical scheme that.
A kind of mosaic screen implementation method based on DP interface and daisy chain function, this method comprises the following steps: step S1,Prepare more and supports DP interface and the display with daisy chain function；The DP interface of more displays is passed through DP by step S2Wire rod is sequentially connected in series；Signal source is connected to the DP interface of any display using DP wire rod by step S3；Step S4, Duo TaixianShow that device obtains the video data of signal source output respectively；Step S5 is arranged required for each display by the OSD menu of displayThe picture area of display；Step S6, display capture according to the setting in step S5 and show the respective area of the video dataDomain, and then realize multi-display split screen display available.
Preferably, in the step S4, the video data simultaneous transmission at most platform display of the signal source output.
Preferably, in the step S1, prepare 4 and support DP interface and the display with daisy chain function.
Preferably, 4 displays are respectively used to display upper left, lower-left, upper right and the region of bottom right 4.
Preferably, audio data is also exported while the signal source output video data.
In mosaic screen implementation method disclosed by the invention based on DP interface and daisy chain function, there is DP interface and chrysanthemumThe solution chip of chain function is more commonly used in display product, and not with the chip price difference without daisychain functionGreatly, while to signal source form no requirement (NR), package assembly straightforward, compared to saving serial ports wire rod, phase for conventional method oneFor conventional method two, it is not necessarily to design matrix unit, carries out picture segmentation without to video data, causes design, productionCost is lower, and volume is more compact, has better meet application demand.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawings and examples.
The mosaic screen implementation method based on DP interface and daisy chain function that the invention discloses a kind of, in conjunction with Fig. 1 and Fig. 2 instituteShow, this method comprises the following steps:
Step S1 prepares more and supports DP interface and the display with daisy chain function；
The DP interface of more displays is sequentially connected in series by step S2 by DP wire rod；
Signal source is connected to the DP interface of any display using DP wire rod by step S3；
Step S4, more displays obtain the video data of signal source output respectively；
Step S5, picture area to be shown needed for each display is set by the OSD menu of display；
Step S6, display capture according to the setting in step S5 and show the corresponding region of the video data, in turnRealize multi-display split screen display available.
In the above method, the solution chip with DP interface and daisy chain function is more commonly used in display product, andIt is little with the chip price difference without daisychain function, while to signal source form no requirement (NR), package assembly is concisely easyUnderstand, compared to serial ports wire rod is saved for conventional method one, compared to for conventional method two, is not necessarily to design matrix unit, withoutPicture segmentation is carried out to video data, causes design, production cost lower, volume is more compact, and having better meet to apply needsIt asks.
As a preferred method, in the step S4, the video data simultaneous transmission at most platform of the signal source outputDisplay.In practical application, all DP wire rods are all the identical signals of transmission, and every display captures different displays according to settingPart, in time delay effect be better than traditional software processing deposit the method that frame divides again, there is no picture tearing the case where.
In the present embodiment, in the step S1, prepares 4 and support DP interface and the display with daisy chain function.IntoOne step, 4 displays are respectively used to display upper left, lower-left, upper right and the region of bottom right 4.
The present embodiment provides the Source exported containing DP 1, and be suitable as splicing (Rimless or narrow frame) contains DPThe display of daisychain function 4,4, DP wire rod.Signal source submitting commonly needs picture to be shown, and connection of DP line is taken officeIt anticipates a display, reuses other 3 DP lines and concatenate other displays, when display is set as needed in display OSDCorresponding display portion: upper left, lower-left, upper right, bottom right, display software is according to the corresponding portion that capturing visual is arranged, to reachTo the effect of split screen display available.
In order to guarantee audio-visual synchronization, in the present embodiment, signal source output video data while, also exports audioData.
In mosaic screen implementation method disclosed by the invention based on DP interface and daisy chain function, any DP signal source is sent outPicture to be shown is commonly needed, connection of DP line reuses other 3 DP lines and arbitrarily concatenate other displays to any one displayDevice is not necessarily to particular order, it is only necessary to when showing on corresponding assembled position, set according to demand in corresponding display OSDRequired display portion: upper left, lower-left, upper right, bottom right is set, the corresponding portion of capturing visual is arranged according to OSD for display softwarePoint, to achieve the effect that split screen display available.
The above is preferred embodiments of the present invention, is not intended to restrict the invention, all in technology model of the inventionInterior done modification, equivalent replacement or improvement etc. are enclosed, should be included in the range of of the invention protect.