CN102737614A - Method for realizing multi-layer image display on joint screen and joint screen - Google Patents
Method for realizing multi-layer image display on joint screen and joint screen Download PDFInfo
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Abstract
The invention discloses a method for realizing multi-layer image display on a joint screen and the joint screen. Joint units of the joint screen include a display and a plurality of video processing modules in cascade connection sequentially. A first video processing module selects two paths of signals from multiple paths of video signals to carry out image processing on the signals respectively, and then carry out superposition synthesis on the signals which are subjected to formatting processing and are outputted to a second video processing module. The second video processing module selects a video signal and another video signal outputted by the first video processing module from the plurality paths of video signals, after the other video signal is subjected to the image processing, the other video signal and the video signal received from the first video processing module are subjected to signal superposition synthesis, then are subjected to the formatting processing and are outputted to a next level of video processing module. And so on, after a last level of video processing module carries out formatting processing on the video signals which are subjected to the superposition synthesis, the signals are outputted to the display for displaying. According to the method and the joint screen, the superposition display of four or more images on the joint screen or opening four or more windows on the joint screen is realized.
Description
Technical field
The present invention relates to the mosaic screen display technique, relate in particular to and on mosaic screen, realize method and the mosaic screen thereof that multi-layer image shows.
Background technology
Fig. 1 shows the theory diagram of the video frequency processing chip 500 that existing mosaic screen adopted.As can be seen from the figure; This chip comprises decoding unit 51, front end selected cell 52, first passage 53, second channel 54, rear end selected cell 55, main window processing unit 56, subwindow processing unit 57 and merges processing unit 58; Support input, decoding, the signal of vision signals such as CVBS, VGA, DVI to select and processing, and final driving display 300 show.This video frequency processing chip 500 can be realized the vision signal processing of single CVBS, VGA or DVI and show; Perhaps with CVBS as one of them window; VGA or DVI as another window, finally are implemented in and show two image windows or two-layer image overlay on the display 300.Above-mentioned this implementation method can satisfy some primary demands of LCD display or the demonstration of DLP display; But three layers of demonstration of windowing or superpose with epigraph required, any vision signal then can't independently realize for existing market, must cooperate external image processor to realize.Yet, increase external image processor and mean and make total system become more complicated, can cause the loss of image, picture quality is shown descend.
Summary of the invention
Technical matters to be solved by this invention is to provide and can realizing three layers of method and mosaic screen thereof with uplifting window and image overlay demonstration more than three layers on the mosaic screen.
The method that realizes that on mosaic screen multi-layer image shows of the present invention is provided with a plurality of video processing modules of cascade successively at each concatenation unit of mosaic screen; First order video processing module in these a plurality of video processing modules is according to the steering order that receives from the outside; Stack is synthetic again after from the multi-channel video signal that receives, selecting the two-path video signal to carry out Flame Image Process respectively; Form the vision signal of two-way stack or two windows, export to second level video processing module after then the vision signal of this two-way stack or two windows being formatd processing; Second level video processing module is according to the steering order that receives from the outside; From the multi-channel video signal that receives, select vision signal and another road vision signal by the output of first order video processing module; This another road vision signal is carried out Flame Image Process; To pass through this another road vision signal and the vision signal that receives from first order video processing module after the Flame Image Process again, to carry out the signal stack synthetic; Form three tunnel stack or the vision signals of three windows, export to the next stage video processing module after then the vision signal of this three tunnel stack or three windows being formatd processing; And the like, the afterbody video processing module will superpose after vision signal after synthetic formats processing, export on the display of this mosaic screen to show.
The above-mentioned method that on mosaic screen, realizes the multi-layer image demonstration, wherein, first order video processing module is imported processing earlier, and then is carried out Flame Image Process respectively after from the multi-channel video signal that receives, selecting the two-path video signal; Remaining each video processing module is after the vision signal and another road vision signal from the multi-channel video signal that receives, selected by the output of upper level video processing module; Import processing to this another road vision signal and from the vision signal of upper level video processing module output earlier, and then selected this another road vision signal is carried out Flame Image Process; Described input processing comprises at least one in A/D conversion, position adjustment, the clock lock.
The above-mentioned method that on mosaic screen, realizes the multi-layer image demonstration; Wherein, the multi-channel video signal of reception comprises at least two kinds in CVBS, YC, YPbPr, VGA, HDMI, DVI, Display Port, RGB, YCbCr, LVDS, Streaming Media, the network video stream.
Mosaic screen of the present invention is characterized in, each concatenation unit of this mosaic screen comprises display and a plurality of video processing modules of cascade successively, and the afterbody video processing module in these a plurality of video processing modules is electrically connected with display.
In the above-mentioned mosaic screen, each video processing module comprises input processing and selected cell, main channel processing unit, subchannel processing unit, synthesizes processing unit, output format unit and output interface; Wherein:
Input is handled and selected cell; Vision signal to input is discerned; And according to the steering order that receives from the outside; From the multi-channel video signal that receives, select the two-path video signal, output to main channel processing unit and subchannel processing unit respectively after the selected vision signal of this two-way is imported processing;
The main channel processing unit receives road vision signal by input is handled and selected cell is imported;
The subchannel processing unit receives by another road vision signal that input is handled and selected cell is imported, and this another road vision signal is carried out exporting to synthetic processing unit after the Flame Image Process;
Synthetic processing unit superposes to the vision signal of the vision signal of main channel processing unit output and the output of subchannel processing unit and to export to the output format unit after synthesizing;
The output format unit is used for after converting preassigned video format to by the vision signal of synthesizing the processing unit input, exporting through output interface.
The present invention has realized any stack between identical or the number of different types signal; Realized that three layers of stack with epigraph show or open window more than three; Both save the cost of external image processor, reduced the Flame Image Process approach again simultaneously, improved picture quality.
Description of drawings
Fig. 1 is the theory diagram of the video frequency processing chip that adopted of existing mosaic screen.
Fig. 2 is the theory diagram of the concatenation unit of mosaic screen according to an embodiment of the invention.
Fig. 3 is the theory diagram of sub-video processing module and main video processing module according to an embodiment of the invention.
Fig. 4 is the connection synoptic diagram of large-screen splicing display system according to an embodiment of the invention.
Fig. 5 is the block diagram of the concatenation unit of mosaic screen according to an embodiment of the invention.
Fig. 6 is the synoptic diagram of the subtending port of mosaic screen according to an embodiment of the invention.
Fig. 7 is the display effect figure of mosaic screen according to an embodiment of the invention.
Fig. 8 is the connection synoptic diagram according to the large-screen splicing display system of further embodiment of this invention.
Fig. 9 is the block diagram according to the concatenation unit of the mosaic screen of further embodiment of this invention.
Figure 10 is the display effect figure according to the mosaic screen of further embodiment of this invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is made further description.
The method that on mosaic screen, realizes the multi-layer image demonstration of the present invention; Be provided with a plurality of video processing modules of cascade successively at each concatenation unit of mosaic screen, the afterbody video processing module in these a plurality of video processing modules is connected with the display of this concatenation unit.Wherein, a plurality of being meant more than two and two.First order video processing module in these a plurality of video processing modules is according to the steering order that receives from the outside; Stack is synthetic again after from the multi-channel video signal that receives, selecting the two-path video signal to carry out Flame Image Process respectively; Form the vision signal of two-way stack or two windows, export to second level video processing module after then the vision signal of this two-way stack or two windows being formatd processing.Second level video processing module is according to the steering order that receives from the outside; From the multi-channel video signal that receives, select vision signal and another road vision signal by the output of first order video processing module; This another road vision signal is carried out Flame Image Process; To pass through this another road vision signal and the vision signal that receives from first order video processing module after the Flame Image Process again, to carry out the signal stack synthetic; Form three tunnel stack or the vision signals of three windows, export to the next stage video processing module after then the vision signal of this three tunnel stack or three windows being formatd processing; And the like, the afterbody video processing module will superpose after vision signal after synthetic formats processing, export on the display of mosaic screen to show.Wherein, above-mentioned Flame Image Process comprises at least one in convergent-divergent, cutting, frame rate conversion, image quality improvement, brightness adjustment, contrast adjustment, saturation degree adjustment, gamma correction and the splicing, and image quality improvement comprises details enhancing, edge-smoothing etc.
In the method, preferably, first order video processing module is imported processing earlier, and then is carried out Flame Image Process respectively after from the multi-channel video signal that receives, selecting the two-path video signal; Remaining each video processing module is after the vision signal and another road vision signal from the multi-channel video signal that receives, selected by the output of upper level video processing module; Import processing to this another road vision signal and from the vision signal of upper level video processing module output earlier, and then selected this another road vision signal is carried out Flame Image Process; Described input processing comprises at least one in A/D conversion, position adjustment, the clock lock.
Fig. 2 shows the theory diagram of the concatenation unit of the mosaic screen of realizing said method.As shown in Figure 2, this successively a plurality of video processing modules of cascade comprise that a main video processing module 200 and at least one sub-video handle mould 100, main video processing module 200 is electrically connected with display 300 as the afterbody in a plurality of video processing modules.Display 300 can be LCD display, light-emitting diode display, DLP display or plasma display.
Fig. 3 shows the theory diagram of sub-video processing module 100 and main video processing module 200.Sub-video processing module 100 includes with main video processing module 200: input processing and selected cell 12, main channel processing unit 13, subchannel processing unit 14, synthetic processing unit 15, output format unit 16 and output interface 17.In embodiment illustrated in fig. 3; Can support CVBS, YC, YPbPr in order to make video processing module; VGA, HDMI, DVI, Display Port, Streaming Media (compressed digit signals; Comprise mepg2, mpeg4, h.264, various forms such as avs), network video stream (through the compressing video frequency flow of Network Transmission), RGB, YcbCr, the input of LVDS signal, each sub-video processing module 100 and main Video processing mould 200 are provided with CVBS and YC decoding unit 11a, HDMI and DVI decoding unit 11b, LVDS decoding unit 11c, Display port unwrapper unit 11d, Streaming Media decoding unit 11e and Internet video unwrapper unit 11f.The output terminal of CVBS and YC decoding unit 11a, HDMI and DVI decoding unit 11b, LVDS decoding unit 11c, Display port unwrapper unit 11d, Streaming Media decoding unit 11e and Internet video unwrapper unit 11f all handles with input and the input end of selected cell 12 is electrically connected.Being provided with of said units can change according to actual needs, for example, under the situation that does not need the network video stream input, Internet video bag unwrapper unit 11e just can be set.
Input is handled and the vision signal of 12 pairs of inputs of selected cell is discerned; And according to the steering order that receives from the outside; From the multi-channel video signal that receives, select the two-path video signal, output to main channel processing unit 13 and subchannel processing unit 14 respectively after the selected vision signal of this two-way is imported processing.Above-mentioned identification comprises that whether the signal of identification input is the form of useful signal, this input signal etc.Above-mentioned input processing comprises at least one in A/D conversion, position adjustment, the clock lock.If the two-path video signal imitation signal of selecting just need not carry out the A/D conversion.Main channel processing unit 13 receives road vision signal by input is handled and selected cell 12 is imported.Subchannel processing unit 14 receives another road vision signal by input processing and selected cell input 12, and this another road vision signal is carried out exporting to synthetic processing unit 15 after the Flame Image Process.The vision signal of the vision signal of synthetic 15 pairs of main channel processing units of processing unit, 13 outputs and 14 outputs of subchannel processing unit is exported to output format unit 16 after superposeing and synthesizing.Output format unit 16 will be exported through output interface 17 after will being converted to preassigned video format by the vision signal of synthetic processing unit 15 inputs.
The output interface 17 of sub-video processing module 100 can be any one in VGA interface, YPbPr interface, HDMI interface, DVI interface, Display Port interface, RGB digital interface, LVDS differential digital interface, the YCbCr interface, and the output interface 17 of main video processing module 200 can be in VGA interface, DVI interface, RGB digital interface, the LVDS differential digital interface any one.
Each sub-video processing module 100 and main video processing module 200 all can be handled the two-path video signal simultaneously.The input processing of first sub-video processing module and selected cell 12 are according to the steering order that receives from the outside; From through CVBS and YC signal, HDMI and DVI signal, the LVDS signal of decoding, through the digital stream media compression signal that unpacking the Display port signal of processing, the network video stream that unpacks, decoding and YPbPr signal, VGA signal, rgb signal, the YCbCr signal; After selecting the two-path video signal to import processing, output to main channel processing unit 13 and subchannel processing unit 14 respectively.After the vision signal of main channel processing unit 13 and 14 pairs of inputs of subchannel processing unit is carried out Flame Image Process respectively, export to synthetic processing unit 15.Above-mentioned Flame Image Process comprises at least one in convergent-divergent, cutting, frame rate conversion, image quality improvement, brightness adjustment, contrast adjustment, saturation degree adjustment, gamma correction and the splicing.The vision signal of the vision signal of synthetic 15 pairs of main channel processing units of processing unit, 13 outputs and 14 outputs of subchannel processing unit superposes synthetic, forms the vision signal of two-way stack or two windows.Output format unit 16 will output to next stage sub-video processing module 100 or main video processing module 200 (if having only a sub-video processing module 100) from output interface 17 after will formaing processing by the vision signal of the two-way stack of synthesizing processing unit 15 outputs or two windows.Next stage sub-video processing module 100 (N level sub-video processing module 100 in other words); The vision signal that selection upper level sub-video processing module 100 is exported is as the signal of input main channel processing unit 13, and the vision signal of these upper level sub-video processing module 100 outputs is exported to main channel processing unit 13 after handling through the input of importing processing and selected cell 12.The input selection of the subchannel processing unit 14 of this N level sub-video processing module 100 is identical with the processing of first order sub-video processing module 100; Road signal in the digital stream media compression signal of the CVBS that i.e. selection process is decoded and YC, HDMI and DVI signal, LVDS signal, the Display port signal through unpacking, the network video stream that unpacks, decoding and YPbPr signal, VGA signal, rgb signal, the YCbCr signal is as signal source, through exporting to subchannel processing unit 14 after the input processing of importing processing and selected cell 12.After 14 pairs of road vision signals from input processing and selected cell 12 receptions of subchannel processing unit are carried out Flame Image Process; Superpose synthetic with the outputting video signal of the main channel processing unit 13 of doing any processing without main channel processing unit 13 at synthetic processing unit 15; Synthetic like this signal just is made up of the range upon range of signal that adds of N+1; N+1 video window perhaps arranged, and the synthetic signal of this stack is handled the back from output interface 17 outputs through the format of output format unit 16.The Flame Image Process that above-mentioned subchannel processing unit 14 is done comprises at least one in convergent-divergent, cutting, frame rate conversion, image quality improvement, brightness adjustment, contrast adjustment, saturation degree adjustment, gamma correction and the splicing.Be input to the processing of the vision signal of concatenation unit through N level sub-video processing module 100, final cascade outputs to main video processing module 200.Input selection, input processing and the image processing process of main video processing module 200 is identical with all the other the sub-video processing modules except that first order sub-video processing module; Different is that the video output of synthesizing no longer is cascade output, but directly outputs to display 300.Like this; Are the synthetic signals of N+1+1 road video source in display 300 images displayed finally, this N+1+1 road video source can superpose mutually on display, the demonstration of can windowing separately; Can be presented at separately on the screen; Also can stride screen demonstration or roaming, each road signal is independent of each other and does not disturb mutually, and is independent fully.
Fig. 4 to Fig. 7 shows the application example of a display image on the mosaic screen with four concatenation units 3.As shown in Figure 4,32 tunnel signal sources 1 comprise 8 road DVI, 8 road YPbPr, 8 road CVBS and 8 road VGA, and these signal source outputs are connected to 32 * 32 hybrid matrix 2.This matrix switcher 2 is supported 32 tunnel inputs and 32 tunnel outputs (8 road DVI, 8 road YPbPr, 8 road CVBS and 8 road VGA), and 32 tunnel outputs are connected respectively to the video input interface of four concatenation units 31,32,33,34.Four concatenation units 31,32,33,34 all are made up of a sub-video processing module 100 and a main video processing module 200, and are as shown in Figure 5.Through the selection of system master device, mosaic screen 3 current video CVBS1, CVBS2, DVI1 three road signals of having shown, on three road signals stack display splicing screen 3, as shown in Figure 7.Master control set can adopt a computing machine.
In total system; At first select CVBS1 and CVBS2 to output to the CVBS input end of each concatenation unit sub-video processing module 100 and main video processing module 200 respectively through master control set control hybrid matrix 2; Select DVI1 to output to the DVI input port of the sub-video processing module 100 of each concatenation unit respectively; The input signal source of such four concatenation units all is the same; The CVBS input of sub-video processing module 100 is video source CVBS1, and the DVI input is video source DVI1, and the CVBS input of main video processing module 200 is video source CVBS2.With concatenation unit 31 is example; DVI1 as the source, main channel of sub-video processing module 100 by cutting; Four/the part that has kept the upper left corner is amplified to the resolution of whole screen; Synthesized the digital rgb input port that outputs to main video processing module 200 by the CVBS1 of cutting (being zoomed to the size that the user selects) then and equally; CVBS2 has been kept the upper left corner by main video processing module 200 cuttings, and the size that is zoomed to user's selection is synthesized output then and from the picture signal stack of sub-video processing module 100 inputs, finally exports unit 31 as shown in Figure 7.Other each concatenation units 32,33 and 34 processing procedure also are similar.
As shown in Figure 6; Sub-video processing module 100 two superimposed picture signal after treatment is the YCbCr422 form, because the output connection adopts RGB24BIT444 to connect, before output, arrives the color space conversion of RGB44 earlier through YCbCr422; While growth data scope; (for the 8BIT data Y is 16-235, and CbCr is 160-240, all expands to RGB data area 0-255); RGB data through after the conversion are exported from digital port with the 24RGB form, and HS is the line synchronizing signal of separating, and VS is the field sync signal of separating; DE is the data effective index signals; CLK is a clock signal, R0-R7, G0-G7; B0-B7 is respectively the RGB data 8BIT data of separating, and whole data layout meets the BT709 agreement.
Fig. 8 to Figure 10 shows the application example of another display image on the mosaic screen with four concatenation units 3.In this example, as shown in Figure 8, except a hybrid matrix 2 that is provided with 32 tunnel inputs and 32 tunnel outputs, also be provided with 8 oral sexes of supporting 8 road network networks to import in addition and change planes 4.Four concatenation units 31,32,33,34 all are made up of two sub-video processing modules 100 and a main video processing module 200, and are as shown in Figure 9, handle when therefore can realize four road signals and demonstration; Adopt digital YC to connect (YCBCR signal) between the module.Through the selection of system master device, mosaic screen 3 current video CVBS1, CVBS2, DVI1, Streaming Media 1 four road signals of having shown of system, shown in figure 10, this four road signal has plenty of independent stack and is presented on the single screen, and what have then is to stride screen to show; Has plenty of demonstration of independently windowing (screen is not striden in stack yet).In the example depicted in fig. 10, on four concatenation units, selected the input of four road same signals to show that in fact four concatenation units also can select four road different signals on display separately, to show.
Can find out from above-mentioned instance; The present invention has realized between the same signal, any stack between the unlike signal, and one of them instance has been realized the demonstration of three tomographic images or opened three windows that another instance has been realized the demonstration of four tomographic images or opened four windows; Both saved the cost that adds external processor; Simultaneously reduced the Flame Image Process approach again, improved picture quality, the system that makes simultaneously connects and control becomes simpler.
Claims (10)
1. on mosaic screen, realize the method that multi-layer image shows, it is characterized in that, a plurality of video processing modules of cascade successively are set at each concatenation unit of this mosaic screen; First order video processing module in these a plurality of video processing modules is according to the steering order that receives from the outside; Stack is synthetic again after from the multi-channel video signal that receives, selecting the two-path video signal to carry out Flame Image Process respectively; Form the vision signal of two-way stack or two windows, export to second level video processing module after then the vision signal of this two-way stack or two windows being formatd processing; Second level video processing module is according to the steering order that receives from the outside; From the multi-channel video signal that receives, select vision signal and another road vision signal by the output of first order video processing module; This another road vision signal is carried out Flame Image Process; To pass through this another road vision signal and the vision signal that receives from first order video processing module after the Flame Image Process again, to carry out the signal stack synthetic; Form three tunnel stack or the vision signals of three windows, export to the next stage video processing module after then the vision signal of this three tunnel stack or three windows being formatd processing; And the like, the afterbody video processing module will superpose after vision signal after synthetic formats processing, export on the display of this mosaic screen to show.
2. the method that on mosaic screen, realizes the multi-layer image demonstration as claimed in claim 1; It is characterized in that; Described first order video processing module is imported processing earlier, and then is carried out Flame Image Process respectively after from the multi-channel video signal that receives, selecting the two-path video signal;
Remaining each video processing module is after the vision signal and another road vision signal from the multi-channel video signal that receives, selected by the output of upper level video processing module; Import processing to this another road vision signal and from the vision signal of upper level video processing module output earlier, and then selected this another road vision signal is carried out Flame Image Process;
Described input processing comprises at least one in A/D conversion, position adjustment, the clock lock.
3. the method that on mosaic screen, realizes the multi-layer image demonstration as claimed in claim 1; It is characterized in that described Flame Image Process comprises at least one in convergent-divergent, cutting, frame rate conversion, image quality improvement, brightness adjustment, contrast adjustment, saturation degree adjustment, gamma correction and the splicing.
4. the method that on mosaic screen, realizes the multi-layer image demonstration as claimed in claim 1; It is characterized in that the multi-channel video signal of described reception comprises at least two kinds in CVBS, YC, YPbPr, VGA, HDMI, DVI, Display Port, RGB, YCbCr, LVDS, Streaming Media, the network video stream.
5. a mosaic screen is characterized in that, each concatenation unit of said mosaic screen comprises display and a plurality of video processing modules of cascade successively, and the afterbody video processing module in these a plurality of video processing modules is electrically connected with said display.
6. mosaic screen as claimed in claim 5 is characterized in that, each said video processing module comprises: input processing and selected cell, main channel processing unit, subchannel processing unit, synthetic processing unit, output format unit and output interface; Wherein:
Input is handled and selected cell; Vision signal to input is discerned; And according to the steering order that receives from the outside; From the multi-channel video signal that receives, select the two-path video signal, output to said main channel processing unit and subchannel processing unit respectively after the selected vision signal of this two-way is imported processing;
The main channel processing unit receives road vision signal by said input processing and selected cell input;
The subchannel processing unit receives another road vision signal by said input processing and selected cell input, and this another road vision signal is carried out exporting to said synthetic processing unit after the Flame Image Process;
Synthetic processing unit superposes to the vision signal of the vision signal of said main channel processing unit output and the output of subchannel processing unit and to export to said output format unit after synthesizing;
The output format unit is used for the vision signal by said synthetic processing unit input is converted to behind the preassigned video format through said output interface output.
7. mosaic screen as claimed in claim 6 is characterized in that, described input processing comprises at least one in A/D conversion, position adjustment, the clock lock.
8. mosaic screen as claimed in claim 6 is characterized in that, described Flame Image Process comprises at least one in convergent-divergent, cutting, frame rate conversion, image quality improvement, brightness adjustment, contrast adjustment, saturation degree adjustment, gamma correction and the splicing.
9. mosaic screen as claimed in claim 6 is characterized in that, described output interface is any one in VGA interface, DVI interface, RGB digital interface, the LVDS differential digital interface.
10. mosaic screen as claimed in claim 6; It is characterized in that each video processing module of this mosaic screen also comprises CVBS and YC decoding unit, HDMI and DVI decoding unit, LVDS decoding unit, Display port unwrapper unit, Streaming Media decoding unit and Internet video unwrapper unit; The output terminal of described CVBS and YC decoding unit, HDMI and DVI decoding unit, LVDS decoding unit, Display port unwrapper unit, Streaming Media decoding unit and Internet video unwrapper unit all is electrically connected with the input end of said input processing and selected cell.
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