CN201716969U

CN201716969U - Multi-output video vertical expansion cutting device

Info

Publication number: CN201716969U
Application number: CN2010201351036U
Authority: CN
Inventors: 张士勇
Original assignee: SHANGHAI MVIEWTECH CO Ltd
Current assignee: SHANGHAI MVIEWTECH CO Ltd
Priority date: 2010-03-18
Filing date: 2010-03-18
Publication date: 2011-01-19
Anticipated expiration: 2020-03-18

Abstract

The utility model relates to a multi-output video vertical expansion cutting device, which is connected with a computer and a display device. The device comprises at least one video input interface with ultrahigh resolution input capacity, a programmable EDID circuit connected with the video input interface, an input video frame buffer circuit connected with the output end of the video input interface, an output video frame synchronous generation circuit connected with the output end of the input video frame buffer circuit, and a plurality of video output interfaces connected with the output end of the output video frame synchronous generation circuit. The multi-output video vertical expansion cutting device provided by the utility model can achieve the effect of expanding a single high-resolution input into vertical longitudinal multi-screen large pictures, and has low price. The device achieves real vertical high-resolution multi-screen high-performance expansion.

Description

A kind of many output videos extends perpendicular segmenting device

Technical field

The utility model relates to a kind of device that can realize the ultrahigh resolution vision signal extends perpendicular that will import and be divided into a plurality of demonstrations outputs.

Background technology

At media advertisement, occasions such as exhibition propaganda, usually need to use the splicing of a plurality of display devices picture that forms a whole to constitute bigger screen, wherein there is the certain applications occasion need use a plurality of display devices vertically to splice at the big picture that vertically forms a whole, when realizing this application, generally can adopt special tiled display at present, the shortcoming that adopts special tiled display is because particular design, cost an arm and a leg, and total resolution not high (generally being no more than 1920x1200 resolution), the physical resolution of total effective resolution of spliced reality and single screen is identical, can not reach the summation of the total physical resolution of a plurality of screens.If do not adopt special Mosaic screen, can realize with multi-screen video card or existing assembly screen device, the former connects a plurality of displays at a plurality of outputs of multi-screen video card, extends perpendicular pattern by the multi-screen video card realizes that it is that support that 3D is used is bad that vertical multi-screen is vertically formed problem that the method for the big picture of multi-screen mainly exists again, and there is restriction in the use of multi-screen video card simultaneously in some occasion; The existing assembly screen of latter device much also is to adopt the multi-screen video card to realize output, therefore exist and the same problem of multi-screen video card, for its image mosaic of splicer that is not based on multi-screen video card output is the splicing of a plurality of inputs or to the amplification of picture in vertical expansion, can't realize that single high resolving power input expands vertical vertical a plurality of screens and constitutes the effect of big picture price is also very expensive simultaneously.

The output of computing machine individual interface at present can support to surpass the above ultrahigh resolution output of full HD twice, the expanding unit of a plurality of displays has appearred a single high resolving power input picture to be expanded on the market, owing to be expansion to the output of computing machine individual interface, therefore not only connect simple application and conveniently but also to computing machine output pattern performance do not have any influence, especially 3D is used good support is arranged, but such device does not support the high-definition picture that will import to expand to the ability on vertical a plurality of display devices, the only expansion of support level expansion or realization 2x2, occasion in the vertical multi-screen expansion of needs can only be exported rotary simulation by computing machine, it is also a lot of that such mode not only limits very big but also performance descends, and can not realize the real high performance expansion of vertical high resolving power multi-screen.

In sum, in order to realize the vertical display effect of high performance multi-screen, be necessary to design the device solves the problems referred to above that can realize the ultrahigh resolution vision signal extends perpendicular that to import and be divided into a plurality of demonstrations outputs.

The utility model content

The technical problems to be solved in the utility model is to provide a kind of many output videos extends perpendicular segmenting device, is used for realizing the high performance expansion of vertical high resolving power multi-screen in the occasion of the vertical multi-screen expansion of needs.

In order to address the above problem, the utility model adopts following technical scheme: a kind of many output videos extends perpendicular segmenting device, it links to each other with display device with computing machine, this device comprises a video input interface that possesses the ultrahigh resolution input capability, is used for the ultrahigh resolution output signal of receiving computer video card; The EDID circuit able to programme that is connected with video input interface is used for the EDID information of video input interface is carried out dynamic programming according to the quantity of video output interface and the video signal format of required output; The input video frame buffer circuit that is connected with the output terminal of video input interface is used for the high-resolution video input signal arrangement back extraction effective video frame wherein with video input interface, stores in the SDRAM storer; The output video frame synchronization that is connected with the output terminal of input video frame buffer circuit produces circuit and produces some video output interfaces that circuit output end is connected with output video frame synchronization; The effective video frame that described output video frame synchronization generation circuit is used for being stored in the SDRAM storer reads a plurality of row caches successively, each row cache is corresponding to a plurality of partitioning portions on the vertical direction, again produce new video output formats information again, send to a plurality of video output interfaces.

The utility model can realize that the input of single high resolving power expands vertical vertical a plurality of screens and constitutes the effect of big picture price is also very cheap simultaneously.Realize the real high performance expansion of vertical high resolving power multi-screen.

Description of drawings:

Fig. 1 is a block scheme of the present utility model.

Embodiment

A kind of many output videos extends perpendicular segmenting device, it links to each other with display device with computing machine, and this device comprises a video input interface that possesses the ultrahigh resolution input capability, is used for the ultrahigh resolution output signal of receiving computer video card; The EDID circuit able to programme that is connected with video input interface is used for the EDID information of video input interface is carried out dynamic programming according to the quantity of video output interface and the video signal format of required output; The input video frame buffer circuit that is connected with the output terminal of video input interface is used for the high-resolution video input signal arrangement back extraction effective video frame wherein with video input interface, stores in the SDRAM storer; The output video frame synchronization that is connected with the output terminal of input video frame buffer circuit produces circuit and produces some video output interfaces that circuit output end is connected with output video frame synchronization; The effective video frame that described output video frame synchronization generation circuit is used for being stored in the SDRAM storer reads a plurality of row caches successively, each row cache is corresponding to a plurality of partitioning portions on the vertical direction, again produce new video output formats information again, send to a plurality of video output interfaces.

The technical program also comprises a kind of method of carrying out many output videos extends perpendicular, and this method may further comprise the steps:

1) possesses the ultrahigh resolution output signal of the input interface receiving computer video card of ultrahigh resolution input capability;

2) described input video frame buffer circuit, the high-resolution video input signal arrangement back extraction effective video frame wherein with video input interface stores in the SDRAM storer;

3) the able to programme EDID information module of described EDID circuit able to programme by wherein carries out dynamic programming to the EDID information of video input interface according to the quantity of video output interface and the video signal format of required output;

4) described output video frame synchronization generation circuit reads the effective video frame of buffer-stored in the SDRAM storer on a plurality of row caches successively, each row cache is corresponding to a plurality of partitioning portions on the vertical direction, again produce new video output formats information again, send to a plurality of video output interfaces;

5) output of described video output interface is finally cut apart a plurality of vision signals of finishing to many display devices.

EDID is meant that Extended Display Identification Data (extending display identification data) is a kind of VESA standard data format, the parameter that wherein can comprise relevant monitor and performance thereof comprises that supplier information, maximum image size, color setting, manufacturer pre-set, the character string of the restriction of frequency range and display name and sequence number.These information are kept in the display joint, are used for communicating by a DDC (Display DataChannel) and system, and this carries out between display and PC graphics adapter.The EDID of latest edition can use in CRT, LCD and type of display in the future, and this is because EDID provides the universal description of nearly all display parameter.

EDID information module able to programme is realized (can also realizing by the design specialized integrated circuit by FPGA, EDID information module able to programme also can be realized with MCU, it also is to realize or realize with ASIC with FPGA that module is cut apart in non-homogeneous black plug module and output simultaneously), FPGA is the abbreviation of English Field Programmable Gate Array, be field programmable gate array, it is the product that further develops on the basis of programming devices such as PAL, GAL, EPLD.It occurs as a kind of semi-custom circuit in special IC (ASIC) field, has both solved the deficiency of custom circuit, has overcome the limited shortcoming of original programming device gate circuit number again.FPGA has adopted the such new ideas of logical cell array LCA (Logic Cell Array), and inside comprises configurable logic blocks CLB (Configurable Logic Block), output load module IOB (Input OutputBlock) and three parts of interconnector (Interconnect).Can support a slice PROM programming multiple FPGA; Serial mode can adopt serial PROM programming FPGA; The peripheral hardware pattern can be programmed by microprocessor the peripheral hardware of FPGA as microprocessor to it.

Referring now to accompanying drawing 1 embodiment of the present utility model is described.

A kind of ultrahigh resolution is imported many output videos extends perpendicular segmenting device and is comprised: one or more input interfaces that possess the ultrahigh resolution input capability, the input video frame buffer circuit, EDID circuit able to programme, a plurality of output videos produce circuit synchronously, the video output interface more than three.

EDID circuit able to programme is programmed to the EDID information of input interface by exterior arrangement or by the display message that reads the display device that output interface connects, resolution as the output image of each interface of needs is the capable and M2 row of M1, needing the split screen quantity of the vertical direction of output is N, and then will to report image resolution ratio that input interface supports to computer system be that the capable and M2 of M1xN is listed as to the EDID information of Chan Shenging;

The ultrahigh resolution output signal that the EDID information that computer display card can produce according to EDID circuit able to programme sends to the input interface of the ultrahigh resolution input capability of device, this input signal resolution is the summation of a plurality of signal resolution of output, i.e. the picture signal that M1xN is capable and M2 is listed as;

The input video frame buffer circuit takes out the valid pixel part to this high definition video signal of input, and the continuous frame input video of will putting in order deposits in the SDRAM storer that is connected with the input video frame buffer circuit;

Described a plurality of output video frame synchronization produces circuit, the input video frame of buffer-stored in the SDRAM storer read on N the row cache successively, each row cache is corresponding to the partitioning portion of the N on the vertical direction, again produce new video output formats information again, send to a plurality of video output interfaces.

A plurality of video output interfaces, output are finally cut apart a plurality of vision signals of finishing and are arrived many display devices, and a plurality of output videos are formed the ultrahigh resolution image that a resolution is the capable M2 row of M1xN in vertical direction jointly.

The foregoing description just lists expressivity principle of the present utility model and effect is described, but not is used to limit the utility model.Any personnel that are familiar with this technology all can make amendment to the foregoing description under spirit of the present utility model and scope.Therefore, rights protection scope of the present utility model should be listed as claims.

Claims

1. the segmenting device of output video extends perpendicular more than a kind, it links to each other with some display devices with computing machine, it is characterized in that: this device comprises a video input interface that possesses the ultrahigh resolution input capability, is used for the ultrahigh resolution output signal of receiving computer video card; The EDID circuit able to programme that is connected with video input interface is used for the EDID information of video input interface is carried out dynamic programming according to the quantity of video output interface and the video signal format of required output; The input video frame buffer circuit that is connected with the output terminal of video input interface, be used for high-resolution video input signal arrangement back extraction effective video frame wherein, store in the SDRAM storer that links to each other with the input video frame buffer circuit video input interface; The output video frame synchronization that is connected with the output terminal of input video frame buffer circuit produces circuit and produces some video output interfaces that circuit output end is connected with output video frame synchronization; The effective video frame that described output video frame synchronization generation circuit is used for being stored in the SDRAM storer reads a plurality of row caches successively, each row cache is corresponding to a plurality of partitioning portions on the vertical direction, again produce new video output formats information again, send to a plurality of video output interfaces.

2. a kind of many output videos of input extends perpendicular segmenting device as claimed in claim 1, it is characterized in that: described video output interface is three.